33 |
#include "mbcoding.h" |
#include "mbcoding.h" |
34 |
|
|
35 |
|
|
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) |
|
38 |
|
static uint32_t __inline log2bin(uint32_t value) |
39 |
{ |
{ |
40 |
int n = 0; |
int n = 0; |
41 |
|
if (value & 0xffff0000) { |
42 |
while (value) { |
value >>= 16; |
43 |
value >>= 1; |
n += 16; |
44 |
n++; |
} |
45 |
|
if (value & 0xff00) { |
46 |
|
value >>= 8; |
47 |
|
n += 8; |
48 |
|
} |
49 |
|
if (value & 0xf0) { |
50 |
|
value >>= 4; |
51 |
|
n += 4; |
52 |
} |
} |
53 |
return n; |
return n + log2_tab_16[value]; |
54 |
} |
} |
55 |
|
|
|
|
|
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, |
65 |
}; |
}; |
66 |
|
|
67 |
|
|
68 |
void |
static void |
69 |
bs_get_matrix(Bitstream * bs, |
bs_get_matrix(Bitstream * bs, |
70 |
uint8_t * matrix) |
uint8_t * matrix) |
71 |
{ |
{ |
194 |
DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward); |
DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward); |
195 |
} |
} |
196 |
} |
} |
|
|
|
197 |
} |
} |
198 |
|
|
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, |
|
uint32_t * reduced_resolution, |
|
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, |
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 |
|
|
|
#if 0 |
|
|
dec->time_inc_resolution--; |
|
|
#endif |
|
|
|
|
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 { |
|
#if 0 |
|
|
dec->time_inc_bits = 0; |
|
|
#endif |
|
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 |
} |
} |
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 |
|
|
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"); |
|
} |
|
|
else |
|
|
{ |
|
|
*reduced_resolution = 0; |
|
865 |
} |
} |
866 |
|
|
867 |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
1076 |
int vol_profile = pParam->profile; |
int vol_profile = pParam->profile; |
1077 |
|
|
1078 |
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
1079 |
(pParam->vol_flags & XVID_VOL_GMC) || |
(pParam->vol_flags & XVID_VOL_GMC)) |
|
(pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
|
1080 |
vol_ver_id = 2; |
vol_ver_id = 2; |
1081 |
|
|
1082 |
if ((pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) { |
if ((pParam->vol_flags & (XVID_VOL_MPEGQUANT|XVID_VOL_QUARTERPEL|XVID_VOL_GMC|XVID_VOL_INTERLACING)) || |
1083 |
vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE; |
pParam->max_bframes>0) { |
|
} |
|
|
|
|
|
if ((pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
|
|
(pParam->vol_flags & XVID_VOL_GMC)) { |
|
1084 |
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
1085 |
} |
} |
1086 |
|
|
1237 |
|
|
1238 |
if (vol_ver_id != 1) { |
if (vol_ver_id != 1) { |
1239 |
BitstreamPutBit(bs, 0); /* newpred_enable */ |
BitstreamPutBit(bs, 0); /* newpred_enable */ |
1240 |
BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0); |
BitstreamPutBit(bs, 0); /* reduced_resolution_vop_enabled */ |
|
/* reduced_resolution_vop_enabled */ |
|
1241 |
} |
} |
1242 |
|
|
1243 |
BitstreamPutBit(bs, 0); /* scalability */ |
BitstreamPutBit(bs, 0); /* scalability */ |
1244 |
|
|
1245 |
BitstreamPadAlways(bs); /* next_start_code(); */ |
BitstreamPadAlways(bs); /* next_start_code(); */ |
1246 |
|
|
1247 |
/* fake divx5 id, to ensure compatibility with divx5 decoder */ |
/* divx5 userdata string */ |
1248 |
#define DIVX5_ID "DivX999b000p" |
#define DIVX5_ID ((char *)"DivX503b1393") |
1249 |
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) { |
if ((pParam->global_flags & XVID_GLOBAL_DIVX5_USERDATA)) { |
1250 |
BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
1251 |
|
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) |
1252 |
|
BitstreamPutBits(bs, 'p', 8); |
1253 |
} |
} |
1254 |
|
|
1255 |
/* xvid id */ |
/* xvid id */ |
1331 |
if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
1332 |
BitstreamPutBits(bs, frame->rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
1333 |
|
|
|
if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
|
|
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_REDUCED)?1:0); |
|
|
|
|
1334 |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
1335 |
|
|
1336 |
if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
1378 |
|
|
1379 |
void |
void |
1380 |
BitstreamWriteUserData(Bitstream * const bs, |
BitstreamWriteUserData(Bitstream * const bs, |
1381 |
uint8_t * data, |
const char *data, |
1382 |
const int length) |
const unsigned int length) |
1383 |
{ |
{ |
1384 |
int i; |
int i; |
1385 |
|
|
1391 |
} |
} |
1392 |
|
|
1393 |
} |
} |
1394 |
|
|
1395 |
|
/* |
1396 |
|
* Group of VOP |
1397 |
|
*/ |
1398 |
|
void |
1399 |
|
BitstreamWriteGroupOfVopHeader(Bitstream * const bs, |
1400 |
|
const MBParam * pParam, |
1401 |
|
uint32_t is_closed_gov) |
1402 |
|
{ |
1403 |
|
int64_t time = (pParam->m_stamp + (pParam->fbase/2)) / pParam->fbase; |
1404 |
|
int hours, minutes, seconds; |
1405 |
|
|
1406 |
|
/* compute time_code */ |
1407 |
|
seconds = time % 60; time /= 60; |
1408 |
|
minutes = time % 60; time /= 60; |
1409 |
|
hours = time % 24; /* don't overflow */ |
1410 |
|
|
1411 |
|
BitstreamPutBits(bs, GRPOFVOP_START_CODE, 32); |
1412 |
|
BitstreamPutBits(bs, hours, 5); |
1413 |
|
BitstreamPutBits(bs, minutes, 6); |
1414 |
|
BitstreamPutBit(bs, 1); |
1415 |
|
BitstreamPutBits(bs, seconds, 6); |
1416 |
|
BitstreamPutBits(bs, is_closed_gov, 1); |
1417 |
|
BitstreamPutBits(bs, 0, 1); /* broken_link */ |
1418 |
|
} |
1419 |
|
|
1420 |
|
/* |
1421 |
|
* End of Sequence |
1422 |
|
*/ |
1423 |
|
void |
1424 |
|
BitstreamWriteEndOfSequence(Bitstream * const bs) |
1425 |
|
{ |
1426 |
|
BitstreamPadAlways(bs); |
1427 |
|
BitstreamPutBits(bs, VISOBJSEQ_STOP_CODE, 32); |
1428 |
|
} |
1429 |
|
|
1430 |
|
/* |
1431 |
|
* Video Packet (resync marker) |
1432 |
|
*/ |
1433 |
|
|
1434 |
|
void write_video_packet_header(Bitstream * const bs, |
1435 |
|
const MBParam * pParam, |
1436 |
|
const FRAMEINFO * const frame, |
1437 |
|
int mbnum) |
1438 |
|
{ |
1439 |
|
const int mbnum_bits = log2bin(pParam->mb_width * pParam->mb_height - 1); |
1440 |
|
uint32_t nbitsresyncmarker; |
1441 |
|
|
1442 |
|
if (frame->coding_type == I_VOP) |
1443 |
|
nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER; /* 16 zeros followed by a 1. */ |
1444 |
|
else if (frame->coding_type == P_VOP) |
1445 |
|
nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER-1 + frame->fcode; |
1446 |
|
else /* B_VOP */ |
1447 |
|
nbitsresyncmarker = MAX(NUMBITS_VP_RESYNC_MARKER, NUMBITS_VP_RESYNC_MARKER-1 + MAX(frame->fcode, frame->bcode)); |
1448 |
|
|
1449 |
|
BitstreamPadAlways(bs); |
1450 |
|
BitstreamPutBits(bs, RESYNC_MARKER, nbitsresyncmarker); |
1451 |
|
BitstreamPutBits(bs, mbnum, mbnum_bits); |
1452 |
|
BitstreamPutBits(bs, frame->quant, 5); |
1453 |
|
BitstreamPutBit(bs, 0); /* hec */ |
1454 |
|
} |