606 |
if (frame->coding_type != I_VOP) |
if (frame->coding_type != I_VOP) |
607 |
BitstreamPutBit(bs, 0); /* not_coded */ |
BitstreamPutBit(bs, 0); /* not_coded */ |
608 |
|
|
609 |
|
if (frame->vop_flags & XVID_VOP_GREYSCALE) { |
610 |
|
pMB->cbp &= 0x3C; /* keep only bits 5-2 */ |
611 |
|
qcoeff[4*64+0]=0; /* for INTRA DC value is saved */ |
612 |
|
qcoeff[5*64+0]=0; |
613 |
|
} |
614 |
|
|
615 |
if (pMB->mode == MODE_INTRA || pMB->mode == MODE_INTRA_Q) |
if (pMB->mode == MODE_INTRA || pMB->mode == MODE_INTRA_Q) |
616 |
CodeBlockIntra(frame, pMB, qcoeff, bs, pStat); |
CodeBlockIntra(frame, pMB, qcoeff, bs, pStat); |
617 |
else |
else |
698 |
scan_tables[2] : scan_tables[0]; |
scan_tables[2] : scan_tables[0]; |
699 |
int bits; |
int bits; |
700 |
|
|
|
|
|
701 |
/* ------------------------------------------------------------------ |
/* ------------------------------------------------------------------ |
702 |
when a block is skipped it is decoded DIRECT(0,0) |
when a block is skipped it is decoded DIRECT(0,0) |
703 |
hence is interpolated from forward & backward frames |
hence is interpolated from forward & backward frames |
1072 |
break; |
break; |
1073 |
} |
} |
1074 |
coeff += run; |
coeff += run; |
1075 |
|
|
1076 |
|
#ifdef _DEBUG |
1077 |
|
if(coeff>=64) { |
1078 |
|
DPRINTF(XVID_DEBUG_ERROR,"error: overflow in coefficient index\n"); |
1079 |
|
return; |
1080 |
|
} |
1081 |
|
#endif |
1082 |
|
|
1083 |
block[scan[coeff]] = level; |
block[scan[coeff]] = level; |
1084 |
|
|
1085 |
DPRINTF(XVID_DEBUG_COEFF,"block[%i] %i\n", scan[coeff], level); |
DPRINTF(XVID_DEBUG_COEFF,"block[%i] %i\n", scan[coeff], level); |
1121 |
} |
} |
1122 |
p += run; |
p += run; |
1123 |
|
|
1124 |
|
#ifdef _DEBUG |
1125 |
|
if(p>=64) { |
1126 |
|
DPRINTF(XVID_DEBUG_ERROR,"error: overflow in coefficient index\n"); |
1127 |
|
return; |
1128 |
|
} |
1129 |
|
#endif |
1130 |
|
|
1131 |
if (level < 0) { |
if (level < 0) { |
1132 |
level = level*quant_m_2 - quant_add; |
level = level*quant_m_2 - quant_add; |
1133 |
block[scan[p]] = (level >= -2048 ? level : -2048); |
block[scan[p]] = (level >= -2048 ? level : -2048); |
1163 |
} |
} |
1164 |
p += run; |
p += run; |
1165 |
|
|
1166 |
|
#ifdef _DEBUG |
1167 |
|
if(p>=64) { |
1168 |
|
DPRINTF(XVID_DEBUG_ERROR,"error: overflow in coefficient index\n"); |
1169 |
|
return; |
1170 |
|
} |
1171 |
|
#endif |
1172 |
|
|
1173 |
if (level < 0) { |
if (level < 0) { |
1174 |
level = ((2 * -level + 1) * matrix[scan[p]] * quant) >> 4; |
level = ((2 * -level + 1) * matrix[scan[p]] * quant) >> 4; |
1175 |
block[scan[p]] = (level <= 2048 ? -level : -2048); |
block[scan[p]] = (level <= 2048 ? -level : -2048); |
1966 |
}; |
}; |
1967 |
|
|
1968 |
short const dc_threshold[] = { |
short const dc_threshold[] = { |
1969 |
21514, 26984, 8307, 28531, 29798, 24951, 25970, 26912, |
26708, 29545, 29472, 26223, 30580, 29281, 8293, 29545, |
1970 |
8307, 25956, 26994, 25974, 8292, 29286, 28015, 29728, |
25632, 29285, 30313, 25701, 26144, 28530, 8301, 26740, |
1971 |
25960, 18208, 21838, 18208, 19536, 22560, 26998, 8260, |
8293, 20039, 8277, 20551, 8268, 30296, 17513, 25376, |
1972 |
28515, 25956, 8291, 25640, 30309, 27749, 11817, 22794, |
25711, 25445, 10272, 11825, 11825, 10544, 2606, 28505, |
1973 |
30063, 8306, 28531, 29798, 24951, 25970, 25632, 29545, |
29301, 29472, 26223, 30580, 29281, 8293, 26980, 29811, |
1974 |
29300, 25193, 29813, 29295, 26656, 29537, 29728, 8303, |
26994, 30050, 28532, 8306, 24936, 8307, 28532, 26400, |
1975 |
26983, 25974, 24864, 25443, 29541, 8307, 28532, 26912, |
30313, 8293, 25441, 25955, 29555, 29728, 8303, 29801, |
1976 |
29556, 29472, 30063, 25458, 8293, 28515, 25956, 2606 |
8307, 28531, 29301, 25955, 25376, 25711, 11877, 10 |
1977 |
}; |
}; |
1978 |
|
|
1979 |
VLC const dc_lum_tab[] = { |
VLC const dc_lum_tab[] = { |