38 |
|
|
39 |
#define LEVELOFFSET 32 |
#define LEVELOFFSET 32 |
40 |
|
|
41 |
|
/* Initialized once during xvid_global call |
42 |
|
* RO access is thread safe */ |
43 |
static REVERSE_EVENT DCT3D[2][4096]; |
static REVERSE_EVENT DCT3D[2][4096]; |
44 |
static VLC coeff_VLC[2][2][64][64]; |
static VLC coeff_VLC[2][2][64][64]; |
45 |
|
|
199 |
static __inline void |
static __inline void |
200 |
CodeVector(Bitstream * bs, |
CodeVector(Bitstream * bs, |
201 |
int32_t value, |
int32_t value, |
202 |
int32_t f_code, |
int32_t f_code) |
|
Statistics * pStat) |
|
203 |
{ |
{ |
204 |
|
|
205 |
const int scale_factor = 1 << (f_code - 1); |
const int scale_factor = 1 << (f_code - 1); |
211 |
if (value > (cmp - 1)) |
if (value > (cmp - 1)) |
212 |
value -= 64 * scale_factor; |
value -= 64 * scale_factor; |
213 |
|
|
|
pStat->iMvSum += value * value; |
|
|
pStat->iMvCount++; |
|
|
|
|
214 |
if (value == 0) { |
if (value == 0) { |
215 |
BitstreamPutBits(bs, mb_motion_table[32].code, |
BitstreamPutBits(bs, mb_motion_table[32].code, |
216 |
mb_motion_table[32].len); |
mb_motion_table[32].len); |
451 |
return bits; |
return bits; |
452 |
} |
} |
453 |
|
|
454 |
static int iDQtab[5] = { |
static const int iDQtab[5] = { |
455 |
1, 0, -1 /* no change */, 2, 3 |
1, 0, -1 /* no change */, 2, 3 |
456 |
}; |
}; |
457 |
#define DQ_VALUE2INDEX(value) iDQtab[(value)+2] |
#define DQ_VALUE2INDEX(value) iDQtab[(value)+2] |
575 |
/* code motion vector(s) if motion is local */ |
/* code motion vector(s) if motion is local */ |
576 |
if (!pMB->mcsel) |
if (!pMB->mcsel) |
577 |
for (i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) { |
for (i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) { |
578 |
CodeVector(bs, pMB->pmvs[i].x, frame->fcode, pStat); |
CodeVector(bs, pMB->pmvs[i].x, frame->fcode); |
579 |
CodeVector(bs, pMB->pmvs[i].y, frame->fcode, pStat); |
CodeVector(bs, pMB->pmvs[i].y, frame->fcode); |
580 |
} |
} |
581 |
|
|
582 |
bits = BitstreamPos(bs); |
bits = BitstreamPos(bs); |
744 |
|
|
745 |
switch (mb->mode) { |
switch (mb->mode) { |
746 |
case MODE_INTERPOLATE: |
case MODE_INTERPOLATE: |
747 |
CodeVector(bs, mb->pmvs[1].x, vcode, pStat); /* forward vector of interpolate mode */ |
CodeVector(bs, mb->pmvs[1].x, vcode); /* forward vector of interpolate mode */ |
748 |
CodeVector(bs, mb->pmvs[1].y, vcode, pStat); |
CodeVector(bs, mb->pmvs[1].y, vcode); |
749 |
case MODE_BACKWARD: |
case MODE_BACKWARD: |
750 |
vcode = bcode; |
vcode = bcode; |
751 |
case MODE_FORWARD: |
case MODE_FORWARD: |
752 |
CodeVector(bs, mb->pmvs[0].x, vcode, pStat); |
CodeVector(bs, mb->pmvs[0].x, vcode); |
753 |
CodeVector(bs, mb->pmvs[0].y, vcode, pStat); |
CodeVector(bs, mb->pmvs[0].y, vcode); |
754 |
break; |
break; |
755 |
case MODE_DIRECT: |
case MODE_DIRECT: |
756 |
CodeVector(bs, mb->pmvs[3].x, 1, pStat); /* fcode is always 1 for delta vector */ |
CodeVector(bs, mb->pmvs[3].x, 1); /* fcode is always 1 for delta vector */ |
757 |
CodeVector(bs, mb->pmvs[3].y, 1, pStat); /* prediction is always (0,0) */ |
CodeVector(bs, mb->pmvs[3].y, 1); /* prediction is always (0,0) */ |
758 |
default: break; |
default: break; |
759 |
} |
} |
760 |
|
|