mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-24 09:10:36 +00:00
f2c08099fd
The framerate can be a range or a fraction, one now needs to handle both cases. If it's not a range, then the framerate needs to be exactly the same. Also avoid leaking the GstStructure Fixes a regression introduced by https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7850 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8000>
6009 lines
188 KiB
C
6009 lines
188 KiB
C
/* GStreamer
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*
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* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
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* 2006 Edgard Lima <edgard.lima@gmail.com>
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*
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* gstv4l2object.c: base class for V4L2 elements
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version. This library is distributed in the hope
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* that it will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Library General Public License for more details.
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/ioctl.h>
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#ifdef HAVE_GUDEV
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#include <gudev/gudev.h>
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#endif
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#include "ext/videodev2.h"
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#include "gstv4l2object.h"
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#include "gstv4l2tuner.h"
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#include "gstv4l2colorbalance.h"
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#include <glib/gi18n-lib.h>
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#include <gst/video/video.h>
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#include <gst/allocators/gstdmabuf.h>
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GST_DEBUG_CATEGORY_EXTERN (v4l2_debug);
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#define GST_CAT_DEFAULT v4l2_debug
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#define DEFAULT_PROP_DEVICE_NAME NULL
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#define DEFAULT_PROP_DEVICE_FD -1
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#define DEFAULT_PROP_FLAGS 0
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#define DEFAULT_PROP_TV_NORM 0
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#define DEFAULT_PROP_IO_MODE GST_V4L2_IO_AUTO
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#define ENCODED_BUFFER_MIN_SIZE (256 * 1024)
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#define GST_V4L2_DEFAULT_WIDTH 320
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#define GST_V4L2_DEFAULT_HEIGHT 240
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enum
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{
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PROP_0,
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V4L2_STD_OBJECT_PROPS,
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};
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/*
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* common format / caps utilities:
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*/
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typedef enum
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{
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GST_V4L2_RESOLUTION_AND_RATE = 1u << 4,
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GST_V4L2_RAW = (1u << 0) | GST_V4L2_RESOLUTION_AND_RATE,
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GST_V4L2_CODEC = 1u << 1,
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GST_V4L2_TRANSPORT = 1u << 2,
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GST_V4L2_NO_PARSE = 1u << 3,
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GST_V4L2_BAYER = GST_V4L2_RAW | (1u << 5),
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GST_V4L2_ALL = 0xffff
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} GstV4L2FormatFlags;
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typedef struct
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{
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guint32 v4l2_format;
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GstVideoFormat gst_format;
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GstV4L2FormatFlags flags;
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} GstV4L2FormatDesc;
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/* *INDENT-OFF* */
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#define MAP_FMT(v4l2_format, gst_fmt) V4L2_PIX_FMT_##v4l2_format, GST_VIDEO_FORMAT_##gst_fmt
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static const GstV4L2FormatDesc gst_v4l2_formats[] = {
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/* RGB formats */
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{MAP_FMT (RGB332, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (ARGB555, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (XRGB555, RGB15), GST_V4L2_RAW},
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{MAP_FMT (XRGB555X, RGB15), GST_V4L2_RAW},
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{MAP_FMT (ARGB555X, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (RGB565, RGB16), GST_V4L2_RAW},
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{MAP_FMT (RGB565X, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (BGR666, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (BGR24, BGR), GST_V4L2_RAW},
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{MAP_FMT (RGB24, RGB), GST_V4L2_RAW},
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{MAP_FMT (ABGR32, BGRA), GST_V4L2_RAW},
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{MAP_FMT (XBGR32, BGRx), GST_V4L2_RAW},
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{MAP_FMT (BGRA32, ABGR), GST_V4L2_RAW},
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{MAP_FMT (BGRX32, xBGR), GST_V4L2_RAW},
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{MAP_FMT (RGBA32, RGBA), GST_V4L2_RAW},
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{MAP_FMT (RGBX32, RGBx), GST_V4L2_RAW},
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{MAP_FMT (ARGB32, ARGB), GST_V4L2_RAW},
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{MAP_FMT (XRGB32, xRGB), GST_V4L2_RAW},
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/* Deprecated Packed RGB Image Formats (alpha ambiguity) */
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{MAP_FMT (RGB444, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (RGB555, RGB15), GST_V4L2_RAW},
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{MAP_FMT (RGB555X, BGR15), GST_V4L2_RAW},
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{MAP_FMT (BGR32, BGRx), GST_V4L2_RAW},
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{MAP_FMT (BGR32, BGRA), GST_V4L2_RAW},
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{MAP_FMT (RGB32, xRGB), GST_V4L2_RAW},
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{MAP_FMT (RGB32, ARGB), GST_V4L2_RAW},
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/* Grey formats */
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{MAP_FMT (GREY, GRAY8), GST_V4L2_RAW},
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{MAP_FMT (Y4, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (Y6, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (Y10, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (Y12, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (Y16, GRAY16_LE), GST_V4L2_RAW},
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{MAP_FMT (Y16_BE, GRAY16_BE), GST_V4L2_RAW},
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{MAP_FMT (Y10BPACK, UNKNOWN), GST_V4L2_RAW},
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/* Palette formats */
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{MAP_FMT (PAL8, UNKNOWN), GST_V4L2_RAW},
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/* Chrominance formats */
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{MAP_FMT (UV8, UNKNOWN), GST_V4L2_RAW},
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/* Luminance+Chrominance formats */
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{MAP_FMT (YVU410, YVU9), GST_V4L2_RAW},
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{MAP_FMT (YVU420M, YV12), GST_V4L2_RAW},
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{MAP_FMT (YVU420, YV12), GST_V4L2_RAW},
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{MAP_FMT (YUYV, YUY2), GST_V4L2_RAW},
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{MAP_FMT (YYUV, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (YVYU, YVYU), GST_V4L2_RAW},
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{MAP_FMT (UYVY, UYVY), GST_V4L2_RAW},
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{MAP_FMT (VYUY, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (YUV422M, Y42B), GST_V4L2_RAW},
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{MAP_FMT (YUV422P, Y42B), GST_V4L2_RAW},
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{MAP_FMT (YUV411P, Y41B), GST_V4L2_RAW},
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{MAP_FMT (Y41P, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (YUV444, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (YUV555, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (YUV565, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (YUV32, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (YUV410, YUV9), GST_V4L2_RAW},
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{MAP_FMT (YUV420M, I420), GST_V4L2_RAW},
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{MAP_FMT (YUV420, I420), GST_V4L2_RAW},
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{MAP_FMT (HI240, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (M420, UNKNOWN), GST_V4L2_RAW},
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/* two planes -- one Y, one Cr + Cb interleaved */
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{MAP_FMT (NV12M, NV12), GST_V4L2_RAW},
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{MAP_FMT (NV12, NV12), GST_V4L2_RAW},
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{MAP_FMT (NV12MT, NV12_64Z32), GST_V4L2_RAW},
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{MAP_FMT (NV12MT_16X16, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (NV12_16L16, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (NV12M_8L128, NV12_8L128), GST_V4L2_RAW},
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{MAP_FMT (NV12M_10BE_8L128, NV12_10BE_8L128), GST_V4L2_RAW},
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{MAP_FMT (NV21M, NV21), GST_V4L2_RAW},
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{MAP_FMT (NV21, NV21), GST_V4L2_RAW},
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{MAP_FMT (NV16M, NV16), GST_V4L2_RAW},
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{MAP_FMT (NV16, NV16), GST_V4L2_RAW},
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{MAP_FMT (NV61M, NV61), GST_V4L2_RAW},
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{MAP_FMT (NV61, NV61), GST_V4L2_RAW},
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{MAP_FMT (NV24, NV24), GST_V4L2_RAW},
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{MAP_FMT (NV42, UNKNOWN), GST_V4L2_RAW},
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{MAP_FMT (MM21, NV12_16L32S), GST_V4L2_RAW},
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/* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
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{MAP_FMT (SBGGR8, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SGBRG8, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SGRBG8, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SRGGB8, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SBGGR10, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SGBRG10, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SGRBG10, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SRGGB10, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SBGGR12, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SGBRG12, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SGRBG12, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SRGGB12, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SBGGR14, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SGBRG14, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SGRBG14, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SRGGB14, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SBGGR16, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SGBRG16, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SGRBG16, ENCODED), GST_V4L2_BAYER},
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{MAP_FMT (SRGGB16, ENCODED), GST_V4L2_BAYER},
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/* compressed formats */
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{MAP_FMT (MJPEG, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (JPEG, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (PJPG, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (DV, ENCODED), GST_V4L2_TRANSPORT},
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{MAP_FMT (MPEG, ENCODED), GST_V4L2_TRANSPORT},
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{MAP_FMT (FWHT, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (H264, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (H264_NO_SC, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (H264_MVC, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (HEVC, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (H263, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (MPEG1, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (MPEG2, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (MPEG4, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (XVID, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (VC1_ANNEX_G, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (VC1_ANNEX_L, ENCODED), GST_V4L2_CODEC},
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{MAP_FMT (VP8, ENCODED), GST_V4L2_CODEC | GST_V4L2_NO_PARSE},
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{MAP_FMT (VP9, ENCODED), GST_V4L2_CODEC | GST_V4L2_NO_PARSE},
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/* Vendor-specific formats */
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{MAP_FMT (WNVA, ENCODED), GST_V4L2_CODEC | GST_V4L2_RESOLUTION_AND_RATE},
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{MAP_FMT (SN9C10X, ENCODED), GST_V4L2_CODEC | GST_V4L2_RESOLUTION_AND_RATE},
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{MAP_FMT (PWC1, ENCODED), GST_V4L2_CODEC | GST_V4L2_RESOLUTION_AND_RATE},
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{MAP_FMT (PWC2, ENCODED), GST_V4L2_CODEC | GST_V4L2_RESOLUTION_AND_RATE},
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};
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#undef MAP_FMT
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/* *INDENT-ON* */
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#define GST_V4L2_FORMAT_COUNT (G_N_ELEMENTS (gst_v4l2_formats))
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static GSList *gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object);
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#define GST_TYPE_V4L2_DEVICE_FLAGS (gst_v4l2_device_get_type ())
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static GType
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gst_v4l2_device_get_type (void)
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{
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static GType v4l2_device_type = 0;
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if (v4l2_device_type == 0) {
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static const GFlagsValue values[] = {
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{V4L2_CAP_VIDEO_CAPTURE, "Device supports video capture", "capture"},
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{V4L2_CAP_VIDEO_OUTPUT, "Device supports video playback", "output"},
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{V4L2_CAP_VIDEO_OVERLAY, "Device supports video overlay", "overlay"},
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{V4L2_CAP_VBI_CAPTURE, "Device supports the VBI capture", "vbi-capture"},
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{V4L2_CAP_VBI_OUTPUT, "Device supports the VBI output", "vbi-output"},
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{V4L2_CAP_TUNER, "Device has a tuner or modulator", "tuner"},
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{V4L2_CAP_AUDIO, "Device has audio inputs or outputs", "audio"},
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{0, NULL, NULL}
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};
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v4l2_device_type =
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g_flags_register_static ("GstV4l2DeviceTypeFlags", values);
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}
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return v4l2_device_type;
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}
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#define GST_TYPE_V4L2_TV_NORM (gst_v4l2_tv_norm_get_type ())
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static GType
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gst_v4l2_tv_norm_get_type (void)
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{
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static GType v4l2_tv_norm = 0;
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if (!v4l2_tv_norm) {
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static const GEnumValue tv_norms[] = {
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{0, "none", "none"},
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{V4L2_STD_NTSC, "NTSC", "NTSC"},
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{V4L2_STD_NTSC_M, "NTSC-M", "NTSC-M"},
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{V4L2_STD_NTSC_M_JP, "NTSC-M-JP", "NTSC-M-JP"},
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{V4L2_STD_NTSC_M_KR, "NTSC-M-KR", "NTSC-M-KR"},
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{V4L2_STD_NTSC_443, "NTSC-443", "NTSC-443"},
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{V4L2_STD_PAL, "PAL", "PAL"},
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{V4L2_STD_PAL_BG, "PAL-BG", "PAL-BG"},
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{V4L2_STD_PAL_B, "PAL-B", "PAL-B"},
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{V4L2_STD_PAL_B1, "PAL-B1", "PAL-B1"},
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{V4L2_STD_PAL_G, "PAL-G", "PAL-G"},
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{V4L2_STD_PAL_H, "PAL-H", "PAL-H"},
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{V4L2_STD_PAL_I, "PAL-I", "PAL-I"},
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{V4L2_STD_PAL_DK, "PAL-DK", "PAL-DK"},
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{V4L2_STD_PAL_D, "PAL-D", "PAL-D"},
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{V4L2_STD_PAL_D1, "PAL-D1", "PAL-D1"},
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{V4L2_STD_PAL_K, "PAL-K", "PAL-K"},
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{V4L2_STD_PAL_M, "PAL-M", "PAL-M"},
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{V4L2_STD_PAL_N, "PAL-N", "PAL-N"},
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{V4L2_STD_PAL_Nc, "PAL-Nc", "PAL-Nc"},
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{V4L2_STD_PAL_60, "PAL-60", "PAL-60"},
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{V4L2_STD_SECAM, "SECAM", "SECAM"},
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{V4L2_STD_SECAM_B, "SECAM-B", "SECAM-B"},
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{V4L2_STD_SECAM_G, "SECAM-G", "SECAM-G"},
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{V4L2_STD_SECAM_H, "SECAM-H", "SECAM-H"},
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{V4L2_STD_SECAM_DK, "SECAM-DK", "SECAM-DK"},
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{V4L2_STD_SECAM_D, "SECAM-D", "SECAM-D"},
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{V4L2_STD_SECAM_K, "SECAM-K", "SECAM-K"},
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{V4L2_STD_SECAM_K1, "SECAM-K1", "SECAM-K1"},
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{V4L2_STD_SECAM_L, "SECAM-L", "SECAM-L"},
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{V4L2_STD_SECAM_LC, "SECAM-Lc", "SECAM-Lc"},
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{0, NULL, NULL}
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};
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v4l2_tv_norm = g_enum_register_static ("V4L2_TV_norms", tv_norms);
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}
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return v4l2_tv_norm;
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}
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GType
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gst_v4l2_io_mode_get_type (void)
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{
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static GType v4l2_io_mode = 0;
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if (!v4l2_io_mode) {
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static const GEnumValue io_modes[] = {
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{GST_V4L2_IO_AUTO, "GST_V4L2_IO_AUTO", "auto"},
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{GST_V4L2_IO_RW, "GST_V4L2_IO_RW", "rw"},
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{GST_V4L2_IO_MMAP, "GST_V4L2_IO_MMAP", "mmap"},
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{GST_V4L2_IO_USERPTR, "GST_V4L2_IO_USERPTR", "userptr"},
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{GST_V4L2_IO_DMABUF, "GST_V4L2_IO_DMABUF", "dmabuf"},
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{GST_V4L2_IO_DMABUF_IMPORT, "GST_V4L2_IO_DMABUF_IMPORT",
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"dmabuf-import"},
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{0, NULL, NULL}
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};
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v4l2_io_mode = g_enum_register_static ("GstV4l2IOMode", io_modes);
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}
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return v4l2_io_mode;
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}
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void
|
|
gst_v4l2_object_install_properties_helper (GObjectClass * gobject_class,
|
|
const char *default_device)
|
|
{
|
|
g_object_class_install_property (gobject_class, PROP_DEVICE,
|
|
g_param_spec_string ("device", "Device", "Device location",
|
|
default_device, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
|
|
g_param_spec_string ("device-name", "Device name",
|
|
"Name of the device", DEFAULT_PROP_DEVICE_NAME,
|
|
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
|
|
g_param_spec_int ("device-fd", "File descriptor",
|
|
"File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
|
|
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_FLAGS,
|
|
g_param_spec_flags ("flags", "Flags", "Device type flags",
|
|
GST_TYPE_V4L2_DEVICE_FLAGS, DEFAULT_PROP_FLAGS,
|
|
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstV4l2Src:brightness:
|
|
*
|
|
* Picture brightness, or more precisely, the black level
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_BRIGHTNESS,
|
|
g_param_spec_int ("brightness", "Brightness",
|
|
"Picture brightness, or more precisely, the black level", G_MININT,
|
|
G_MAXINT, 0,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
|
|
/**
|
|
* GstV4l2Src:contrast:
|
|
*
|
|
* Picture contrast or luma gain
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_CONTRAST,
|
|
g_param_spec_int ("contrast", "Contrast",
|
|
"Picture contrast or luma gain", G_MININT,
|
|
G_MAXINT, 0,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
|
|
/**
|
|
* GstV4l2Src:saturation:
|
|
*
|
|
* Picture color saturation or chroma gain
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_SATURATION,
|
|
g_param_spec_int ("saturation", "Saturation",
|
|
"Picture color saturation or chroma gain", G_MININT,
|
|
G_MAXINT, 0,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
|
|
/**
|
|
* GstV4l2Src:hue:
|
|
*
|
|
* Hue or color balance
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_HUE,
|
|
g_param_spec_int ("hue", "Hue",
|
|
"Hue or color balance", G_MININT,
|
|
G_MAXINT, 0,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
|
|
|
|
/**
|
|
* GstV4l2Src:norm:
|
|
*
|
|
* TV norm
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_TV_NORM,
|
|
g_param_spec_enum ("norm", "TV norm",
|
|
"video standard",
|
|
GST_TYPE_V4L2_TV_NORM, DEFAULT_PROP_TV_NORM,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstV4l2Src:io-mode:
|
|
*
|
|
* IO Mode
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_IO_MODE,
|
|
g_param_spec_enum ("io-mode", "IO mode",
|
|
"I/O mode",
|
|
GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstV4l2Src:extra-controls:
|
|
*
|
|
* Additional v4l2 controls for the device. The controls are identified
|
|
* by the control name (lowercase with '_' for any non-alphanumeric
|
|
* characters).
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_EXTRA_CONTROLS,
|
|
g_param_spec_boxed ("extra-controls", "Extra Controls",
|
|
"Extra v4l2 controls (CIDs) for the device",
|
|
GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstV4l2Src:pixel-aspect-ratio:
|
|
*
|
|
* The pixel aspect ratio of the device. This overwrites the pixel aspect
|
|
* ratio queried from the device.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO,
|
|
g_param_spec_string ("pixel-aspect-ratio", "Pixel Aspect Ratio",
|
|
"Overwrite the pixel aspect ratio of the device", "1/1",
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstV4l2Src:force-aspect-ratio:
|
|
*
|
|
* When enabled, the pixel aspect ratio queried from the device or set
|
|
* with the pixel-aspect-ratio property will be enforced.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
|
|
g_param_spec_boolean ("force-aspect-ratio", "Force aspect ratio",
|
|
"When enabled, the pixel aspect ratio will be enforced", TRUE,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
gst_type_mark_as_plugin_api (GST_TYPE_V4L2_DEVICE_FLAGS, 0);
|
|
gst_type_mark_as_plugin_api (GST_TYPE_V4L2_TV_NORM, 0);
|
|
gst_type_mark_as_plugin_api (GST_TYPE_V4L2_IO_MODE, 0);
|
|
}
|
|
|
|
void
|
|
gst_v4l2_object_install_m2m_properties_helper (GObjectClass * gobject_class)
|
|
{
|
|
g_object_class_install_property (gobject_class, PROP_DEVICE,
|
|
g_param_spec_string ("device", "Device", "Device location",
|
|
NULL, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
|
|
g_param_spec_string ("device-name", "Device name",
|
|
"Name of the device", DEFAULT_PROP_DEVICE_NAME,
|
|
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
|
|
g_param_spec_int ("device-fd", "File descriptor",
|
|
"File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
|
|
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_OUTPUT_IO_MODE,
|
|
g_param_spec_enum ("output-io-mode", "Output IO mode",
|
|
"Output side I/O mode (matches sink pad)",
|
|
GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_CAPTURE_IO_MODE,
|
|
g_param_spec_enum ("capture-io-mode", "Capture IO mode",
|
|
"Capture I/O mode (matches src pad)",
|
|
GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_EXTRA_CONTROLS,
|
|
g_param_spec_boxed ("extra-controls", "Extra Controls",
|
|
"Extra v4l2 controls (CIDs) for the device",
|
|
GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
}
|
|
|
|
/* Support for 32bit off_t, this wrapper is casting off_t to gint64 */
|
|
#ifdef HAVE_LIBV4L2
|
|
#if SIZEOF_OFF_T < 8
|
|
|
|
static gpointer
|
|
v4l2_mmap_wrapper (gpointer start, gsize length, gint prot, gint flags, gint fd,
|
|
off_t offset)
|
|
{
|
|
return v4l2_mmap (start, length, prot, flags, fd, (gint64) offset);
|
|
}
|
|
|
|
#define v4l2_mmap v4l2_mmap_wrapper
|
|
|
|
#endif /* SIZEOF_OFF_T < 8 */
|
|
#endif /* HAVE_LIBV4L2 */
|
|
|
|
GstV4l2Object *
|
|
gst_v4l2_object_new (GstElement * element,
|
|
GstObject * debug_object,
|
|
enum v4l2_buf_type type,
|
|
const char *default_device,
|
|
GstV4l2GetInOutFunction get_in_out_func,
|
|
GstV4l2SetInOutFunction set_in_out_func,
|
|
GstV4l2UpdateFpsFunction update_fps_func)
|
|
{
|
|
GstV4l2Object *v4l2object;
|
|
|
|
/*
|
|
* some default values
|
|
*/
|
|
v4l2object = g_new0 (GstV4l2Object, 1);
|
|
|
|
v4l2object->type = type;
|
|
v4l2object->formats = NULL;
|
|
|
|
v4l2object->element = element;
|
|
v4l2object->dbg_obj = debug_object;
|
|
v4l2object->get_in_out_func = get_in_out_func;
|
|
v4l2object->set_in_out_func = set_in_out_func;
|
|
v4l2object->update_fps_func = update_fps_func;
|
|
|
|
v4l2object->video_fd = -1;
|
|
v4l2object->active = FALSE;
|
|
v4l2object->videodev = g_strdup (default_device);
|
|
|
|
v4l2object->norms = NULL;
|
|
v4l2object->channels = NULL;
|
|
v4l2object->colors = NULL;
|
|
|
|
v4l2object->keep_aspect = TRUE;
|
|
|
|
v4l2object->n_v4l2_planes = 0;
|
|
|
|
v4l2object->no_initial_format = FALSE;
|
|
|
|
v4l2object->poll = gst_poll_new (TRUE);
|
|
v4l2object->can_poll_device = TRUE;
|
|
|
|
/* We now disable libv4l2 by default, but have an env to enable it. */
|
|
#ifdef HAVE_LIBV4L2
|
|
if (g_getenv ("GST_V4L2_USE_LIBV4L2")) {
|
|
v4l2object->fd_open = v4l2_fd_open;
|
|
v4l2object->close = v4l2_close;
|
|
v4l2object->dup = v4l2_dup;
|
|
v4l2object->ioctl = v4l2_ioctl;
|
|
v4l2object->read = v4l2_read;
|
|
v4l2object->mmap = v4l2_mmap;
|
|
v4l2object->munmap = v4l2_munmap;
|
|
} else
|
|
#endif
|
|
{
|
|
v4l2object->fd_open = NULL;
|
|
v4l2object->close = close;
|
|
v4l2object->dup = dup;
|
|
v4l2object->ioctl = ioctl;
|
|
v4l2object->read = read;
|
|
v4l2object->mmap = mmap;
|
|
v4l2object->munmap = munmap;
|
|
}
|
|
|
|
return v4l2object;
|
|
}
|
|
|
|
|
|
static gboolean
|
|
gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object)
|
|
{
|
|
g_slist_foreach (v4l2object->formats, (GFunc) g_free, NULL);
|
|
g_slist_free (v4l2object->formats);
|
|
v4l2object->formats = NULL;
|
|
v4l2object->fmtdesc = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
void
|
|
gst_v4l2_object_destroy (GstV4l2Object * v4l2object)
|
|
{
|
|
g_return_if_fail (v4l2object != NULL);
|
|
|
|
g_free (v4l2object->videodev);
|
|
g_free (v4l2object->par);
|
|
g_free (v4l2object->channel);
|
|
|
|
gst_poll_free (v4l2object->poll);
|
|
|
|
if (v4l2object->formats) {
|
|
gst_v4l2_object_clear_format_list (v4l2object);
|
|
}
|
|
|
|
if (v4l2object->probed_caps) {
|
|
gst_caps_unref (v4l2object->probed_caps);
|
|
}
|
|
|
|
if (v4l2object->extra_controls) {
|
|
gst_structure_free (v4l2object->extra_controls);
|
|
}
|
|
|
|
g_free (v4l2object);
|
|
}
|
|
|
|
|
|
static gint
|
|
gst_v4l2_object_prop_to_cid (guint prop_id)
|
|
{
|
|
gint cid = -1;
|
|
|
|
switch (prop_id) {
|
|
case PROP_BRIGHTNESS:
|
|
cid = V4L2_CID_BRIGHTNESS;
|
|
break;
|
|
case PROP_CONTRAST:
|
|
cid = V4L2_CID_CONTRAST;
|
|
break;
|
|
case PROP_SATURATION:
|
|
cid = V4L2_CID_SATURATION;
|
|
break;
|
|
case PROP_HUE:
|
|
cid = V4L2_CID_HUE;
|
|
break;
|
|
default:
|
|
GST_WARNING ("unmapped property id: %d", prop_id);
|
|
}
|
|
return cid;
|
|
}
|
|
|
|
|
|
gboolean
|
|
gst_v4l2_object_set_property_helper (GstV4l2Object * v4l2object,
|
|
guint prop_id, const GValue * value, GParamSpec * pspec)
|
|
{
|
|
switch (prop_id) {
|
|
case PROP_DEVICE:
|
|
g_free (v4l2object->videodev);
|
|
v4l2object->videodev = g_value_dup_string (value);
|
|
break;
|
|
case PROP_BRIGHTNESS:
|
|
case PROP_CONTRAST:
|
|
case PROP_SATURATION:
|
|
case PROP_HUE:
|
|
{
|
|
gint cid = gst_v4l2_object_prop_to_cid (prop_id);
|
|
|
|
if (cid != -1) {
|
|
if (GST_V4L2_IS_OPEN (v4l2object)) {
|
|
gst_v4l2_set_attribute (v4l2object, cid, g_value_get_int (value));
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
break;
|
|
case PROP_TV_NORM:
|
|
v4l2object->tv_norm = g_value_get_enum (value);
|
|
break;
|
|
#if 0
|
|
case PROP_CHANNEL:
|
|
if (GST_V4L2_IS_OPEN (v4l2object)) {
|
|
GstTuner *tuner = GST_TUNER (v4l2object->element);
|
|
GstTunerChannel *channel = gst_tuner_find_channel_by_name (tuner,
|
|
(gchar *) g_value_get_string (value));
|
|
|
|
if (channel) {
|
|
/* like gst_tuner_set_channel (tuner, channel)
|
|
without g_object_notify */
|
|
gst_v4l2_tuner_set_channel (v4l2object, channel);
|
|
}
|
|
} else {
|
|
g_free (v4l2object->channel);
|
|
v4l2object->channel = g_value_dup_string (value);
|
|
}
|
|
break;
|
|
case PROP_FREQUENCY:
|
|
if (GST_V4L2_IS_OPEN (v4l2object)) {
|
|
GstTuner *tuner = GST_TUNER (v4l2object->element);
|
|
GstTunerChannel *channel = gst_tuner_get_channel (tuner);
|
|
|
|
if (channel &&
|
|
GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
|
|
/* like
|
|
gst_tuner_set_frequency (tuner, channel, g_value_get_ulong (value))
|
|
without g_object_notify */
|
|
gst_v4l2_tuner_set_frequency (v4l2object, channel,
|
|
g_value_get_ulong (value));
|
|
}
|
|
} else {
|
|
v4l2object->frequency = g_value_get_ulong (value);
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
case PROP_IO_MODE:
|
|
v4l2object->req_mode = g_value_get_enum (value);
|
|
break;
|
|
case PROP_CAPTURE_IO_MODE:
|
|
g_return_val_if_fail (!V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
|
|
v4l2object->req_mode = g_value_get_enum (value);
|
|
break;
|
|
case PROP_OUTPUT_IO_MODE:
|
|
g_return_val_if_fail (V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
|
|
v4l2object->req_mode = g_value_get_enum (value);
|
|
break;
|
|
case PROP_EXTRA_CONTROLS:{
|
|
const GstStructure *s = gst_value_get_structure (value);
|
|
|
|
if (v4l2object->extra_controls)
|
|
gst_structure_free (v4l2object->extra_controls);
|
|
|
|
v4l2object->extra_controls = s ? gst_structure_copy (s) : NULL;
|
|
if (GST_V4L2_IS_OPEN (v4l2object))
|
|
gst_v4l2_set_controls (v4l2object, v4l2object->extra_controls);
|
|
break;
|
|
}
|
|
case PROP_PIXEL_ASPECT_RATIO:
|
|
if (v4l2object->par) {
|
|
g_value_unset (v4l2object->par);
|
|
g_free (v4l2object->par);
|
|
}
|
|
v4l2object->par = g_new0 (GValue, 1);
|
|
g_value_init (v4l2object->par, GST_TYPE_FRACTION);
|
|
if (!g_value_transform (value, v4l2object->par)) {
|
|
g_warning ("Could not transform string to aspect ratio");
|
|
gst_value_set_fraction (v4l2object->par, 1, 1);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "set PAR to %d/%d",
|
|
gst_value_get_fraction_numerator (v4l2object->par),
|
|
gst_value_get_fraction_denominator (v4l2object->par));
|
|
break;
|
|
case PROP_FORCE_ASPECT_RATIO:
|
|
v4l2object->keep_aspect = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
return FALSE;
|
|
break;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
gboolean
|
|
gst_v4l2_object_get_property_helper (GstV4l2Object * v4l2object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec)
|
|
{
|
|
switch (prop_id) {
|
|
case PROP_DEVICE:
|
|
g_value_set_string (value, v4l2object->videodev);
|
|
break;
|
|
case PROP_DEVICE_NAME:
|
|
{
|
|
const guchar *name = NULL;
|
|
|
|
if (GST_V4L2_IS_OPEN (v4l2object))
|
|
name = v4l2object->vcap.card;
|
|
|
|
g_value_set_string (value, (gchar *) name);
|
|
break;
|
|
}
|
|
case PROP_DEVICE_FD:
|
|
{
|
|
if (GST_V4L2_IS_OPEN (v4l2object))
|
|
g_value_set_int (value, v4l2object->video_fd);
|
|
else
|
|
g_value_set_int (value, DEFAULT_PROP_DEVICE_FD);
|
|
break;
|
|
}
|
|
case PROP_FLAGS:
|
|
{
|
|
guint flags = 0;
|
|
|
|
if (GST_V4L2_IS_OPEN (v4l2object)) {
|
|
flags |= v4l2object->device_caps &
|
|
(V4L2_CAP_VIDEO_CAPTURE |
|
|
V4L2_CAP_VIDEO_OUTPUT |
|
|
V4L2_CAP_VIDEO_OVERLAY |
|
|
V4L2_CAP_VBI_CAPTURE |
|
|
V4L2_CAP_VBI_OUTPUT | V4L2_CAP_TUNER | V4L2_CAP_AUDIO);
|
|
|
|
if (v4l2object->device_caps & V4L2_CAP_VIDEO_CAPTURE_MPLANE)
|
|
flags |= V4L2_CAP_VIDEO_CAPTURE;
|
|
|
|
if (v4l2object->device_caps & V4L2_CAP_VIDEO_OUTPUT_MPLANE)
|
|
flags |= V4L2_CAP_VIDEO_OUTPUT;
|
|
}
|
|
g_value_set_flags (value, flags);
|
|
break;
|
|
}
|
|
case PROP_BRIGHTNESS:
|
|
case PROP_CONTRAST:
|
|
case PROP_SATURATION:
|
|
case PROP_HUE:
|
|
{
|
|
gint cid = gst_v4l2_object_prop_to_cid (prop_id);
|
|
|
|
if (cid != -1) {
|
|
if (GST_V4L2_IS_OPEN (v4l2object)) {
|
|
gint v;
|
|
if (gst_v4l2_get_attribute (v4l2object, cid, &v)) {
|
|
g_value_set_int (value, v);
|
|
}
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
break;
|
|
case PROP_TV_NORM:
|
|
g_value_set_enum (value, v4l2object->tv_norm);
|
|
break;
|
|
case PROP_IO_MODE:
|
|
g_value_set_enum (value, v4l2object->req_mode);
|
|
break;
|
|
case PROP_CAPTURE_IO_MODE:
|
|
g_return_val_if_fail (!V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
|
|
g_value_set_enum (value, v4l2object->req_mode);
|
|
break;
|
|
case PROP_OUTPUT_IO_MODE:
|
|
g_return_val_if_fail (V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
|
|
g_value_set_enum (value, v4l2object->req_mode);
|
|
break;
|
|
case PROP_EXTRA_CONTROLS:
|
|
gst_value_set_structure (value, v4l2object->extra_controls);
|
|
break;
|
|
case PROP_PIXEL_ASPECT_RATIO:
|
|
if (v4l2object->par)
|
|
g_value_transform (v4l2object->par, value);
|
|
break;
|
|
case PROP_FORCE_ASPECT_RATIO:
|
|
g_value_set_boolean (value, v4l2object->keep_aspect);
|
|
break;
|
|
default:
|
|
return FALSE;
|
|
break;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_v4l2_get_driver_min_buffers (GstV4l2Object * v4l2object)
|
|
{
|
|
struct v4l2_control control = { 0, };
|
|
|
|
g_return_if_fail (GST_V4L2_IS_OPEN (v4l2object));
|
|
|
|
if (V4L2_TYPE_IS_OUTPUT (v4l2object->type))
|
|
control.id = V4L2_CID_MIN_BUFFERS_FOR_OUTPUT;
|
|
else
|
|
control.id = V4L2_CID_MIN_BUFFERS_FOR_CAPTURE;
|
|
|
|
if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_CTRL, &control) == 0) {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"driver requires a minimum of %d buffers", control.value);
|
|
v4l2object->min_buffers = control.value;
|
|
} else {
|
|
v4l2object->min_buffers = 0;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_v4l2_set_defaults (GstV4l2Object * v4l2object)
|
|
{
|
|
GstTunerNorm *norm = NULL;
|
|
GstTunerChannel *channel = NULL;
|
|
GstTuner *tuner;
|
|
|
|
if (!GST_IS_TUNER (v4l2object->element))
|
|
return;
|
|
|
|
tuner = GST_TUNER (v4l2object->element);
|
|
|
|
if (v4l2object->tv_norm)
|
|
norm = gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "tv_norm=0x%" G_GINT64_MODIFIER "x, "
|
|
"norm=%p", (guint64) v4l2object->tv_norm, norm);
|
|
if (norm) {
|
|
gst_tuner_set_norm (tuner, norm);
|
|
} else {
|
|
norm =
|
|
GST_TUNER_NORM (gst_tuner_get_norm (GST_TUNER (v4l2object->element)));
|
|
if (norm) {
|
|
v4l2object->tv_norm =
|
|
gst_v4l2_tuner_get_std_id_by_norm (v4l2object, norm);
|
|
gst_tuner_norm_changed (tuner, norm);
|
|
}
|
|
}
|
|
|
|
if (v4l2object->channel)
|
|
channel = gst_tuner_find_channel_by_name (tuner, v4l2object->channel);
|
|
if (channel) {
|
|
gst_tuner_set_channel (tuner, channel);
|
|
} else {
|
|
channel =
|
|
GST_TUNER_CHANNEL (gst_tuner_get_channel (GST_TUNER
|
|
(v4l2object->element)));
|
|
if (channel) {
|
|
g_free (v4l2object->channel);
|
|
v4l2object->channel = g_strdup (channel->label);
|
|
gst_tuner_channel_changed (tuner, channel);
|
|
}
|
|
}
|
|
|
|
if (channel
|
|
&& GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
|
|
if (v4l2object->frequency != 0) {
|
|
gst_tuner_set_frequency (tuner, channel, v4l2object->frequency);
|
|
} else {
|
|
v4l2object->frequency = gst_tuner_get_frequency (tuner, channel);
|
|
if (v4l2object->frequency == 0) {
|
|
/* guess */
|
|
gst_tuner_set_frequency (tuner, channel, 1000);
|
|
} else {
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_v4l2_object_init_poll (GstV4l2Object * v4l2object)
|
|
{
|
|
gst_poll_fd_init (&v4l2object->pollfd);
|
|
v4l2object->pollfd.fd = v4l2object->video_fd;
|
|
gst_poll_add_fd (v4l2object->poll, &v4l2object->pollfd);
|
|
if (V4L2_TYPE_IS_OUTPUT (v4l2object->type))
|
|
gst_poll_fd_ctl_write (v4l2object->poll, &v4l2object->pollfd, TRUE);
|
|
else
|
|
gst_poll_fd_ctl_read (v4l2object->poll, &v4l2object->pollfd, TRUE);
|
|
|
|
v4l2object->can_poll_device = TRUE;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_open (GstV4l2Object * v4l2object, GstV4l2Error * error)
|
|
{
|
|
if (gst_v4l2_open (v4l2object, error))
|
|
gst_v4l2_set_defaults (v4l2object);
|
|
else
|
|
return FALSE;
|
|
|
|
gst_v4l2_object_init_poll (v4l2object);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_open_shared (GstV4l2Object * v4l2object, GstV4l2Object * other)
|
|
{
|
|
if (gst_v4l2_dup (v4l2object, other)) {
|
|
gst_v4l2_object_init_poll (v4l2object);
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_close (GstV4l2Object * v4l2object)
|
|
{
|
|
if (!gst_v4l2_close (v4l2object))
|
|
return FALSE;
|
|
|
|
gst_caps_replace (&v4l2object->probed_caps, NULL);
|
|
|
|
/* reset our copy of the device caps */
|
|
v4l2object->device_caps = 0;
|
|
|
|
if (v4l2object->formats) {
|
|
gst_v4l2_object_clear_format_list (v4l2object);
|
|
}
|
|
|
|
if (v4l2object->par) {
|
|
g_value_unset (v4l2object->par);
|
|
g_free (v4l2object->par);
|
|
v4l2object->par = NULL;
|
|
}
|
|
|
|
if (v4l2object->channel) {
|
|
g_free (v4l2object->channel);
|
|
v4l2object->channel = NULL;
|
|
}
|
|
|
|
/* remove old fd from poll */
|
|
if (v4l2object->poll)
|
|
gst_poll_remove_fd (v4l2object->poll, &v4l2object->pollfd);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static struct v4l2_fmtdesc *
|
|
gst_v4l2_object_get_format_from_fourcc (GstV4l2Object * v4l2object,
|
|
guint32 fourcc)
|
|
{
|
|
struct v4l2_fmtdesc *fmt;
|
|
GSList *walk;
|
|
|
|
if (fourcc == 0)
|
|
return NULL;
|
|
|
|
walk = gst_v4l2_object_get_format_list (v4l2object);
|
|
while (walk) {
|
|
fmt = (struct v4l2_fmtdesc *) walk->data;
|
|
if (fmt->pixelformat == fourcc)
|
|
return fmt;
|
|
/* special case for jpeg */
|
|
if (fmt->pixelformat == V4L2_PIX_FMT_MJPEG ||
|
|
fmt->pixelformat == V4L2_PIX_FMT_JPEG ||
|
|
fmt->pixelformat == V4L2_PIX_FMT_PJPG) {
|
|
if (fourcc == V4L2_PIX_FMT_JPEG || fourcc == V4L2_PIX_FMT_MJPEG ||
|
|
fourcc == V4L2_PIX_FMT_PJPG) {
|
|
return fmt;
|
|
}
|
|
}
|
|
walk = g_slist_next (walk);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
|
|
/* complete made up ranking, the values themselves are meaningless */
|
|
/* These ranks MUST be X such that X<<15 fits on a signed int - see
|
|
the comment at the end of gst_v4l2_object_format_get_rank. */
|
|
#define YUV_BASE_RANK 1000
|
|
#define JPEG_BASE_RANK 500
|
|
#define DV_BASE_RANK 200
|
|
#define RGB_BASE_RANK 100
|
|
#define YUV_ODD_BASE_RANK 50
|
|
#define RGB_ODD_BASE_RANK 25
|
|
#define BAYER_BASE_RANK 15
|
|
#define S910_BASE_RANK 10
|
|
#define GREY_BASE_RANK 5
|
|
#define PWC_BASE_RANK 1
|
|
|
|
static gint
|
|
gst_v4l2_object_format_get_rank (const struct v4l2_fmtdesc *fmt)
|
|
{
|
|
guint32 fourcc = fmt->pixelformat;
|
|
gboolean emulated = ((fmt->flags & V4L2_FMT_FLAG_EMULATED) != 0);
|
|
gint rank = 0;
|
|
|
|
switch (fourcc) {
|
|
case V4L2_PIX_FMT_MJPEG:
|
|
case V4L2_PIX_FMT_PJPG:
|
|
rank = JPEG_BASE_RANK;
|
|
break;
|
|
case V4L2_PIX_FMT_JPEG:
|
|
rank = JPEG_BASE_RANK + 1;
|
|
break;
|
|
case V4L2_PIX_FMT_MPEG: /* MPEG */
|
|
rank = JPEG_BASE_RANK + 2;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_RGB332:
|
|
case V4L2_PIX_FMT_ARGB555:
|
|
case V4L2_PIX_FMT_XRGB555:
|
|
case V4L2_PIX_FMT_RGB555:
|
|
case V4L2_PIX_FMT_ARGB555X:
|
|
case V4L2_PIX_FMT_XRGB555X:
|
|
case V4L2_PIX_FMT_RGB555X:
|
|
case V4L2_PIX_FMT_BGR666:
|
|
case V4L2_PIX_FMT_RGB565:
|
|
case V4L2_PIX_FMT_RGB565X:
|
|
case V4L2_PIX_FMT_RGB444:
|
|
case V4L2_PIX_FMT_Y4:
|
|
case V4L2_PIX_FMT_Y6:
|
|
case V4L2_PIX_FMT_Y10:
|
|
case V4L2_PIX_FMT_Y12:
|
|
case V4L2_PIX_FMT_Y10BPACK:
|
|
case V4L2_PIX_FMT_YUV555:
|
|
case V4L2_PIX_FMT_YUV565:
|
|
case V4L2_PIX_FMT_YUV32:
|
|
case V4L2_PIX_FMT_NV12MT_16X16:
|
|
case V4L2_PIX_FMT_NV42:
|
|
case V4L2_PIX_FMT_H264_MVC:
|
|
rank = RGB_ODD_BASE_RANK;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_RGB24:
|
|
case V4L2_PIX_FMT_BGR24:
|
|
rank = RGB_BASE_RANK - 1;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_RGB32:
|
|
case V4L2_PIX_FMT_BGR32:
|
|
case V4L2_PIX_FMT_ABGR32:
|
|
case V4L2_PIX_FMT_XBGR32:
|
|
case V4L2_PIX_FMT_BGRA32:
|
|
case V4L2_PIX_FMT_BGRX32:
|
|
case V4L2_PIX_FMT_RGBA32:
|
|
case V4L2_PIX_FMT_RGBX32:
|
|
case V4L2_PIX_FMT_ARGB32:
|
|
case V4L2_PIX_FMT_XRGB32:
|
|
rank = RGB_BASE_RANK;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
|
|
rank = GREY_BASE_RANK;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_NV12MT: /* NV12 64x32 tile */
|
|
case V4L2_PIX_FMT_NV21: /* 12 Y/CrCb 4:2:0 */
|
|
case V4L2_PIX_FMT_NV21M: /* Same as NV21 */
|
|
case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
|
|
case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
|
|
case V4L2_PIX_FMT_NV16: /* 16 Y/CbCr 4:2:2 */
|
|
case V4L2_PIX_FMT_NV16M: /* Same as NV16 */
|
|
case V4L2_PIX_FMT_NV61: /* 16 Y/CrCb 4:2:2 */
|
|
case V4L2_PIX_FMT_NV61M: /* Same as NV61 */
|
|
case V4L2_PIX_FMT_NV24: /* 24 Y/CrCb 4:4:4 */
|
|
case V4L2_PIX_FMT_MM21: /* NV12 Y 16x32, UV 16x16 tile */
|
|
case V4L2_PIX_FMT_NV12M_8L128:
|
|
case V4L2_PIX_FMT_NV12M_10BE_8L128:
|
|
rank = YUV_ODD_BASE_RANK;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_YVU410: /* YVU9, 9 bits per pixel */
|
|
rank = YUV_BASE_RANK + 3;
|
|
break;
|
|
case V4L2_PIX_FMT_YUV410: /* YUV9, 9 bits per pixel */
|
|
rank = YUV_BASE_RANK + 2;
|
|
break;
|
|
case V4L2_PIX_FMT_YUV420: /* I420, 12 bits per pixel */
|
|
case V4L2_PIX_FMT_YUV420M:
|
|
rank = YUV_BASE_RANK + 7;
|
|
break;
|
|
case V4L2_PIX_FMT_NV12: /* Y/CbCr 4:2:0, 12 bits per pixel */
|
|
case V4L2_PIX_FMT_NV12M: /* Same as NV12 */
|
|
rank = YUV_BASE_RANK + 8;
|
|
break;
|
|
case V4L2_PIX_FMT_YUYV: /* YUY2, 16 bits per pixel */
|
|
rank = YUV_BASE_RANK + 10;
|
|
break;
|
|
case V4L2_PIX_FMT_YVU420: /* YV12, 12 bits per pixel */
|
|
case V4L2_PIX_FMT_YVU420M:
|
|
rank = YUV_BASE_RANK + 6;
|
|
break;
|
|
case V4L2_PIX_FMT_UYVY: /* UYVY, 16 bits per pixel */
|
|
rank = YUV_BASE_RANK + 9;
|
|
break;
|
|
case V4L2_PIX_FMT_YUV444:
|
|
rank = YUV_BASE_RANK + 6;
|
|
break;
|
|
case V4L2_PIX_FMT_Y41P: /* Y41P, 12 bits per pixel */
|
|
rank = YUV_BASE_RANK + 5;
|
|
break;
|
|
case V4L2_PIX_FMT_YUV411P: /* Y41B, 12 bits per pixel */
|
|
rank = YUV_BASE_RANK + 4;
|
|
break;
|
|
case V4L2_PIX_FMT_YUV422P: /* Y42B, 16 bits per pixel */
|
|
case V4L2_PIX_FMT_YUV422M:
|
|
rank = YUV_BASE_RANK + 8;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_DV:
|
|
rank = DV_BASE_RANK;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_WNVA: /* Winnov hw compress */
|
|
rank = 0;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_SBGGR8:
|
|
case V4L2_PIX_FMT_SGBRG8:
|
|
case V4L2_PIX_FMT_SGRBG8:
|
|
case V4L2_PIX_FMT_SRGGB8:
|
|
case V4L2_PIX_FMT_SBGGR10:
|
|
case V4L2_PIX_FMT_SGBRG10:
|
|
case V4L2_PIX_FMT_SGRBG10:
|
|
case V4L2_PIX_FMT_SRGGB10:
|
|
case V4L2_PIX_FMT_SBGGR12:
|
|
case V4L2_PIX_FMT_SGBRG12:
|
|
case V4L2_PIX_FMT_SGRBG12:
|
|
case V4L2_PIX_FMT_SRGGB12:
|
|
case V4L2_PIX_FMT_SBGGR14:
|
|
case V4L2_PIX_FMT_SGBRG14:
|
|
case V4L2_PIX_FMT_SGRBG14:
|
|
case V4L2_PIX_FMT_SRGGB14:
|
|
case V4L2_PIX_FMT_SBGGR16:
|
|
case V4L2_PIX_FMT_SGBRG16:
|
|
case V4L2_PIX_FMT_SGRBG16:
|
|
case V4L2_PIX_FMT_SRGGB16:
|
|
rank = BAYER_BASE_RANK;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_SN9C10X:
|
|
rank = S910_BASE_RANK;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_PWC1:
|
|
rank = PWC_BASE_RANK;
|
|
break;
|
|
case V4L2_PIX_FMT_PWC2:
|
|
rank = PWC_BASE_RANK;
|
|
break;
|
|
|
|
default:
|
|
rank = 0;
|
|
break;
|
|
}
|
|
|
|
/* All ranks are below 1<<15 so a shift by 15
|
|
* will a) make all non-emulated formats larger
|
|
* than emulated and b) will not overflow
|
|
*/
|
|
if (!emulated)
|
|
rank <<= 15;
|
|
|
|
return rank;
|
|
}
|
|
|
|
|
|
|
|
static gint
|
|
format_cmp_func (gconstpointer a, gconstpointer b)
|
|
{
|
|
const struct v4l2_fmtdesc *fa = a;
|
|
const struct v4l2_fmtdesc *fb = b;
|
|
|
|
if (fa->pixelformat == fb->pixelformat)
|
|
return 0;
|
|
|
|
return gst_v4l2_object_format_get_rank (fb) -
|
|
gst_v4l2_object_format_get_rank (fa);
|
|
}
|
|
|
|
/******************************************************
|
|
* gst_v4l2_object_fill_format_list():
|
|
* create list of supported capture formats
|
|
* return value: TRUE on success, FALSE on error
|
|
******************************************************/
|
|
static gboolean
|
|
gst_v4l2_object_fill_format_list (GstV4l2Object * v4l2object,
|
|
enum v4l2_buf_type type)
|
|
{
|
|
gint n;
|
|
struct v4l2_fmtdesc *format;
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "getting src format enumerations");
|
|
|
|
/* format enumeration */
|
|
for (n = 0;; n++) {
|
|
format = g_new0 (struct v4l2_fmtdesc, 1);
|
|
|
|
format->index = n;
|
|
format->type = type;
|
|
|
|
if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_ENUM_FMT, format) < 0) {
|
|
if (errno == EINVAL) {
|
|
g_free (format);
|
|
break; /* end of enumeration */
|
|
} else {
|
|
goto failed;
|
|
}
|
|
}
|
|
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "index: %u", format->index);
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "type: %d", format->type);
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "flags: %08x", format->flags);
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "description: '%s'",
|
|
format->description);
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "pixelformat: %" GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (format->pixelformat));
|
|
|
|
/* sort formats according to our preference; we do this, because caps
|
|
* are probed in the order the formats are in the list, and the order of
|
|
* formats in the final probed caps matters for things like fixation */
|
|
v4l2object->formats = g_slist_insert_sorted (v4l2object->formats, format,
|
|
(GCompareFunc) format_cmp_func);
|
|
}
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
{
|
|
GSList *l;
|
|
|
|
GST_INFO_OBJECT (v4l2object->dbg_obj, "got %d format(s):", n);
|
|
for (l = v4l2object->formats; l != NULL; l = l->next) {
|
|
format = l->data;
|
|
|
|
GST_INFO_OBJECT (v4l2object->dbg_obj,
|
|
" %" GST_FOURCC_FORMAT "%s", GST_FOURCC_ARGS (format->pixelformat),
|
|
((format->flags & V4L2_FMT_FLAG_EMULATED)) ? " (emulated)" : "");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
failed:
|
|
{
|
|
g_free (format);
|
|
|
|
if (!v4l2object->element)
|
|
return FALSE;
|
|
|
|
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
|
|
(_("Failed to enumerate possible video formats device '%s' can work "
|
|
"with"), v4l2object->videodev),
|
|
("Failed to get number %d in pixelformat enumeration for %s. (%d - %s)",
|
|
n, v4l2object->videodev, errno, g_strerror (errno)));
|
|
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get the list of supported capture formats, a list of
|
|
* `struct v4l2_fmtdesc`.
|
|
*/
|
|
static GSList *
|
|
gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object)
|
|
{
|
|
if (!v4l2object->formats) {
|
|
|
|
/* check usual way */
|
|
gst_v4l2_object_fill_format_list (v4l2object, v4l2object->type);
|
|
|
|
/* if our driver supports multi-planar
|
|
* and if formats are still empty then we can workaround driver bug
|
|
* by also looking up formats as if our device was not supporting
|
|
* multiplanar */
|
|
if (!v4l2object->formats) {
|
|
switch (v4l2object->type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
|
|
gst_v4l2_object_fill_format_list (v4l2object,
|
|
V4L2_BUF_TYPE_VIDEO_CAPTURE);
|
|
break;
|
|
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
|
|
gst_v4l2_object_fill_format_list (v4l2object,
|
|
V4L2_BUF_TYPE_VIDEO_OUTPUT);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return v4l2object->formats;
|
|
}
|
|
|
|
static const GstV4L2FormatDesc *
|
|
gst_v4l2_object_get_desc_from_v4l2fourcc (guint32 fourcc)
|
|
{
|
|
gint i;
|
|
|
|
for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
|
|
if (gst_v4l2_formats[i].v4l2_format == fourcc) {
|
|
return &gst_v4l2_formats[i];
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
GstVideoFormat
|
|
gst_v4l2_object_v4l2fourcc_to_video_format (guint32 fourcc)
|
|
{
|
|
const GstV4L2FormatDesc *desc;
|
|
desc = gst_v4l2_object_get_desc_from_v4l2fourcc (fourcc);
|
|
if (!desc)
|
|
return GST_VIDEO_FORMAT_UNKNOWN;
|
|
|
|
return desc->gst_format;
|
|
}
|
|
|
|
|
|
static gboolean
|
|
gst_v4l2_object_v4l2fourcc_is_rgb (guint32 fourcc)
|
|
{
|
|
const GstV4L2FormatDesc *desc;
|
|
const GstVideoFormatInfo *finfo;
|
|
|
|
desc = gst_v4l2_object_get_desc_from_v4l2fourcc (fourcc);
|
|
if (!desc || desc->gst_format == GST_VIDEO_FORMAT_UNKNOWN)
|
|
return FALSE;
|
|
|
|
finfo = gst_video_format_get_info (desc->gst_format);
|
|
if (finfo) {
|
|
if (GST_VIDEO_FORMAT_INFO_IS_RGB (finfo))
|
|
return TRUE;
|
|
if (GST_VIDEO_FORMAT_INFO_IS_GRAY (finfo))
|
|
return TRUE;
|
|
}
|
|
|
|
if ((desc->flags & GST_V4L2_BAYER) == GST_V4L2_BAYER)
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static const GstV4L2FormatDesc *
|
|
gst_v4l2_object_get_desc_from_video_format (GstVideoFormat format,
|
|
const GstV4L2FormatDesc ** fallback)
|
|
{
|
|
const GstV4L2FormatDesc *ret = NULL;
|
|
gint i;
|
|
|
|
if (fallback)
|
|
*fallback = NULL;
|
|
|
|
for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
|
|
if (gst_v4l2_formats[i].gst_format == format) {
|
|
if (!ret)
|
|
ret = &gst_v4l2_formats[i];
|
|
else if (fallback && !*fallback)
|
|
*fallback = &gst_v4l2_formats[i];
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_v4l2fourcc_is_codec (guint32 fourcc)
|
|
{
|
|
const GstV4L2FormatDesc *desc;
|
|
|
|
desc = gst_v4l2_object_get_desc_from_v4l2fourcc (fourcc);
|
|
if (!desc)
|
|
return FALSE;
|
|
|
|
if (desc->flags & (GST_V4L2_CODEC | GST_V4L2_TRANSPORT))
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static GstStructure *
|
|
gst_v4l2_object_v4l2fourcc_to_bare_struct (guint32 fourcc)
|
|
{
|
|
GstStructure *structure = NULL;
|
|
const gchar *bayer_format = NULL;
|
|
|
|
switch (fourcc) {
|
|
case V4L2_PIX_FMT_MJPEG: /* Motion-JPEG */
|
|
case V4L2_PIX_FMT_PJPG: /* Progressive-JPEG */
|
|
case V4L2_PIX_FMT_JPEG: /* JFIF JPEG */
|
|
structure = gst_structure_new ("image/jpeg",
|
|
"parsed", G_TYPE_BOOLEAN, TRUE, NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_MPEG1:
|
|
structure = gst_structure_new ("video/mpeg",
|
|
"mpegversion", G_TYPE_INT, 1, NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_MPEG2:
|
|
structure = gst_structure_new ("video/mpeg",
|
|
"mpegversion", G_TYPE_INT, 2, NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_MPEG4:
|
|
case V4L2_PIX_FMT_XVID:
|
|
structure = gst_structure_new ("video/mpeg",
|
|
"mpegversion", G_TYPE_INT, 4, "systemstream",
|
|
G_TYPE_BOOLEAN, FALSE, NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_FWHT:
|
|
structure = gst_structure_new_empty ("video/x-fwht");
|
|
break;
|
|
case V4L2_PIX_FMT_H263:
|
|
structure = gst_structure_new ("video/x-h263",
|
|
"variant", G_TYPE_STRING, "itu", NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_H264: /* H.264 */
|
|
structure = gst_structure_new ("video/x-h264",
|
|
"stream-format", G_TYPE_STRING, "byte-stream", "alignment",
|
|
G_TYPE_STRING, "au", NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_H264_NO_SC:
|
|
structure = gst_structure_new ("video/x-h264",
|
|
"stream-format", G_TYPE_STRING, "avc", "alignment",
|
|
G_TYPE_STRING, "au", NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_HEVC: /* H.265 */
|
|
structure = gst_structure_new ("video/x-h265",
|
|
"stream-format", G_TYPE_STRING, "byte-stream", "alignment",
|
|
G_TYPE_STRING, "au", NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_VC1_ANNEX_G:
|
|
case V4L2_PIX_FMT_VC1_ANNEX_L:
|
|
structure = gst_structure_new ("video/x-wmv",
|
|
"wmvversion", G_TYPE_INT, 3, "format", G_TYPE_STRING, "WVC1", NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_VP8:
|
|
structure = gst_structure_new_empty ("video/x-vp8");
|
|
break;
|
|
case V4L2_PIX_FMT_VP9:
|
|
structure = gst_structure_new_empty ("video/x-vp9");
|
|
break;
|
|
case V4L2_PIX_FMT_DV:
|
|
structure =
|
|
gst_structure_new ("video/x-dv", "systemstream", G_TYPE_BOOLEAN, TRUE,
|
|
NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_MPEG: /* MPEG */
|
|
structure = gst_structure_new ("video/mpegts",
|
|
"systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_WNVA: /* Winnov hw compress */
|
|
break;
|
|
case V4L2_PIX_FMT_SBGGR8:
|
|
bayer_format = "bggr";
|
|
break;
|
|
case V4L2_PIX_FMT_SBGGR10:
|
|
bayer_format = "bggr10le";
|
|
break;
|
|
case V4L2_PIX_FMT_SBGGR12:
|
|
bayer_format = "bggr12le";
|
|
break;
|
|
case V4L2_PIX_FMT_SBGGR14:
|
|
bayer_format = "bggr14le";
|
|
break;
|
|
case V4L2_PIX_FMT_SBGGR16:
|
|
bayer_format = "bggr16le";
|
|
break;
|
|
case V4L2_PIX_FMT_SGBRG8:
|
|
bayer_format = "gbrg";
|
|
break;
|
|
case V4L2_PIX_FMT_SGBRG10:
|
|
bayer_format = "gbrg10le";
|
|
break;
|
|
case V4L2_PIX_FMT_SGBRG12:
|
|
bayer_format = "gbrg12le";
|
|
break;
|
|
case V4L2_PIX_FMT_SGBRG14:
|
|
bayer_format = "gbrg14le";
|
|
break;
|
|
case V4L2_PIX_FMT_SGBRG16:
|
|
bayer_format = "gbrg16le";
|
|
break;
|
|
case V4L2_PIX_FMT_SGRBG8:
|
|
bayer_format = "grbg";
|
|
break;
|
|
case V4L2_PIX_FMT_SGRBG10:
|
|
bayer_format = "grbg10le";
|
|
break;
|
|
case V4L2_PIX_FMT_SGRBG12:
|
|
bayer_format = "grbg12le";
|
|
break;
|
|
case V4L2_PIX_FMT_SGRBG14:
|
|
bayer_format = "grbg14le";
|
|
break;
|
|
case V4L2_PIX_FMT_SGRBG16:
|
|
bayer_format = "grbg16le";
|
|
break;
|
|
case V4L2_PIX_FMT_SRGGB8:
|
|
bayer_format = "rggb";
|
|
break;
|
|
case V4L2_PIX_FMT_SRGGB10:
|
|
bayer_format = "rggb10le";
|
|
break;
|
|
case V4L2_PIX_FMT_SRGGB12:
|
|
bayer_format = "rggb12le";
|
|
break;
|
|
case V4L2_PIX_FMT_SRGGB14:
|
|
bayer_format = "rggb14le";
|
|
break;
|
|
case V4L2_PIX_FMT_SRGGB16:
|
|
bayer_format = "rggb16le";
|
|
break;
|
|
case V4L2_PIX_FMT_SN9C10X:
|
|
structure = gst_structure_new_empty ("video/x-sonix");
|
|
break;
|
|
case V4L2_PIX_FMT_PWC1:
|
|
structure = gst_structure_new_empty ("video/x-pwc1");
|
|
break;
|
|
case V4L2_PIX_FMT_PWC2:
|
|
structure = gst_structure_new_empty ("video/x-pwc2");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (bayer_format)
|
|
structure = gst_structure_new ("video/x-bayer", "format", G_TYPE_STRING,
|
|
bayer_format, NULL);
|
|
|
|
if (!structure) {
|
|
GstVideoFormat format;
|
|
format = gst_v4l2_object_v4l2fourcc_to_video_format (fourcc);
|
|
|
|
if (format <= GST_VIDEO_FORMAT_ENCODED)
|
|
GST_DEBUG ("Unsupported V4L2 fourcc 0x%08x %" GST_FOURCC_FORMAT,
|
|
fourcc, GST_FOURCC_ARGS (fourcc));
|
|
else
|
|
structure = gst_structure_new ("video/x-raw",
|
|
"format", G_TYPE_STRING, gst_video_format_to_string (format), NULL);
|
|
}
|
|
|
|
return structure;
|
|
}
|
|
|
|
GstStructure *
|
|
gst_v4l2_object_v4l2fourcc_to_structure (guint32 fourcc)
|
|
{
|
|
GstStructure *template;
|
|
gint i;
|
|
|
|
template = gst_v4l2_object_v4l2fourcc_to_bare_struct (fourcc);
|
|
|
|
if (template == NULL)
|
|
goto done;
|
|
|
|
for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
|
|
if (gst_v4l2_formats[i].v4l2_format != fourcc)
|
|
continue;
|
|
|
|
if (gst_v4l2_formats[i].flags & GST_V4L2_RESOLUTION_AND_RATE) {
|
|
gst_structure_set (template,
|
|
"width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
|
|
"height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
|
|
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
|
|
}
|
|
break;
|
|
}
|
|
|
|
done:
|
|
return template;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_is_raw (GstV4l2Object * v4l2object)
|
|
{
|
|
gint i;
|
|
|
|
if (GST_VIDEO_INFO_FORMAT (&v4l2object->info) != GST_VIDEO_FORMAT_ENCODED)
|
|
return TRUE;
|
|
|
|
for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
|
|
if (gst_v4l2_formats[i].v4l2_format == GST_V4L2_PIXELFORMAT (v4l2object)) {
|
|
return !!(gst_v4l2_formats[i].flags & GST_V4L2_RAW);
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
/* Add an 'alternate' variant of the caps with the feature */
|
|
static void
|
|
add_alternate_variant (GstV4l2Object * v4l2object, GstCaps * caps,
|
|
GstStructure * structure)
|
|
{
|
|
GstStructure *alt_s;
|
|
|
|
if (v4l2object && v4l2object->never_interlaced)
|
|
return;
|
|
|
|
if (!gst_structure_has_name (structure, "video/x-raw"))
|
|
return;
|
|
|
|
alt_s = gst_structure_copy (structure);
|
|
gst_structure_set (alt_s, "interlace-mode", G_TYPE_STRING, "alternate", NULL);
|
|
|
|
gst_caps_append_structure_full (caps, alt_s,
|
|
gst_caps_features_new_static_str (GST_CAPS_FEATURE_FORMAT_INTERLACED,
|
|
NULL));
|
|
}
|
|
|
|
static void
|
|
add_non_colorimetry_caps (GstV4l2Object * v4l2object, GstCaps * caps)
|
|
{
|
|
gint caps_size;
|
|
gint i;
|
|
|
|
caps_size = gst_caps_get_size (caps);
|
|
for (i = 0; i < caps_size; i++) {
|
|
GstStructure *structure = gst_caps_get_structure (caps, i);
|
|
GstCapsFeatures *features = gst_caps_get_features (caps, i);
|
|
|
|
if (gst_structure_has_name (structure, "video/x-raw")
|
|
&& gst_structure_has_field (structure, "colorimetry")) {
|
|
GstStructure *alt_s = gst_structure_copy (structure);
|
|
gst_structure_remove_field (alt_s, "colorimetry");
|
|
if (gst_caps_features_contains (features,
|
|
GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY))
|
|
gst_caps_append_structure (caps, alt_s);
|
|
else
|
|
gst_caps_append_structure_full (caps, alt_s,
|
|
gst_caps_features_copy (features));
|
|
}
|
|
}
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_v4l2_object_get_caps_helper (GstV4L2FormatFlags flags,
|
|
const GstV4L2FormatDesc * formats, const guint len)
|
|
{
|
|
GstStructure *structure;
|
|
GstCaps *caps, *caps_interlaced;
|
|
guint i;
|
|
|
|
caps = gst_caps_new_empty ();
|
|
caps_interlaced = gst_caps_new_empty ();
|
|
for (i = 0; i < len; i++) {
|
|
guint32 fourcc = formats[i].v4l2_format;
|
|
|
|
if ((formats[i].flags & flags) == 0)
|
|
continue;
|
|
|
|
structure = gst_v4l2_object_v4l2fourcc_to_bare_struct (fourcc);
|
|
|
|
if (structure) {
|
|
GstStructure *alt_s = NULL;
|
|
|
|
if (formats[i].flags & GST_V4L2_RESOLUTION_AND_RATE) {
|
|
gst_structure_set (structure,
|
|
"width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
|
|
"height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
|
|
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
|
|
}
|
|
|
|
switch (fourcc) {
|
|
case V4L2_PIX_FMT_RGB32:
|
|
alt_s = gst_structure_copy (structure);
|
|
gst_structure_set (alt_s, "format", G_TYPE_STRING, "ARGB", NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_BGR32:
|
|
alt_s = gst_structure_copy (structure);
|
|
gst_structure_set (alt_s, "format", G_TYPE_STRING, "BGRA", NULL);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
gst_caps_append_structure (caps, structure);
|
|
|
|
if (alt_s) {
|
|
gst_caps_append_structure (caps, alt_s);
|
|
add_alternate_variant (NULL, caps_interlaced, alt_s);
|
|
}
|
|
|
|
add_alternate_variant (NULL, caps_interlaced, structure);
|
|
}
|
|
}
|
|
|
|
caps = gst_caps_simplify (caps);
|
|
caps_interlaced = gst_caps_simplify (caps_interlaced);
|
|
|
|
return gst_caps_merge (caps, caps_interlaced);
|
|
}
|
|
|
|
GstCaps *
|
|
gst_v4l2_object_get_all_caps (void)
|
|
{
|
|
static GstCaps *caps = NULL;
|
|
|
|
if (g_once_init_enter (&caps)) {
|
|
GstCaps *all_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_ALL,
|
|
gst_v4l2_formats, GST_V4L2_FORMAT_COUNT);
|
|
GST_MINI_OBJECT_FLAG_SET (all_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
|
|
g_once_init_leave (&caps, all_caps);
|
|
}
|
|
|
|
return caps;
|
|
}
|
|
|
|
GstCaps *
|
|
gst_v4l2_object_get_raw_caps (void)
|
|
{
|
|
static GstCaps *caps = NULL;
|
|
|
|
if (g_once_init_enter (&caps)) {
|
|
GstCaps *raw_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_RAW,
|
|
gst_v4l2_formats, GST_V4L2_FORMAT_COUNT);
|
|
GST_MINI_OBJECT_FLAG_SET (raw_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
|
|
g_once_init_leave (&caps, raw_caps);
|
|
}
|
|
|
|
return caps;
|
|
}
|
|
|
|
GstCaps *
|
|
gst_v4l2_object_get_codec_caps (void)
|
|
{
|
|
static GstCaps *caps = NULL;
|
|
|
|
if (g_once_init_enter (&caps)) {
|
|
GstCaps *codec_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_CODEC,
|
|
gst_v4l2_formats, GST_V4L2_FORMAT_COUNT);
|
|
GST_MINI_OBJECT_FLAG_SET (codec_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
|
|
g_once_init_leave (&caps, codec_caps);
|
|
}
|
|
|
|
return caps;
|
|
}
|
|
|
|
/* This is a minimalist probe, for speed, we only enumerate formats */
|
|
GstCaps *
|
|
gst_v4l2_object_probe_template_caps (const gchar * device, gint video_fd,
|
|
enum v4l2_buf_type type)
|
|
{
|
|
GArray *formats = g_array_new (FALSE, TRUE, sizeof (GstV4L2FormatDesc));
|
|
GstCaps *caps;
|
|
gint n;
|
|
|
|
GST_DEBUG ("Getting %s format enumerations", device);
|
|
for (n = 0;; n++) {
|
|
const GstV4L2FormatDesc *desc;
|
|
struct v4l2_fmtdesc fmtdesc = {
|
|
.index = n,
|
|
.type = type,
|
|
};
|
|
|
|
/* FIXME, missing libv4l2 support */
|
|
if (ioctl (video_fd, VIDIOC_ENUM_FMT, &fmtdesc) < 0)
|
|
break; /* end of enumeration */
|
|
|
|
GST_LOG ("index: %u", fmtdesc.index);
|
|
GST_LOG ("type: %d", fmtdesc.type);
|
|
GST_LOG ("flags: %08x", fmtdesc.flags);
|
|
GST_LOG ("description: '%s'", fmtdesc.description);
|
|
GST_LOG ("pixelformat: %" GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (fmtdesc.pixelformat));
|
|
|
|
desc = gst_v4l2_object_get_desc_from_v4l2fourcc (fmtdesc.pixelformat);
|
|
if (desc)
|
|
g_array_append_val (formats, *desc);
|
|
}
|
|
|
|
caps = gst_v4l2_object_get_caps_helper (GST_V4L2_ALL,
|
|
(const GstV4L2FormatDesc *) formats->data, formats->len);
|
|
g_array_free (formats, TRUE);
|
|
|
|
return caps;
|
|
}
|
|
|
|
/* collect data for the given caps
|
|
* @caps: given input caps
|
|
* @format: location for the v4l format
|
|
* @w/@h: location for width and height
|
|
* @fps_n/@fps_d: location for framerate
|
|
* @size: location for expected size of the frame or 0 if unknown
|
|
*/
|
|
static gboolean
|
|
gst_v4l2_object_get_caps_info (GstV4l2Object * v4l2object, GstCaps * caps,
|
|
struct v4l2_fmtdesc **format, GstVideoInfo * info)
|
|
{
|
|
GstStructure *structure;
|
|
guint32 fourcc = 0, fourcc_nc = 0;
|
|
const gchar *mimetype;
|
|
struct v4l2_fmtdesc *fmt = NULL;
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
mimetype = gst_structure_get_name (structure);
|
|
|
|
if (!gst_video_info_from_caps (info, caps))
|
|
goto invalid_format;
|
|
|
|
if (g_str_equal (mimetype, "video/x-raw")) {
|
|
const GstV4L2FormatDesc *desc, *fallback_desc;
|
|
GstVideoFormat format = GST_VIDEO_INFO_FORMAT (info);
|
|
desc = gst_v4l2_object_get_desc_from_video_format (format, &fallback_desc);
|
|
if (desc)
|
|
fourcc_nc = desc->v4l2_format;
|
|
if (fallback_desc)
|
|
fourcc = fallback_desc->v4l2_format;
|
|
} else if (g_str_equal (mimetype, "video/mpegts")) {
|
|
fourcc = V4L2_PIX_FMT_MPEG;
|
|
} else if (g_str_equal (mimetype, "video/x-dv")) {
|
|
fourcc = V4L2_PIX_FMT_DV;
|
|
} else if (g_str_equal (mimetype, "image/jpeg")) {
|
|
fourcc = V4L2_PIX_FMT_JPEG;
|
|
} else if (g_str_equal (mimetype, "video/mpeg")) {
|
|
gint version;
|
|
if (gst_structure_get_int (structure, "mpegversion", &version)) {
|
|
switch (version) {
|
|
case 1:
|
|
fourcc = V4L2_PIX_FMT_MPEG1;
|
|
break;
|
|
case 2:
|
|
fourcc = V4L2_PIX_FMT_MPEG2;
|
|
break;
|
|
case 4:
|
|
fourcc = V4L2_PIX_FMT_MPEG4;
|
|
fourcc_nc = V4L2_PIX_FMT_XVID;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
} else if (g_str_equal (mimetype, "video/x-fwht")) {
|
|
fourcc = V4L2_PIX_FMT_FWHT;
|
|
} else if (g_str_equal (mimetype, "video/x-h263")) {
|
|
fourcc = V4L2_PIX_FMT_H263;
|
|
} else if (g_str_equal (mimetype, "video/x-h264")) {
|
|
const gchar *stream_format =
|
|
gst_structure_get_string (structure, "stream-format");
|
|
if (g_str_equal (stream_format, "avc"))
|
|
fourcc = V4L2_PIX_FMT_H264_NO_SC;
|
|
else
|
|
fourcc = V4L2_PIX_FMT_H264;
|
|
} else if (g_str_equal (mimetype, "video/x-h265")) {
|
|
fourcc = V4L2_PIX_FMT_HEVC;
|
|
} else if (g_str_equal (mimetype, "video/x-vp8")) {
|
|
fourcc = V4L2_PIX_FMT_VP8;
|
|
} else if (g_str_equal (mimetype, "video/x-vp9")) {
|
|
fourcc = V4L2_PIX_FMT_VP9;
|
|
} else if (g_str_equal (mimetype, "video/x-bayer")) {
|
|
const gchar *format = gst_structure_get_string (structure, "format");
|
|
if (format) {
|
|
if (!g_ascii_strcasecmp (format, "bggr"))
|
|
fourcc = V4L2_PIX_FMT_SBGGR8;
|
|
else if (!g_ascii_strcasecmp (format, "gbrg"))
|
|
fourcc = V4L2_PIX_FMT_SGBRG8;
|
|
else if (!g_ascii_strcasecmp (format, "grbg"))
|
|
fourcc = V4L2_PIX_FMT_SGRBG8;
|
|
else if (!g_ascii_strcasecmp (format, "rggb"))
|
|
fourcc = V4L2_PIX_FMT_SRGGB8;
|
|
else if (!g_ascii_strcasecmp (format, "bggr10le"))
|
|
fourcc = V4L2_PIX_FMT_SBGGR10;
|
|
else if (!g_ascii_strcasecmp (format, "gbrg10le"))
|
|
fourcc = V4L2_PIX_FMT_SGBRG10;
|
|
else if (!g_ascii_strcasecmp (format, "grbg10le"))
|
|
fourcc = V4L2_PIX_FMT_SGRBG10;
|
|
else if (!g_ascii_strcasecmp (format, "rggb10le"))
|
|
fourcc = V4L2_PIX_FMT_SRGGB10;
|
|
else if (!g_ascii_strcasecmp (format, "bggr12le"))
|
|
fourcc = V4L2_PIX_FMT_SBGGR12;
|
|
else if (!g_ascii_strcasecmp (format, "gbrg12le"))
|
|
fourcc = V4L2_PIX_FMT_SGBRG12;
|
|
else if (!g_ascii_strcasecmp (format, "grbg12le"))
|
|
fourcc = V4L2_PIX_FMT_SGRBG12;
|
|
else if (!g_ascii_strcasecmp (format, "rggb12le"))
|
|
fourcc = V4L2_PIX_FMT_SRGGB12;
|
|
else if (!g_ascii_strcasecmp (format, "bggr14le"))
|
|
fourcc = V4L2_PIX_FMT_SBGGR14;
|
|
else if (!g_ascii_strcasecmp (format, "gbrg14le"))
|
|
fourcc = V4L2_PIX_FMT_SGBRG14;
|
|
else if (!g_ascii_strcasecmp (format, "grbg14le"))
|
|
fourcc = V4L2_PIX_FMT_SGRBG14;
|
|
else if (!g_ascii_strcasecmp (format, "rggb14le"))
|
|
fourcc = V4L2_PIX_FMT_SRGGB14;
|
|
else if (!g_ascii_strcasecmp (format, "bggr16le"))
|
|
fourcc = V4L2_PIX_FMT_SBGGR16;
|
|
else if (!g_ascii_strcasecmp (format, "gbrg16le"))
|
|
fourcc = V4L2_PIX_FMT_SGBRG16;
|
|
else if (!g_ascii_strcasecmp (format, "grbg16le"))
|
|
fourcc = V4L2_PIX_FMT_SGRBG16;
|
|
else if (!g_ascii_strcasecmp (format, "rggb16le"))
|
|
fourcc = V4L2_PIX_FMT_SRGGB16;
|
|
}
|
|
} else if (g_str_equal (mimetype, "video/x-sonix")) {
|
|
fourcc = V4L2_PIX_FMT_SN9C10X;
|
|
} else if (g_str_equal (mimetype, "video/x-pwc1")) {
|
|
fourcc = V4L2_PIX_FMT_PWC1;
|
|
} else if (g_str_equal (mimetype, "video/x-pwc2")) {
|
|
fourcc = V4L2_PIX_FMT_PWC2;
|
|
}
|
|
|
|
/* Prefer the non-contiguous if supported */
|
|
v4l2object->prefered_non_contiguous = TRUE;
|
|
|
|
if (fourcc_nc)
|
|
fmt = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc_nc);
|
|
else if (fourcc == 0)
|
|
goto unhandled_format;
|
|
|
|
if (fmt == NULL) {
|
|
fmt = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc);
|
|
v4l2object->prefered_non_contiguous = FALSE;
|
|
}
|
|
|
|
if (fmt == NULL)
|
|
goto unsupported_format;
|
|
|
|
*format = fmt;
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
invalid_format:
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Invalid format %" GST_PTR_FORMAT, caps);
|
|
return FALSE;
|
|
}
|
|
unhandled_format:
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Unhandled format %" GST_PTR_FORMAT, caps);
|
|
return FALSE;
|
|
}
|
|
unsupported_format:
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Unsupported format: %" GST_PTR_FORMAT, caps);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_get_nearest_size (GstV4l2Object * v4l2object,
|
|
guint32 pixelformat, gint * width, gint * height);
|
|
|
|
static void
|
|
gst_v4l2_object_add_aspect_ratio (GstV4l2Object * v4l2object, GstStructure * s)
|
|
{
|
|
if (v4l2object->keep_aspect && v4l2object->par)
|
|
gst_structure_set_value (s, "pixel-aspect-ratio", v4l2object->par);
|
|
}
|
|
|
|
/* returns TRUE if the value was changed in place, otherwise FALSE */
|
|
static gboolean
|
|
gst_v4l2src_value_simplify (GValue * val)
|
|
{
|
|
/* simplify list of one value to one value */
|
|
if (GST_VALUE_HOLDS_LIST (val) && gst_value_list_get_size (val) == 1) {
|
|
const GValue *list_val;
|
|
GValue new_val = G_VALUE_INIT;
|
|
|
|
list_val = gst_value_list_get_value (val, 0);
|
|
g_value_init (&new_val, G_VALUE_TYPE (list_val));
|
|
g_value_copy (list_val, &new_val);
|
|
g_value_unset (val);
|
|
*val = new_val;
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_get_interlace_mode (enum v4l2_field field,
|
|
GstVideoInterlaceMode * interlace_mode)
|
|
{
|
|
switch (field) {
|
|
case V4L2_FIELD_ANY:
|
|
GST_ERROR
|
|
("Driver bug detected - check driver with v4l2-compliance from http://git.linuxtv.org/v4l-utils.git\n");
|
|
return FALSE;
|
|
case V4L2_FIELD_NONE:
|
|
*interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
|
|
return TRUE;
|
|
case V4L2_FIELD_INTERLACED:
|
|
case V4L2_FIELD_INTERLACED_TB:
|
|
case V4L2_FIELD_INTERLACED_BT:
|
|
*interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
|
|
return TRUE;
|
|
case V4L2_FIELD_ALTERNATE:
|
|
*interlace_mode = GST_VIDEO_INTERLACE_MODE_ALTERNATE;
|
|
return TRUE;
|
|
default:
|
|
GST_ERROR ("Unknown enum v4l2_field %d", field);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_get_colorspace (GstV4l2Object * v4l2object,
|
|
struct v4l2_format *fmt, GstVideoColorimetry * cinfo)
|
|
{
|
|
gboolean is_rgb = FALSE;
|
|
enum v4l2_colorspace colorspace;
|
|
enum v4l2_quantization range;
|
|
enum v4l2_ycbcr_encoding matrix;
|
|
enum v4l2_xfer_func transfer;
|
|
guint32 pixelformat;
|
|
gboolean ret = TRUE;
|
|
|
|
if (V4L2_TYPE_IS_MULTIPLANAR (fmt->type)) {
|
|
colorspace = fmt->fmt.pix_mp.colorspace;
|
|
range = fmt->fmt.pix_mp.quantization;
|
|
matrix = fmt->fmt.pix_mp.ycbcr_enc;
|
|
transfer = fmt->fmt.pix_mp.xfer_func;
|
|
pixelformat = fmt->fmt.pix_mp.pixelformat;
|
|
} else {
|
|
colorspace = fmt->fmt.pix.colorspace;
|
|
range = fmt->fmt.pix.quantization;
|
|
matrix = fmt->fmt.pix.ycbcr_enc;
|
|
transfer = fmt->fmt.pix.xfer_func;
|
|
pixelformat = fmt->fmt.pix.pixelformat;
|
|
}
|
|
|
|
/* Detect that we are dealing with RGB, this can be that the pixelformat is
|
|
* an RGB format, or we have an encoded format for which RGB color matrix
|
|
* was set in set_format. */
|
|
if (gst_v4l2_object_v4l2fourcc_is_rgb (pixelformat) ||
|
|
(v4l2object->matrix == GST_VIDEO_COLOR_MATRIX_RGB &&
|
|
gst_v4l2_object_v4l2fourcc_is_codec (pixelformat)))
|
|
is_rgb = TRUE;
|
|
else
|
|
is_rgb = FALSE;
|
|
|
|
/* First step, set the defaults for each primaries */
|
|
switch (colorspace) {
|
|
case V4L2_COLORSPACE_SMPTE170M:
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_BT601;
|
|
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE170M;
|
|
break;
|
|
case V4L2_COLORSPACE_REC709:
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT709;
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
|
|
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
|
|
break;
|
|
case V4L2_COLORSPACE_SRGB:
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
|
|
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
|
|
break;
|
|
case V4L2_COLORSPACE_JPEG:
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
|
|
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
|
|
break;
|
|
case V4L2_COLORSPACE_OPRGB:
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_ADOBERGB;
|
|
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_ADOBERGB;
|
|
break;
|
|
case V4L2_COLORSPACE_BT2020:
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_BT2020_12;
|
|
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT2020;
|
|
break;
|
|
case V4L2_COLORSPACE_SMPTE240M:
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE240M;
|
|
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE240M;
|
|
break;
|
|
case V4L2_COLORSPACE_470_SYSTEM_M:
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
|
|
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470M;
|
|
break;
|
|
case V4L2_COLORSPACE_470_SYSTEM_BG:
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
|
|
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470BG;
|
|
break;
|
|
case V4L2_COLORSPACE_RAW:
|
|
/* Explicitly unknown */
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
|
|
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_UNKNOWN;
|
|
break;
|
|
default:
|
|
GST_DEBUG ("Unknown enum v4l2_colorspace %d", colorspace);
|
|
ret = FALSE;
|
|
break;
|
|
}
|
|
|
|
if (!ret)
|
|
goto done;
|
|
|
|
/* Second step, apply any custom variation */
|
|
switch (range) {
|
|
case V4L2_QUANTIZATION_FULL_RANGE:
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
|
|
break;
|
|
case V4L2_QUANTIZATION_LIM_RANGE:
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
|
|
break;
|
|
case V4L2_QUANTIZATION_DEFAULT:
|
|
/* replicated V4L2_MAP_QUANTIZATION_DEFAULT macro behavior */
|
|
if (is_rgb || colorspace == V4L2_COLORSPACE_JPEG)
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
|
|
else
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
|
|
break;
|
|
default:
|
|
GST_WARNING ("Unknown enum v4l2_quantization value %d", range);
|
|
cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
switch (matrix) {
|
|
case V4L2_YCBCR_ENC_XV601:
|
|
case V4L2_YCBCR_ENC_SYCC:
|
|
GST_FIXME ("XV601 and SYCC not defined, assuming 601");
|
|
/* fallthrough */
|
|
case V4L2_YCBCR_ENC_601:
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
|
|
break;
|
|
case V4L2_YCBCR_ENC_XV709:
|
|
GST_FIXME ("XV709 not defined, assuming 709");
|
|
/* fallthrough */
|
|
case V4L2_YCBCR_ENC_709:
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT709;
|
|
break;
|
|
case V4L2_YCBCR_ENC_BT2020_CONST_LUM:
|
|
GST_FIXME ("BT2020 with constant luma is not defined, assuming BT2020");
|
|
/* fallthrough */
|
|
case V4L2_YCBCR_ENC_BT2020:
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
|
|
break;
|
|
case V4L2_YCBCR_ENC_SMPTE240M:
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
|
|
break;
|
|
case V4L2_YCBCR_ENC_DEFAULT:
|
|
/* nothing, just use defaults for colorspace */
|
|
break;
|
|
default:
|
|
GST_WARNING ("Unknown enum v4l2_ycbcr_encoding value %d", matrix);
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
/* Set identity matrix for R'G'B' formats to avoid creating
|
|
* confusion. This though is cosmetic as it's now properly ignored by
|
|
* the video info API and videoconvert. */
|
|
if (is_rgb)
|
|
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_RGB;
|
|
|
|
switch (transfer) {
|
|
case V4L2_XFER_FUNC_709:
|
|
if (colorspace == V4L2_COLORSPACE_BT2020 && fmt->fmt.pix.height >= 2160)
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_BT2020_12;
|
|
else if (colorspace == V4L2_COLORSPACE_SMPTE170M)
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_BT601;
|
|
else
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
|
|
|
|
if (v4l2object->transfer)
|
|
cinfo->transfer = v4l2object->transfer;
|
|
break;
|
|
case V4L2_XFER_FUNC_SRGB:
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
|
|
break;
|
|
case V4L2_XFER_FUNC_OPRGB:
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_ADOBERGB;
|
|
break;
|
|
case V4L2_XFER_FUNC_SMPTE240M:
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE240M;
|
|
break;
|
|
case V4L2_XFER_FUNC_NONE:
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_GAMMA10;
|
|
break;
|
|
case V4L2_XFER_FUNC_SMPTE2084:
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE2084;
|
|
break;
|
|
case V4L2_XFER_FUNC_DEFAULT:
|
|
/* nothing, just use defaults for colorspace */
|
|
break;
|
|
default:
|
|
GST_WARNING ("Unknown enum v4l2_xfer_func value %d", transfer);
|
|
cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_get_streamparm (GstV4l2Object * v4l2object, GstVideoInfo * info)
|
|
{
|
|
struct v4l2_streamparm streamparm;
|
|
memset (&streamparm, 0x00, sizeof (struct v4l2_streamparm));
|
|
streamparm.type = v4l2object->type;
|
|
if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_PARM, &streamparm) < 0) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj, "VIDIOC_G_PARM failed");
|
|
return FALSE;
|
|
}
|
|
if ((streamparm.parm.capture.timeperframe.numerator != 0)
|
|
&& (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE
|
|
|| v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) {
|
|
GST_VIDEO_INFO_FPS_N (info) =
|
|
streamparm.parm.capture.timeperframe.denominator;
|
|
GST_VIDEO_INFO_FPS_D (info) =
|
|
streamparm.parm.capture.timeperframe.numerator;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static int
|
|
gst_v4l2_object_try_fmt (GstV4l2Object * v4l2object,
|
|
struct v4l2_format *try_fmt)
|
|
{
|
|
int fd = v4l2object->video_fd;
|
|
struct v4l2_format fmt;
|
|
int r;
|
|
|
|
memcpy (&fmt, try_fmt, sizeof (fmt));
|
|
r = v4l2object->ioctl (fd, VIDIOC_TRY_FMT, &fmt);
|
|
|
|
if (r < 0 && errno == ENOTTY) {
|
|
/* The driver might not implement TRY_FMT, in which case we will try
|
|
S_FMT to probe */
|
|
if (GST_V4L2_IS_ACTIVE (v4l2object))
|
|
goto error;
|
|
|
|
memcpy (&fmt, try_fmt, sizeof (fmt));
|
|
r = v4l2object->ioctl (fd, VIDIOC_S_FMT, &fmt);
|
|
}
|
|
memcpy (try_fmt, &fmt, sizeof (fmt));
|
|
|
|
return r;
|
|
|
|
error:
|
|
memcpy (try_fmt, &fmt, sizeof (fmt));
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Unable to try format: %s", g_strerror (errno));
|
|
return r;
|
|
}
|
|
|
|
|
|
static void
|
|
gst_v4l2_object_add_interlace_mode (GstV4l2Object * v4l2object,
|
|
GstStructure * s, guint32 width, guint32 height, guint32 pixelformat)
|
|
{
|
|
struct v4l2_format fmt;
|
|
GValue interlace_formats = { 0, };
|
|
enum v4l2_field formats[] = { V4L2_FIELD_NONE,
|
|
V4L2_FIELD_INTERLACED, V4L2_FIELD_ALTERNATE
|
|
};
|
|
gsize i;
|
|
GstVideoInterlaceMode interlace_mode, prev = -1;
|
|
|
|
if (!g_str_equal (gst_structure_get_name (s), "video/x-raw"))
|
|
return;
|
|
|
|
if (v4l2object->never_interlaced) {
|
|
gst_structure_set (s, "interlace-mode", G_TYPE_STRING, "progressive", NULL);
|
|
return;
|
|
}
|
|
|
|
g_value_init (&interlace_formats, GST_TYPE_LIST);
|
|
|
|
/* Try thrice - once for NONE, once for INTERLACED and once for ALTERNATE. */
|
|
for (i = 0; i < G_N_ELEMENTS (formats); i++) {
|
|
memset (&fmt, 0, sizeof (fmt));
|
|
fmt.type = v4l2object->type;
|
|
fmt.fmt.pix.width = width;
|
|
fmt.fmt.pix.height = height;
|
|
fmt.fmt.pix.pixelformat = pixelformat;
|
|
fmt.fmt.pix.field = formats[i];
|
|
|
|
if (fmt.fmt.pix.field == V4L2_FIELD_ALTERNATE)
|
|
fmt.fmt.pix.height /= 2;
|
|
|
|
/* if skip_try_fmt_probes is set it's up to the caller to filter out the
|
|
* formats from the formats requested by peer.
|
|
* For this negotiation to work with 'alternate' we need the caps to contain
|
|
* the feature so we have an intersection with downstream caps.
|
|
*/
|
|
if (!v4l2object->skip_try_fmt_probes
|
|
&& gst_v4l2_object_try_fmt (v4l2object, &fmt) != 0)
|
|
continue;
|
|
|
|
if (gst_v4l2_object_get_interlace_mode (fmt.fmt.pix.field, &interlace_mode)
|
|
&& prev != interlace_mode) {
|
|
GValue interlace_enum = { 0, };
|
|
const gchar *mode_string;
|
|
g_value_init (&interlace_enum, G_TYPE_STRING);
|
|
mode_string = gst_video_interlace_mode_to_string (interlace_mode);
|
|
g_value_set_string (&interlace_enum, mode_string);
|
|
gst_value_list_append_and_take_value (&interlace_formats,
|
|
&interlace_enum);
|
|
prev = interlace_mode;
|
|
}
|
|
}
|
|
|
|
if (gst_v4l2src_value_simplify (&interlace_formats)
|
|
|| gst_value_list_get_size (&interlace_formats) > 0)
|
|
gst_structure_take_value (s, "interlace-mode", &interlace_formats);
|
|
else {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Failed to determine interlace mode");
|
|
g_value_unset (&interlace_formats);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
gst_v4l2_object_fill_colorimetry_list (GValue * list,
|
|
GstVideoColorimetry * cinfo)
|
|
{
|
|
GValue colorimetry = G_VALUE_INIT;
|
|
guint size;
|
|
guint i;
|
|
gboolean found = FALSE;
|
|
|
|
g_value_init (&colorimetry, G_TYPE_STRING);
|
|
g_value_take_string (&colorimetry, gst_video_colorimetry_to_string (cinfo));
|
|
|
|
/* only insert if no duplicate */
|
|
size = gst_value_list_get_size (list);
|
|
for (i = 0; i < size; i++) {
|
|
const GValue *tmp;
|
|
|
|
tmp = gst_value_list_get_value (list, i);
|
|
if (gst_value_compare (&colorimetry, tmp) == GST_VALUE_EQUAL) {
|
|
found = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found)
|
|
gst_value_list_append_and_take_value (list, &colorimetry);
|
|
else
|
|
g_value_unset (&colorimetry);
|
|
}
|
|
|
|
static void
|
|
gst_v4l2_object_add_colorspace (GstV4l2Object * v4l2object, GstStructure * s,
|
|
guint32 width, guint32 height, guint32 pixelformat)
|
|
{
|
|
struct v4l2_format fmt;
|
|
GValue list = G_VALUE_INIT;
|
|
GstVideoColorimetry cinfo;
|
|
enum v4l2_colorspace req_cspace;
|
|
|
|
memset (&fmt, 0, sizeof (fmt));
|
|
fmt.type = v4l2object->type;
|
|
fmt.fmt.pix.width = width;
|
|
fmt.fmt.pix.height = height;
|
|
fmt.fmt.pix.pixelformat = pixelformat;
|
|
|
|
g_value_init (&list, GST_TYPE_LIST);
|
|
|
|
/* step 1: get device default colorspace and insert it first as
|
|
* it should be the preferred one */
|
|
if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0) {
|
|
if (gst_v4l2_object_get_colorspace (v4l2object, &fmt, &cinfo))
|
|
gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
|
|
}
|
|
|
|
/* step 2: probe all colorspace other than default
|
|
* We don't probe all colorspace, range, matrix and transfer combination to
|
|
* avoid ioctl flooding which could greatly increase initialization time
|
|
* with low-speed devices (UVC...) */
|
|
for (req_cspace = V4L2_COLORSPACE_SMPTE170M;
|
|
req_cspace <= V4L2_COLORSPACE_RAW; req_cspace++) {
|
|
/* V4L2_COLORSPACE_BT878 is deprecated and shall not be used, so skip */
|
|
if (req_cspace == V4L2_COLORSPACE_BT878)
|
|
continue;
|
|
|
|
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
|
|
fmt.fmt.pix_mp.colorspace = req_cspace;
|
|
else
|
|
fmt.fmt.pix.colorspace = req_cspace;
|
|
|
|
if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0) {
|
|
enum v4l2_colorspace colorspace;
|
|
|
|
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
|
|
colorspace = fmt.fmt.pix_mp.colorspace;
|
|
else
|
|
colorspace = fmt.fmt.pix.colorspace;
|
|
|
|
if (colorspace == req_cspace) {
|
|
if (gst_v4l2_object_get_colorspace (v4l2object, &fmt, &cinfo))
|
|
gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
|
|
if (colorspace == V4L2_COLORSPACE_REC709) {
|
|
/* support for full-range variants of colorspaces V4L2_COLORSPACE_REC709
|
|
* (such as Apple's full-range bt709 variant 1:3:5:1) */
|
|
struct v4l2_format alt_fmt;
|
|
memcpy (&alt_fmt, &fmt, sizeof (alt_fmt));
|
|
|
|
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
|
|
alt_fmt.fmt.pix_mp.quantization = V4L2_QUANTIZATION_FULL_RANGE;
|
|
else
|
|
alt_fmt.fmt.pix.quantization = V4L2_QUANTIZATION_FULL_RANGE;
|
|
|
|
if (gst_v4l2_object_get_colorspace (v4l2object, &alt_fmt, &cinfo))
|
|
gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (gst_value_list_get_size (&list) > 0)
|
|
gst_structure_take_value (s, "colorimetry", &list);
|
|
else
|
|
g_value_unset (&list);
|
|
|
|
return;
|
|
}
|
|
|
|
/* The frame interval enumeration code first appeared in Linux 2.6.19. */
|
|
static GstStructure *
|
|
gst_v4l2_object_probe_caps_for_format_and_size (GstV4l2Object * v4l2object,
|
|
guint32 pixelformat,
|
|
guint32 width, guint32 height, const GstStructure * template)
|
|
{
|
|
gint fd = v4l2object->video_fd;
|
|
struct v4l2_frmivalenum ival;
|
|
guint32 num, denom;
|
|
GstStructure *s;
|
|
GValue rates = { 0, };
|
|
|
|
memset (&ival, 0, sizeof (struct v4l2_frmivalenum));
|
|
ival.index = 0;
|
|
ival.pixel_format = pixelformat;
|
|
ival.width = width;
|
|
ival.height = height;
|
|
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj,
|
|
"get frame interval for %ux%u, %" GST_FOURCC_FORMAT, width, height,
|
|
GST_FOURCC_ARGS (pixelformat));
|
|
|
|
/* keep in mind that v4l2 gives us frame intervals (durations); we invert the
|
|
* fraction to get framerate */
|
|
if (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMEINTERVALS, &ival) < 0)
|
|
goto enum_frameintervals_failed;
|
|
|
|
if (ival.type == V4L2_FRMIVAL_TYPE_DISCRETE) {
|
|
GValue rate = { 0, };
|
|
|
|
g_value_init (&rates, GST_TYPE_LIST);
|
|
g_value_init (&rate, GST_TYPE_FRACTION);
|
|
|
|
do {
|
|
num = ival.discrete.numerator;
|
|
denom = ival.discrete.denominator;
|
|
|
|
if (num > G_MAXINT || denom > G_MAXINT) {
|
|
/* let us hope we don't get here... */
|
|
num >>= 1;
|
|
denom >>= 1;
|
|
}
|
|
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "adding discrete framerate: %d/%d",
|
|
denom, num);
|
|
|
|
/* swap to get the framerate */
|
|
gst_value_set_fraction (&rate, denom, num);
|
|
gst_value_list_append_value (&rates, &rate);
|
|
|
|
ival.index++;
|
|
} while (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMEINTERVALS, &ival) >= 0);
|
|
} else if (ival.type == V4L2_FRMIVAL_TYPE_STEPWISE) {
|
|
GValue min = { 0, };
|
|
GValue step = { 0, };
|
|
GValue max = { 0, };
|
|
gboolean added = FALSE;
|
|
guint32 minnum, mindenom;
|
|
guint32 maxnum, maxdenom;
|
|
|
|
g_value_init (&rates, GST_TYPE_LIST);
|
|
|
|
g_value_init (&min, GST_TYPE_FRACTION);
|
|
g_value_init (&step, GST_TYPE_FRACTION);
|
|
g_value_init (&max, GST_TYPE_FRACTION);
|
|
|
|
/* get the min */
|
|
minnum = ival.stepwise.min.numerator;
|
|
mindenom = ival.stepwise.min.denominator;
|
|
if (minnum > G_MAXINT || mindenom > G_MAXINT) {
|
|
minnum >>= 1;
|
|
mindenom >>= 1;
|
|
}
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise min frame interval: %d/%d",
|
|
minnum, mindenom);
|
|
gst_value_set_fraction (&min, minnum, mindenom);
|
|
|
|
/* get the max */
|
|
maxnum = ival.stepwise.max.numerator;
|
|
maxdenom = ival.stepwise.max.denominator;
|
|
if (maxnum > G_MAXINT || maxdenom > G_MAXINT) {
|
|
maxnum >>= 1;
|
|
maxdenom >>= 1;
|
|
}
|
|
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise max frame interval: %d/%d",
|
|
maxnum, maxdenom);
|
|
gst_value_set_fraction (&max, maxnum, maxdenom);
|
|
|
|
/* get the step */
|
|
num = ival.stepwise.step.numerator;
|
|
denom = ival.stepwise.step.denominator;
|
|
if (num > G_MAXINT || denom > G_MAXINT) {
|
|
num >>= 1;
|
|
denom >>= 1;
|
|
}
|
|
|
|
if (num == 0 || denom == 0) {
|
|
/* in this case we have a wrong fraction or no step, set the step to max
|
|
* so that we only add the min value in the loop below */
|
|
num = maxnum;
|
|
denom = maxdenom;
|
|
}
|
|
|
|
/* since we only have gst_value_fraction_subtract and not add, negate the
|
|
* numerator */
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise step frame interval: %d/%d",
|
|
num, denom);
|
|
gst_value_set_fraction (&step, -num, denom);
|
|
|
|
while (gst_value_compare (&min, &max) != GST_VALUE_GREATER_THAN) {
|
|
GValue rate = { 0, };
|
|
|
|
num = gst_value_get_fraction_numerator (&min);
|
|
denom = gst_value_get_fraction_denominator (&min);
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "adding stepwise framerate: %d/%d",
|
|
denom, num);
|
|
|
|
/* invert to get the framerate */
|
|
g_value_init (&rate, GST_TYPE_FRACTION);
|
|
gst_value_set_fraction (&rate, denom, num);
|
|
gst_value_list_append_value (&rates, &rate);
|
|
added = TRUE;
|
|
|
|
/* we're actually adding because step was negated above. This is because
|
|
* there is no _add function... */
|
|
if (!gst_value_fraction_subtract (&min, &min, &step)) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj, "could not step fraction!");
|
|
break;
|
|
}
|
|
}
|
|
if (!added) {
|
|
/* no range was added, leave the default range from the template */
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"no range added, leaving default");
|
|
g_value_unset (&rates);
|
|
}
|
|
} else if (ival.type == V4L2_FRMIVAL_TYPE_CONTINUOUS) {
|
|
guint32 maxnum, maxdenom;
|
|
|
|
g_value_init (&rates, GST_TYPE_FRACTION_RANGE);
|
|
|
|
num = ival.stepwise.min.numerator;
|
|
denom = ival.stepwise.min.denominator;
|
|
if (num > G_MAXINT || denom > G_MAXINT) {
|
|
num >>= 1;
|
|
denom >>= 1;
|
|
}
|
|
|
|
maxnum = ival.stepwise.max.numerator;
|
|
maxdenom = ival.stepwise.max.denominator;
|
|
if (maxnum > G_MAXINT || maxdenom > G_MAXINT) {
|
|
maxnum >>= 1;
|
|
maxdenom >>= 1;
|
|
}
|
|
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj,
|
|
"continuous frame interval %d/%d to %d/%d", maxdenom, maxnum, denom,
|
|
num);
|
|
|
|
gst_value_set_fraction_range_full (&rates, maxdenom, maxnum, denom, num);
|
|
} else {
|
|
goto unknown_type;
|
|
}
|
|
|
|
return_data:
|
|
s = gst_structure_copy (template);
|
|
gst_structure_set (s, "width", G_TYPE_INT, (gint) width,
|
|
"height", G_TYPE_INT, (gint) height, NULL);
|
|
|
|
gst_v4l2_object_add_aspect_ratio (v4l2object, s);
|
|
|
|
if (!v4l2object->skip_try_fmt_probes) {
|
|
gst_v4l2_object_add_interlace_mode (v4l2object, s, width, height,
|
|
pixelformat);
|
|
gst_v4l2_object_add_colorspace (v4l2object, s, width, height, pixelformat);
|
|
}
|
|
|
|
if (G_IS_VALUE (&rates)) {
|
|
gst_v4l2src_value_simplify (&rates);
|
|
/* only change the framerate on the template when we have a valid probed new
|
|
* value */
|
|
gst_structure_take_value (s, "framerate", &rates);
|
|
} else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
|
v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
|
|
gst_structure_set (s, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT,
|
|
1, NULL);
|
|
}
|
|
return s;
|
|
|
|
/* ERRORS */
|
|
enum_frameintervals_failed:
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Unable to enumerate intervals for %" GST_FOURCC_FORMAT "@%ux%u",
|
|
GST_FOURCC_ARGS (pixelformat), width, height);
|
|
goto return_data;
|
|
}
|
|
unknown_type:
|
|
{
|
|
/* I don't see how this is actually an error, we ignore the format then */
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Unknown frame interval type at %" GST_FOURCC_FORMAT "@%ux%u: %u",
|
|
GST_FOURCC_ARGS (pixelformat), width, height, ival.type);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static gint
|
|
sort_by_frame_size (GstStructure * s1, GstStructure * s2)
|
|
{
|
|
int w1, h1, w2, h2;
|
|
|
|
gst_structure_get_int (s1, "width", &w1);
|
|
gst_structure_get_int (s1, "height", &h1);
|
|
gst_structure_get_int (s2, "width", &w2);
|
|
gst_structure_get_int (s2, "height", &h2);
|
|
|
|
/* I think it's safe to assume that this won't overflow for a while */
|
|
return ((w2 * h2) - (w1 * h1));
|
|
}
|
|
|
|
static void
|
|
check_alternate_and_append_struct (GstCaps * caps, GstStructure * s)
|
|
{
|
|
const GValue *mode;
|
|
|
|
mode = gst_structure_get_value (s, "interlace-mode");
|
|
if (!mode)
|
|
goto done;
|
|
|
|
if (G_VALUE_HOLDS_STRING (mode)) {
|
|
/* Add the INTERLACED feature if the mode is alternate */
|
|
if (!g_strcmp0 (gst_structure_get_string (s, "interlace-mode"),
|
|
"alternate")) {
|
|
GstCapsFeatures *feat;
|
|
|
|
feat =
|
|
gst_caps_features_new_static_str (GST_CAPS_FEATURE_FORMAT_INTERLACED,
|
|
NULL);
|
|
gst_caps_set_features (caps, gst_caps_get_size (caps) - 1, feat);
|
|
}
|
|
} else if (GST_VALUE_HOLDS_LIST (mode)) {
|
|
/* If the mode is a list containing alternate, remove it from the list and add a
|
|
* variant with interlace-mode=alternate and the INTERLACED feature. */
|
|
GValue alter = G_VALUE_INIT;
|
|
GValue inter = G_VALUE_INIT;
|
|
|
|
g_value_init (&alter, G_TYPE_STRING);
|
|
g_value_set_string (&alter, "alternate");
|
|
|
|
/* Cannot use gst_value_can_intersect() as it requires args to have the
|
|
* same type. */
|
|
if (gst_value_intersect (&inter, mode, &alter)) {
|
|
GValue minus_alter = G_VALUE_INIT;
|
|
GstStructure *copy;
|
|
|
|
gst_value_subtract (&minus_alter, mode, &alter);
|
|
gst_structure_take_value (s, "interlace-mode", &minus_alter);
|
|
|
|
copy = gst_structure_copy (s);
|
|
gst_structure_take_value (copy, "interlace-mode", &inter);
|
|
gst_caps_append_structure_full (caps, copy,
|
|
gst_caps_features_new_static_str (GST_CAPS_FEATURE_FORMAT_INTERLACED,
|
|
NULL));
|
|
}
|
|
g_value_unset (&alter);
|
|
}
|
|
|
|
done:
|
|
gst_caps_append_structure (caps, s);
|
|
}
|
|
|
|
static void
|
|
gst_v4l2_object_update_and_append (GstV4l2Object * v4l2object,
|
|
guint32 format, GstCaps * caps, GstStructure * s)
|
|
{
|
|
GstStructure *alt_s = NULL;
|
|
|
|
/* Encoded stream on output buffer need to be parsed */
|
|
if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
|
|
v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
|
|
gint i = 0;
|
|
|
|
for (; i < GST_V4L2_FORMAT_COUNT; i++) {
|
|
if (format == gst_v4l2_formats[i].v4l2_format &&
|
|
gst_v4l2_formats[i].flags & GST_V4L2_CODEC &&
|
|
!(gst_v4l2_formats[i].flags & GST_V4L2_NO_PARSE)) {
|
|
gst_structure_set (s, "parsed", G_TYPE_BOOLEAN, TRUE, NULL);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (v4l2object->has_alpha_component &&
|
|
(v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
|
v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) {
|
|
switch (format) {
|
|
case V4L2_PIX_FMT_RGB32:
|
|
alt_s = gst_structure_copy (s);
|
|
gst_structure_set (alt_s, "format", G_TYPE_STRING, "ARGB", NULL);
|
|
break;
|
|
case V4L2_PIX_FMT_BGR32:
|
|
alt_s = gst_structure_copy (s);
|
|
gst_structure_set (alt_s, "format", G_TYPE_STRING, "BGRA", NULL);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
check_alternate_and_append_struct (caps, s);
|
|
|
|
if (alt_s) {
|
|
check_alternate_and_append_struct (caps, alt_s);
|
|
}
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_v4l2_object_probe_caps_for_format (GstV4l2Object * v4l2object,
|
|
guint32 pixelformat, const GstStructure * template)
|
|
{
|
|
GstCaps *ret = gst_caps_new_empty ();
|
|
GstStructure *tmp;
|
|
gint fd = v4l2object->video_fd;
|
|
struct v4l2_frmsizeenum size;
|
|
GList *results = NULL;
|
|
guint32 w, h;
|
|
|
|
if (pixelformat == GST_MAKE_FOURCC ('M', 'P', 'E', 'G')) {
|
|
gst_caps_append_structure (ret, gst_structure_copy (template));
|
|
return ret;
|
|
}
|
|
|
|
memset (&size, 0, sizeof (struct v4l2_frmsizeenum));
|
|
size.index = 0;
|
|
size.pixel_format = pixelformat;
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Enumerating frame sizes for %" GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (pixelformat));
|
|
|
|
if (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) < 0)
|
|
goto enum_framesizes_failed;
|
|
|
|
if (size.type == V4L2_FRMSIZE_TYPE_DISCRETE) {
|
|
guint32 maxw = 0, maxh = 0;
|
|
|
|
do {
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "got discrete frame size %dx%d",
|
|
size.discrete.width, size.discrete.height);
|
|
|
|
w = MIN (size.discrete.width, G_MAXINT);
|
|
h = MIN (size.discrete.height, G_MAXINT);
|
|
|
|
if (w && h) {
|
|
tmp =
|
|
gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
|
|
pixelformat, w, h, template);
|
|
|
|
if (tmp)
|
|
results = g_list_prepend (results, tmp);
|
|
}
|
|
|
|
if (w > maxw && h > maxh) {
|
|
maxw = w;
|
|
maxh = h;
|
|
}
|
|
|
|
size.index++;
|
|
} while (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) >= 0);
|
|
|
|
v4l2object->max_width = maxw;
|
|
v4l2object->max_height = maxh;
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"done iterating discrete frame sizes");
|
|
} else if (size.type == V4L2_FRMSIZE_TYPE_STEPWISE) {
|
|
guint32 maxw, maxh, step_w, step_h;
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "we have stepwise frame sizes:");
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min width: %d",
|
|
size.stepwise.min_width);
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
|
|
size.stepwise.min_height);
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "max width: %d",
|
|
size.stepwise.max_width);
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "max height: %d",
|
|
size.stepwise.max_height);
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "step width: %d",
|
|
size.stepwise.step_width);
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "step height: %d",
|
|
size.stepwise.step_height);
|
|
|
|
step_w = MAX (size.stepwise.step_width, 1);
|
|
step_h = MAX (size.stepwise.step_height, 1);
|
|
w = MAX (size.stepwise.min_width, step_w);
|
|
h = MAX (size.stepwise.min_height, step_h);
|
|
maxw = MIN (size.stepwise.max_width, G_MAXINT);
|
|
maxh = MIN (size.stepwise.max_height, G_MAXINT);
|
|
|
|
/* ensure maxes are multiples of the steps */
|
|
maxw -= maxw % step_w;
|
|
maxh -= maxh % step_h;
|
|
|
|
/* FIXME: check for sanity */
|
|
|
|
/* we only query details for the min width/height in order to allow for
|
|
a big range of frameintervals.
|
|
The correct max framerate is tested later for the negotiated size */
|
|
tmp = gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
|
|
pixelformat, w, h, template);
|
|
|
|
if (tmp) {
|
|
GValue step_range = G_VALUE_INIT;
|
|
|
|
g_value_init (&step_range, GST_TYPE_INT_RANGE);
|
|
gst_value_set_int_range_step (&step_range, w, maxw, step_w);
|
|
gst_structure_set_value (tmp, "width", &step_range);
|
|
|
|
gst_value_set_int_range_step (&step_range, h, maxh, step_h);
|
|
gst_structure_take_value (tmp, "height", &step_range);
|
|
|
|
/* no point using the results list here, since there's only one struct */
|
|
gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
|
|
|
|
v4l2object->max_width = maxw;
|
|
v4l2object->max_height = maxh;
|
|
}
|
|
} else if (size.type == V4L2_FRMSIZE_TYPE_CONTINUOUS) {
|
|
guint32 maxw, maxh;
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "we have continuous frame sizes:");
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min width: %d",
|
|
size.stepwise.min_width);
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
|
|
size.stepwise.min_height);
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "max width: %d",
|
|
size.stepwise.max_width);
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
|
|
size.stepwise.max_height);
|
|
|
|
w = MAX (size.stepwise.min_width, 1);
|
|
h = MAX (size.stepwise.min_height, 1);
|
|
maxw = MIN (size.stepwise.max_width, G_MAXINT);
|
|
maxh = MIN (size.stepwise.max_height, G_MAXINT);
|
|
|
|
tmp =
|
|
gst_v4l2_object_probe_caps_for_format_and_size (v4l2object, pixelformat,
|
|
w, h, template);
|
|
if (tmp) {
|
|
gst_structure_set (tmp, "width", GST_TYPE_INT_RANGE, (gint) w,
|
|
(gint) maxw, "height", GST_TYPE_INT_RANGE, (gint) h, (gint) maxh,
|
|
NULL);
|
|
|
|
/* no point using the results list here, since there's only one struct */
|
|
gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
|
|
|
|
v4l2object->max_width = maxw;
|
|
v4l2object->max_height = maxh;
|
|
}
|
|
} else {
|
|
goto unknown_type;
|
|
}
|
|
|
|
/* we use an intermediary list to store and then sort the results of the
|
|
* probing because we can't make any assumptions about the order in which
|
|
* the driver will give us the sizes, but we want the final caps to contain
|
|
* the results starting with the highest resolution and having the lowest
|
|
* resolution last, since order in caps matters for things like fixation. */
|
|
results = g_list_sort (results, (GCompareFunc) sort_by_frame_size);
|
|
while (results != NULL) {
|
|
gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret,
|
|
results->data);
|
|
results = g_list_delete_link (results, results);
|
|
}
|
|
|
|
if (gst_caps_is_empty (ret))
|
|
goto enum_framesizes_no_results;
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
enum_framesizes_failed:
|
|
{
|
|
/* I don't see how this is actually an error */
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Failed to enumerate frame sizes for pixelformat %" GST_FOURCC_FORMAT
|
|
" (%s)", GST_FOURCC_ARGS (pixelformat), g_strerror (errno));
|
|
goto default_frame_sizes;
|
|
}
|
|
enum_framesizes_no_results:
|
|
{
|
|
/* it's possible that VIDIOC_ENUM_FRAMESIZES is defined but the driver in
|
|
* question doesn't actually support it yet */
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"No results for pixelformat %" GST_FOURCC_FORMAT
|
|
" enumerating frame sizes, trying fallback",
|
|
GST_FOURCC_ARGS (pixelformat));
|
|
goto default_frame_sizes;
|
|
}
|
|
unknown_type:
|
|
{
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Unknown frame sizeenum type for pixelformat %" GST_FOURCC_FORMAT
|
|
": %u", GST_FOURCC_ARGS (pixelformat), size.type);
|
|
goto default_frame_sizes;
|
|
}
|
|
|
|
default_frame_sizes:
|
|
{
|
|
gint min_w, max_w, min_h, max_h, fix_num = 0, fix_denom = 0;
|
|
|
|
/* This code is for Linux < 2.6.19 */
|
|
min_w = min_h = 1;
|
|
max_w = max_h = GST_V4L2_MAX_SIZE;
|
|
if (!gst_v4l2_object_get_nearest_size (v4l2object, pixelformat, &min_w,
|
|
&min_h)) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Could not probe minimum capture size for pixelformat %"
|
|
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (pixelformat));
|
|
}
|
|
if (!gst_v4l2_object_get_nearest_size (v4l2object, pixelformat, &max_w,
|
|
&max_h)) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Could not probe maximum capture size for pixelformat %"
|
|
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (pixelformat));
|
|
}
|
|
if (min_w == 0 || min_h == 0)
|
|
min_w = min_h = 1;
|
|
if (max_w == 0 || max_h == 0)
|
|
max_w = max_h = GST_V4L2_MAX_SIZE;
|
|
v4l2object->max_width = max_w;
|
|
v4l2object->max_height = max_h;
|
|
|
|
/* Since we can't get framerate directly, try to use the current norm */
|
|
if (v4l2object->tv_norm && v4l2object->norms) {
|
|
GList *norms;
|
|
GstTunerNorm *norm = NULL;
|
|
GstTunerNorm *current =
|
|
gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
|
|
|
|
for (norms = v4l2object->norms; norms != NULL; norms = norms->next) {
|
|
norm = (GstTunerNorm *) norms->data;
|
|
if (!strcmp (norm->label, current->label))
|
|
break;
|
|
}
|
|
/* If it's possible, set framerate to that (discrete) value */
|
|
if (norm) {
|
|
fix_num = gst_value_get_fraction_numerator (&norm->framerate);
|
|
fix_denom = gst_value_get_fraction_denominator (&norm->framerate);
|
|
}
|
|
}
|
|
|
|
tmp = gst_structure_copy (template);
|
|
if (fix_num) {
|
|
gst_structure_set (tmp, "framerate", GST_TYPE_FRACTION, fix_num,
|
|
fix_denom, NULL);
|
|
} else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
|
v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
|
|
/* if norm can't be used, copy the template framerate */
|
|
gst_structure_set (tmp, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1,
|
|
G_MAXINT, 1, NULL);
|
|
}
|
|
|
|
if (min_w == max_w)
|
|
gst_structure_set (tmp, "width", G_TYPE_INT, max_w, NULL);
|
|
else
|
|
gst_structure_set (tmp, "width", GST_TYPE_INT_RANGE, min_w, max_w, NULL);
|
|
|
|
if (min_h == max_h)
|
|
gst_structure_set (tmp, "height", G_TYPE_INT, max_h, NULL);
|
|
else
|
|
gst_structure_set (tmp, "height", GST_TYPE_INT_RANGE, min_h, max_h, NULL);
|
|
|
|
gst_v4l2_object_add_aspect_ratio (v4l2object, tmp);
|
|
|
|
/* We could consider setting interlace mode from min and max. */
|
|
gst_v4l2_object_add_interlace_mode (v4l2object, tmp, max_w, max_h,
|
|
pixelformat);
|
|
|
|
if (!v4l2object->skip_try_fmt_probes) {
|
|
gint probed_w, probed_h;
|
|
if (v4l2object->info.width >= min_w && v4l2object->info.width <= max_w &&
|
|
v4l2object->info.height >= min_h
|
|
&& v4l2object->info.height <= max_h) {
|
|
probed_w = v4l2object->info.width;
|
|
probed_h = v4l2object->info.height;
|
|
} else {
|
|
probed_w = max_w;
|
|
probed_h = max_h;
|
|
}
|
|
/* We could consider to check colorspace for min too, in case it depends on
|
|
* the size. But in this case, min and max could not be enough */
|
|
gst_v4l2_object_add_colorspace (v4l2object, tmp, probed_w, probed_h,
|
|
pixelformat);
|
|
}
|
|
|
|
gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_get_nearest_size (GstV4l2Object * v4l2object,
|
|
guint32 pixelformat, gint * width, gint * height)
|
|
{
|
|
struct v4l2_format fmt;
|
|
gboolean ret = FALSE;
|
|
GstVideoInterlaceMode interlace_mode;
|
|
|
|
g_return_val_if_fail (width != NULL, FALSE);
|
|
g_return_val_if_fail (height != NULL, FALSE);
|
|
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj,
|
|
"getting nearest size to %dx%d with format %" GST_FOURCC_FORMAT,
|
|
*width, *height, GST_FOURCC_ARGS (pixelformat));
|
|
|
|
memset (&fmt, 0, sizeof (struct v4l2_format));
|
|
|
|
/* get size delimiters */
|
|
memset (&fmt, 0, sizeof (fmt));
|
|
fmt.type = v4l2object->type;
|
|
fmt.fmt.pix.width = *width;
|
|
fmt.fmt.pix.height = *height;
|
|
fmt.fmt.pix.pixelformat = pixelformat;
|
|
fmt.fmt.pix.field = V4L2_FIELD_ANY;
|
|
|
|
if (gst_v4l2_object_try_fmt (v4l2object, &fmt) < 0)
|
|
goto error;
|
|
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj,
|
|
"got nearest size %dx%d", fmt.fmt.pix.width, fmt.fmt.pix.height);
|
|
|
|
*width = fmt.fmt.pix.width;
|
|
*height = fmt.fmt.pix.height;
|
|
|
|
if (!gst_v4l2_object_get_interlace_mode (fmt.fmt.pix.field, &interlace_mode)) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Unsupported field type for %" GST_FOURCC_FORMAT "@%ux%u: %u",
|
|
GST_FOURCC_ARGS (pixelformat), *width, *height, fmt.fmt.pix.field);
|
|
goto error;
|
|
}
|
|
|
|
ret = TRUE;
|
|
|
|
error:
|
|
if (!ret) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Unable to try format: %s", g_strerror (errno));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_is_dmabuf_supported (GstV4l2Object * v4l2object)
|
|
{
|
|
gboolean ret = TRUE;
|
|
struct v4l2_exportbuffer expbuf = {
|
|
.type = v4l2object->type,
|
|
.index = -1,
|
|
.plane = -1,
|
|
.flags = O_CLOEXEC | O_RDWR,
|
|
};
|
|
|
|
if (v4l2object->fmtdesc &&
|
|
v4l2object->fmtdesc->flags & V4L2_FMT_FLAG_EMULATED) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"libv4l2 converter detected, disabling DMABuf");
|
|
ret = FALSE;
|
|
}
|
|
|
|
/* Expected to fail, but ENOTTY tells us that it is not implemented. */
|
|
v4l2object->ioctl (v4l2object->video_fd, VIDIOC_EXPBUF, &expbuf);
|
|
if (errno == ENOTTY)
|
|
ret = FALSE;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_setup_pool (GstV4l2Object * v4l2object, GstCaps * caps)
|
|
{
|
|
GstV4l2IOMode mode;
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "initializing the %s system",
|
|
V4L2_TYPE_IS_OUTPUT (v4l2object->type) ? "output" : "capture");
|
|
|
|
GST_V4L2_CHECK_OPEN (v4l2object);
|
|
GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
|
|
|
|
/* find transport */
|
|
mode = v4l2object->req_mode;
|
|
|
|
if (v4l2object->device_caps & V4L2_CAP_READWRITE) {
|
|
if (v4l2object->req_mode == GST_V4L2_IO_AUTO)
|
|
mode = GST_V4L2_IO_RW;
|
|
} else if (v4l2object->req_mode == GST_V4L2_IO_RW)
|
|
goto method_not_supported;
|
|
|
|
if (v4l2object->device_caps & V4L2_CAP_STREAMING) {
|
|
if (v4l2object->req_mode == GST_V4L2_IO_AUTO) {
|
|
if (!V4L2_TYPE_IS_OUTPUT (v4l2object->type) &&
|
|
gst_v4l2_object_is_dmabuf_supported (v4l2object)) {
|
|
mode = GST_V4L2_IO_DMABUF;
|
|
} else {
|
|
mode = GST_V4L2_IO_MMAP;
|
|
}
|
|
}
|
|
} else if (v4l2object->req_mode == GST_V4L2_IO_MMAP ||
|
|
v4l2object->req_mode == GST_V4L2_IO_DMABUF)
|
|
goto method_not_supported;
|
|
|
|
/* if still no transport selected, error out */
|
|
if (mode == GST_V4L2_IO_AUTO)
|
|
goto no_supported_capture_method;
|
|
|
|
GST_INFO_OBJECT (v4l2object->dbg_obj, "accessing buffers via mode %d", mode);
|
|
v4l2object->mode = mode;
|
|
|
|
/* If min_buffers is not set, the driver either does not support the control or
|
|
it has not been asked yet via propose_allocation/decide_allocation. */
|
|
if (!v4l2object->min_buffers)
|
|
gst_v4l2_get_driver_min_buffers (v4l2object);
|
|
|
|
/* Map the buffers */
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "initiating buffer pool");
|
|
|
|
{
|
|
GstBufferPool *pool = gst_v4l2_buffer_pool_new (v4l2object, caps);
|
|
GST_OBJECT_LOCK (v4l2object->element);
|
|
v4l2object->pool = pool;
|
|
GST_OBJECT_UNLOCK (v4l2object->element);
|
|
if (!pool)
|
|
goto buffer_pool_new_failed;
|
|
}
|
|
|
|
GST_V4L2_SET_ACTIVE (v4l2object);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
buffer_pool_new_failed:
|
|
{
|
|
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
|
|
(_("Could not map buffers from device '%s'"),
|
|
v4l2object->videodev),
|
|
("Failed to create buffer pool: %s", g_strerror (errno)));
|
|
return FALSE;
|
|
}
|
|
method_not_supported:
|
|
{
|
|
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
|
|
(_("The driver of device '%s' does not support the IO method %d"),
|
|
v4l2object->videodev, mode), (NULL));
|
|
return FALSE;
|
|
}
|
|
no_supported_capture_method:
|
|
{
|
|
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
|
|
(_("The driver of device '%s' does not support any known IO "
|
|
"method."), v4l2object->videodev), (NULL));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_reset_compose_region (GstV4l2Object * obj)
|
|
{
|
|
struct v4l2_selection sel = { 0 };
|
|
|
|
GST_V4L2_CHECK_OPEN (obj);
|
|
|
|
sel.type = obj->type;
|
|
sel.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
|
|
|
|
if (obj->ioctl (obj->video_fd, VIDIOC_G_SELECTION, &sel) < 0) {
|
|
if (errno == ENOTTY) {
|
|
/* No-op when selection API is not supported */
|
|
return TRUE;
|
|
} else {
|
|
GST_WARNING_OBJECT (obj->dbg_obj,
|
|
"Failed to get default compose rectangle with VIDIOC_G_SELECTION: %s",
|
|
g_strerror (errno));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
sel.target = V4L2_SEL_TGT_COMPOSE;
|
|
|
|
if (obj->ioctl (obj->video_fd, VIDIOC_S_SELECTION, &sel) < 0) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj,
|
|
"Failed to set default compose rectangle with VIDIOC_S_SELECTION: %s",
|
|
g_strerror (errno));
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_v4l2_object_set_stride (GstVideoInfo * info, GstVideoAlignment * align,
|
|
gint plane, gint stride)
|
|
{
|
|
const GstVideoFormatInfo *finfo = info->finfo;
|
|
|
|
if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
|
|
gint x_tiles, y_tiles, tile_height, padded_height;
|
|
|
|
tile_height = GST_VIDEO_FORMAT_INFO_TILE_HEIGHT (finfo, plane);
|
|
|
|
padded_height = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, plane,
|
|
info->height + align->padding_top + align->padding_bottom);
|
|
|
|
x_tiles = stride / GST_VIDEO_FORMAT_INFO_TILE_STRIDE (finfo, plane);
|
|
y_tiles = (padded_height + tile_height - 1) / tile_height;
|
|
info->stride[plane] = GST_VIDEO_TILE_MAKE_STRIDE (x_tiles, y_tiles);
|
|
} else {
|
|
info->stride[plane] = stride;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_v4l2_object_extrapolate_info (GstV4l2Object * v4l2object,
|
|
GstVideoInfo * info, GstVideoAlignment * align, gint stride)
|
|
{
|
|
const GstVideoFormatInfo *finfo = info->finfo;
|
|
gint i, estride, padded_height;
|
|
gsize offs = 0;
|
|
|
|
g_return_if_fail (v4l2object->n_v4l2_planes == 1);
|
|
|
|
padded_height =
|
|
GST_VIDEO_INFO_FIELD_HEIGHT (info) + align->padding_top +
|
|
align->padding_bottom;
|
|
|
|
for (i = 0; i < finfo->n_planes; i++) {
|
|
estride = gst_video_format_info_extrapolate_stride (finfo, i, stride);
|
|
|
|
gst_v4l2_object_set_stride (info, align, i, estride);
|
|
|
|
info->offset[i] = offs;
|
|
offs += estride *
|
|
GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, padded_height);
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Extrapolated for plane %d with base stride %d: "
|
|
"stride %d, offset %" G_GSIZE_FORMAT, i, stride, info->stride[i],
|
|
info->offset[i]);
|
|
}
|
|
|
|
/* Update the image size according the amount of data we are going to
|
|
* read/write. This workaround bugs in driver where the sizeimage provided
|
|
* by TRY/S_FMT represent the buffer length (maximum size) rather then the expected
|
|
* bytesused (buffer size). */
|
|
if (offs < info->size)
|
|
info->size = offs;
|
|
}
|
|
|
|
static void
|
|
gst_v4l2_object_save_format (GstV4l2Object * v4l2object,
|
|
struct v4l2_fmtdesc *fmtdesc, struct v4l2_format *format,
|
|
GstVideoInfo * info, GstVideoAlignment * align)
|
|
{
|
|
const GstVideoFormatInfo *finfo = info->finfo;
|
|
gboolean standard_stride = TRUE;
|
|
gint stride, pstride, padded_width, padded_height, i;
|
|
|
|
if (GST_VIDEO_INFO_FORMAT (info) == GST_VIDEO_FORMAT_ENCODED) {
|
|
v4l2object->n_v4l2_planes = 1;
|
|
info->size = format->fmt.pix.sizeimage;
|
|
goto store_info;
|
|
}
|
|
|
|
/* adjust right padding */
|
|
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
|
|
stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
|
|
else
|
|
stride = format->fmt.pix.bytesperline;
|
|
|
|
pstride = GST_VIDEO_FORMAT_INFO_PSTRIDE (finfo, 0);
|
|
if (pstride) {
|
|
padded_width = stride / pstride;
|
|
} else {
|
|
/* pstride can be 0 for complex formats */
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"format %s has a pstride of 0, cannot compute padded with",
|
|
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (info)));
|
|
padded_width = format->fmt.pix.width;
|
|
}
|
|
|
|
if (padded_width < format->fmt.pix.width)
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Driver bug detected, stride (%d) is too small for the width (%d)",
|
|
padded_width, format->fmt.pix.width);
|
|
|
|
align->padding_right = padded_width - info->width - align->padding_left;
|
|
|
|
/* adjust bottom padding */
|
|
padded_height = format->fmt.pix.height;
|
|
|
|
if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
|
|
guint tile_height;
|
|
tile_height = GST_VIDEO_FORMAT_INFO_TILE_HEIGHT (finfo, 0);
|
|
/* Round-up to tile_height as drivers are not forced to do so */
|
|
padded_height =
|
|
(padded_height + tile_height - 1) / tile_height * tile_height;
|
|
}
|
|
|
|
align->padding_bottom =
|
|
padded_height - GST_VIDEO_INFO_FIELD_HEIGHT (info) - align->padding_top;
|
|
|
|
/* setup the strides and offset */
|
|
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type)) {
|
|
struct v4l2_pix_format_mplane *pix_mp = &format->fmt.pix_mp;
|
|
|
|
/* figure out the frame layout */
|
|
v4l2object->n_v4l2_planes = MAX (1, pix_mp->num_planes);
|
|
info->size = 0;
|
|
for (i = 0; i < v4l2object->n_v4l2_planes; i++) {
|
|
stride = pix_mp->plane_fmt[i].bytesperline;
|
|
|
|
if (info->stride[i] != stride)
|
|
standard_stride = FALSE;
|
|
|
|
gst_v4l2_object_set_stride (info, align, i, stride);
|
|
info->offset[i] = info->size;
|
|
info->size += pix_mp->plane_fmt[i].sizeimage;
|
|
}
|
|
|
|
/* Extrapolate stride if planar format are being set in 1 v4l2 plane */
|
|
if (v4l2object->n_v4l2_planes < finfo->n_planes) {
|
|
stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
|
|
gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
|
|
}
|
|
} else {
|
|
/* only one plane in non-MPLANE mode */
|
|
v4l2object->n_v4l2_planes = 1;
|
|
info->size = format->fmt.pix.sizeimage;
|
|
stride = format->fmt.pix.bytesperline;
|
|
|
|
if (info->stride[0] != stride)
|
|
standard_stride = FALSE;
|
|
|
|
gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
|
|
}
|
|
|
|
/* adjust the offset to take into account left and top */
|
|
if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
|
|
if ((align->padding_left + align->padding_top) > 0)
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Left and top padding is not permitted for tiled formats");
|
|
memset (v4l2object->plane_size, 0, sizeof (v4l2object->plane_size));
|
|
} else {
|
|
if (!gst_video_info_align_full (info, align, v4l2object->plane_size)) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj, "Failed to align video info");
|
|
}
|
|
}
|
|
|
|
store_info:
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got sizeimage %" G_GSIZE_FORMAT,
|
|
info->size);
|
|
|
|
/* to avoid copies we need video meta if there is padding */
|
|
v4l2object->need_video_meta =
|
|
((align->padding_top + align->padding_left + align->padding_right +
|
|
align->padding_bottom) != 0);
|
|
|
|
/* ... or if stride is non "standard" */
|
|
if (!standard_stride)
|
|
v4l2object->need_video_meta = TRUE;
|
|
|
|
/* ... or also video meta if we use multiple, non-contiguous, planes */
|
|
if (v4l2object->n_v4l2_planes > 1)
|
|
v4l2object->need_video_meta = TRUE;
|
|
|
|
v4l2object->info = *info;
|
|
v4l2object->align = *align;
|
|
v4l2object->format = *format;
|
|
v4l2object->fmtdesc = fmtdesc;
|
|
|
|
/* if we have a framerate pre-calculate duration */
|
|
if (info->fps_n > 0 && info->fps_d > 0) {
|
|
v4l2object->duration = gst_util_uint64_scale_int (GST_SECOND, info->fps_d,
|
|
info->fps_n);
|
|
if (GST_VIDEO_INFO_INTERLACE_MODE (info) ==
|
|
GST_VIDEO_INTERLACE_MODE_ALTERNATE)
|
|
v4l2object->duration /= 2;
|
|
} else {
|
|
v4l2object->duration = GST_CLOCK_TIME_NONE;
|
|
}
|
|
}
|
|
|
|
static enum v4l2_field
|
|
get_v4l2_field_for_info (GstVideoInfo * info)
|
|
{
|
|
if (!GST_VIDEO_INFO_IS_INTERLACED (info))
|
|
return V4L2_FIELD_NONE;
|
|
|
|
if (GST_VIDEO_INFO_INTERLACE_MODE (info) ==
|
|
GST_VIDEO_INTERLACE_MODE_ALTERNATE)
|
|
return V4L2_FIELD_ALTERNATE;
|
|
|
|
switch (GST_VIDEO_INFO_FIELD_ORDER (info)) {
|
|
case GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST:
|
|
return V4L2_FIELD_INTERLACED_TB;
|
|
case GST_VIDEO_FIELD_ORDER_BOTTOM_FIELD_FIRST:
|
|
return V4L2_FIELD_INTERLACED_BT;
|
|
case GST_VIDEO_FIELD_ORDER_UNKNOWN:
|
|
default:
|
|
return V4L2_FIELD_INTERLACED;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_video_colorimetry_matches (const GstVideoColorimetry * cinfo,
|
|
GstCaps * caps)
|
|
{
|
|
GstVideoInfo info;
|
|
static const GstVideoColorimetry ci_likely_jpeg = {
|
|
GST_VIDEO_COLOR_RANGE_0_255, GST_VIDEO_COLOR_MATRIX_BT601,
|
|
GST_VIDEO_TRANSFER_UNKNOWN, GST_VIDEO_COLOR_PRIMARIES_UNKNOWN
|
|
};
|
|
static const GstVideoColorimetry ci_jpeg = {
|
|
GST_VIDEO_COLOR_RANGE_0_255, GST_VIDEO_COLOR_MATRIX_BT601,
|
|
GST_VIDEO_TRANSFER_SRGB, GST_VIDEO_COLOR_PRIMARIES_BT709
|
|
};
|
|
|
|
if (!gst_video_info_from_caps (&info, caps))
|
|
return FALSE;
|
|
|
|
/* if colorimetry in caps is unknown, use the default one */
|
|
if (info.colorimetry.primaries == GST_VIDEO_COLOR_PRIMARIES_UNKNOWN)
|
|
info.colorimetry.primaries = cinfo->primaries;
|
|
if (info.colorimetry.range == GST_VIDEO_COLOR_RANGE_UNKNOWN)
|
|
info.colorimetry.range = cinfo->range;
|
|
if (info.colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_UNKNOWN)
|
|
info.colorimetry.matrix = cinfo->matrix;
|
|
if (info.colorimetry.transfer == GST_VIDEO_TRANSFER_UNKNOWN)
|
|
info.colorimetry.transfer = cinfo->transfer;
|
|
|
|
if (gst_video_colorimetry_is_equal (&info.colorimetry, cinfo))
|
|
return TRUE;
|
|
|
|
/* Allow 1:4:0:0 (produced by jpegdec) if the device expects 1:4:7:1 */
|
|
if (gst_video_colorimetry_is_equal (&info.colorimetry, &ci_likely_jpeg)
|
|
&& gst_video_colorimetry_is_equal (cinfo, &ci_jpeg))
|
|
return TRUE;
|
|
|
|
/* bypass check the below GST_VIDEO_TRANSFER_ARIB_STD_B67 type,
|
|
* because kernel do not support it. GST_VIDEO_TRANSFER_ARIB_STD_B67 is cast
|
|
* to GST_VIDEO_TRANSFER_BT2020_12 type in gst_v4l2_object_get_colorspace */
|
|
if (info.colorimetry.transfer == GST_VIDEO_TRANSFER_ARIB_STD_B67) {
|
|
info.colorimetry.transfer = cinfo->transfer;
|
|
GST_WARNING
|
|
("v4l2 framework do not support GST_VIDEO_TRANSFER_ARIB_STD_B67");
|
|
|
|
if (gst_video_colorimetry_is_equal (&info.colorimetry, cinfo))
|
|
return TRUE;
|
|
}
|
|
|
|
/* bypass check the below transfer types, because those types are cast to
|
|
* V4L2_XFER_FUNC_NONE type when try format or set format and V4L2_XFER_FUNC_NONE
|
|
* type is cast to GST_VIDEO_TRANSFER_GAMMA10 type in gst_v4l2_object_get_colorspace */
|
|
if ((info.colorimetry.transfer == GST_VIDEO_TRANSFER_GAMMA18) ||
|
|
(info.colorimetry.transfer == GST_VIDEO_TRANSFER_GAMMA20) ||
|
|
(info.colorimetry.transfer == GST_VIDEO_TRANSFER_GAMMA22) ||
|
|
(info.colorimetry.transfer == GST_VIDEO_TRANSFER_GAMMA28)) {
|
|
info.colorimetry.transfer = GST_VIDEO_TRANSFER_GAMMA10;
|
|
if (gst_video_colorimetry_is_equal (&info.colorimetry, cinfo))
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static const gchar *
|
|
field_to_str (enum v4l2_field f)
|
|
{
|
|
switch (f) {
|
|
case V4L2_FIELD_ANY:
|
|
return "any";
|
|
case V4L2_FIELD_NONE:
|
|
return "none";
|
|
case V4L2_FIELD_TOP:
|
|
return "top";
|
|
case V4L2_FIELD_BOTTOM:
|
|
return "bottom";
|
|
case V4L2_FIELD_INTERLACED:
|
|
return "interlaced";
|
|
case V4L2_FIELD_SEQ_TB:
|
|
return "seq-tb";
|
|
case V4L2_FIELD_SEQ_BT:
|
|
return "seq-bt";
|
|
case V4L2_FIELD_ALTERNATE:
|
|
return "alternate";
|
|
case V4L2_FIELD_INTERLACED_TB:
|
|
return "interlaced-tb";
|
|
case V4L2_FIELD_INTERLACED_BT:
|
|
return "interlaced-bt";
|
|
}
|
|
|
|
return "unknown";
|
|
}
|
|
|
|
static guint
|
|
calculate_max_sizeimage (GstV4l2Object * v4l2object, guint pixel_bitdepth)
|
|
{
|
|
guint max_width, max_height;
|
|
guint sizeimage;
|
|
|
|
max_width = v4l2object->max_width;
|
|
max_height = v4l2object->max_height;
|
|
sizeimage = max_width * max_height * pixel_bitdepth / 8 / 2;
|
|
|
|
return MAX (ENCODED_BUFFER_MIN_SIZE, sizeimage);
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_set_format_full (GstV4l2Object * v4l2object, GstCaps * caps,
|
|
gboolean try_only, GstV4l2Error * error)
|
|
{
|
|
gint fd = v4l2object->video_fd;
|
|
struct v4l2_format format;
|
|
struct v4l2_streamparm streamparm;
|
|
enum v4l2_field field;
|
|
guint32 pixelformat;
|
|
struct v4l2_fmtdesc *fmtdesc;
|
|
GstVideoInfo info;
|
|
GstVideoAlignment align;
|
|
gint width, height, fps_n, fps_d;
|
|
guint pixel_bitdepth = 8;
|
|
gint n_v4l_planes;
|
|
gint i = 0;
|
|
gboolean is_mplane;
|
|
enum v4l2_colorspace colorspace = 0;
|
|
enum v4l2_quantization range = 0;
|
|
enum v4l2_ycbcr_encoding matrix = 0;
|
|
enum v4l2_xfer_func transfer = 0;
|
|
GstStructure *s;
|
|
gboolean disable_interlacing = FALSE;
|
|
gboolean disable_colorimetry = FALSE;
|
|
|
|
g_return_val_if_fail (!v4l2object->skip_try_fmt_probes ||
|
|
gst_caps_is_writable (caps), FALSE);
|
|
|
|
GST_V4L2_CHECK_OPEN (v4l2object);
|
|
if (!try_only)
|
|
GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
|
|
|
|
is_mplane = V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type);
|
|
|
|
gst_video_info_init (&info);
|
|
gst_video_alignment_reset (&align);
|
|
v4l2object->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
|
|
v4l2object->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
|
|
|
|
if (!gst_v4l2_object_get_caps_info (v4l2object, caps, &fmtdesc, &info))
|
|
goto invalid_caps;
|
|
|
|
pixelformat = fmtdesc->pixelformat;
|
|
width = GST_VIDEO_INFO_WIDTH (&info);
|
|
height = GST_VIDEO_INFO_FIELD_HEIGHT (&info);
|
|
/* if caps has no width and height info, use default value */
|
|
if (V4L2_TYPE_IS_OUTPUT (v4l2object->type) && width == 0 && height == 0) {
|
|
width = GST_V4L2_DEFAULT_WIDTH;
|
|
height = GST_V4L2_DEFAULT_HEIGHT;
|
|
}
|
|
fps_n = GST_VIDEO_INFO_FPS_N (&info);
|
|
fps_d = GST_VIDEO_INFO_FPS_D (&info);
|
|
|
|
/* if encoded format (GST_VIDEO_INFO_N_PLANES return 0)
|
|
* or if contiguous is preferred */
|
|
n_v4l_planes = GST_VIDEO_INFO_N_PLANES (&info);
|
|
if (!n_v4l_planes || !v4l2object->prefered_non_contiguous)
|
|
n_v4l_planes = 1;
|
|
|
|
field = get_v4l2_field_for_info (&info);
|
|
if (field != V4L2_FIELD_NONE)
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "interlaced video");
|
|
else
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "progressive video");
|
|
|
|
/* We first pick the main colorspace from the primaries */
|
|
switch (info.colorimetry.primaries) {
|
|
case GST_VIDEO_COLOR_PRIMARIES_BT709:
|
|
/* There is three colorspaces using these primaries, use the range
|
|
* and format type to differentiate them */
|
|
if (info.colorimetry.range == GST_VIDEO_COLOR_RANGE_16_235) {
|
|
if (GST_VIDEO_INFO_IS_RGB (&info))
|
|
colorspace = V4L2_COLORSPACE_SRGB;
|
|
else
|
|
colorspace = V4L2_COLORSPACE_REC709;
|
|
} else {
|
|
colorspace = V4L2_COLORSPACE_JPEG;
|
|
}
|
|
break;
|
|
case GST_VIDEO_COLOR_PRIMARIES_BT2020:
|
|
colorspace = V4L2_COLORSPACE_BT2020;
|
|
break;
|
|
case GST_VIDEO_COLOR_PRIMARIES_BT470M:
|
|
colorspace = V4L2_COLORSPACE_470_SYSTEM_M;
|
|
break;
|
|
case GST_VIDEO_COLOR_PRIMARIES_BT470BG:
|
|
colorspace = V4L2_COLORSPACE_470_SYSTEM_BG;
|
|
break;
|
|
case GST_VIDEO_COLOR_PRIMARIES_SMPTE170M:
|
|
colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
break;
|
|
case GST_VIDEO_COLOR_PRIMARIES_SMPTE240M:
|
|
colorspace = V4L2_COLORSPACE_SMPTE240M;
|
|
break;
|
|
|
|
case GST_VIDEO_COLOR_PRIMARIES_FILM:
|
|
case GST_VIDEO_COLOR_PRIMARIES_UNKNOWN:
|
|
/* We don't know, we will guess */
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Unknown colorimetry primaries %d", info.colorimetry.primaries);
|
|
break;
|
|
}
|
|
|
|
switch (info.colorimetry.range) {
|
|
case GST_VIDEO_COLOR_RANGE_0_255:
|
|
range = V4L2_QUANTIZATION_FULL_RANGE;
|
|
break;
|
|
case GST_VIDEO_COLOR_RANGE_16_235:
|
|
range = V4L2_QUANTIZATION_LIM_RANGE;
|
|
break;
|
|
case GST_VIDEO_COLOR_RANGE_UNKNOWN:
|
|
/* We let the driver pick a default one */
|
|
break;
|
|
default:
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Unknown colorimetry range %d", info.colorimetry.range);
|
|
break;
|
|
}
|
|
|
|
switch (info.colorimetry.matrix) {
|
|
case GST_VIDEO_COLOR_MATRIX_RGB:
|
|
/* save the matrix so we can restore it on get() call from default */
|
|
v4l2object->matrix = GST_VIDEO_COLOR_MATRIX_RGB;
|
|
/* Unspecified, leave to default */
|
|
break;
|
|
/* FCC is about the same as BT601 with less digit */
|
|
case GST_VIDEO_COLOR_MATRIX_FCC:
|
|
case GST_VIDEO_COLOR_MATRIX_BT601:
|
|
matrix = V4L2_YCBCR_ENC_601;
|
|
break;
|
|
case GST_VIDEO_COLOR_MATRIX_BT709:
|
|
matrix = V4L2_YCBCR_ENC_709;
|
|
break;
|
|
case GST_VIDEO_COLOR_MATRIX_SMPTE240M:
|
|
matrix = V4L2_YCBCR_ENC_SMPTE240M;
|
|
break;
|
|
case GST_VIDEO_COLOR_MATRIX_BT2020:
|
|
matrix = V4L2_YCBCR_ENC_BT2020;
|
|
break;
|
|
case GST_VIDEO_COLOR_MATRIX_UNKNOWN:
|
|
/* We let the driver pick a default one */
|
|
break;
|
|
default:
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Unknown colorimetry matrix %d", info.colorimetry.matrix);
|
|
break;
|
|
}
|
|
|
|
switch (info.colorimetry.transfer) {
|
|
case GST_VIDEO_TRANSFER_GAMMA18:
|
|
case GST_VIDEO_TRANSFER_GAMMA20:
|
|
case GST_VIDEO_TRANSFER_GAMMA22:
|
|
case GST_VIDEO_TRANSFER_GAMMA28:
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"GAMMA 18, 20, 22, 28 transfer functions not supported");
|
|
/* fallthrough */
|
|
case GST_VIDEO_TRANSFER_GAMMA10:
|
|
transfer = V4L2_XFER_FUNC_NONE;
|
|
break;
|
|
case GST_VIDEO_TRANSFER_SMPTE2084:
|
|
transfer = V4L2_XFER_FUNC_SMPTE2084;
|
|
break;
|
|
case GST_VIDEO_TRANSFER_BT601:
|
|
case GST_VIDEO_TRANSFER_BT2020_12:
|
|
case GST_VIDEO_TRANSFER_BT2020_10:
|
|
case GST_VIDEO_TRANSFER_BT709:
|
|
v4l2object->transfer = info.colorimetry.transfer;
|
|
transfer = V4L2_XFER_FUNC_709;
|
|
break;
|
|
case GST_VIDEO_TRANSFER_SMPTE240M:
|
|
transfer = V4L2_XFER_FUNC_SMPTE240M;
|
|
break;
|
|
case GST_VIDEO_TRANSFER_SRGB:
|
|
transfer = V4L2_XFER_FUNC_SRGB;
|
|
break;
|
|
case GST_VIDEO_TRANSFER_LOG100:
|
|
case GST_VIDEO_TRANSFER_LOG316:
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"LOG 100, 316 transfer functions not supported");
|
|
/* FIXME No known sensible default, maybe AdobeRGB ? */
|
|
break;
|
|
case GST_VIDEO_TRANSFER_UNKNOWN:
|
|
/* We let the driver pick a default one */
|
|
break;
|
|
default:
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Unknown colorimetry transfer %d", info.colorimetry.transfer);
|
|
break;
|
|
}
|
|
|
|
if (colorspace == 0) {
|
|
/* Try to guess colorspace according to pixelformat and size */
|
|
if (GST_VIDEO_INFO_IS_YUV (&info)) {
|
|
if (range == V4L2_QUANTIZATION_FULL_RANGE
|
|
&& matrix == V4L2_YCBCR_ENC_601 && transfer == 0) {
|
|
/* Full range BT.601 YCbCr encoding with unknown primaries and transfer
|
|
* function most likely is JPEG */
|
|
colorspace = V4L2_COLORSPACE_JPEG;
|
|
transfer = V4L2_XFER_FUNC_SRGB;
|
|
} else {
|
|
/* SD streams likely use SMPTE170M and HD streams REC709 */
|
|
if (width <= 720 && GST_VIDEO_INFO_HEIGHT (&info) <= 576)
|
|
colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
else
|
|
colorspace = V4L2_COLORSPACE_REC709;
|
|
}
|
|
} else if (GST_VIDEO_INFO_IS_RGB (&info)) {
|
|
colorspace = V4L2_COLORSPACE_SRGB;
|
|
transfer = V4L2_XFER_FUNC_NONE;
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired format %dx%d, format "
|
|
"%" GST_FOURCC_FORMAT " stride: %d", width, height,
|
|
GST_FOURCC_ARGS (pixelformat), GST_VIDEO_INFO_PLANE_STRIDE (&info, 0));
|
|
|
|
s = gst_caps_get_structure (caps, 0);
|
|
|
|
if (gst_structure_has_field (s, "bit-depth-chroma")) {
|
|
gst_structure_get_uint (s, "bit-depth-chroma", &pixel_bitdepth);
|
|
GST_DEBUG_OBJECT (v4l2object->element, "Got pixel bit depth %u from caps",
|
|
pixel_bitdepth);
|
|
}
|
|
|
|
memset (&format, 0x00, sizeof (struct v4l2_format));
|
|
format.type = v4l2object->type;
|
|
|
|
if (is_mplane) {
|
|
format.type = v4l2object->type;
|
|
format.fmt.pix_mp.pixelformat = pixelformat;
|
|
format.fmt.pix_mp.width = width;
|
|
format.fmt.pix_mp.height = height;
|
|
format.fmt.pix_mp.field = field;
|
|
format.fmt.pix_mp.num_planes = n_v4l_planes;
|
|
|
|
/* try to ask our preferred stride but it's not a failure if not
|
|
* accepted */
|
|
for (i = 0; i < n_v4l_planes; i++) {
|
|
gint stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, i);
|
|
|
|
if (GST_VIDEO_FORMAT_INFO_IS_TILED (info.finfo))
|
|
stride = GST_VIDEO_TILE_X_TILES (stride) *
|
|
GST_VIDEO_FORMAT_INFO_TILE_STRIDE (info.finfo, i);
|
|
|
|
format.fmt.pix_mp.plane_fmt[i].bytesperline = stride;
|
|
}
|
|
|
|
if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_ENCODED)
|
|
format.fmt.pix_mp.plane_fmt[0].sizeimage =
|
|
calculate_max_sizeimage (v4l2object, pixel_bitdepth);
|
|
} else {
|
|
gint stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, 0);
|
|
|
|
format.type = v4l2object->type;
|
|
|
|
format.fmt.pix.width = width;
|
|
format.fmt.pix.height = height;
|
|
format.fmt.pix.pixelformat = pixelformat;
|
|
format.fmt.pix.field = field;
|
|
|
|
if (GST_VIDEO_FORMAT_INFO_IS_TILED (info.finfo))
|
|
stride = GST_VIDEO_TILE_X_TILES (stride) *
|
|
GST_VIDEO_FORMAT_INFO_TILE_STRIDE (info.finfo, i);
|
|
|
|
/* try to ask our preferred stride */
|
|
format.fmt.pix.bytesperline = stride;
|
|
|
|
if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_ENCODED)
|
|
format.fmt.pix.sizeimage =
|
|
calculate_max_sizeimage (v4l2object, pixel_bitdepth);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired format is %dx%d, format "
|
|
"%" GST_FOURCC_FORMAT ", nb planes %d", format.fmt.pix.width,
|
|
format.fmt.pix_mp.height,
|
|
GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
|
|
is_mplane ? format.fmt.pix_mp.num_planes : 1);
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
if (is_mplane) {
|
|
for (i = 0; i < format.fmt.pix_mp.num_planes; i++)
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d",
|
|
format.fmt.pix_mp.plane_fmt[i].bytesperline);
|
|
} else {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d",
|
|
format.fmt.pix.bytesperline);
|
|
}
|
|
#endif
|
|
|
|
if (is_mplane) {
|
|
format.fmt.pix_mp.colorspace = colorspace;
|
|
format.fmt.pix_mp.quantization = range;
|
|
format.fmt.pix_mp.ycbcr_enc = matrix;
|
|
format.fmt.pix_mp.xfer_func = transfer;
|
|
if (V4L2_TYPE_IS_CAPTURE (v4l2object->type))
|
|
format.fmt.pix_mp.flags |= V4L2_PIX_FMT_FLAG_SET_CSC;
|
|
} else {
|
|
format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
|
|
format.fmt.pix.colorspace = colorspace;
|
|
format.fmt.pix.quantization = range;
|
|
format.fmt.pix.ycbcr_enc = matrix;
|
|
format.fmt.pix.xfer_func = transfer;
|
|
if (V4L2_TYPE_IS_CAPTURE (v4l2object->type))
|
|
format.fmt.pix.flags |= V4L2_PIX_FMT_FLAG_SET_CSC;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired colorspace is %d:%d:%d:%d",
|
|
colorspace, range, matrix, transfer);
|
|
|
|
if (try_only) {
|
|
if (v4l2object->ioctl (fd, VIDIOC_TRY_FMT, &format) < 0)
|
|
goto try_fmt_failed;
|
|
} else {
|
|
if (v4l2object->ioctl (fd, VIDIOC_S_FMT, &format) < 0)
|
|
goto set_fmt_failed;
|
|
}
|
|
|
|
if (is_mplane) {
|
|
colorspace = format.fmt.pix_mp.colorspace;
|
|
range = format.fmt.pix_mp.quantization;
|
|
matrix = format.fmt.pix_mp.ycbcr_enc;
|
|
transfer = format.fmt.pix_mp.xfer_func;
|
|
} else {
|
|
colorspace = format.fmt.pix.colorspace;
|
|
range = format.fmt.pix.quantization;
|
|
matrix = format.fmt.pix.ycbcr_enc;
|
|
transfer = format.fmt.pix.xfer_func;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got format of %dx%d, format "
|
|
"%" GST_FOURCC_FORMAT ", nb planes %d, colorspace %d:%d:%d:%d field: %s",
|
|
format.fmt.pix.width, format.fmt.pix_mp.height,
|
|
GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
|
|
is_mplane ? format.fmt.pix_mp.num_planes : 1,
|
|
colorspace, range, matrix, transfer, field_to_str (format.fmt.pix.field));
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
if (is_mplane) {
|
|
for (i = 0; i < format.fmt.pix_mp.num_planes; i++)
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d, sizeimage %d",
|
|
format.fmt.pix_mp.plane_fmt[i].bytesperline,
|
|
format.fmt.pix_mp.plane_fmt[i].sizeimage);
|
|
} else {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d, sizeimage %d",
|
|
format.fmt.pix.bytesperline, format.fmt.pix.sizeimage);
|
|
}
|
|
#endif
|
|
|
|
if (format.fmt.pix.pixelformat != pixelformat)
|
|
goto invalid_pixelformat;
|
|
|
|
/* Passing HDR10 information
|
|
*
|
|
* TODO:
|
|
* - Missing capture (v4l2src) HDR10 configuration and/or reporting
|
|
* - The API is not capable of HDR to HDR conversion as controls are not specific to queues
|
|
*/
|
|
if (V4L2_TYPE_IS_OUTPUT (v4l2object->type)) {
|
|
GstVideoMasteringDisplayInfo video_master_display_info;
|
|
GstVideoContentLightLevel video_content_light_level;
|
|
struct v4l2_ext_control ext_control[2];
|
|
struct v4l2_ctrl_hdr10_mastering_display hdr10_mastering_display;
|
|
struct v4l2_ctrl_hdr10_cll_info hdr10_cll_info;
|
|
int count = 0;
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Passing HDR10 medata");
|
|
memset (&hdr10_cll_info, 0, sizeof (struct v4l2_ctrl_hdr10_cll_info));
|
|
memset (&hdr10_mastering_display,
|
|
0, sizeof (struct v4l2_ctrl_hdr10_mastering_display));
|
|
|
|
if (gst_video_mastering_display_info_from_caps (&video_master_display_info,
|
|
caps)) {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"video mastering display info: %d:%d:%d:%d:%d:%d:%d:%d:%d:%d",
|
|
video_master_display_info.display_primaries[0].x,
|
|
video_master_display_info.display_primaries[0].y,
|
|
video_master_display_info.display_primaries[1].x,
|
|
video_master_display_info.display_primaries[1].y,
|
|
video_master_display_info.display_primaries[2].x,
|
|
video_master_display_info.display_primaries[2].y,
|
|
video_master_display_info.white_point.x,
|
|
video_master_display_info.white_point.y,
|
|
video_master_display_info.max_display_mastering_luminance,
|
|
video_master_display_info.min_display_mastering_luminance);
|
|
|
|
hdr10_mastering_display.display_primaries_x[2] =
|
|
video_master_display_info.display_primaries[0].x;
|
|
hdr10_mastering_display.display_primaries_y[2] =
|
|
video_master_display_info.display_primaries[0].y;
|
|
hdr10_mastering_display.display_primaries_x[0] =
|
|
video_master_display_info.display_primaries[1].x;
|
|
hdr10_mastering_display.display_primaries_y[0] =
|
|
video_master_display_info.display_primaries[1].y;
|
|
hdr10_mastering_display.display_primaries_x[1] =
|
|
video_master_display_info.display_primaries[2].x;
|
|
hdr10_mastering_display.display_primaries_y[1] =
|
|
video_master_display_info.display_primaries[2].y;
|
|
hdr10_mastering_display.white_point_x =
|
|
video_master_display_info.white_point.x;
|
|
hdr10_mastering_display.white_point_y =
|
|
video_master_display_info.white_point.y;
|
|
hdr10_mastering_display.min_display_mastering_luminance =
|
|
video_master_display_info.min_display_mastering_luminance;
|
|
hdr10_mastering_display.max_display_mastering_luminance =
|
|
video_master_display_info.max_display_mastering_luminance;
|
|
|
|
ext_control[count].id = V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY;
|
|
ext_control[count].size =
|
|
sizeof (struct v4l2_ctrl_hdr10_mastering_display);
|
|
ext_control[count].ptr = &hdr10_mastering_display;
|
|
count++;
|
|
}
|
|
|
|
if (gst_video_content_light_level_from_caps (&video_content_light_level,
|
|
caps)) {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "video content light level: %d:%d",
|
|
video_content_light_level.max_content_light_level,
|
|
video_content_light_level.max_frame_average_light_level);
|
|
|
|
hdr10_cll_info.max_content_light_level =
|
|
video_content_light_level.max_content_light_level;
|
|
hdr10_cll_info.max_pic_average_light_level =
|
|
video_content_light_level.max_frame_average_light_level;
|
|
|
|
ext_control[count].id = V4L2_CID_COLORIMETRY_HDR10_CLL_INFO;
|
|
ext_control[count].size = sizeof (struct v4l2_ctrl_hdr10_cll_info);
|
|
ext_control[count].ptr = &hdr10_cll_info;
|
|
count++;
|
|
}
|
|
|
|
if (count != 0) {
|
|
struct v4l2_ext_controls ext_controls = {
|
|
.ctrl_class = V4L2_CTRL_CLASS_COLORIMETRY,
|
|
.count = count,
|
|
.controls = ext_control,
|
|
};
|
|
|
|
if (v4l2object->ioctl (fd, VIDIOC_S_EXT_CTRLS, &ext_controls) < 0) {
|
|
if (errno != ENOTTY) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Failed to set HDR10 metadata, err: %s", g_strerror (errno));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Only negotiate size with raw data.
|
|
* For some codecs the dimensions are *not* in the bitstream, IIRC VC1
|
|
* in ASF mode for example, there is also not reason for a driver to
|
|
* change the size. */
|
|
if (info.finfo->format != GST_VIDEO_FORMAT_ENCODED) {
|
|
/* We can crop larger images */
|
|
if (format.fmt.pix.width < width || format.fmt.pix.height < height)
|
|
goto invalid_dimensions;
|
|
|
|
/* Note, this will be adjusted if upstream has non-centered cropping. */
|
|
align.padding_top = 0;
|
|
align.padding_bottom = format.fmt.pix.height - height;
|
|
align.padding_left = 0;
|
|
align.padding_right = format.fmt.pix.width - width;
|
|
}
|
|
|
|
if (is_mplane && format.fmt.pix_mp.num_planes != n_v4l_planes)
|
|
goto invalid_planes;
|
|
|
|
/* used to check colorimetry and interlace mode fields presence */
|
|
if (gst_v4l2_object_get_interlace_mode (format.fmt.pix.field,
|
|
&info.interlace_mode)) {
|
|
if (gst_structure_has_field (s, "interlace-mode")) {
|
|
if (format.fmt.pix.field != field)
|
|
goto invalid_field;
|
|
}
|
|
} else {
|
|
/* The driver (or libv4l2) is miss-behaving, just ignore interlace-mode from
|
|
* the TRY_FMT */
|
|
disable_interlacing = TRUE;
|
|
if (gst_structure_has_field (s, "interlace-mode"))
|
|
gst_structure_remove_field (s, "interlace-mode");
|
|
}
|
|
|
|
if (gst_v4l2_object_get_colorspace (v4l2object, &format, &info.colorimetry)) {
|
|
if (gst_structure_has_field (s, "colorimetry")) {
|
|
if (!gst_v4l2_video_colorimetry_matches (&info.colorimetry, caps))
|
|
goto invalid_colorimetry;
|
|
}
|
|
} else {
|
|
/* The driver (or libv4l2) is miss-behaving, just ignore colorimetry from
|
|
* the TRY_FMT */
|
|
disable_colorimetry = TRUE;
|
|
if (gst_structure_has_field (s, "colorimetry"))
|
|
gst_structure_remove_field (s, "colorimetry");
|
|
}
|
|
|
|
/* In case we have skipped the try_fmt probes, we'll need to set the
|
|
* interlace-mode and colorimetry back into the caps. */
|
|
if (v4l2object->skip_try_fmt_probes) {
|
|
if (!disable_interlacing && !gst_structure_has_field (s, "interlace-mode")) {
|
|
gst_structure_set (s, "interlace-mode", G_TYPE_STRING,
|
|
gst_video_interlace_mode_to_string (info.interlace_mode), NULL);
|
|
}
|
|
if (!disable_colorimetry && !gst_structure_has_field (s, "colorimetry")) {
|
|
gchar *str = gst_video_colorimetry_to_string (&info.colorimetry);
|
|
gst_structure_set (s, "colorimetry", G_TYPE_STRING, str, NULL);
|
|
g_free (str);
|
|
}
|
|
}
|
|
|
|
/* VIDIOC_ENUM_FRAMEINTERVALS for the desired size */
|
|
if (try_only) {
|
|
GstStructure *tmp =
|
|
gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
|
|
pixelformat, width, height, s);
|
|
|
|
if (tmp) {
|
|
gdouble desired_fps;
|
|
|
|
gst_util_fraction_to_double (fps_n, fps_d, &desired_fps);
|
|
|
|
if (gst_structure_has_field_typed (tmp, "framerate",
|
|
GST_TYPE_FRACTION_RANGE)) {
|
|
gint min_fps_n, min_fps_d, max_fps_n, max_fps_d;
|
|
gdouble max_fps, min_fps;
|
|
|
|
gst_structure_get (tmp, "framerate", GST_TYPE_FRACTION_RANGE,
|
|
&min_fps_n, &min_fps_d, &max_fps_n, &max_fps_d, NULL);
|
|
gst_util_fraction_to_double (min_fps_n, min_fps_d, &min_fps);
|
|
gst_util_fraction_to_double (max_fps_n, max_fps_d, &max_fps);
|
|
|
|
if (desired_fps > max_fps) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Desired framerate < max: %d/%d (%f) < %d/%d (%f), clipping",
|
|
fps_n, fps_d, desired_fps, max_fps_n, max_fps_d, max_fps);
|
|
fps_n = max_fps_n;
|
|
fps_d = max_fps_d;
|
|
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, fps_n, fps_d,
|
|
NULL);
|
|
}
|
|
if (desired_fps < min_fps) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Desired framerate > min: %d/%d (%f) > %d/%d (%f), clipping",
|
|
fps_n, fps_d, desired_fps, min_fps_n, min_fps_d, min_fps);
|
|
fps_n = min_fps_n;
|
|
fps_d = min_fps_d;
|
|
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, fps_n, fps_d,
|
|
NULL);
|
|
}
|
|
} else if (gst_structure_has_field_typed (tmp, "framerate",
|
|
GST_TYPE_FRACTION)) {
|
|
gint corrected_fps_n, corrected_fps_d;
|
|
gdouble corrected_fps;
|
|
gst_structure_get (tmp, "framerate", GST_TYPE_FRACTION,
|
|
&corrected_fps_n, &corrected_fps_d, NULL);
|
|
gst_util_fraction_to_double (corrected_fps_n, corrected_fps_d,
|
|
&corrected_fps);
|
|
if (corrected_fps_n != fps_n || corrected_fps_d != fps_d) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Driver not providing desired framerate: %d/%d (%f) != %d/%d (%f), correcting",
|
|
fps_n, fps_d, desired_fps, corrected_fps_n, corrected_fps_d,
|
|
corrected_fps);
|
|
fps_n = corrected_fps_n;
|
|
fps_d = corrected_fps_d;
|
|
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, fps_n, fps_d,
|
|
NULL);
|
|
}
|
|
} else if (gst_structure_has_field_typed (tmp, "framerate",
|
|
GST_TYPE_LIST)) {
|
|
if (gst_structure_fixate_field_nearest_fraction (tmp, "framerate",
|
|
fps_n, fps_d)) {
|
|
gint corrected_fps_n, corrected_fps_d;
|
|
gst_structure_get_fraction (tmp, "framerate", &corrected_fps_n,
|
|
&corrected_fps_d);
|
|
|
|
if (corrected_fps_n != fps_n || corrected_fps_d != fps_d) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Desired framerate not supported: %d/%d (%f), corrected to %d/%d",
|
|
fps_n, fps_d, desired_fps, corrected_fps_n, corrected_fps_d);
|
|
fps_n = corrected_fps_n;
|
|
fps_d = corrected_fps_d;
|
|
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, fps_n, fps_d,
|
|
NULL);
|
|
}
|
|
}
|
|
} else {
|
|
g_assert_not_reached ();
|
|
}
|
|
}
|
|
gst_clear_structure (&tmp);
|
|
}
|
|
|
|
if (try_only) /* good enough for trying only */
|
|
return TRUE;
|
|
|
|
if (GST_VIDEO_INFO_HAS_ALPHA (&info)) {
|
|
struct v4l2_control ctl = { 0, };
|
|
ctl.id = V4L2_CID_ALPHA_COMPONENT;
|
|
ctl.value = 0xff;
|
|
|
|
if (v4l2object->ioctl (fd, VIDIOC_S_CTRL, &ctl) < 0)
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Failed to set alpha component value");
|
|
}
|
|
|
|
/* Is there a reason we require the caller to always specify a framerate? */
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired framerate: %u/%u", fps_n,
|
|
fps_d);
|
|
|
|
memset (&streamparm, 0x00, sizeof (struct v4l2_streamparm));
|
|
streamparm.type = v4l2object->type;
|
|
|
|
if (v4l2object->ioctl (fd, VIDIOC_G_PARM, &streamparm) < 0)
|
|
goto get_parm_failed;
|
|
|
|
if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE
|
|
|| v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
|
|
GST_VIDEO_INFO_FPS_N (&info) =
|
|
streamparm.parm.capture.timeperframe.denominator;
|
|
GST_VIDEO_INFO_FPS_D (&info) =
|
|
streamparm.parm.capture.timeperframe.numerator;
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got capture framerate: %u/%u",
|
|
streamparm.parm.capture.timeperframe.denominator,
|
|
streamparm.parm.capture.timeperframe.numerator);
|
|
|
|
/* We used to skip frame rate setup if the camera was already setup
|
|
* with the requested frame rate. This breaks some cameras though,
|
|
* causing them to not output data (several models of Thinkpad cameras
|
|
* have this problem at least).
|
|
* So, don't skip. */
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "Setting capture framerate to %u/%u",
|
|
fps_n, fps_d);
|
|
/* We want to change the frame rate, so check whether we can. Some cheap USB
|
|
* cameras don't have the capability */
|
|
if ((streamparm.parm.capture.capability & V4L2_CAP_TIMEPERFRAME) == 0) {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Not setting capture framerate (not supported)");
|
|
goto done;
|
|
}
|
|
|
|
/* Variable framerate is not a V4L2 concept, simply default to 30fps */
|
|
if (fps_n == 0 && fps_d == 1) {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Variable framerate not supported, assuming 30fps");
|
|
streamparm.parm.capture.timeperframe.numerator = 1;
|
|
streamparm.parm.capture.timeperframe.denominator = 30;
|
|
} else {
|
|
/* Note: V4L2 wants the frame interval, we have the frame rate */
|
|
streamparm.parm.capture.timeperframe.numerator = fps_d;
|
|
streamparm.parm.capture.timeperframe.denominator = fps_n;
|
|
}
|
|
|
|
/* some cheap USB cam's won't accept any change */
|
|
if (v4l2object->ioctl (fd, VIDIOC_S_PARM, &streamparm) < 0)
|
|
goto set_parm_failed;
|
|
|
|
if (fps_n == 0 && fps_d == 1) {
|
|
/* just keep reporting variable framerate */
|
|
} else if (streamparm.parm.capture.timeperframe.numerator > 0 &&
|
|
streamparm.parm.capture.timeperframe.denominator > 0) {
|
|
|
|
if ((streamparm.parm.capture.timeperframe.numerator != fps_d) ||
|
|
(streamparm.parm.capture.timeperframe.denominator != fps_n)) {
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Requested framerate (%u/%u) adjusted to %u/%u",
|
|
fps_n, fps_d,
|
|
streamparm.parm.capture.timeperframe.denominator,
|
|
streamparm.parm.capture.timeperframe.numerator);
|
|
|
|
/* Update CAPS */
|
|
gst_structure_set (s, "framerate", GST_TYPE_FRACTION,
|
|
streamparm.parm.capture.timeperframe.denominator,
|
|
streamparm.parm.capture.timeperframe.numerator, NULL);
|
|
}
|
|
|
|
/* get new values */
|
|
fps_d = streamparm.parm.capture.timeperframe.numerator;
|
|
fps_n = streamparm.parm.capture.timeperframe.denominator;
|
|
|
|
GST_INFO_OBJECT (v4l2object->dbg_obj, "Set capture framerate to %u/%u",
|
|
fps_n, fps_d);
|
|
} else {
|
|
/* fix v4l2 capture driver to provide framerate values */
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Reuse caps framerate %u/%u - fix v4l2 capture driver", fps_n, fps_d);
|
|
}
|
|
|
|
GST_VIDEO_INFO_FPS_N (&info) = fps_n;
|
|
GST_VIDEO_INFO_FPS_D (&info) = fps_d;
|
|
} else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT
|
|
|| v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
|
|
GST_VIDEO_INFO_FPS_N (&info) =
|
|
streamparm.parm.output.timeperframe.denominator;
|
|
GST_VIDEO_INFO_FPS_D (&info) =
|
|
streamparm.parm.output.timeperframe.numerator;
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got output framerate: %u/%u",
|
|
streamparm.parm.output.timeperframe.denominator,
|
|
streamparm.parm.output.timeperframe.numerator);
|
|
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "Setting output framerate to %u/%u",
|
|
fps_n, fps_d);
|
|
if ((streamparm.parm.output.capability & V4L2_CAP_TIMEPERFRAME) == 0) {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Not setting output framerate (not supported)");
|
|
goto done;
|
|
}
|
|
|
|
/* Variable framerate is not a V4L2 concept, simply default to 30fps */
|
|
if (fps_n == 0 && fps_d == 1) {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Variable framerate not supported, assuming 30fps");
|
|
streamparm.parm.output.timeperframe.numerator = 1;
|
|
streamparm.parm.output.timeperframe.denominator = 30;
|
|
} else {
|
|
/* Note: V4L2 wants the frame interval, we have the frame rate */
|
|
streamparm.parm.output.timeperframe.numerator = fps_d;
|
|
streamparm.parm.output.timeperframe.denominator = fps_n;
|
|
}
|
|
|
|
if (v4l2object->ioctl (fd, VIDIOC_S_PARM, &streamparm) < 0)
|
|
goto set_parm_failed;
|
|
|
|
if (fps_n == 0 && fps_d == 1) {
|
|
/* just keep reporting variable framerate */
|
|
} else if (streamparm.parm.output.timeperframe.numerator > 0 &&
|
|
streamparm.parm.output.timeperframe.denominator > 0) {
|
|
/* get new values */
|
|
fps_d = streamparm.parm.output.timeperframe.numerator;
|
|
fps_n = streamparm.parm.output.timeperframe.denominator;
|
|
|
|
GST_INFO_OBJECT (v4l2object->dbg_obj, "Set output framerate to %u/%u",
|
|
fps_n, fps_d);
|
|
} else {
|
|
/* fix v4l2 output driver to provide framerate values */
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Reuse caps framerate %u/%u - fix v4l2 output driver", fps_n, fps_d);
|
|
}
|
|
|
|
GST_VIDEO_INFO_FPS_N (&info) = fps_n;
|
|
GST_VIDEO_INFO_FPS_D (&info) = fps_d;
|
|
}
|
|
|
|
done:
|
|
/* add boolean return, so we can fail on drivers bugs */
|
|
gst_v4l2_object_save_format (v4l2object, fmtdesc, &format, &info, &align);
|
|
|
|
/* reset composition region to match the S_FMT size */
|
|
gst_v4l2_object_reset_compose_region (v4l2object);
|
|
|
|
/* now configure the pool */
|
|
if (!gst_v4l2_object_setup_pool (v4l2object, caps))
|
|
goto pool_failed;
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
invalid_caps:
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "can't parse caps %" GST_PTR_FORMAT,
|
|
caps);
|
|
|
|
GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
|
|
(_("Invalid caps")), ("Can't parse caps %" GST_PTR_FORMAT, caps));
|
|
return FALSE;
|
|
}
|
|
try_fmt_failed:
|
|
{
|
|
if (errno == EINVAL) {
|
|
GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
|
|
(_("Device '%s' has no supported format"), v4l2object->videodev),
|
|
("Call to TRY_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
|
|
GST_FOURCC_ARGS (pixelformat), width, height,
|
|
g_strerror (errno)));
|
|
} else {
|
|
GST_V4L2_ERROR (error, RESOURCE, FAILED,
|
|
(_("Device '%s' failed during initialization"),
|
|
v4l2object->videodev),
|
|
("Call to TRY_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
|
|
GST_FOURCC_ARGS (pixelformat), width, height,
|
|
g_strerror (errno)));
|
|
}
|
|
return FALSE;
|
|
}
|
|
set_fmt_failed:
|
|
{
|
|
if (errno == EBUSY) {
|
|
GST_V4L2_ERROR (error, RESOURCE, BUSY,
|
|
(_("Device '%s' is busy"), v4l2object->videodev),
|
|
("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
|
|
GST_FOURCC_ARGS (pixelformat), width, height,
|
|
g_strerror (errno)));
|
|
} else if (errno == EINVAL) {
|
|
GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
|
|
(_("Device '%s' has no supported format"), v4l2object->videodev),
|
|
("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
|
|
GST_FOURCC_ARGS (pixelformat), width, height,
|
|
g_strerror (errno)));
|
|
} else {
|
|
GST_V4L2_ERROR (error, RESOURCE, FAILED,
|
|
(_("Device '%s' failed during initialization"),
|
|
v4l2object->videodev),
|
|
("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
|
|
GST_FOURCC_ARGS (pixelformat), width, height,
|
|
g_strerror (errno)));
|
|
}
|
|
return FALSE;
|
|
}
|
|
invalid_dimensions:
|
|
{
|
|
GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
|
|
(_("Device '%s' cannot capture at %dx%d"),
|
|
v4l2object->videodev, width, height),
|
|
("Tried to capture at %dx%d, but device returned size %dx%d",
|
|
width, height, format.fmt.pix.width, format.fmt.pix.height));
|
|
return FALSE;
|
|
}
|
|
invalid_pixelformat:
|
|
{
|
|
GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
|
|
(_("Device '%s' cannot capture in the specified format"),
|
|
v4l2object->videodev),
|
|
("Tried to capture in %" GST_FOURCC_FORMAT
|
|
", but device returned format" " %" GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (pixelformat),
|
|
GST_FOURCC_ARGS (format.fmt.pix.pixelformat)));
|
|
return FALSE;
|
|
}
|
|
invalid_planes:
|
|
{
|
|
GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
|
|
(_("Device '%s' does support non-contiguous planes"),
|
|
v4l2object->videodev),
|
|
("Device wants %d planes", format.fmt.pix_mp.num_planes));
|
|
return FALSE;
|
|
}
|
|
invalid_field:
|
|
{
|
|
enum v4l2_field wanted_field;
|
|
|
|
if (is_mplane)
|
|
wanted_field = format.fmt.pix_mp.field;
|
|
else
|
|
wanted_field = format.fmt.pix.field;
|
|
|
|
GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
|
|
(_("Device '%s' does not support %s interlacing"),
|
|
v4l2object->videodev,
|
|
field == V4L2_FIELD_NONE ? "progressive" : "interleaved"),
|
|
("Device wants %s interlacing",
|
|
wanted_field == V4L2_FIELD_NONE ? "progressive" : "interleaved"));
|
|
return FALSE;
|
|
}
|
|
invalid_colorimetry:
|
|
{
|
|
gchar *wanted_colorimetry;
|
|
|
|
wanted_colorimetry = gst_video_colorimetry_to_string (&info.colorimetry);
|
|
|
|
GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
|
|
(_("Device '%s' does not support %s colorimetry"),
|
|
v4l2object->videodev, gst_structure_get_string (s, "colorimetry")),
|
|
("Device wants %s colorimetry", wanted_colorimetry));
|
|
|
|
g_free (wanted_colorimetry);
|
|
return FALSE;
|
|
}
|
|
get_parm_failed:
|
|
{
|
|
/* it's possible that this call is not supported */
|
|
if (errno != EINVAL && errno != ENOTTY) {
|
|
GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
|
|
(_("Could not get parameters on device '%s'"),
|
|
v4l2object->videodev), GST_ERROR_SYSTEM);
|
|
}
|
|
goto done;
|
|
}
|
|
set_parm_failed:
|
|
{
|
|
GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
|
|
(_("Video device did not accept new frame rate setting.")),
|
|
GST_ERROR_SYSTEM);
|
|
goto done;
|
|
}
|
|
pool_failed:
|
|
{
|
|
/* setup_pool already send the error */
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps,
|
|
GstV4l2Error * error)
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Setting format to %" GST_PTR_FORMAT,
|
|
caps);
|
|
return gst_v4l2_object_set_format_full (v4l2object, caps, FALSE, error);
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_try_format (GstV4l2Object * v4l2object, GstCaps * caps,
|
|
GstV4l2Error * error)
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Trying format %" GST_PTR_FORMAT,
|
|
caps);
|
|
return gst_v4l2_object_set_format_full (v4l2object, caps, TRUE, error);
|
|
}
|
|
|
|
/**
|
|
* gst_v4l2_object_acquire_format:
|
|
* @v4l2object: the object
|
|
* @info: a GstVideoInfo to be filled
|
|
*
|
|
* Acquire the driver chosen format. This is useful in decoder or encoder elements where
|
|
* the output format is chosen by the HW.
|
|
*
|
|
* Returns: %TRUE on success, %FALSE on failure.
|
|
*/
|
|
gboolean
|
|
gst_v4l2_object_acquire_format (GstV4l2Object * v4l2object, GstVideoInfo * info)
|
|
{
|
|
struct v4l2_fmtdesc *fmtdesc;
|
|
struct v4l2_format fmt;
|
|
struct v4l2_crop crop;
|
|
struct v4l2_selection sel;
|
|
struct v4l2_rect *r = NULL;
|
|
GstVideoFormat format;
|
|
guint width, height;
|
|
GstVideoAlignment align;
|
|
GstVideoInterlaceMode interlace_mode;
|
|
|
|
gst_video_info_init (info);
|
|
gst_video_alignment_reset (&align);
|
|
v4l2object->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
|
|
v4l2object->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
|
|
|
|
memset (&fmt, 0x00, sizeof (struct v4l2_format));
|
|
fmt.type = v4l2object->type;
|
|
if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_FMT, &fmt) < 0)
|
|
goto get_fmt_failed;
|
|
|
|
fmtdesc = gst_v4l2_object_get_format_from_fourcc (v4l2object,
|
|
fmt.fmt.pix.pixelformat);
|
|
if (fmtdesc == NULL)
|
|
goto unsupported_format;
|
|
|
|
/* No need to care about mplane, the four first params are the same */
|
|
format = gst_v4l2_object_v4l2fourcc_to_video_format (fmt.fmt.pix.pixelformat);
|
|
|
|
/* fails if we do no translate the fmt.pix.pixelformat to GstVideoFormat */
|
|
if (format == GST_VIDEO_FORMAT_UNKNOWN)
|
|
goto unsupported_format;
|
|
|
|
if (fmt.fmt.pix.width == 0 || fmt.fmt.pix.height == 0)
|
|
goto invalid_dimensions;
|
|
|
|
width = fmt.fmt.pix.width;
|
|
height = fmt.fmt.pix.height;
|
|
|
|
/* Use the default compose rectangle */
|
|
memset (&sel, 0, sizeof (struct v4l2_selection));
|
|
sel.type = v4l2object->type;
|
|
sel.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
|
|
if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_SELECTION, &sel) >= 0) {
|
|
r = &sel.r;
|
|
} else {
|
|
/* For ancient kernels, fall back to G_CROP */
|
|
memset (&crop, 0, sizeof (struct v4l2_crop));
|
|
crop.type = v4l2object->type;
|
|
if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_CROP, &crop) >= 0)
|
|
r = &crop.c;
|
|
}
|
|
if (r) {
|
|
align.padding_left = r->left;
|
|
align.padding_top = r->top;
|
|
align.padding_right = width - r->width - r->left;
|
|
align.padding_bottom = height - r->height - r->top;
|
|
width = r->width;
|
|
height = r->height;
|
|
}
|
|
|
|
switch (fmt.fmt.pix.field) {
|
|
case V4L2_FIELD_ANY:
|
|
case V4L2_FIELD_NONE:
|
|
interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
|
|
break;
|
|
case V4L2_FIELD_INTERLACED:
|
|
case V4L2_FIELD_INTERLACED_TB:
|
|
case V4L2_FIELD_INTERLACED_BT:
|
|
interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
|
|
break;
|
|
case V4L2_FIELD_ALTERNATE:
|
|
interlace_mode = GST_VIDEO_INTERLACE_MODE_ALTERNATE;
|
|
break;
|
|
default:
|
|
goto unsupported_field;
|
|
}
|
|
|
|
if (!gst_video_info_set_interlaced_format (info, format, interlace_mode,
|
|
width, height))
|
|
goto invalid_dimensions;
|
|
|
|
gst_v4l2_object_get_colorspace (v4l2object, &fmt, &info->colorimetry);
|
|
gst_v4l2_object_get_streamparm (v4l2object, info);
|
|
if ((info->fps_n == 0 && v4l2object->info.fps_d != 0)
|
|
&& (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE
|
|
|| v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) {
|
|
info->fps_d = v4l2object->info.fps_d;
|
|
info->fps_n = v4l2object->info.fps_n;
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Set capture fps to %d/%d",
|
|
info->fps_n, info->fps_d);
|
|
}
|
|
|
|
gst_v4l2_object_save_format (v4l2object, fmtdesc, &fmt, info, &align);
|
|
|
|
/* Shall we setup the pool ? */
|
|
|
|
return TRUE;
|
|
|
|
get_fmt_failed:
|
|
{
|
|
GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
|
|
(_("Video device did not provide output format.")), GST_ERROR_SYSTEM);
|
|
return FALSE;
|
|
}
|
|
invalid_dimensions:
|
|
{
|
|
GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
|
|
(_("Video device returned invalid dimensions.")),
|
|
("Expected non 0 dimensions, got %dx%d", fmt.fmt.pix.width,
|
|
fmt.fmt.pix.height));
|
|
return FALSE;
|
|
}
|
|
unsupported_field:
|
|
{
|
|
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
|
|
(_("Video device uses an unsupported interlacing method.")),
|
|
("V4L2 field type %d not supported", fmt.fmt.pix.field));
|
|
return FALSE;
|
|
}
|
|
unsupported_format:
|
|
{
|
|
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
|
|
(_("Video device uses an unsupported pixel format.")),
|
|
("V4L2 format %" GST_FOURCC_FORMAT " not supported",
|
|
GST_FOURCC_ARGS (fmt.fmt.pix.pixelformat)));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_v4l2_object_set_compose:
|
|
* @obj: the object
|
|
* @compose_rect: the region to compose
|
|
*
|
|
* Compose the video data to the regions specified in the @compose_rect.
|
|
*
|
|
* For capture devices, this compose the image sensor / video stream provided by
|
|
* the V4L2 device. The composing area specifies which part of the buffer is
|
|
* actually written to by the hardware.
|
|
* For output devices, this compose the memory buffer that GStreamer passed to
|
|
* the V4L2 device. The application may select the part of display where the
|
|
* image should be displayed. The size and position of such a window is
|
|
* controlled by the compose target.
|
|
*
|
|
* The compose_rect may be modified by the V4L2 device to a region that
|
|
* fulfills H/W requirements.
|
|
*
|
|
* Returns: %TRUE on success, %FALSE on failure.
|
|
*/
|
|
static gboolean
|
|
gst_v4l2_object_set_compose (GstV4l2Object * obj,
|
|
struct v4l2_rect *compose_rect)
|
|
{
|
|
struct v4l2_selection sel = { 0 };
|
|
|
|
GST_V4L2_CHECK_OPEN (obj);
|
|
|
|
sel.type = obj->type;
|
|
sel.target = V4L2_SEL_TGT_COMPOSE;
|
|
sel.flags = 0;
|
|
sel.r = *compose_rect;
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"Desired composing left %u, top %u, size %ux%u", sel.r.left, sel.r.top,
|
|
sel.r.width, sel.r.height);
|
|
|
|
if (obj->ioctl (obj->video_fd, VIDIOC_S_SELECTION, &sel) < 0) {
|
|
if (errno != ENOTTY) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj,
|
|
"Failed to set compose rectangle with VIDIOC_S_SELECTION: %s",
|
|
g_strerror (errno));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"Got composing left %u, top %u, size %ux%u", sel.r.left, sel.r.top,
|
|
sel.r.width, sel.r.height);
|
|
|
|
*compose_rect = sel.r;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_v4l2_object_set_crop:
|
|
* @obj: the object
|
|
* @crop_rect: the region to crop
|
|
*
|
|
* Crop the video data to the regions specified in the @crop_rect.
|
|
*
|
|
* For capture devices, this crop the image sensor / video stream provided by
|
|
* the V4L2 device.
|
|
* For output devices, this crops the memory buffer that GStreamer passed to
|
|
* the V4L2 device.
|
|
*
|
|
* The crop_rect may be modified by the V4L2 device to a region that
|
|
* fulfills H/W requirements.
|
|
*
|
|
* Returns: %TRUE on success, %FALSE on failure.
|
|
*/
|
|
gboolean
|
|
gst_v4l2_object_set_crop (GstV4l2Object * obj, struct v4l2_rect *crop_rect)
|
|
{
|
|
struct v4l2_selection sel = { 0 };
|
|
struct v4l2_crop crop = { 0 };
|
|
|
|
GST_V4L2_CHECK_OPEN (obj);
|
|
|
|
sel.type = obj->type;
|
|
sel.target = V4L2_SEL_TGT_CROP;
|
|
sel.flags = 0;
|
|
sel.r = *crop_rect;
|
|
|
|
crop.type = obj->type;
|
|
crop.c = sel.r;
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"Desired cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
|
|
crop.c.width, crop.c.height);
|
|
|
|
if (obj->ioctl (obj->video_fd, VIDIOC_S_SELECTION, &sel) < 0) {
|
|
if (errno != ENOTTY) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj,
|
|
"Failed to set crop rectangle with VIDIOC_S_SELECTION: %s",
|
|
g_strerror (errno));
|
|
return FALSE;
|
|
} else {
|
|
if (obj->ioctl (obj->video_fd, VIDIOC_S_CROP, &crop) < 0) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj, "VIDIOC_S_CROP failed");
|
|
return FALSE;
|
|
}
|
|
|
|
if (obj->ioctl (obj->video_fd, VIDIOC_G_CROP, &crop) < 0) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj, "VIDIOC_G_CROP failed");
|
|
return FALSE;
|
|
}
|
|
|
|
sel.r = crop.c;
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"Got cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
|
|
crop.c.width, crop.c.height);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_v4l2_object_setup_padding:
|
|
* @obj: v4l2 object
|
|
*
|
|
* Crop away the padding around the video data as specified
|
|
* in GstVideoAlignement data stored in @obj.
|
|
*
|
|
* For capture devices, this crop the image sensor / video stream provided by
|
|
* the V4L2 device.
|
|
* For output devices, this crops the memory buffer that GStreamer passed to
|
|
* the V4L2 device.
|
|
*
|
|
* Returns: %TRUE on success, %FALSE on failure.
|
|
*/
|
|
gboolean
|
|
gst_v4l2_object_setup_padding (GstV4l2Object * obj)
|
|
{
|
|
GstVideoAlignment *align = &obj->align;
|
|
struct v4l2_rect rect;
|
|
|
|
if (align->padding_left + align->padding_top
|
|
+ align->padding_right + align->padding_bottom == 0) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "no cropping/composing needed");
|
|
return TRUE;
|
|
}
|
|
|
|
rect.left = align->padding_left;
|
|
rect.top = align->padding_top;
|
|
rect.width = obj->info.width;
|
|
rect.height = GST_VIDEO_INFO_FIELD_HEIGHT (&obj->info);
|
|
|
|
if (V4L2_TYPE_IS_OUTPUT (obj->type)) {
|
|
return gst_v4l2_object_set_crop (obj, &rect);
|
|
} else {
|
|
return gst_v4l2_object_set_compose (obj, &rect);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_get_crop_rect (GstV4l2Object * obj, guint target,
|
|
struct v4l2_rect *result)
|
|
{
|
|
struct v4l2_rect *res_rect;
|
|
|
|
struct v4l2_selection sel = { 0 };
|
|
struct v4l2_cropcap cropcap = { 0 };
|
|
|
|
GST_V4L2_CHECK_OPEN (obj);
|
|
|
|
if (target != V4L2_SEL_TGT_CROP_BOUNDS && target != V4L2_SEL_TGT_CROP_DEFAULT)
|
|
return FALSE;
|
|
|
|
sel.type = obj->type;
|
|
sel.target = target;
|
|
|
|
res_rect = &sel.r;
|
|
|
|
if (obj->ioctl (obj->video_fd, VIDIOC_G_SELECTION, &sel) < 0) {
|
|
if (errno != ENOTTY) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj,
|
|
"Failed to get default crop rectangle with VIDIOC_G_SELECTION: %s",
|
|
g_strerror (errno));
|
|
return FALSE;
|
|
} else {
|
|
if (obj->ioctl (obj->video_fd, VIDIOC_CROPCAP, &cropcap) < 0) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj, "VIDIOC_CROPCAP failed");
|
|
return FALSE;
|
|
}
|
|
if (target == V4L2_SEL_TGT_CROP_BOUNDS)
|
|
res_rect = &cropcap.bounds;
|
|
else if (target == V4L2_SEL_TGT_CROP_DEFAULT)
|
|
res_rect = &cropcap.defrect;
|
|
}
|
|
}
|
|
|
|
*result = *res_rect;
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_get_crop_bounds (GstV4l2Object * obj, struct v4l2_rect *result)
|
|
{
|
|
return gst_v4l2_object_get_crop_rect (obj, V4L2_SEL_TGT_CROP_BOUNDS, result);
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_get_crop_default (GstV4l2Object * obj, struct v4l2_rect *result)
|
|
{
|
|
return gst_v4l2_object_get_crop_rect (obj, V4L2_SEL_TGT_CROP_DEFAULT, result);
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_caps_equal (GstV4l2Object * v4l2object, GstCaps * caps)
|
|
{
|
|
GstStructure *config;
|
|
GstCaps *oldcaps;
|
|
gboolean ret;
|
|
GstBufferPool *pool = gst_v4l2_object_get_buffer_pool (v4l2object);
|
|
|
|
if (!pool)
|
|
return FALSE;
|
|
|
|
config = gst_buffer_pool_get_config (pool);
|
|
gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
|
|
|
|
ret = oldcaps && gst_caps_is_equal (caps, oldcaps);
|
|
|
|
gst_structure_free (config);
|
|
|
|
gst_object_unref (pool);
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_caps_is_subset (GstV4l2Object * v4l2object, GstCaps * caps)
|
|
{
|
|
GstStructure *config;
|
|
GstCaps *oldcaps;
|
|
gboolean ret;
|
|
GstBufferPool *pool = gst_v4l2_object_get_buffer_pool (v4l2object);
|
|
|
|
if (!pool)
|
|
return FALSE;
|
|
|
|
config = gst_buffer_pool_get_config (pool);
|
|
gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
|
|
|
|
ret = oldcaps && gst_caps_is_subset (oldcaps, caps);
|
|
|
|
gst_structure_free (config);
|
|
|
|
gst_object_unref (pool);
|
|
return ret;
|
|
}
|
|
|
|
GstCaps *
|
|
gst_v4l2_object_get_current_caps (GstV4l2Object * v4l2object)
|
|
{
|
|
GstStructure *config;
|
|
GstCaps *oldcaps;
|
|
GstBufferPool *pool = gst_v4l2_object_get_buffer_pool (v4l2object);
|
|
|
|
if (!pool)
|
|
return NULL;
|
|
|
|
config = gst_buffer_pool_get_config (pool);
|
|
gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
|
|
|
|
if (oldcaps)
|
|
gst_caps_ref (oldcaps);
|
|
|
|
gst_structure_free (config);
|
|
|
|
gst_object_unref (pool);
|
|
return oldcaps;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_unlock (GstV4l2Object * v4l2object)
|
|
{
|
|
gboolean ret = TRUE;
|
|
GstBufferPool *pool = gst_v4l2_object_get_buffer_pool (v4l2object);
|
|
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "start flushing");
|
|
|
|
gst_poll_set_flushing (v4l2object->poll, TRUE);
|
|
|
|
if (!pool)
|
|
return ret;
|
|
|
|
if (gst_buffer_pool_is_active (pool))
|
|
gst_buffer_pool_set_flushing (pool, TRUE);
|
|
|
|
gst_object_unref (pool);
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_unlock_stop (GstV4l2Object * v4l2object)
|
|
{
|
|
gboolean ret = TRUE;
|
|
GstBufferPool *pool = gst_v4l2_object_get_buffer_pool (v4l2object);
|
|
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "stop flushing");
|
|
|
|
gst_poll_set_flushing (v4l2object->poll, FALSE);
|
|
|
|
if (!pool)
|
|
return ret;
|
|
|
|
if (gst_buffer_pool_is_active (pool))
|
|
gst_buffer_pool_set_flushing (pool, FALSE);
|
|
|
|
gst_object_unref (pool);
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_stop (GstV4l2Object * v4l2object)
|
|
{
|
|
GstBufferPool *pool;
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "stopping");
|
|
|
|
if (!GST_V4L2_IS_OPEN (v4l2object))
|
|
goto done;
|
|
if (!GST_V4L2_IS_ACTIVE (v4l2object))
|
|
goto done;
|
|
|
|
gst_poll_set_flushing (v4l2object->poll, TRUE);
|
|
|
|
pool = gst_v4l2_object_get_buffer_pool (v4l2object);
|
|
if (pool) {
|
|
if (!gst_v4l2_buffer_pool_orphan (v4l2object)) {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "deactivating pool");
|
|
gst_buffer_pool_set_active (pool, FALSE);
|
|
|
|
{
|
|
GstBufferPool *old_pool;
|
|
GST_OBJECT_LOCK (v4l2object->element);
|
|
old_pool = v4l2object->pool;
|
|
v4l2object->pool = NULL;
|
|
GST_OBJECT_UNLOCK (v4l2object->element);
|
|
if (old_pool)
|
|
gst_object_unref (old_pool);
|
|
}
|
|
}
|
|
gst_object_unref (pool);
|
|
}
|
|
|
|
GST_V4L2_SET_INACTIVE (v4l2object);
|
|
|
|
done:
|
|
return TRUE;
|
|
}
|
|
|
|
GstCaps *
|
|
gst_v4l2_object_probe_caps (GstV4l2Object * v4l2object, GstCaps * filter)
|
|
{
|
|
GstCaps *caps, *interlaced_caps;
|
|
GSList *walk;
|
|
GSList *formats;
|
|
guint32 fourcc = 0;
|
|
|
|
if (v4l2object->fmtdesc)
|
|
fourcc = GST_V4L2_PIXELFORMAT (v4l2object);
|
|
|
|
gst_v4l2_object_clear_format_list (v4l2object);
|
|
formats = gst_v4l2_object_get_format_list (v4l2object);
|
|
|
|
/* Recover the fmtdesc, it may no longer exist, in which case it will be set
|
|
* to null */
|
|
if (fourcc)
|
|
v4l2object->fmtdesc =
|
|
gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc);
|
|
|
|
caps = gst_caps_new_empty ();
|
|
interlaced_caps = gst_caps_new_empty ();
|
|
|
|
if (v4l2object->keep_aspect && !v4l2object->par) {
|
|
struct v4l2_cropcap cropcap;
|
|
|
|
memset (&cropcap, 0, sizeof (cropcap));
|
|
|
|
cropcap.type = v4l2object->type;
|
|
if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_CROPCAP, &cropcap) < 0) {
|
|
|
|
switch (errno) {
|
|
case ENODATA:
|
|
case ENOTTY:
|
|
GST_INFO_OBJECT (v4l2object->dbg_obj,
|
|
"Driver does not support VIDIOC_CROPCAP (%s), assuming pixel aspect ratio 1/1",
|
|
g_strerror (errno));
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"Failed to probe pixel aspect ratio with VIDIOC_CROPCAP: %s",
|
|
g_strerror (errno));
|
|
}
|
|
v4l2object->par = g_new0 (GValue, 1);
|
|
g_value_init (v4l2object->par, GST_TYPE_FRACTION);
|
|
gst_value_set_fraction (v4l2object->par, 1, 1);
|
|
|
|
} else if (cropcap.pixelaspect.numerator && cropcap.pixelaspect.denominator) {
|
|
v4l2object->par = g_new0 (GValue, 1);
|
|
g_value_init (v4l2object->par, GST_TYPE_FRACTION);
|
|
gst_value_set_fraction (v4l2object->par, cropcap.pixelaspect.numerator,
|
|
cropcap.pixelaspect.denominator);
|
|
}
|
|
}
|
|
|
|
for (walk = formats; walk; walk = walk->next) {
|
|
struct v4l2_fmtdesc *format;
|
|
GstStructure *template;
|
|
GstCaps *tmp;
|
|
|
|
format = (struct v4l2_fmtdesc *) walk->data;
|
|
|
|
template = gst_v4l2_object_v4l2fourcc_to_bare_struct (format->pixelformat);
|
|
|
|
if (!template) {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"unknown format %" GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (format->pixelformat));
|
|
continue;
|
|
}
|
|
|
|
/* If we have a filter, check if we need to probe this format or not */
|
|
if (filter) {
|
|
GstCaps *format_caps = gst_caps_new_empty ();
|
|
|
|
gst_caps_append_structure (format_caps, gst_structure_copy (template));
|
|
add_alternate_variant (v4l2object, format_caps, template);
|
|
|
|
if (!gst_caps_can_intersect (format_caps, filter)) {
|
|
gst_caps_unref (format_caps);
|
|
gst_structure_free (template);
|
|
continue;
|
|
}
|
|
|
|
gst_caps_unref (format_caps);
|
|
}
|
|
|
|
tmp = gst_v4l2_object_probe_caps_for_format (v4l2object,
|
|
format->pixelformat, template);
|
|
if (tmp) {
|
|
/* Add a variant of the caps with the Interlaced feature so we can negotiate it if needed */
|
|
gint i;
|
|
for (i = 0; i < gst_caps_get_size (tmp); i++) {
|
|
GstStructure *s = gst_caps_get_structure (tmp, i);
|
|
add_alternate_variant (v4l2object, interlaced_caps, s);
|
|
}
|
|
|
|
gst_caps_append (caps, tmp);
|
|
}
|
|
|
|
gst_structure_free (template);
|
|
}
|
|
|
|
caps = gst_caps_simplify (caps);
|
|
interlaced_caps = gst_caps_simplify (interlaced_caps);
|
|
|
|
gst_caps_append (caps, interlaced_caps);
|
|
|
|
if (filter) {
|
|
GstCaps *tmp;
|
|
|
|
tmp = caps;
|
|
caps = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (tmp);
|
|
}
|
|
|
|
/* Add a variant of the caps without the colorimetry so that we can negotiate
|
|
successfully even if the detected colorimetry from upstream is not supported
|
|
by the device */
|
|
if (caps) {
|
|
add_non_colorimetry_caps (v4l2object, caps);
|
|
}
|
|
|
|
GST_INFO_OBJECT (v4l2object->dbg_obj, "probed caps: %" GST_PTR_FORMAT, caps);
|
|
|
|
return caps;
|
|
}
|
|
|
|
GstCaps *
|
|
gst_v4l2_object_get_caps (GstV4l2Object * v4l2object, GstCaps * filter)
|
|
{
|
|
GstCaps *ret;
|
|
|
|
if (v4l2object->probed_caps == NULL)
|
|
v4l2object->probed_caps = gst_v4l2_object_probe_caps (v4l2object, NULL);
|
|
|
|
if (filter) {
|
|
ret = gst_caps_intersect_full (filter, v4l2object->probed_caps,
|
|
GST_CAPS_INTERSECT_FIRST);
|
|
} else {
|
|
ret = gst_caps_ref (v4l2object->probed_caps);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_match_buffer_layout (GstV4l2Object * obj, guint n_planes,
|
|
gsize offset[GST_VIDEO_MAX_PLANES], gint stride[GST_VIDEO_MAX_PLANES],
|
|
gsize buffer_size, guint padded_height)
|
|
{
|
|
guint p;
|
|
gboolean need_fmt_update = FALSE;
|
|
|
|
if (n_planes != GST_VIDEO_INFO_N_PLANES (&obj->info)) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj,
|
|
"Cannot match buffers with different number planes");
|
|
return FALSE;
|
|
}
|
|
|
|
for (p = 0; p < n_planes; p++) {
|
|
if (stride[p] < obj->info.stride[p]) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"Not matching as remote stride %i is smaller than %i on plane %u",
|
|
stride[p], obj->info.stride[p], p);
|
|
return FALSE;
|
|
} else if (stride[p] > obj->info.stride[p]) {
|
|
GST_LOG_OBJECT (obj->dbg_obj,
|
|
"remote stride %i is higher than %i on plane %u",
|
|
stride[p], obj->info.stride[p], p);
|
|
need_fmt_update = TRUE;
|
|
}
|
|
|
|
if (offset[p] < obj->info.offset[p]) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"Not matching as offset %" G_GSIZE_FORMAT
|
|
" is smaller than %" G_GSIZE_FORMAT " on plane %u",
|
|
offset[p], obj->info.offset[p], p);
|
|
return FALSE;
|
|
} else if (offset[p] > obj->info.offset[p]) {
|
|
GST_LOG_OBJECT (obj->dbg_obj,
|
|
"Remote offset %" G_GSIZE_FORMAT
|
|
" is higher than %" G_GSIZE_FORMAT " on plane %u",
|
|
offset[p], obj->info.offset[p], p);
|
|
need_fmt_update = TRUE;
|
|
}
|
|
|
|
if (padded_height) {
|
|
guint fmt_height;
|
|
|
|
if (V4L2_TYPE_IS_MULTIPLANAR (obj->type))
|
|
fmt_height = obj->format.fmt.pix_mp.height;
|
|
else
|
|
fmt_height = obj->format.fmt.pix.height;
|
|
|
|
if (padded_height > fmt_height)
|
|
need_fmt_update = TRUE;
|
|
}
|
|
}
|
|
|
|
if (need_fmt_update) {
|
|
struct v4l2_format format;
|
|
gint wanted_stride[GST_VIDEO_MAX_PLANES] = { 0, };
|
|
|
|
format = obj->format;
|
|
|
|
if (padded_height) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "Padded height %u", padded_height);
|
|
|
|
obj->align.padding_bottom =
|
|
padded_height - GST_VIDEO_INFO_FIELD_HEIGHT (&obj->info);
|
|
} else {
|
|
GST_WARNING_OBJECT (obj->dbg_obj,
|
|
"Failed to compute padded height; keep the default one");
|
|
padded_height = format.fmt.pix_mp.height;
|
|
}
|
|
|
|
/* update the current format with the stride we want to import from */
|
|
if (V4L2_TYPE_IS_MULTIPLANAR (obj->type)) {
|
|
guint i;
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "Wanted strides:");
|
|
|
|
for (i = 0; i < obj->n_v4l2_planes; i++) {
|
|
gint plane_stride = stride[i];
|
|
|
|
if (GST_VIDEO_FORMAT_INFO_IS_TILED (obj->info.finfo))
|
|
plane_stride = GST_VIDEO_TILE_X_TILES (plane_stride) *
|
|
GST_VIDEO_FORMAT_INFO_TILE_STRIDE (obj->info.finfo, i);
|
|
|
|
format.fmt.pix_mp.plane_fmt[i].bytesperline = plane_stride;
|
|
format.fmt.pix_mp.height = padded_height;
|
|
wanted_stride[i] = plane_stride;
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, " [%u] %i", i, wanted_stride[i]);
|
|
}
|
|
} else {
|
|
gint plane_stride = stride[0];
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "Wanted stride: %i", plane_stride);
|
|
|
|
if (GST_VIDEO_FORMAT_INFO_IS_TILED (obj->info.finfo))
|
|
plane_stride = GST_VIDEO_TILE_X_TILES (plane_stride) *
|
|
GST_VIDEO_FORMAT_INFO_TILE_STRIDE (obj->info.finfo, 0);
|
|
|
|
format.fmt.pix.bytesperline = plane_stride;
|
|
format.fmt.pix.height = padded_height;
|
|
wanted_stride[0] = plane_stride;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "Wanted format of %dx%d",
|
|
format.fmt.pix_mp.width, format.fmt.pix_mp.height);
|
|
if (V4L2_TYPE_IS_MULTIPLANAR (obj->type)) {
|
|
for (guint i = 0; i < format.fmt.pix_mp.num_planes; i++)
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, " [%u] stride %d, sizeimage %d", i,
|
|
format.fmt.pix_mp.plane_fmt[i].bytesperline,
|
|
format.fmt.pix_mp.plane_fmt[i].sizeimage);
|
|
} else {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, " stride %d, sizeimage %d",
|
|
format.fmt.pix.bytesperline, format.fmt.pix.sizeimage);
|
|
}
|
|
|
|
if (obj->ioctl (obj->video_fd, VIDIOC_S_FMT, &format) < 0) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj,
|
|
"Something went wrong trying to update current format: %s",
|
|
g_strerror (errno));
|
|
return FALSE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "Got format of %dx%d",
|
|
format.fmt.pix_mp.width, format.fmt.pix_mp.height);
|
|
if (V4L2_TYPE_IS_MULTIPLANAR (obj->type)) {
|
|
for (guint i = 0; i < format.fmt.pix_mp.num_planes; i++)
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, " [%u] stride %d, sizeimage %d", i,
|
|
format.fmt.pix_mp.plane_fmt[i].bytesperline,
|
|
format.fmt.pix_mp.plane_fmt[i].sizeimage);
|
|
} else {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, " stride %d, sizeimage %d",
|
|
format.fmt.pix.bytesperline, format.fmt.pix.sizeimage);
|
|
}
|
|
|
|
gst_v4l2_object_save_format (obj, obj->fmtdesc, &format, &obj->info,
|
|
&obj->align);
|
|
|
|
if (V4L2_TYPE_IS_MULTIPLANAR (obj->type)) {
|
|
guint i;
|
|
|
|
for (i = 0; i < obj->n_v4l2_planes; i++) {
|
|
if (format.fmt.pix_mp.plane_fmt[i].bytesperline != wanted_stride[i]) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"[%i] Driver did not accept the new stride (wants %i, got %i)",
|
|
i, wanted_stride[i], format.fmt.pix_mp.plane_fmt[i].bytesperline);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
if (format.fmt.pix_mp.height != padded_height) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"Driver did not accept the padded height (wants %i, got %i)",
|
|
padded_height, format.fmt.pix_mp.height);
|
|
}
|
|
} else {
|
|
if (format.fmt.pix.bytesperline != wanted_stride[0]) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"Driver did not accept the new stride (wants %i, got %i)",
|
|
wanted_stride[0], format.fmt.pix.bytesperline);
|
|
return FALSE;
|
|
}
|
|
|
|
if (format.fmt.pix.height != padded_height) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"Driver did not accept the padded height (wants %i, got %i)",
|
|
padded_height, format.fmt.pix.height);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (obj->align.padding_right || obj->align.padding_bottom) {
|
|
/* Setup padding */
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"setup padding (top: %u left: %u right: %u bottom: %u)",
|
|
obj->align.padding_top,
|
|
obj->align.padding_left,
|
|
obj->align.padding_right, obj->align.padding_bottom);
|
|
|
|
gst_v4l2_object_setup_padding (obj);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_match_buffer_layout_from_struct (GstV4l2Object * obj,
|
|
const GstStructure * s, GstCaps * caps, guint buffer_size)
|
|
{
|
|
GstVideoInfo info;
|
|
GstVideoAlignment align;
|
|
gsize plane_size[GST_VIDEO_MAX_PLANES];
|
|
|
|
gst_video_alignment_reset (&align);
|
|
|
|
if (!gst_structure_has_name (s, "video-meta") ||
|
|
!gst_buffer_pool_config_get_video_alignment (s, &align)) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj, "Invalid params");
|
|
return FALSE;
|
|
}
|
|
|
|
if (align.padding_top || align.padding_bottom || align.padding_left ||
|
|
align.padding_right) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"Upstream requested padding (top: %d bottom: %d left: %d right: %d)",
|
|
align.padding_top, align.padding_bottom, align.padding_left,
|
|
align.padding_right);
|
|
}
|
|
|
|
if (!gst_video_info_from_caps (&info, caps)) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj, "Failed to create video info");
|
|
return FALSE;
|
|
}
|
|
|
|
if (!gst_video_info_align_full (&info, &align, plane_size)) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj, "Failed to align video info");
|
|
return FALSE;
|
|
}
|
|
|
|
if (GST_VIDEO_INFO_SIZE (&info) != buffer_size) {
|
|
GST_WARNING_OBJECT (obj->dbg_obj,
|
|
"Requested buffer size (%d) doesn't match video info size (%"
|
|
G_GSIZE_FORMAT ")", buffer_size, GST_VIDEO_INFO_SIZE (&info));
|
|
return FALSE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"try matching buffer layout requested by downstream");
|
|
|
|
gst_v4l2_object_match_buffer_layout (obj, GST_VIDEO_INFO_N_PLANES (&info),
|
|
info.offset, info.stride, buffer_size,
|
|
GST_VIDEO_INFO_PLANE_HEIGHT (&info, 0, plane_size));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
|
|
{
|
|
GstCaps *caps;
|
|
GstBufferPool *pool = NULL, *other_pool = NULL, *obj_pool = NULL;
|
|
GstStructure *config;
|
|
guint size, min, max, own_min = 0;
|
|
gboolean update;
|
|
gboolean has_video_meta;
|
|
gboolean can_share_own_pool, pushing_from_our_pool = FALSE;
|
|
GstAllocator *allocator = NULL;
|
|
GstAllocationParams params = { 0 };
|
|
guint video_idx;
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "decide allocation");
|
|
|
|
g_return_val_if_fail (obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
|
obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, FALSE);
|
|
|
|
gst_query_parse_allocation (query, &caps, NULL);
|
|
|
|
obj_pool = gst_v4l2_object_get_buffer_pool (obj);
|
|
if (obj_pool == NULL) {
|
|
if (!gst_v4l2_object_setup_pool (obj, caps))
|
|
goto pool_failed;
|
|
obj_pool = gst_v4l2_object_get_buffer_pool (obj);
|
|
if (obj_pool == NULL)
|
|
goto pool_failed;
|
|
}
|
|
|
|
if (gst_query_get_n_allocation_params (query) > 0)
|
|
gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
|
|
|
|
if (gst_query_get_n_allocation_pools (query) > 0) {
|
|
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
|
|
update = TRUE;
|
|
} else {
|
|
pool = NULL;
|
|
min = max = 0;
|
|
size = 0;
|
|
update = FALSE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "allocation: size:%u min:%u max:%u pool:%"
|
|
GST_PTR_FORMAT, size, min, max, pool);
|
|
|
|
has_video_meta =
|
|
gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE,
|
|
&video_idx);
|
|
|
|
if (has_video_meta) {
|
|
const GstStructure *params;
|
|
gst_query_parse_nth_allocation_meta (query, video_idx, ¶ms);
|
|
|
|
if (params)
|
|
gst_v4l2_object_match_buffer_layout_from_struct (obj, params, caps, size);
|
|
}
|
|
|
|
can_share_own_pool = (has_video_meta || !obj->need_video_meta);
|
|
|
|
gst_v4l2_get_driver_min_buffers (obj);
|
|
/* We can't share our own pool, if it exceed V4L2 capacity */
|
|
if (min + obj->min_buffers + 1 > VIDEO_MAX_FRAME)
|
|
can_share_own_pool = FALSE;
|
|
|
|
/* select a pool */
|
|
switch (obj->mode) {
|
|
case GST_V4L2_IO_RW:
|
|
if (pool) {
|
|
/* in READ/WRITE mode, prefer a downstream pool because our own pool
|
|
* doesn't help much, we have to write to it as well */
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"read/write mode: using downstream pool");
|
|
/* use the bigest size, when we use our own pool we can't really do any
|
|
* other size than what the hardware gives us but for downstream pools
|
|
* we can try */
|
|
size = MAX (size, obj->info.size);
|
|
} else if (can_share_own_pool) {
|
|
/* no downstream pool, use our own then */
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"read/write mode: no downstream pool, using our own");
|
|
pool = gst_object_ref (obj_pool);
|
|
size = obj->info.size;
|
|
pushing_from_our_pool = TRUE;
|
|
}
|
|
break;
|
|
|
|
case GST_V4L2_IO_USERPTR:
|
|
case GST_V4L2_IO_DMABUF_IMPORT:
|
|
/* in importing mode, prefer our own pool, and pass the other pool to
|
|
* our own, so it can serve itself */
|
|
if (pool == NULL)
|
|
goto no_downstream_pool;
|
|
gst_v4l2_buffer_pool_set_other_pool (GST_V4L2_BUFFER_POOL (obj_pool),
|
|
pool);
|
|
other_pool = pool;
|
|
gst_object_unref (pool);
|
|
pool = gst_object_ref (obj_pool);
|
|
size = obj->info.size;
|
|
break;
|
|
|
|
case GST_V4L2_IO_MMAP:
|
|
case GST_V4L2_IO_DMABUF:
|
|
/* in streaming mode, prefer our own pool */
|
|
/* Check if we can use it ... */
|
|
if (can_share_own_pool) {
|
|
if (pool)
|
|
gst_object_unref (pool);
|
|
pool = gst_object_ref (obj_pool);
|
|
size = obj->info.size;
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"streaming mode: using our own pool %" GST_PTR_FORMAT, pool);
|
|
pushing_from_our_pool = TRUE;
|
|
} else if (pool) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"streaming mode: copying to downstream pool %" GST_PTR_FORMAT,
|
|
pool);
|
|
} else {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"streaming mode: no usable pool, copying to generic pool");
|
|
size = MAX (size, obj->info.size);
|
|
}
|
|
break;
|
|
case GST_V4L2_IO_AUTO:
|
|
default:
|
|
GST_WARNING_OBJECT (obj->dbg_obj, "unhandled mode");
|
|
break;
|
|
}
|
|
|
|
if (size == 0)
|
|
goto no_size;
|
|
|
|
/* If pushing from our own pool, configure it with queried minimum,
|
|
* otherwise use the minimum required */
|
|
if (pushing_from_our_pool) {
|
|
/* When pushing from our own pool, we need what downstream one, to be able
|
|
* to fill the pipeline, the minimum required to decoder according to the
|
|
* driver and 2 more, so we don't endup up with everything downstream or
|
|
* held by the decoder. We account 2 buffers for v4l2 so when one is being
|
|
* pushed downstream the other one can already be queued for the next
|
|
* frame. */
|
|
own_min = min + obj->min_buffers + 2;
|
|
|
|
/* If no allocation parameters where provided, allow for a little more
|
|
* buffers and enable copy threshold */
|
|
if (!update) {
|
|
own_min += 2;
|
|
gst_v4l2_buffer_pool_copy_at_threshold (GST_V4L2_BUFFER_POOL (pool),
|
|
TRUE);
|
|
} else {
|
|
gst_v4l2_buffer_pool_copy_at_threshold (GST_V4L2_BUFFER_POOL (pool),
|
|
FALSE);
|
|
}
|
|
|
|
} else {
|
|
/* In this case we'll have to configure two buffer pool. For our buffer
|
|
* pool, we'll need what the driver one, and one more, so we can dequeu */
|
|
own_min = obj->min_buffers + 1;
|
|
own_min = MAX (own_min, GST_V4L2_MIN_BUFFERS (obj));
|
|
|
|
/* for the downstream pool, we keep what downstream wants, though ensure
|
|
* at least a minimum if downstream didn't suggest anything (we are
|
|
* expecting the base class to create a default one for the context) */
|
|
min = MAX (min, GST_V4L2_MIN_BUFFERS (obj));
|
|
|
|
/* To import we need the other pool to hold at least own_min */
|
|
if (obj_pool == pool)
|
|
min += own_min;
|
|
}
|
|
|
|
/* Request a bigger max, if one was suggested but it's too small */
|
|
if (max != 0)
|
|
max = MAX (min, max);
|
|
|
|
/* First step, configure our own pool */
|
|
config = gst_buffer_pool_get_config (obj_pool);
|
|
|
|
if (obj->need_video_meta || has_video_meta) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "activate Video Meta");
|
|
gst_buffer_pool_config_add_option (config,
|
|
GST_BUFFER_POOL_OPTION_VIDEO_META);
|
|
}
|
|
|
|
gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
|
|
gst_buffer_pool_config_set_params (config, caps, size, own_min, 0);
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "setting own pool config to %"
|
|
GST_PTR_FORMAT, config);
|
|
|
|
/* Our pool often need to adjust the value */
|
|
if (!gst_buffer_pool_set_config (obj_pool, config)) {
|
|
config = gst_buffer_pool_get_config (obj_pool);
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "own pool config changed to %"
|
|
GST_PTR_FORMAT, config);
|
|
|
|
/* our pool will adjust the maximum buffer, which we are fine with */
|
|
if (!gst_buffer_pool_set_config (obj_pool, config))
|
|
goto config_failed;
|
|
}
|
|
|
|
/* Now configure the other pool if different */
|
|
if (obj_pool != pool)
|
|
other_pool = pool;
|
|
|
|
if (other_pool) {
|
|
config = gst_buffer_pool_get_config (other_pool);
|
|
gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
|
|
gst_buffer_pool_config_set_params (config, caps, size, min, max);
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "setting other pool config to %"
|
|
GST_PTR_FORMAT, config);
|
|
|
|
/* if downstream supports video metadata, add this to the pool config */
|
|
if (has_video_meta) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "activate Video Meta");
|
|
gst_buffer_pool_config_add_option (config,
|
|
GST_BUFFER_POOL_OPTION_VIDEO_META);
|
|
}
|
|
|
|
if (!gst_buffer_pool_set_config (other_pool, config)) {
|
|
config = gst_buffer_pool_get_config (other_pool);
|
|
|
|
if (!gst_buffer_pool_config_validate_params (config, caps, size, min,
|
|
max)) {
|
|
gst_structure_free (config);
|
|
goto config_failed;
|
|
}
|
|
|
|
if (!gst_buffer_pool_set_config (other_pool, config))
|
|
goto config_failed;
|
|
}
|
|
}
|
|
|
|
if (pool) {
|
|
/* For simplicity, simply read back the active configuration, so our base
|
|
* class get the right information */
|
|
config = gst_buffer_pool_get_config (pool);
|
|
gst_buffer_pool_config_get_params (config, NULL, &size, &min, &max);
|
|
gst_structure_free (config);
|
|
}
|
|
|
|
if (update)
|
|
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
|
|
else
|
|
gst_query_add_allocation_pool (query, pool, size, min, max);
|
|
|
|
if (allocator)
|
|
gst_object_unref (allocator);
|
|
|
|
if (pool)
|
|
gst_object_unref (pool);
|
|
|
|
if (obj_pool)
|
|
gst_object_unref (obj_pool);
|
|
|
|
return TRUE;
|
|
|
|
pool_failed:
|
|
{
|
|
/* setup_pool already send the error */
|
|
goto cleanup;
|
|
}
|
|
config_failed:
|
|
{
|
|
GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
|
|
(_("Failed to configure internal buffer pool.")), (NULL));
|
|
goto cleanup;
|
|
}
|
|
no_size:
|
|
{
|
|
GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
|
|
(_("Video device did not suggest any buffer size.")), (NULL));
|
|
goto cleanup;
|
|
}
|
|
no_downstream_pool:
|
|
{
|
|
GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
|
|
(_("No downstream pool to import from.")),
|
|
("When importing DMABUF or USERPTR, we need a pool to import from"));
|
|
goto cleanup;
|
|
}
|
|
cleanup:
|
|
{
|
|
if (allocator)
|
|
gst_object_unref (allocator);
|
|
|
|
if (pool)
|
|
gst_object_unref (pool);
|
|
|
|
if (obj_pool)
|
|
gst_object_unref (obj_pool);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_propose_allocation (GstV4l2Object * obj, GstQuery * query)
|
|
{
|
|
GstBufferPool *pool = NULL;
|
|
/* we need at least 2 buffers to operate */
|
|
guint size, min, max;
|
|
GstCaps *caps;
|
|
gboolean need_pool;
|
|
GstStructure *allocation_meta = NULL;
|
|
|
|
/* Set defaults allocation parameters */
|
|
size = obj->info.size;
|
|
min = GST_V4L2_MIN_BUFFERS (obj);
|
|
max = VIDEO_MAX_FRAME;
|
|
|
|
gst_query_parse_allocation (query, &caps, &need_pool);
|
|
|
|
if (caps == NULL)
|
|
goto no_caps;
|
|
|
|
switch (obj->mode) {
|
|
case GST_V4L2_IO_MMAP:
|
|
case GST_V4L2_IO_DMABUF:
|
|
if (need_pool) {
|
|
GstBufferPool *obj_pool = gst_v4l2_object_get_buffer_pool (obj);
|
|
if (obj_pool) {
|
|
if (!gst_buffer_pool_is_active (obj_pool))
|
|
pool = gst_object_ref (obj_pool);
|
|
|
|
gst_object_unref (obj_pool);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (pool != NULL) {
|
|
GstCaps *pcaps;
|
|
GstStructure *config;
|
|
|
|
/* we had a pool, check caps */
|
|
config = gst_buffer_pool_get_config (pool);
|
|
gst_buffer_pool_config_get_params (config, &pcaps, NULL, NULL, NULL);
|
|
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"we had a pool with caps %" GST_PTR_FORMAT, pcaps);
|
|
if (!gst_caps_is_equal (caps, pcaps)) {
|
|
gst_structure_free (config);
|
|
gst_object_unref (pool);
|
|
goto different_caps;
|
|
}
|
|
gst_structure_free (config);
|
|
}
|
|
gst_v4l2_get_driver_min_buffers (obj);
|
|
|
|
min = MAX (obj->min_buffers, GST_V4L2_MIN_BUFFERS (obj));
|
|
|
|
gst_query_add_allocation_pool (query, pool, size, min, max);
|
|
|
|
if (obj->align.padding_top || obj->align.padding_bottom ||
|
|
obj->align.padding_left || obj->align.padding_right) {
|
|
allocation_meta = gst_structure_new_empty ("video-meta");
|
|
gst_buffer_pool_config_set_video_alignment (allocation_meta, &obj->align);
|
|
}
|
|
|
|
/* we also support various metadata */
|
|
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE,
|
|
allocation_meta);
|
|
|
|
if (allocation_meta)
|
|
gst_structure_free (allocation_meta);
|
|
|
|
if (pool)
|
|
gst_object_unref (pool);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
no_caps:
|
|
{
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "no caps specified");
|
|
return FALSE;
|
|
}
|
|
different_caps:
|
|
{
|
|
/* different caps, we can't use this pool */
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "pool has different caps");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_try_import (GstV4l2Object * obj, GstBuffer * buffer)
|
|
{
|
|
GstVideoMeta *vmeta;
|
|
guint n_mem = gst_buffer_n_memory (buffer);
|
|
|
|
/* only import if requested */
|
|
switch (obj->mode) {
|
|
case GST_V4L2_IO_USERPTR:
|
|
case GST_V4L2_IO_DMABUF_IMPORT:
|
|
break;
|
|
default:
|
|
GST_DEBUG_OBJECT (obj->dbg_obj,
|
|
"The io-mode does not enable importation");
|
|
return FALSE;
|
|
}
|
|
|
|
vmeta = gst_buffer_get_video_meta (buffer);
|
|
if (!vmeta && obj->need_video_meta) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "Downstream buffer uses standard "
|
|
"stride/offset while the driver does not.");
|
|
return FALSE;
|
|
}
|
|
|
|
/* we need matching strides/offsets and size */
|
|
if (vmeta) {
|
|
guint plane_height[GST_VIDEO_MAX_PLANES] = { 0, };
|
|
|
|
gst_video_meta_get_plane_height (vmeta, plane_height);
|
|
|
|
if (!gst_v4l2_object_match_buffer_layout (obj, vmeta->n_planes,
|
|
vmeta->offset, vmeta->stride, gst_buffer_get_size (buffer),
|
|
plane_height[0]))
|
|
return FALSE;
|
|
}
|
|
|
|
/* we can always import single memory buffer, but otherwise we need the same
|
|
* amount of memory object. */
|
|
if (n_mem != 1 && n_mem != obj->n_v4l2_planes) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "Can only import %i memory, "
|
|
"buffers contains %u memory", obj->n_v4l2_planes, n_mem);
|
|
return FALSE;
|
|
}
|
|
|
|
/* For DMABuf importation we need DMABuf of course */
|
|
if (obj->mode == GST_V4L2_IO_DMABUF_IMPORT) {
|
|
guint i;
|
|
|
|
for (i = 0; i < n_mem; i++) {
|
|
GstMemory *mem = gst_buffer_peek_memory (buffer, i);
|
|
|
|
if (!gst_is_dmabuf_memory (mem)) {
|
|
GST_DEBUG_OBJECT (obj->dbg_obj, "Cannot import non-DMABuf memory.");
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* for the remaining, only the kernel driver can tell */
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_v4l2_object_get_buffer_pool:
|
|
* @src: a #GstV4l2Object
|
|
*
|
|
* Returns: (nullable) (transfer full): the instance of the #GstBufferPool used
|
|
* by the v4l2object; unref it after usage.
|
|
*/
|
|
GstBufferPool *
|
|
gst_v4l2_object_get_buffer_pool (GstV4l2Object * v4l2object)
|
|
{
|
|
GstBufferPool *ret = NULL;
|
|
|
|
g_return_val_if_fail (v4l2object != NULL, NULL);
|
|
|
|
GST_OBJECT_LOCK (v4l2object->element);
|
|
if (v4l2object->pool)
|
|
ret = gst_object_ref (v4l2object->pool);
|
|
GST_OBJECT_UNLOCK (v4l2object->element);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* gst_v4l2_object_poll:
|
|
* @v4l2object: a #GstV4l2Object
|
|
* @timeout: timeout of type #GstClockTime
|
|
*
|
|
* Poll the video file descriptor for read when this is a capture, write when
|
|
* this is an output. It will also watch for errors and source change events.
|
|
* If a source change event is received, %GST_V4L2_FLOW_RESOLUTION_CHANGE will
|
|
* be returned. If the poll was interrupted, %GST_FLOW_FLUSHING is returned.
|
|
* If there was no read or write indicator, %GST_V4L2_FLOW_LAST_BUFFER is
|
|
* returned. It may also return %GST_FLOW_ERROR if some unexpected error
|
|
* occured.
|
|
*
|
|
* Returns: GST_FLOW_OK if buffers are ready to be queued or dequeued.
|
|
*/
|
|
GstFlowReturn
|
|
gst_v4l2_object_poll (GstV4l2Object * v4l2object, GstClockTime timeout)
|
|
{
|
|
gint ret;
|
|
|
|
if (!v4l2object->can_poll_device) {
|
|
if (timeout != 0)
|
|
goto done;
|
|
else
|
|
goto no_buffers;
|
|
}
|
|
|
|
GST_LOG_OBJECT (v4l2object->dbg_obj, "polling device");
|
|
|
|
again:
|
|
ret = gst_poll_wait (v4l2object->poll, timeout);
|
|
if (G_UNLIKELY (ret < 0)) {
|
|
switch (errno) {
|
|
case EBUSY:
|
|
goto stopped;
|
|
case EAGAIN:
|
|
case EINTR:
|
|
goto again;
|
|
case ENXIO:
|
|
GST_WARNING_OBJECT (v4l2object->dbg_obj,
|
|
"v4l2 device doesn't support polling. Disabling"
|
|
" using libv4l2 in this case may cause deadlocks");
|
|
v4l2object->can_poll_device = FALSE;
|
|
goto done;
|
|
default:
|
|
goto select_error;
|
|
}
|
|
}
|
|
|
|
if (gst_poll_fd_has_error (v4l2object->poll, &v4l2object->pollfd))
|
|
goto select_error;
|
|
|
|
/* PRI is used to signal that events are available */
|
|
if (gst_poll_fd_has_pri (v4l2object->poll, &v4l2object->pollfd)) {
|
|
struct v4l2_event event = { 0, };
|
|
|
|
if (!gst_v4l2_dequeue_event (v4l2object, &event))
|
|
goto dqevent_failed;
|
|
|
|
if (event.type != V4L2_EVENT_SOURCE_CHANGE) {
|
|
GST_INFO_OBJECT (v4l2object->dbg_obj,
|
|
"Received unhandled event, ignoring.");
|
|
goto again;
|
|
}
|
|
|
|
if ((event.u.src_change.changes & V4L2_EVENT_SRC_CH_RESOLUTION) == 0) {
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
|
|
"Received non-resolution source-change, ignoring.");
|
|
goto again;
|
|
}
|
|
|
|
if (v4l2object->formats)
|
|
gst_v4l2_object_clear_format_list (v4l2object);
|
|
|
|
return GST_V4L2_FLOW_RESOLUTION_CHANGE;
|
|
}
|
|
|
|
if (ret == 0)
|
|
goto no_buffers;
|
|
|
|
done:
|
|
return GST_FLOW_OK;
|
|
|
|
/* ERRORS */
|
|
stopped:
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "stop called");
|
|
return GST_FLOW_FLUSHING;
|
|
}
|
|
select_error:
|
|
{
|
|
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ, (NULL),
|
|
("poll error %d: %s (%d)", ret, g_strerror (errno), errno));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
no_buffers:
|
|
{
|
|
return GST_V4L2_FLOW_LAST_BUFFER;
|
|
}
|
|
dqevent_failed:
|
|
{
|
|
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ, (NULL),
|
|
("dqevent error: %s (%d)", g_strerror (errno), errno));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_v4l2_object_subscribe_event:
|
|
* @v4l2object: a #GstV4l2Object
|
|
* @event: the event ID
|
|
*
|
|
* Subscribe to an event, and enable polling for these. Note that only
|
|
* %V4L2_EVENT_SOURCE_CHANGE is currently supported by the poll helper.
|
|
*
|
|
* Returns: %TRUE if the driver supports this event
|
|
*/
|
|
gboolean
|
|
gst_v4l2_object_subscribe_event (GstV4l2Object * v4l2object, guint32 event)
|
|
{
|
|
guint32 id = 0;
|
|
|
|
g_return_val_if_fail (v4l2object != NULL, FALSE);
|
|
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
|
|
|
|
v4l2object->get_in_out_func (v4l2object, &id);
|
|
|
|
if (gst_v4l2_subscribe_event (v4l2object, event, id)) {
|
|
gst_poll_fd_ctl_pri (v4l2object->poll, &v4l2object->pollfd, TRUE);
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|