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mpeg4videoparse: do not lose DISCONT flag if buffer isn't pushed

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mpeg4videoparse might not push buffers while parsing. If those buffers
contain the DISCONT flag, it gets lost and downstream won't get any
buffer with the flag.

Fix it by adding the DISCONT to the next pushed buffer.
This makes backwards playback work.
This commit is contained in:
Thiago Santos 2014-01-08 16:33:05 -03:00
parent c894c2d721
commit 4e283dbb62
2 changed files with 12 additions and 0 deletions
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10
gst/videoparsers/gstmpeg4videoparse.c
View file

@ -211,6 +211,7 @@ gst_mpeg4vparse_reset (GstMpeg4VParse * mp4vparse)
mp4vparse->level = NULL;
mp4vparse->pending_key_unit_ts = GST_CLOCK_TIME_NONE;
mp4vparse->force_key_unit_event = NULL;
mp4vparse->discont = FALSE;
gst_buffer_replace (&mp4vparse->config, NULL);
memset (&mp4vparse->vol, 0, sizeof (mp4vparse->vol));
@ -414,6 +415,11 @@ gst_mpeg4vparse_handle_frame (GstBaseParse * parse,
gboolean ret = FALSE;
guint framesize = 0;
if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (frame->buffer,
GST_BUFFER_FLAG_DISCONT))) {
mp4vparse->discont = TRUE;
}
gst_buffer_map (frame->buffer, &map, GST_MAP_READ);
data = map.data;
size = map.size;
@ -528,6 +534,10 @@ out:
res = gst_mpeg4vparse_parse_frame (parse, frame);
if (res == GST_BASE_PARSE_FLOW_DROPPED)
frame->flags |= GST_BASE_PARSE_FRAME_FLAG_DROP;
if (G_UNLIKELY (mp4vparse->discont)) {
GST_BUFFER_FLAG_SET (frame->buffer, GST_BUFFER_FLAG_DISCONT);
mp4vparse->discont = FALSE;
}
return gst_base_parse_finish_frame (parse, frame, framesize);
}

2
gst/videoparsers/gstmpeg4videoparse.h
View file

@ -59,6 +59,8 @@ struct _GstMpeg4VParse {
GstMpeg4VisualObject vo;
gint vo_offset;
gboolean discont;
GstBuffer *config;
GstMpeg4VideoObjectLayer vol;
gboolean vol_offset;