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 1.53 2005-08-01 10:53:46 Isibaar Exp $ |
* $Id$ |
24 |
* |
* |
25 |
****************************************************************************/ |
****************************************************************************/ |
26 |
|
|
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 |
{ |
{ |
129 |
} |
} |
130 |
} |
} |
131 |
|
|
132 |
mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ |
mbnum = (mbnum_bits == 0) ? 0 : BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ |
|
DPRINTF(XVID_DEBUG_HEADER, "mbnum %i\n", mbnum); |
|
133 |
|
|
134 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
135 |
{ |
{ |
422 |
DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n"); |
DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n"); |
423 |
|
|
424 |
} else if (start_code == VISOBJ_START_CODE) { |
} else if (start_code == VISOBJ_START_CODE) { |
|
int visobj_ver_id; |
|
425 |
|
|
426 |
DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n"); |
DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n"); |
427 |
|
|
428 |
BitstreamSkip(bs, 32); /* visual_object_start_code */ |
BitstreamSkip(bs, 32); /* visual_object_start_code */ |
429 |
if (BitstreamGetBit(bs)) /* is_visual_object_identified */ |
if (BitstreamGetBit(bs)) /* is_visual_object_identified */ |
430 |
{ |
{ |
431 |
visobj_ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
dec->ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
432 |
DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", visobj_ver_id); |
DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", dec->ver_id); |
433 |
BitstreamSkip(bs, 3); /* visual_object_priority */ |
BitstreamSkip(bs, 3); /* visual_object_priority */ |
434 |
} else { |
} else { |
435 |
visobj_ver_id = 1; |
dec->ver_id = 1; |
436 |
} |
} |
437 |
|
|
438 |
if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
481 |
DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id); |
DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id); |
482 |
BitstreamSkip(bs, 3); /* video_object_layer_priority */ |
BitstreamSkip(bs, 3); /* video_object_layer_priority */ |
483 |
} else { |
} else { |
484 |
vol_ver_id = 1; |
vol_ver_id = dec->ver_id; |
485 |
} |
} |
486 |
|
|
487 |
dec->aspect_ratio = BitstreamGetBits(bs, 4); |
dec->aspect_ratio = BitstreamGetBits(bs, 4); |
819 |
dec->time = (dec->last_time_base + time_incr)*dec->time_inc_resolution + time_increment; |
dec->time = (dec->last_time_base + time_incr)*dec->time_inc_resolution + time_increment; |
820 |
dec->time_bp = dec->time_pp - (int32_t)(dec->last_non_b_time - dec->time); |
dec->time_bp = dec->time_pp - (int32_t)(dec->last_non_b_time - dec->time); |
821 |
} |
} |
822 |
|
if (dec->time_pp <= 0) dec->time_pp = 1; |
823 |
DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
824 |
DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); |
DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); |
825 |
|
|
1023 |
version, build, dec->packed_mode); |
version, build, dec->packed_mode); |
1024 |
} |
} |
1025 |
|
|
1026 |
|
if ((dec->bs_version == 0) && (build > 0) && |
1027 |
|
(build != 1393)) { /* non-xvid stream with xvid fourcc */ |
1028 |
|
dec->bs_version = 0xffff; |
1029 |
|
} |
1030 |
|
|
1031 |
} else /* start_code == ? */ |
} else /* start_code == ? */ |
1032 |
{ |
{ |
1033 |
if (BitstreamShowBits(bs, 24) == 0x000001) { |
if (BitstreamShowBits(bs, 24) == 0x000001) { |
1071 |
void |
void |
1072 |
BitstreamWriteVolHeader(Bitstream * const bs, |
BitstreamWriteVolHeader(Bitstream * const bs, |
1073 |
const MBParam * pParam, |
const MBParam * pParam, |
1074 |
const FRAMEINFO * const frame) |
const FRAMEINFO * const frame, |
1075 |
|
const int num_slices) |
1076 |
{ |
{ |
1077 |
static const unsigned int vo_id = 0; |
static const unsigned int vo_id = 0; |
1078 |
static const unsigned int vol_id = 0; |
static const unsigned int vol_id = 0; |
1081 |
int vol_profile = pParam->profile; |
int vol_profile = pParam->profile; |
1082 |
|
|
1083 |
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
1084 |
(pParam->vol_flags & XVID_VOL_GMC) || |
(pParam->vol_flags & XVID_VOL_GMC)) |
|
(pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
|
1085 |
vol_ver_id = 2; |
vol_ver_id = 2; |
1086 |
|
|
|
if ((pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) { |
|
|
vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE; |
|
|
} |
|
|
|
|
1087 |
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)) || |
1088 |
pParam->max_bframes>0) { |
pParam->max_bframes>0) { |
1089 |
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
1237 |
} |
} |
1238 |
|
|
1239 |
BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ |
BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ |
1240 |
BitstreamPutBit(bs, 1); /* resync_marker_disable */ |
|
1241 |
|
if (num_slices > 1) |
1242 |
|
BitstreamPutBit(bs, 0); /* resync_marker_enabled */ |
1243 |
|
else |
1244 |
|
BitstreamPutBit(bs, 1); /* resync_marker_disabled */ |
1245 |
|
|
1246 |
BitstreamPutBit(bs, 0); /* data_partitioned */ |
BitstreamPutBit(bs, 0); /* data_partitioned */ |
1247 |
|
|
1248 |
if (vol_ver_id != 1) { |
if (vol_ver_id != 1) { |
1249 |
BitstreamPutBit(bs, 0); /* newpred_enable */ |
BitstreamPutBit(bs, 0); /* newpred_enable */ |
1250 |
BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0); |
BitstreamPutBit(bs, 0); /* reduced_resolution_vop_enabled */ |
|
/* reduced_resolution_vop_enabled */ |
|
1251 |
} |
} |
1252 |
|
|
1253 |
BitstreamPutBit(bs, 0); /* scalability */ |
BitstreamPutBit(bs, 0); /* scalability */ |
1257 |
/* divx5 userdata string */ |
/* divx5 userdata string */ |
1258 |
#define DIVX5_ID ((char *)"DivX503b1393") |
#define DIVX5_ID ((char *)"DivX503b1393") |
1259 |
if ((pParam->global_flags & XVID_GLOBAL_DIVX5_USERDATA)) { |
if ((pParam->global_flags & XVID_GLOBAL_DIVX5_USERDATA)) { |
1260 |
BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
BitstreamWriteUserData(bs, DIVX5_ID, (uint32_t)strlen(DIVX5_ID)); |
1261 |
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) |
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) |
1262 |
BitstreamPutBits(bs, 'p', 8); |
BitstreamPutBits(bs, 'p', 8); |
1263 |
} |
} |
1270 |
xvid_user_format, |
xvid_user_format, |
1271 |
XVID_BS_VERSION, |
XVID_BS_VERSION, |
1272 |
(frame->vop_flags & XVID_VOP_CARTOON)?'C':'\0'); |
(frame->vop_flags & XVID_VOP_CARTOON)?'C':'\0'); |
1273 |
BitstreamWriteUserData(bs, xvid_user_data, strlen(xvid_user_data)); |
BitstreamWriteUserData(bs, xvid_user_data, (uint32_t)strlen(xvid_user_data)); |
1274 |
} |
} |
1275 |
} |
} |
1276 |
|
|
1341 |
if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
1342 |
BitstreamPutBits(bs, frame->rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
1343 |
|
|
|
if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
|
|
BitstreamPutBit(bs, 0); |
|
|
|
|
1344 |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
1345 |
|
|
1346 |
if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
1391 |
const char *data, |
const char *data, |
1392 |
const unsigned int length) |
const unsigned int length) |
1393 |
{ |
{ |
1394 |
int i; |
unsigned int i; |
1395 |
|
|
1396 |
BitstreamPad(bs); |
BitstreamPad(bs); |
1397 |
BitstreamPutBits(bs, USERDATA_START_CODE, 32); |
BitstreamPutBits(bs, USERDATA_START_CODE, 32); |
1451 |
|
|
1452 |
if (frame->coding_type == I_VOP) |
if (frame->coding_type == I_VOP) |
1453 |
nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER; /* 16 zeros followed by a 1. */ |
nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER; /* 16 zeros followed by a 1. */ |
1454 |
else if (frame->coding_type == P_VOP) |
else if (frame->coding_type == B_VOP) /* B_VOP */ |
1455 |
nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER-1 + frame->fcode; |
nbitsresyncmarker = MAX(NUMBITS_VP_RESYNC_MARKER+1, NUMBITS_VP_RESYNC_MARKER + MAX(frame->fcode, frame->bcode) - 1); |
1456 |
else /* B_VOP */ |
else /*(frame->coding_type == P_VOP)*/ |
1457 |
nbitsresyncmarker = MAX(NUMBITS_VP_RESYNC_MARKER, NUMBITS_VP_RESYNC_MARKER-1 + MAX(frame->fcode, frame->bcode)); |
nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER + frame->fcode - 1; |
1458 |
|
|
|
BitstreamPadAlways(bs); |
|
1459 |
BitstreamPutBits(bs, RESYNC_MARKER, nbitsresyncmarker); |
BitstreamPutBits(bs, RESYNC_MARKER, nbitsresyncmarker); |
1460 |
BitstreamPutBits(bs, mbnum, mbnum_bits); |
BitstreamPutBits(bs, mbnum, mbnum_bits); |
1461 |
BitstreamPutBits(bs, frame->quant, 5); |
BitstreamPutBits(bs, frame->quant, 5); |