4 |
* - Decoder Module - |
* - Decoder Module - |
5 |
* |
* |
6 |
* Copyright(C) 2002 MinChen <chenm001@163.com> |
* Copyright(C) 2002 MinChen <chenm001@163.com> |
7 |
* 2002-2004 Peter Ross <pross@xvid.org> |
* 2002-2010 Peter Ross <pross@xvid.org> |
8 |
* |
* |
9 |
* This program is free software ; you can redistribute it and/or modify |
* This program is free software ; you can redistribute it and/or modify |
10 |
* it under the terms of the GNU General Public License as published by |
* it under the terms of the GNU General Public License as published by |
172 |
dec->width = create->width; |
dec->width = create->width; |
173 |
dec->height = create->height; |
dec->height = create->height; |
174 |
|
|
175 |
|
dec->num_threads = MAX(0, create->num_threads); |
176 |
|
|
177 |
image_null(&dec->cur); |
image_null(&dec->cur); |
178 |
image_null(&dec->refn[0]); |
image_null(&dec->refn[0]); |
179 |
image_null(&dec->refn[1]); |
image_null(&dec->refn[1]); |
197 |
dec->low_delay = 0; |
dec->low_delay = 0; |
198 |
dec->packed_mode = 0; |
dec->packed_mode = 0; |
199 |
dec->time_inc_resolution = 1; /* until VOL header says otherwise */ |
dec->time_inc_resolution = 1; /* until VOL header says otherwise */ |
200 |
|
dec->ver_id = 1; |
201 |
|
|
202 |
|
if (create->fourcc == ((int)('X')|((int)('V')<<8)| |
203 |
|
((int)('I')<<16)|((int)('D')<<24))) { /* XVID */ |
204 |
|
dec->bs_version = 0; /* Initially assume oldest xvid version */ |
205 |
|
} |
206 |
|
else { |
207 |
|
dec->bs_version = 0xffff; /* Initialize to very high value -> assume bugfree stream */ |
208 |
|
} |
209 |
|
|
210 |
dec->fixed_dimensions = (dec->width > 0 && dec->height > 0); |
dec->fixed_dimensions = (dec->width > 0 && dec->height > 0); |
211 |
|
|
212 |
if (dec->fixed_dimensions) |
if (dec->fixed_dimensions) { |
213 |
return decoder_resize(dec); |
int ret = decoder_resize(dec); |
214 |
|
if (ret == XVID_ERR_MEMORY) create->handle = NULL; |
215 |
|
return ret; |
216 |
|
} |
217 |
else |
else |
218 |
return 0; |
return 0; |
219 |
} |
} |
330 |
stop_iquant_timer(); |
stop_iquant_timer(); |
331 |
|
|
332 |
start_timer(); |
start_timer(); |
333 |
idct(&data[i * 64]); |
idct((short * const)&data[i * 64]); |
334 |
stop_idct_timer(); |
stop_idct_timer(); |
335 |
|
|
336 |
} |
} |
420 |
|
|
421 |
/* iDCT */ |
/* iDCT */ |
422 |
start_timer(); |
start_timer(); |
423 |
idct(&data[0]); |
idct((short * const)&data[0]); |
424 |
stop_idct_timer(); |
stop_idct_timer(); |
425 |
|
|
426 |
/* Add this residual to the predicted block */ |
/* Add this residual to the predicted block */ |
480 |
const uint32_t cbp, |
const uint32_t cbp, |
481 |
Bitstream * bs, |
Bitstream * bs, |
482 |
const uint32_t rounding, |
const uint32_t rounding, |
483 |
const int ref) |
const int ref, |
484 |
|
const int bvop) |
485 |
{ |
{ |
486 |
uint32_t stride = dec->edged_width; |
uint32_t stride = dec->edged_width; |
487 |
uint32_t stride2 = stride / 2; |
uint32_t stride2 = stride / 2; |
502 |
|
|
503 |
start_timer(); |
start_timer(); |
504 |
|
|
505 |
if (pMB->mode != MODE_INTER4V) { /* INTER, INTER_Q, NOT_CODED, FORWARD, BACKWARD */ |
if ((pMB->mode != MODE_INTER4V) || (bvop)) { /* INTER, INTER_Q, NOT_CODED, FORWARD, BACKWARD */ |
506 |
|
|
507 |
uv_dx = mv[0].x; |
uv_dx = mv[0].x; |
508 |
uv_dy = mv[0].y; |
uv_dy = mv[0].y; |
596 |
const uint32_t cbp, |
const uint32_t cbp, |
597 |
Bitstream * bs, |
Bitstream * bs, |
598 |
const uint32_t rounding, |
const uint32_t rounding, |
599 |
const int ref) |
const int ref, |
600 |
|
const int bvop) |
601 |
{ |
{ |
602 |
uint32_t stride = dec->edged_width; |
uint32_t stride = dec->edged_width; |
603 |
uint32_t stride2 = stride / 2; |
uint32_t stride2 = stride / 2; |
621 |
|
|
622 |
start_timer(); |
start_timer(); |
623 |
|
|
624 |
if(pMB->mode!=MODE_INTER4V) /* INTER, INTER_Q, NOT_CODED, FORWARD, BACKWARD */ |
if((pMB->mode!=MODE_INTER4V) || (bvop)) /* INTER, INTER_Q, NOT_CODED, FORWARD, BACKWARD */ |
625 |
{ |
{ |
626 |
/* Prepare top field vector */ |
/* Prepare top field vector */ |
627 |
uvtop_dx = DIV2ROUND(mv[0].x); |
uvtop_dx = DIV2ROUND(mv[0].x); |
759 |
bound = read_video_packet_header(bs, dec, 0, |
bound = read_video_packet_header(bs, dec, 0, |
760 |
&quant, NULL, NULL, &intra_dc_threshold); |
&quant, NULL, NULL, &intra_dc_threshold); |
761 |
x = bound % mb_width; |
x = bound % mb_width; |
762 |
y = bound / mb_width; |
y = MIN((bound / mb_width), (mb_height-1)); |
763 |
} |
} |
764 |
mb = &dec->mbs[y * dec->mb_width + x]; |
mb = &dec->mbs[y * dec->mb_width + x]; |
765 |
|
|
986 |
bound = read_video_packet_header(bs, dec, fcode - 1, |
bound = read_video_packet_header(bs, dec, fcode - 1, |
987 |
&quant, &fcode, NULL, &intra_dc_threshold); |
&quant, &fcode, NULL, &intra_dc_threshold); |
988 |
x = bound % mb_width; |
x = bound % mb_width; |
989 |
y = bound / mb_width; |
y = MIN((bound / mb_width), (mb_height-1)); |
990 |
} |
} |
991 |
mb = &dec->mbs[y * dec->mb_width + x]; |
mb = &dec->mbs[y * dec->mb_width + x]; |
992 |
|
|
1079 |
|
|
1080 |
/* See how to decode */ |
/* See how to decode */ |
1081 |
if(!mb->field_pred) |
if(!mb->field_pred) |
1082 |
decoder_mbinter(dec, mb, x, y, cbp, bs, rounding, 0); |
decoder_mbinter(dec, mb, x, y, cbp, bs, rounding, 0, 0); |
1083 |
else |
else |
1084 |
decoder_mbinter_field(dec, mb, x, y, cbp, bs, rounding, 0); |
decoder_mbinter_field(dec, mb, x, y, cbp, bs, rounding, 0, 0); |
1085 |
|
|
1086 |
} else if (gmc_warp) { /* a not coded S(GMC)-VOP macroblock */ |
} else if (gmc_warp) { /* a not coded S(GMC)-VOP macroblock */ |
1087 |
mb->mode = MODE_NOT_CODED_GMC; |
mb->mode = MODE_NOT_CODED_GMC; |
1102 |
mb->field_pred=0; /* (!) */ |
mb->field_pred=0; /* (!) */ |
1103 |
|
|
1104 |
decoder_mbinter(dec, mb, x, y, 0, bs, |
decoder_mbinter(dec, mb, x, y, 0, bs, |
1105 |
rounding, 0); |
rounding, 0, 0); |
1106 |
|
|
1107 |
if(dec->out_frm && cp_mb > 0) { |
if(dec->out_frm && cp_mb > 0) { |
1108 |
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
1204 |
b_uv_dy = (b_uv_dy >> 1) + roundtab_79[b_uv_dy & 0x3]; |
b_uv_dy = (b_uv_dy >> 1) + roundtab_79[b_uv_dy & 0x3]; |
1205 |
|
|
1206 |
} else { |
} else { |
1207 |
uv_dx = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
if (dec->quarterpel) { /* for qpel the /2 shall be done before summation. We've done it right in the encoder in the past. */ |
1208 |
uv_dy = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
/* TODO: figure out if we ever did it wrong on the encoder side. If yes, add some workaround */ |
|
b_uv_dx = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x; |
|
|
b_uv_dy = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y; |
|
|
|
|
|
if (dec->quarterpel) { |
|
1209 |
if (dec->bs_version <= BS_VERSION_BUGGY_CHROMA_ROUNDING) { |
if (dec->bs_version <= BS_VERSION_BUGGY_CHROMA_ROUNDING) { |
1210 |
uv_dx = (uv_dx>>1) | (uv_dx&1); |
int z; |
1211 |
uv_dy = (uv_dy>>1) | (uv_dy&1); |
uv_dx = 0; uv_dy = 0; |
1212 |
b_uv_dx = (b_uv_dx>>1) | (b_uv_dx&1); |
b_uv_dx = 0; b_uv_dy = 0; |
1213 |
b_uv_dy = (b_uv_dy>>1) | (b_uv_dy&1); |
for (z = 0; z < 4; z++) { |
1214 |
|
uv_dx += ((pMB->mvs[z].x>>1) | (pMB->mvs[z].x&1)); |
1215 |
|
uv_dy += ((pMB->mvs[z].y>>1) | (pMB->mvs[z].y&1)); |
1216 |
|
b_uv_dx += ((pMB->b_mvs[z].x>>1) | (pMB->b_mvs[z].x&1)); |
1217 |
|
b_uv_dy += ((pMB->b_mvs[z].y>>1) | (pMB->b_mvs[z].y&1)); |
1218 |
|
} |
1219 |
} |
} |
1220 |
else { |
else { |
1221 |
uv_dx /= 2; |
uv_dx = (pMB->mvs[0].x / 2) + (pMB->mvs[1].x / 2) + (pMB->mvs[2].x / 2) + (pMB->mvs[3].x / 2); |
1222 |
uv_dy /= 2; |
uv_dy = (pMB->mvs[0].y / 2) + (pMB->mvs[1].y / 2) + (pMB->mvs[2].y / 2) + (pMB->mvs[3].y / 2); |
1223 |
b_uv_dx /= 2; |
b_uv_dx = (pMB->b_mvs[0].x / 2) + (pMB->b_mvs[1].x / 2) + (pMB->b_mvs[2].x / 2) + (pMB->b_mvs[3].x / 2); |
1224 |
b_uv_dy /= 2; |
b_uv_dy = (pMB->b_mvs[0].y / 2) + (pMB->b_mvs[1].y / 2) + (pMB->b_mvs[2].y / 2) + (pMB->b_mvs[3].y / 2); |
1225 |
} |
} |
1226 |
|
} else { |
1227 |
|
uv_dx = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
1228 |
|
uv_dy = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
1229 |
|
b_uv_dx = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x; |
1230 |
|
b_uv_dy = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y; |
1231 |
} |
} |
1232 |
|
|
1233 |
uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf]; |
uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf]; |
1346 |
return -1; |
return -1; |
1347 |
} |
} |
1348 |
|
|
1349 |
|
static int __inline get_resync_len_b(const int fcode_backward, |
1350 |
|
const int fcode_forward) { |
1351 |
|
int resync_len = ((fcode_forward>fcode_backward) ? fcode_forward : fcode_backward) - 1; |
1352 |
|
if (resync_len < 1) resync_len = 1; |
1353 |
|
return resync_len; |
1354 |
|
} |
1355 |
|
|
1356 |
static void |
static void |
1357 |
decoder_bframe(DECODER * dec, |
decoder_bframe(DECODER * dec, |
1358 |
Bitstream * bs, |
Bitstream * bs, |
1364 |
VECTOR mv; |
VECTOR mv; |
1365 |
const VECTOR zeromv = {0,0}; |
const VECTOR zeromv = {0,0}; |
1366 |
int i; |
int i; |
1367 |
|
int resync_len; |
1368 |
|
|
1369 |
if (!dec->is_edged[0]) { |
if (!dec->is_edged[0]) { |
1370 |
start_timer(); |
start_timer(); |
1382 |
stop_edges_timer(); |
stop_edges_timer(); |
1383 |
} |
} |
1384 |
|
|
1385 |
|
resync_len = get_resync_len_b(fcode_backward, fcode_forward); |
1386 |
for (y = 0; y < dec->mb_height; y++) { |
for (y = 0; y < dec->mb_height; y++) { |
1387 |
/* Initialize Pred Motion Vector */ |
/* Initialize Pred Motion Vector */ |
1388 |
dec->p_fmv = dec->p_bmv = zeromv; |
dec->p_fmv = dec->p_bmv = zeromv; |
1389 |
for (x = 0; x < dec->mb_width; x++) { |
for (x = 0; x < dec->mb_width; x++) { |
1390 |
MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
1391 |
MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
1392 |
const int fcode_max = (fcode_forward>fcode_backward) ? fcode_forward : fcode_backward; |
int intra_dc_threshold; /* fake variable */ |
|
uint32_t intra_dc_threshold; /* fake variable */ |
|
1393 |
|
|
1394 |
if (check_resync_marker(bs, fcode_max - 1)) { |
if (check_resync_marker(bs, resync_len)) { |
1395 |
int bound = read_video_packet_header(bs, dec, fcode_max - 1, &quant, |
int bound = read_video_packet_header(bs, dec, resync_len, &quant, |
1396 |
&fcode_forward, &fcode_backward, &intra_dc_threshold); |
&fcode_forward, &fcode_backward, &intra_dc_threshold); |
1397 |
x = bound % dec->mb_width; |
x = bound % dec->mb_width; |
1398 |
y = bound / dec->mb_width; |
y = MIN((bound / dec->mb_width), (dec->mb_height-1)); |
1399 |
/* reset predicted macroblocks */ |
/* reset predicted macroblocks */ |
1400 |
dec->p_fmv = dec->p_bmv = zeromv; |
dec->p_fmv = dec->p_bmv = zeromv; |
1401 |
|
/* update resync len with new fcodes */ |
1402 |
|
resync_len = get_resync_len_b(fcode_backward, fcode_forward); |
1403 |
} |
} |
1404 |
|
|
1405 |
mv = |
mv = |
1416 |
if (last_mb->mode == MODE_NOT_CODED) { |
if (last_mb->mode == MODE_NOT_CODED) { |
1417 |
mb->cbp = 0; |
mb->cbp = 0; |
1418 |
mb->mode = MODE_FORWARD; |
mb->mode = MODE_FORWARD; |
1419 |
decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 1); |
decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 1, 1); |
1420 |
continue; |
continue; |
1421 |
} |
} |
1422 |
|
|
1499 |
get_b_motion_vector(bs, &mb->mvs[0], fcode_backward, dec->p_bmv, dec, x, y); |
get_b_motion_vector(bs, &mb->mvs[0], fcode_backward, dec->p_bmv, dec, x, y); |
1500 |
dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
1501 |
|
|
1502 |
decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0); |
decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1); |
1503 |
break; |
break; |
1504 |
|
|
1505 |
case MODE_FORWARD: |
case MODE_FORWARD: |
1506 |
get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv, dec, x, y); |
get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv, dec, x, y); |
1507 |
dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
1508 |
|
|
1509 |
decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 1); |
decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 1, 1); |
1510 |
break; |
break; |
1511 |
|
|
1512 |
default: |
default: |
1517 |
} |
} |
1518 |
|
|
1519 |
/* perform post processing if necessary, and output the image */ |
/* perform post processing if necessary, and output the image */ |
1520 |
void decoder_output(DECODER * dec, IMAGE * img, MACROBLOCK * mbs, |
static void decoder_output(DECODER * dec, IMAGE * img, MACROBLOCK * mbs, |
1521 |
xvid_dec_frame_t * frame, xvid_dec_stats_t * stats, |
xvid_dec_frame_t * frame, xvid_dec_stats_t * stats, |
1522 |
int coding_type, int quant) |
int coding_type, int quant) |
1523 |
{ |
{ |
1533 |
image_copy(&dec->tmp, img, dec->edged_width, dec->height); |
image_copy(&dec->tmp, img, dec->edged_width, dec->height); |
1534 |
image_postproc(&dec->postproc, &dec->tmp, dec->edged_width, |
image_postproc(&dec->postproc, &dec->tmp, dec->edged_width, |
1535 |
mbs, dec->mb_width, dec->mb_height, dec->mb_width, |
mbs, dec->mb_width, dec->mb_height, dec->mb_width, |
1536 |
frame->general, brightness, dec->frames, (coding_type == B_VOP)); |
frame->general, brightness, dec->frames, (coding_type == B_VOP), dec->num_threads); |
1537 |
img = &dec->tmp; |
img = &dec->tmp; |
1538 |
} |
} |
1539 |
|
|
1639 |
if (coding_type == -2 || coding_type == -3) { /* vol and/or resize */ |
if (coding_type == -2 || coding_type == -3) { /* vol and/or resize */ |
1640 |
|
|
1641 |
if (coding_type == -3) |
if (coding_type == -3) |
1642 |
decoder_resize(dec); |
if (decoder_resize(dec)) return XVID_ERR_MEMORY; |
1643 |
|
|
1644 |
if(stats) { |
if(stats) { |
1645 |
stats->type = XVID_TYPE_VOL; |
stats->type = XVID_TYPE_VOL; |
1662 |
goto repeat; |
goto repeat; |
1663 |
} |
} |
1664 |
|
|
1665 |
dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.y = dec->p_fmv.y = 0; /* init pred vector to 0 */ |
dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.x = dec->p_fmv.y = 0; /* init pred vector to 0 */ |
1666 |
|
|
1667 |
/* packed_mode: special-N_VOP treament */ |
/* packed_mode: special-N_VOP treament */ |
1668 |
if (dec->packed_mode && coding_type == N_VOP) { |
if (dec->packed_mode && coding_type == N_VOP) { |