C++ (Cpp) gst_base_video_decoder_get_timestamp_at_offset Examples

Example #1

File: gstbasevideodecoder.c Project: spunktsch/svtplayer

GstFlowReturn
gst_base_video_decoder_have_frame (GstBaseVideoDecoder * base_video_decoder,
    gboolean include_current_buf, GstVideoFrame ** new_frame)
{
  GstVideoFrame *frame = base_video_decoder->current_frame;
  GstBaseVideoDecoderClass *klass;

  guint64 frame_end_offset;
  GstClockTime timestamp, duration;
  GstClockTime running_time;
  GstClockTimeDiff deadline;
  GstFlowReturn ret;

  klass = GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);

  if (include_current_buf)
    frame_end_offset = base_video_decoder->current_buf_offset;
  else
    frame_end_offset = base_video_decoder->prev_buf_offset;

  gst_base_video_decoder_get_timestamp_at_offset (base_video_decoder,
      frame_end_offset, &timestamp, &duration);

  frame->presentation_timestamp = 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;
}

Example #2

File: gstbasevideodecoder.c Project: prestocore/browser

GstFlowReturn
gst_base_video_decoder_have_frame (GstBaseVideoDecoder * base_video_decoder)
{
  GstBuffer *buffer;
  int n_available;
  GstClockTime timestamp;
  GstClockTime duration;

  GST_DEBUG ("have_frame");

  n_available = gst_adapter_available (base_video_decoder->output_adapter);
  if (n_available) {
    buffer = gst_adapter_take_buffer (base_video_decoder->output_adapter,
        n_available);
  } else {
    buffer = gst_buffer_new_and_alloc (0);
  }

  base_video_decoder->current_frame->sink_buffer = buffer;

  gst_base_video_decoder_get_timestamp_at_offset (base_video_decoder,
      base_video_decoder->frame_offset, &timestamp, &duration);

  GST_BUFFER_TIMESTAMP (buffer) = timestamp;
  GST_BUFFER_DURATION (buffer) = duration;

  return gst_base_video_decoder_have_frame_2 (base_video_decoder);
}