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videodecoder: Handle instant-rate-change event

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When receiving an instant-rate-change event, store the updated
seek flags and replace the flags in any input segments with them
to allow for instant switching between trickmodes and not.
This commit is contained in:
Jan Schmidt 2018-11-30 22:56:11 +11:00 committed by Sebastian Dröge
parent f9c5db7d56
commit 8cb14728a7
1 changed files with 35 additions and 0 deletions
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35
gst-libs/gst/video/gstvideodecoder.c
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@ -327,6 +327,10 @@ struct _GstVideoDecoderPrivate
/* input_segment are output_segment identical */
gboolean in_out_segment_sync;
/* TRUE if we have an active set of instant rate flags */
gboolean decode_flags_override;
GstSegmentFlags decode_flags;
/* ... being tracked here;
* only available during parsing */
GstVideoCodecFrame *current_frame;
@ -1328,13 +1332,43 @@ gst_video_decoder_sink_event_default (GstVideoDecoder * decoder,
GST_VIDEO_DECODER_STREAM_LOCK (decoder);
/* Update the decode flags in the segment if we have an instant-rate
* override active */
GST_OBJECT_LOCK (decoder);
if (!priv->decode_flags_override)
priv->decode_flags = segment.flags;
else {
segment.flags &= ~GST_SEGMENT_INSTANT_FLAGS;
segment.flags |= priv->decode_flags & GST_SEGMENT_INSTANT_FLAGS;
}
priv->base_timestamp = GST_CLOCK_TIME_NONE;
priv->base_picture_number = 0;
decoder->input_segment = segment;
decoder->priv->in_out_segment_sync = FALSE;
GST_OBJECT_UNLOCK (decoder);
GST_VIDEO_DECODER_STREAM_UNLOCK (decoder);
break;
}
case GST_EVENT_INSTANT_RATE_CHANGE:
{
GstSegmentFlags flags;
GstSegment *seg;
gst_event_parse_instant_rate_change (event, NULL, &flags);
GST_OBJECT_LOCK (decoder);
priv->decode_flags_override = TRUE;
priv->decode_flags = flags;
/* Update the input segment flags */
seg = &decoder->input_segment;
seg->flags &= ~GST_SEGMENT_INSTANT_FLAGS;
seg->flags |= priv->decode_flags & GST_SEGMENT_INSTANT_FLAGS;
GST_OBJECT_UNLOCK (decoder);
break;
}
case GST_EVENT_FLUSH_STOP:
@ -2072,6 +2106,7 @@ gst_video_decoder_reset (GstVideoDecoder * decoder, gboolean full,
GST_OBJECT_LOCK (decoder);
priv->earliest_time = GST_CLOCK_TIME_NONE;
priv->proportion = 0.5;
priv->decode_flags_override = FALSE;
GST_OBJECT_UNLOCK (decoder);
}