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Code Issues Releases Activity

fix and cleanup h261 mb_type selection

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Originally committed as revision 3647 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-10-28 17:21:34 +00:00
parent 13e5b1f684
commit 9740687b6b
3 changed files with 14 additions and 20 deletions
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26
libavcodec/h261.c
View File

@ -220,12 +220,11 @@ void ff_h261_encode_mb(MpegEncContext * s,
int motion_x, int motion_y)
{
H261Context * h = (H261Context *)s;
int old_mtype, mvd, mv_diff_x, mv_diff_y, i, cbp;
int mvd, mv_diff_x, mv_diff_y, i, cbp;
cbp = 63; // avoid warning
mvd = 0;
h->current_mba++;
old_mtype = h->mtype;
h->mtype = 0;
if (!s->mb_intra){
@ -233,14 +232,8 @@ void ff_h261_encode_mb(MpegEncContext * s,
cbp= get_cbp(s, block);
/* mvd indicates if this block is motion compensated */
if(((motion_x >> 1) - h->current_mv_x != 0) || ((motion_y >> 1 ) - h->current_mv_y) != 0){
mvd = 1;
}
else if((motion_x >> 1 == 0) && (motion_y >> 1 == 0)){
mvd = 0;
}
else
mvd = 1;
mvd = motion_x | motion_y;
if((cbp | mvd | s->dquant ) == 0) {
/* skip macroblock */
s->skip_count++;
@ -255,14 +248,15 @@ void ff_h261_encode_mb(MpegEncContext * s,
/* calculate MTYPE */
if(!s->mb_intra){
h->mtype+=2;
if(mvd == 1){
h->mtype+=2;
if(cbp!=0)
h->mtype+=1;
h->mtype++;
if(mvd || s->loop_filter)
h->mtype+=3;
if(s->loop_filter)
h->mtype+=3;
}
if(cbp || s->dquant)
h->mtype++;
assert(h->mtype > 1);
}
if(s->dquant)

4
tests/ffmpeg.regression.ref
View File

@ -35,8 +35,8 @@ a5bd577163968edab00058f2c8d5efab *./data/a-wmv2.avi
682132 ./data/a-wmv2.avi
09253222ab4eb95628c931a86006a2b1 *./data/out.yuv
stddev: 8.02 PSNR:30.04 bytes:7602176
394b91b7ef6b94e375316cc3037e68c5 *./data/a-h261.avi
779660 ./data/a-h261.avi
c12437d78325d6634ff77a49bf1869e8 *./data/a-h261.avi
779222 ./data/a-h261.avi
1dd0be7be463c1a338d1b848e926a0b8 *./data/out.yuv
stddev: 9.17 PSNR:28.87 bytes:7602176
fa556e599181bf9328a811a1ce9aa022 *./data/a-h263.avi

4
tests/rotozoom.regression.ref
View File

@ -35,8 +35,8 @@ stddev: 5.33 PSNR:33.58 bytes:7602176
129214 ./data/a-wmv2.avi
f80d2809e79af3ebcfe831deab9af03c *./data/out.yuv
stddev: 5.33 PSNR:33.58 bytes:7602176
39726b83734fa58d33d99098511cdb98 *./data/a-h261.avi
194348 ./data/a-h261.avi
41050f885f7ea9594643e5dbf8ea30da *./data/a-h261.avi
193452 ./data/a-h261.avi
c74fbf0b0faf1124e172413c059ab45a *./data/out.yuv
stddev: 6.40 PSNR:31.99 bytes:7602176
ef053b1fec77a49eb8a27510b81e4041 *./data/a-h263.avi