2013-11-28 22:14:18 +00:00
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/*
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* Copyright (C) 2014 Collabora Ltd.
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* Author: Nicolas Dufresne <nicolas.dufresne@collabora.co.uk>
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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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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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2013-12-18 08:56:35 +00:00
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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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2013-11-28 22:14:18 +00:00
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#include "gstv4l2videodec.h"
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#include "v4l2_calls.h"
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#include <string.h>
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#include <gst/gst-i18n-plugin.h>
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GST_DEBUG_CATEGORY_STATIC (gst_v4l2_video_dec_debug);
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#define GST_CAT_DEFAULT gst_v4l2_video_dec_debug
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static gboolean gst_v4l2_video_dec_flush (GstVideoDecoder * decoder);
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2013-12-18 08:56:35 +00:00
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typedef struct
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{
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gchar *device;
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GstCaps *sink_caps;
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GstCaps *src_caps;
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2014-03-16 10:38:07 +00:00
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} GstV4l2VideoDecCData;
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2013-12-18 08:56:35 +00:00
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2013-11-28 22:14:18 +00:00
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enum
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{
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PROP_0,
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2014-05-15 22:08:53 +00:00
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V4L2_STD_OBJECT_PROPS
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2013-11-28 22:14:18 +00:00
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};
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2014-03-16 10:38:07 +00:00
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#define gst_v4l2_video_dec_parent_class parent_class
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G_DEFINE_ABSTRACT_TYPE (GstV4l2VideoDec, gst_v4l2_video_dec,
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GST_TYPE_VIDEO_DECODER);
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2013-12-18 08:56:35 +00:00
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2013-11-28 22:14:18 +00:00
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static void
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gst_v4l2_video_dec_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec)
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{
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GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (object);
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switch (prop_id) {
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2014-05-15 22:08:53 +00:00
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case PROP_OUTPUT_IO_MODE:
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2013-11-28 22:14:18 +00:00
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gst_v4l2_object_set_property_helper (self->v4l2output, prop_id, value,
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pspec);
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break;
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case PROP_CAPTURE_IO_MODE:
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gst_v4l2_object_set_property_helper (self->v4l2capture, prop_id, value,
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pspec);
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break;
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/* By default, only set on output */
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default:
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if (!gst_v4l2_object_set_property_helper (self->v4l2output,
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prop_id, value, pspec)) {
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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break;
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}
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}
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static void
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gst_v4l2_video_dec_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec)
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{
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GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (object);
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switch (prop_id) {
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2015-11-19 20:33:45 +00:00
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case PROP_OUTPUT_IO_MODE:
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2013-11-28 22:14:18 +00:00
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gst_v4l2_object_get_property_helper (self->v4l2output, prop_id, value,
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pspec);
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break;
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case PROP_CAPTURE_IO_MODE:
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2015-11-19 20:33:45 +00:00
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gst_v4l2_object_get_property_helper (self->v4l2capture, prop_id, value,
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pspec);
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2013-11-28 22:14:18 +00:00
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break;
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/* By default read from output */
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default:
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if (!gst_v4l2_object_get_property_helper (self->v4l2output,
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prop_id, value, pspec)) {
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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break;
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}
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}
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static gboolean
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gst_v4l2_video_dec_open (GstVideoDecoder * decoder)
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{
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GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
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GST_DEBUG_OBJECT (self, "Opening");
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if (!gst_v4l2_object_open (self->v4l2output))
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goto failure;
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if (!gst_v4l2_object_open_shared (self->v4l2capture, self->v4l2output))
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goto failure;
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self->probed_sinkcaps = gst_v4l2_object_get_caps (self->v4l2output,
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gst_v4l2_object_get_codec_caps ());
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if (gst_caps_is_empty (self->probed_sinkcaps))
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goto no_encoded_format;
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self->probed_srccaps = gst_v4l2_object_get_caps (self->v4l2capture,
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gst_v4l2_object_get_raw_caps ());
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if (gst_caps_is_empty (self->probed_srccaps))
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goto no_raw_format;
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return TRUE;
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no_encoded_format:
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GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
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(_("Encoder on device %s has no supported input format"),
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self->v4l2output->videodev), (NULL));
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goto failure;
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no_raw_format:
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GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
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(_("Encoder on device %s has no supported output format"),
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self->v4l2output->videodev), (NULL));
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goto failure;
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failure:
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if (GST_V4L2_IS_OPEN (self->v4l2output))
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gst_v4l2_object_close (self->v4l2output);
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if (GST_V4L2_IS_OPEN (self->v4l2capture))
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gst_v4l2_object_close (self->v4l2capture);
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gst_caps_replace (&self->probed_srccaps, NULL);
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gst_caps_replace (&self->probed_sinkcaps, NULL);
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return FALSE;
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}
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static gboolean
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gst_v4l2_video_dec_close (GstVideoDecoder * decoder)
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{
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GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
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GST_DEBUG_OBJECT (self, "Closing");
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gst_v4l2_object_close (self->v4l2output);
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gst_v4l2_object_close (self->v4l2capture);
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gst_caps_replace (&self->probed_srccaps, NULL);
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gst_caps_replace (&self->probed_sinkcaps, NULL);
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return TRUE;
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}
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static gboolean
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gst_v4l2_video_dec_start (GstVideoDecoder * decoder)
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{
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GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
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GST_DEBUG_OBJECT (self, "Starting");
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gst_v4l2_object_unlock (self->v4l2output);
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g_atomic_int_set (&self->active, TRUE);
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self->output_flow = GST_FLOW_OK;
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return TRUE;
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}
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static gboolean
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gst_v4l2_video_dec_stop (GstVideoDecoder * decoder)
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{
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GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
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GST_DEBUG_OBJECT (self, "Stopping");
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2014-03-12 16:11:16 +00:00
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gst_v4l2_object_unlock (self->v4l2output);
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gst_v4l2_object_unlock (self->v4l2capture);
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/* Wait for capture thread to stop */
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gst_pad_stop_task (decoder->srcpad);
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2014-05-15 14:31:40 +00:00
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GST_VIDEO_DECODER_STREAM_LOCK (decoder);
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2014-03-12 16:11:16 +00:00
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self->output_flow = GST_FLOW_OK;
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GST_VIDEO_DECODER_STREAM_UNLOCK (decoder);
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2013-11-28 22:14:18 +00:00
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/* Should have been flushed already */
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g_assert (g_atomic_int_get (&self->active) == FALSE);
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g_assert (g_atomic_int_get (&self->processing) == FALSE);
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gst_v4l2_object_stop (self->v4l2output);
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gst_v4l2_object_stop (self->v4l2capture);
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if (self->input_state) {
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gst_video_codec_state_unref (self->input_state);
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self->input_state = NULL;
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}
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GST_DEBUG_OBJECT (self, "Stopped");
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return TRUE;
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}
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static gboolean
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gst_v4l2_video_dec_set_format (GstVideoDecoder * decoder,
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GstVideoCodecState * state)
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{
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2016-06-07 20:04:52 +00:00
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GstV4l2Error error = GST_V4L2_ERROR_INIT;
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2013-11-28 22:14:18 +00:00
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gboolean ret = TRUE;
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GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
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GST_DEBUG_OBJECT (self, "Setting format: %" GST_PTR_FORMAT, state->caps);
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if (self->input_state) {
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if (gst_v4l2_object_caps_equal (self->v4l2output, state->caps)) {
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GST_DEBUG_OBJECT (self, "Compatible caps");
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goto done;
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}
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gst_video_codec_state_unref (self->input_state);
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2014-03-12 16:56:18 +00:00
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self->input_state = NULL;
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2013-11-28 22:14:18 +00:00
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/* FIXME we probably need to do more work if pools are active */
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}
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2016-06-07 20:04:52 +00:00
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ret = gst_v4l2_object_set_format (self->v4l2output, state->caps, &error);
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2013-11-28 22:14:18 +00:00
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if (ret)
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self->input_state = gst_video_codec_state_ref (state);
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2016-06-07 20:04:52 +00:00
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else
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gst_v4l2_error (self, &error);
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2013-11-28 22:14:18 +00:00
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done:
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return ret;
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}
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static gboolean
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gst_v4l2_video_dec_flush (GstVideoDecoder * decoder)
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{
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GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
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2014-05-25 00:20:07 +00:00
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GST_DEBUG_OBJECT (self, "Flushed");
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2013-11-28 22:14:18 +00:00
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2014-05-25 00:20:07 +00:00
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/* Ensure the processing thread has stopped for the reverse playback
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* discount case */
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if (g_atomic_int_get (&self->processing)) {
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GST_VIDEO_DECODER_STREAM_UNLOCK (decoder);
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2013-11-28 22:14:18 +00:00
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2014-05-25 00:20:07 +00:00
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gst_v4l2_object_unlock (self->v4l2output);
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gst_v4l2_object_unlock (self->v4l2capture);
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gst_pad_stop_task (decoder->srcpad);
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2015-01-06 18:54:25 +00:00
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GST_VIDEO_DECODER_STREAM_LOCK (decoder);
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2014-05-25 00:20:07 +00:00
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}
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2014-03-16 16:01:10 +00:00
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2014-05-25 00:20:07 +00:00
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self->output_flow = GST_FLOW_OK;
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2014-05-25 00:00:14 +00:00
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2014-05-25 00:20:07 +00:00
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gst_v4l2_object_unlock_stop (self->v4l2output);
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gst_v4l2_object_unlock_stop (self->v4l2capture);
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2013-11-28 22:14:18 +00:00
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return TRUE;
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}
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static gboolean
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gst_v4l2_video_dec_negotiate (GstVideoDecoder * decoder)
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{
|
2015-01-09 21:59:53 +00:00
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GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
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/* We don't allow renegotiation without carefull disabling the pool */
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if (self->v4l2capture->pool &&
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gst_buffer_pool_is_active (GST_BUFFER_POOL (self->v4l2capture->pool)))
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return TRUE;
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2013-11-28 22:14:18 +00:00
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return GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder);
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}
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2014-12-12 13:31:36 +00:00
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static gboolean
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gst_v4l2_decoder_cmd (GstV4l2Object * v4l2object, guint cmd, guint flags)
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{
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struct v4l2_decoder_cmd dcmd = { 0, };
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GST_DEBUG_OBJECT (v4l2object->element,
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"sending v4l2 decoder command %u with flags %u", cmd, flags);
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if (!GST_V4L2_IS_OPEN (v4l2object))
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return FALSE;
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dcmd.cmd = cmd;
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dcmd.flags = flags;
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if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_DECODER_CMD, &dcmd) < 0)
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goto dcmd_failed;
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return TRUE;
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dcmd_failed:
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if (errno == ENOTTY) {
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GST_INFO_OBJECT (v4l2object->element,
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"Failed to send decoder command %u with flags %u for '%s'. (%s)",
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cmd, flags, v4l2object->videodev, g_strerror (errno));
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} else {
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GST_ERROR_OBJECT (v4l2object->element,
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"Failed to send decoder command %u with flags %u for '%s'. (%s)",
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cmd, flags, v4l2object->videodev, g_strerror (errno));
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}
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return FALSE;
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}
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|
|
|
2013-11-28 22:14:18 +00:00
|
|
|
static GstFlowReturn
|
|
|
|
gst_v4l2_video_dec_finish (GstVideoDecoder * decoder)
|
|
|
|
{
|
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
|
|
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
GstBuffer *buffer;
|
|
|
|
|
2014-05-23 21:18:16 +00:00
|
|
|
if (!g_atomic_int_get (&self->processing))
|
2013-11-28 22:14:18 +00:00
|
|
|
goto done;
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "Finishing decoding");
|
|
|
|
|
|
|
|
GST_VIDEO_DECODER_STREAM_UNLOCK (decoder);
|
2015-09-02 09:48:29 +00:00
|
|
|
|
|
|
|
if (gst_v4l2_decoder_cmd (self->v4l2output, V4L2_DEC_CMD_STOP, 0)) {
|
|
|
|
GstTask *task = decoder->srcpad->task;
|
|
|
|
|
|
|
|
/* If the decoder stop command succeeded, just wait until processing is
|
|
|
|
* finished */
|
|
|
|
GST_OBJECT_LOCK (task);
|
|
|
|
while (GST_TASK_STATE (task) == GST_TASK_STARTED)
|
|
|
|
GST_TASK_WAIT (task);
|
|
|
|
GST_OBJECT_UNLOCK (task);
|
|
|
|
ret = GST_FLOW_FLUSHING;
|
|
|
|
} else {
|
|
|
|
/* otherwise keep queuing empty buffers until the processing thread has
|
|
|
|
* stopped, _pool_process() will return FLUSHING when that happened */
|
|
|
|
while (ret == GST_FLOW_OK) {
|
|
|
|
buffer = gst_buffer_new ();
|
|
|
|
ret =
|
|
|
|
gst_v4l2_buffer_pool_process (GST_V4L2_BUFFER_POOL (self->
|
|
|
|
v4l2output->pool), &buffer);
|
|
|
|
gst_buffer_unref (buffer);
|
|
|
|
}
|
2013-11-28 22:14:18 +00:00
|
|
|
}
|
|
|
|
|
2014-05-25 00:20:07 +00:00
|
|
|
/* and ensure the processing thread has stopped in case another error
|
|
|
|
* occured. */
|
|
|
|
gst_v4l2_object_unlock (self->v4l2capture);
|
|
|
|
gst_pad_stop_task (decoder->srcpad);
|
|
|
|
GST_VIDEO_DECODER_STREAM_LOCK (decoder);
|
2014-05-25 00:00:14 +00:00
|
|
|
|
2013-11-28 22:14:18 +00:00
|
|
|
if (ret == GST_FLOW_FLUSHING)
|
|
|
|
ret = self->output_flow;
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (decoder, "Done draining buffers");
|
|
|
|
|
|
|
|
done:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static GstVideoCodecFrame *
|
|
|
|
gst_v4l2_video_dec_get_oldest_frame (GstVideoDecoder * decoder)
|
|
|
|
{
|
|
|
|
GstVideoCodecFrame *frame = NULL;
|
|
|
|
GList *frames, *l;
|
|
|
|
gint count = 0;
|
|
|
|
|
|
|
|
frames = gst_video_decoder_get_frames (decoder);
|
|
|
|
|
|
|
|
for (l = frames; l != NULL; l = l->next) {
|
|
|
|
GstVideoCodecFrame *f = l->data;
|
|
|
|
|
|
|
|
if (!frame || frame->pts > f->pts)
|
|
|
|
frame = f;
|
|
|
|
|
|
|
|
count++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (frame) {
|
|
|
|
GST_LOG_OBJECT (decoder,
|
|
|
|
"Oldest frame is %d %" GST_TIME_FORMAT " and %d frames left",
|
|
|
|
frame->system_frame_number, GST_TIME_ARGS (frame->pts), count - 1);
|
|
|
|
gst_video_codec_frame_ref (frame);
|
|
|
|
}
|
|
|
|
|
|
|
|
g_list_free_full (frames, (GDestroyNotify) gst_video_codec_frame_unref);
|
|
|
|
|
|
|
|
return frame;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gst_v4l2_video_dec_loop (GstVideoDecoder * decoder)
|
|
|
|
{
|
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
|
2014-11-16 17:34:17 +00:00
|
|
|
GstV4l2BufferPool *v4l2_pool = GST_V4L2_BUFFER_POOL (self->v4l2capture->pool);
|
2013-11-28 22:14:18 +00:00
|
|
|
GstBufferPool *pool;
|
|
|
|
GstVideoCodecFrame *frame;
|
|
|
|
GstBuffer *buffer = NULL;
|
|
|
|
GstFlowReturn ret;
|
|
|
|
|
|
|
|
GST_LOG_OBJECT (decoder, "Allocate output buffer");
|
|
|
|
|
2014-11-16 17:34:17 +00:00
|
|
|
do {
|
|
|
|
/* We cannot use the base class allotate helper since it taking the internal
|
|
|
|
* stream lock. we know that the acquire may need to poll until more frames
|
|
|
|
* comes in and holding this lock would prevent that.
|
|
|
|
*/
|
|
|
|
pool = gst_video_decoder_get_buffer_pool (decoder);
|
2014-03-12 17:07:38 +00:00
|
|
|
|
2014-11-16 17:34:17 +00:00
|
|
|
/* Pool may be NULL if we started going to READY state */
|
|
|
|
if (pool == NULL) {
|
|
|
|
ret = GST_FLOW_FLUSHING;
|
|
|
|
goto beach;
|
|
|
|
}
|
2014-03-12 17:07:38 +00:00
|
|
|
|
2014-11-16 17:34:17 +00:00
|
|
|
ret = gst_buffer_pool_acquire_buffer (pool, &buffer, NULL);
|
|
|
|
g_object_unref (pool);
|
2013-11-28 22:14:18 +00:00
|
|
|
|
2014-11-16 17:34:17 +00:00
|
|
|
if (ret != GST_FLOW_OK)
|
|
|
|
goto beach;
|
|
|
|
|
|
|
|
GST_LOG_OBJECT (decoder, "Process output buffer");
|
|
|
|
ret = gst_v4l2_buffer_pool_process (v4l2_pool, &buffer);
|
2013-11-28 22:14:18 +00:00
|
|
|
|
2014-11-16 17:34:17 +00:00
|
|
|
} while (ret == GST_V4L2_FLOW_CORRUPTED_BUFFER);
|
2013-11-28 22:14:18 +00:00
|
|
|
|
|
|
|
if (ret != GST_FLOW_OK)
|
|
|
|
goto beach;
|
|
|
|
|
|
|
|
frame = gst_v4l2_video_dec_get_oldest_frame (decoder);
|
|
|
|
|
|
|
|
if (frame) {
|
|
|
|
frame->output_buffer = buffer;
|
|
|
|
buffer = NULL;
|
|
|
|
ret = gst_video_decoder_finish_frame (decoder, frame);
|
|
|
|
|
|
|
|
if (ret != GST_FLOW_OK)
|
|
|
|
goto beach;
|
|
|
|
} else {
|
|
|
|
GST_WARNING_OBJECT (decoder, "Decoder is producing too many buffers");
|
|
|
|
gst_buffer_unref (buffer);
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
beach:
|
2014-05-15 14:39:40 +00:00
|
|
|
GST_DEBUG_OBJECT (decoder, "Leaving output thread: %s",
|
|
|
|
gst_flow_get_name (ret));
|
2013-11-28 22:14:18 +00:00
|
|
|
|
|
|
|
gst_buffer_replace (&buffer, NULL);
|
|
|
|
self->output_flow = ret;
|
|
|
|
g_atomic_int_set (&self->processing, FALSE);
|
|
|
|
gst_v4l2_object_unlock (self->v4l2output);
|
|
|
|
gst_pad_pause_task (decoder->srcpad);
|
|
|
|
}
|
|
|
|
|
2014-05-23 21:54:20 +00:00
|
|
|
static void
|
|
|
|
gst_v4l2_video_dec_loop_stopped (GstV4l2VideoDec * self)
|
|
|
|
{
|
|
|
|
/* When flushing, decoding thread may never run */
|
|
|
|
if (g_atomic_int_get (&self->processing)) {
|
|
|
|
GST_DEBUG_OBJECT (self, "Early stop of decoding thread");
|
|
|
|
self->output_flow = GST_FLOW_FLUSHING;
|
|
|
|
g_atomic_int_set (&self->processing, FALSE);
|
|
|
|
}
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "Decoding task destroyed: %s",
|
|
|
|
gst_flow_get_name (self->output_flow));
|
|
|
|
}
|
|
|
|
|
2016-05-13 12:58:41 +00:00
|
|
|
static gboolean
|
2016-06-07 20:41:58 +00:00
|
|
|
gst_v4l2_video_remove_padding (GstCapsFeatures * features,
|
2016-05-13 12:58:41 +00:00
|
|
|
GstStructure * structure, gpointer user_data)
|
|
|
|
{
|
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (user_data);
|
|
|
|
GstVideoAlignment *align = &self->v4l2capture->align;
|
|
|
|
GstVideoInfo *info = &self->v4l2capture->info;
|
|
|
|
int width, height;
|
|
|
|
|
2016-06-07 20:41:58 +00:00
|
|
|
if (!gst_structure_get_int (structure, "width", &width))
|
2016-05-13 12:58:41 +00:00
|
|
|
return TRUE;
|
|
|
|
|
2016-06-07 20:41:58 +00:00
|
|
|
if (!gst_structure_get_int (structure, "height", &height))
|
2016-05-13 12:58:41 +00:00
|
|
|
return TRUE;
|
|
|
|
|
|
|
|
if (align->padding_left != 0 || align->padding_top != 0 ||
|
|
|
|
width != info->width + align->padding_right ||
|
|
|
|
height != info->height + align->padding_bottom)
|
|
|
|
return TRUE;
|
|
|
|
|
2016-06-07 20:41:58 +00:00
|
|
|
gst_structure_set (structure,
|
2016-05-13 12:58:41 +00:00
|
|
|
"width", G_TYPE_INT, width - align->padding_right,
|
|
|
|
"height", G_TYPE_INT, height - align->padding_bottom, NULL);
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2013-11-28 22:14:18 +00:00
|
|
|
static GstFlowReturn
|
|
|
|
gst_v4l2_video_dec_handle_frame (GstVideoDecoder * decoder,
|
|
|
|
GstVideoCodecFrame * frame)
|
|
|
|
{
|
2016-06-07 20:04:52 +00:00
|
|
|
GstV4l2Error error = GST_V4L2_ERROR_INIT;
|
2013-11-28 22:14:18 +00:00
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
|
|
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "Handling frame %d", frame->system_frame_number);
|
|
|
|
|
|
|
|
if (G_UNLIKELY (!g_atomic_int_get (&self->active)))
|
|
|
|
goto flushing;
|
|
|
|
|
|
|
|
if (G_UNLIKELY (!GST_V4L2_IS_ACTIVE (self->v4l2output))) {
|
2014-03-19 21:52:08 +00:00
|
|
|
if (!self->input_state)
|
|
|
|
goto not_negotiated;
|
2016-06-07 20:04:52 +00:00
|
|
|
if (!gst_v4l2_object_set_format (self->v4l2output, self->input_state->caps,
|
2016-06-07 20:41:58 +00:00
|
|
|
&error))
|
2013-11-28 22:14:18 +00:00
|
|
|
goto not_negotiated;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (G_UNLIKELY (!GST_V4L2_IS_ACTIVE (self->v4l2capture))) {
|
2014-03-16 17:39:32 +00:00
|
|
|
GstBufferPool *pool = GST_BUFFER_POOL (self->v4l2output->pool);
|
2013-11-28 22:14:18 +00:00
|
|
|
GstVideoInfo info;
|
|
|
|
GstVideoCodecState *output_state;
|
|
|
|
GstBuffer *codec_data;
|
2016-05-13 12:58:41 +00:00
|
|
|
GstCaps *acquired_caps, *available_caps, *caps, *filter;
|
2015-03-25 15:32:55 +00:00
|
|
|
GstStructure *st;
|
2013-11-28 22:14:18 +00:00
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "Sending header");
|
|
|
|
|
|
|
|
codec_data = self->input_state->codec_data;
|
|
|
|
|
|
|
|
/* We are running in byte-stream mode, so we don't know the headers, but
|
|
|
|
* we need to send something, otherwise the decoder will refuse to
|
|
|
|
* intialize.
|
|
|
|
*/
|
|
|
|
if (codec_data) {
|
|
|
|
gst_buffer_ref (codec_data);
|
|
|
|
} else {
|
|
|
|
codec_data = frame->input_buffer;
|
|
|
|
frame->input_buffer = NULL;
|
|
|
|
}
|
|
|
|
|
2014-04-15 20:41:46 +00:00
|
|
|
/* Ensure input internal pool is active */
|
|
|
|
if (!gst_buffer_pool_is_active (pool)) {
|
|
|
|
GstStructure *config = gst_buffer_pool_get_config (pool);
|
|
|
|
gst_buffer_pool_config_set_params (config, self->input_state->caps,
|
2014-05-06 16:58:59 +00:00
|
|
|
self->v4l2output->info.size, 2, 2);
|
2014-04-15 20:41:46 +00:00
|
|
|
|
|
|
|
/* There is no reason to refuse this config */
|
|
|
|
if (!gst_buffer_pool_set_config (pool, config))
|
|
|
|
goto activate_failed;
|
|
|
|
|
|
|
|
if (!gst_buffer_pool_set_active (pool, TRUE))
|
|
|
|
goto activate_failed;
|
|
|
|
}
|
2014-03-16 17:39:32 +00:00
|
|
|
|
2013-11-28 22:14:18 +00:00
|
|
|
GST_VIDEO_DECODER_STREAM_UNLOCK (decoder);
|
|
|
|
ret =
|
2013-12-18 08:56:35 +00:00
|
|
|
gst_v4l2_buffer_pool_process (GST_V4L2_BUFFER_POOL (self->
|
2014-04-29 17:05:41 +00:00
|
|
|
v4l2output->pool), &codec_data);
|
2013-11-28 22:14:18 +00:00
|
|
|
GST_VIDEO_DECODER_STREAM_LOCK (decoder);
|
|
|
|
|
|
|
|
gst_buffer_unref (codec_data);
|
|
|
|
|
2016-05-13 12:58:41 +00:00
|
|
|
/* For decoders G_FMT returns coded size, G_SELECTION returns visible size
|
|
|
|
* in the compose rectangle. gst_v4l2_object_acquire_format() checks both
|
|
|
|
* and returns the visible size as with/height and the coded size as
|
|
|
|
* padding. */
|
2014-03-13 18:24:51 +00:00
|
|
|
if (!gst_v4l2_object_acquire_format (self->v4l2capture, &info))
|
2013-11-28 22:14:18 +00:00
|
|
|
goto not_negotiated;
|
|
|
|
|
2015-03-25 15:32:55 +00:00
|
|
|
/* Create caps from the acquired format, remove the format field */
|
|
|
|
acquired_caps = gst_video_info_to_caps (&info);
|
|
|
|
st = gst_caps_get_structure (acquired_caps, 0);
|
|
|
|
gst_structure_remove_field (st, "format");
|
|
|
|
|
|
|
|
/* Probe currently available pixel formats */
|
2016-05-13 12:58:41 +00:00
|
|
|
available_caps = gst_v4l2_object_probe_caps (self->v4l2capture, NULL);
|
|
|
|
available_caps = gst_caps_make_writable (available_caps);
|
|
|
|
|
|
|
|
/* Replace coded size with visible size, we want to negotiate visible size
|
|
|
|
* with downstream, not coded size. */
|
|
|
|
gst_caps_map_in_place (available_caps, gst_v4l2_video_remove_padding, self);
|
|
|
|
|
|
|
|
filter = gst_caps_intersect_full (available_caps, acquired_caps,
|
|
|
|
GST_CAPS_INTERSECT_FIRST);
|
2015-03-25 15:32:55 +00:00
|
|
|
gst_caps_unref (acquired_caps);
|
2016-05-13 12:58:41 +00:00
|
|
|
gst_caps_unref (available_caps);
|
2015-03-25 15:32:55 +00:00
|
|
|
caps = gst_pad_peer_query_caps (decoder->srcpad, filter);
|
|
|
|
gst_caps_unref (filter);
|
|
|
|
|
2016-02-19 15:03:04 +00:00
|
|
|
GST_DEBUG_OBJECT (self, "Possible decoded caps: %" GST_PTR_FORMAT, caps);
|
2015-03-25 15:32:55 +00:00
|
|
|
if (gst_caps_is_empty (caps)) {
|
|
|
|
gst_caps_unref (caps);
|
|
|
|
goto not_negotiated;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Fixate pixel format */
|
2016-02-19 15:03:04 +00:00
|
|
|
caps = gst_caps_fixate (caps);
|
2015-03-25 15:32:55 +00:00
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "Chosen decoded caps: %" GST_PTR_FORMAT, caps);
|
|
|
|
|
|
|
|
/* Try to set negotiated format, on success replace acquired format */
|
2016-06-07 20:04:52 +00:00
|
|
|
if (gst_v4l2_object_set_format (self->v4l2capture, caps, &error))
|
2015-03-25 15:32:55 +00:00
|
|
|
gst_video_info_from_caps (&info, caps);
|
2016-06-07 20:04:52 +00:00
|
|
|
else
|
|
|
|
gst_v4l2_clear_error (&error);
|
2015-03-25 15:32:55 +00:00
|
|
|
gst_caps_unref (caps);
|
|
|
|
|
2013-11-28 22:14:18 +00:00
|
|
|
output_state = gst_video_decoder_set_output_state (decoder,
|
|
|
|
info.finfo->format, info.width, info.height, self->input_state);
|
|
|
|
|
|
|
|
/* Copy the rest of the information, there might be more in the future */
|
|
|
|
output_state->info.interlace_mode = info.interlace_mode;
|
|
|
|
gst_video_codec_state_unref (output_state);
|
|
|
|
|
|
|
|
if (!gst_video_decoder_negotiate (decoder)) {
|
|
|
|
if (GST_PAD_IS_FLUSHING (decoder->srcpad))
|
|
|
|
goto flushing;
|
|
|
|
else
|
|
|
|
goto not_negotiated;
|
|
|
|
}
|
2014-03-16 17:39:32 +00:00
|
|
|
|
|
|
|
/* Ensure our internal pool is activated */
|
|
|
|
if (!gst_buffer_pool_set_active (GST_BUFFER_POOL (self->v4l2capture->pool),
|
|
|
|
TRUE))
|
|
|
|
goto activate_failed;
|
2013-11-28 22:14:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (g_atomic_int_get (&self->processing) == FALSE) {
|
2014-05-23 22:25:49 +00:00
|
|
|
/* It's possible that the processing thread stopped due to an error */
|
|
|
|
if (self->output_flow != GST_FLOW_OK &&
|
|
|
|
self->output_flow != GST_FLOW_FLUSHING) {
|
2013-11-28 22:14:18 +00:00
|
|
|
GST_DEBUG_OBJECT (self, "Processing loop stopped with error, leaving");
|
|
|
|
ret = self->output_flow;
|
|
|
|
goto drop;
|
|
|
|
}
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "Starting decoding thread");
|
|
|
|
|
|
|
|
/* Start the processing task, when it quits, the task will disable input
|
|
|
|
* processing to unlock input if draining, or prevent potential block */
|
|
|
|
g_atomic_int_set (&self->processing, TRUE);
|
2014-05-23 21:28:13 +00:00
|
|
|
if (!gst_pad_start_task (decoder->srcpad,
|
2014-05-23 21:54:20 +00:00
|
|
|
(GstTaskFunction) gst_v4l2_video_dec_loop, self,
|
|
|
|
(GDestroyNotify) gst_v4l2_video_dec_loop_stopped))
|
2014-05-23 21:28:13 +00:00
|
|
|
goto start_task_failed;
|
2013-11-28 22:14:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (frame->input_buffer) {
|
|
|
|
GST_VIDEO_DECODER_STREAM_UNLOCK (decoder);
|
|
|
|
ret =
|
|
|
|
gst_v4l2_buffer_pool_process (GST_V4L2_BUFFER_POOL (self->v4l2output->
|
2014-04-29 17:05:41 +00:00
|
|
|
pool), &frame->input_buffer);
|
2013-11-28 22:14:18 +00:00
|
|
|
GST_VIDEO_DECODER_STREAM_LOCK (decoder);
|
|
|
|
|
|
|
|
if (ret == GST_FLOW_FLUSHING) {
|
|
|
|
if (g_atomic_int_get (&self->processing) == FALSE)
|
|
|
|
ret = self->output_flow;
|
2014-05-23 21:01:02 +00:00
|
|
|
goto drop;
|
|
|
|
} else if (ret != GST_FLOW_OK) {
|
|
|
|
goto process_failed;
|
2013-11-28 22:14:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* No need to keep input arround */
|
|
|
|
gst_buffer_replace (&frame->input_buffer, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
gst_video_codec_frame_unref (frame);
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
/* ERRORS */
|
|
|
|
not_negotiated:
|
|
|
|
{
|
|
|
|
GST_ERROR_OBJECT (self, "not negotiated");
|
|
|
|
ret = GST_FLOW_NOT_NEGOTIATED;
|
2016-06-07 20:04:52 +00:00
|
|
|
gst_v4l2_error (self, &error);
|
2013-11-28 22:14:18 +00:00
|
|
|
goto drop;
|
|
|
|
}
|
2014-03-16 17:39:32 +00:00
|
|
|
activate_failed:
|
|
|
|
{
|
|
|
|
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
|
2014-04-15 20:41:46 +00:00
|
|
|
(_("Failed to allocate required memory.")),
|
2014-03-16 17:39:32 +00:00
|
|
|
("Buffer pool activation failed"));
|
2014-05-23 21:01:02 +00:00
|
|
|
ret = GST_FLOW_ERROR;
|
|
|
|
goto drop;
|
2014-03-16 17:39:32 +00:00
|
|
|
}
|
2013-11-28 22:14:18 +00:00
|
|
|
flushing:
|
|
|
|
{
|
|
|
|
ret = GST_FLOW_FLUSHING;
|
|
|
|
goto drop;
|
|
|
|
}
|
2014-05-23 21:28:13 +00:00
|
|
|
|
|
|
|
start_task_failed:
|
|
|
|
{
|
|
|
|
GST_ELEMENT_ERROR (self, RESOURCE, FAILED,
|
|
|
|
(_("Failed to start decoding thread.")), (NULL));
|
|
|
|
g_atomic_int_set (&self->processing, FALSE);
|
|
|
|
ret = GST_FLOW_ERROR;
|
|
|
|
goto drop;
|
|
|
|
}
|
2014-05-23 21:01:02 +00:00
|
|
|
process_failed:
|
|
|
|
{
|
|
|
|
GST_ELEMENT_ERROR (self, RESOURCE, FAILED,
|
|
|
|
(_("Failed to process frame.")),
|
|
|
|
("Maybe be due to not enough memory or failing driver"));
|
|
|
|
ret = GST_FLOW_ERROR;
|
|
|
|
goto drop;
|
|
|
|
}
|
2013-11-28 22:14:18 +00:00
|
|
|
drop:
|
|
|
|
{
|
|
|
|
gst_video_decoder_drop_frame (decoder, frame);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
gst_v4l2_video_dec_decide_allocation (GstVideoDecoder * decoder,
|
|
|
|
GstQuery * query)
|
|
|
|
{
|
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
|
2013-12-19 20:26:52 +00:00
|
|
|
GstClockTime latency;
|
2013-11-28 22:14:18 +00:00
|
|
|
gboolean ret = FALSE;
|
|
|
|
|
|
|
|
if (gst_v4l2_object_decide_allocation (self->v4l2capture, query))
|
|
|
|
ret = GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (decoder,
|
|
|
|
query);
|
|
|
|
|
2014-09-04 19:11:40 +00:00
|
|
|
latency = self->v4l2capture->min_buffers * self->v4l2capture->duration;
|
2013-12-19 20:26:52 +00:00
|
|
|
gst_video_decoder_set_latency (decoder, latency, latency);
|
|
|
|
|
2013-11-28 22:14:18 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
gst_v4l2_video_dec_src_query (GstVideoDecoder * decoder, GstQuery * query)
|
|
|
|
{
|
|
|
|
gboolean ret = TRUE;
|
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
|
|
|
|
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
|
|
case GST_QUERY_CAPS:{
|
|
|
|
GstCaps *filter, *result = NULL;
|
2014-03-06 23:13:14 +00:00
|
|
|
GstPad *pad = GST_VIDEO_DECODER_SRC_PAD (decoder);
|
|
|
|
|
2013-11-28 22:14:18 +00:00
|
|
|
gst_query_parse_caps (query, &filter);
|
|
|
|
|
|
|
|
if (self->probed_srccaps)
|
|
|
|
result = gst_caps_ref (self->probed_srccaps);
|
|
|
|
else
|
2014-03-06 23:13:14 +00:00
|
|
|
result = gst_pad_get_pad_template_caps (pad);
|
2013-11-28 22:14:18 +00:00
|
|
|
|
|
|
|
if (filter) {
|
|
|
|
GstCaps *tmp = result;
|
|
|
|
result =
|
|
|
|
gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
|
|
|
|
gst_caps_unref (tmp);
|
|
|
|
}
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "Returning src caps %" GST_PTR_FORMAT, result);
|
|
|
|
|
|
|
|
gst_query_set_caps_result (query, result);
|
|
|
|
gst_caps_unref (result);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
default:
|
|
|
|
ret = GST_VIDEO_DECODER_CLASS (parent_class)->src_query (decoder, query);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2015-01-13 21:49:34 +00:00
|
|
|
static GstCaps *
|
|
|
|
gst_v4l2_video_dec_sink_getcaps (GstVideoDecoder * decoder, GstCaps * filter)
|
2013-11-28 22:14:18 +00:00
|
|
|
{
|
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
|
2015-01-13 21:49:34 +00:00
|
|
|
GstCaps *result;
|
2013-11-28 22:14:18 +00:00
|
|
|
|
2015-01-13 21:49:34 +00:00
|
|
|
result = gst_video_decoder_proxy_getcaps (decoder, self->probed_sinkcaps,
|
|
|
|
filter);
|
2013-11-28 22:14:18 +00:00
|
|
|
|
2015-01-13 21:49:34 +00:00
|
|
|
GST_DEBUG_OBJECT (self, "Returning sink caps %" GST_PTR_FORMAT, result);
|
2013-11-28 22:14:18 +00:00
|
|
|
|
2015-01-13 21:49:34 +00:00
|
|
|
return result;
|
2013-11-28 22:14:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
gst_v4l2_video_dec_sink_event (GstVideoDecoder * decoder, GstEvent * event)
|
|
|
|
{
|
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
|
2014-05-25 00:20:07 +00:00
|
|
|
gboolean ret;
|
2013-11-28 22:14:18 +00:00
|
|
|
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
|
|
case GST_EVENT_FLUSH_START:
|
2014-05-23 21:19:07 +00:00
|
|
|
GST_DEBUG_OBJECT (self, "flush start");
|
2013-11-28 22:14:18 +00:00
|
|
|
gst_v4l2_object_unlock (self->v4l2output);
|
|
|
|
gst_v4l2_object_unlock (self->v4l2capture);
|
2014-05-25 00:20:07 +00:00
|
|
|
break;
|
2013-11-28 22:14:18 +00:00
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2014-05-25 00:20:07 +00:00
|
|
|
ret = GST_VIDEO_DECODER_CLASS (parent_class)->sink_event (decoder, event);
|
|
|
|
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
|
|
case GST_EVENT_FLUSH_START:
|
|
|
|
/* The processing thread should stop now, wait for it */
|
|
|
|
gst_pad_stop_task (decoder->srcpad);
|
|
|
|
GST_DEBUG_OBJECT (self, "flush start done");
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
2013-11-28 22:14:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static GstStateChangeReturn
|
|
|
|
gst_v4l2_video_dec_change_state (GstElement * element,
|
|
|
|
GstStateChange transition)
|
|
|
|
{
|
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (element);
|
2014-05-25 00:20:07 +00:00
|
|
|
GstVideoDecoder *decoder = GST_VIDEO_DECODER (element);
|
2013-11-28 22:14:18 +00:00
|
|
|
|
|
|
|
if (transition == GST_STATE_CHANGE_PAUSED_TO_READY) {
|
|
|
|
g_atomic_int_set (&self->active, FALSE);
|
|
|
|
gst_v4l2_object_unlock (self->v4l2output);
|
|
|
|
gst_v4l2_object_unlock (self->v4l2capture);
|
2014-05-25 00:20:07 +00:00
|
|
|
gst_pad_stop_task (decoder->srcpad);
|
2013-11-28 22:14:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gst_v4l2_video_dec_dispose (GObject * object)
|
|
|
|
{
|
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (object);
|
|
|
|
|
|
|
|
gst_caps_replace (&self->probed_sinkcaps, NULL);
|
|
|
|
gst_caps_replace (&self->probed_srccaps, NULL);
|
|
|
|
|
|
|
|
G_OBJECT_CLASS (parent_class)->dispose (object);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gst_v4l2_video_dec_finalize (GObject * object)
|
|
|
|
{
|
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (object);
|
|
|
|
|
|
|
|
gst_v4l2_object_destroy (self->v4l2capture);
|
|
|
|
gst_v4l2_object_destroy (self->v4l2output);
|
|
|
|
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2014-03-16 10:38:07 +00:00
|
|
|
gst_v4l2_video_dec_init (GstV4l2VideoDec * self)
|
2013-12-18 08:56:35 +00:00
|
|
|
{
|
2014-03-16 10:38:07 +00:00
|
|
|
/* V4L2 object are created in subinstance_init */
|
2013-12-18 08:56:35 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2014-03-16 10:38:07 +00:00
|
|
|
gst_v4l2_video_dec_subinstance_init (GTypeInstance * instance, gpointer g_class)
|
2013-11-28 22:14:18 +00:00
|
|
|
{
|
2014-03-16 10:38:07 +00:00
|
|
|
GstV4l2VideoDecClass *klass = GST_V4L2_VIDEO_DEC_CLASS (g_class);
|
|
|
|
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (instance);
|
|
|
|
GstVideoDecoder *decoder = GST_VIDEO_DECODER (instance);
|
2013-11-28 22:14:18 +00:00
|
|
|
|
|
|
|
gst_video_decoder_set_packetized (decoder, TRUE);
|
|
|
|
|
|
|
|
self->v4l2output = gst_v4l2_object_new (GST_ELEMENT (self),
|
2014-03-16 10:38:07 +00:00
|
|
|
V4L2_BUF_TYPE_VIDEO_OUTPUT, klass->default_device,
|
2013-11-28 22:14:18 +00:00
|
|
|
gst_v4l2_get_output, gst_v4l2_set_output, NULL);
|
|
|
|
self->v4l2output->no_initial_format = TRUE;
|
|
|
|
self->v4l2output->keep_aspect = FALSE;
|
|
|
|
|
|
|
|
self->v4l2capture = gst_v4l2_object_new (GST_ELEMENT (self),
|
2014-03-16 10:38:07 +00:00
|
|
|
V4L2_BUF_TYPE_VIDEO_CAPTURE, klass->default_device,
|
2013-11-28 22:14:18 +00:00
|
|
|
gst_v4l2_get_input, gst_v4l2_set_input, NULL);
|
|
|
|
self->v4l2capture->no_initial_format = TRUE;
|
|
|
|
self->v4l2output->keep_aspect = FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gst_v4l2_video_dec_class_init (GstV4l2VideoDecClass * klass)
|
|
|
|
{
|
|
|
|
GstElementClass *element_class;
|
|
|
|
GObjectClass *gobject_class;
|
|
|
|
GstVideoDecoderClass *video_decoder_class;
|
|
|
|
|
2013-12-18 08:56:35 +00:00
|
|
|
parent_class = g_type_class_peek_parent (klass);
|
|
|
|
|
2013-11-28 22:14:18 +00:00
|
|
|
element_class = (GstElementClass *) klass;
|
|
|
|
gobject_class = (GObjectClass *) klass;
|
|
|
|
video_decoder_class = (GstVideoDecoderClass *) klass;
|
|
|
|
|
2014-05-03 01:38:30 +00:00
|
|
|
GST_DEBUG_CATEGORY_INIT (gst_v4l2_video_dec_debug, "v4l2videodec", 0,
|
|
|
|
"V4L2 Video Decoder");
|
|
|
|
|
2013-11-28 22:14:18 +00:00
|
|
|
gst_element_class_set_static_metadata (element_class,
|
|
|
|
"V4L2 Video Decoder",
|
|
|
|
"Codec/Decoder/Video",
|
|
|
|
"Decode video streams via V4L2 API",
|
|
|
|
"Nicolas Dufresne <nicolas.dufresne@collabora.co.uk>");
|
|
|
|
|
|
|
|
gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_dispose);
|
|
|
|
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_finalize);
|
|
|
|
gobject_class->set_property =
|
|
|
|
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_set_property);
|
|
|
|
gobject_class->get_property =
|
|
|
|
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_get_property);
|
|
|
|
|
|
|
|
video_decoder_class->open = GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_open);
|
|
|
|
video_decoder_class->close = GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_close);
|
|
|
|
video_decoder_class->start = GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_start);
|
|
|
|
video_decoder_class->stop = GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_stop);
|
|
|
|
video_decoder_class->finish = GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_finish);
|
|
|
|
video_decoder_class->flush = GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_flush);
|
|
|
|
video_decoder_class->set_format =
|
|
|
|
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_set_format);
|
|
|
|
video_decoder_class->negotiate =
|
|
|
|
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_negotiate);
|
|
|
|
video_decoder_class->decide_allocation =
|
|
|
|
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_decide_allocation);
|
|
|
|
/* FIXME propose_allocation or not ? */
|
|
|
|
video_decoder_class->handle_frame =
|
|
|
|
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_handle_frame);
|
2015-01-13 21:49:34 +00:00
|
|
|
video_decoder_class->getcaps =
|
|
|
|
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_sink_getcaps);
|
2013-11-28 22:14:18 +00:00
|
|
|
video_decoder_class->src_query =
|
|
|
|
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_src_query);
|
|
|
|
video_decoder_class->sink_event =
|
|
|
|
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_sink_event);
|
|
|
|
|
|
|
|
element_class->change_state =
|
|
|
|
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_change_state);
|
|
|
|
|
2014-05-15 22:08:53 +00:00
|
|
|
gst_v4l2_object_install_m2m_properties_helper (gobject_class);
|
2013-12-18 08:56:35 +00:00
|
|
|
}
|
|
|
|
|
2014-03-16 10:38:07 +00:00
|
|
|
static void
|
|
|
|
gst_v4l2_video_dec_subclass_init (gpointer g_class, gpointer data)
|
|
|
|
{
|
|
|
|
GstV4l2VideoDecClass *klass = GST_V4L2_VIDEO_DEC_CLASS (g_class);
|
|
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
|
|
|
|
GstV4l2VideoDecCData *cdata = data;
|
|
|
|
|
|
|
|
klass->default_device = cdata->device;
|
|
|
|
|
|
|
|
/* Note: gst_pad_template_new() take the floating ref from the caps */
|
|
|
|
gst_element_class_add_pad_template (element_class,
|
|
|
|
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
|
|
|
|
cdata->sink_caps));
|
|
|
|
gst_element_class_add_pad_template (element_class,
|
|
|
|
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
|
|
|
|
cdata->src_caps));
|
|
|
|
|
|
|
|
g_free (cdata);
|
|
|
|
}
|
|
|
|
|
2013-12-18 08:56:35 +00:00
|
|
|
/* Probing functions */
|
2014-05-03 01:38:30 +00:00
|
|
|
gboolean
|
|
|
|
gst_v4l2_is_video_dec (GstCaps * sink_caps, GstCaps * src_caps)
|
2013-12-18 08:56:35 +00:00
|
|
|
{
|
2014-05-03 01:38:30 +00:00
|
|
|
gboolean ret = FALSE;
|
2013-12-18 08:56:35 +00:00
|
|
|
|
2014-05-03 01:38:30 +00:00
|
|
|
if (gst_caps_is_subset (sink_caps, gst_v4l2_object_get_codec_caps ())
|
|
|
|
&& gst_caps_is_subset (src_caps, gst_v4l2_object_get_raw_caps ()))
|
|
|
|
ret = TRUE;
|
2013-12-18 08:56:35 +00:00
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
gboolean
|
2014-05-03 01:38:30 +00:00
|
|
|
gst_v4l2_video_dec_register (GstPlugin * plugin, const gchar * basename,
|
|
|
|
const gchar * device_path, GstCaps * sink_caps, GstCaps * src_caps)
|
2013-12-18 08:56:35 +00:00
|
|
|
{
|
2014-05-03 01:38:30 +00:00
|
|
|
GTypeQuery type_query;
|
|
|
|
GTypeInfo type_info = { 0, };
|
|
|
|
GType type, subtype;
|
|
|
|
gchar *type_name;
|
|
|
|
GstV4l2VideoDecCData *cdata;
|
|
|
|
|
|
|
|
cdata = g_new0 (GstV4l2VideoDecCData, 1);
|
|
|
|
cdata->device = g_strdup (device_path);
|
|
|
|
cdata->sink_caps = gst_caps_ref (sink_caps);
|
|
|
|
cdata->src_caps = gst_caps_ref (src_caps);
|
|
|
|
|
|
|
|
type = gst_v4l2_video_dec_get_type ();
|
|
|
|
g_type_query (type, &type_query);
|
|
|
|
memset (&type_info, 0, sizeof (type_info));
|
|
|
|
type_info.class_size = type_query.class_size;
|
|
|
|
type_info.instance_size = type_query.instance_size;
|
|
|
|
type_info.class_init = gst_v4l2_video_dec_subclass_init;
|
|
|
|
type_info.class_data = cdata;
|
|
|
|
type_info.instance_init = gst_v4l2_video_dec_subinstance_init;
|
|
|
|
|
|
|
|
type_name = g_strdup_printf ("v4l2%sdec", basename);
|
|
|
|
subtype = g_type_register_static (type, type_name, &type_info, 0);
|
|
|
|
|
|
|
|
gst_element_register (plugin, type_name, GST_RANK_PRIMARY + 1, subtype);
|
|
|
|
|
|
|
|
g_free (type_name);
|
2013-12-18 08:56:35 +00:00
|
|
|
|
|
|
|
return TRUE;
|
2013-11-28 22:14:18 +00:00
|
|
|
}
|