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> |
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* |
* |
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 |
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175 |
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dec->num_threads = MAX(0, create->num_threads); |
176 |
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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 |
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202 |
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if (create->fourcc == ((int)('X')|((int)('V')<<8)| |
203 |
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((int)('I')<<16)|((int)('D')<<24))) { /* XVID */ |
204 |
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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 |
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} |
209 |
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210 |
dec->fixed_dimensions = (dec->width > 0 && dec->height > 0); |
dec->fixed_dimensions = (dec->width > 0 && dec->height > 0); |
211 |
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1391 |
MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
1392 |
int intra_dc_threshold; /* fake variable */ |
int intra_dc_threshold; /* fake variable */ |
1393 |
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if (check_resync_marker(bs, resync_len)) { |
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int bound = read_video_packet_header(bs, dec, resync_len, &quant, |
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&fcode_forward, &fcode_backward, &intra_dc_threshold); |
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x = bound % dec->mb_width; |
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y = MIN((bound / dec->mb_width), (dec->mb_height-1)); |
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/* reset predicted macroblocks */ |
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dec->p_fmv = dec->p_bmv = zeromv; |
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/* update resync len with new fcodes */ |
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resync_len = get_resync_len_b(fcode_backward, fcode_forward); |
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} |
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1394 |
mv = |
mv = |
1395 |
mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = |
mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = |
1396 |
mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv; |
mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv; |
1409 |
continue; |
continue; |
1410 |
} |
} |
1411 |
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1412 |
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if (check_resync_marker(bs, resync_len)) { |
1413 |
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int bound = read_video_packet_header(bs, dec, resync_len, &quant, |
1414 |
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&fcode_forward, &fcode_backward, &intra_dc_threshold); |
1415 |
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1416 |
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bound = MAX(0, bound-1); /* valid bound must always be >0 */ |
1417 |
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x = bound % dec->mb_width; |
1418 |
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y = MIN((bound / dec->mb_width), (dec->mb_height-1)); |
1419 |
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/* reset predicted macroblocks */ |
1420 |
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dec->p_fmv = dec->p_bmv = zeromv; |
1421 |
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/* update resync len with new fcodes */ |
1422 |
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resync_len = get_resync_len_b(fcode_backward, fcode_forward); |
1423 |
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continue; /* re-init loop */ |
1424 |
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} |
1425 |
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1426 |
if (!BitstreamGetBit(bs)) { /* modb=='0' */ |
if (!BitstreamGetBit(bs)) { /* modb=='0' */ |
1427 |
const uint8_t modb2 = BitstreamGetBit(bs); |
const uint8_t modb2 = BitstreamGetBit(bs); |
1428 |
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1536 |
image_copy(&dec->tmp, img, dec->edged_width, dec->height); |
image_copy(&dec->tmp, img, dec->edged_width, dec->height); |
1537 |
image_postproc(&dec->postproc, &dec->tmp, dec->edged_width, |
image_postproc(&dec->postproc, &dec->tmp, dec->edged_width, |
1538 |
mbs, dec->mb_width, dec->mb_height, dec->mb_width, |
mbs, dec->mb_width, dec->mb_height, dec->mb_width, |
1539 |
frame->general, brightness, dec->frames, (coding_type == B_VOP)); |
frame->general, brightness, dec->frames, (coding_type == B_VOP), dec->num_threads); |
1540 |
img = &dec->tmp; |
img = &dec->tmp; |
1541 |
} |
} |
1542 |
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1665 |
goto repeat; |
goto repeat; |
1666 |
} |
} |
1667 |
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1668 |
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 */ |
1669 |
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1670 |
/* packed_mode: special-N_VOP treament */ |
/* packed_mode: special-N_VOP treament */ |
1671 |
if (dec->packed_mode && coding_type == N_VOP) { |
if (dec->packed_mode && coding_type == N_VOP) { |