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]); |
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; |
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 |
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} |
206 |
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else { |
207 |
dec->bs_version = 0xffff; /* Initialize to very high value -> assume bugfree stream */ |
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 |
} |
} |
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 |
|
|
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]; |
|
const int fcode_max = (fcode_forward>fcode_backward) ? fcode_forward : fcode_backward; |
|
1392 |
int intra_dc_threshold; /* fake variable */ |
int 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 = |
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) { |