20 |
* along with this program ; if not, write to the Free Software |
* along with this program ; if not, write to the Free Software |
21 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
22 |
* |
* |
23 |
* $Id: bitstream.c,v 1.42 2004-03-22 22:36:23 edgomez Exp $ |
* $Id: bitstream.c,v 1.48 2004-12-05 13:56:13 syskin Exp $ |
24 |
* |
* |
25 |
****************************************************************************/ |
****************************************************************************/ |
26 |
|
|
71 |
matrix[scan_tables[0][i++]] = value; |
matrix[scan_tables[0][i++]] = value; |
72 |
} |
} |
73 |
while (value != 0 && i < 64); |
while (value != 0 && i < 64); |
|
i--; /* fix little bug at coeff not full */ |
|
74 |
|
|
75 |
|
if (value != 0) return; |
76 |
|
|
77 |
|
i--; |
78 |
while (i < 64) { |
while (i < 64) { |
79 |
matrix[scan_tables[0][i++]] = last; |
matrix[scan_tables[0][i++]] = last; |
80 |
} |
} |
381 |
BitstreamReadHeaders(Bitstream * bs, |
BitstreamReadHeaders(Bitstream * bs, |
382 |
DECODER * dec, |
DECODER * dec, |
383 |
uint32_t * rounding, |
uint32_t * rounding, |
|
uint32_t * reduced_resolution, |
|
384 |
uint32_t * quant, |
uint32_t * quant, |
385 |
uint32_t * fcode_forward, |
uint32_t * fcode_forward, |
386 |
uint32_t * fcode_backward, |
uint32_t * fcode_backward, |
394 |
int32_t time_increment = 0; |
int32_t time_increment = 0; |
395 |
int resize = 0; |
int resize = 0; |
396 |
|
|
397 |
do { |
while ((BitstreamPos(bs) >> 3) + 4 <= bs->length) { |
398 |
|
|
399 |
BitstreamByteAlign(bs); |
BitstreamByteAlign(bs); |
400 |
start_code = BitstreamShowBits(bs, 32); |
start_code = BitstreamShowBits(bs, 32); |
548 |
#endif |
#endif |
549 |
|
|
550 |
if (dec->time_inc_resolution > 0) { |
if (dec->time_inc_resolution > 0) { |
551 |
dec->time_inc_bits = log2bin(dec->time_inc_resolution-1); |
dec->time_inc_bits = MAX(log2bin(dec->time_inc_resolution-1), 1); |
552 |
} else { |
} else { |
553 |
#if 0 |
#if 0 |
554 |
dec->time_inc_bits = 0; |
dec->time_inc_bits = 0; |
815 |
if (coding_type != B_VOP) { |
if (coding_type != B_VOP) { |
816 |
dec->last_time_base = dec->time_base; |
dec->last_time_base = dec->time_base; |
817 |
dec->time_base += time_incr; |
dec->time_base += time_incr; |
818 |
dec->time = time_increment; |
dec->time = dec->time_base*dec->time_inc_resolution + time_increment; |
819 |
|
dec->time_pp = (int32_t)(dec->time - dec->last_non_b_time); |
|
#if 0 |
|
|
dec->time_base * dec->time_inc_resolution + |
|
|
time_increment; |
|
|
#endif |
|
|
dec->time_pp = (uint32_t) |
|
|
(dec->time_inc_resolution + dec->time - dec->last_non_b_time)%dec->time_inc_resolution; |
|
820 |
dec->last_non_b_time = dec->time; |
dec->last_non_b_time = dec->time; |
821 |
} else { |
} else { |
822 |
dec->time = time_increment; |
dec->time = (dec->last_time_base + time_incr)*dec->time_inc_resolution + time_increment; |
823 |
#if 0 |
dec->time_bp = dec->time_pp - (int32_t)(dec->last_non_b_time - dec->time); |
|
(dec->last_time_base + |
|
|
time_incr) * dec->time_inc_resolution + time_increment; |
|
|
#endif |
|
|
dec->time_bp = (uint32_t) |
|
|
(dec->time_inc_resolution + dec->last_non_b_time - dec->time)%dec->time_inc_resolution; |
|
824 |
} |
} |
825 |
DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
826 |
DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); |
DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); |
861 |
dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
862 |
(coding_type == P_VOP || coding_type == I_VOP)) { |
(coding_type == P_VOP || coding_type == I_VOP)) { |
863 |
|
|
864 |
*reduced_resolution = BitstreamGetBit(bs); |
if (BitstreamGetBit(bs)); |
865 |
DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution %i\n", *reduced_resolution); |
DPRINTF(XVID_DEBUG_ERROR, "RRV not supported (anymore)\n"); |
|
} |
|
|
else |
|
|
{ |
|
|
*reduced_resolution = 0; |
|
866 |
} |
} |
867 |
|
|
868 |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
987 |
|
|
988 |
BitstreamSkip(bs, 32); /* user_data_start_code */ |
BitstreamSkip(bs, 32); /* user_data_start_code */ |
989 |
|
|
990 |
|
memset(tmp, 0, 256); |
991 |
tmp[0] = BitstreamShowBits(bs, 8); |
tmp[0] = BitstreamShowBits(bs, 8); |
992 |
|
|
993 |
for(i = 1; i < 256; i++){ |
for(i = 1; i < 256; i++){ |
1010 |
else |
else |
1011 |
sscanf(tmp, "XviD%d", &dec->bs_version); |
sscanf(tmp, "XviD%d", &dec->bs_version); |
1012 |
|
|
1013 |
DPRINTF(XVID_DEBUG_HEADER, "xvid bitstream version=%i", dec->bs_version); |
DPRINTF(XVID_DEBUG_HEADER, "xvid bitstream version=%i\n", dec->bs_version); |
1014 |
} |
} |
1015 |
|
|
1016 |
/* divx detection */ |
/* divx detection */ |
1033 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 8); |
1034 |
} |
} |
1035 |
} |
} |
|
while ((BitstreamPos(bs) >> 3) < bs->length); |
|
1036 |
|
|
1037 |
#if 0 |
#if 0 |
1038 |
DPRINTF("*** WARNING: no vop_start_code found"); |
DPRINTF("*** WARNING: no vop_start_code found"); |
1183 |
|
|
1184 |
if (pParam->fincr>0) { |
if (pParam->fincr>0) { |
1185 |
BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ |
BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ |
1186 |
BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase-1)); /* fixed_vop_time_increment */ |
BitstreamPutBits(bs, pParam->fincr, MAX(log2bin(pParam->fbase-1),1)); /* fixed_vop_time_increment */ |
1187 |
}else{ |
}else{ |
1188 |
BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */ |
BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */ |
1189 |
} |
} |
1258 |
} |
} |
1259 |
|
|
1260 |
/* xvid id */ |
/* xvid id */ |
|
#define XVID_ID "XviD" XVID_BS_VERSION |
|
1261 |
{ |
{ |
1262 |
char xvid_id_string[100]; |
const char xvid_user_format[] = "XviD%04d%c"; |
1263 |
|
char xvid_user_data[100]; |
1264 |
if (frame->vop_flags & XVID_VOP_CARTOON) |
sprintf(xvid_user_data, |
1265 |
sprintf(xvid_id_string, "%sC", XVID_ID); |
xvid_user_format, |
1266 |
else |
XVID_BS_VERSION, |
1267 |
sprintf(xvid_id_string, "%s", XVID_ID); |
(frame->vop_flags & XVID_VOP_CARTOON)?'C':'\0'); |
1268 |
|
BitstreamWriteUserData(bs, xvid_user_data, strlen(xvid_user_data)); |
|
BitstreamWriteUserData(bs, xvid_id_string, strlen(xvid_id_string)); |
|
1269 |
} |
} |
1270 |
} |
} |
1271 |
|
|
1307 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1308 |
|
|
1309 |
/* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
/* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
1310 |
|
BitstreamPutBits(bs, frame->ticks, MAX(log2bin(pParam->fbase-1), 1)); |
|
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase-1)); |
|
1311 |
#if 0 |
#if 0 |
1312 |
DPRINTF("[%i:%i] %c", |
DPRINTF("[%i:%i] %c", |
1313 |
frame->seconds, frame->ticks, |
frame->seconds, frame->ticks, |
1337 |
BitstreamPutBits(bs, frame->rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
1338 |
|
|
1339 |
if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
1340 |
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_REDUCED)?1:0); |
BitstreamPutBit(bs, 0); |
1341 |
|
|
1342 |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
1343 |
|
|