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theoradec: Make the keyframe condition check clearer

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Make the keyframe checking if statement easier to
read, and add some debug when detecting a keyframe
This commit is contained in:
Jan Schmidt 2017-03-04 00:12:26 +11:00
parent 6ac79da6a2
commit 924c44f369
1 changed files with 4 additions and 2 deletions
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6
ext/theora/gsttheoradec.c
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@ -277,9 +277,11 @@ theora_dec_parse (GstVideoDecoder * decoder,
if (av > 0) {
data = gst_adapter_map (adapter, 1);
/* check for keyframe; must not be header packet */
if (!(data[0] & 0x80) && (data[0] & 0x40) == 0)
/* check for keyframe; must not be header packet (0x80 | 0x40) */
if (!(data[0] & 0xc0)) {
GST_VIDEO_CODEC_FRAME_SET_SYNC_POINT (frame);
GST_LOG_OBJECT (decoder, "Found keyframe");
}
gst_adapter_unmap (adapter);
}