33 |
#include "mbcoding.h" |
#include "mbcoding.h" |
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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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static uint32_t __inline log2bin(uint32_t value) |
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{ |
{ |
40 |
int n = 0; |
int n = 0; |
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if (value & 0xffff0000) { |
42 |
while (value) { |
value >>= 16; |
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value >>= 1; |
n += 16; |
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n++; |
} |
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if (value & 0xff00) { |
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value >>= 8; |
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n += 8; |
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} |
49 |
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if (value & 0xf0) { |
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value >>= 4; |
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n += 4; |
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} |
} |
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return n; |
return n + log2_tab_16[value]; |
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} |
} |
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56 |
static const uint32_t intra_dc_threshold_table[] = { |
static const uint32_t intra_dc_threshold_table[] = { |
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32, /* never use */ |
32, /* never use */ |
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13, |
13, |
65 |
}; |
}; |
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void |
static void |
69 |
bs_get_matrix(Bitstream * bs, |
bs_get_matrix(Bitstream * bs, |
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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); |
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} |
} |
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} |
} |
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} |
} |
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199 |
if (dec->newpred_enable) |
if (dec->newpred_enable) |
423 |
DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n"); |
DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n"); |
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} else if (start_code == VISOBJ_START_CODE) { |
} else if (start_code == VISOBJ_START_CODE) { |
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int visobj_ver_id; |
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426 |
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DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n"); |
DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n"); |
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BitstreamSkip(bs, 32); /* visual_object_start_code */ |
BitstreamSkip(bs, 32); /* visual_object_start_code */ |
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if (BitstreamGetBit(bs)) /* is_visual_object_identified */ |
if (BitstreamGetBit(bs)) /* is_visual_object_identified */ |
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{ |
{ |
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visobj_ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
dec->ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
433 |
DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", visobj_ver_id); |
DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", dec->ver_id); |
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BitstreamSkip(bs, 3); /* visual_object_priority */ |
BitstreamSkip(bs, 3); /* visual_object_priority */ |
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} else { |
} else { |
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visobj_ver_id = 1; |
dec->ver_id = 1; |
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} |
} |
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if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
482 |
DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id); |
DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id); |
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BitstreamSkip(bs, 3); /* video_object_layer_priority */ |
BitstreamSkip(bs, 3); /* video_object_layer_priority */ |
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} else { |
} else { |
485 |
vol_ver_id = 1; |
vol_ver_id = dec->ver_id; |
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} |
} |
487 |
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dec->aspect_ratio = BitstreamGetBits(bs, 4); |
dec->aspect_ratio = BitstreamGetBits(bs, 4); |
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dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ |
dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ |
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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); |
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#if 0 |
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dec->time_inc_resolution--; |
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#endif |
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551 |
if (dec->time_inc_resolution > 0) { |
if (dec->time_inc_resolution > 0) { |
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dec->time_inc_bits = MAX(log2bin(dec->time_inc_resolution-1), 1); |
dec->time_inc_bits = MAX(log2bin(dec->time_inc_resolution-1), 1); |
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} 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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/* for "old" xvid compatibility, set time_inc_bits = 1 */ |
/* for "old" xvid compatibility, set time_inc_bits = 1 */ |
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dec->time_inc_bits = 1; |
dec->time_inc_bits = 1; |
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} |
} |
1075 |
int vol_profile = pParam->profile; |
int vol_profile = pParam->profile; |
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1077 |
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
1078 |
(pParam->vol_flags & XVID_VOL_GMC) || |
(pParam->vol_flags & XVID_VOL_GMC)) |
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(pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
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1079 |
vol_ver_id = 2; |
vol_ver_id = 2; |
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if ((pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) { |
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vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE; |
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} |
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1081 |
if ((pParam->vol_flags & (XVID_VOL_MPEGQUANT|XVID_VOL_QUARTERPEL|XVID_VOL_GMC|XVID_VOL_INTERLACING)) || |
if ((pParam->vol_flags & (XVID_VOL_MPEGQUANT|XVID_VOL_QUARTERPEL|XVID_VOL_GMC|XVID_VOL_INTERLACING)) || |
1082 |
pParam->max_bframes>0) { |
pParam->max_bframes>0) { |
1083 |
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
1236 |
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1237 |
if (vol_ver_id != 1) { |
if (vol_ver_id != 1) { |
1238 |
BitstreamPutBit(bs, 0); /* newpred_enable */ |
BitstreamPutBit(bs, 0); /* newpred_enable */ |
1239 |
BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0); |
BitstreamPutBit(bs, 0); /* reduced_resolution_vop_enabled */ |
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/* reduced_resolution_vop_enabled */ |
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1240 |
} |
} |
1241 |
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BitstreamPutBit(bs, 0); /* scalability */ |
BitstreamPutBit(bs, 0); /* scalability */ |
1244 |
BitstreamPadAlways(bs); /* next_start_code(); */ |
BitstreamPadAlways(bs); /* next_start_code(); */ |
1245 |
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1246 |
/* divx5 userdata string */ |
/* divx5 userdata string */ |
1247 |
#define DIVX5_ID "DivX503b1393" |
#define DIVX5_ID ((char *)"DivX503b1393") |
1248 |
if ((pParam->global_flags & XVID_GLOBAL_DIVX5_USERDATA)) { |
if ((pParam->global_flags & XVID_GLOBAL_DIVX5_USERDATA)) { |
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BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
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if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) |
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) |
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if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
1331 |
BitstreamPutBits(bs, frame->rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
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if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
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BitstreamPutBit(bs, 0); |
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1333 |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
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if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
1377 |
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1378 |
void |
void |
1379 |
BitstreamWriteUserData(Bitstream * const bs, |
BitstreamWriteUserData(Bitstream * const bs, |
1380 |
uint8_t * data, |
const char *data, |
1381 |
const int length) |
const unsigned int length) |
1382 |
{ |
{ |
1383 |
int i; |
int i; |
1384 |
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1390 |
} |
} |
1391 |
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1392 |
} |
} |
1393 |
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1394 |
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/* |
1395 |
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* Group of VOP |
1396 |
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*/ |
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void |
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BitstreamWriteGroupOfVopHeader(Bitstream * const bs, |
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const MBParam * pParam, |
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uint32_t is_closed_gov) |
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{ |
1402 |
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int64_t time = (pParam->m_stamp + (pParam->fbase/2)) / pParam->fbase; |
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int hours, minutes, seconds; |
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/* compute time_code */ |
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seconds = time % 60; time /= 60; |
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minutes = time % 60; time /= 60; |
1408 |
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hours = time % 24; /* don't overflow */ |
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BitstreamPutBits(bs, GRPOFVOP_START_CODE, 32); |
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BitstreamPutBits(bs, hours, 5); |
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BitstreamPutBits(bs, minutes, 6); |
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BitstreamPutBit(bs, 1); |
1414 |
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BitstreamPutBits(bs, seconds, 6); |
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BitstreamPutBits(bs, is_closed_gov, 1); |
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BitstreamPutBits(bs, 0, 1); /* broken_link */ |
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} |
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/* |
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* End of Sequence |
1421 |
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*/ |
1422 |
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void |
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BitstreamWriteEndOfSequence(Bitstream * const bs) |
1424 |
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{ |
1425 |
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BitstreamPadAlways(bs); |
1426 |
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BitstreamPutBits(bs, VISOBJSEQ_STOP_CODE, 32); |
1427 |
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} |
1428 |
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/* |
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* Video Packet (resync marker) |
1431 |
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*/ |
1432 |
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void write_video_packet_header(Bitstream * const bs, |
1434 |
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const MBParam * pParam, |
1435 |
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const FRAMEINFO * const frame, |
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int mbnum) |
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{ |
1438 |
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const int mbnum_bits = log2bin(pParam->mb_width * pParam->mb_height - 1); |
1439 |
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uint32_t nbitsresyncmarker; |
1440 |
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1441 |
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if (frame->coding_type == I_VOP) |
1442 |
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nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER; /* 16 zeros followed by a 1. */ |
1443 |
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else if (frame->coding_type == P_VOP) |
1444 |
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nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER-1 + frame->fcode; |
1445 |
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else /* B_VOP */ |
1446 |
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nbitsresyncmarker = MAX(NUMBITS_VP_RESYNC_MARKER, NUMBITS_VP_RESYNC_MARKER-1 + MAX(frame->fcode, frame->bcode)); |
1447 |
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1448 |
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BitstreamPadAlways(bs); |
1449 |
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BitstreamPutBits(bs, RESYNC_MARKER, nbitsresyncmarker); |
1450 |
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BitstreamPutBits(bs, mbnum, mbnum_bits); |
1451 |
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BitstreamPutBits(bs, frame->quant, 5); |
1452 |
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BitstreamPutBit(bs, 0); /* hec */ |
1453 |
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} |