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* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
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* - Decoder main module - |
* - Decoder main module - |
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* |
* |
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* Copyright(C) 2002 MinChen <chenm001@163.com> |
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* 2002 Peter Ross <pross@xvid.org> |
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* |
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* This program is an implementation of a part of one or more MPEG-4 |
* This program is an implementation of a part of one or more MPEG-4 |
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* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
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* to use this software module in hardware or software products are |
* to use this software module in hardware or software products are |
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* History: |
* History: |
37 |
* |
* |
38 |
* 15.07.2002 fix a bug in B-frame decode at DIRECT mode |
* 15.07.2002 fix a bug in B-frame decode at DIRECT mode |
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* MinChen <chenm001@163.com> |
|
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* 10.07.2002 added BFRAMES_DEC_DEBUG support |
* 10.07.2002 added BFRAMES_DEC_DEBUG support |
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* Fix a little bug for low_delay flage |
* Fix a little bug for low_delay flage |
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* MinChen <chenm001@163.com> |
* MinChen <chenm001@163.com> |
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* 26.03.2002 interlacing support - moved transfers outside decode loop |
* 26.03.2002 interlacing support - moved transfers outside decode loop |
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* 26.12.2001 decoder_mbinter: dequant/idct moved within if(coded) block |
* 26.12.2001 decoder_mbinter: dequant/idct moved within if(coded) block |
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* 22.12.2001 lock based interpolation |
* 22.12.2001 lock based interpolation |
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* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
* 01.12.2001 inital version; (c)2001 peter ross <pross@xvid.org> |
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* |
* |
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* $Id$ |
* $Id$ |
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* |
* |
271 |
start_timer(); |
start_timer(); |
272 |
if (cbp & (1 << (5 - i))) // coded |
if (cbp & (1 << (5 - i))) // coded |
273 |
{ |
{ |
274 |
int direction = dec->alternate_vertical_scan ? |
get_intra_block(bs, &block[i * 64], pMB->acpred_directions[i], |
275 |
2 : pMB->acpred_directions[i]; |
start_coeff); |
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get_intra_block(bs, &block[i * 64], direction, start_coeff); |
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276 |
} |
} |
277 |
stop_coding_timer(); |
stop_coding_timer(); |
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382 |
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383 |
start_timer(); |
start_timer(); |
384 |
if(dec->quarterpel) { |
if(dec->quarterpel) { |
385 |
DEBUG("QUARTERPEL"); |
DPRINTF(DPRINTF_DEBUG, "QUARTERPEL\n"); |
386 |
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, |
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, |
387 |
pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
388 |
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos, |
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos, |
410 |
stop_comp_timer(); |
stop_comp_timer(); |
411 |
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412 |
for (i = 0; i < 6; i++) { |
for (i = 0; i < 6; i++) { |
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int direction = dec->alternate_vertical_scan ? 2 : 0; |
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413 |
if (cbp & (1 << (5 - i))) // coded |
if (cbp & (1 << (5 - i))) // coded |
414 |
{ |
{ |
415 |
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
416 |
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417 |
start_timer(); |
start_timer(); |
418 |
get_inter_block(bs, &block[i * 64], direction); |
get_inter_block(bs, &block[i * 64]); |
419 |
stop_coding_timer(); |
stop_coding_timer(); |
420 |
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421 |
start_timer(); |
start_timer(); |
512 |
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513 |
if (dec->interlacing) { |
if (dec->interlacing) { |
514 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
515 |
DEBUG1("deci: field_dct: ", mb->field_dct); |
DPRINTF(DPRINTF_DEBUG, "deci: field_dct: %d", mb->field_dct); |
516 |
} |
} |
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|
|
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decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
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if (dec->interlacing) { |
if (dec->interlacing) { |
659 |
if (cbp || intra) { |
if (cbp || intra) { |
660 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
661 |
DEBUG1("decp: field_dct: ", mb->field_dct); |
DPRINTF(DPRINTF_DEBUG, "decp: field_dct: %d", mb->field_dct); |
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} |
} |
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|
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if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
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mb->field_pred = BitstreamGetBit(bs); |
mb->field_pred = BitstreamGetBit(bs); |
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DEBUG1("decp: field_pred: ", mb->field_pred); |
DPRINTF(DPRINTF_DEBUG, "decp: field_pred: %d", mb->field_pred); |
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|
|
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if (mb->field_pred) { |
if (mb->field_pred) { |
669 |
mb->field_for_top = BitstreamGetBit(bs); |
mb->field_for_top = BitstreamGetBit(bs); |
670 |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
DPRINTF(DPRINTF_DEBUG, "decp: field_for_top: %d", mb->field_for_top); |
671 |
mb->field_for_bot = BitstreamGetBit(bs); |
mb->field_for_bot = BitstreamGetBit(bs); |
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DEBUG1("decp: field_for_bot: ", mb->field_for_bot); |
DPRINTF(DPRINTF_DEBUG, "decp: field_for_bot: %d", mb->field_for_bot); |
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} |
} |
674 |
} |
} |
675 |
} |
} |
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rounding); |
rounding); |
710 |
} else // not coded |
} else // not coded |
711 |
{ |
{ |
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DEBUG2("P-frame MB at (X,Y)=",x,y); |
DPRINTF(DPRINTF_DEBUG, "P-frame MB at (X,Y)=(%d,%d)", x, y); |
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|
|
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mb->mode = MODE_NOT_CODED; |
mb->mode = MODE_NOT_CODED; |
715 |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
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mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
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stop_comp_timer(); |
stop_comp_timer(); |
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for (i = 0; i < 6; i++) { |
for (i = 0; i < 6; i++) { |
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int direction = dec->alternate_vertical_scan ? 2 : 0; |
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if (cbp & (1 << (5 - i))) // coded |
if (cbp & (1 << (5 - i))) // coded |
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{ |
{ |
885 |
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
886 |
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|
887 |
start_timer(); |
start_timer(); |
888 |
get_inter_block(bs, &block[i * 64], direction); |
get_inter_block(bs, &block[i * 64]); |
889 |
stop_coding_timer(); |
stop_coding_timer(); |
890 |
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|
891 |
start_timer(); |
start_timer(); |
1046 |
stop_comp_timer(); |
stop_comp_timer(); |
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1048 |
for (i = 0; i < 6; i++) { |
for (i = 0; i < 6; i++) { |
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int direction = dec->alternate_vertical_scan ? 2 : 0; |
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1049 |
if (cbp & (1 << (5 - i))) // coded |
if (cbp & (1 << (5 - i))) // coded |
1050 |
{ |
{ |
1051 |
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
1052 |
|
|
1053 |
start_timer(); |
start_timer(); |
1054 |
get_inter_block(bs, &block[i * 64], direction); |
get_inter_block(bs, &block[i * 64]); |
1055 |
stop_coding_timer(); |
stop_coding_timer(); |
1056 |
|
|
1057 |
start_timer(); |
start_timer(); |
1282 |
break; |
break; |
1283 |
|
|
1284 |
default: |
default: |
1285 |
DEBUG1("Not support B-frame mb_type =", mb->mb_type); |
DPRINTF(DPRINTF_ERROR, "Not support B-frame mb_type = %d", mb->mb_type); |
1286 |
} |
} |
1287 |
|
|
1288 |
} // end of FOR |
} // end of FOR |
1340 |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
1341 |
intra_dc_threshold); |
intra_dc_threshold); |
1342 |
#ifdef BFRAMES_DEC |
#ifdef BFRAMES_DEC |
1343 |
DEBUG1("P_VOP Time=", dec->time); |
DPRINTF(DPRINTF_DEBUG, "P_VOP Time=%d", dec->time); |
1344 |
#endif |
#endif |
1345 |
break; |
break; |
1346 |
|
|
1347 |
case I_VOP: |
case I_VOP: |
1348 |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
1349 |
#ifdef BFRAMES_DEC |
#ifdef BFRAMES_DEC |
1350 |
DEBUG1("I_VOP Time=", dec->time); |
DPRINTF(DPRINTF_DEBUG, "I_VOP Time=%d", dec->time); |
1351 |
#endif |
#endif |
1352 |
break; |
break; |
1353 |
|
|
1354 |
case B_VOP: |
case B_VOP: |
1355 |
#ifdef BFRAMES_DEC |
#ifdef BFRAMES_DEC |
1356 |
if (dec->time_pp > dec->time_bp) { |
if (dec->time_pp > dec->time_bp) { |
1357 |
DEBUG1("B_VOP Time=", dec->time); |
DPRINTF(DPRINTF_DEBUG, "B_VOP Time=%d", dec->time); |
1358 |
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
1359 |
} else { |
} else { |
1360 |
DEBUG("broken B-frame!"); |
DPRINTF(DPRINTF_DEBUG, "Broken B_VOP"); |
1361 |
} |
} |
1362 |
#else |
#else |
1363 |
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1375 |
|
|
1376 |
#ifdef BFRAMES_DEC_DEBUG |
#ifdef BFRAMES_DEC_DEBUG |
1377 |
if (frame->length != BitstreamPos(&bs) / 8){ |
if (frame->length != BitstreamPos(&bs) / 8){ |
1378 |
DEBUG2("InLen/UseLen",frame->length, BitstreamPos(&bs) / 8); |
DPRINTF(DPRINTF_DEBUG, "InLen: %d / UseLen: %d", frame->length, BitstreamPos(&bs) / 8); |
1379 |
} |
} |
1380 |
#endif |
#endif |
1381 |
frame->length = BitstreamPos(&bs) / 8; |
frame->length = BitstreamPos(&bs) / 8; |