mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-22 08:17:01 +00:00
1412 lines
41 KiB
C
1412 lines
41 KiB
C
/* GStreamer
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* Copyright (C) 2008 David Schleef <ds@schleef.org>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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 "gstbasevideodecoder.h"
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#include <string.h>
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GST_DEBUG_CATEGORY (basevideodecoder_debug);
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#define GST_CAT_DEFAULT basevideodecoder_debug
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enum
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{
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PROP_0,
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PROP_PACKETIZED,
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PROP_SINK_CLIPPING
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};
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static GstFlowReturn gst_base_video_decoder_drain (GstBaseVideoDecoder * dec,
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gboolean at_eos);
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GST_BOILERPLATE (GstBaseVideoDecoder, gst_base_video_decoder,
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GstElement, GST_TYPE_ELEMENT);
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typedef struct _Timestamp Timestamp;
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struct _Timestamp
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{
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guint64 offset;
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GstClockTime timestamp;
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GstClockTime duration;
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};
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static void
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gst_base_video_decoder_add_timestamp (GstBaseVideoDecoder * base_video_decoder,
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GstBuffer * buffer)
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{
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Timestamp *ts;
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ts = g_slice_new (Timestamp);
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GST_DEBUG ("adding timestamp %" GST_TIME_FORMAT " %" GST_TIME_FORMAT,
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GST_TIME_ARGS (base_video_decoder->input_offset),
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
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ts->offset = base_video_decoder->input_offset;
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ts->timestamp = GST_BUFFER_TIMESTAMP (buffer);
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ts->duration = GST_BUFFER_DURATION (buffer);
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base_video_decoder->timestamps =
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g_list_append (base_video_decoder->timestamps, ts);
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}
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static void
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gst_base_video_decoder_get_timestamp_at_offset (GstBaseVideoDecoder *
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base_video_decoder, guint64 offset, GstClockTime * timestamp,
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GstClockTime * duration)
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{
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GList *g;
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*timestamp = GST_CLOCK_TIME_NONE;
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*duration = GST_CLOCK_TIME_NONE;
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g = base_video_decoder->timestamps;
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while (g) {
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Timestamp *ts;
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ts = g->data;
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if (ts->offset <= offset) {
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*timestamp = ts->timestamp;
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*duration = ts->duration;
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g_slice_free (Timestamp, ts);
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g = g_list_next (g);
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base_video_decoder->timestamps =
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g_list_remove (base_video_decoder->timestamps, ts);
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} else {
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break;
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}
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}
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GST_DEBUG ("got timestamp %" GST_TIME_FORMAT " %" GST_TIME_FORMAT,
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GST_TIME_ARGS (offset), GST_TIME_ARGS (*timestamp));
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}
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static guint64
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gst_base_video_decoder_get_timestamp (GstBaseVideoDecoder * base_video_decoder,
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gint picture_number)
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{
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if (base_video_decoder->state.fps_d == 0) {
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return -1;
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}
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if (picture_number < base_video_decoder->base_picture_number) {
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return base_video_decoder->timestamp_offset -
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(gint64) gst_util_uint64_scale (base_video_decoder->base_picture_number
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- picture_number, base_video_decoder->state.fps_d * GST_SECOND,
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base_video_decoder->state.fps_n);
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} else {
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return base_video_decoder->timestamp_offset +
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gst_util_uint64_scale (picture_number -
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base_video_decoder->base_picture_number,
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base_video_decoder->state.fps_d * GST_SECOND,
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base_video_decoder->state.fps_n);
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}
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}
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static guint64
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gst_base_video_decoder_get_field_timestamp (GstBaseVideoDecoder *
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base_video_decoder, gint field_offset)
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{
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if (base_video_decoder->state.fps_d == 0) {
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return GST_CLOCK_TIME_NONE;
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}
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if (field_offset < 0) {
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GST_WARNING ("field offset < 0");
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return GST_CLOCK_TIME_NONE;
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}
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return base_video_decoder->timestamp_offset +
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gst_util_uint64_scale (field_offset,
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base_video_decoder->state.fps_d * GST_SECOND,
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base_video_decoder->state.fps_n * 2);
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}
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static guint64
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gst_base_video_decoder_get_field_duration (GstBaseVideoDecoder *
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base_video_decoder, gint n_fields)
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{
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if (base_video_decoder->state.fps_d == 0) {
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return GST_CLOCK_TIME_NONE;
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}
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if (n_fields < 0) {
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GST_WARNING ("n_fields < 0");
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return GST_CLOCK_TIME_NONE;
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}
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return gst_util_uint64_scale (n_fields,
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base_video_decoder->state.fps_d * GST_SECOND,
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base_video_decoder->state.fps_n * 2);
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}
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static GstVideoFrame *
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gst_base_video_decoder_new_frame (GstBaseVideoDecoder * base_video_decoder)
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{
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GstBaseVideoDecoderClass *base_video_decoder_class =
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GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
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GstVideoFrame *frame;
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if (base_video_decoder_class->create_frame)
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frame = base_video_decoder_class->create_frame (base_video_decoder);
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else
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frame = gst_video_frame_new ();
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frame->system_frame_number = base_video_decoder->system_frame_number;
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base_video_decoder->system_frame_number++;
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frame->decode_frame_number = frame->system_frame_number -
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base_video_decoder->reorder_depth;
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return frame;
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}
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static void
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gst_base_video_decoder_reset (GstBaseVideoDecoder * base_video_decoder)
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{
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GST_DEBUG ("reset");
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base_video_decoder->discont = TRUE;
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base_video_decoder->have_sync = FALSE;
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base_video_decoder->timestamp_offset = GST_CLOCK_TIME_NONE;
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base_video_decoder->system_frame_number = 0;
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base_video_decoder->presentation_frame_number = 0;
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base_video_decoder->base_picture_number = 0;
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base_video_decoder->last_timestamp = GST_CLOCK_TIME_NONE;
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base_video_decoder->input_offset = 0;
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base_video_decoder->frame_offset = 0;
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/* This function could be called from finalize() */
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if (base_video_decoder->input_adapter) {
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gst_adapter_clear (base_video_decoder->input_adapter);
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}
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if (base_video_decoder->current_frame) {
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gst_video_frame_unref (base_video_decoder->current_frame);
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base_video_decoder->current_frame = NULL;
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}
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base_video_decoder->have_src_caps = FALSE;
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GST_OBJECT_LOCK (base_video_decoder);
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base_video_decoder->earliest_time = GST_CLOCK_TIME_NONE;
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base_video_decoder->proportion = 0.5;
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GST_OBJECT_UNLOCK (base_video_decoder);
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}
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static void
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gst_base_video_decoder_flush (GstBaseVideoDecoder * base_video_decoder)
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{
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GstBaseVideoDecoderClass *base_video_decoder_class;
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gst_base_video_decoder_reset (base_video_decoder);
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base_video_decoder_class =
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GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
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if (base_video_decoder_class->flush)
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base_video_decoder_class->flush (base_video_decoder);
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}
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static gboolean
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gst_base_video_decoder_sink_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstBaseVideoDecoder *base_video_decoder;
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GstBaseVideoDecoderClass *base_video_decoder_class;
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GstStructure *structure;
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const GValue *codec_data;
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GstVideoState *state;
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gboolean ret = TRUE;
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base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
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base_video_decoder_class =
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GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
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GST_DEBUG ("setcaps %" GST_PTR_FORMAT, caps);
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state = &base_video_decoder->state;
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if (state->codec_data) {
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gst_buffer_unref (state->codec_data);
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}
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memset (state, 0, sizeof (GstVideoState));
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structure = gst_caps_get_structure (caps, 0);
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gst_video_format_parse_caps (caps, NULL, &state->width, &state->height);
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gst_video_parse_caps_framerate (caps, &state->fps_n, &state->fps_d);
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gst_video_parse_caps_pixel_aspect_ratio (caps, &state->par_n, &state->par_d);
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gst_structure_get_boolean (structure, "interlaced", &state->interlaced);
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codec_data = gst_structure_get_value (structure, "codec_data");
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if (codec_data && G_VALUE_TYPE (codec_data) == GST_TYPE_BUFFER)
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state->codec_data = gst_value_get_buffer (codec_data);
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if (base_video_decoder_class->set_sink_caps)
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ret = base_video_decoder_class->set_sink_caps (base_video_decoder, caps);
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g_object_unref (base_video_decoder);
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return ret;
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}
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static gboolean
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gst_base_video_decoder_sink_event (GstPad * pad, GstEvent * event)
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{
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GstBaseVideoDecoder *base_video_decoder;
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GstBaseVideoDecoderClass *base_video_decoder_class;
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gboolean ret = FALSE;
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base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
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base_video_decoder_class =
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GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_EOS:
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{
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if (!base_video_decoder->packetized)
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gst_base_video_decoder_drain (base_video_decoder, TRUE);
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ret =
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gst_pad_push_event (GST_BASE_VIDEO_DECODER_SRC_PAD
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(base_video_decoder), event);
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}
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break;
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case GST_EVENT_NEWSEGMENT:
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{
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gboolean update;
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double rate;
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double applied_rate;
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GstFormat format;
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gint64 start;
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gint64 stop;
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gint64 position;
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GstSegment *segment = &base_video_decoder->segment;
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gst_event_parse_new_segment_full (event, &update, &rate,
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&applied_rate, &format, &start, &stop, &position);
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if (format != GST_FORMAT_TIME)
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goto newseg_wrong_format;
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if (!update) {
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gst_base_video_decoder_flush (base_video_decoder);
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}
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base_video_decoder->timestamp_offset = start;
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gst_segment_set_newsegment_full (segment,
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update, rate, applied_rate, format, start, stop, position);
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base_video_decoder->have_segment = TRUE;
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GST_WARNING ("new segment: format %d rate %g start %" GST_TIME_FORMAT
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" stop %" GST_TIME_FORMAT
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" position %" GST_TIME_FORMAT
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" update %d",
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format, rate,
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GST_TIME_ARGS (segment->start),
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GST_TIME_ARGS (segment->stop), GST_TIME_ARGS (segment->time), update);
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ret =
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gst_pad_push_event (GST_BASE_VIDEO_DECODER_SRC_PAD
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(base_video_decoder), event);
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}
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break;
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case GST_EVENT_FLUSH_STOP:{
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GST_OBJECT_LOCK (base_video_decoder);
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base_video_decoder->earliest_time = GST_CLOCK_TIME_NONE;
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base_video_decoder->proportion = 0.5;
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GST_OBJECT_UNLOCK (base_video_decoder);
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}
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default:
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/* FIXME this changes the order of events */
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ret =
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gst_pad_push_event (GST_BASE_VIDEO_DECODER_SRC_PAD
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(base_video_decoder), event);
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break;
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}
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done:
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gst_object_unref (base_video_decoder);
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return ret;
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newseg_wrong_format:
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{
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GST_DEBUG_OBJECT (base_video_decoder, "received non TIME newsegment");
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gst_event_unref (event);
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goto done;
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}
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}
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#if 0
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static gboolean
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gst_base_video_decoder_sink_convert (GstPad * pad,
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GstFormat src_format, gint64 src_value,
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GstFormat * dest_format, gint64 * dest_value)
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{
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gboolean res = TRUE;
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GstBaseVideoDecoder *enc;
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if (src_format == *dest_format) {
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*dest_value = src_value;
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return TRUE;
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}
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enc = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
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/* FIXME: check if we are in a decoding state */
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switch (src_format) {
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case GST_FORMAT_BYTES:
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switch (*dest_format) {
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#if 0
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case GST_FORMAT_DEFAULT:
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*dest_value = gst_util_uint64_scale_int (src_value, 1,
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enc->bytes_per_picture);
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break;
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#endif
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case GST_FORMAT_TIME:
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/* seems like a rather silly conversion, implement me if you like */
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default:
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res = FALSE;
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}
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break;
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case GST_FORMAT_DEFAULT:
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switch (*dest_format) {
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case GST_FORMAT_TIME:
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*dest_value = gst_util_uint64_scale (src_value,
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GST_SECOND * enc->fps_d, enc->fps_n);
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break;
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#if 0
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case GST_FORMAT_BYTES:
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*dest_value = gst_util_uint64_scale_int (src_value,
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enc->bytes_per_picture, 1);
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break;
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#endif
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default:
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res = FALSE;
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}
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break;
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default:
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res = FALSE;
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break;
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}
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}
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#endif
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static gboolean
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gst_base_video_decoder_src_convert (GstPad * pad,
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GstFormat src_format, gint64 src_value,
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GstFormat * dest_format, gint64 * dest_value)
|
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{
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gboolean res = TRUE;
|
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GstBaseVideoDecoder *enc;
|
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|
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if (src_format == *dest_format) {
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*dest_value = src_value;
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return TRUE;
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}
|
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|
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enc = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
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|
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/* FIXME: check if we are in a encoding state */
|
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|
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GST_DEBUG ("src convert");
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switch (src_format) {
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#if 0
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case GST_FORMAT_DEFAULT:
|
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switch (*dest_format) {
|
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case GST_FORMAT_TIME:
|
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*dest_value = gst_util_uint64_scale (granulepos_to_frame (src_value),
|
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enc->fps_d * GST_SECOND, enc->fps_n);
|
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break;
|
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default:
|
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res = FALSE;
|
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}
|
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break;
|
|
case GST_FORMAT_TIME:
|
|
switch (*dest_format) {
|
|
case GST_FORMAT_DEFAULT:
|
|
{
|
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*dest_value = gst_util_uint64_scale (src_value,
|
|
enc->fps_n, enc->fps_d * GST_SECOND);
|
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break;
|
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}
|
|
default:
|
|
res = FALSE;
|
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break;
|
|
}
|
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break;
|
|
#endif
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default:
|
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res = FALSE;
|
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break;
|
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}
|
|
|
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gst_object_unref (enc);
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|
|
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return res;
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}
|
|
|
|
static gboolean
|
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gst_base_video_decoder_src_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstBaseVideoDecoder *base_video_decoder;
|
|
gboolean res = FALSE;
|
|
|
|
base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEEK:
|
|
{
|
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GstFormat format, tformat;
|
|
gdouble rate;
|
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GstEvent *real_seek;
|
|
GstSeekFlags flags;
|
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GstSeekType cur_type, stop_type;
|
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gint64 cur, stop;
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gint64 tcur, tstop;
|
|
|
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GST_DEBUG ("seek event");
|
|
|
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gst_event_parse_seek (event, &rate, &format, &flags, &cur_type,
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&cur, &stop_type, &stop);
|
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gst_event_unref (event);
|
|
|
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tformat = GST_FORMAT_TIME;
|
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res =
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gst_base_video_decoder_src_convert (pad, format, cur, &tformat,
|
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&tcur);
|
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if (!res)
|
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goto convert_error;
|
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res =
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gst_base_video_decoder_src_convert (pad, format, stop, &tformat,
|
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&tstop);
|
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if (!res)
|
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goto convert_error;
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|
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real_seek = gst_event_new_seek (rate, GST_FORMAT_TIME,
|
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flags, cur_type, tcur, stop_type, tstop);
|
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|
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res =
|
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gst_pad_push_event (GST_BASE_VIDEO_DECODER_SINK_PAD
|
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(base_video_decoder), real_seek);
|
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|
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break;
|
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}
|
|
case GST_EVENT_QOS:
|
|
{
|
|
gdouble proportion;
|
|
GstClockTimeDiff diff;
|
|
GstClockTime timestamp;
|
|
GstClockTime duration;
|
|
|
|
gst_event_parse_qos (event, &proportion, &diff, ×tamp);
|
|
|
|
GST_OBJECT_LOCK (base_video_decoder);
|
|
base_video_decoder->proportion = proportion;
|
|
if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (timestamp))) {
|
|
if (G_UNLIKELY (diff > 0)) {
|
|
if (base_video_decoder->state.fps_n > 0)
|
|
duration =
|
|
gst_util_uint64_scale (GST_SECOND,
|
|
base_video_decoder->state.fps_d,
|
|
base_video_decoder->state.fps_n);
|
|
else
|
|
duration = 0;
|
|
base_video_decoder->earliest_time = timestamp + 2 * diff + duration;
|
|
} else {
|
|
base_video_decoder->earliest_time = timestamp + diff;
|
|
}
|
|
} else {
|
|
base_video_decoder->earliest_time = GST_CLOCK_TIME_NONE;
|
|
}
|
|
GST_OBJECT_UNLOCK (base_video_decoder);
|
|
|
|
GST_DEBUG_OBJECT (base_video_decoder,
|
|
"got QoS %" GST_TIME_FORMAT ", %" G_GINT64_FORMAT ", %g",
|
|
GST_TIME_ARGS (timestamp), diff, proportion);
|
|
|
|
res =
|
|
gst_pad_push_event (GST_BASE_VIDEO_DECODER_SINK_PAD
|
|
(base_video_decoder), event);
|
|
break;
|
|
}
|
|
default:
|
|
res =
|
|
gst_pad_push_event (GST_BASE_VIDEO_DECODER_SINK_PAD
|
|
(base_video_decoder), event);
|
|
break;
|
|
}
|
|
done:
|
|
gst_object_unref (base_video_decoder);
|
|
return res;
|
|
|
|
convert_error:
|
|
GST_DEBUG_OBJECT (base_video_decoder, "could not convert format");
|
|
goto done;
|
|
}
|
|
|
|
static const GstQueryType *
|
|
gst_base_video_decoder_get_query_types (GstPad * pad)
|
|
{
|
|
static const GstQueryType query_types[] = {
|
|
GST_QUERY_POSITION,
|
|
GST_QUERY_DURATION,
|
|
GST_QUERY_CONVERT,
|
|
0
|
|
};
|
|
|
|
return query_types;
|
|
}
|
|
|
|
static gboolean
|
|
gst_base_video_decoder_src_query (GstPad * pad, GstQuery * query)
|
|
{
|
|
GstBaseVideoDecoder *dec;
|
|
gboolean res = TRUE;
|
|
|
|
dec = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
|
|
|
|
switch GST_QUERY_TYPE
|
|
(query) {
|
|
case GST_QUERY_POSITION:
|
|
{
|
|
GstFormat format;
|
|
gint64 time;
|
|
|
|
gst_query_parse_position (query, &format, NULL);
|
|
GST_DEBUG ("query in format %d", format);
|
|
|
|
if (format != GST_FORMAT_TIME) {
|
|
goto error;
|
|
}
|
|
|
|
time = dec->last_timestamp;
|
|
time = gst_segment_to_stream_time (&dec->segment, GST_FORMAT_TIME, time);
|
|
|
|
gst_query_set_position (query, format, time);
|
|
|
|
res = TRUE;
|
|
|
|
break;
|
|
}
|
|
case GST_QUERY_DURATION:
|
|
{
|
|
res = gst_pad_peer_query (dec->sinkpad, query);
|
|
break;
|
|
}
|
|
case GST_QUERY_CONVERT:
|
|
{
|
|
GstFormat src_fmt, dest_fmt;
|
|
gint64 src_val, dest_val;
|
|
|
|
GST_DEBUG ("convert query");
|
|
|
|
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
|
|
res =
|
|
gst_base_video_decoder_src_convert (pad, src_fmt, src_val, &dest_fmt,
|
|
&dest_val);
|
|
if (!res)
|
|
goto error;
|
|
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
|
|
break;
|
|
}
|
|
default:
|
|
res = gst_pad_query_default (pad, query);
|
|
}
|
|
gst_object_unref (dec);
|
|
return res;
|
|
|
|
error:
|
|
GST_ERROR_OBJECT (dec, "query failed");
|
|
gst_object_unref (dec);
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_base_video_decoder_sink_query (GstPad * pad, GstQuery * query)
|
|
{
|
|
GstBaseVideoDecoder *base_video_decoder;
|
|
gboolean res = FALSE;
|
|
|
|
base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
|
|
|
|
GST_DEBUG_OBJECT (base_video_decoder, "sink query fps=%d/%d",
|
|
base_video_decoder->state.fps_n, base_video_decoder->state.fps_d);
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
|
|
default:
|
|
res = gst_pad_query_default (pad, query);
|
|
break;
|
|
}
|
|
|
|
gst_object_unref (base_video_decoder);
|
|
|
|
return res;
|
|
}
|
|
|
|
void
|
|
gst_base_video_decoder_set_src_caps (GstBaseVideoDecoder * base_video_decoder)
|
|
{
|
|
GstCaps *caps;
|
|
GstVideoState *state = &base_video_decoder->state;
|
|
|
|
if (base_video_decoder->have_src_caps)
|
|
return;
|
|
|
|
caps = gst_pad_get_allowed_caps (base_video_decoder->srcpad);
|
|
if (!caps)
|
|
goto null_caps;
|
|
if (gst_caps_is_empty (caps))
|
|
goto empty_caps;
|
|
|
|
gst_caps_set_simple (caps,
|
|
"width", G_TYPE_INT, state->width,
|
|
"height", G_TYPE_INT, state->height,
|
|
"framerate", GST_TYPE_FRACTION, state->fps_n, state->fps_d,
|
|
"pixel-aspect-ratio", GST_TYPE_FRACTION, state->par_n, state->par_d,
|
|
"interlaced", G_TYPE_BOOLEAN, state->interlaced, NULL);
|
|
gst_pad_fixate_caps (base_video_decoder->srcpad, caps);
|
|
|
|
|
|
GST_DEBUG ("setting caps %" GST_PTR_FORMAT, caps);
|
|
|
|
gst_pad_set_caps (GST_BASE_VIDEO_DECODER_SRC_PAD (base_video_decoder), caps);
|
|
|
|
base_video_decoder->have_src_caps = TRUE;
|
|
|
|
gst_caps_unref (caps);
|
|
return;
|
|
|
|
null_caps:
|
|
GST_WARNING ("Got null caps from get_allowed_caps");
|
|
return;
|
|
|
|
empty_caps:
|
|
GST_WARNING ("Got empty caps from get_allowed_caps");
|
|
gst_caps_unref (caps);
|
|
return;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_base_video_decoder_drain (GstBaseVideoDecoder * dec, gboolean at_eos)
|
|
{
|
|
GstBaseVideoDecoderClass *klass;
|
|
GstBaseVideoDecoderScanResult res;
|
|
guint size;
|
|
|
|
klass = GST_BASE_VIDEO_DECODER_GET_CLASS (dec);
|
|
|
|
if (gst_adapter_available (dec->input_adapter) == 0)
|
|
return GST_FLOW_OK;
|
|
|
|
lost_sync:
|
|
if (!dec->have_sync) {
|
|
gint n, m;
|
|
|
|
GST_DEBUG ("no sync, scanning");
|
|
|
|
n = gst_adapter_available (dec->input_adapter);
|
|
m = klass->scan_for_sync (dec, dec->input_adapter);
|
|
if (m == -1) {
|
|
gst_object_unref (dec);
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
if (m < 0) {
|
|
g_warning ("subclass returned negative scan %d", m);
|
|
}
|
|
|
|
if (m >= n) {
|
|
GST_ERROR ("subclass scanned past end %d >= %d", m, n);
|
|
}
|
|
|
|
gst_adapter_flush (dec->input_adapter, m);
|
|
|
|
if (m < n) {
|
|
GST_DEBUG ("found possible sync after %d bytes (of %d)", m, n);
|
|
/* this is only "maybe" sync */
|
|
dec->have_sync = TRUE;
|
|
}
|
|
|
|
if (!dec->have_sync) {
|
|
return GST_FLOW_OK;
|
|
}
|
|
}
|
|
|
|
res = klass->scan_for_packet_end (dec, dec->input_adapter, &size, at_eos);
|
|
while (res == GST_BASE_VIDEO_DECODER_SCAN_RESULT_OK) {
|
|
GstBuffer *buf;
|
|
GstFlowReturn ret;
|
|
|
|
GST_DEBUG ("Packet size: %u", size);
|
|
if (size > gst_adapter_available (dec->input_adapter))
|
|
return GST_FLOW_OK;
|
|
|
|
buf = gst_adapter_take_buffer (dec->input_adapter, size);
|
|
GST_BUFFER_OFFSET (buf) = dec->input_offset -
|
|
gst_adapter_available (dec->input_adapter);
|
|
|
|
ret = klass->parse_data (dec, buf, at_eos);
|
|
if (ret != GST_FLOW_OK)
|
|
return ret;
|
|
|
|
res = klass->scan_for_packet_end (dec, dec->input_adapter, &size, at_eos);
|
|
}
|
|
|
|
switch (res) {
|
|
case GST_BASE_VIDEO_DECODER_SCAN_RESULT_LOST_SYNC:
|
|
dec->have_sync = FALSE;
|
|
goto lost_sync;
|
|
|
|
case GST_BASE_VIDEO_DECODER_SCAN_RESULT_NEED_DATA:
|
|
return GST_FLOW_OK;
|
|
|
|
default:
|
|
GST_ERROR_OBJECT (dec, "Subclass returned invalid scan result");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_base_video_decoder_chain (GstPad * pad, GstBuffer * buf)
|
|
{
|
|
GstBaseVideoDecoder *base_video_decoder;
|
|
GstBaseVideoDecoderClass *base_video_decoder_class;
|
|
GstFlowReturn ret;
|
|
|
|
GST_DEBUG ("chain %" GST_TIME_FORMAT " duration %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
|
|
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
|
|
|
|
#if 0
|
|
/* requiring the pad to be negotiated makes it impossible to use
|
|
* oggdemux or filesrc ! decoder */
|
|
if (!gst_pad_is_negotiated (pad)) {
|
|
GST_DEBUG ("not negotiated");
|
|
return GST_FLOW_NOT_NEGOTIATED;
|
|
}
|
|
#endif
|
|
|
|
base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
|
|
base_video_decoder_class =
|
|
GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
|
|
|
|
GST_DEBUG_OBJECT (base_video_decoder, "chain");
|
|
|
|
if (!base_video_decoder->have_segment) {
|
|
GstEvent *event;
|
|
GstFlowReturn ret;
|
|
|
|
GST_WARNING
|
|
("Received buffer without a new-segment. Assuming timestamps start from 0.");
|
|
|
|
gst_segment_set_newsegment_full (&base_video_decoder->segment,
|
|
FALSE, 1.0, 1.0, GST_FORMAT_TIME, 0, GST_CLOCK_TIME_NONE, 0);
|
|
base_video_decoder->have_segment = TRUE;
|
|
|
|
event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0,
|
|
GST_CLOCK_TIME_NONE, 0);
|
|
|
|
ret =
|
|
gst_pad_push_event (GST_BASE_VIDEO_DECODER_SRC_PAD (base_video_decoder),
|
|
event);
|
|
if (!ret) {
|
|
GST_ERROR ("new segment event ret=%d", ret);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT))) {
|
|
GST_DEBUG_OBJECT (base_video_decoder, "received DISCONT buffer");
|
|
gst_base_video_decoder_flush (base_video_decoder);
|
|
}
|
|
|
|
if (base_video_decoder->current_frame == NULL) {
|
|
base_video_decoder->current_frame =
|
|
gst_base_video_decoder_new_frame (base_video_decoder);
|
|
}
|
|
|
|
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
|
|
gst_base_video_decoder_add_timestamp (base_video_decoder, buf);
|
|
}
|
|
base_video_decoder->input_offset += GST_BUFFER_SIZE (buf);
|
|
|
|
|
|
if (base_video_decoder->packetized) {
|
|
base_video_decoder->current_frame->sink_buffer = buf;
|
|
|
|
ret = gst_base_video_decoder_have_frame (base_video_decoder, NULL);
|
|
} else {
|
|
|
|
gst_adapter_push (base_video_decoder->input_adapter, buf);
|
|
|
|
ret = gst_base_video_decoder_drain (base_video_decoder, FALSE);
|
|
}
|
|
|
|
gst_object_unref (base_video_decoder);
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_base_video_decoder_stop (GstBaseVideoDecoder * base_video_decoder)
|
|
{
|
|
GstBaseVideoDecoderClass *base_video_decoder_class;
|
|
|
|
GST_DEBUG ("stop");
|
|
|
|
base_video_decoder_class =
|
|
GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
|
|
|
|
if (base_video_decoder_class->stop)
|
|
return base_video_decoder_class->stop (base_video_decoder);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_base_video_decoder_start (GstBaseVideoDecoder * base_video_decoder)
|
|
{
|
|
GstBaseVideoDecoderClass *base_video_decoder_class;
|
|
|
|
GST_DEBUG ("start");
|
|
|
|
base_video_decoder_class =
|
|
GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
|
|
|
|
gst_base_video_decoder_reset (base_video_decoder);
|
|
|
|
if (base_video_decoder_class->start)
|
|
return base_video_decoder_class->start (base_video_decoder);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_base_video_decoder_change_state (GstElement * element,
|
|
GstStateChange transition)
|
|
{
|
|
GstBaseVideoDecoder *base_video_decoder;
|
|
GstStateChangeReturn ret;
|
|
|
|
base_video_decoder = GST_BASE_VIDEO_DECODER (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
gst_base_video_decoder_start (base_video_decoder);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_base_video_decoder_stop (base_video_decoder);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
GstFlowReturn
|
|
gst_base_video_decoder_finish_frame (GstBaseVideoDecoder * base_video_decoder,
|
|
GstVideoFrame * frame)
|
|
{
|
|
GstBaseVideoDecoderClass *base_video_decoder_class;
|
|
GstBuffer *src_buffer;
|
|
|
|
GST_DEBUG ("finish frame");
|
|
|
|
base_video_decoder_class =
|
|
GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
|
|
|
|
GST_DEBUG ("finish frame sync=%d pts=%" GST_TIME_FORMAT,
|
|
GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_VIDEO_FRAME_FLAG_SYNC_POINT),
|
|
GST_TIME_ARGS (frame->presentation_timestamp));
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (frame->presentation_timestamp)) {
|
|
if (frame->presentation_timestamp != base_video_decoder->timestamp_offset) {
|
|
GST_DEBUG ("sync timestamp %" GST_TIME_FORMAT " diff %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (frame->presentation_timestamp),
|
|
GST_TIME_ARGS (frame->presentation_timestamp -
|
|
base_video_decoder->segment.start));
|
|
base_video_decoder->timestamp_offset = frame->presentation_timestamp;
|
|
base_video_decoder->field_index = 0;
|
|
} else {
|
|
/* This case is for one initial timestamp and no others, e.g.,
|
|
* filesrc ! decoder ! xvimagesink */
|
|
GST_WARNING ("sync timestamp didn't change, ignoring");
|
|
frame->presentation_timestamp = GST_CLOCK_TIME_NONE;
|
|
}
|
|
} else {
|
|
if (GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_VIDEO_FRAME_FLAG_SYNC_POINT)) {
|
|
GST_WARNING ("sync point doesn't have timestamp");
|
|
if (!GST_CLOCK_TIME_IS_VALID (base_video_decoder->timestamp_offset)) {
|
|
GST_WARNING
|
|
("No base timestamp. Assuming frames start at segment start");
|
|
base_video_decoder->timestamp_offset =
|
|
base_video_decoder->segment.start;
|
|
base_video_decoder->field_index = 0;
|
|
}
|
|
}
|
|
}
|
|
frame->field_index = base_video_decoder->field_index;
|
|
base_video_decoder->field_index += frame->n_fields;
|
|
|
|
if (frame->presentation_timestamp == GST_CLOCK_TIME_NONE) {
|
|
frame->presentation_timestamp =
|
|
gst_base_video_decoder_get_field_timestamp (base_video_decoder,
|
|
frame->field_index);
|
|
frame->presentation_duration = GST_CLOCK_TIME_NONE;
|
|
frame->decode_timestamp =
|
|
gst_base_video_decoder_get_timestamp (base_video_decoder,
|
|
frame->decode_frame_number);
|
|
}
|
|
if (frame->presentation_duration == GST_CLOCK_TIME_NONE) {
|
|
frame->presentation_duration =
|
|
gst_base_video_decoder_get_field_duration (base_video_decoder,
|
|
frame->n_fields);
|
|
}
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (base_video_decoder->last_timestamp)) {
|
|
if (frame->presentation_timestamp < base_video_decoder->last_timestamp) {
|
|
GST_WARNING ("decreasing timestamp (%" GST_TIME_FORMAT " < %"
|
|
GST_TIME_FORMAT ")", GST_TIME_ARGS (frame->presentation_timestamp),
|
|
GST_TIME_ARGS (base_video_decoder->last_timestamp));
|
|
}
|
|
}
|
|
base_video_decoder->last_timestamp = frame->presentation_timestamp;
|
|
|
|
src_buffer = frame->src_buffer;
|
|
|
|
GST_BUFFER_FLAG_UNSET (src_buffer, GST_BUFFER_FLAG_DELTA_UNIT);
|
|
if (base_video_decoder->state.interlaced) {
|
|
#ifndef GST_VIDEO_BUFFER_TFF
|
|
#define GST_VIDEO_BUFFER_TFF (GST_MINI_OBJECT_FLAG_LAST << 5)
|
|
#endif
|
|
#ifndef GST_VIDEO_BUFFER_RFF
|
|
#define GST_VIDEO_BUFFER_RFF (GST_MINI_OBJECT_FLAG_LAST << 6)
|
|
#endif
|
|
#ifndef GST_VIDEO_BUFFER_ONEFIELD
|
|
#define GST_VIDEO_BUFFER_ONEFIELD (GST_MINI_OBJECT_FLAG_LAST << 7)
|
|
#endif
|
|
|
|
if (GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_VIDEO_FRAME_FLAG_TFF)) {
|
|
GST_BUFFER_FLAG_SET (src_buffer, GST_VIDEO_BUFFER_TFF);
|
|
} else {
|
|
GST_BUFFER_FLAG_UNSET (src_buffer, GST_VIDEO_BUFFER_TFF);
|
|
}
|
|
GST_BUFFER_FLAG_UNSET (src_buffer, GST_VIDEO_BUFFER_RFF);
|
|
GST_BUFFER_FLAG_UNSET (src_buffer, GST_VIDEO_BUFFER_ONEFIELD);
|
|
if (frame->n_fields == 3) {
|
|
GST_BUFFER_FLAG_SET (src_buffer, GST_VIDEO_BUFFER_RFF);
|
|
} else if (frame->n_fields == 1) {
|
|
GST_BUFFER_FLAG_SET (src_buffer, GST_VIDEO_BUFFER_ONEFIELD);
|
|
}
|
|
}
|
|
if (base_video_decoder->discont) {
|
|
GST_BUFFER_FLAG_UNSET (src_buffer, GST_BUFFER_FLAG_DISCONT);
|
|
base_video_decoder->discont = FALSE;
|
|
}
|
|
|
|
GST_BUFFER_TIMESTAMP (src_buffer) = frame->presentation_timestamp;
|
|
GST_BUFFER_DURATION (src_buffer) = frame->presentation_duration;
|
|
GST_BUFFER_OFFSET (src_buffer) = GST_BUFFER_OFFSET_NONE;
|
|
GST_BUFFER_OFFSET_END (src_buffer) = GST_BUFFER_OFFSET_NONE;
|
|
|
|
GST_DEBUG ("pushing frame %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (frame->presentation_timestamp));
|
|
|
|
gst_base_video_decoder_set_src_caps (base_video_decoder);
|
|
|
|
if (base_video_decoder->sink_clipping) {
|
|
gint64 start = GST_BUFFER_TIMESTAMP (src_buffer);
|
|
gint64 stop = GST_BUFFER_TIMESTAMP (src_buffer) +
|
|
GST_BUFFER_DURATION (src_buffer);
|
|
|
|
if (gst_segment_clip (&base_video_decoder->segment, GST_FORMAT_TIME,
|
|
start, stop, &start, &stop)) {
|
|
GST_BUFFER_TIMESTAMP (src_buffer) = start;
|
|
GST_BUFFER_DURATION (src_buffer) = stop - start;
|
|
GST_DEBUG ("accepting buffer inside segment: %" GST_TIME_FORMAT
|
|
" %" GST_TIME_FORMAT
|
|
" seg %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT
|
|
" time %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (src_buffer)),
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (src_buffer) +
|
|
GST_BUFFER_DURATION (src_buffer)),
|
|
GST_TIME_ARGS (base_video_decoder->segment.start),
|
|
GST_TIME_ARGS (base_video_decoder->segment.stop),
|
|
GST_TIME_ARGS (base_video_decoder->segment.time));
|
|
} else {
|
|
GST_DEBUG ("dropping buffer outside segment: %" GST_TIME_FORMAT
|
|
" %" GST_TIME_FORMAT
|
|
" seg %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT
|
|
" time %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (src_buffer)),
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (src_buffer) +
|
|
GST_BUFFER_DURATION (src_buffer)),
|
|
GST_TIME_ARGS (base_video_decoder->segment.start),
|
|
GST_TIME_ARGS (base_video_decoder->segment.stop),
|
|
GST_TIME_ARGS (base_video_decoder->segment.time));
|
|
gst_video_frame_unref (frame);
|
|
return GST_FLOW_OK;
|
|
}
|
|
}
|
|
|
|
gst_buffer_ref (src_buffer);
|
|
gst_video_frame_unref (frame);
|
|
|
|
if (base_video_decoder_class->shape_output)
|
|
return base_video_decoder_class->shape_output (base_video_decoder,
|
|
src_buffer);
|
|
|
|
return gst_pad_push (GST_BASE_VIDEO_DECODER_SRC_PAD (base_video_decoder),
|
|
src_buffer);
|
|
}
|
|
|
|
void
|
|
gst_base_video_decoder_skip_frame (GstBaseVideoDecoder * base_video_decoder,
|
|
GstVideoFrame * frame)
|
|
{
|
|
GstBaseVideoDecoderClass *base_video_decoder_class;
|
|
|
|
GST_DEBUG ("skip frame");
|
|
|
|
base_video_decoder_class =
|
|
GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
|
|
|
|
GST_DEBUG ("skip frame sync=%d pts=%" GST_TIME_FORMAT,
|
|
GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_VIDEO_FRAME_FLAG_SYNC_POINT),
|
|
GST_TIME_ARGS (frame->presentation_timestamp));
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (frame->presentation_timestamp)) {
|
|
if (frame->presentation_timestamp != base_video_decoder->timestamp_offset) {
|
|
GST_DEBUG ("sync timestamp %" GST_TIME_FORMAT " diff %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (frame->presentation_timestamp),
|
|
GST_TIME_ARGS (frame->presentation_timestamp -
|
|
base_video_decoder->segment.start));
|
|
base_video_decoder->timestamp_offset = frame->presentation_timestamp;
|
|
base_video_decoder->field_index = 0;
|
|
} else {
|
|
/* This case is for one initial timestamp and no others, e.g.,
|
|
* filesrc ! decoder ! xvimagesink */
|
|
GST_WARNING ("sync timestamp didn't change, ignoring");
|
|
frame->presentation_timestamp = GST_CLOCK_TIME_NONE;
|
|
}
|
|
} else {
|
|
if (GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_VIDEO_FRAME_FLAG_SYNC_POINT)) {
|
|
GST_WARNING ("sync point doesn't have timestamp");
|
|
if (GST_CLOCK_TIME_IS_VALID (base_video_decoder->timestamp_offset)) {
|
|
GST_WARNING
|
|
("No base timestamp. Assuming frames start at segment start");
|
|
base_video_decoder->timestamp_offset =
|
|
base_video_decoder->segment.start;
|
|
base_video_decoder->field_index = 0;
|
|
}
|
|
}
|
|
}
|
|
frame->field_index = base_video_decoder->field_index;
|
|
base_video_decoder->field_index += frame->n_fields;
|
|
|
|
if (frame->presentation_timestamp == GST_CLOCK_TIME_NONE) {
|
|
frame->presentation_timestamp =
|
|
gst_base_video_decoder_get_field_timestamp (base_video_decoder,
|
|
frame->field_index);
|
|
frame->presentation_duration = GST_CLOCK_TIME_NONE;
|
|
frame->decode_timestamp =
|
|
gst_base_video_decoder_get_timestamp (base_video_decoder,
|
|
frame->decode_frame_number);
|
|
}
|
|
if (frame->presentation_duration == GST_CLOCK_TIME_NONE) {
|
|
frame->presentation_duration =
|
|
gst_base_video_decoder_get_field_duration (base_video_decoder,
|
|
frame->n_fields);
|
|
}
|
|
|
|
base_video_decoder->last_timestamp = frame->presentation_timestamp;
|
|
|
|
GST_DEBUG ("skipping frame %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (frame->presentation_timestamp));
|
|
|
|
gst_video_frame_unref (frame);
|
|
}
|
|
|
|
GstFlowReturn
|
|
gst_base_video_decoder_have_frame (GstBaseVideoDecoder * base_video_decoder,
|
|
GstVideoFrame ** new_frame)
|
|
{
|
|
GstVideoFrame *frame = base_video_decoder->current_frame;
|
|
GstBaseVideoDecoderClass *klass;
|
|
GstClockTime timestamp, duration;
|
|
GstClockTime running_time;
|
|
GstClockTimeDiff deadline;
|
|
GstFlowReturn ret;
|
|
|
|
klass = GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
|
|
|
|
gst_base_video_decoder_get_timestamp_at_offset (base_video_decoder,
|
|
base_video_decoder->frame_offset, ×tamp, &duration);
|
|
|
|
frame->presentation_duration = timestamp;
|
|
frame->presentation_duration = duration;
|
|
|
|
if (GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_VIDEO_FRAME_FLAG_SYNC_POINT))
|
|
base_video_decoder->distance_from_sync = 0;
|
|
|
|
frame->distance_from_sync = base_video_decoder->distance_from_sync;
|
|
base_video_decoder->distance_from_sync++;
|
|
|
|
GST_DEBUG ("pts %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (frame->presentation_timestamp));
|
|
GST_DEBUG ("dts %" GST_TIME_FORMAT, GST_TIME_ARGS (frame->decode_timestamp));
|
|
GST_DEBUG ("dist %d", frame->distance_from_sync);
|
|
|
|
running_time = gst_segment_to_running_time (&base_video_decoder->segment,
|
|
GST_FORMAT_TIME, frame->presentation_timestamp);
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (base_video_decoder->earliest_time))
|
|
deadline = GST_CLOCK_DIFF (base_video_decoder->earliest_time, running_time);
|
|
else
|
|
deadline = G_MAXINT64;
|
|
|
|
/* do something with frame */
|
|
ret = klass->handle_frame (base_video_decoder, frame, deadline);
|
|
if (!GST_FLOW_IS_SUCCESS (ret)) {
|
|
GST_DEBUG ("flow error!");
|
|
}
|
|
|
|
/* create new frame */
|
|
base_video_decoder->current_frame =
|
|
gst_base_video_decoder_new_frame (base_video_decoder);
|
|
|
|
if (new_frame)
|
|
*new_frame = base_video_decoder->current_frame;
|
|
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
gst_base_video_decoder_frame_start (GstBaseVideoDecoder * base_video_decoder,
|
|
GstBuffer * buf)
|
|
{
|
|
base_video_decoder->frame_offset = GST_BUFFER_OFFSET (buf);
|
|
}
|
|
|
|
GstVideoState
|
|
gst_base_video_decoder_get_state (GstBaseVideoDecoder * base_video_decoder)
|
|
{
|
|
return base_video_decoder->state;
|
|
}
|
|
|
|
void
|
|
gst_base_video_decoder_set_state (GstBaseVideoDecoder * base_video_decoder,
|
|
GstVideoState state)
|
|
{
|
|
base_video_decoder->state = state;
|
|
|
|
base_video_decoder->have_src_caps = FALSE;
|
|
gst_base_video_decoder_set_src_caps (base_video_decoder);
|
|
}
|
|
|
|
void
|
|
gst_base_video_decoder_lost_sync (GstBaseVideoDecoder * base_video_decoder)
|
|
{
|
|
g_return_if_fail (GST_IS_BASE_VIDEO_DECODER (base_video_decoder));
|
|
|
|
GST_DEBUG ("lost_sync");
|
|
|
|
if (gst_adapter_available (base_video_decoder->input_adapter) >= 1) {
|
|
gst_adapter_flush (base_video_decoder->input_adapter, 1);
|
|
}
|
|
|
|
base_video_decoder->have_sync = FALSE;
|
|
}
|
|
|
|
GstVideoFrame *
|
|
gst_base_video_decoder_get_current_frame (GstBaseVideoDecoder *
|
|
base_video_decoder)
|
|
{
|
|
return base_video_decoder->current_frame;
|
|
}
|
|
|
|
/* GObject vmethod implementations */
|
|
static void
|
|
gst_base_video_decoder_get_property (GObject * object, guint property_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstBaseVideoDecoder *base_video_decoder = GST_BASE_VIDEO_DECODER (object);
|
|
|
|
switch (property_id) {
|
|
case PROP_PACKETIZED:
|
|
g_value_set_boolean (value, base_video_decoder->packetized);
|
|
break;
|
|
case PROP_SINK_CLIPPING:
|
|
g_value_set_boolean (value, base_video_decoder->sink_clipping);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_base_video_decoder_set_property (GObject * object, guint property_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstBaseVideoDecoder *base_video_decoder = GST_BASE_VIDEO_DECODER (object);
|
|
|
|
switch (property_id) {
|
|
case PROP_PACKETIZED:
|
|
base_video_decoder->packetized = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_SINK_CLIPPING:
|
|
base_video_decoder->sink_clipping = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_base_video_decoder_finalize (GObject * object)
|
|
{
|
|
GstBaseVideoDecoder *base_video_decoder;
|
|
GstBaseVideoDecoderClass *base_video_decoder_class;
|
|
|
|
g_return_if_fail (GST_IS_BASE_VIDEO_DECODER (object));
|
|
base_video_decoder = GST_BASE_VIDEO_DECODER (object);
|
|
base_video_decoder_class = GST_BASE_VIDEO_DECODER_GET_CLASS (object);
|
|
|
|
gst_base_video_decoder_reset (base_video_decoder);
|
|
|
|
if (base_video_decoder->input_adapter) {
|
|
g_object_unref (base_video_decoder->input_adapter);
|
|
base_video_decoder->input_adapter = NULL;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (object, "finalize");
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_base_video_decoder_base_init (gpointer g_class)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (basevideodecoder_debug, "basevideodecoder", 0,
|
|
"Base Video Decoder");
|
|
}
|
|
|
|
static void
|
|
gst_base_video_decoder_class_init (GstBaseVideoDecoderClass * klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
GstElementClass *gstelement_class;
|
|
|
|
gobject_class = G_OBJECT_CLASS (klass);
|
|
gstelement_class = GST_ELEMENT_CLASS (klass);
|
|
|
|
gobject_class->finalize = gst_base_video_decoder_finalize;
|
|
gobject_class->get_property = gst_base_video_decoder_get_property;
|
|
gobject_class->set_property = gst_base_video_decoder_set_property;
|
|
|
|
g_object_class_install_property (gobject_class, PROP_PACKETIZED,
|
|
g_param_spec_boolean ("packetized", "Packetized",
|
|
"Whether the incoming data is already packetized into suitable "
|
|
"packets", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_PACKETIZED,
|
|
g_param_spec_boolean ("sink-clipping", "Sink Clipping",
|
|
"If enabled GstBaseVideoDecoder will clip outgoing frames", FALSE,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
gstelement_class->change_state = gst_base_video_decoder_change_state;
|
|
|
|
parent_class = g_type_class_peek_parent (klass);
|
|
}
|
|
|
|
static void
|
|
gst_base_video_decoder_init (GstBaseVideoDecoder * base_video_decoder,
|
|
GstBaseVideoDecoderClass * base_video_decoder_class)
|
|
{
|
|
GstPadTemplate *pad_template;
|
|
GstPad *pad;
|
|
|
|
GST_DEBUG ("gst_base_video_decoder_init");
|
|
|
|
pad_template =
|
|
gst_element_class_get_pad_template (GST_ELEMENT_CLASS
|
|
(base_video_decoder_class), "sink");
|
|
g_return_if_fail (pad_template != NULL);
|
|
|
|
base_video_decoder->sinkpad = pad =
|
|
gst_pad_new_from_template (pad_template, "sink");
|
|
gst_element_add_pad (GST_ELEMENT (base_video_decoder), pad);
|
|
|
|
gst_pad_set_chain_function (pad, gst_base_video_decoder_chain);
|
|
gst_pad_set_event_function (pad, gst_base_video_decoder_sink_event);
|
|
gst_pad_set_setcaps_function (pad, gst_base_video_decoder_sink_setcaps);
|
|
gst_pad_set_query_function (pad, gst_base_video_decoder_sink_query);
|
|
|
|
if (base_video_decoder_class->create_srcpad) {
|
|
base_video_decoder->srcpad = pad =
|
|
base_video_decoder_class->create_srcpad (base_video_decoder,
|
|
base_video_decoder_class);
|
|
} else {
|
|
pad_template =
|
|
gst_element_class_get_pad_template (GST_ELEMENT_CLASS
|
|
(base_video_decoder_class), "src");
|
|
g_return_if_fail (pad_template != NULL);
|
|
|
|
base_video_decoder->srcpad = pad =
|
|
gst_pad_new_from_template (pad_template, "src");
|
|
}
|
|
gst_element_add_pad (GST_ELEMENT (base_video_decoder), pad);
|
|
|
|
gst_pad_set_event_function (pad, gst_base_video_decoder_src_event);
|
|
gst_pad_set_query_type_function (pad, gst_base_video_decoder_get_query_types);
|
|
gst_pad_set_query_function (pad, gst_base_video_decoder_src_query);
|
|
gst_pad_use_fixed_caps (pad);
|
|
|
|
base_video_decoder->input_adapter = gst_adapter_new ();
|
|
|
|
gst_segment_init (&base_video_decoder->segment, GST_FORMAT_TIME);
|
|
|
|
base_video_decoder->current_frame =
|
|
gst_base_video_decoder_new_frame (base_video_decoder);
|
|
|
|
/* properties */
|
|
base_video_decoder->packetized = FALSE;
|
|
base_video_decoder->sink_clipping = TRUE;
|
|
}
|