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#include "mbcoding.h" |
#include "mbcoding.h" |
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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 }; |
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log2bin(uint32_t value) |
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static uint32_t __inline log2bin(uint32_t value) |
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{ |
{ |
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int n = 0; |
int n = 0; |
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if (value & 0xffff0000) { |
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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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} |
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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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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, |
194 |
DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward); |
DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward); |
195 |
} |
} |
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} |
} |
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} |
} |
198 |
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if (dec->newpred_enable) |
if (dec->newpred_enable) |
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); |
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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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555 |
/* 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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} |
} |
1251 |
BitstreamPadAlways(bs); /* next_start_code(); */ |
BitstreamPadAlways(bs); /* next_start_code(); */ |
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1253 |
/* divx5 userdata string */ |
/* divx5 userdata string */ |
1254 |
#define DIVX5_ID "DivX503b1393" |
#define DIVX5_ID ((char *)"DivX503b1393") |
1255 |
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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void |
void |
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BitstreamWriteUserData(Bitstream * const bs, |
BitstreamWriteUserData(Bitstream * const bs, |
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uint8_t * data, |
const char *data, |
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const int length) |
const unsigned int length) |
1392 |
{ |
{ |
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int i; |
int i; |
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1400 |
} |
} |
1401 |
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1402 |
} |
} |
1403 |
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1404 |
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/* |
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* Group of VOP |
1406 |
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*/ |
1407 |
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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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{ |
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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; |
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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); |
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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 |
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*/ |
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void |
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BitstreamWriteEndOfSequence(Bitstream * const bs) |
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{ |
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BitstreamPadAlways(bs); |
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BitstreamPutBits(bs, VISOBJSEQ_STOP_CODE, 32); |
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} |
1438 |
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/* |
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* Video Packet (resync marker) |
1441 |
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*/ |
1442 |
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void write_video_packet_header(Bitstream * const bs, |
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const MBParam * pParam, |
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const FRAMEINFO * const frame, |
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int mbnum) |
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{ |
1448 |
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const int mbnum_bits = log2bin(pParam->mb_width * pParam->mb_height - 1); |
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uint32_t nbitsresyncmarker; |
1450 |
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1451 |
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if (frame->coding_type == I_VOP) |
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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) |
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nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER-1 + frame->fcode; |
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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)); |
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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); |
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BitstreamPutBits(bs, frame->quant, 5); |
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BitstreamPutBit(bs, 0); /* hec */ |
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} |