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videodecoder: Add API for marking output frames as corrupted

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This can be used by subclasses to mark output frames as known to be
corrupted, for example if reference frames were missing. ffmpeg's
decoders can signal this.

In addition this flag is propagated downstream if the input frame had it
set.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/730>
This commit is contained in:
Sebastian Dröge 2020-07-01 18:09:22 +03:00 committed by GStreamer Merge Bot
parent 74889206eb
commit 06bcf95ebf
2 changed files with 24 additions and 1 deletions
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14
gst-libs/gst/video/gstvideodecoder.c
View file

@ -3171,6 +3171,14 @@ gst_video_decoder_finish_frame (GstVideoDecoder * decoder,
GST_BUFFER_FLAG_SET (output_buffer, GST_BUFFER_FLAG_DISCONT);
}
if (GST_VIDEO_CODEC_FRAME_FLAG_IS_SET (frame,
GST_VIDEO_CODEC_FRAME_FLAG_CORRUPTED)) {
GST_DEBUG_OBJECT (decoder,
"marking frame %" GST_TIME_FORMAT " as corrupted",
GST_TIME_ARGS (frame->pts));
GST_BUFFER_FLAG_SET (output_buffer, GST_BUFFER_FLAG_CORRUPTED);
}
if (decoder_class->transform_meta) {
if (G_LIKELY (frame->input_buffer)) {
CopyMetaData data;
@ -3487,6 +3495,12 @@ gst_video_decoder_have_frame (GstVideoDecoder * decoder)
GST_VIDEO_CODEC_FRAME_SET_SYNC_POINT (priv->current_frame);
}
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_CORRUPTED)) {
GST_LOG_OBJECT (decoder, "Marking as corrupted");
GST_VIDEO_CODEC_FRAME_FLAG_SET (priv->current_frame,
GST_VIDEO_CODEC_FRAME_FLAG_CORRUPTED);
}
/* In reverse playback, just capture and queue frames for later processing */
if (decoder->input_segment.rate < 0.0) {
priv->parse_gather =

11
gst-libs/gst/video/gstvideoutils.h
View file

@ -82,6 +82,7 @@ struct _GstVideoCodecState
* @GST_VIDEO_CODEC_FRAME_FLAG_SYNC_POINT: is the frame a synchronization point (keyframe)
* @GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME: should the output frame be made a keyframe
* @GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME_HEADERS: should the encoder output stream headers
* @GST_VIDEO_CODEC_FRAME_FLAG_CORRUPTED: the buffer data is corrupted (Since: 1.20)
*
* Flags for #GstVideoCodecFrame
*/
@ -90,7 +91,15 @@ typedef enum
GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY = (1<<0),
GST_VIDEO_CODEC_FRAME_FLAG_SYNC_POINT = (1<<1),
GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME = (1<<2),
GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME_HEADERS = (1<<3)
GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME_HEADERS = (1<<3),
/**
* GST_VIDEO_CODEC_FRAME_FLAG_CORRUPTED:
*
* The buffer data is corrupted.
*
* Since: 1.20
*/
GST_VIDEO_CODEC_FRAME_FLAG_CORRUPTED = (1<<4),
} GstVideoCodecFrameFlags;
/**