33 |
#include "mbcoding.h" |
#include "mbcoding.h" |
34 |
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35 |
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36 |
static uint32_t __inline |
static const uint8_t log2_tab_16[16] = { 0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4 }; |
37 |
log2bin(uint32_t value) |
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38 |
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static uint32_t __inline log2bin(uint32_t value) |
39 |
{ |
{ |
40 |
int n = 0; |
int n = 0; |
41 |
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if (value & 0xffff0000) { |
42 |
while (value) { |
value >>= 16; |
43 |
value >>= 1; |
n += 16; |
44 |
n++; |
} |
45 |
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if (value & 0xff00) { |
46 |
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value >>= 8; |
47 |
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n += 8; |
48 |
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} |
49 |
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if (value & 0xf0) { |
50 |
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value >>= 4; |
51 |
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n += 4; |
52 |
} |
} |
53 |
return n; |
return n + log2_tab_16[value]; |
54 |
} |
} |
55 |
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56 |
static const uint32_t intra_dc_threshold_table[] = { |
static const uint32_t intra_dc_threshold_table[] = { |
57 |
32, /* never use */ |
32, /* never use */ |
58 |
13, |
13, |
78 |
matrix[scan_tables[0][i++]] = value; |
matrix[scan_tables[0][i++]] = value; |
79 |
} |
} |
80 |
while (value != 0 && i < 64); |
while (value != 0 && i < 64); |
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i--; /* fix little bug at coeff not full */ |
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81 |
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82 |
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if (value != 0) return; |
83 |
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84 |
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i--; |
85 |
while (i < 64) { |
while (i < 64) { |
86 |
matrix[scan_tables[0][i++]] = last; |
matrix[scan_tables[0][i++]] = last; |
87 |
} |
} |
194 |
DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward); |
DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward); |
195 |
} |
} |
196 |
} |
} |
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197 |
} |
} |
198 |
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199 |
if (dec->newpred_enable) |
if (dec->newpred_enable) |
387 |
BitstreamReadHeaders(Bitstream * bs, |
BitstreamReadHeaders(Bitstream * bs, |
388 |
DECODER * dec, |
DECODER * dec, |
389 |
uint32_t * rounding, |
uint32_t * rounding, |
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uint32_t * reduced_resolution, |
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390 |
uint32_t * quant, |
uint32_t * quant, |
391 |
uint32_t * fcode_forward, |
uint32_t * fcode_forward, |
392 |
uint32_t * fcode_backward, |
uint32_t * fcode_backward, |
400 |
int32_t time_increment = 0; |
int32_t time_increment = 0; |
401 |
int resize = 0; |
int resize = 0; |
402 |
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403 |
do { |
while ((BitstreamPos(bs) >> 3) + 4 <= bs->length) { |
404 |
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405 |
BitstreamByteAlign(bs); |
BitstreamByteAlign(bs); |
406 |
start_code = BitstreamShowBits(bs, 32); |
start_code = BitstreamShowBits(bs, 32); |
549 |
dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ |
dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ |
550 |
DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i\n", dec->time_inc_resolution); |
DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i\n", dec->time_inc_resolution); |
551 |
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#if 0 |
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dec->time_inc_resolution--; |
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#endif |
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552 |
if (dec->time_inc_resolution > 0) { |
if (dec->time_inc_resolution > 0) { |
553 |
dec->time_inc_bits = MAX(log2bin(dec->time_inc_resolution-1), 1); |
dec->time_inc_bits = MAX(log2bin(dec->time_inc_resolution-1), 1); |
554 |
} else { |
} else { |
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#if 0 |
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dec->time_inc_bits = 0; |
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#endif |
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555 |
/* for "old" xvid compatibility, set time_inc_bits = 1 */ |
/* for "old" xvid compatibility, set time_inc_bits = 1 */ |
556 |
dec->time_inc_bits = 1; |
dec->time_inc_bits = 1; |
557 |
} |
} |
814 |
if (coding_type != B_VOP) { |
if (coding_type != B_VOP) { |
815 |
dec->last_time_base = dec->time_base; |
dec->last_time_base = dec->time_base; |
816 |
dec->time_base += time_incr; |
dec->time_base += time_incr; |
817 |
dec->time = time_increment; |
dec->time = dec->time_base*dec->time_inc_resolution + time_increment; |
818 |
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dec->time_pp = (int32_t)(dec->time - dec->last_non_b_time); |
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#if 0 |
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dec->time_base * dec->time_inc_resolution + |
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time_increment; |
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#endif |
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dec->time_pp = (uint32_t) |
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(dec->time_inc_resolution + dec->time - dec->last_non_b_time)%dec->time_inc_resolution; |
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819 |
dec->last_non_b_time = dec->time; |
dec->last_non_b_time = dec->time; |
820 |
} else { |
} else { |
821 |
dec->time = time_increment; |
dec->time = (dec->last_time_base + time_incr)*dec->time_inc_resolution + time_increment; |
822 |
#if 0 |
dec->time_bp = dec->time_pp - (int32_t)(dec->last_non_b_time - dec->time); |
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(dec->last_time_base + |
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time_incr) * dec->time_inc_resolution + time_increment; |
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#endif |
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dec->time_bp = (uint32_t) |
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(dec->time_inc_resolution + dec->last_non_b_time - dec->time)%dec->time_inc_resolution; |
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823 |
} |
} |
824 |
DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
825 |
DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); |
DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); |
860 |
dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
861 |
(coding_type == P_VOP || coding_type == I_VOP)) { |
(coding_type == P_VOP || coding_type == I_VOP)) { |
862 |
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863 |
*reduced_resolution = BitstreamGetBit(bs); |
if (BitstreamGetBit(bs)); |
864 |
DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution %i\n", *reduced_resolution); |
DPRINTF(XVID_DEBUG_ERROR, "RRV not supported (anymore)\n"); |
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} |
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else |
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{ |
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*reduced_resolution = 0; |
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865 |
} |
} |
866 |
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867 |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
986 |
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987 |
BitstreamSkip(bs, 32); /* user_data_start_code */ |
BitstreamSkip(bs, 32); /* user_data_start_code */ |
988 |
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989 |
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memset(tmp, 0, 256); |
990 |
tmp[0] = BitstreamShowBits(bs, 8); |
tmp[0] = BitstreamShowBits(bs, 8); |
991 |
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992 |
for(i = 1; i < 256; i++){ |
for(i = 1; i < 256; i++){ |
1009 |
else |
else |
1010 |
sscanf(tmp, "XviD%d", &dec->bs_version); |
sscanf(tmp, "XviD%d", &dec->bs_version); |
1011 |
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1012 |
DPRINTF(XVID_DEBUG_HEADER, "xvid bitstream version=%i", dec->bs_version); |
DPRINTF(XVID_DEBUG_HEADER, "xvid bitstream version=%i\n", dec->bs_version); |
1013 |
} |
} |
1014 |
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1015 |
/* divx detection */ |
/* divx detection */ |
1032 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 8); |
1033 |
} |
} |
1034 |
} |
} |
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while ((BitstreamPos(bs) >> 3) < bs->length); |
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1035 |
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1036 |
#if 0 |
#if 0 |
1037 |
DPRINTF("*** WARNING: no vop_start_code found"); |
DPRINTF("*** WARNING: no vop_start_code found"); |
1084 |
vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE; |
vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE; |
1085 |
} |
} |
1086 |
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1087 |
if ((pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
if ((pParam->vol_flags & (XVID_VOL_MPEGQUANT|XVID_VOL_QUARTERPEL|XVID_VOL_GMC|XVID_VOL_INTERLACING)) || |
1088 |
(pParam->vol_flags & XVID_VOL_GMC)) { |
pParam->max_bframes>0) { |
1089 |
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
1090 |
} |
} |
1091 |
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1250 |
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1251 |
BitstreamPadAlways(bs); /* next_start_code(); */ |
BitstreamPadAlways(bs); /* next_start_code(); */ |
1252 |
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1253 |
/* fake divx5 id, to ensure compatibility with divx5 decoder */ |
/* divx5 userdata string */ |
1254 |
#define DIVX5_ID "DivX999b000p" |
#define DIVX5_ID ((char *)"DivX503b1393") |
1255 |
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) { |
if ((pParam->global_flags & XVID_GLOBAL_DIVX5_USERDATA)) { |
1256 |
BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
1257 |
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if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) |
1258 |
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BitstreamPutBits(bs, 'p', 8); |
1259 |
} |
} |
1260 |
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1261 |
/* xvid id */ |
/* xvid id */ |
1338 |
BitstreamPutBits(bs, frame->rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
1339 |
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1340 |
if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
1341 |
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_REDUCED)?1:0); |
BitstreamPutBit(bs, 0); |
1342 |
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1343 |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
1344 |
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1387 |
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1388 |
void |
void |
1389 |
BitstreamWriteUserData(Bitstream * const bs, |
BitstreamWriteUserData(Bitstream * const bs, |
1390 |
uint8_t * data, |
const char *data, |
1391 |
const int length) |
const unsigned int length) |
1392 |
{ |
{ |
1393 |
int i; |
int i; |
1394 |
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1400 |
} |
} |
1401 |
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1402 |
} |
} |
1403 |
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1404 |
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/* |
1405 |
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* Group of VOP |
1406 |
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*/ |
1407 |
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void |
1408 |
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BitstreamWriteGroupOfVopHeader(Bitstream * const bs, |
1409 |
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const MBParam * pParam, |
1410 |
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uint32_t is_closed_gov) |
1411 |
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{ |
1412 |
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int64_t time = (pParam->m_stamp + (pParam->fbase/2)) / pParam->fbase; |
1413 |
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int hours, minutes, seconds; |
1414 |
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1415 |
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/* compute time_code */ |
1416 |
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seconds = time % 60; time /= 60; |
1417 |
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minutes = time % 60; time /= 60; |
1418 |
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hours = time % 24; /* don't overflow */ |
1419 |
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1420 |
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BitstreamPutBits(bs, GRPOFVOP_START_CODE, 32); |
1421 |
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BitstreamPutBits(bs, hours, 5); |
1422 |
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BitstreamPutBits(bs, minutes, 6); |
1423 |
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BitstreamPutBit(bs, 1); |
1424 |
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BitstreamPutBits(bs, seconds, 6); |
1425 |
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BitstreamPutBits(bs, is_closed_gov, 1); |
1426 |
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BitstreamPutBits(bs, 0, 1); /* broken_link */ |
1427 |
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} |
1428 |
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1429 |
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/* |
1430 |
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* End of Sequence |
1431 |
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*/ |
1432 |
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void |
1433 |
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BitstreamWriteEndOfSequence(Bitstream * const bs) |
1434 |
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{ |
1435 |
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BitstreamPadAlways(bs); |
1436 |
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BitstreamPutBits(bs, VISOBJSEQ_STOP_CODE, 32); |
1437 |
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} |
1438 |
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1439 |
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/* |
1440 |
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* Video Packet (resync marker) |
1441 |
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*/ |
1442 |
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1443 |
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void write_video_packet_header(Bitstream * const bs, |
1444 |
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const MBParam * pParam, |
1445 |
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const FRAMEINFO * const frame, |
1446 |
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int mbnum) |
1447 |
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{ |
1448 |
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const int mbnum_bits = log2bin(pParam->mb_width * pParam->mb_height - 1); |
1449 |
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uint32_t nbitsresyncmarker; |
1450 |
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1451 |
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if (frame->coding_type == I_VOP) |
1452 |
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nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER; /* 16 zeros followed by a 1. */ |
1453 |
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else if (frame->coding_type == P_VOP) |
1454 |
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nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER-1 + frame->fcode; |
1455 |
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else /* B_VOP */ |
1456 |
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nbitsresyncmarker = MAX(NUMBITS_VP_RESYNC_MARKER, NUMBITS_VP_RESYNC_MARKER-1 + MAX(frame->fcode, frame->bcode)); |
1457 |
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1458 |
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BitstreamPadAlways(bs); |
1459 |
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BitstreamPutBits(bs, RESYNC_MARKER, nbitsresyncmarker); |
1460 |
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BitstreamPutBits(bs, mbnum, mbnum_bits); |
1461 |
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BitstreamPutBits(bs, frame->quant, 5); |
1462 |
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BitstreamPutBit(bs, 0); /* hec */ |
1463 |
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} |