mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-30 04:00:37 +00:00
e45b1fd9e6
this fixes a leak of the config structure and take care of making sure caps can't reach ref 0 before we are done doing our check. CID 1212144
3379 lines
101 KiB
C
3379 lines
101 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@indt.org.br>
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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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/* FIXME 0.11: suppress warnings for deprecated API such as GValueArray
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* with newer GLib versions (>= 2.31.0) */
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#define GLIB_DISABLE_DEPRECATION_WARNINGS
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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 <unistd.h>
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#include <string.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 "v4l2_calls.h"
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#include "gstv4l2tuner.h"
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#include "gstv4l2colorbalance.h"
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#include "gst/gst-i18n-plugin.h"
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#include <gst/video/video.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_CHANNEL NULL
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#define DEFAULT_PROP_FREQUENCY 0
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#define DEFAULT_PROP_IO_MODE GST_V4L2_IO_AUTO
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#define ENCODED_BUFFER_SIZE (1 * 1024 * 1024)
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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_RAW = 1 << 0,
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GST_V4L2_CODEC = 1 << 1,
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GST_V4L2_TRANSPORT = 1 << 2,
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GST_V4L2_NO_PARSE = 1 << 3,
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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 format;
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gboolean dimensions;
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GstV4L2FormatFlags flags;
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} GstV4L2FormatDesc;
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static const GstV4L2FormatDesc gst_v4l2_formats[] = {
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/* from Linux 2.6.15 videodev2.h */
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{V4L2_PIX_FMT_RGB332, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB555, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB565, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB555X, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB565X, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_BGR24, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB24, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_BGR32, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB32, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_GREY, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YVU410, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YVU420, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YUYV, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_UYVY, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YUV422P, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YUV411P, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_Y41P, TRUE, GST_V4L2_RAW},
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/* two planes -- one Y, one Cr + Cb interleaved */
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{V4L2_PIX_FMT_NV12, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_NV12M, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_NV12MT, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_NV21, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_NV21M, TRUE, GST_V4L2_RAW},
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/* The following formats are not defined in the V4L2 specification */
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{V4L2_PIX_FMT_YUV410, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YUV420, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YYUV, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_HI240, TRUE, GST_V4L2_RAW},
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/* see http://www.siliconimaging.com/RGB%20Bayer.htm */
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{V4L2_PIX_FMT_SBGGR8, TRUE, GST_V4L2_CODEC},
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/* compressed formats */
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{V4L2_PIX_FMT_MJPEG, FALSE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_JPEG, FALSE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_PJPG, FALSE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_DV, FALSE, GST_V4L2_TRANSPORT},
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{V4L2_PIX_FMT_MPEG, FALSE, GST_V4L2_TRANSPORT},
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{V4L2_PIX_FMT_MPEG1, FALSE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_MPEG2, FALSE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_MPEG4, FALSE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_H263, FALSE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_H264, FALSE, GST_V4L2_CODEC},
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/* VP8 not parseable */
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{V4L2_PIX_FMT_VP8, FALSE, GST_V4L2_CODEC | GST_V4L2_NO_PARSE},
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/* Vendor-specific formats */
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{V4L2_PIX_FMT_WNVA, TRUE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_SN9C10X, TRUE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_PWC1, TRUE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_PWC2, TRUE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_YVYU, TRUE, GST_V4L2_RAW},
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};
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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
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gst_v4l2_object_install_properties_helper (GObjectClass * gobject_class,
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const char *default_device)
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{
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g_object_class_install_property (gobject_class, PROP_DEVICE,
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g_param_spec_string ("device", "Device", "Device location",
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default_device, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
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g_param_spec_string ("device-name", "Device name",
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"Name of the device", DEFAULT_PROP_DEVICE_NAME,
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G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
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g_param_spec_int ("device-fd", "File descriptor",
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"File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
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G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_FLAGS,
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g_param_spec_flags ("flags", "Flags", "Device type flags",
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GST_TYPE_V4L2_DEVICE_FLAGS, DEFAULT_PROP_FLAGS,
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G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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/**
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* GstV4l2Src:brightness:
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*
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* Picture brightness, or more precisely, the black level
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*/
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g_object_class_install_property (gobject_class, PROP_BRIGHTNESS,
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g_param_spec_int ("brightness", "Brightness",
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"Picture brightness, or more precisely, the black level", G_MININT,
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G_MAXINT, 0,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
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/**
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* GstV4l2Src:contrast:
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*
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* Picture contrast or luma gain
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*/
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g_object_class_install_property (gobject_class, PROP_CONTRAST,
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g_param_spec_int ("contrast", "Contrast",
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"Picture contrast or luma gain", G_MININT,
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G_MAXINT, 0,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
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/**
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* GstV4l2Src:saturation:
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*
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* Picture color saturation or chroma gain
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*/
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g_object_class_install_property (gobject_class, PROP_SATURATION,
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g_param_spec_int ("saturation", "Saturation",
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"Picture color saturation or chroma gain", G_MININT,
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G_MAXINT, 0,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
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/**
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* GstV4l2Src:hue:
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*
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* Hue or color balance
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*/
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g_object_class_install_property (gobject_class, PROP_HUE,
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g_param_spec_int ("hue", "Hue",
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"Hue or color balance", G_MININT,
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G_MAXINT, 0,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
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/**
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* GstV4l2Src:norm:
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*
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* TV norm
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*/
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g_object_class_install_property (gobject_class, PROP_TV_NORM,
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g_param_spec_enum ("norm", "TV norm",
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"video standard",
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GST_TYPE_V4L2_TV_NORM, DEFAULT_PROP_TV_NORM,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstV4l2Src:io-mode:
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*
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* IO Mode
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*/
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g_object_class_install_property (gobject_class, PROP_IO_MODE,
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g_param_spec_enum ("io-mode", "IO mode",
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"I/O mode",
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GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstV4l2Src:extra-controls:
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*
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* Additional v4l2 controls for the device. The controls are identified
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* by the control name (lowercase with '_' for any non-alphanumeric
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* characters).
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*
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* Since: 1.2
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*/
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g_object_class_install_property (gobject_class, PROP_EXTRA_CONTROLS,
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g_param_spec_boxed ("extra-controls", "Extra Controls",
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"Extra v4l2 controls (CIDs) for the device",
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GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstV4l2Src:pixel-aspect-ratio:
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*
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* The pixel aspect ratio of the device. This overwrites the pixel aspect
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* ratio queried from the device.
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*
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* Since: 1.2
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*/
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g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO,
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g_param_spec_string ("pixel-aspect-ratio", "Pixel Aspect Ratio",
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"Overwrite the pixel aspect ratio of the device", "1/1",
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstV4l2Src:force-aspect-ratio:
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*
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* When enabled, the pixel aspect ratio queried from the device or set
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* with the pixel-aspect-ratio property will be enforced.
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*
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* Since: 1.2
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*/
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g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
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g_param_spec_boolean ("force-aspect-ratio", "Force aspect ratio",
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"When enabled, the pixel aspect ratio will be enforced", TRUE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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GstV4l2Object *
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gst_v4l2_object_new (GstElement * element,
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enum v4l2_buf_type type,
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const char *default_device,
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GstV4l2GetInOutFunction get_in_out_func,
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GstV4l2SetInOutFunction set_in_out_func,
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GstV4l2UpdateFpsFunction update_fps_func)
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{
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GstV4l2Object *v4l2object;
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/*
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* some default values
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*/
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v4l2object = g_new0 (GstV4l2Object, 1);
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v4l2object->type = type;
|
|
v4l2object->formats = NULL;
|
|
|
|
v4l2object->element = element;
|
|
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->poll = gst_poll_new (TRUE);
|
|
v4l2object->active = FALSE;
|
|
v4l2object->videodev = g_strdup (default_device);
|
|
|
|
v4l2object->norms = NULL;
|
|
v4l2object->channels = NULL;
|
|
v4l2object->colors = NULL;
|
|
|
|
v4l2object->xwindow_id = 0;
|
|
|
|
v4l2object->keep_aspect = TRUE;
|
|
|
|
v4l2object->n_v4l2_planes = 0;
|
|
|
|
v4l2object->no_initial_format = FALSE;
|
|
|
|
return v4l2object;
|
|
}
|
|
|
|
static gboolean gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object);
|
|
|
|
|
|
void
|
|
gst_v4l2_object_destroy (GstV4l2Object * v4l2object)
|
|
{
|
|
g_return_if_fail (v4l2object != NULL);
|
|
|
|
if (v4l2object->videodev)
|
|
g_free (v4l2object->videodev);
|
|
|
|
if (v4l2object->poll)
|
|
gst_poll_free (v4l2object->poll);
|
|
|
|
if (v4l2object->channel)
|
|
g_free (v4l2object->channel);
|
|
|
|
if (v4l2object->formats) {
|
|
gst_v4l2_object_clear_format_list (v4l2object);
|
|
}
|
|
|
|
if (v4l2object->probed_caps) {
|
|
gst_caps_unref (v4l2object->probed_caps);
|
|
}
|
|
|
|
g_free (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;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
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_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:
|
|
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->element, "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 *new = NULL;
|
|
|
|
if (GST_V4L2_IS_OPEN (v4l2object)) {
|
|
new = v4l2object->vcap.card;
|
|
} else if (gst_v4l2_open (v4l2object)) {
|
|
new = v4l2object->vcap.card;
|
|
gst_v4l2_close (v4l2object);
|
|
}
|
|
g_value_set_string (value, (gchar *) new);
|
|
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->vcap.capabilities &
|
|
(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->vcap.capabilities & V4L2_CAP_VIDEO_CAPTURE_MPLANE)
|
|
flags |= V4L2_CAP_VIDEO_CAPTURE;
|
|
|
|
if (v4l2object->vcap.capabilities & 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_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_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->element, "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 {
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_open (GstV4l2Object * v4l2object)
|
|
{
|
|
if (gst_v4l2_open (v4l2object))
|
|
gst_v4l2_set_defaults (v4l2object);
|
|
else
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_open_shared (GstV4l2Object * v4l2object, GstV4l2Object * other)
|
|
{
|
|
gboolean ret;
|
|
|
|
ret = gst_v4l2_dup (v4l2object, other);
|
|
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_close (GstV4l2Object * v4l2object)
|
|
{
|
|
if (!gst_v4l2_close (v4l2object))
|
|
return FALSE;
|
|
|
|
gst_caps_replace (&v4l2object->probed_caps, NULL);
|
|
|
|
if (v4l2object->formats) {
|
|
gst_v4l2_object_clear_format_list (v4l2object);
|
|
}
|
|
|
|
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_RGB555:
|
|
case V4L2_PIX_FMT_RGB555X:
|
|
case V4L2_PIX_FMT_RGB565:
|
|
case V4L2_PIX_FMT_RGB565X:
|
|
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:
|
|
rank = RGB_BASE_RANK;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
|
|
rank = GREY_BASE_RANK;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_NV12: /* 12 Y/CbCr 4:2:0 */
|
|
case V4L2_PIX_FMT_NV12M: /* Same as NV12 */
|
|
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 */
|
|
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 */
|
|
rank = YUV_BASE_RANK + 7;
|
|
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 */
|
|
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_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 */
|
|
rank = YUV_BASE_RANK + 8;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_DV:
|
|
rank = DV_BASE_RANK;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_WNVA: /* Winnov hw compres */
|
|
rank = 0;
|
|
break;
|
|
|
|
case V4L2_PIX_FMT_SBGGR8:
|
|
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->element, "getting src format enumerations");
|
|
|
|
/* format enumeration */
|
|
for (n = 0;; n++) {
|
|
format = g_new0 (struct v4l2_fmtdesc, 1);
|
|
|
|
format->index = n;
|
|
format->type = type;
|
|
|
|
if (v4l2_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->element, "index: %u", format->index);
|
|
GST_LOG_OBJECT (v4l2object->element, "type: %d", format->type);
|
|
GST_LOG_OBJECT (v4l2object->element, "flags: %08x", format->flags);
|
|
GST_LOG_OBJECT (v4l2object->element, "description: '%s'",
|
|
format->description);
|
|
GST_LOG_OBJECT (v4l2object->element, "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->element, "got %d format(s):", n);
|
|
for (l = v4l2object->formats; l != NULL; l = l->next) {
|
|
format = l->data;
|
|
|
|
GST_INFO_OBJECT (v4l2object->element,
|
|
" %" GST_FOURCC_FORMAT "%s", GST_FOURCC_ARGS (format->pixelformat),
|
|
((format->flags & V4L2_FMT_FLAG_EMULATED)) ? " (emulated)" : "");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
failed:
|
|
{
|
|
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)));
|
|
g_free (format);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get the list of supported capture formats, a list of
|
|
* <code>struct v4l2_fmtdesc</code>.
|
|
*/
|
|
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 GstVideoFormat
|
|
gst_v4l2_object_v4l2fourcc_to_video_format (guint32 fourcc)
|
|
{
|
|
GstVideoFormat format;
|
|
|
|
switch (fourcc) {
|
|
case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
|
|
format = GST_VIDEO_FORMAT_GRAY8;
|
|
break;
|
|
case V4L2_PIX_FMT_RGB555:
|
|
format = GST_VIDEO_FORMAT_RGB15;
|
|
break;
|
|
case V4L2_PIX_FMT_RGB565:
|
|
format = GST_VIDEO_FORMAT_RGB16;
|
|
break;
|
|
case V4L2_PIX_FMT_RGB24:
|
|
format = GST_VIDEO_FORMAT_RGB;
|
|
break;
|
|
case V4L2_PIX_FMT_BGR24:
|
|
format = GST_VIDEO_FORMAT_BGR;
|
|
break;
|
|
case V4L2_PIX_FMT_RGB32:
|
|
format = GST_VIDEO_FORMAT_xRGB;
|
|
break;
|
|
case V4L2_PIX_FMT_BGR32:
|
|
format = GST_VIDEO_FORMAT_BGRx;
|
|
break;
|
|
case V4L2_PIX_FMT_NV12:
|
|
case V4L2_PIX_FMT_NV12M:
|
|
format = GST_VIDEO_FORMAT_NV12;
|
|
break;
|
|
case V4L2_PIX_FMT_NV12MT:
|
|
format = GST_VIDEO_FORMAT_NV12_64Z32;
|
|
break;
|
|
case V4L2_PIX_FMT_NV21:
|
|
case V4L2_PIX_FMT_NV21M:
|
|
format = GST_VIDEO_FORMAT_NV21;
|
|
break;
|
|
case V4L2_PIX_FMT_YVU410:
|
|
format = GST_VIDEO_FORMAT_YVU9;
|
|
break;
|
|
case V4L2_PIX_FMT_YUV410:
|
|
format = GST_VIDEO_FORMAT_YUV9;
|
|
break;
|
|
case V4L2_PIX_FMT_YUV420:
|
|
format = GST_VIDEO_FORMAT_I420;
|
|
break;
|
|
case V4L2_PIX_FMT_YUYV:
|
|
format = GST_VIDEO_FORMAT_YUY2;
|
|
break;
|
|
case V4L2_PIX_FMT_YVU420:
|
|
format = GST_VIDEO_FORMAT_YV12;
|
|
break;
|
|
case V4L2_PIX_FMT_UYVY:
|
|
format = GST_VIDEO_FORMAT_UYVY;
|
|
break;
|
|
#if 0
|
|
case V4L2_PIX_FMT_Y41P:
|
|
format = GST_VIDEO_FORMAT_Y41P;
|
|
break;
|
|
#endif
|
|
case V4L2_PIX_FMT_YUV411P:
|
|
format = GST_VIDEO_FORMAT_Y41B;
|
|
break;
|
|
case V4L2_PIX_FMT_YUV422P:
|
|
format = GST_VIDEO_FORMAT_Y42B;
|
|
break;
|
|
case V4L2_PIX_FMT_YVYU:
|
|
format = GST_VIDEO_FORMAT_YVYU;
|
|
break;
|
|
default:
|
|
format = GST_VIDEO_FORMAT_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
return format;
|
|
}
|
|
|
|
static GstStructure *
|
|
gst_v4l2_object_v4l2fourcc_to_bare_struct (guint32 fourcc)
|
|
{
|
|
GstStructure *structure = 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_empty ("image/jpeg");
|
|
break;
|
|
case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
|
|
case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
|
|
/* FIXME: get correct fourccs here */
|
|
break;
|
|
case V4L2_PIX_FMT_MPEG1:
|
|
structure = gst_structure_new ("video/mpeg",
|
|
"mpegversion", G_TYPE_INT, 2, 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:
|
|
structure = gst_structure_new ("video/mpeg",
|
|
"mpegversion", G_TYPE_INT, 4, "systemstream",
|
|
G_TYPE_BOOLEAN, FALSE, NULL);
|
|
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_VP8:
|
|
structure = gst_structure_new_empty ("video/x-vp8");
|
|
break;
|
|
case V4L2_PIX_FMT_RGB332:
|
|
case V4L2_PIX_FMT_RGB555X:
|
|
case V4L2_PIX_FMT_RGB565X:
|
|
/* FIXME: get correct fourccs here */
|
|
break;
|
|
case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
|
|
case V4L2_PIX_FMT_RGB555:
|
|
case V4L2_PIX_FMT_RGB565:
|
|
case V4L2_PIX_FMT_RGB24:
|
|
case V4L2_PIX_FMT_BGR24:
|
|
case V4L2_PIX_FMT_RGB32:
|
|
case V4L2_PIX_FMT_BGR32:
|
|
case V4L2_PIX_FMT_NV12: /* 12 Y/CbCr 4:2:0 */
|
|
case V4L2_PIX_FMT_NV12M:
|
|
case V4L2_PIX_FMT_NV12MT:
|
|
case V4L2_PIX_FMT_NV21: /* 12 Y/CrCb 4:2:0 */
|
|
case V4L2_PIX_FMT_NV21M:
|
|
case V4L2_PIX_FMT_YVU410:
|
|
case V4L2_PIX_FMT_YUV410:
|
|
case V4L2_PIX_FMT_YUV420: /* I420/IYUV */
|
|
case V4L2_PIX_FMT_YUYV:
|
|
case V4L2_PIX_FMT_YVU420:
|
|
case V4L2_PIX_FMT_UYVY:
|
|
#if 0
|
|
case V4L2_PIX_FMT_Y41P:
|
|
#endif
|
|
case V4L2_PIX_FMT_YUV422P:
|
|
case V4L2_PIX_FMT_YVYU:
|
|
case V4L2_PIX_FMT_YUV411P:{
|
|
GstVideoFormat format;
|
|
format = gst_v4l2_object_v4l2fourcc_to_video_format (fourcc);
|
|
if (format != GST_VIDEO_FORMAT_UNKNOWN)
|
|
structure = gst_structure_new ("video/x-raw",
|
|
"format", G_TYPE_STRING, gst_video_format_to_string (format), NULL);
|
|
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 compres */
|
|
break;
|
|
case V4L2_PIX_FMT_SBGGR8:
|
|
structure = gst_structure_new_empty ("video/x-bayer");
|
|
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:
|
|
GST_DEBUG ("Unknown fourcc 0x%08x %" GST_FOURCC_FORMAT,
|
|
fourcc, GST_FOURCC_ARGS (fourcc));
|
|
break;
|
|
}
|
|
|
|
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].format != fourcc)
|
|
continue;
|
|
|
|
if (gst_v4l2_formats[i].dimensions) {
|
|
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, 100, 1, NULL);
|
|
}
|
|
break;
|
|
}
|
|
|
|
done:
|
|
return template;
|
|
}
|
|
|
|
|
|
static GstCaps *
|
|
gst_v4l2_object_get_caps_helper (GstV4L2FormatFlags flags)
|
|
{
|
|
GstStructure *structure;
|
|
GstCaps *caps;
|
|
guint i;
|
|
|
|
caps = gst_caps_new_empty ();
|
|
for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
|
|
|
|
if ((gst_v4l2_formats[i].flags & flags) == 0)
|
|
continue;
|
|
|
|
structure =
|
|
gst_v4l2_object_v4l2fourcc_to_bare_struct (gst_v4l2_formats[i].format);
|
|
|
|
if (structure) {
|
|
GstStructure *alt_s = NULL;
|
|
|
|
if (gst_v4l2_formats[i].dimensions) {
|
|
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, 100, 1, NULL);
|
|
}
|
|
|
|
switch (gst_v4l2_formats[i].format) {
|
|
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);
|
|
}
|
|
}
|
|
|
|
return gst_caps_simplify (caps);
|
|
}
|
|
|
|
GstCaps *
|
|
gst_v4l2_object_get_all_caps (void)
|
|
{
|
|
static GstCaps *caps = NULL;
|
|
|
|
if (caps == NULL)
|
|
caps = gst_v4l2_object_get_caps_helper (GST_V4L2_ALL);
|
|
|
|
return gst_caps_ref (caps);
|
|
}
|
|
|
|
GstCaps *
|
|
gst_v4l2_object_get_raw_caps (void)
|
|
{
|
|
static GstCaps *caps = NULL;
|
|
|
|
if (caps == NULL)
|
|
caps = gst_v4l2_object_get_caps_helper (GST_V4L2_RAW);
|
|
|
|
return gst_caps_ref (caps);
|
|
}
|
|
|
|
GstCaps *
|
|
gst_v4l2_object_get_codec_caps (void)
|
|
{
|
|
static GstCaps *caps = NULL;
|
|
|
|
if (caps == NULL)
|
|
caps = gst_v4l2_object_get_caps_helper (GST_V4L2_CODEC);
|
|
|
|
return gst_caps_ref (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")) {
|
|
switch (GST_VIDEO_INFO_FORMAT (info)) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
fourcc = V4L2_PIX_FMT_YUV420;
|
|
break;
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
fourcc = V4L2_PIX_FMT_YUYV;
|
|
break;
|
|
#if 0
|
|
case GST_VIDEO_FORMAT_Y41P:
|
|
fourcc = V4L2_PIX_FMT_Y41P;
|
|
break;
|
|
#endif
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
fourcc = V4L2_PIX_FMT_UYVY;
|
|
break;
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
fourcc = V4L2_PIX_FMT_YVU420;
|
|
break;
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
fourcc = V4L2_PIX_FMT_YUV411P;
|
|
break;
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
fourcc = V4L2_PIX_FMT_YUV422P;
|
|
break;
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
fourcc = V4L2_PIX_FMT_NV12;
|
|
fourcc_nc = V4L2_PIX_FMT_NV12M;
|
|
break;
|
|
case GST_VIDEO_FORMAT_NV12_64Z32:
|
|
fourcc_nc = V4L2_PIX_FMT_NV12MT;
|
|
break;
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
fourcc = V4L2_PIX_FMT_NV21;
|
|
fourcc_nc = V4L2_PIX_FMT_NV21M;
|
|
break;
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
fourcc = V4L2_PIX_FMT_YVYU;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
fourcc = V4L2_PIX_FMT_RGB555;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
fourcc = V4L2_PIX_FMT_RGB565;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
fourcc = V4L2_PIX_FMT_RGB24;
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
fourcc = V4L2_PIX_FMT_BGR24;
|
|
break;
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
fourcc = V4L2_PIX_FMT_RGB32;
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
fourcc = V4L2_PIX_FMT_BGR32;
|
|
break;
|
|
case GST_VIDEO_FORMAT_GRAY8:
|
|
fourcc = V4L2_PIX_FMT_GREY;
|
|
default:
|
|
break;
|
|
}
|
|
} 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;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
} else if (g_str_equal (mimetype, "video/x-h263")) {
|
|
fourcc = V4L2_PIX_FMT_H263;
|
|
} else if (g_str_equal (mimetype, "video/x-h264")) {
|
|
fourcc = V4L2_PIX_FMT_H264;
|
|
} else if (g_str_equal (mimetype, "video/x-vp8")) {
|
|
fourcc = V4L2_PIX_FMT_VP8;
|
|
} else if (g_str_equal (mimetype, "video/x-bayer")) {
|
|
fourcc = V4L2_PIX_FMT_SBGGR8;
|
|
} 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, "invalid format");
|
|
return FALSE;
|
|
}
|
|
unhandled_format:
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object, "unhandled format");
|
|
return FALSE;
|
|
}
|
|
unsupported_format:
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object, "unsupported format");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_get_nearest_size (GstV4l2Object * v4l2object,
|
|
guint32 pixelformat, gint * width, gint * height, gboolean * interlaced);
|
|
|
|
static void
|
|
gst_v4l2_object_add_aspect_ratio (GstV4l2Object * v4l2object, GstStructure * s)
|
|
{
|
|
struct v4l2_cropcap cropcap;
|
|
int num = 1, den = 1;
|
|
|
|
if (!v4l2object->keep_aspect)
|
|
return;
|
|
|
|
if (v4l2object->par) {
|
|
num = gst_value_get_fraction_numerator (v4l2object->par);
|
|
den = gst_value_get_fraction_denominator (v4l2object->par);
|
|
goto done;
|
|
}
|
|
|
|
memset (&cropcap, 0, sizeof (cropcap));
|
|
|
|
cropcap.type = v4l2object->type;
|
|
if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_CROPCAP, &cropcap) < 0)
|
|
goto cropcap_failed;
|
|
|
|
num = cropcap.pixelaspect.numerator;
|
|
den = cropcap.pixelaspect.denominator;
|
|
|
|
/* Ignore PAR that are 0/0 */
|
|
if (den == 0)
|
|
return;
|
|
|
|
done:
|
|
gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION, num, den,
|
|
NULL);
|
|
return;
|
|
|
|
cropcap_failed:
|
|
if (errno != ENOTTY)
|
|
GST_WARNING_OBJECT (v4l2object->element,
|
|
"Failed to probe pixel aspect ratio with VIDIOC_CROPCAP: %s",
|
|
g_strerror (errno));
|
|
goto done;
|
|
}
|
|
|
|
|
|
/* 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, };
|
|
gboolean interlaced;
|
|
gint int_width = width;
|
|
gint int_height = height;
|
|
|
|
if (v4l2object->never_interlaced) {
|
|
interlaced = FALSE;
|
|
} else {
|
|
/* Interlaced detection using VIDIOC_TRY/S_FMT */
|
|
if (!gst_v4l2_object_get_nearest_size (v4l2object, pixelformat,
|
|
&int_width, &int_height, &interlaced))
|
|
return NULL;
|
|
}
|
|
|
|
memset (&ival, 0, sizeof (struct v4l2_frmivalenum));
|
|
ival.index = 0;
|
|
ival.pixel_format = pixelformat;
|
|
ival.width = width;
|
|
ival.height = height;
|
|
|
|
GST_LOG_OBJECT (v4l2object->element,
|
|
"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 (v4l2_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->element, "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 (v4l2_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->element, "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->element, "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->element, "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->element, "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->element, "could not step fraction!");
|
|
break;
|
|
}
|
|
}
|
|
if (!added) {
|
|
/* no range was added, leave the default range from the template */
|
|
GST_WARNING_OBJECT (v4l2object->element,
|
|
"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->element,
|
|
"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 (g_str_equal (gst_structure_get_name (s), "video/x-raw"))
|
|
gst_structure_set (s, "interlace-mode", G_TYPE_STRING,
|
|
(interlaced ? "mixed" : "progressive"), NULL);
|
|
|
|
if (G_IS_VALUE (&rates)) {
|
|
/* only change the framerate on the template when we have a valid probed new
|
|
* value */
|
|
gst_structure_set_value (s, "framerate", &rates);
|
|
g_value_unset (&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, 100, 1,
|
|
NULL);
|
|
}
|
|
return s;
|
|
|
|
/* ERRORS */
|
|
enum_frameintervals_failed:
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object->element,
|
|
"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->element,
|
|
"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
|
|
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].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;
|
|
}
|
|
}
|
|
|
|
gst_caps_append_structure (caps, s);
|
|
|
|
if (alt_s)
|
|
gst_caps_append_structure (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->element,
|
|
"Enumerating frame sizes for %" GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (pixelformat));
|
|
|
|
if (v4l2_ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) < 0)
|
|
goto enum_framesizes_failed;
|
|
|
|
if (size.type == V4L2_FRMSIZE_TYPE_DISCRETE) {
|
|
do {
|
|
GST_LOG_OBJECT (v4l2object->element, "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);
|
|
}
|
|
|
|
size.index++;
|
|
} while (v4l2_ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) >= 0);
|
|
GST_DEBUG_OBJECT (v4l2object->element,
|
|
"done iterating discrete frame sizes");
|
|
} else if (size.type == V4L2_FRMSIZE_TYPE_STEPWISE) {
|
|
GST_DEBUG_OBJECT (v4l2object->element, "we have stepwise frame sizes:");
|
|
GST_DEBUG_OBJECT (v4l2object->element, "min width: %d",
|
|
size.stepwise.min_width);
|
|
GST_DEBUG_OBJECT (v4l2object->element, "min height: %d",
|
|
size.stepwise.min_height);
|
|
GST_DEBUG_OBJECT (v4l2object->element, "max width: %d",
|
|
size.stepwise.max_width);
|
|
GST_DEBUG_OBJECT (v4l2object->element, "min height: %d",
|
|
size.stepwise.max_height);
|
|
GST_DEBUG_OBJECT (v4l2object->element, "step width: %d",
|
|
size.stepwise.step_width);
|
|
GST_DEBUG_OBJECT (v4l2object->element, "step height: %d",
|
|
size.stepwise.step_height);
|
|
|
|
for (w = size.stepwise.min_width, h = size.stepwise.min_height;
|
|
w <= size.stepwise.max_width && h <= size.stepwise.max_height;
|
|
w += size.stepwise.step_width, h += size.stepwise.step_height) {
|
|
if (w == 0 || h == 0)
|
|
continue;
|
|
|
|
tmp =
|
|
gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
|
|
pixelformat, w, h, template);
|
|
|
|
if (tmp)
|
|
results = g_list_prepend (results, tmp);
|
|
}
|
|
GST_DEBUG_OBJECT (v4l2object->element,
|
|
"done iterating stepwise frame sizes");
|
|
} else if (size.type == V4L2_FRMSIZE_TYPE_CONTINUOUS) {
|
|
guint32 maxw, maxh;
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->element, "we have continuous frame sizes:");
|
|
GST_DEBUG_OBJECT (v4l2object->element, "min width: %d",
|
|
size.stepwise.min_width);
|
|
GST_DEBUG_OBJECT (v4l2object->element, "min height: %d",
|
|
size.stepwise.min_height);
|
|
GST_DEBUG_OBJECT (v4l2object->element, "max width: %d",
|
|
size.stepwise.max_width);
|
|
GST_DEBUG_OBJECT (v4l2object->element, "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);
|
|
}
|
|
} 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->element,
|
|
"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->element,
|
|
"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->element,
|
|
"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;
|
|
gboolean interlaced;
|
|
|
|
/* 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, &interlaced)) {
|
|
GST_WARNING_OBJECT (v4l2object->element,
|
|
"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, &interlaced)) {
|
|
GST_WARNING_OBJECT (v4l2object->element,
|
|
"Could not probe maximum capture size for pixelformat %"
|
|
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (pixelformat));
|
|
}
|
|
|
|
/* 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,
|
|
100, 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);
|
|
|
|
if (g_str_equal (gst_structure_get_name (tmp), "video/x-raw"))
|
|
gst_structure_set (tmp, "interlace-mode", G_TYPE_STRING,
|
|
(interlaced ? "mixed" : "progressive"), NULL);
|
|
gst_v4l2_object_add_aspect_ratio (v4l2object, tmp);
|
|
|
|
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, gboolean * interlaced)
|
|
{
|
|
struct v4l2_format fmt, prevfmt;
|
|
int fd;
|
|
int r;
|
|
int prevfmt_valid = FALSE;
|
|
gboolean ret = FALSE;
|
|
|
|
g_return_val_if_fail (width != NULL, FALSE);
|
|
g_return_val_if_fail (height != NULL, FALSE);
|
|
|
|
GST_LOG_OBJECT (v4l2object->element,
|
|
"getting nearest size to %dx%d with format %" GST_FOURCC_FORMAT,
|
|
*width, *height, GST_FOURCC_ARGS (pixelformat));
|
|
|
|
fd = v4l2object->video_fd;
|
|
|
|
memset (&fmt, 0, sizeof (struct v4l2_format));
|
|
memset (&prevfmt, 0, sizeof (struct v4l2_format));
|
|
|
|
/* Some drivers are buggy and will modify the currently set format
|
|
when processing VIDIOC_TRY_FMT, so we remember what is set at the
|
|
minute, and will reset it when done. */
|
|
if (!v4l2object->no_initial_format) {
|
|
prevfmt.type = v4l2object->type;
|
|
prevfmt_valid = (v4l2_ioctl (fd, VIDIOC_G_FMT, &prevfmt) >= 0);
|
|
}
|
|
|
|
/* 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_NONE;
|
|
|
|
r = v4l2_ioctl (fd, VIDIOC_TRY_FMT, &fmt);
|
|
if (r < 0 && errno == EINVAL) {
|
|
/* try again with interlaced video */
|
|
fmt.fmt.pix.width = *width;
|
|
fmt.fmt.pix.height = *height;
|
|
fmt.fmt.pix.pixelformat = pixelformat;
|
|
fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
|
|
r = v4l2_ioctl (fd, VIDIOC_TRY_FMT, &fmt);
|
|
}
|
|
|
|
if (r < 0) {
|
|
/* The driver might not implement TRY_FMT, in which case we will try
|
|
S_FMT to probe */
|
|
if (errno != ENOTTY)
|
|
goto error;
|
|
|
|
/* Only try S_FMT if we're not actively capturing yet, which we shouldn't
|
|
be, because we're still probing */
|
|
if (GST_V4L2_IS_ACTIVE (v4l2object))
|
|
goto error;
|
|
|
|
GST_LOG_OBJECT (v4l2object->element,
|
|
"Failed to probe size limit with VIDIOC_TRY_FMT, trying VIDIOC_S_FMT");
|
|
|
|
fmt.fmt.pix.width = *width;
|
|
fmt.fmt.pix.height = *height;
|
|
|
|
r = v4l2_ioctl (fd, VIDIOC_S_FMT, &fmt);
|
|
if (r < 0 && errno == EINVAL) {
|
|
/* try again with progressive video */
|
|
fmt.fmt.pix.width = *width;
|
|
fmt.fmt.pix.height = *height;
|
|
fmt.fmt.pix.pixelformat = pixelformat;
|
|
fmt.fmt.pix.field = V4L2_FIELD_NONE;
|
|
r = v4l2_ioctl (fd, VIDIOC_S_FMT, &fmt);
|
|
}
|
|
|
|
if (r < 0)
|
|
goto error;
|
|
}
|
|
|
|
GST_LOG_OBJECT (v4l2object->element,
|
|
"got nearest size %dx%d", fmt.fmt.pix.width, fmt.fmt.pix.height);
|
|
|
|
*width = fmt.fmt.pix.width;
|
|
*height = fmt.fmt.pix.height;
|
|
|
|
switch (fmt.fmt.pix.field) {
|
|
case V4L2_FIELD_ANY:
|
|
case V4L2_FIELD_NONE:
|
|
*interlaced = FALSE;
|
|
break;
|
|
case V4L2_FIELD_INTERLACED:
|
|
case V4L2_FIELD_INTERLACED_TB:
|
|
case V4L2_FIELD_INTERLACED_BT:
|
|
*interlaced = TRUE;
|
|
break;
|
|
default:
|
|
GST_WARNING_OBJECT (v4l2object->element,
|
|
"Unsupported field type for %" GST_FOURCC_FORMAT "@%ux%u",
|
|
GST_FOURCC_ARGS (pixelformat), *width, *height);
|
|
goto error;
|
|
}
|
|
|
|
ret = TRUE;
|
|
|
|
error:
|
|
if (!ret) {
|
|
GST_WARNING_OBJECT (v4l2object->element,
|
|
"Unable to try format: %s", g_strerror (errno));
|
|
}
|
|
if (prevfmt_valid)
|
|
if (v4l2_ioctl (fd, VIDIOC_S_FMT, &prevfmt) < 0) {
|
|
GST_WARNING_OBJECT (v4l2object->element,
|
|
"Unable to restore format after trying format: %s",
|
|
g_strerror (errno));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_object_setup_pool (GstV4l2Object * v4l2object, GstCaps * caps)
|
|
{
|
|
GstV4l2IOMode mode;
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->element, "initializing the capture system");
|
|
|
|
GST_V4L2_CHECK_OPEN (v4l2object);
|
|
GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
|
|
|
|
/* find transport */
|
|
mode = v4l2object->req_mode;
|
|
|
|
if (v4l2object->vcap.capabilities & 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->vcap.capabilities & V4L2_CAP_STREAMING) {
|
|
if (v4l2object->req_mode == GST_V4L2_IO_AUTO)
|
|
mode = GST_V4L2_IO_MMAP;
|
|
} else if (v4l2object->req_mode == GST_V4L2_IO_MMAP)
|
|
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->element, "accessing buffers via mode %d", mode);
|
|
v4l2object->mode = mode;
|
|
|
|
/* Map the buffers */
|
|
GST_LOG_OBJECT (v4l2object->element, "initiating buffer pool");
|
|
|
|
if (!(v4l2object->pool = gst_v4l2_buffer_pool_new (v4l2object, caps)))
|
|
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 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, ws, hs, tile_height, padded_height;
|
|
|
|
|
|
ws = GST_VIDEO_FORMAT_INFO_TILE_WS (finfo);
|
|
hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
|
|
tile_height = 1 << hs;
|
|
|
|
padded_height = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, plane,
|
|
info->height + align->padding_top + align->padding_bottom);
|
|
padded_height = GST_ROUND_UP_N (padded_height, tile_height);
|
|
|
|
x_tiles = stride >> ws;
|
|
y_tiles = padded_height >> hs;
|
|
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 = info->height + align->padding_top + align->padding_bottom;
|
|
|
|
for (i = 0; i < finfo->n_planes; i++) {
|
|
switch (finfo->format) {
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
case GST_VIDEO_FORMAT_NV12_64Z32:
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
case GST_VIDEO_FORMAT_NV16:
|
|
case GST_VIDEO_FORMAT_NV24:
|
|
estride = (i == 0 ? 1 : 2) *
|
|
GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, stride);
|
|
break;
|
|
default:
|
|
estride = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, stride);
|
|
break;
|
|
}
|
|
|
|
gst_v4l2_object_set_stride (info, align, i, estride);
|
|
|
|
info->offset[i] = offs;
|
|
offs += stride *
|
|
GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, padded_height);
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->element,
|
|
"Extrapolated for plane %d with base stride %d: "
|
|
"stride %d, offset %" G_GSIZE_FORMAT, i, stride, info->stride[i],
|
|
info->offset[i]);
|
|
}
|
|
}
|
|
|
|
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, 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;
|
|
|
|
padded_width = stride / GST_VIDEO_FORMAT_INFO_PSTRIDE (finfo, 0);
|
|
|
|
if (padded_width < format->fmt.pix.width)
|
|
GST_WARNING_OBJECT (v4l2object->element,
|
|
"Driver bug detected, stride is too small for the 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 hs, tile_height;
|
|
|
|
hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
|
|
tile_height = 1 << hs;
|
|
|
|
padded_height = GST_ROUND_UP_N (padded_height, tile_height);
|
|
}
|
|
|
|
align->padding_bottom = padded_height - info->height - 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->element,
|
|
"Left and top padding is not permitted for tiled formats");
|
|
} else {
|
|
for (i = 0; i < finfo->n_planes; i++) {
|
|
gint vedge, hedge;
|
|
|
|
/* FIXME we assume plane as component as this is true for all supported
|
|
* format we support. */
|
|
|
|
hedge = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, align->padding_left);
|
|
vedge = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, align->padding_top);
|
|
|
|
info->offset[i] += (vedge * info->stride[i]) +
|
|
(hedge * GST_VIDEO_INFO_COMP_PSTRIDE (info, i));
|
|
}
|
|
}
|
|
|
|
store_info:
|
|
GST_DEBUG_OBJECT (v4l2object->element, "Got sizeimage %" G_GSIZE_FORMAT,
|
|
info->size);
|
|
|
|
/* to avoid copies we need video meta if top or left padding */
|
|
v4l2object->need_video_meta =
|
|
((align->padding_top + align->padding_left) != 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);
|
|
} else {
|
|
v4l2object->duration = GST_CLOCK_TIME_NONE;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
|
|
{
|
|
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;
|
|
gint n_v4l_planes;
|
|
gint i = 0;
|
|
gboolean is_mplane, format_changed;
|
|
|
|
GST_V4L2_CHECK_OPEN (v4l2object);
|
|
GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
|
|
|
|
is_mplane = V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type);
|
|
|
|
gst_video_info_init (&info);
|
|
gst_video_alignment_reset (&align);
|
|
|
|
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_HEIGHT (&info);
|
|
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 prefered */
|
|
n_v4l_planes = GST_VIDEO_INFO_N_PLANES (&info);
|
|
if (!n_v4l_planes || !v4l2object->prefered_non_contiguous)
|
|
n_v4l_planes = 1;
|
|
|
|
if (GST_VIDEO_INFO_IS_INTERLACED (&info)) {
|
|
GST_DEBUG_OBJECT (v4l2object->element, "interlaced video");
|
|
/* ideally we would differentiate between types of interlaced video
|
|
* but there is not sufficient information in the caps..
|
|
*/
|
|
field = V4L2_FIELD_INTERLACED;
|
|
} else {
|
|
GST_DEBUG_OBJECT (v4l2object->element, "progressive video");
|
|
field = V4L2_FIELD_NONE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->element, "Desired format %dx%d, format "
|
|
"%" GST_FOURCC_FORMAT " stride: %d", width, height,
|
|
GST_FOURCC_ARGS (pixelformat), GST_VIDEO_INFO_PLANE_STRIDE (&info, 0));
|
|
|
|
memset (&format, 0x00, sizeof (struct v4l2_format));
|
|
format.type = v4l2object->type;
|
|
|
|
if (v4l2object->no_initial_format) {
|
|
format_changed = TRUE;
|
|
} else {
|
|
if (v4l2_ioctl (fd, VIDIOC_G_FMT, &format) < 0)
|
|
goto get_fmt_failed;
|
|
|
|
/* Note that four first fields are the same between v4l2_pix_format and
|
|
* v4l2_pix_format_mplane, so we don't need to duplicate he checks */
|
|
|
|
/* If no size in caps, use configured size */
|
|
if (width == 0 && height == 0) {
|
|
width = format.fmt.pix_mp.width;
|
|
height = format.fmt.pix_mp.height;
|
|
}
|
|
|
|
format_changed = format.type != v4l2object->type ||
|
|
format.fmt.pix_mp.width != width ||
|
|
format.fmt.pix_mp.height != height ||
|
|
format.fmt.pix_mp.pixelformat != pixelformat ||
|
|
format.fmt.pix_mp.field != field;
|
|
}
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
if (is_mplane) {
|
|
GST_DEBUG_OBJECT (v4l2object->element, "Current size is %dx%d, format "
|
|
"%" GST_FOURCC_FORMAT " colorspace %d, nb planes %d",
|
|
format.fmt.pix_mp.width, format.fmt.pix_mp.height,
|
|
GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
|
|
format.fmt.pix_mp.colorspace, format.fmt.pix_mp.num_planes);
|
|
|
|
for (i = 0; i < format.fmt.pix_mp.num_planes; i++)
|
|
GST_DEBUG_OBJECT (v4l2object->element, " stride %d",
|
|
format.fmt.pix_mp.plane_fmt[i].bytesperline);
|
|
} else {
|
|
GST_DEBUG_OBJECT (v4l2object->element, "Current size is %dx%d, format "
|
|
"%" GST_FOURCC_FORMAT " stride %d, colorspace %d",
|
|
format.fmt.pix.width, format.fmt.pix.height,
|
|
GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
|
|
format.fmt.pix.bytesperline, format.fmt.pix.colorspace);
|
|
}
|
|
#endif
|
|
|
|
/* If nothing changed, we are done */
|
|
if (!format_changed)
|
|
goto done;
|
|
|
|
/* something different, set the format */
|
|
GST_DEBUG_OBJECT (v4l2object->element, "Setting format to %dx%d, format "
|
|
"%" GST_FOURCC_FORMAT, width, height, GST_FOURCC_ARGS (pixelformat));
|
|
|
|
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 prefered 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_WS (info.finfo);
|
|
|
|
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 = ENCODED_BUFFER_SIZE;
|
|
} 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_WS (info.finfo);
|
|
|
|
/* try to ask our prefered stride */
|
|
format.fmt.pix.bytesperline = stride;
|
|
|
|
if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_ENCODED)
|
|
format.fmt.pix.sizeimage = ENCODED_BUFFER_SIZE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->element, "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->element, " stride %d",
|
|
format.fmt.pix_mp.plane_fmt[i].bytesperline);
|
|
} else {
|
|
GST_DEBUG_OBJECT (v4l2object->element, " stride %d",
|
|
format.fmt.pix.bytesperline);
|
|
}
|
|
#endif
|
|
|
|
if (v4l2_ioctl (fd, VIDIOC_S_FMT, &format) < 0)
|
|
goto set_fmt_failed;
|
|
|
|
GST_DEBUG_OBJECT (v4l2object->element, "Got format of %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->element, " 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->element, " stride %d, sizeimage %d",
|
|
format.fmt.pix.bytesperline, format.fmt.pix.sizeimage);
|
|
}
|
|
#endif
|
|
|
|
if (format.fmt.pix.pixelformat != pixelformat)
|
|
goto invalid_pixelformat;
|
|
|
|
/* 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;
|
|
|
|
if (GST_VIDEO_INFO_HAS_ALPHA (&info)) {
|
|
struct v4l2_control ctl = { 0, };
|
|
ctl.id = V4L2_CID_ALPHA_COMPONENT;
|
|
ctl.value = 0xff;
|
|
|
|
if (v4l2_ioctl (fd, VIDIOC_S_CTRL, &ctl) < 0)
|
|
GST_WARNING_OBJECT (v4l2object->element,
|
|
"Failed to set alpha component value");
|
|
}
|
|
|
|
/* Is there a reason we require the caller to always specify a framerate? */
|
|
GST_DEBUG_OBJECT (v4l2object->element, "Desired framerate: %u/%u", fps_n,
|
|
fps_d);
|
|
|
|
memset (&streamparm, 0x00, sizeof (struct v4l2_streamparm));
|
|
streamparm.type = v4l2object->type;
|
|
|
|
if (v4l2_ioctl (fd, VIDIOC_G_PARM, &streamparm) < 0)
|
|
goto get_parm_failed;
|
|
|
|
GST_VIDEO_INFO_FPS_N (&info) =
|
|
streamparm.parm.capture.timeperframe.denominator;
|
|
GST_VIDEO_INFO_FPS_D (&info) = streamparm.parm.capture.timeperframe.numerator;
|
|
|
|
if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE
|
|
|| v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
|
|
GST_DEBUG_OBJECT (v4l2object->element, "Got 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->element, "Setting 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->element,
|
|
"Not setting framerate (not supported)");
|
|
goto done;
|
|
}
|
|
|
|
/* 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 (v4l2_ioctl (fd, VIDIOC_S_PARM, &streamparm) < 0)
|
|
goto set_parm_failed;
|
|
|
|
/* get new values */
|
|
fps_d = streamparm.parm.capture.timeperframe.numerator;
|
|
fps_n = streamparm.parm.capture.timeperframe.denominator;
|
|
|
|
GST_INFO_OBJECT (v4l2object->element, "Set framerate to %u/%u", 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);
|
|
|
|
/* now configure the pool */
|
|
if (!gst_v4l2_object_setup_pool (v4l2object, caps))
|
|
goto pool_failed;
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
invalid_caps:
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object->element, "can't parse caps %" GST_PTR_FORMAT,
|
|
caps);
|
|
return FALSE;
|
|
}
|
|
get_fmt_failed:
|
|
{
|
|
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
|
|
(_("Device '%s' does not support video capture"),
|
|
v4l2object->videodev),
|
|
("Call to G_FMT failed: (%s)", g_strerror (errno)));
|
|
return FALSE;
|
|
}
|
|
set_fmt_failed:
|
|
{
|
|
if (errno == EBUSY) {
|
|
GST_ELEMENT_ERROR (v4l2object->element, 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 {
|
|
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
|
|
(_("Device '%s' cannot capture at %dx%d"),
|
|
v4l2object->videodev, width, height),
|
|
("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_ELEMENT_ERROR (v4l2object->element, 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_ELEMENT_ERROR (v4l2object->element, 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_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
|
|
(_("Device '%s' does support non-contiguous planes"),
|
|
v4l2object->videodev),
|
|
("Device wants %d planes", format.fmt.pix_mp.num_planes));
|
|
return FALSE;
|
|
}
|
|
get_parm_failed:
|
|
{
|
|
/* it's possible that this call is not supported */
|
|
if (errno != EINVAL && errno != ENOTTY) {
|
|
GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
|
|
(_("Could not get parameters on device '%s'"),
|
|
v4l2object->videodev), GST_ERROR_SYSTEM);
|
|
}
|
|
goto done;
|
|
}
|
|
set_parm_failed:
|
|
{
|
|
GST_ELEMENT_WARNING (v4l2object->element, 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;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_v4l2_object_acquire_format:
|
|
* @v4l2object the object
|
|
* @info a GstVideoInfo to be filled
|
|
*
|
|
* Acquire the driver choosen format. This is useful in decoder or encoder elements where
|
|
* the output format is choosen 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;
|
|
GstVideoFormat format;
|
|
guint width, height;
|
|
GstVideoAlignment align;
|
|
|
|
gst_video_info_init (info);
|
|
gst_video_alignment_reset (&align);
|
|
|
|
memset (&fmt, 0x00, sizeof (struct v4l2_format));
|
|
fmt.type = v4l2object->type;
|
|
if (v4l2_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;
|
|
|
|
memset (&crop, 0, sizeof (struct v4l2_crop));
|
|
crop.type = v4l2object->type;
|
|
if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_CROP, &crop) >= 0) {
|
|
align.padding_left = crop.c.left;
|
|
align.padding_top = crop.c.top;
|
|
align.padding_right = width - crop.c.width - crop.c.left;
|
|
align.padding_bottom = height - crop.c.height - crop.c.top;
|
|
width = crop.c.width;
|
|
height = crop.c.height;
|
|
}
|
|
|
|
gst_video_info_set_format (info, format, width, height);
|
|
|
|
switch (fmt.fmt.pix.field) {
|
|
case V4L2_FIELD_ANY:
|
|
case V4L2_FIELD_NONE:
|
|
info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
|
|
break;
|
|
case V4L2_FIELD_INTERLACED:
|
|
case V4L2_FIELD_INTERLACED_TB:
|
|
case V4L2_FIELD_INTERLACED_BT:
|
|
info->interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
|
|
break;
|
|
default:
|
|
goto unsupported_field;
|
|
}
|
|
|
|
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 devices 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 devices uses an unsupported pixel format.")),
|
|
("V4L2 format %" GST_FOURCC_FORMAT " not supported",
|
|
GST_FOURCC_ARGS (fmt.fmt.pix.pixelformat)));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_set_crop (GstV4l2Object * obj)
|
|
{
|
|
struct v4l2_crop crop = { 0 };
|
|
|
|
crop.type = obj->type;
|
|
crop.c.left = obj->align.padding_left;
|
|
crop.c.top = obj->align.padding_top;
|
|
crop.c.width = obj->info.width;
|
|
crop.c.height = obj->info.height;
|
|
|
|
if (obj->align.padding_left + obj->align.padding_top +
|
|
obj->align.padding_right + obj->align.padding_bottom == 0) {
|
|
GST_DEBUG_OBJECT (obj->element, "no cropping needed");
|
|
return TRUE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (obj->element,
|
|
"Desired cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
|
|
crop.c.width, crop.c.height);
|
|
|
|
if (v4l2_ioctl (obj->video_fd, VIDIOC_S_CROP, &crop) < 0) {
|
|
GST_WARNING_OBJECT (obj->element, "VIDIOC_S_CROP failed");
|
|
return FALSE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (obj->element,
|
|
"Got cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
|
|
crop.c.width, crop.c.height);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_caps_equal (GstV4l2Object * v4l2object, GstCaps * caps)
|
|
{
|
|
GstStructure *config;
|
|
GstCaps *oldcaps;
|
|
gboolean ret;
|
|
|
|
if (!v4l2object->pool)
|
|
return FALSE;
|
|
|
|
config = gst_buffer_pool_get_config (v4l2object->pool);
|
|
gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
|
|
|
|
ret = oldcaps && gst_caps_is_equal (caps, oldcaps);
|
|
|
|
gst_structure_free (config);
|
|
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_unlock (GstV4l2Object * v4l2object)
|
|
{
|
|
GST_LOG_OBJECT (v4l2object->element, "flush poll");
|
|
gst_poll_set_flushing (v4l2object->poll, TRUE);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_unlock_stop (GstV4l2Object * v4l2object)
|
|
{
|
|
GST_LOG_OBJECT (v4l2object->element, "flush stop poll");
|
|
gst_poll_set_flushing (v4l2object->poll, FALSE);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_stop (GstV4l2Object * v4l2object)
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2object->element, "stopping");
|
|
|
|
if (!GST_V4L2_IS_OPEN (v4l2object))
|
|
goto done;
|
|
if (!GST_V4L2_IS_ACTIVE (v4l2object))
|
|
goto done;
|
|
|
|
if (v4l2object->pool) {
|
|
GST_DEBUG_OBJECT (v4l2object->element, "deactivating pool");
|
|
gst_buffer_pool_set_active (v4l2object->pool, FALSE);
|
|
gst_object_unref (v4l2object->pool);
|
|
v4l2object->pool = NULL;
|
|
}
|
|
|
|
GST_V4L2_SET_INACTIVE (v4l2object);
|
|
|
|
done:
|
|
return TRUE;
|
|
}
|
|
|
|
GstCaps *
|
|
gst_v4l2_object_get_caps (GstV4l2Object * v4l2object, GstCaps * filter)
|
|
{
|
|
GstCaps *ret;
|
|
GSList *walk;
|
|
GSList *formats;
|
|
|
|
if (v4l2object->probed_caps == NULL) {
|
|
formats = gst_v4l2_object_get_format_list (v4l2object);
|
|
|
|
ret = gst_caps_new_empty ();
|
|
|
|
for (walk = formats; walk; walk = walk->next) {
|
|
struct v4l2_fmtdesc *format;
|
|
GstStructure *template;
|
|
|
|
format = (struct v4l2_fmtdesc *) walk->data;
|
|
|
|
template =
|
|
gst_v4l2_object_v4l2fourcc_to_bare_struct (format->pixelformat);
|
|
|
|
if (template) {
|
|
GstCaps *tmp;
|
|
|
|
tmp = gst_v4l2_object_probe_caps_for_format (v4l2object,
|
|
format->pixelformat, template);
|
|
if (tmp)
|
|
gst_caps_append (ret, tmp);
|
|
|
|
gst_structure_free (template);
|
|
} else {
|
|
GST_DEBUG_OBJECT (v4l2object->element, "unknown format %u",
|
|
format->pixelformat);
|
|
}
|
|
}
|
|
v4l2object->probed_caps = ret;
|
|
}
|
|
|
|
if (filter) {
|
|
ret = gst_caps_intersect_full (filter, v4l2object->probed_caps,
|
|
GST_CAPS_INTERSECT_FIRST);
|
|
} else {
|
|
ret = gst_caps_ref (v4l2object->probed_caps);
|
|
}
|
|
|
|
GST_INFO_OBJECT (v4l2object->element, "probed caps: %" GST_PTR_FORMAT, ret);
|
|
LOG_CAPS (v4l2object->element, ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
|
|
{
|
|
GstCaps *caps;
|
|
GstBufferPool *pool = NULL, *other_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;
|
|
struct v4l2_control ctl = { 0, };
|
|
|
|
GST_DEBUG_OBJECT (obj->element, "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);
|
|
|
|
if (obj->pool == NULL) {
|
|
if (!gst_v4l2_object_setup_pool (obj, caps))
|
|
goto pool_failed;
|
|
}
|
|
|
|
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->element, "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, NULL);
|
|
|
|
can_share_own_pool = (has_video_meta || !obj->need_video_meta);
|
|
|
|
/* 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->element,
|
|
"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->element,
|
|
"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->element,
|
|
"streaming mode: using our own pool %" GST_PTR_FORMAT, pool);
|
|
pushing_from_our_pool = TRUE;
|
|
} else if (pool) {
|
|
GST_DEBUG_OBJECT (obj->element,
|
|
"streaming mode: copying to downstream pool %" GST_PTR_FORMAT,
|
|
pool);
|
|
} else {
|
|
GST_DEBUG_OBJECT (obj->element,
|
|
"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->element, "unhandled mode");
|
|
break;
|
|
}
|
|
|
|
if (size == 0)
|
|
goto no_size;
|
|
|
|
/* Certain driver may expose a minimum through controls */
|
|
ctl.id = V4L2_CID_MIN_BUFFERS_FOR_CAPTURE;
|
|
if (v4l2_ioctl (obj->video_fd, VIDIOC_G_CTRL, &ctl) >= 0) {
|
|
GST_DEBUG_OBJECT (obj->element, "driver require a minimum of %d buffers",
|
|
ctl.value);
|
|
obj->min_buffers_for_capture = ctl.value;
|
|
} else {
|
|
obj->min_buffers_for_capture = 0;
|
|
}
|
|
|
|
/* 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 1 more, so we don't endup up with everything downstream or
|
|
* held by the decoder. */
|
|
own_min = min + obj->min_buffers_for_capture + 1;
|
|
|
|
/* Update min/max so the base class does not reset our settings */
|
|
min = own_min;
|
|
max = 0;
|
|
} 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_for_capture + 1;
|
|
|
|
/* 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);
|
|
}
|
|
|
|
/* 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 already configured/active, skip it */
|
|
/* FIXME not entirely correct, See bug 728268 */
|
|
if (gst_buffer_pool_is_active (obj->pool)) {
|
|
gst_buffer_pool_config_get_params (config, NULL, &size, &min, &max);
|
|
goto setup_other_pool;
|
|
}
|
|
|
|
if (obj->need_video_meta) {
|
|
GST_DEBUG_OBJECT (obj->element, "activate Video Meta");
|
|
gst_buffer_pool_config_add_option (config,
|
|
GST_BUFFER_POOL_OPTION_VIDEO_META);
|
|
}
|
|
|
|
gst_buffer_pool_config_set_params (config, caps, size, own_min, 0);
|
|
|
|
GST_DEBUG_OBJECT (obj->element, "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->element, "own pool config changed to %"
|
|
GST_PTR_FORMAT, config);
|
|
|
|
/* our pool will adjust the maximum buffer, which we are fine with */
|
|
if (obj->pool == pool)
|
|
gst_buffer_pool_config_get_params (config, NULL, &size, &min, &max);
|
|
|
|
if (!gst_buffer_pool_set_config (obj->pool, config))
|
|
goto config_failed;
|
|
}
|
|
|
|
setup_other_pool:
|
|
|
|
/* Now configure the other pool if different */
|
|
if (obj->pool != pool)
|
|
other_pool = pool;
|
|
|
|
if (other_pool) {
|
|
if (gst_buffer_pool_is_active (obj->pool))
|
|
goto done;
|
|
|
|
config = gst_buffer_pool_get_config (pool);
|
|
gst_buffer_pool_config_set_params (config, caps, size, min, max);
|
|
|
|
GST_DEBUG_OBJECT (obj->element, "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->element, "activate Video Meta");
|
|
gst_buffer_pool_config_add_option (config,
|
|
GST_BUFFER_POOL_OPTION_VIDEO_META);
|
|
}
|
|
|
|
/* TODO check return value, validate changes and confirm */
|
|
gst_buffer_pool_set_config (pool, config);
|
|
}
|
|
|
|
done:
|
|
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 (pool)
|
|
gst_object_unref (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;
|
|
}
|
|
cleanup:
|
|
{
|
|
if (pool)
|
|
gst_object_unref (pool);
|
|
return FALSE;
|
|
}
|
|
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"));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_v4l2_object_propose_allocation (GstV4l2Object * obj, GstQuery * query)
|
|
{
|
|
GstBufferPool *pool;
|
|
/* we need at least 2 buffers to operate */
|
|
guint size, min, max;
|
|
GstCaps *caps;
|
|
gboolean need_pool;
|
|
|
|
/* Set defaults allocation parameters */
|
|
size = obj->info.size;
|
|
min = GST_V4L2_MIN_BUFFERS;
|
|
max = VIDEO_MAX_FRAME;
|
|
|
|
gst_query_parse_allocation (query, &caps, &need_pool);
|
|
|
|
if (caps == NULL)
|
|
goto no_caps;
|
|
|
|
if ((pool = obj->pool))
|
|
gst_object_ref (pool);
|
|
|
|
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->element,
|
|
"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_query_add_allocation_pool (query, pool, size, min, max);
|
|
|
|
/* we also support various metadata */
|
|
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
|
|
|
|
if (pool)
|
|
gst_object_unref (pool);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
no_caps:
|
|
{
|
|
GST_DEBUG_OBJECT (obj->element, "no caps specified");
|
|
return FALSE;
|
|
}
|
|
different_caps:
|
|
{
|
|
/* different caps, we can't use this pool */
|
|
GST_DEBUG_OBJECT (obj->element, "pool has different caps");
|
|
return FALSE;
|
|
}
|
|
}
|