32 |
* |
* |
33 |
* History: |
* History: |
34 |
* |
* |
35 |
|
* 28.06.2002 added basic resync support to iframe/pframe_decode() |
36 |
* 22.06.2002 added primative N_VOP support |
* 22.06.2002 added primative N_VOP support |
37 |
* #define BFRAMES_DEC now enables Minchenm's bframe decoder |
* #define BFRAMES_DEC now enables Minchenm's bframe decoder |
38 |
* 08.05.2002 add low_delay support for B_VOP decode |
* 08.05.2002 add low_delay support for B_VOP decode |
50 |
* 22.12.2001 lock based interpolation |
* 22.12.2001 lock based interpolation |
51 |
* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
52 |
* |
* |
53 |
* $Id: decoder.c,v 1.21 2002-06-22 07:23:09 suxen_drol Exp $ |
* $Id: decoder.c,v 1.23 2002-06-30 10:46:29 suxen_drol Exp $ |
54 |
* |
* |
55 |
*************************************************************************/ |
*************************************************************************/ |
56 |
|
|
204 |
const uint32_t cbp, |
const uint32_t cbp, |
205 |
Bitstream * bs, |
Bitstream * bs, |
206 |
const uint32_t quant, |
const uint32_t quant, |
207 |
const uint32_t intra_dc_threshold) |
const uint32_t intra_dc_threshold, |
208 |
|
const unsigned int bound) |
209 |
{ |
{ |
210 |
|
|
211 |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
231 |
|
|
232 |
start_timer(); |
start_timer(); |
233 |
predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64], |
predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64], |
234 |
iQuant, iDcScaler, predictors); |
iQuant, iDcScaler, predictors, bound); |
235 |
if (!acpred_flag) { |
if (!acpred_flag) { |
236 |
pMB->acpred_directions[i] = 0; |
pMB->acpred_directions[i] = 0; |
237 |
} |
} |
250 |
|
|
251 |
block[i * 64 + 0] = dc_dif; |
block[i * 64 + 0] = dc_dif; |
252 |
start_coeff = 1; |
start_coeff = 1; |
253 |
|
|
254 |
|
DPRINTF(DPRINTF_COEFF,"block[0] %i", dc_dif); |
255 |
} else { |
} else { |
256 |
start_coeff = 0; |
start_coeff = 0; |
257 |
} |
} |
426 |
int quant, |
int quant, |
427 |
int intra_dc_threshold) |
int intra_dc_threshold) |
428 |
{ |
{ |
429 |
|
uint32_t bound; |
430 |
uint32_t x, y; |
uint32_t x, y; |
431 |
|
|
432 |
|
bound = 0; |
433 |
|
|
434 |
for (y = 0; y < dec->mb_height; y++) { |
for (y = 0; y < dec->mb_height; y++) { |
435 |
for (x = 0; x < dec->mb_width; x++) { |
for (x = 0; x < dec->mb_width; x++) { |
436 |
MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
MACROBLOCK *mb; |
|
|
|
437 |
uint32_t mcbpc; |
uint32_t mcbpc; |
438 |
uint32_t cbpc; |
uint32_t cbpc; |
439 |
uint32_t acpred_flag; |
uint32_t acpred_flag; |
440 |
uint32_t cbpy; |
uint32_t cbpy; |
441 |
uint32_t cbp; |
uint32_t cbp; |
442 |
|
|
443 |
|
while (BitstreamShowBits(bs, 9) == 1) |
444 |
|
BitstreamSkip(bs, 9); |
445 |
|
|
446 |
|
if (check_resync_marker(bs, 0)) |
447 |
|
{ |
448 |
|
bound = read_video_packet_header(bs, 0, &quant); |
449 |
|
x = bound % dec->mb_width; |
450 |
|
y = bound / dec->mb_width; |
451 |
|
} |
452 |
|
mb = &dec->mbs[y * dec->mb_width + x]; |
453 |
|
|
454 |
|
DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); |
455 |
|
|
456 |
mcbpc = get_mcbpc_intra(bs); |
mcbpc = get_mcbpc_intra(bs); |
457 |
mb->mode = mcbpc & 7; |
mb->mode = mcbpc & 7; |
458 |
cbpc = (mcbpc >> 4); |
cbpc = (mcbpc >> 4); |
459 |
|
|
460 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
461 |
|
|
|
if (mb->mode == MODE_STUFFING) { |
|
|
DEBUG("-- STUFFING ?"); |
|
|
continue; |
|
|
} |
|
|
|
|
462 |
cbpy = get_cbpy(bs, 1); |
cbpy = get_cbpy(bs, 1); |
463 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
464 |
|
|
478 |
} |
} |
479 |
|
|
480 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
481 |
intra_dc_threshold); |
intra_dc_threshold, bound); |
482 |
} |
} |
483 |
} |
} |
484 |
|
|
492 |
int y, |
int y, |
493 |
int k, |
int k, |
494 |
VECTOR * mv, |
VECTOR * mv, |
495 |
int fcode) |
int fcode, |
496 |
|
const int bound) |
497 |
{ |
{ |
498 |
|
|
499 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
508 |
int pmv_x, pmv_y; |
int pmv_x, pmv_y; |
509 |
|
|
510 |
|
|
511 |
get_pmvdata(dec->mbs, x, y, dec->mb_width, k, pmv, psad); |
get_pmvdata2(dec->mbs, x, y, dec->mb_width, k, pmv, psad, bound); |
512 |
|
|
513 |
pmv_x = pmv[0].x; |
pmv_x = pmv[0].x; |
514 |
pmv_y = pmv[0].y; |
pmv_y = pmv[0].y; |
516 |
mv_x = get_mv(bs, fcode); |
mv_x = get_mv(bs, fcode); |
517 |
mv_y = get_mv(bs, fcode); |
mv_y = get_mv(bs, fcode); |
518 |
|
|
519 |
|
DPRINTF(DPRINTF_MV,"mv_diff (%i,%i) pred (%i,%i)", mv_x, mv_y, pmv_x, pmv_y); |
520 |
|
|
521 |
mv_x += pmv_x; |
mv_x += pmv_x; |
522 |
mv_y += pmv_y; |
mv_y += pmv_y; |
523 |
|
|
549 |
{ |
{ |
550 |
|
|
551 |
uint32_t x, y; |
uint32_t x, y; |
552 |
|
uint32_t bound; |
553 |
|
|
554 |
start_timer(); |
start_timer(); |
555 |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
556 |
dec->width, dec->height, dec->interlacing); |
dec->width, dec->height, dec->interlacing); |
557 |
stop_edges_timer(); |
stop_edges_timer(); |
558 |
|
|
559 |
|
bound = 0; |
560 |
|
|
561 |
for (y = 0; y < dec->mb_height; y++) { |
for (y = 0; y < dec->mb_height; y++) { |
562 |
for (x = 0; x < dec->mb_width; x++) { |
for (x = 0; x < dec->mb_width; x++) { |
563 |
MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
MACROBLOCK *mb; |
564 |
|
|
565 |
|
// skip stuffing |
566 |
|
while (BitstreamShowBits(bs, 10) == 1) |
567 |
|
BitstreamSkip(bs, 10); |
568 |
|
|
569 |
|
if (check_resync_marker(bs, fcode - 1)) |
570 |
|
{ |
571 |
|
bound = read_video_packet_header(bs, fcode - 1, &quant); |
572 |
|
x = bound % dec->mb_width; |
573 |
|
y = bound / dec->mb_width; |
574 |
|
} |
575 |
|
mb = &dec->mbs[y * dec->mb_width + x]; |
576 |
|
|
577 |
|
DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); |
578 |
|
|
579 |
//if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) // not_coded |
//if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) // not_coded |
580 |
if (!(BitstreamGetBit(bs))) // not_coded |
if (!(BitstreamGetBit(bs))) // not_coded |
589 |
mcbpc = get_mcbpc_inter(bs); |
mcbpc = get_mcbpc_inter(bs); |
590 |
mb->mode = mcbpc & 7; |
mb->mode = mcbpc & 7; |
591 |
cbpc = (mcbpc >> 4); |
cbpc = (mcbpc >> 4); |
592 |
|
|
593 |
|
DPRINTF(DPRINTF_MB, "mode %i", mb->mode); |
594 |
|
DPRINTF(DPRINTF_MB, "cbpc %i", cbpc); |
595 |
acpred_flag = 0; |
acpred_flag = 0; |
596 |
|
|
597 |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
600 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
601 |
} |
} |
602 |
|
|
|
if (mb->mode == MODE_STUFFING) { |
|
|
DEBUG("-- STUFFING ?"); |
|
|
continue; |
|
|
} |
|
|
|
|
603 |
cbpy = get_cbpy(bs, intra); |
cbpy = get_cbpy(bs, intra); |
604 |
|
DPRINTF(DPRINTF_MB, "cbpy %i", cbpy); |
605 |
|
|
606 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
607 |
|
|
608 |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { |
609 |
quant += dquant_table[BitstreamGetBits(bs, 2)]; |
int dquant = dquant_table[BitstreamGetBits(bs, 2)]; |
610 |
|
DPRINTF(DPRINTF_MB, "dquant %i", dquant); |
611 |
|
quant += dquant; |
612 |
if (quant > 31) { |
if (quant > 31) { |
613 |
quant = 31; |
quant = 31; |
614 |
} else if (mb->quant < 1) { |
} else if (quant < 1) { |
615 |
quant = 1; |
quant = 1; |
616 |
} |
} |
617 |
|
DPRINTF(DPRINTF_MB, "quant %i", quant); |
618 |
} |
} |
619 |
mb->quant = quant; |
mb->quant = quant; |
620 |
|
|
638 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
639 |
if (dec->interlacing && mb->field_pred) { |
if (dec->interlacing && mb->field_pred) { |
640 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
641 |
fcode); |
fcode, bound); |
642 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
643 |
fcode); |
fcode, bound); |
644 |
} else { |
} else { |
645 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
646 |
fcode); |
fcode, bound); |
647 |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
648 |
mb->mvs[0].x; |
mb->mvs[0].x; |
649 |
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
651 |
} |
} |
652 |
} else if (mb->mode == |
} else if (mb->mode == |
653 |
MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */ ) { |
MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */ ) { |
654 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound); |
655 |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound); |
656 |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound); |
657 |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound); |
658 |
} else // MODE_INTRA, MODE_INTRA_Q |
} else // MODE_INTRA, MODE_INTRA_Q |
659 |
{ |
{ |
660 |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
662 |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
663 |
0; |
0; |
664 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
665 |
intra_dc_threshold); |
intra_dc_threshold, bound); |
666 |
continue; |
continue; |
667 |
} |
} |
668 |
|
|
1136 |
|
|
1137 |
if (quant > 31) { |
if (quant > 31) { |
1138 |
quant = 31; |
quant = 31; |
1139 |
} else if (mb->quant < 1) { |
} else if (quant < 1) { |
1140 |
quant = 1; |
quant = 1; |
1141 |
} |
} |
1142 |
} else { |
} else { |
1279 |
case P_VOP: |
case P_VOP: |
1280 |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
1281 |
intra_dc_threshold); |
intra_dc_threshold); |
1282 |
|
#ifdef BFRAMES_DEC |
1283 |
DEBUG1("P_VOP Time=", dec->time); |
DEBUG1("P_VOP Time=", dec->time); |
1284 |
|
#endif |
1285 |
break; |
break; |
1286 |
|
|
1287 |
case I_VOP: |
case I_VOP: |
1288 |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
1289 |
|
#ifdef BFRAMES_DEC |
1290 |
DEBUG1("I_VOP Time=", dec->time); |
DEBUG1("I_VOP Time=", dec->time); |
1291 |
|
#endif |
1292 |
break; |
break; |
1293 |
|
|
1294 |
case B_VOP: |
case B_VOP: |