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| 1 : | Isibaar | 3 | /****************************************************************************** |
| 2 : | * * | ||
| 3 : | * This file is part of XviD, a free MPEG-4 video encoder/decoder * | ||
| 4 : | * * | ||
| 5 : | * XviD is an implementation of a part of one or more MPEG-4 Video tools * | ||
| 6 : | * as specified in ISO/IEC 14496-2 standard. Those intending to use this * | ||
| 7 : | * software module in hardware or software products are advised that its * | ||
| 8 : | * use may infringe existing patents or copyrights, and any such use * | ||
| 9 : | * would be at such party's own risk. The original developer of this * | ||
| 10 : | * software module and his/her company, and subsequent editors and their * | ||
| 11 : | * companies, will have no liability for use of this software or * | ||
| 12 : | * modifications or derivatives thereof. * | ||
| 13 : | * * | ||
| 14 : | * XviD is free software; you can redistribute it and/or modify it * | ||
| 15 : | * under the terms of the GNU General Public License as published by * | ||
| 16 : | * the Free Software Foundation; either version 2 of the License, or * | ||
| 17 : | * (at your option) any later version. * | ||
| 18 : | * * | ||
| 19 : | * XviD is distributed in the hope that it will be useful, but * | ||
| 20 : | * WITHOUT ANY WARRANTY; without even the implied warranty of * | ||
| 21 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | ||
| 22 : | * GNU General Public License for more details. * | ||
| 23 : | * * | ||
| 24 : | * You should have received a copy of the GNU General Public License * | ||
| 25 : | * along with this program; if not, write to the Free Software * | ||
| 26 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * | ||
| 27 : | * * | ||
| 28 : | ******************************************************************************/ | ||
| 29 : | |||
| 30 : | /****************************************************************************** | ||
| 31 : | * * | ||
| 32 : | * bitstream.c * | ||
| 33 : | * * | ||
| 34 : | * Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> * | ||
| 35 : | * * | ||
| 36 : | * For more information visit the XviD homepage: http://www.xvid.org * | ||
| 37 : | * * | ||
| 38 : | ******************************************************************************/ | ||
| 39 : | |||
| 40 : | /****************************************************************************** | ||
| 41 : | chenm001 | 223 | * * |
| 42 : | Isibaar | 3 | * Revision history: * |
| 43 : | chenm001 | 223 | * * |
| 44 : | chl | 619 | * 28.10.2002 GMC support - gruel * |
| 45 : | Isibaar | 579 | * 04.10.2002 qpel support - Isibaar * |
| 46 : | chenm001 | 294 | * 11.07.2002 add VOP width & height return to dec when dec->width * |
| 47 : | * or dec->height is 0 (for use in examples/ex1.c) * | ||
| 48 : | * MinChen <chenm001@163.com> * | ||
| 49 : | * 22.05.2002 bs_put_matrix fix * | ||
| 50 : | suxen_drol | 229 | * 20.05.2002 added BitstreamWriteUserData * |
| 51 : | Isibaar | 579 | * 19.06.2002 Fix a little bug in use custom quant matrix * |
| 52 : | * MinChen <chenm001@163.com> * | ||
| 53 : | * 08.05.2002 add low_delay support for B_VOP decode * | ||
| 54 : | * MinChen <chenm001@163.com> * | ||
| 55 : | suxen_drol | 164 | * 06.05.2002 low_delay * |
| 56 : | suxen_drol | 163 | * 06.05.2002 fixed fincr/fbase error * |
| 57 : | * 01.05.2002 added BVOP support to BitstreamWriteVopHeader * | ||
| 58 : | chenm001 | 124 | * 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> * |
| 59 : | chenm001 | 223 | * 26.03.2002 interlacing support * |
| 60 : | * 03.03.2002 qmatrix writing * | ||
| 61 : | * 03.03.2002 merged BITREADER and BITWRITER * | ||
| 62 : | Isibaar | 579 | * 30.02.2002 intra_dc_threshold support * |
| 63 : | * 04.12.2001 support for additional headers * | ||
| 64 : | * 16.12.2001 inital version * | ||
| 65 : | * * | ||
| 66 : | Isibaar | 3 | ******************************************************************************/ |
| 67 : | |||
| 68 : | |||
| 69 : | #include "bitstream.h" | ||
| 70 : | #include "zigzag.h" | ||
| 71 : | Isibaar | 4 | #include "../quant/quant_matrix.h" |
| 72 : | chl | 619 | #include "mbcoding.h" |
| 73 : | Isibaar | 3 | |
| 74 : | chenm001 | 124 | |
| 75 : | edgomez | 195 | static uint32_t __inline |
| 76 : | log2bin(uint32_t value) | ||
| 77 : | Isibaar | 3 | { |
| 78 : | chenm001 | 124 | /* Changed by Chenm001 */ |
| 79 : | #ifndef WIN32 | ||
| 80 : | Isibaar | 3 | int n = 0; |
| 81 : | edgomez | 195 | |
| 82 : | while (value) { | ||
| 83 : | Isibaar | 3 | value >>= 1; |
| 84 : | n++; | ||
| 85 : | } | ||
| 86 : | return n; | ||
| 87 : | chenm001 | 124 | #else |
| 88 : | edgomez | 195 | __asm { |
| 89 : | suxen_drol | 206 | bsr eax, value |
| 90 : | inc eax | ||
| 91 : | } | ||
| 92 : | chenm001 | 124 | #endif |
| 93 : | Isibaar | 3 | } |
| 94 : | |||
| 95 : | |||
| 96 : | edgomez | 195 | static const uint32_t intra_dc_threshold_table[] = { |
| 97 : | 32, /* never use */ | ||
| 98 : | Isibaar | 3 | 13, |
| 99 : | 15, | ||
| 100 : | 17, | ||
| 101 : | 19, | ||
| 102 : | 21, | ||
| 103 : | 23, | ||
| 104 : | 1, | ||
| 105 : | }; | ||
| 106 : | |||
| 107 : | |||
| 108 : | edgomez | 195 | void |
| 109 : | bs_get_matrix(Bitstream * bs, | ||
| 110 : | uint8_t * matrix) | ||
| 111 : | { | ||
| 112 : | int i = 0; | ||
| 113 : | int last, value = 0; | ||
| 114 : | Isibaar | 4 | |
| 115 : | edgomez | 195 | do { |
| 116 : | last = value; | ||
| 117 : | value = BitstreamGetBits(bs, 8); | ||
| 118 : | matrix[scan_tables[0][i++]] = value; | ||
| 119 : | } | ||
| 120 : | while (value != 0 && i < 64); | ||
| 121 : | chenm001 | 223 | i--; // fix little bug at coeff not full |
| 122 : | edgomez | 195 | |
| 123 : | while (i < 64) { | ||
| 124 : | matrix[scan_tables[0][i++]] = last; | ||
| 125 : | } | ||
| 126 : | } | ||
| 127 : | |||
| 128 : | suxen_drol | 248 | |
| 129 : | |||
| 130 : | // for PVOP addbits == fcode - 1 | ||
| 131 : | // for BVOP addbits == max(fcode,bcode) - 1 | ||
| 132 : | // returns mbpos | ||
| 133 : | int | ||
| 134 : | suxen_drol | 631 | read_video_packet_header(Bitstream *bs, |
| 135 : | DECODER * dec, | ||
| 136 : | const int addbits, | ||
| 137 : | int * quant, | ||
| 138 : | int * fcode_forward, | ||
| 139 : | int * fcode_backward, | ||
| 140 : | int * intra_dc_threshold) | ||
| 141 : | suxen_drol | 248 | { |
| 142 : | suxen_drol | 631 | int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits; |
| 143 : | int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1); | ||
| 144 : | suxen_drol | 248 | int mbnum; |
| 145 : | suxen_drol | 631 | int hec = 0; |
| 146 : | suxen_drol | 248 | |
| 147 : | BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); | ||
| 148 : | suxen_drol | 631 | BitstreamSkip(bs, startcode_bits); |
| 149 : | suxen_drol | 248 | |
| 150 : | suxen_drol | 252 | DPRINTF(DPRINTF_STARTCODE, "<video_packet_header>"); |
| 151 : | |||
| 152 : | suxen_drol | 631 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
| 153 : | { | ||
| 154 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
| 155 : | if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */)) | ||
| 156 : | { | ||
| 157 : | BitstreamSkip(bs, 13); /* vop_width */ | ||
| 158 : | READ_MARKER(); | ||
| 159 : | BitstreamSkip(bs, 13); /* vop_height */ | ||
| 160 : | READ_MARKER(); | ||
| 161 : | BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */ | ||
| 162 : | READ_MARKER(); | ||
| 163 : | BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */ | ||
| 164 : | READ_MARKER(); | ||
| 165 : | } | ||
| 166 : | } | ||
| 167 : | suxen_drol | 248 | |
| 168 : | suxen_drol | 631 | mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ |
| 169 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "mbnum %i", mbnum); |
| 170 : | suxen_drol | 248 | |
| 171 : | suxen_drol | 631 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
| 172 : | { | ||
| 173 : | *quant = BitstreamGetBits(bs, 5); /* quant_scale */ | ||
| 174 : | DPRINTF(DPRINTF_HEADER, "quant %i", *quant); | ||
| 175 : | } | ||
| 176 : | suxen_drol | 248 | |
| 177 : | suxen_drol | 631 | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
| 178 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
| 179 : | |||
| 180 : | |||
| 181 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "header_extension_code %i", hec); |
| 182 : | suxen_drol | 631 | if (hec) |
| 183 : | { | ||
| 184 : | int time_base; | ||
| 185 : | int time_increment; | ||
| 186 : | int coding_type; | ||
| 187 : | suxen_drol | 248 | |
| 188 : | suxen_drol | 631 | for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */ |
| 189 : | READ_MARKER(); | ||
| 190 : | if (dec->time_inc_bits) | ||
| 191 : | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ | ||
| 192 : | READ_MARKER(); | ||
| 193 : | DPRINTF(DPRINTF_HEADER,"time %i:%i", time_base, time_increment); | ||
| 194 : | |||
| 195 : | coding_type = BitstreamGetBits(bs, 2); | ||
| 196 : | DPRINTF(DPRINTF_HEADER,"coding_type %i", coding_type); | ||
| 197 : | |||
| 198 : | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) | ||
| 199 : | { | ||
| 200 : | BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ | ||
| 201 : | if (coding_type != I_VOP) | ||
| 202 : | BitstreamSkip(bs, 1); /* vop_shape_coding_type */ | ||
| 203 : | } | ||
| 204 : | |||
| 205 : | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) | ||
| 206 : | { | ||
| 207 : | *intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
| 208 : | |||
| 209 : | if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP && | ||
| 210 : | dec->sprite_warping_points > 0) | ||
| 211 : | { | ||
| 212 : | // TODO: sprite trajectory | ||
| 213 : | } | ||
| 214 : | if (dec->reduced_resolution_enable && | ||
| 215 : | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && | ||
| 216 : | (coding_type == P_VOP || coding_type == I_VOP)) | ||
| 217 : | { | ||
| 218 : | BitstreamSkip(bs, 1); /* vop_reduced_resolution */ | ||
| 219 : | } | ||
| 220 : | |||
| 221 : | if (coding_type != I_VOP && fcode_forward) | ||
| 222 : | { | ||
| 223 : | *fcode_forward = BitstreamGetBits(bs, 3); | ||
| 224 : | DPRINTF(DPRINTF_HEADER,"fcode_forward %i", *fcode_forward); | ||
| 225 : | } | ||
| 226 : | |||
| 227 : | if (coding_type == B_VOP && fcode_backward) | ||
| 228 : | { | ||
| 229 : | *fcode_backward = BitstreamGetBits(bs, 3); | ||
| 230 : | DPRINTF(DPRINTF_HEADER,"fcode_backward %i", fcode_backward); | ||
| 231 : | } | ||
| 232 : | } | ||
| 233 : | |||
| 234 : | } | ||
| 235 : | |||
| 236 : | if (dec->newpred_enable) | ||
| 237 : | { | ||
| 238 : | int vop_id; | ||
| 239 : | int vop_id_for_prediction; | ||
| 240 : | |||
| 241 : | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
| 242 : | DPRINTF(DPRINTF_HEADER, "vop_id %i", vop_id); | ||
| 243 : | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ | ||
| 244 : | { | ||
| 245 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
| 246 : | DPRINTF(DPRINTF_HEADER, "vop_id_for_prediction %i", vop_id_for_prediction); | ||
| 247 : | } | ||
| 248 : | READ_MARKER(); | ||
| 249 : | } | ||
| 250 : | |||
| 251 : | suxen_drol | 248 | return mbnum; |
| 252 : | } | ||
| 253 : | |||
| 254 : | |||
| 255 : | |||
| 256 : | Isibaar | 3 | /* |
| 257 : | decode headers | ||
| 258 : | returns coding_type, or -1 if error | ||
| 259 : | */ | ||
| 260 : | |||
| 261 : | suxen_drol | 252 | #define VIDOBJ_START_CODE_MASK 0x0000001f |
| 262 : | #define VIDOBJLAY_START_CODE_MASK 0x0000000f | ||
| 263 : | |||
| 264 : | edgomez | 195 | int |
| 265 : | BitstreamReadHeaders(Bitstream * bs, | ||
| 266 : | DECODER * dec, | ||
| 267 : | uint32_t * rounding, | ||
| 268 : | suxen_drol | 631 | uint32_t * reduced_resolution, |
| 269 : | edgomez | 195 | uint32_t * quant, |
| 270 : | uint32_t * fcode_forward, | ||
| 271 : | uint32_t * fcode_backward, | ||
| 272 : | suxen_drol | 631 | uint32_t * intra_dc_threshold, |
| 273 : | VECTOR * gmc_mv) | ||
| 274 : | Isibaar | 3 | { |
| 275 : | uint32_t vol_ver_id; | ||
| 276 : | uint32_t coding_type; | ||
| 277 : | uint32_t start_code; | ||
| 278 : | edgomez | 195 | uint32_t time_incr = 0; |
| 279 : | int32_t time_increment; | ||
| 280 : | suxen_drol | 631 | int resize = 0; |
| 281 : | chenm001 | 156 | |
| 282 : | edgomez | 195 | do { |
| 283 : | suxen_drol | 631 | |
| 284 : | Isibaar | 3 | BitstreamByteAlign(bs); |
| 285 : | start_code = BitstreamShowBits(bs, 32); | ||
| 286 : | |||
| 287 : | edgomez | 195 | if (start_code == VISOBJSEQ_START_CODE) { |
| 288 : | suxen_drol | 252 | |
| 289 : | int profile; | ||
| 290 : | |||
| 291 : | DPRINTF(DPRINTF_STARTCODE, "<visual_object_sequence>"); | ||
| 292 : | |||
| 293 : | edgomez | 195 | BitstreamSkip(bs, 32); // visual_object_sequence_start_code |
| 294 : | suxen_drol | 252 | profile = BitstreamGetBits(bs, 8); // profile_and_level_indication |
| 295 : | |||
| 296 : | DPRINTF(DPRINTF_HEADER, "profile_and_level_indication %i", profile); | ||
| 297 : | |||
| 298 : | edgomez | 195 | } else if (start_code == VISOBJSEQ_STOP_CODE) { |
| 299 : | suxen_drol | 252 | |
| 300 : | edgomez | 195 | BitstreamSkip(bs, 32); // visual_object_sequence_stop_code |
| 301 : | suxen_drol | 252 | |
| 302 : | DPRINTF(DPRINTF_STARTCODE, "</visual_object_sequence>"); | ||
| 303 : | |||
| 304 : | edgomez | 195 | } else if (start_code == VISOBJ_START_CODE) { |
| 305 : | suxen_drol | 252 | |
| 306 : | DPRINTF(DPRINTF_STARTCODE, "<visual_object>"); | ||
| 307 : | |||
| 308 : | edgomez | 195 | BitstreamSkip(bs, 32); // visual_object_start_code |
| 309 : | if (BitstreamGetBit(bs)) // is_visual_object_identified | ||
| 310 : | Isibaar | 3 | { |
| 311 : | edgomez | 195 | vol_ver_id = BitstreamGetBits(bs, 4); // visual_object_ver_id |
| 312 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); |
| 313 : | edgomez | 195 | BitstreamSkip(bs, 3); // visual_object_priority |
| 314 : | } else { | ||
| 315 : | Isibaar | 3 | vol_ver_id = 1; |
| 316 : | } | ||
| 317 : | |||
| 318 : | if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) // visual_object_type | ||
| 319 : | { | ||
| 320 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "visual_object_type != video"); |
| 321 : | Isibaar | 3 | return -1; |
| 322 : | } | ||
| 323 : | BitstreamSkip(bs, 4); | ||
| 324 : | |||
| 325 : | // video_signal_type | ||
| 326 : | |||
| 327 : | edgomez | 195 | if (BitstreamGetBit(bs)) // video_signal_type |
| 328 : | Isibaar | 3 | { |
| 329 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER,"+ video_signal_type"); |
| 330 : | edgomez | 195 | BitstreamSkip(bs, 3); // video_format |
| 331 : | BitstreamSkip(bs, 1); // video_range | ||
| 332 : | if (BitstreamGetBit(bs)) // color_description | ||
| 333 : | Isibaar | 3 | { |
| 334 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER,"+ color_description"); |
| 335 : | edgomez | 195 | BitstreamSkip(bs, 8); // color_primaries |
| 336 : | BitstreamSkip(bs, 8); // transfer_characteristics | ||
| 337 : | BitstreamSkip(bs, 8); // matrix_coefficients | ||
| 338 : | Isibaar | 3 | } |
| 339 : | } | ||
| 340 : | suxen_drol | 252 | } else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
| 341 : | |||
| 342 : | DPRINTF(DPRINTF_STARTCODE, "<video_object>"); | ||
| 343 : | DPRINTF(DPRINTF_HEADER, "vo id %i", start_code & VIDOBJ_START_CODE_MASK); | ||
| 344 : | |||
| 345 : | edgomez | 195 | BitstreamSkip(bs, 32); // video_object_start_code |
| 346 : | suxen_drol | 252 | |
| 347 : | } else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { | ||
| 348 : | |||
| 349 : | DPRINTF(DPRINTF_STARTCODE, "<video_object_layer>"); | ||
| 350 : | DPRINTF(DPRINTF_HEADER, "vol id %i", start_code & VIDOBJLAY_START_CODE_MASK); | ||
| 351 : | |||
| 352 : | edgomez | 195 | BitstreamSkip(bs, 32); // video_object_layer_start_code |
| 353 : | Isibaar | 3 | |
| 354 : | edgomez | 195 | BitstreamSkip(bs, 1); // random_accessible_vol |
| 355 : | Isibaar | 3 | |
| 356 : | // video_object_type_indication | ||
| 357 : | suxen_drol | 631 | if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && |
| 358 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && | ||
| 359 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && | ||
| 360 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_ACE && | ||
| 361 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_ART_SIMPLE && | ||
| 362 : | BitstreamShowBits(bs, 8) != 0) // BUGGY DIVX | ||
| 363 : | Isibaar | 3 | { |
| 364 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR,"video_object_type_indication %i not supported ", |
| 365 : | BitstreamShowBits(bs, 8)); | ||
| 366 : | Isibaar | 3 | return -1; |
| 367 : | } | ||
| 368 : | BitstreamSkip(bs, 8); | ||
| 369 : | |||
| 370 : | |||
| 371 : | edgomez | 195 | if (BitstreamGetBit(bs)) // is_object_layer_identifier |
| 372 : | Isibaar | 3 | { |
| 373 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "+ is_object_layer_identifier"); |
| 374 : | edgomez | 195 | vol_ver_id = BitstreamGetBits(bs, 4); // video_object_layer_verid |
| 375 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); |
| 376 : | edgomez | 195 | BitstreamSkip(bs, 3); // video_object_layer_priority |
| 377 : | } else { | ||
| 378 : | Isibaar | 3 | vol_ver_id = 1; |
| 379 : | } | ||
| 380 : | |||
| 381 : | suxen_drol | 631 | dec->aspect_ratio = BitstreamGetBits(bs, 4); |
| 382 : | |||
| 383 : | if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) // aspect_ratio_info | ||
| 384 : | Isibaar | 3 | { |
| 385 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "+ aspect_ratio_info"); |
| 386 : | suxen_drol | 631 | dec->par_width = BitstreamGetBits(bs, 8); // par_width |
| 387 : | dec->par_height = BitstreamGetBits(bs, 8); // par_height | ||
| 388 : | Isibaar | 3 | } |
| 389 : | |||
| 390 : | edgomez | 195 | if (BitstreamGetBit(bs)) // vol_control_parameters |
| 391 : | Isibaar | 3 | { |
| 392 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "+ vol_control_parameters"); |
| 393 : | edgomez | 195 | BitstreamSkip(bs, 2); // chroma_format |
| 394 : | dec->low_delay = BitstreamGetBit(bs); // low_delay | ||
| 395 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "low_delay %i", dec->low_delay); |
| 396 : | edgomez | 195 | if (BitstreamGetBit(bs)) // vbv_parameters |
| 397 : | Isibaar | 3 | { |
| 398 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER,"+ vbv_parameters"); |
| 399 : | edgomez | 195 | BitstreamSkip(bs, 15); // first_half_bitrate |
| 400 : | Isibaar | 3 | READ_MARKER(); |
| 401 : | edgomez | 195 | BitstreamSkip(bs, 15); // latter_half_bitrate |
| 402 : | Isibaar | 3 | READ_MARKER(); |
| 403 : | edgomez | 195 | BitstreamSkip(bs, 15); // first_half_vbv_buffer_size |
| 404 : | Isibaar | 3 | READ_MARKER(); |
| 405 : | edgomez | 195 | BitstreamSkip(bs, 3); // latter_half_vbv_buffer_size |
| 406 : | BitstreamSkip(bs, 11); // first_half_vbv_occupancy | ||
| 407 : | Isibaar | 3 | READ_MARKER(); |
| 408 : | edgomez | 195 | BitstreamSkip(bs, 15); // latter_half_vbv_occupancy |
| 409 : | Isibaar | 3 | READ_MARKER(); |
| 410 : | } | ||
| 411 : | } | ||
| 412 : | |||
| 413 : | dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape | ||
| 414 : | suxen_drol | 631 | |
| 415 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "shape %i", dec->shape); |
| 416 : | suxen_drol | 631 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
| 417 : | { | ||
| 418 : | DPRINTF(DPRINTF_ERROR,"non-rectangular shapes are not supported"); | ||
| 419 : | } | ||
| 420 : | edgomez | 195 | |
| 421 : | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { | ||
| 422 : | BitstreamSkip(bs, 4); // video_object_layer_shape_extension | ||
| 423 : | Isibaar | 3 | } |
| 424 : | |||
| 425 : | READ_MARKER(); | ||
| 426 : | |||
| 427 : | chenm001 | 156 | // *************************** for decode B-frame time *********************** |
| 428 : | suxen_drol | 631 | dec->time_inc_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution |
| 429 : | DPRINTF(DPRINTF_HEADER,"vop_time_increment_resolution %i", dec->time_inc_resolution); | ||
| 430 : | suxen_drol | 252 | |
| 431 : | suxen_drol | 631 | // dec->time_inc_resolution--; |
| 432 : | suxen_drol | 252 | |
| 433 : | suxen_drol | 631 | if (dec->time_inc_resolution > 0) { |
| 434 : | dec->time_inc_bits = log2bin(dec->time_inc_resolution-1); | ||
| 435 : | edgomez | 195 | } else { |
| 436 : | Isibaar | 3 | // dec->time_inc_bits = 0; |
| 437 : | // for "old" xvid compatibility, set time_inc_bits = 1 | ||
| 438 : | dec->time_inc_bits = 1; | ||
| 439 : | } | ||
| 440 : | |||
| 441 : | READ_MARKER(); | ||
| 442 : | |||
| 443 : | edgomez | 195 | if (BitstreamGetBit(bs)) // fixed_vop_rate |
| 444 : | Isibaar | 3 | { |
| 445 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "+ fixed_vop_rate"); |
| 446 : | Isibaar | 3 | BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment |
| 447 : | } | ||
| 448 : | |||
| 449 : | edgomez | 195 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
| 450 : | Isibaar | 3 | |
| 451 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { |
| 452 : | Isibaar | 3 | uint32_t width, height; |
| 453 : | |||
| 454 : | READ_MARKER(); | ||
| 455 : | edgomez | 195 | width = BitstreamGetBits(bs, 13); // video_object_layer_width |
| 456 : | Isibaar | 3 | READ_MARKER(); |
| 457 : | edgomez | 195 | height = BitstreamGetBits(bs, 13); // video_object_layer_height |
| 458 : | Isibaar | 3 | READ_MARKER(); |
| 459 : | |||
| 460 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "width %i", width); |
| 461 : | DPRINTF(DPRINTF_HEADER, "height %i", height); | ||
| 462 : | |||
| 463 : | suxen_drol | 631 | if (dec->width != width || dec->height != height) |
| 464 : | { | ||
| 465 : | if (dec->fixed_dimensions) | ||
| 466 : | { | ||
| 467 : | DPRINTF(DPRINTF_ERROR, "XVID_DEC_PARAM width/height does not match bitstream"); | ||
| 468 : | return -1; | ||
| 469 : | } | ||
| 470 : | resize = 1; | ||
| 471 : | chenm001 | 294 | dec->width = width; |
| 472 : | dec->height = height; | ||
| 473 : | Isibaar | 3 | } |
| 474 : | } | ||
| 475 : | h | 69 | |
| 476 : | suxen_drol | 252 | dec->interlacing = BitstreamGetBit(bs); |
| 477 : | suxen_drol | 631 | DPRINTF(DPRINTF_HEADER, "interlacing %i", dec->interlacing); |
| 478 : | Isibaar | 3 | |
| 479 : | edgomez | 195 | if (!BitstreamGetBit(bs)) // obmc_disable |
| 480 : | Isibaar | 3 | { |
| 481 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "obmc_disabled==false not supported"); |
| 482 : | Isibaar | 3 | // TODO |
| 483 : | // fucking divx4.02 has this enabled | ||
| 484 : | } | ||
| 485 : | |||
| 486 : | suxen_drol | 631 | dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); // sprite_enable |
| 487 : | |||
| 488 : | if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC) | ||
| 489 : | Isibaar | 3 | { |
| 490 : | suxen_drol | 631 | int low_latency_sprite_enable; |
| 491 : | |||
| 492 : | if (dec->sprite_enable != SPRITE_GMC) | ||
| 493 : | { | ||
| 494 : | int sprite_width; | ||
| 495 : | int sprite_height; | ||
| 496 : | int sprite_left_coord; | ||
| 497 : | int sprite_top_coord; | ||
| 498 : | sprite_width = BitstreamGetBits(bs, 13); // sprite_width | ||
| 499 : | READ_MARKER(); | ||
| 500 : | sprite_height = BitstreamGetBits(bs, 13); // sprite_height | ||
| 501 : | READ_MARKER(); | ||
| 502 : | sprite_left_coord = BitstreamGetBits(bs, 13); // sprite_left_coordinate | ||
| 503 : | READ_MARKER(); | ||
| 504 : | sprite_top_coord = BitstreamGetBits(bs, 13); // sprite_top_coordinate | ||
| 505 : | READ_MARKER(); | ||
| 506 : | } | ||
| 507 : | dec->sprite_warping_points = BitstreamGetBits(bs, 6); // no_of_sprite_warping_points | ||
| 508 : | dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); // sprite_warping_accuracy | ||
| 509 : | dec->sprite_brightness_change = BitstreamGetBits(bs, 1); // brightness_change | ||
| 510 : | if (dec->sprite_enable != SPRITE_GMC) | ||
| 511 : | { | ||
| 512 : | low_latency_sprite_enable = BitstreamGetBits(bs, 1); // low_latency_sprite_enable | ||
| 513 : | } | ||
| 514 : | Isibaar | 3 | } |
| 515 : | edgomez | 195 | |
| 516 : | if (vol_ver_id != 1 && | ||
| 517 : | dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { | ||
| 518 : | BitstreamSkip(bs, 1); // sadct_disable | ||
| 519 : | Isibaar | 3 | } |
| 520 : | |||
| 521 : | edgomez | 195 | if (BitstreamGetBit(bs)) // not_8_bit |
| 522 : | Isibaar | 3 | { |
| 523 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "not_8_bit==true (ignored)"); |
| 524 : | Isibaar | 3 | dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision |
| 525 : | edgomez | 195 | BitstreamSkip(bs, 4); // bits_per_pixel |
| 526 : | } else { | ||
| 527 : | Isibaar | 3 | dec->quant_bits = 5; |
| 528 : | } | ||
| 529 : | |||
| 530 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
| 531 : | BitstreamSkip(bs, 1); // no_gray_quant_update | ||
| 532 : | BitstreamSkip(bs, 1); // composition_method | ||
| 533 : | BitstreamSkip(bs, 1); // linear_composition | ||
| 534 : | Isibaar | 3 | } |
| 535 : | |||
| 536 : | edgomez | 195 | dec->quant_type = BitstreamGetBit(bs); // quant_type |
| 537 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "quant_type %i", dec->quant_type); |
| 538 : | Isibaar | 3 | |
| 539 : | edgomez | 195 | if (dec->quant_type) { |
| 540 : | if (BitstreamGetBit(bs)) // load_intra_quant_mat | ||
| 541 : | Isibaar | 3 | { |
| 542 : | Isibaar | 20 | uint8_t matrix[64]; |
| 543 : | edgomez | 195 | |
| 544 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "load_intra_quant_mat"); |
| 545 : | |||
| 546 : | Isibaar | 4 | bs_get_matrix(bs, matrix); |
| 547 : | set_intra_matrix(matrix); | ||
| 548 : | edgomez | 195 | } else |
| 549 : | Isibaar | 20 | set_intra_matrix(get_default_intra_matrix()); |
| 550 : | Isibaar | 4 | |
| 551 : | edgomez | 195 | if (BitstreamGetBit(bs)) // load_inter_quant_mat |
| 552 : | Isibaar | 3 | { |
| 553 : | edgomez | 195 | uint8_t matrix[64]; |
| 554 : | suxen_drol | 252 | |
| 555 : | DPRINTF(DPRINTF_HEADER, "load_inter_quant_mat"); | ||
| 556 : | edgomez | 195 | |
| 557 : | Isibaar | 4 | bs_get_matrix(bs, matrix); |
| 558 : | set_inter_matrix(matrix); | ||
| 559 : | edgomez | 195 | } else |
| 560 : | Isibaar | 20 | set_inter_matrix(get_default_inter_matrix()); |
| 561 : | Isibaar | 3 | |
| 562 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
| 563 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "greyscale matrix not supported"); |
| 564 : | Isibaar | 3 | return -1; |
| 565 : | } | ||
| 566 : | Isibaar | 4 | |
| 567 : | Isibaar | 3 | } |
| 568 : | |||
| 569 : | edgomez | 195 | |
| 570 : | if (vol_ver_id != 1) { | ||
| 571 : | Isibaar | 333 | dec->quarterpel = BitstreamGetBit(bs); // quarter_sample |
| 572 : | suxen_drol | 631 | DPRINTF(DPRINTF_HEADER,"quarterpel %i", dec->quarterpel); |
| 573 : | Isibaar | 3 | } |
| 574 : | Isibaar | 333 | else |
| 575 : | dec->quarterpel = 0; | ||
| 576 : | |||
| 577 : | Isibaar | 3 | |
| 578 : | edgomez | 195 | if (!BitstreamGetBit(bs)) // complexity_estimation_disable |
| 579 : | Isibaar | 3 | { |
| 580 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "complexity_estimation not supported"); |
| 581 : | Isibaar | 3 | return -1; |
| 582 : | } | ||
| 583 : | |||
| 584 : | suxen_drol | 252 | BitstreamSkip(bs, 1); // resync_marker_disable |
| 585 : | Isibaar | 3 | |
| 586 : | edgomez | 195 | if (BitstreamGetBit(bs)) // data_partitioned |
| 587 : | Isibaar | 3 | { |
| 588 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "data_partitioned not supported"); |
| 589 : | edgomez | 195 | BitstreamSkip(bs, 1); // reversible_vlc |
| 590 : | Isibaar | 3 | } |
| 591 : | |||
| 592 : | edgomez | 195 | if (vol_ver_id != 1) { |
| 593 : | suxen_drol | 631 | dec->newpred_enable = BitstreamGetBit(bs); |
| 594 : | if (dec->newpred_enable) // newpred_enable | ||
| 595 : | Isibaar | 3 | { |
| 596 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "+ newpred_enable"); |
| 597 : | edgomez | 195 | BitstreamSkip(bs, 2); // requested_upstream_message_type |
| 598 : | BitstreamSkip(bs, 1); // newpred_segment_type | ||
| 599 : | Isibaar | 3 | } |
| 600 : | suxen_drol | 631 | dec->reduced_resolution_enable = BitstreamGetBit(bs); |
| 601 : | if (dec->reduced_resolution_enable) // reduced_resolution_vop_enable | ||
| 602 : | Isibaar | 3 | { |
| 603 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "reduced_resolution_vop not supported"); |
| 604 : | suxen_drol | 631 | //return -1; |
| 605 : | Isibaar | 3 | } |
| 606 : | } | ||
| 607 : | suxen_drol | 631 | else |
| 608 : | { | ||
| 609 : | dec->newpred_enable = 0; | ||
| 610 : | dec->reduced_resolution_enable = 0; | ||
| 611 : | } | ||
| 612 : | edgomez | 195 | |
| 613 : | if ((dec->scalability = BitstreamGetBit(bs))) // scalability | ||
| 614 : | Isibaar | 3 | { |
| 615 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "scalability not supported"); |
| 616 : | Isibaar | 3 | return -1; |
| 617 : | } | ||
| 618 : | edgomez | 195 | } else // dec->shape == BINARY_ONLY |
| 619 : | Isibaar | 3 | { |
| 620 : | edgomez | 195 | if (vol_ver_id != 1) { |
| 621 : | Isibaar | 3 | if (BitstreamGetBit(bs)) // scalability |
| 622 : | { | ||
| 623 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "scalability not supported"); |
| 624 : | Isibaar | 3 | return -1; |
| 625 : | } | ||
| 626 : | } | ||
| 627 : | edgomez | 195 | BitstreamSkip(bs, 1); // resync_marker_disable |
| 628 : | Isibaar | 3 | |
| 629 : | } | ||
| 630 : | |||
| 631 : | suxen_drol | 631 | return (resize ? -3 : -2 ); /* VOL */ |
| 632 : | |||
| 633 : | edgomez | 195 | } else if (start_code == GRPOFVOP_START_CODE) { |
| 634 : | suxen_drol | 252 | |
| 635 : | DPRINTF(DPRINTF_STARTCODE, "<group_of_vop>"); | ||
| 636 : | |||
| 637 : | Isibaar | 3 | BitstreamSkip(bs, 32); |
| 638 : | { | ||
| 639 : | int hours, minutes, seconds; | ||
| 640 : | edgomez | 195 | |
| 641 : | Isibaar | 3 | hours = BitstreamGetBits(bs, 5); |
| 642 : | minutes = BitstreamGetBits(bs, 6); | ||
| 643 : | READ_MARKER(); | ||
| 644 : | seconds = BitstreamGetBits(bs, 6); | ||
| 645 : | suxen_drol | 252 | |
| 646 : | DPRINTF(DPRINTF_HEADER, "time %ih%im%is", hours); | ||
| 647 : | Isibaar | 3 | } |
| 648 : | edgomez | 195 | BitstreamSkip(bs, 1); // closed_gov |
| 649 : | BitstreamSkip(bs, 1); // broken_link | ||
| 650 : | suxen_drol | 252 | |
| 651 : | edgomez | 195 | } else if (start_code == VOP_START_CODE) { |
| 652 : | suxen_drol | 252 | |
| 653 : | DPRINTF(DPRINTF_STARTCODE, "<vop>"); | ||
| 654 : | |||
| 655 : | edgomez | 195 | BitstreamSkip(bs, 32); // vop_start_code |
| 656 : | Isibaar | 3 | |
| 657 : | edgomez | 195 | coding_type = BitstreamGetBits(bs, 2); // vop_coding_type |
| 658 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "coding_type %i", coding_type); |
| 659 : | Isibaar | 3 | |
| 660 : | chenm001 | 156 | // *************************** for decode B-frame time *********************** |
| 661 : | edgomez | 195 | while (BitstreamGetBit(bs) != 0) // time_base |
| 662 : | chenm001 | 156 | time_incr++; |
| 663 : | edgomez | 195 | |
| 664 : | Isibaar | 3 | READ_MARKER(); |
| 665 : | edgomez | 195 | |
| 666 : | if (dec->time_inc_bits) { | ||
| 667 : | chenm001 | 156 | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); // vop_time_increment |
| 668 : | Isibaar | 3 | } |
| 669 : | suxen_drol | 240 | |
| 670 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "time_base %i", time_incr); |
| 671 : | DPRINTF(DPRINTF_HEADER, "time_increment %i", time_increment); | ||
| 672 : | |||
| 673 : | DPRINTF(DPRINTF_TIMECODE, "%c %i:%i", | ||
| 674 : | suxen_drol | 631 | coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S', |
| 675 : | suxen_drol | 240 | time_incr, time_increment); |
| 676 : | |||
| 677 : | edgomez | 195 | if (coding_type != B_VOP) { |
| 678 : | dec->last_time_base = dec->time_base; | ||
| 679 : | chenm001 | 156 | dec->time_base += time_incr; |
| 680 : | chl | 316 | dec->time = time_increment; |
| 681 : | |||
| 682 : | suxen_drol | 631 | /* dec->time_base * dec->time_inc_resolution + |
| 683 : | edgomez | 195 | time_increment; |
| 684 : | chl | 316 | */ dec->time_pp = (uint32_t) |
| 685 : | suxen_drol | 631 | (dec->time_inc_resolution + dec->time - dec->last_non_b_time)%dec->time_inc_resolution; |
| 686 : | edgomez | 195 | dec->last_non_b_time = dec->time; |
| 687 : | } else { | ||
| 688 : | chl | 316 | dec->time = time_increment; |
| 689 : | /* | ||
| 690 : | edgomez | 195 | (dec->last_time_base + |
| 691 : | suxen_drol | 631 | time_incr) * dec->time_inc_resolution + time_increment; |
| 692 : | chl | 316 | */ |
| 693 : | chl | 313 | dec->time_bp = (uint32_t) |
| 694 : | suxen_drol | 631 | (dec->time_inc_resolution + dec->last_non_b_time - dec->time)%dec->time_inc_resolution; |
| 695 : | chenm001 | 156 | } |
| 696 : | Isibaar | 3 | |
| 697 : | READ_MARKER(); | ||
| 698 : | |||
| 699 : | edgomez | 195 | if (!BitstreamGetBit(bs)) // vop_coded |
| 700 : | Isibaar | 3 | { |
| 701 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "vop_coded==false"); |
| 702 : | Isibaar | 3 | return N_VOP; |
| 703 : | } | ||
| 704 : | |||
| 705 : | suxen_drol | 631 | if (dec->newpred_enable) |
| 706 : | { | ||
| 707 : | int vop_id; | ||
| 708 : | int vop_id_for_prediction; | ||
| 709 : | |||
| 710 : | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
| 711 : | DPRINTF(DPRINTF_HEADER, "vop_id %i", vop_id); | ||
| 712 : | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ | ||
| 713 : | { | ||
| 714 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
| 715 : | DPRINTF(DPRINTF_HEADER, "vop_id_for_prediction %i", vop_id_for_prediction); | ||
| 716 : | } | ||
| 717 : | READ_MARKER(); | ||
| 718 : | } | ||
| 719 : | Isibaar | 3 | |
| 720 : | suxen_drol | 631 | |
| 721 : | |||
| 722 : | chenm001 | 156 | // fix a little bug by MinChen <chenm002@163.com> |
| 723 : | edgomez | 195 | if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
| 724 : | suxen_drol | 631 | ( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) { |
| 725 : | Isibaar | 3 | *rounding = BitstreamGetBit(bs); // rounding_type |
| 726 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "rounding %i", *rounding); |
| 727 : | Isibaar | 3 | } |
| 728 : | |||
| 729 : | suxen_drol | 631 | if (dec->reduced_resolution_enable && |
| 730 : | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && | ||
| 731 : | (coding_type == P_VOP || coding_type == I_VOP)) { | ||
| 732 : | Isibaar | 3 | |
| 733 : | suxen_drol | 631 | *reduced_resolution = BitstreamGetBit(bs); |
| 734 : | } | ||
| 735 : | else | ||
| 736 : | { | ||
| 737 : | *reduced_resolution = 0; | ||
| 738 : | } | ||
| 739 : | |||
| 740 : | edgomez | 195 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
| 741 : | suxen_drol | 631 | if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) { |
| 742 : | edgomez | 195 | |
| 743 : | suxen_drol | 631 | uint32_t width, height; |
| 744 : | uint32_t horiz_mc_ref, vert_mc_ref; | ||
| 745 : | Isibaar | 3 | |
| 746 : | suxen_drol | 631 | width = BitstreamGetBits(bs, 13); |
| 747 : | READ_MARKER(); | ||
| 748 : | height = BitstreamGetBits(bs, 13); | ||
| 749 : | READ_MARKER(); | ||
| 750 : | horiz_mc_ref = BitstreamGetBits(bs, 13); | ||
| 751 : | READ_MARKER(); | ||
| 752 : | vert_mc_ref = BitstreamGetBits(bs, 13); | ||
| 753 : | READ_MARKER(); | ||
| 754 : | Isibaar | 3 | |
| 755 : | suxen_drol | 631 | DPRINTF(DPRINTF_HEADER, "width %i", width); |
| 756 : | DPRINTF(DPRINTF_HEADER, "height %i", height); | ||
| 757 : | DPRINTF(DPRINTF_HEADER, "horiz_mc_ref %i", horiz_mc_ref); | ||
| 758 : | DPRINTF(DPRINTF_HEADER, "vert_mc_ref %i", vert_mc_ref); | ||
| 759 : | } | ||
| 760 : | |||
| 761 : | edgomez | 195 | BitstreamSkip(bs, 1); // change_conv_ratio_disable |
| 762 : | if (BitstreamGetBit(bs)) // vop_constant_alpha | ||
| 763 : | Isibaar | 3 | { |
| 764 : | edgomez | 195 | BitstreamSkip(bs, 8); // vop_constant_alpha_value |
| 765 : | Isibaar | 3 | } |
| 766 : | } | ||
| 767 : | |||
| 768 : | edgomez | 195 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
| 769 : | Isibaar | 3 | // intra_dc_vlc_threshold |
| 770 : | edgomez | 195 | *intra_dc_threshold = |
| 771 : | intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
| 772 : | Isibaar | 3 | |
| 773 : | h | 543 | dec->top_field_first = 0; |
| 774 : | dec->alternate_vertical_scan = 0; | ||
| 775 : | |||
| 776 : | edgomez | 195 | if (dec->interlacing) { |
| 777 : | suxen_drol | 252 | dec->top_field_first = BitstreamGetBit(bs); |
| 778 : | DPRINTF(DPRINTF_HEADER, "interlace top_field_first %i", dec->top_field_first); | ||
| 779 : | dec->alternate_vertical_scan = BitstreamGetBit(bs); | ||
| 780 : | DPRINTF(DPRINTF_HEADER, "interlace alternate_vertical_scan %i", dec->alternate_vertical_scan); | ||
| 781 : | |||
| 782 : | h | 69 | } |
| 783 : | Isibaar | 3 | } |
| 784 : | edgomez | 195 | |
| 785 : | suxen_drol | 631 | if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) { |
| 786 : | |||
| 787 : | int i; | ||
| 788 : | |||
| 789 : | for (i = 0 ; i < dec->sprite_warping_points; i++) | ||
| 790 : | { | ||
| 791 : | int length; | ||
| 792 : | int x = 0, y = 0; | ||
| 793 : | |||
| 794 : | /* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */ | ||
| 795 : | length = bs_get_spritetrajectory(bs); | ||
| 796 : | if(length){ | ||
| 797 : | x= BitstreamGetBits(bs, length); | ||
| 798 : | if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
| 799 : | x = - (x ^ ((1 << length) - 1)); | ||
| 800 : | } | ||
| 801 : | READ_MARKER(); | ||
| 802 : | |||
| 803 : | length = bs_get_spritetrajectory(bs); | ||
| 804 : | if(length){ | ||
| 805 : | y = BitstreamGetBits(bs, length); | ||
| 806 : | if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
| 807 : | y = - (y ^ ((1 << length) - 1)); | ||
| 808 : | } | ||
| 809 : | READ_MARKER(); | ||
| 810 : | |||
| 811 : | gmc_mv[i].x = x; | ||
| 812 : | gmc_mv[i].y = y; | ||
| 813 : | |||
| 814 : | DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i)", i, x, y); | ||
| 815 : | } | ||
| 816 : | |||
| 817 : | if (dec->sprite_brightness_change) | ||
| 818 : | { | ||
| 819 : | // XXX: brightness_change_factor() | ||
| 820 : | } | ||
| 821 : | if (dec->sprite_enable == SPRITE_STATIC) | ||
| 822 : | { | ||
| 823 : | // XXX: todo | ||
| 824 : | } | ||
| 825 : | |||
| 826 : | } | ||
| 827 : | |||
| 828 : | edgomez | 195 | if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) // vop_quant |
| 829 : | Isibaar | 157 | *quant = 1; |
| 830 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "quant %i", *quant); |
| 831 : | edgomez | 195 | |
| 832 : | if (coding_type != I_VOP) { | ||
| 833 : | *fcode_forward = BitstreamGetBits(bs, 3); // fcode_forward | ||
| 834 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "fcode_forward %i", *fcode_forward); |
| 835 : | Isibaar | 3 | } |
| 836 : | edgomez | 195 | |
| 837 : | if (coding_type == B_VOP) { | ||
| 838 : | *fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward | ||
| 839 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "fcode_backward %i", *fcode_backward); |
| 840 : | Isibaar | 3 | } |
| 841 : | edgomez | 195 | if (!dec->scalability) { |
| 842 : | if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && | ||
| 843 : | (coding_type != I_VOP)) { | ||
| 844 : | BitstreamSkip(bs, 1); // vop_shape_coding_type | ||
| 845 : | chenm001 | 156 | } |
| 846 : | } | ||
| 847 : | Isibaar | 3 | return coding_type; |
| 848 : | suxen_drol | 252 | |
| 849 : | edgomez | 195 | } else if (start_code == USERDATA_START_CODE) { |
| 850 : | suxen_drol | 252 | |
| 851 : | DPRINTF(DPRINTF_STARTCODE, "<user_data>"); | ||
| 852 : | |||
| 853 : | edgomez | 195 | BitstreamSkip(bs, 32); // user_data_start_code |
| 854 : | suxen_drol | 252 | |
| 855 : | edgomez | 195 | } else // start_code == ? |
| 856 : | Isibaar | 3 | { |
| 857 : | edgomez | 195 | if (BitstreamShowBits(bs, 24) == 0x000001) { |
| 858 : | suxen_drol | 252 | DPRINTF(DPRINTF_STARTCODE, "<unknown: %x>", BitstreamShowBits(bs, 32)); |
| 859 : | Isibaar | 3 | } |
| 860 : | BitstreamSkip(bs, 8); | ||
| 861 : | } | ||
| 862 : | } | ||
| 863 : | while ((BitstreamPos(bs) >> 3) < bs->length); | ||
| 864 : | |||
| 865 : | suxen_drol | 233 | //DPRINTF("*** WARNING: no vop_start_code found"); |
| 866 : | edgomez | 195 | return -1; /* ignore it */ |
| 867 : | Isibaar | 3 | } |
| 868 : | |||
| 869 : | |||
| 870 : | /* write custom quant matrix */ | ||
| 871 : | |||
| 872 : | edgomez | 195 | static void |
| 873 : | bs_put_matrix(Bitstream * bs, | ||
| 874 : | const int16_t * matrix) | ||
| 875 : | Isibaar | 3 | { |
| 876 : | int i, j; | ||
| 877 : | const int last = matrix[scan_tables[0][63]]; | ||
| 878 : | |||
| 879 : | suxen_drol | 233 | for (j = 63; j > 0 && matrix[scan_tables[0][j - 1]] == last; j--); |
| 880 : | Isibaar | 3 | |
| 881 : | edgomez | 195 | for (i = 0; i <= j; i++) { |
| 882 : | Isibaar | 3 | BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
| 883 : | } | ||
| 884 : | |||
| 885 : | edgomez | 195 | if (j < 63) { |
| 886 : | Isibaar | 3 | BitstreamPutBits(bs, 0, 8); |
| 887 : | } | ||
| 888 : | } | ||
| 889 : | |||
| 890 : | |||
| 891 : | /* | ||
| 892 : | write vol header | ||
| 893 : | */ | ||
| 894 : | edgomez | 195 | void |
| 895 : | BitstreamWriteVolHeader(Bitstream * const bs, | ||
| 896 : | const MBParam * pParam, | ||
| 897 : | chl | 619 | const FRAMEINFO * const frame) |
| 898 : | Isibaar | 3 | { |
| 899 : | chl | 619 | int vol_ver_id=1; |
| 900 : | |||
| 901 : | if ( (pParam->m_quarterpel) || (frame->global_flags & XVID_GMC) ) | ||
| 902 : | vol_ver_id = 2; | ||
| 903 : | |||
| 904 : | Isibaar | 3 | // video object_start_code & vo_id |
| 905 : | edgomez | 195 | BitstreamPad(bs); |
| 906 : | Isibaar | 3 | BitstreamPutBits(bs, VO_START_CODE, 27); |
| 907 : | edgomez | 195 | BitstreamPutBits(bs, 0, 5); |
| 908 : | Isibaar | 3 | |
| 909 : | // video_object_layer_start_code & vol_id | ||
| 910 : | BitstreamPutBits(bs, VOL_START_CODE, 28); | ||
| 911 : | BitstreamPutBits(bs, 0, 4); | ||
| 912 : | |||
| 913 : | edgomez | 195 | BitstreamPutBit(bs, 0); // random_accessible_vol |
| 914 : | BitstreamPutBits(bs, 0, 8); // video_object_type_indication | ||
| 915 : | Isibaar | 579 | |
| 916 : | chl | 619 | if (vol_ver_id == 1) |
| 917 : | Isibaar | 579 | { |
| 918 : | BitstreamPutBit(bs, 0); // is_object_layer_identified (0=not given) | ||
| 919 : | } | ||
| 920 : | else | ||
| 921 : | { | ||
| 922 : | BitstreamPutBit(bs, 1); // is_object_layer_identified | ||
| 923 : | chl | 619 | BitstreamPutBits(bs, vol_ver_id, 4); // vol_ver_id == 2 |
| 924 : | BitstreamPutBits(bs, 4, 3); // vol_ver_priority (1==lowest, 7==highest) ?? | ||
| 925 : | Isibaar | 579 | } |
| 926 : | |||
| 927 : | edgomez | 195 | BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1) |
| 928 : | suxen_drol | 164 | |
| 929 : | chl | 387 | BitstreamPutBit(bs, 1); // vol_control_parameters |
| 930 : | BitstreamPutBits(bs, 1, 2); // chroma_format 1="4:2:0" | ||
| 931 : | |||
| 932 : | edgomez | 195 | if (pParam->max_bframes > 0) { |
| 933 : | BitstreamPutBit(bs, 0); // low_delay | ||
| 934 : | } else | ||
| 935 : | suxen_drol | 164 | { |
| 936 : | chl | 386 | BitstreamPutBit(bs, 1); // low_delay |
| 937 : | suxen_drol | 164 | } |
| 938 : | chl | 387 | BitstreamPutBit(bs, 0); // vbv_parameters (0=not given) |
| 939 : | suxen_drol | 164 | |
| 940 : | edgomez | 195 | BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) |
| 941 : | Isibaar | 3 | |
| 942 : | WRITE_MARKER(); | ||
| 943 : | edgomez | 195 | |
| 944 : | suxen_drol | 631 | /* time_inc_resolution; ignored by current decore versions |
| 945 : | edgomez | 195 | eg. 2fps res=2 inc=1 |
| 946 : | 25fps res=25 inc=1 | ||
| 947 : | 29.97fps res=30000 inc=1001 | ||
| 948 : | */ | ||
| 949 : | suxen_drol | 163 | BitstreamPutBits(bs, pParam->fbase, 16); |
| 950 : | Isibaar | 3 | |
| 951 : | WRITE_MARKER(); | ||
| 952 : | |||
| 953 : | suxen_drol | 241 | BitstreamPutBit(bs, 1); // fixed_vop_rate = 1 |
| 954 : | BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); // fixed_vop_time_increment | ||
| 955 : | Isibaar | 3 | |
| 956 : | WRITE_MARKER(); | ||
| 957 : | edgomez | 195 | BitstreamPutBits(bs, pParam->width, 13); // width |
| 958 : | Isibaar | 3 | WRITE_MARKER(); |
| 959 : | edgomez | 195 | BitstreamPutBits(bs, pParam->height, 13); // height |
| 960 : | Isibaar | 3 | WRITE_MARKER(); |
| 961 : | edgomez | 195 | |
| 962 : | BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); // interlace | ||
| 963 : | Isibaar | 3 | BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) |
| 964 : | Isibaar | 579 | |
| 965 : | chl | 619 | if (vol_ver_id != 1) |
| 966 : | { if (frame->global_flags & XVID_GMC) | ||
| 967 : | { BitstreamPutBits(bs, 2, 2); // sprite_enable=='GMC' | ||
| 968 : | BitstreamPutBits(bs, 2, 6); // no_of_sprite_warping_points | ||
| 969 : | BitstreamPutBits(bs, 3, 2); // sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 | ||
| 970 : | BitstreamPutBit(bs, 0); // sprite_brightness_change (not supported) | ||
| 971 : | |||
| 972 : | /* currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3 | ||
| 973 : | for DivX5 compatability */ | ||
| 974 : | |||
| 975 : | } else | ||
| 976 : | BitstreamPutBits(bs, 0, 2); // sprite_enable==off | ||
| 977 : | Isibaar | 579 | } |
| 978 : | else | ||
| 979 : | chl | 619 | BitstreamPutBit(bs, 0); // sprite_enable==off |
| 980 : | Isibaar | 579 | |
| 981 : | chl | 619 | BitstreamPutBit(bs, 0); // not_8_bit |
| 982 : | Isibaar | 3 | |
| 983 : | // quant_type 0=h.263 1=mpeg4(quantizer tables) | ||
| 984 : | suxen_drol | 136 | BitstreamPutBit(bs, pParam->m_quant_type); |
| 985 : | edgomez | 195 | |
| 986 : | if (pParam->m_quant_type) { | ||
| 987 : | Isibaar | 4 | BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
| 988 : | edgomez | 195 | if (get_intra_matrix_status()) { |
| 989 : | Isibaar | 4 | bs_put_matrix(bs, get_intra_matrix()); |
| 990 : | Isibaar | 3 | } |
| 991 : | |||
| 992 : | edgomez | 195 | BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat |
| 993 : | if (get_inter_matrix_status()) { | ||
| 994 : | Isibaar | 4 | bs_put_matrix(bs, get_inter_matrix()); |
| 995 : | Isibaar | 3 | } |
| 996 : | |||
| 997 : | } | ||
| 998 : | |||
| 999 : | chl | 619 | if (vol_ver_id != 1) { |
| 1000 : | if (pParam->m_quarterpel) | ||
| 1001 : | BitstreamPutBit(bs, 1); // quarterpel | ||
| 1002 : | else | ||
| 1003 : | BitstreamPutBit(bs, 0); // no quarterpel | ||
| 1004 : | Isibaar | 579 | } |
| 1005 : | |||
| 1006 : | Isibaar | 3 | BitstreamPutBit(bs, 1); // complexity_estimation_disable |
| 1007 : | BitstreamPutBit(bs, 1); // resync_marker_disable | ||
| 1008 : | BitstreamPutBit(bs, 0); // data_partitioned | ||
| 1009 : | Isibaar | 579 | |
| 1010 : | chl | 619 | if (vol_ver_id != 1) |
| 1011 : | Isibaar | 579 | { |
| 1012 : | BitstreamPutBit(bs, 0); // newpred_enable | ||
| 1013 : | BitstreamPutBit(bs, 0); // reduced_resolution_vop_enabled | ||
| 1014 : | } | ||
| 1015 : | chl | 619 | |
| 1016 : | BitstreamPutBit(bs, 0); // scalability | ||
| 1017 : | Isibaar | 579 | |
| 1018 : | Isibaar | 3 | } |
| 1019 : | |||
| 1020 : | |||
| 1021 : | /* | ||
| 1022 : | write vop header | ||
| 1023 : | */ | ||
| 1024 : | edgomez | 195 | void |
| 1025 : | BitstreamWriteVopHeader(Bitstream * const bs, | ||
| 1026 : | const MBParam * pParam, | ||
| 1027 : | chl | 619 | const FRAMEINFO * const frame, |
| 1028 : | suxen_drol | 229 | int vop_coded) |
| 1029 : | Isibaar | 3 | { |
| 1030 : | suxen_drol | 152 | uint32_t i; |
| 1031 : | chl | 387 | |
| 1032 : | edgomez | 195 | BitstreamPad(bs); |
| 1033 : | BitstreamPutBits(bs, VOP_START_CODE, 32); | ||
| 1034 : | Isibaar | 3 | |
| 1035 : | edgomez | 195 | BitstreamPutBits(bs, frame->coding_type, 2); |
| 1036 : | suxen_drol | 631 | DPRINTF(DPRINTF_HEADER, "coding_type = %i", frame->coding_type); |
| 1037 : | edgomez | 195 | |
| 1038 : | for (i = 0; i < frame->seconds; i++) { | ||
| 1039 : | suxen_drol | 152 | BitstreamPutBit(bs, 1); |
| 1040 : | } | ||
| 1041 : | BitstreamPutBit(bs, 0); | ||
| 1042 : | Isibaar | 3 | |
| 1043 : | WRITE_MARKER(); | ||
| 1044 : | |||
| 1045 : | // time_increment: value=nth_of_sec, nbits = log2(resolution) | ||
| 1046 : | chl | 619 | |
| 1047 : | edgomez | 195 | BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
| 1048 : | suxen_drol | 631 | /*DPRINTF("[%i:%i] %c", frame->seconds, frame->ticks, |
| 1049 : | edgomez | 195 | frame->coding_type == I_VOP ? 'I' : frame->coding_type == |
| 1050 : | suxen_drol | 252 | P_VOP ? 'P' : 'B');*/ |
| 1051 : | Isibaar | 3 | |
| 1052 : | WRITE_MARKER(); | ||
| 1053 : | |||
| 1054 : | suxen_drol | 229 | if (!vop_coded) { |
| 1055 : | BitstreamPutBits(bs, 0, 1); | ||
| 1056 : | return; | ||
| 1057 : | } | ||
| 1058 : | |||
| 1059 : | edgomez | 195 | BitstreamPutBits(bs, 1, 1); // vop_coded |
| 1060 : | Isibaar | 3 | |
| 1061 : | chl | 619 | if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
| 1062 : | suxen_drol | 136 | BitstreamPutBits(bs, frame->rounding_type, 1); |
| 1063 : | Isibaar | 3 | |
| 1064 : | edgomez | 195 | BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
| 1065 : | |||
| 1066 : | if (frame->global_flags & XVID_INTERLACING) { | ||
| 1067 : | h | 543 | BitstreamPutBit(bs, (frame->global_flags & XVID_TOPFIELDFIRST)); |
| 1068 : | BitstreamPutBit(bs, (frame->global_flags & XVID_ALTERNATESCAN)); | ||
| 1069 : | h | 69 | } |
| 1070 : | chl | 619 | |
| 1071 : | if (frame->coding_type == S_VOP) { | ||
| 1072 : | if (1) { // no_of_sprite_warping_points>=1 | ||
| 1073 : | if (pParam->m_quarterpel) | ||
| 1074 : | bs_put_spritetrajectory(bs, frame->GMC_MV.x/2 ); // du[0] | ||
| 1075 : | else | ||
| 1076 : | bs_put_spritetrajectory(bs, frame->GMC_MV.x ); // du[0] | ||
| 1077 : | WRITE_MARKER(); | ||
| 1078 : | |||
| 1079 : | if (pParam->m_quarterpel) | ||
| 1080 : | bs_put_spritetrajectory(bs, frame->GMC_MV.y/2 ); // dv[0] | ||
| 1081 : | else | ||
| 1082 : | bs_put_spritetrajectory(bs, frame->GMC_MV.y ); // dv[0] | ||
| 1083 : | WRITE_MARKER(); | ||
| 1084 : | suxen_drol | 631 | |
| 1085 : | |||
| 1086 : | if (pParam->m_quarterpel) | ||
| 1087 : | { | ||
| 1088 : | DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i) *QPEL*", 0, frame->GMC_MV.x/2, frame->GMC_MV.y/2); | ||
| 1089 : | } | ||
| 1090 : | else | ||
| 1091 : | { | ||
| 1092 : | DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i)", 0, frame->GMC_MV.x, frame->GMC_MV.y); | ||
| 1093 : | } | ||
| 1094 : | |||
| 1095 : | chl | 619 | } |
| 1096 : | /* GMC is halfpel in bitstream, even though GMC_MV was pseudo-qpel (2*halfpel) */ | ||
| 1097 : | h | 69 | |
| 1098 : | chl | 619 | if (2) { // no_of_sprite_warping_points>=2 (for DivX5 compat) |
| 1099 : | bs_put_spritetrajectory(bs, 0 ); | ||
| 1100 : | WRITE_MARKER(); | ||
| 1101 : | bs_put_spritetrajectory(bs, 0 ); | ||
| 1102 : | WRITE_MARKER(); | ||
| 1103 : | } | ||
| 1104 : | // no support for brightness_change! | ||
| 1105 : | } | ||
| 1106 : | |||
| 1107 : | edgomez | 195 | BitstreamPutBits(bs, frame->quant, 5); // quantizer |
| 1108 : | |||
| 1109 : | suxen_drol | 136 | if (frame->coding_type != I_VOP) |
| 1110 : | edgomez | 195 | BitstreamPutBits(bs, frame->fcode, 3); // forward_fixed_code |
| 1111 : | suxen_drol | 152 | |
| 1112 : | if (frame->coding_type == B_VOP) | ||
| 1113 : | edgomez | 195 | BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code |
| 1114 : | suxen_drol | 152 | |
| 1115 : | Isibaar | 3 | } |
| 1116 : | suxen_drol | 229 | |
| 1117 : | void | ||
| 1118 : | BitstreamWriteUserData(Bitstream * const bs, | ||
| 1119 : | uint8_t * data, | ||
| 1120 : | const int length) | ||
| 1121 : | { | ||
| 1122 : | int i; | ||
| 1123 : | |||
| 1124 : | BitstreamPad(bs); | ||
| 1125 : | BitstreamPutBits(bs, USERDATA_START_CODE, 32); | ||
| 1126 : | |||
| 1127 : | for (i = 0; i < length; i++) { | ||
| 1128 : | BitstreamPutBits(bs, data[i], 8); | ||
| 1129 : | } | ||
| 1130 : | |||
| 1131 : | chl | 313 | } |
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