3 |
* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
4 |
* - Decoder main module - |
* - Decoder main module - |
5 |
* |
* |
6 |
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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 |
36 |
* 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> |
|
40 |
* 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 |
42 |
* MinChen <chenm001@163.com> |
* MinChen <chenm001@163.com> |
56 |
* 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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* |
* |
61 |
* $Id$ |
* $Id$ |
62 |
* |
* |
382 |
|
|
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, |
512 |
|
|
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 |
} |
} |
517 |
|
|
518 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
588 |
|
|
589 |
start_timer(); |
start_timer(); |
590 |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
591 |
dec->width, dec->height, dec->interlacing); |
dec->width, dec->height); |
592 |
stop_edges_timer(); |
stop_edges_timer(); |
593 |
|
|
594 |
bound = 0; |
bound = 0; |
656 |
mb->quant = quant; |
mb->quant = quant; |
657 |
|
|
658 |
if (dec->interlacing) { |
if (dec->interlacing) { |
659 |
|
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); |
662 |
|
} |
663 |
|
|
664 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
665 |
mb->field_pred = BitstreamGetBit(bs); |
mb->field_pred = BitstreamGetBit(bs); |
666 |
DEBUG1("decp: field_pred: ", mb->field_pred); |
DPRINTF(DPRINTF_DEBUG, "decp: field_pred: %d", mb->field_pred); |
667 |
|
|
668 |
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); |
672 |
DEBUG1("decp: field_for_bot: ", mb->field_for_bot); |
DPRINTF(DPRINTF_DEBUG, "decp: field_for_bot: %d", mb->field_for_bot); |
673 |
} |
} |
674 |
} |
} |
675 |
} |
} |
709 |
rounding); |
rounding); |
710 |
} else // not coded |
} else // not coded |
711 |
{ |
{ |
712 |
DEBUG2("P-frame MB at (X,Y)=",x,y); |
DPRINTF(DPRINTF_DEBUG, "P-frame MB at (X,Y)=(%d,%d)", x, y); |
713 |
|
|
714 |
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; |
716 |
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; |
1146 |
|
|
1147 |
start_timer(); |
start_timer(); |
1148 |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
1149 |
dec->width, dec->height, dec->interlacing); |
dec->width, dec->height); |
1150 |
image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, |
image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, |
1151 |
dec->width, dec->height, dec->interlacing); |
dec->width, dec->height); |
1152 |
stop_edges_timer(); |
stop_edges_timer(); |
1153 |
|
|
1154 |
#ifdef BFRAMES_DEC_DEBUG |
#ifdef BFRAMES_DEC_DEBUG |
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; |
1383 |
|
|
1384 |
#ifdef BFRAMES_DEC |
#ifdef BFRAMES_DEC |
1385 |
// test if no B_VOP |
// test if no B_VOP |
1386 |
if (dec->low_delay) { |
if (dec->low_delay || dec->frames == 0) { |
1387 |
#endif |
#endif |
1388 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
1389 |
frame->image, frame->stride, frame->colorspace); |
frame->image, frame->stride, frame->colorspace); |
1390 |
|
|
1391 |
#ifdef BFRAMES_DEC |
#ifdef BFRAMES_DEC |
1392 |
} else { |
} else { |
1393 |
if (dec->frames >= 0) { |
if (dec->frames >= 1) { |
1394 |
start_timer(); |
start_timer(); |
1395 |
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
1396 |
image_output(&dec->refn[0], dec->width, dec->height, |
image_output(&dec->refn[0], dec->width, dec->height, |