diff options
| author | Kostya Shishkov <kostya.shishkov@gmail.com> | 2006-07-22 03:54:00 +0000 |
|---|---|---|
| committer | Kostya Shishkov <kostya.shishkov@gmail.com> | 2006-07-22 03:54:00 +0000 |
| commit | 4b94465927660403d7b5715b34ac5c66e1b17b82 (patch) | |
| tree | 2d6058a71fca75ebf6a2f92eb36a8d53ad76931a /libavcodec | |
| parent | aab771591091fb3de912ccca9ed98d0a443293ab (diff) | |
Don't do non-uniform quantization on zero coeffs.
Originally committed as revision 5810 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/vc1.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c index fa1d9fa351..b6bcd7f104 100644 --- a/libavcodec/vc1.c +++ b/libavcodec/vc1.c @@ -2061,13 +2061,13 @@ not_coded: if(dc_pred_dir) { //left for(k = 1; k < 8; k++) { block[k << 3] = ac_val[k] * scale; - if(!v->pquantizer) + if(!v->pquantizer && block[k << 3]) block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq; } } else { //top for(k = 1; k < 8; k++) { block[k] = ac_val[k + 8] * scale; - if(!v->pquantizer) + if(!v->pquantizer && block[k]) block[k] += (block[k] < 0) ? -v->pq : v->pq; } } @@ -2260,13 +2260,13 @@ static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int c if(dc_pred_dir) { //left for(k = 1; k < 8; k++) { block[k << 3] = ac_val2[k] * scale; - if(!v->pquantizer) + if(!v->pquantizer && block[k << 3]) block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant; } } else { //top for(k = 1; k < 8; k++) { block[k] = ac_val2[k + 8] * scale; - if(!v->pquantizer) + if(!v->pquantizer && block[k]) block[k] += (block[k] < 0) ? -mquant : mquant; } } |