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vp3: Skip the loop filter when strength is 0 or when requested 

Originally committed as revision 23346 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
David Conrad 2010-05-27 04:39:12 +00:00
parent 3491a9b266
commit a4501a45db
1 changed files with 6 additions and 1 deletions
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7
libavcodec/vp3.c
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@ -136,6 +136,7 @@ typedef struct Vp3DecodeContext {
DSPContext dsp;
int flipped_image;
int last_slice_end;
int skip_loop_filter;
int qps[3];
int nqps;
@ -1494,7 +1495,8 @@ static void render_slice(Vp3DecodeContext *s, int slice)
}
// Filter up to the last row in the superblock row
apply_loop_filter(s, plane, 4*sb_y - !!sb_y, FFMIN(4*sb_y+3, fragment_height-1));
if (!s->skip_loop_filter)
apply_loop_filter(s, plane, 4*sb_y - !!sb_y, FFMIN(4*sb_y+3, fragment_height-1));
}
}
@ -1749,6 +1751,9 @@ static int vp3_decode_frame(AVCodecContext *avctx,
s->keyframe?"key":"", counter, s->qps[0]);
counter++;
s->skip_loop_filter = !s->filter_limit_values[s->qps[0]] ||
avctx->skip_loop_filter >= (s->keyframe ? AVDISCARD_ALL : AVDISCARD_NONKEY);
if (s->qps[0] != s->last_qps[0])
init_loop_filter(s);