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more fixes 

Originally committed as revision 2192 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-09-01 17:05:28 +00:00
parent bf5d0505c6
commit 67b04c1aef
1 changed files with 11 additions and 10 deletions
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21
libavcodec/mdec.c
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@ -65,7 +65,7 @@ static inline int mdec_decode_block_intra(MDECContext *a, DCTELEM *block, int n)
/* DC coef */
if(a->version==2){
block[0]= get_sbits(&a->gb, 10);
block[0]= 2*get_sbits(&a->gb, 10) + 1024;
}else{
component = (n <= 3 ? 0 : n - 4 + 1);
diff = decode_dc(&a->gb, component);
@ -89,7 +89,7 @@ static inline int mdec_decode_block_intra(MDECContext *a, DCTELEM *block, int n)
i += run;
j = scantable[i];
level= (level*qscale*quant_matrix[j])>>3;
level= (level-1)|1;
// level= (level-1)|1;
level = (level ^ SHOW_SBITS(re, &a->gb, 1)) - SHOW_SBITS(re, &a->gb, 1);
LAST_SKIP_BITS(re, &a->gb, 1);
} else {
@ -99,15 +99,15 @@ static inline int mdec_decode_block_intra(MDECContext *a, DCTELEM *block, int n)
level = SHOW_SBITS(re, &a->gb, 10); SKIP_BITS(re, &a->gb, 10);
i += run;
j = scantable[i];
/* if(level<0){
if(level<0){
level= -level;
level= (level*qscale*quant_matrix[j])>>4;
level= (level*qscale*quant_matrix[j])>>3;
level= (level-1)|1;
level= -level;
}else{*/
level= (level*qscale*quant_matrix[j])>>4;
/* level= (level-1)|1;
}*/
}else{
level= (level*qscale*quant_matrix[j])>>3;
level= (level-1)|1;
}
}
if (i > 63){
fprintf(stderr, "ac-tex damaged at %d %d\n", a->mb_x, a->mb_y);
@ -124,11 +124,12 @@ static inline int mdec_decode_block_intra(MDECContext *a, DCTELEM *block, int n)
static inline int decode_mb(MDECContext *a, DCTELEM block[6][64]){
int i;
const int block_index[6]= {5,6,0,1,2,3};
a->dsp.clear_blocks(block[0]);
for(i=5; i>=0; i--){
if( mdec_decode_block_intra(a, block[i], i) < 0)
for(i=0; i<6; i++){
if( mdec_decode_block_intra(a, block[ block_index[i] ], block_index[i]) < 0)
return -1;
}
return 0;