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/****************************************************************************** |
/***************************************************************************** |
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* * |
* |
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* This file is part of XviD, a free MPEG-4 video encoder/decoder * |
* XVID MPEG-4 VIDEO CODEC |
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* * |
* - Bitstream reader/writer - |
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* XviD is an implementation of a part of one or more MPEG-4 Video tools * |
* |
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* as specified in ISO/IEC 14496-2 standard. Those intending to use this * |
* Copyright (C) 2001-2003 Peter Ross <pross@xvid.org> |
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* software module in hardware or software products are advised that its * |
* 2003 Cristoph Lampert <gruel@web.de> |
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* use may infringe existing patents or copyrights, and any such use * |
* |
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* would be at such party's own risk. The original developer of this * |
* This program is free software ; you can redistribute it and/or modify |
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* software module and his/her company, and subsequent editors and their * |
* it under the terms of the GNU General Public License as published by |
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* companies, will have no liability for use of this software or * |
* the Free Software Foundation ; either version 2 of the License, or |
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* modifications or derivatives thereof. * |
* (at your option) any later version. |
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* * |
* |
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* XviD is free software; you can redistribute it and/or modify it * |
* This program is distributed in the hope that it will be useful, |
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* under the terms of the GNU General Public License as published by * |
* but WITHOUT ANY WARRANTY ; without even the implied warranty of |
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* the Free Software Foundation; either version 2 of the License, or * |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* (at your option) any later version. * |
* GNU General Public License for more details. |
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* * |
* |
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* XviD is distributed in the hope that it will be useful, but * |
* You should have received a copy of the GNU General Public License |
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* WITHOUT ANY WARRANTY; without even the implied warranty of * |
* along with this program ; if not, write to the Free Software |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* GNU General Public License for more details. * |
* |
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* * |
* $Id$ |
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* You should have received a copy of the GNU General Public License * |
* |
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* along with this program; if not, write to the Free Software * |
****************************************************************************/ |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * |
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* * |
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******************************************************************************/ |
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/****************************************************************************** |
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* * |
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* bitstream.c * |
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* * |
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* Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> * |
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* * |
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* For more information visit the XviD homepage: http://www.xvid.org * |
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* * |
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******************************************************************************/ |
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/****************************************************************************** |
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* * |
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* Revision history: * |
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* * |
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* 05.01.2003 GMC support - gruel * |
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* 04.10.2002 qpel support - Isibaar * |
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* 11.07.2002 add VOP width & height return to dec when dec->width * |
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* or dec->height is 0 (for use in examples/ex1.c) * |
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* MinChen <chenm001@163.com> * |
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* 22.05.2002 bs_put_matrix fix * |
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* 20.05.2002 added BitstreamWriteUserData * |
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* 19.06.2002 Fix a little bug in use custom quant matrix * |
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* MinChen <chenm001@163.com> * |
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* 08.05.2002 add low_delay support for B_VOP decode * |
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* MinChen <chenm001@163.com> * |
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* 06.05.2002 low_delay * |
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* 06.05.2002 fixed fincr/fbase error * |
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* 01.05.2002 added BVOP support to BitstreamWriteVopHeader * |
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* 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> * |
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* 26.03.2002 interlacing support * |
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* 03.03.2002 qmatrix writing * |
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* 03.03.2002 merged BITREADER and BITWRITER * |
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* 30.02.2002 intra_dc_threshold support * |
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* 04.12.2001 support for additional headers * |
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* 16.12.2001 inital version * |
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* * |
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******************************************************************************/ |
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26 |
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27 |
#include <string.h> |
#include <string.h> |
28 |
#include <stdio.h> |
#include <stdio.h> |
36 |
static uint32_t __inline |
static uint32_t __inline |
37 |
log2bin(uint32_t value) |
log2bin(uint32_t value) |
38 |
{ |
{ |
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/* Changed by Chenm001 */ |
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#if !defined(_MSC_VER) |
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39 |
int n = 0; |
int n = 0; |
40 |
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41 |
while (value) { |
while (value) { |
43 |
n++; |
n++; |
44 |
} |
} |
45 |
return n; |
return n; |
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#else |
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__asm { |
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bsr eax, value |
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inc eax |
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} |
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#endif |
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46 |
} |
} |
47 |
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48 |
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662 |
DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat\n"); |
DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat\n"); |
663 |
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|
664 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
665 |
set_intra_matrix(matrix); |
set_intra_matrix(dec->mpeg_quant_matrices, matrix); |
666 |
} else |
} else |
667 |
set_intra_matrix(get_default_intra_matrix()); |
set_intra_matrix(dec->mpeg_quant_matrices, get_default_intra_matrix()); |
668 |
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669 |
if (BitstreamGetBit(bs)) /* load_inter_quant_mat */ |
if (BitstreamGetBit(bs)) /* load_inter_quant_mat */ |
670 |
{ |
{ |
673 |
DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat\n"); |
DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat\n"); |
674 |
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|
675 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
676 |
set_inter_matrix(matrix); |
set_inter_matrix(dec->mpeg_quant_matrices, matrix); |
677 |
} else |
} else |
678 |
set_inter_matrix(get_default_inter_matrix()); |
set_inter_matrix(dec->mpeg_quant_matrices, get_default_inter_matrix()); |
679 |
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680 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
681 |
DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported\n"); |
DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported\n"); |
1014 |
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1015 |
DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s\n", tmp); |
DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s\n", tmp); |
1016 |
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1017 |
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/* read xvid bitstream version */ |
1018 |
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if(strncmp(tmp, "XviD", 4) == 0) { |
1019 |
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if (tmp[strlen(tmp)-1] == 'C') { |
1020 |
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sscanf(tmp, "XviD%dC", &dec->bs_version); |
1021 |
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dec->cartoon_mode = 1; |
1022 |
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} |
1023 |
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else |
1024 |
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sscanf(tmp, "XviD%d", &dec->bs_version); |
1025 |
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1026 |
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DPRINTF(XVID_DEBUG_HEADER, "xvid bitstream version=%i", dec->bs_version); |
1027 |
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} |
1028 |
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1029 |
/* divx detection */ |
/* divx detection */ |
1030 |
i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed); |
i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed); |
1031 |
if (i < 2) |
if (i < 2) |
1059 |
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1060 |
static void |
static void |
1061 |
bs_put_matrix(Bitstream * bs, |
bs_put_matrix(Bitstream * bs, |
1062 |
const int16_t * matrix) |
const uint16_t * matrix) |
1063 |
{ |
{ |
1064 |
int i, j; |
int i, j; |
1065 |
const int last = matrix[scan_tables[0][63]]; |
const int last = matrix[scan_tables[0][63]]; |
1081 |
*/ |
*/ |
1082 |
void |
void |
1083 |
BitstreamWriteVolHeader(Bitstream * const bs, |
BitstreamWriteVolHeader(Bitstream * const bs, |
1084 |
const MBParam * pParam) |
const MBParam * pParam, |
1085 |
|
const FRAMEINFO * const frame) |
1086 |
{ |
{ |
1087 |
static const unsigned int vo_id = 0; |
static const unsigned int vo_id = 0; |
1088 |
static const unsigned int vol_id = 0; |
static const unsigned int vol_id = 0; |
1089 |
int vol_ver_id=1; |
int vol_ver_id=1; |
1090 |
int vol_type_ind=VIDOBJLAY_TYPE_SIMPLE; |
int vol_type_ind=VIDOBJLAY_TYPE_SIMPLE; |
1091 |
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int vol_profile = pParam->profile; |
1092 |
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1093 |
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
1094 |
(pParam->vol_flags & XVID_VOL_GMC) || |
(pParam->vol_flags & XVID_VOL_GMC) || |
1114 |
* byte aligned, and that always 1-8 padding bits have been written |
* byte aligned, and that always 1-8 padding bits have been written |
1115 |
*/ |
*/ |
1116 |
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1117 |
if (pParam->profile) { |
if (!vol_profile) { |
1118 |
BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32); |
/* Profile was not set by client app, use the more permissive profile |
1119 |
BitstreamPutBits(bs, pParam->profile, 8); |
* compatible with the vol_type_id */ |
1120 |
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switch(vol_type_ind) { |
1121 |
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case VIDOBJLAY_TYPE_ASP: |
1122 |
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vol_profile = 0xf5; /* ASP level 5 */ |
1123 |
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break; |
1124 |
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case VIDOBJLAY_TYPE_ART_SIMPLE: |
1125 |
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vol_profile = 0x94; /* ARTS level 4 */ |
1126 |
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break; |
1127 |
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default: |
1128 |
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vol_profile = 0x03; /* Simple level 3 */ |
1129 |
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break; |
1130 |
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} |
1131 |
} |
} |
1132 |
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1133 |
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/* Write the VOS header */ |
1134 |
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BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32); |
1135 |
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BitstreamPutBits(bs, vol_profile, 8); /* profile_and_level_indication */ |
1136 |
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1137 |
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1138 |
/* visual_object_start_code */ |
/* visual_object_start_code */ |
1139 |
BitstreamPad(bs); |
BitstreamPad(bs); |
1140 |
BitstreamPutBits(bs, VISOBJ_START_CODE, 32); |
BitstreamPutBits(bs, VISOBJ_START_CODE, 32); |
1141 |
BitstreamPutBits(bs, 0, 1); /* is_visual_object_identifier */ |
BitstreamPutBits(bs, 0, 1); /* is_visual_object_identifier */ |
1142 |
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1143 |
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/* Video type */ |
1144 |
BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); /* visual_object_type */ |
BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); /* visual_object_type */ |
1145 |
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BitstreamPutBit(bs, 0); /* video_signal_type */ |
1146 |
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1147 |
/* video object_start_code & vo_id */ |
/* video object_start_code & vo_id */ |
1148 |
BitstreamPad(bs); |
BitstreamPadAlways(bs); /* next_start_code() */ |
1149 |
BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32); |
BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32); |
1150 |
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1151 |
/* video_object_layer_start_code & vol_id */ |
/* video_object_layer_start_code & vol_id */ |
1155 |
BitstreamPutBit(bs, 0); /* random_accessible_vol */ |
BitstreamPutBit(bs, 0); /* random_accessible_vol */ |
1156 |
BitstreamPutBits(bs, vol_type_ind, 8); /* video_object_type_indication */ |
BitstreamPutBits(bs, vol_type_ind, 8); /* video_object_type_indication */ |
1157 |
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1158 |
if (vol_ver_id == 1) |
if (vol_ver_id == 1) { |
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{ |
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1159 |
BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */ |
BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */ |
1160 |
} |
} else { |
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else |
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{ |
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1161 |
BitstreamPutBit(bs, 1); /* is_object_layer_identified */ |
BitstreamPutBit(bs, 1); /* is_object_layer_identified */ |
1162 |
BitstreamPutBits(bs, vol_ver_id, 4); /* vol_ver_id == 2 */ |
BitstreamPutBits(bs, vol_ver_id, 4); /* vol_ver_id == 2 */ |
1163 |
BitstreamPutBits(bs, 4, 3); /* vol_ver_priority (1==lowest, 7==highest) ?? */ |
BitstreamPutBits(bs, 4, 3); /* vol_ver_priority (1==highest, 7==lowest) */ |
1164 |
} |
} |
1165 |
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1166 |
BitstreamPutBits(bs, 1, 4); /* aspect_ratio_info (1=1:1) */ |
/* Aspect ratio */ |
1167 |
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BitstreamPutBits(bs, pParam->par, 4); /* aspect_ratio_info (1=1:1) */ |
1168 |
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if(pParam->par == XVID_PAR_EXT) { |
1169 |
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BitstreamPutBits(bs, pParam->par_width, 8); |
1170 |
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BitstreamPutBits(bs, pParam->par_height, 8); |
1171 |
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} |
1172 |
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1173 |
BitstreamPutBit(bs, 1); /* vol_control_parameters */ |
BitstreamPutBit(bs, 1); /* vol_control_parameters */ |
1174 |
BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ |
BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ |
1197 |
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1198 |
if (pParam->fincr>0) { |
if (pParam->fincr>0) { |
1199 |
BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ |
BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ |
1200 |
BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); /* fixed_vop_time_increment */ |
BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase-1)); /* fixed_vop_time_increment */ |
1201 |
}else{ |
}else{ |
1202 |
BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */ |
BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */ |
1203 |
} |
} |
1214 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) |
1215 |
{ if ((pParam->vol_flags & XVID_VOL_GMC)) |
{ if ((pParam->vol_flags & XVID_VOL_GMC)) |
1216 |
{ BitstreamPutBits(bs, 2, 2); /* sprite_enable=='GMC' */ |
{ BitstreamPutBits(bs, 2, 2); /* sprite_enable=='GMC' */ |
1217 |
BitstreamPutBits(bs, 2, 6); /* no_of_sprite_warping_points */ |
BitstreamPutBits(bs, 3, 6); /* no_of_sprite_warping_points */ |
1218 |
BitstreamPutBits(bs, 3, 2); /* sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 */ |
BitstreamPutBits(bs, 3, 2); /* sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 */ |
1219 |
BitstreamPutBit(bs, 0); /* sprite_brightness_change (not supported) */ |
BitstreamPutBit(bs, 0); /* sprite_brightness_change (not supported) */ |
1220 |
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1235 |
BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT); |
BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT); |
1236 |
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1237 |
if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) { |
if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) { |
1238 |
BitstreamPutBit(bs, get_intra_matrix_status()); /* load_intra_quant_mat */ |
BitstreamPutBit(bs, is_custom_intra_matrix(pParam->mpeg_quant_matrices)); /* load_intra_quant_mat */ |
1239 |
if (get_intra_matrix_status()) { |
if(is_custom_intra_matrix(pParam->mpeg_quant_matrices)) |
1240 |
bs_put_matrix(bs, get_intra_matrix()); |
bs_put_matrix(bs, get_intra_matrix(pParam->mpeg_quant_matrices)); |
1241 |
} |
|
1242 |
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BitstreamPutBit(bs, is_custom_inter_matrix(pParam->mpeg_quant_matrices)); /* load_inter_quant_mat */ |
1243 |
BitstreamPutBit(bs, get_inter_matrix_status()); /* load_inter_quant_mat */ |
if(is_custom_inter_matrix(pParam->mpeg_quant_matrices)) |
1244 |
if (get_inter_matrix_status()) { |
bs_put_matrix(bs, get_inter_matrix(pParam->mpeg_quant_matrices)); |
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bs_put_matrix(bs, get_inter_matrix()); |
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} |
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1245 |
} |
} |
1246 |
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1247 |
if (vol_ver_id != 1) { |
if (vol_ver_id != 1) { |
1255 |
BitstreamPutBit(bs, 1); /* resync_marker_disable */ |
BitstreamPutBit(bs, 1); /* resync_marker_disable */ |
1256 |
BitstreamPutBit(bs, 0); /* data_partitioned */ |
BitstreamPutBit(bs, 0); /* data_partitioned */ |
1257 |
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|
1258 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
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{ |
|
1259 |
BitstreamPutBit(bs, 0); /* newpred_enable */ |
BitstreamPutBit(bs, 0); /* newpred_enable */ |
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|
1260 |
BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0); |
BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0); |
1261 |
/* reduced_resolution_vop_enabled */ |
/* reduced_resolution_vop_enabled */ |
1262 |
} |
} |
1263 |
|
|
1264 |
BitstreamPutBit(bs, 0); /* scalability */ |
BitstreamPutBit(bs, 0); /* scalability */ |
1265 |
|
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1266 |
|
BitstreamPadAlways(bs); /* next_start_code(); */ |
1267 |
|
|
1268 |
/* fake divx5 id, to ensure compatibility with divx5 decoder */ |
/* fake divx5 id, to ensure compatibility with divx5 decoder */ |
1269 |
#define DIVX5_ID "DivX000b000p" |
#define DIVX5_ID "DivX999b000p" |
1270 |
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) { |
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) { |
1271 |
BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
1272 |
} |
} |
1273 |
|
|
1274 |
/* xvid id */ |
/* xvid id */ |
1275 |
#define XVID_ID "XviD" XVID_BS_VERSION |
#define XVID_ID "XviD" XVID_BS_VERSION |
1276 |
BitstreamWriteUserData(bs, XVID_ID, strlen(XVID_ID)); |
{ |
1277 |
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char xvid_id_string[100]; |
1278 |
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1279 |
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if (frame->vop_flags & XVID_VOP_CARTOON) |
1280 |
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sprintf(xvid_id_string, "%sC", XVID_ID); |
1281 |
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else |
1282 |
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sprintf(xvid_id_string, "%s", XVID_ID); |
1283 |
|
|
1284 |
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BitstreamWriteUserData(bs, xvid_id_string, strlen(xvid_id_string)); |
1285 |
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} |
1286 |
} |
} |
1287 |
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1288 |
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1294 |
Bitstream * const bs, |
Bitstream * const bs, |
1295 |
const MBParam * pParam, |
const MBParam * pParam, |
1296 |
const FRAMEINFO * const frame, |
const FRAMEINFO * const frame, |
1297 |
int vop_coded) |
int vop_coded, |
1298 |
|
unsigned int quant) |
1299 |
{ |
{ |
1300 |
uint32_t i; |
uint32_t i; |
1301 |
|
|
1324 |
|
|
1325 |
/* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
/* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
1326 |
|
|
1327 |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase-1)); |
1328 |
#if 0 |
#if 0 |
1329 |
DPRINTF("[%i:%i] %c", |
DPRINTF("[%i:%i] %c", |
1330 |
frame->seconds, frame->ticks, |
frame->seconds, frame->ticks, |
1337 |
|
|
1338 |
if (!vop_coded) { |
if (!vop_coded) { |
1339 |
BitstreamPutBits(bs, 0, 1); |
BitstreamPutBits(bs, 0, 1); |
1340 |
|
#if 0 |
1341 |
|
BitstreamPadAlways(bs); /* next_start_code() */ |
1342 |
|
#endif |
1343 |
|
/* NB: It's up to the function caller to write the next_start_code(). |
1344 |
|
* At the moment encoder.c respects that requisite because a VOP |
1345 |
|
* always ends with a next_start_code either if it's coded or not |
1346 |
|
* and encoder.c terminates a frame with a next_start_code in whatever |
1347 |
|
* case */ |
1348 |
return; |
return; |
1349 |
} |
} |
1350 |
|
|
1366 |
if (frame->coding_type == S_VOP) { |
if (frame->coding_type == S_VOP) { |
1367 |
if (1) { /* no_of_sprite_warping_points>=1 (we use 2!) */ |
if (1) { /* no_of_sprite_warping_points>=1 (we use 2!) */ |
1368 |
int k; |
int k; |
1369 |
for (k=0;k<2;k++) |
for (k=0;k<3;k++) |
1370 |
{ |
{ |
1371 |
bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); /* du[k] */ |
bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); /* du[k] */ |
1372 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1388 |
|
|
1389 |
|
|
1390 |
#if 0 |
#if 0 |
1391 |
DPRINTF(XVID_DEBUG_HEADER, "quant = %i\n", frame->quant); |
DPRINTF(XVID_DEBUG_HEADER, "quant = %i\n", quant); |
1392 |
#endif |
#endif |
1393 |
|
|
1394 |
BitstreamPutBits(bs, frame->quant, 5); /* quantizer */ |
BitstreamPutBits(bs, quant, 5); /* quantizer */ |
1395 |
|
|
1396 |
if (frame->coding_type != I_VOP) |
if (frame->coding_type != I_VOP) |
1397 |
BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ |
BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ |