static void
gst_base_video_decoder_calculate_timestamps (GstBaseVideoDecoder *
base_video_decoder, GstVideoFrame * frame,
GstClockTime * presentation_timestamp, GstClockTime * presentation_duration)
{
GST_DEBUG ("calculate timestamps sync=%d upstream timestamp: %"
GST_TIME_FORMAT " parsed timestamp: %" GST_TIME_FORMAT,
GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_VIDEO_FRAME_FLAG_SYNC_POINT),
GST_TIME_ARGS (frame->upstream_timestamp),
GST_TIME_ARGS (frame->parsed_timestamp));
*presentation_timestamp = GST_CLOCK_TIME_NONE;
*presentation_duration = GST_CLOCK_TIME_NONE;
if (gst_base_video_decoder_check_timestamp (base_video_decoder,
frame->upstream_timestamp)) {
*presentation_timestamp = frame->upstream_timestamp;
*presentation_duration = frame->upstream_duration;
}
else if (gst_base_video_decoder_check_timestamp (base_video_decoder,
frame->parsed_timestamp))
*presentation_timestamp = frame->parsed_timestamp;
if (GST_CLOCK_TIME_IS_VALID (*presentation_timestamp)) {
GST_DEBUG ("sync timestamp %" GST_TIME_FORMAT " diff %" GST_TIME_FORMAT,
GST_TIME_ARGS (*presentation_timestamp),
GST_TIME_ARGS (*presentation_timestamp -
base_video_decoder->segment.start));
base_video_decoder->timestamp_offset = *presentation_timestamp;
base_video_decoder->field_index = 0;
}
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;
}
}
*presentation_timestamp =
gst_base_video_decoder_get_field_timestamp (base_video_decoder,
base_video_decoder->field_index);
}
if (*presentation_duration == GST_CLOCK_TIME_NONE) {
*presentation_duration =
gst_base_video_decoder_get_field_duration (base_video_decoder,
frame->n_fields);
}
base_video_decoder->field_index += frame->n_fields;
base_video_decoder->last_timestamp = *presentation_timestamp;
}
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);
}
