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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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551 lines
15 KiB
C
551 lines
15 KiB
C
/* GStreamer
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* Copyright (C) 2010 David Schleef <ds@entropywave.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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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
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/base/gstbasesrc.h>
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#include "gstlinsyssdisrc.h"
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <sys/ioctl.h>
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#include "sdivideo.h"
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/* prototypes */
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static void gst_linsys_sdi_src_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_linsys_sdi_src_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static void gst_linsys_sdi_src_dispose (GObject * object);
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static void gst_linsys_sdi_src_finalize (GObject * object);
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static GstCaps *gst_linsys_sdi_src_get_caps (GstBaseSrc * src);
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static gboolean gst_linsys_sdi_src_set_caps (GstBaseSrc * src, GstCaps * caps);
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static gboolean gst_linsys_sdi_src_negotiate (GstBaseSrc * src);
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static gboolean gst_linsys_sdi_src_newsegment (GstBaseSrc * src);
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static gboolean gst_linsys_sdi_src_start (GstBaseSrc * src);
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static gboolean gst_linsys_sdi_src_stop (GstBaseSrc * src);
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static void
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gst_linsys_sdi_src_get_times (GstBaseSrc * src, GstBuffer * buffer,
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GstClockTime * start, GstClockTime * end);
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static gboolean gst_linsys_sdi_src_get_size (GstBaseSrc * src, guint64 * size);
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static gboolean gst_linsys_sdi_src_is_seekable (GstBaseSrc * src);
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static gboolean gst_linsys_sdi_src_unlock (GstBaseSrc * src);
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static gboolean gst_linsys_sdi_src_event (GstBaseSrc * src, GstEvent * event);
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static GstFlowReturn
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gst_linsys_sdi_src_create (GstBaseSrc * src, guint64 offset, guint size,
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GstBuffer ** buf);
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static gboolean gst_linsys_sdi_src_do_seek (GstBaseSrc * src,
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GstSegment * segment);
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static gboolean gst_linsys_sdi_src_query (GstBaseSrc * src, GstQuery * query);
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static gboolean gst_linsys_sdi_src_check_get_range (GstBaseSrc * src);
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static void gst_linsys_sdi_src_fixate (GstBaseSrc * src, GstCaps * caps);
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static gboolean gst_linsys_sdi_src_unlock_stop (GstBaseSrc * src);
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static gboolean
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gst_linsys_sdi_src_prepare_seek_segment (GstBaseSrc * src, GstEvent * seek,
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GstSegment * segment);
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enum
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{
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PROP_0,
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PROP_DEVICE
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};
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#define DEFAULT_DEVICE "/dev/sdirx0"
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GST_DEBUG_CATEGORY (gst_linsys_sdi_src_debug);
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#define GST_CAT_DEFAULT gst_linsys_sdi_src_debug
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/* pad templates */
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static GstStaticPadTemplate gst_linsys_sdi_src_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-raw-yuv,format=(fourcc)UYVY,"
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"width=720,height=480,pixel-aspect-ratio=10/11,"
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"framerate=30000/1001,interlaced=true,"
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"colorspec=sdtv,chroma-site=mpeg2")
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);
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/* class initialization */
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GST_BOILERPLATE (GstLinsysSdiSrc, gst_linsys_sdi_src, GstBaseSrc,
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GST_TYPE_BASE_SRC);
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static void
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gst_linsys_sdi_src_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_static_pad_template (element_class,
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&gst_linsys_sdi_src_src_template);
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gst_element_class_set_static_metadata (element_class, "SDI video source",
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"Source/Video", "Reads video from SDI capture device",
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"David Schleef <ds@entropywave.com>");
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}
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static void
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gst_linsys_sdi_src_class_init (GstLinsysSdiSrcClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstBaseSrcClass *base_src_class = GST_BASE_SRC_CLASS (klass);
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GST_DEBUG_CATEGORY_INIT (gst_linsys_sdi_src_debug, "linsyssdisrc", 0,
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"FIXME");
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gobject_class->set_property = gst_linsys_sdi_src_set_property;
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gobject_class->get_property = gst_linsys_sdi_src_get_property;
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gobject_class->dispose = gst_linsys_sdi_src_dispose;
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gobject_class->finalize = gst_linsys_sdi_src_finalize;
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base_src_class->get_caps = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_get_caps);
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base_src_class->set_caps = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_set_caps);
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if (0)
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base_src_class->negotiate =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_negotiate);
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base_src_class->newsegment =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_newsegment);
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base_src_class->start = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_start);
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base_src_class->stop = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_stop);
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base_src_class->get_times = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_get_times);
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base_src_class->get_size = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_get_size);
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base_src_class->is_seekable =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_is_seekable);
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base_src_class->unlock = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_unlock);
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base_src_class->event = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_event);
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base_src_class->create = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_create);
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if (0)
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base_src_class->do_seek = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_do_seek);
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base_src_class->query = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_query);
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base_src_class->check_get_range =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_check_get_range);
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base_src_class->fixate = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_fixate);
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base_src_class->unlock_stop =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_unlock_stop);
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base_src_class->prepare_seek_segment =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_prepare_seek_segment);
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g_object_class_install_property (gobject_class, PROP_DEVICE,
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g_param_spec_string ("device", "Device", "device to transmit data on",
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DEFAULT_DEVICE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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static void
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gst_linsys_sdi_src_init (GstLinsysSdiSrc * linsyssdisrc,
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GstLinsysSdiSrcClass * linsyssdisrc_class)
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{
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gst_base_src_set_live (GST_BASE_SRC (linsyssdisrc), TRUE);
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gst_base_src_set_blocksize (GST_BASE_SRC (linsyssdisrc), 720 * 480 * 2);
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linsyssdisrc->device = g_strdup (DEFAULT_DEVICE);
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linsyssdisrc->is_625 = FALSE;
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linsyssdisrc->fd = -1;
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}
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void
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gst_linsys_sdi_src_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstLinsysSdiSrc *linsyssdisrc;
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g_return_if_fail (GST_IS_LINSYS_SDI_SRC (object));
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linsyssdisrc = GST_LINSYS_SDI_SRC (object);
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switch (property_id) {
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case PROP_DEVICE:
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g_free (linsyssdisrc->device);
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linsyssdisrc->device = g_value_dup_string (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_linsys_sdi_src_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GstLinsysSdiSrc *linsyssdisrc;
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g_return_if_fail (GST_IS_LINSYS_SDI_SRC (object));
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linsyssdisrc = GST_LINSYS_SDI_SRC (object);
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switch (property_id) {
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case PROP_DEVICE:
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g_value_set_string (value, linsyssdisrc->device);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_linsys_sdi_src_dispose (GObject * object)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (object);
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g_return_if_fail (linsyssdisrc != NULL);
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/* clean up as possible. may be called multiple times */
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g_free (linsyssdisrc->device);
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linsyssdisrc->device = NULL;
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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void
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gst_linsys_sdi_src_finalize (GObject * object)
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{
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g_return_if_fail (GST_IS_LINSYS_SDI_SRC (object));
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/* clean up object here */
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static GstCaps *
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gst_linsys_sdi_src_get_caps (GstBaseSrc * src)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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GST_DEBUG_OBJECT (linsyssdisrc, "get_caps");
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return NULL;
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}
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static gboolean
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gst_linsys_sdi_src_set_caps (GstBaseSrc * src, GstCaps * caps)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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GST_DEBUG_OBJECT (linsyssdisrc, "set_caps");
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return TRUE;
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}
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static gboolean
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gst_linsys_sdi_src_negotiate (GstBaseSrc * src)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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GST_DEBUG_OBJECT (linsyssdisrc, "negotiate");
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return TRUE;
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}
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static gboolean
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gst_linsys_sdi_src_newsegment (GstBaseSrc * src)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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GST_DEBUG_OBJECT (linsyssdisrc, "newsegment");
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return TRUE;
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}
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static gboolean
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gst_linsys_sdi_src_start (GstBaseSrc * src)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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int fd;
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GST_DEBUG_OBJECT (linsyssdisrc, "start");
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fd = open (linsyssdisrc->device, O_RDONLY);
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if (fd < 0) {
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GST_ERROR_OBJECT (src, "failed to open device");
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return FALSE;
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}
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linsyssdisrc->fd = fd;
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if (linsyssdisrc->is_625) {
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linsyssdisrc->tmpdata = g_malloc (864 * 625 * 2);
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} else {
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linsyssdisrc->tmpdata = g_malloc (858 * 525 * 2);
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}
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linsyssdisrc->have_sync = FALSE;
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return TRUE;
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}
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static gboolean
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gst_linsys_sdi_src_stop (GstBaseSrc * src)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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GST_DEBUG_OBJECT (linsyssdisrc, "stop");
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#if 0
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if (linsyssdisrc->fd > 0) {
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close (linsyssdisrc->fd);
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linsyssdisrc->fd = -1;
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}
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g_free (linsyssdisrc->tmpdata);
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linsyssdisrc->tmpdata = NULL;
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#endif
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return TRUE;
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}
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static void
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gst_linsys_sdi_src_get_times (GstBaseSrc * src, GstBuffer * buffer,
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GstClockTime * start, GstClockTime * end)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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GST_DEBUG_OBJECT (linsyssdisrc, "get_times");
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}
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static gboolean
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gst_linsys_sdi_src_get_size (GstBaseSrc * src, guint64 * size)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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GST_DEBUG_OBJECT (linsyssdisrc, "get_size");
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return FALSE;
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}
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static gboolean
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gst_linsys_sdi_src_is_seekable (GstBaseSrc * src)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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GST_DEBUG_OBJECT (linsyssdisrc, "is_seekable");
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return FALSE;
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}
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static gboolean
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gst_linsys_sdi_src_unlock (GstBaseSrc * src)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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GST_DEBUG_OBJECT (linsyssdisrc, "unlock");
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return TRUE;
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}
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static gboolean
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gst_linsys_sdi_src_event (GstBaseSrc * src, GstEvent * event)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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GST_DEBUG_OBJECT (linsyssdisrc, "event");
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return TRUE;
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}
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static void
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sdi_demux (guint8 * data, GstBuffer * buf, gboolean is_625)
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{
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int j;
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int line;
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int offset;
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if (is_625) {
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offset = (864 - 720) / 2;
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for (j = 0; j < 480; j++) {
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if (j & 1) {
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line = 23 + (j - 1) / 2;
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} else {
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line = 335 + j / 2;
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}
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memcpy (GST_BUFFER_DATA (buf) + j * 720 * 2,
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data + (line - 1) * 864 * 2 + offset * 4, 720 * 2);
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}
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} else {
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offset = (858 - 720) / 2;
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for (j = 0; j < 480; j++) {
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if (j & 1) {
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line = 23 + (j - 1) / 2;
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} else {
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line = 285 + j / 2;
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}
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memcpy (GST_BUFFER_DATA (buf) + j * 720 * 2,
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data + (line - 1) * 858 * 2 + offset * 4, 720 * 2);
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}
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}
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}
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static GstFlowReturn
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gst_linsys_sdi_src_create (GstBaseSrc * src, guint64 _offset, guint size,
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GstBuffer ** buf)
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{
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GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
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int offset;
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int ret;
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struct pollfd pfd;
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int sdi_size;
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int sdi_width;
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guint8 *data = linsyssdisrc->tmpdata;
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if (linsyssdisrc->fd < 0)
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return GST_FLOW_FLUSHING;
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if (linsyssdisrc->is_625) {
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sdi_width = 864;
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sdi_size = 864 * 625 * 2;
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} else {
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sdi_width = 858;
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sdi_size = 858 * 525 * 2;
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}
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GST_DEBUG_OBJECT (linsyssdisrc, "create size=%d fd=%d", size,
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linsyssdisrc->fd);
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offset = 0;
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while (offset < sdi_size) {
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pfd.fd = linsyssdisrc->fd;
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pfd.events = POLLIN | POLLPRI;
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ret = poll (&pfd, 1, 1000);
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if (ret < 0) {
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GST_ERROR_OBJECT (src, "poll failed %d", ret);
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return GST_FLOW_ERROR;
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}
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if (pfd.revents & POLLIN) {
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if (linsyssdisrc->have_sync) {
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ret = read (linsyssdisrc->fd, data + offset, sdi_size - offset);
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} else {
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ret = read (linsyssdisrc->fd, data + offset, sdi_width * 2);
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}
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if (ret < 0) {
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GST_ERROR_OBJECT (src, "read failed %d", ret);
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return GST_FLOW_ERROR;
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}
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if (!linsyssdisrc->have_sync) {
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int v = (data[3] >> 5) & 1;
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int f = (data[3] >> 6) & 1;
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if (!linsyssdisrc->have_vblank && (f == 0) && (v == 1)) {
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linsyssdisrc->have_vblank = TRUE;
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|
} else if (linsyssdisrc->have_vblank && (f == 0) && (v == 0)) {
|
|
offset += sdi_width * 2 * 9;
|
|
linsyssdisrc->have_sync = TRUE;
|
|
offset += ret;
|
|
}
|
|
} else {
|
|
offset += ret;
|
|
}
|
|
}
|
|
if (pfd.revents & POLLPRI) {
|
|
long val;
|
|
|
|
ret = ioctl (linsyssdisrc->fd, SDIVIDEO_IOC_RXGETEVENTS, &val);
|
|
if (ret < 0) {
|
|
GST_ERROR_OBJECT (src, "ioctl failed %d", ret);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
if (val & SDIVIDEO_EVENT_RX_BUFFER) {
|
|
GST_ERROR_OBJECT (src, "receive buffer overrun");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
if (val & SDIVIDEO_EVENT_RX_FIFO) {
|
|
GST_ERROR_OBJECT (src, "receive FIFO overrun");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
if (val & SDIVIDEO_EVENT_RX_CARRIER) {
|
|
GST_ERROR_OBJECT (src, "carrier status change");
|
|
}
|
|
}
|
|
}
|
|
|
|
*buf = gst_buffer_new_and_alloc (size);
|
|
sdi_demux (data, *buf, linsyssdisrc->is_625);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static gboolean
|
|
gst_linsys_sdi_src_do_seek (GstBaseSrc * src, GstSegment * segment)
|
|
{
|
|
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
|
|
|
|
GST_DEBUG_OBJECT (linsyssdisrc, "do_seek");
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_linsys_sdi_src_query (GstBaseSrc * src, GstQuery * query)
|
|
{
|
|
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
|
|
|
|
GST_DEBUG_OBJECT (linsyssdisrc, "query");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_linsys_sdi_src_check_get_range (GstBaseSrc * src)
|
|
{
|
|
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
|
|
|
|
GST_DEBUG_OBJECT (linsyssdisrc, "get_range");
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gst_linsys_sdi_src_fixate (GstBaseSrc * src, GstCaps * caps)
|
|
{
|
|
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
|
|
|
|
GST_DEBUG_OBJECT (linsyssdisrc, "fixate");
|
|
}
|
|
|
|
static gboolean
|
|
gst_linsys_sdi_src_unlock_stop (GstBaseSrc * src)
|
|
{
|
|
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
|
|
|
|
GST_DEBUG_OBJECT (linsyssdisrc, "stop");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_linsys_sdi_src_prepare_seek_segment (GstBaseSrc * src, GstEvent * seek,
|
|
GstSegment * segment)
|
|
{
|
|
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
|
|
|
|
GST_DEBUG_OBJECT (linsyssdisrc, "seek_segment");
|
|
|
|
return FALSE;
|
|
}
|