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| 1 : | edgomez | 1382 | /***************************************************************************** |
| 2 : | * | ||
| 3 : | * XVID MPEG-4 VIDEO CODEC | ||
| 4 : | * - Bitstream reader/writer - | ||
| 5 : | * | ||
| 6 : | * Copyright (C) 2001-2003 Peter Ross <pross@xvid.org> | ||
| 7 : | * 2003 Cristoph Lampert <gruel@web.de> | ||
| 8 : | * | ||
| 9 : | * This program is free software ; you can redistribute it and/or modify | ||
| 10 : | * it under the terms of the GNU General Public License as published by | ||
| 11 : | * the Free Software Foundation ; either version 2 of the License, or | ||
| 12 : | * (at your option) any later version. | ||
| 13 : | * | ||
| 14 : | * This program is distributed in the hope that it will be useful, | ||
| 15 : | * but WITHOUT ANY WARRANTY ; without even the implied warranty of | ||
| 16 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 17 : | * GNU General Public License for more details. | ||
| 18 : | * | ||
| 19 : | * You should have received a copy of the GNU General Public License | ||
| 20 : | * along with this program ; if not, write to the Free Software | ||
| 21 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 22 : | * | ||
| 23 : | Isibaar | 1988 | * $Id$ |
| 24 : | edgomez | 1382 | * |
| 25 : | ****************************************************************************/ | ||
| 26 : | Isibaar | 3 | |
| 27 : | edgomez | 851 | #include <string.h> |
| 28 : | #include <stdio.h> | ||
| 29 : | |||
| 30 : | Isibaar | 3 | #include "bitstream.h" |
| 31 : | #include "zigzag.h" | ||
| 32 : | Isibaar | 4 | #include "../quant/quant_matrix.h" |
| 33 : | edgomez | 851 | #include "mbcoding.h" |
| 34 : | Isibaar | 3 | |
| 35 : | chenm001 | 124 | |
| 36 : | Skal | 1617 | static const uint8_t log2_tab_16[16] = { 0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4 }; |
| 37 : | Skal | 1616 | |
| 38 : | static uint32_t __inline log2bin(uint32_t value) | ||
| 39 : | Isibaar | 3 | { |
| 40 : | Skal | 1616 | int n = 0; |
| 41 : | if (value & 0xffff0000) { | ||
| 42 : | value >>= 16; | ||
| 43 : | n += 16; | ||
| 44 : | } | ||
| 45 : | if (value & 0xff00) { | ||
| 46 : | value >>= 8; | ||
| 47 : | n += 8; | ||
| 48 : | } | ||
| 49 : | if (value & 0xf0) { | ||
| 50 : | value >>= 4; | ||
| 51 : | n += 4; | ||
| 52 : | } | ||
| 53 : | return n + log2_tab_16[value]; | ||
| 54 : | Isibaar | 3 | } |
| 55 : | |||
| 56 : | edgomez | 195 | static const uint32_t intra_dc_threshold_table[] = { |
| 57 : | 32, /* never use */ | ||
| 58 : | Isibaar | 3 | 13, |
| 59 : | 15, | ||
| 60 : | 17, | ||
| 61 : | 19, | ||
| 62 : | 21, | ||
| 63 : | 23, | ||
| 64 : | 1, | ||
| 65 : | }; | ||
| 66 : | |||
| 67 : | |||
| 68 : | suxen_drol | 1653 | static void |
| 69 : | edgomez | 195 | bs_get_matrix(Bitstream * bs, |
| 70 : | uint8_t * matrix) | ||
| 71 : | { | ||
| 72 : | int i = 0; | ||
| 73 : | int last, value = 0; | ||
| 74 : | Isibaar | 4 | |
| 75 : | edgomez | 195 | do { |
| 76 : | last = value; | ||
| 77 : | value = BitstreamGetBits(bs, 8); | ||
| 78 : | matrix[scan_tables[0][i++]] = value; | ||
| 79 : | } | ||
| 80 : | while (value != 0 && i < 64); | ||
| 81 : | |||
| 82 : | syskin | 1480 | if (value != 0) return; |
| 83 : | |||
| 84 : | i--; | ||
| 85 : | edgomez | 195 | while (i < 64) { |
| 86 : | matrix[scan_tables[0][i++]] = last; | ||
| 87 : | } | ||
| 88 : | } | ||
| 89 : | |||
| 90 : | suxen_drol | 248 | |
| 91 : | |||
| 92 : | edgomez | 1382 | /* |
| 93 : | * for PVOP addbits == fcode - 1 | ||
| 94 : | * for BVOP addbits == max(fcode,bcode) - 1 | ||
| 95 : | * returns mbpos | ||
| 96 : | */ | ||
| 97 : | suxen_drol | 248 | int |
| 98 : | edgomez | 1382 | read_video_packet_header(Bitstream *bs, |
| 99 : | DECODER * dec, | ||
| 100 : | const int addbits, | ||
| 101 : | int * quant, | ||
| 102 : | edgomez | 851 | int * fcode_forward, |
| 103 : | int * fcode_backward, | ||
| 104 : | int * intra_dc_threshold) | ||
| 105 : | suxen_drol | 248 | { |
| 106 : | edgomez | 851 | int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits; |
| 107 : | int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1); | ||
| 108 : | suxen_drol | 248 | int mbnum; |
| 109 : | edgomez | 851 | int hec = 0; |
| 110 : | suxen_drol | 248 | |
| 111 : | BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); | ||
| 112 : | edgomez | 851 | BitstreamSkip(bs, startcode_bits); |
| 113 : | suxen_drol | 248 | |
| 114 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<video_packet_header>\n"); |
| 115 : | suxen_drol | 252 | |
| 116 : | edgomez | 851 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
| 117 : | { | ||
| 118 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
| 119 : | edgomez | 1382 | if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */)) |
| 120 : | edgomez | 851 | { |
| 121 : | BitstreamSkip(bs, 13); /* vop_width */ | ||
| 122 : | READ_MARKER(); | ||
| 123 : | BitstreamSkip(bs, 13); /* vop_height */ | ||
| 124 : | READ_MARKER(); | ||
| 125 : | BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */ | ||
| 126 : | READ_MARKER(); | ||
| 127 : | BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */ | ||
| 128 : | READ_MARKER(); | ||
| 129 : | } | ||
| 130 : | } | ||
| 131 : | suxen_drol | 248 | |
| 132 : | Isibaar | 2167 | mbnum = (mbnum_bits == 0) ? 0 : BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ |
| 133 : | Isibaar | 2168 | DPRINTF(XVID_DEBUG_HEADER, "mbnum %i\n", mbnum); |
| 134 : | suxen_drol | 248 | |
| 135 : | edgomez | 851 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
| 136 : | { | ||
| 137 : | edgomez | 1382 | *quant = BitstreamGetBits(bs, dec->quant_bits); /* quant_scale */ |
| 138 : | DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant); | ||
| 139 : | edgomez | 851 | } |
| 140 : | suxen_drol | 248 | |
| 141 : | edgomez | 851 | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
| 142 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
| 143 : | |||
| 144 : | |||
| 145 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "header_extension_code %i\n", hec); |
| 146 : | edgomez | 851 | if (hec) |
| 147 : | { | ||
| 148 : | int time_base; | ||
| 149 : | int time_increment; | ||
| 150 : | int coding_type; | ||
| 151 : | suxen_drol | 248 | |
| 152 : | edgomez | 851 | for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */ |
| 153 : | READ_MARKER(); | ||
| 154 : | if (dec->time_inc_bits) | ||
| 155 : | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ | ||
| 156 : | READ_MARKER(); | ||
| 157 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"time %i:%i\n", time_base, time_increment); |
| 158 : | edgomez | 851 | |
| 159 : | coding_type = BitstreamGetBits(bs, 2); | ||
| 160 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"coding_type %i\n", coding_type); |
| 161 : | |||
| 162 : | edgomez | 851 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
| 163 : | { | ||
| 164 : | BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ | ||
| 165 : | if (coding_type != I_VOP) | ||
| 166 : | BitstreamSkip(bs, 1); /* vop_shape_coding_type */ | ||
| 167 : | } | ||
| 168 : | |||
| 169 : | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) | ||
| 170 : | { | ||
| 171 : | *intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
| 172 : | |||
| 173 : | if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP && | ||
| 174 : | dec->sprite_warping_points > 0) | ||
| 175 : | { | ||
| 176 : | edgomez | 1382 | /* TODO: sprite trajectory */ |
| 177 : | edgomez | 851 | } |
| 178 : | edgomez | 1382 | if (dec->reduced_resolution_enable && |
| 179 : | edgomez | 851 | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
| 180 : | (coding_type == P_VOP || coding_type == I_VOP)) | ||
| 181 : | { | ||
| 182 : | BitstreamSkip(bs, 1); /* XXX: vop_reduced_resolution */ | ||
| 183 : | } | ||
| 184 : | |||
| 185 : | if (coding_type != I_VOP && fcode_forward) | ||
| 186 : | { | ||
| 187 : | *fcode_forward = BitstreamGetBits(bs, 3); | ||
| 188 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"fcode_forward %i\n", *fcode_forward); |
| 189 : | edgomez | 851 | } |
| 190 : | |||
| 191 : | if (coding_type == B_VOP && fcode_backward) | ||
| 192 : | { | ||
| 193 : | *fcode_backward = BitstreamGetBits(bs, 3); | ||
| 194 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward); |
| 195 : | edgomez | 851 | } |
| 196 : | } | ||
| 197 : | } | ||
| 198 : | |||
| 199 : | if (dec->newpred_enable) | ||
| 200 : | { | ||
| 201 : | int vop_id; | ||
| 202 : | int vop_id_for_prediction; | ||
| 203 : | edgomez | 1382 | |
| 204 : | edgomez | 851 | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
| 205 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id); |
| 206 : | edgomez | 851 | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ |
| 207 : | { | ||
| 208 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
| 209 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
| 210 : | edgomez | 851 | } |
| 211 : | READ_MARKER(); | ||
| 212 : | } | ||
| 213 : | |||
| 214 : | suxen_drol | 248 | return mbnum; |
| 215 : | } | ||
| 216 : | |||
| 217 : | |||
| 218 : | |||
| 219 : | edgomez | 851 | |
| 220 : | /* vol estimation header */ | ||
| 221 : | static void | ||
| 222 : | read_vol_complexity_estimation_header(Bitstream * bs, DECODER * dec) | ||
| 223 : | { | ||
| 224 : | ESTIMATION * e = &dec->estimation; | ||
| 225 : | |||
| 226 : | e->method = BitstreamGetBits(bs, 2); /* estimation_method */ | ||
| 227 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"+ complexity_estimation_header; method=%i\n", e->method); |
| 228 : | edgomez | 851 | |
| 229 : | edgomez | 1382 | if (e->method == 0 || e->method == 1) |
| 230 : | edgomez | 851 | { |
| 231 : | if (!BitstreamGetBit(bs)) /* shape_complexity_estimation_disable */ | ||
| 232 : | { | ||
| 233 : | e->opaque = BitstreamGetBit(bs); /* opaque */ | ||
| 234 : | e->transparent = BitstreamGetBit(bs); /* transparent */ | ||
| 235 : | e->intra_cae = BitstreamGetBit(bs); /* intra_cae */ | ||
| 236 : | e->inter_cae = BitstreamGetBit(bs); /* inter_cae */ | ||
| 237 : | e->no_update = BitstreamGetBit(bs); /* no_update */ | ||
| 238 : | e->upsampling = BitstreamGetBit(bs); /* upsampling */ | ||
| 239 : | } | ||
| 240 : | |||
| 241 : | if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_1_disable */ | ||
| 242 : | { | ||
| 243 : | e->intra_blocks = BitstreamGetBit(bs); /* intra_blocks */ | ||
| 244 : | e->inter_blocks = BitstreamGetBit(bs); /* inter_blocks */ | ||
| 245 : | e->inter4v_blocks = BitstreamGetBit(bs); /* inter4v_blocks */ | ||
| 246 : | e->not_coded_blocks = BitstreamGetBit(bs); /* not_coded_blocks */ | ||
| 247 : | } | ||
| 248 : | } | ||
| 249 : | |||
| 250 : | READ_MARKER(); | ||
| 251 : | |||
| 252 : | if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_2_disable */ | ||
| 253 : | { | ||
| 254 : | e->dct_coefs = BitstreamGetBit(bs); /* dct_coefs */ | ||
| 255 : | e->dct_lines = BitstreamGetBit(bs); /* dct_lines */ | ||
| 256 : | e->vlc_symbols = BitstreamGetBit(bs); /* vlc_symbols */ | ||
| 257 : | e->vlc_bits = BitstreamGetBit(bs); /* vlc_bits */ | ||
| 258 : | } | ||
| 259 : | |||
| 260 : | if (!BitstreamGetBit(bs)) /* motion_compensation_complexity_disable */ | ||
| 261 : | { | ||
| 262 : | e->apm = BitstreamGetBit(bs); /* apm */ | ||
| 263 : | e->npm = BitstreamGetBit(bs); /* npm */ | ||
| 264 : | e->interpolate_mc_q = BitstreamGetBit(bs); /* interpolate_mc_q */ | ||
| 265 : | e->forw_back_mc_q = BitstreamGetBit(bs); /* forw_back_mc_q */ | ||
| 266 : | e->halfpel2 = BitstreamGetBit(bs); /* halfpel2 */ | ||
| 267 : | e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */ | ||
| 268 : | } | ||
| 269 : | |||
| 270 : | READ_MARKER(); | ||
| 271 : | |||
| 272 : | if (e->method == 1) | ||
| 273 : | { | ||
| 274 : | if (!BitstreamGetBit(bs)) /* version2_complexity_estimation_disable */ | ||
| 275 : | { | ||
| 276 : | e->sadct = BitstreamGetBit(bs); /* sadct */ | ||
| 277 : | e->quarterpel = BitstreamGetBit(bs); /* quarterpel */ | ||
| 278 : | } | ||
| 279 : | } | ||
| 280 : | } | ||
| 281 : | |||
| 282 : | |||
| 283 : | /* vop estimation header */ | ||
| 284 : | static void | ||
| 285 : | read_vop_complexity_estimation_header(Bitstream * bs, DECODER * dec, int coding_type) | ||
| 286 : | { | ||
| 287 : | ESTIMATION * e = &dec->estimation; | ||
| 288 : | |||
| 289 : | if (e->method == 0 || e->method == 1) | ||
| 290 : | { | ||
| 291 : | if (coding_type == I_VOP) { | ||
| 292 : | if (e->opaque) BitstreamSkip(bs, 8); /* dcecs_opaque */ | ||
| 293 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
| 294 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
| 295 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
| 296 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
| 297 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
| 298 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 299 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 300 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
| 301 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
| 302 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
| 303 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
| 304 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
| 305 : | } | ||
| 306 : | edgomez | 1382 | |
| 307 : | edgomez | 851 | if (coding_type == P_VOP) { |
| 308 : | if (e->opaque) BitstreamSkip(bs, 8); /* */ | ||
| 309 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
| 310 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
| 311 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
| 312 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
| 313 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
| 314 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 315 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 316 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
| 317 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
| 318 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
| 319 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
| 320 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 321 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 322 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
| 323 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
| 324 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
| 325 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
| 326 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
| 327 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
| 328 : | if (e->quarterpel) BitstreamSkip(bs, 8); /* */ | ||
| 329 : | } | ||
| 330 : | if (coding_type == B_VOP) { | ||
| 331 : | if (e->opaque) BitstreamSkip(bs, 8); /* */ | ||
| 332 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
| 333 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
| 334 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
| 335 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
| 336 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
| 337 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 338 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 339 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
| 340 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
| 341 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
| 342 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
| 343 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 344 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 345 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
| 346 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
| 347 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
| 348 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
| 349 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
| 350 : | if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ | ||
| 351 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
| 352 : | if (e->quarterpel) BitstreamSkip(bs, 8); /* */ | ||
| 353 : | } | ||
| 354 : | |||
| 355 : | if (coding_type == S_VOP && dec->sprite_enable == SPRITE_STATIC) { | ||
| 356 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 357 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 358 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
| 359 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
| 360 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
| 361 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
| 362 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 363 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
| 364 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
| 365 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
| 366 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
| 367 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
| 368 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
| 369 : | if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ | ||
| 370 : | } | ||
| 371 : | } | ||
| 372 : | } | ||
| 373 : | |||
| 374 : | |||
| 375 : | |||
| 376 : | |||
| 377 : | |||
| 378 : | Isibaar | 3 | /* |
| 379 : | decode headers | ||
| 380 : | returns coding_type, or -1 if error | ||
| 381 : | */ | ||
| 382 : | |||
| 383 : | suxen_drol | 252 | #define VIDOBJ_START_CODE_MASK 0x0000001f |
| 384 : | #define VIDOBJLAY_START_CODE_MASK 0x0000000f | ||
| 385 : | |||
| 386 : | edgomez | 195 | int |
| 387 : | BitstreamReadHeaders(Bitstream * bs, | ||
| 388 : | DECODER * dec, | ||
| 389 : | uint32_t * rounding, | ||
| 390 : | uint32_t * quant, | ||
| 391 : | uint32_t * fcode_forward, | ||
| 392 : | uint32_t * fcode_backward, | ||
| 393 : | edgomez | 851 | uint32_t * intra_dc_threshold, |
| 394 : | WARPPOINTS *gmc_warp) | ||
| 395 : | Isibaar | 3 | { |
| 396 : | uint32_t vol_ver_id; | ||
| 397 : | uint32_t coding_type; | ||
| 398 : | uint32_t start_code; | ||
| 399 : | edgomez | 195 | uint32_t time_incr = 0; |
| 400 : | edgomez | 876 | int32_t time_increment = 0; |
| 401 : | edgomez | 851 | int resize = 0; |
| 402 : | chenm001 | 156 | |
| 403 : | syskin | 1553 | while ((BitstreamPos(bs) >> 3) + 4 <= bs->length) { |
| 404 : | edgomez | 851 | |
| 405 : | Isibaar | 3 | BitstreamByteAlign(bs); |
| 406 : | start_code = BitstreamShowBits(bs, 32); | ||
| 407 : | |||
| 408 : | edgomez | 195 | if (start_code == VISOBJSEQ_START_CODE) { |
| 409 : | suxen_drol | 252 | |
| 410 : | int profile; | ||
| 411 : | |||
| 412 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object_sequence>\n"); |
| 413 : | suxen_drol | 252 | |
| 414 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* visual_object_sequence_start_code */ |
| 415 : | profile = BitstreamGetBits(bs, 8); /* profile_and_level_indication */ | ||
| 416 : | suxen_drol | 252 | |
| 417 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "profile_and_level_indication %i\n", profile); |
| 418 : | suxen_drol | 252 | |
| 419 : | edgomez | 195 | } else if (start_code == VISOBJSEQ_STOP_CODE) { |
| 420 : | suxen_drol | 252 | |
| 421 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* visual_object_sequence_stop_code */ |
| 422 : | suxen_drol | 252 | |
| 423 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n"); |
| 424 : | suxen_drol | 252 | |
| 425 : | edgomez | 195 | } else if (start_code == VISOBJ_START_CODE) { |
| 426 : | suxen_drol | 252 | |
| 427 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n"); |
| 428 : | suxen_drol | 252 | |
| 429 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* visual_object_start_code */ |
| 430 : | if (BitstreamGetBit(bs)) /* is_visual_object_identified */ | ||
| 431 : | Isibaar | 3 | { |
| 432 : | Skal | 1696 | dec->ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
| 433 : | DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", dec->ver_id); | ||
| 434 : | edgomez | 1382 | BitstreamSkip(bs, 3); /* visual_object_priority */ |
| 435 : | edgomez | 195 | } else { |
| 436 : | Skal | 1696 | dec->ver_id = 1; |
| 437 : | Isibaar | 3 | } |
| 438 : | |||
| 439 : | edgomez | 1382 | if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
| 440 : | Isibaar | 3 | { |
| 441 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "visual_object_type != video\n"); |
| 442 : | Isibaar | 3 | return -1; |
| 443 : | } | ||
| 444 : | BitstreamSkip(bs, 4); | ||
| 445 : | |||
| 446 : | edgomez | 1382 | /* video_signal_type */ |
| 447 : | Isibaar | 3 | |
| 448 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* video_signal_type */ |
| 449 : | Isibaar | 3 | { |
| 450 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"+ video_signal_type\n"); |
| 451 : | BitstreamSkip(bs, 3); /* video_format */ | ||
| 452 : | BitstreamSkip(bs, 1); /* video_range */ | ||
| 453 : | if (BitstreamGetBit(bs)) /* color_description */ | ||
| 454 : | Isibaar | 3 | { |
| 455 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"+ color_description"); |
| 456 : | BitstreamSkip(bs, 8); /* color_primaries */ | ||
| 457 : | BitstreamSkip(bs, 8); /* transfer_characteristics */ | ||
| 458 : | BitstreamSkip(bs, 8); /* matrix_coefficients */ | ||
| 459 : | Isibaar | 3 | } |
| 460 : | } | ||
| 461 : | suxen_drol | 252 | } else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
| 462 : | |||
| 463 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<video_object>\n"); |
| 464 : | DPRINTF(XVID_DEBUG_HEADER, "vo id %i\n", start_code & VIDOBJ_START_CODE_MASK); | ||
| 465 : | suxen_drol | 252 | |
| 466 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* video_object_start_code */ |
| 467 : | suxen_drol | 252 | |
| 468 : | } else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { | ||
| 469 : | |||
| 470 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<video_object_layer>\n"); |
| 471 : | DPRINTF(XVID_DEBUG_HEADER, "vol id %i\n", start_code & VIDOBJLAY_START_CODE_MASK); | ||
| 472 : | suxen_drol | 252 | |
| 473 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* video_object_layer_start_code */ |
| 474 : | BitstreamSkip(bs, 1); /* random_accessible_vol */ | ||
| 475 : | Isibaar | 3 | |
| 476 : | edgomez | 1382 | BitstreamSkip(bs, 8); /* video_object_type_indication */ |
| 477 : | Isibaar | 3 | |
| 478 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* is_object_layer_identifier */ |
| 479 : | Isibaar | 3 | { |
| 480 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "+ is_object_layer_identifier\n"); |
| 481 : | vol_ver_id = BitstreamGetBits(bs, 4); /* video_object_layer_verid */ | ||
| 482 : | DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id); | ||
| 483 : | BitstreamSkip(bs, 3); /* video_object_layer_priority */ | ||
| 484 : | edgomez | 195 | } else { |
| 485 : | Skal | 1696 | vol_ver_id = dec->ver_id; |
| 486 : | Isibaar | 3 | } |
| 487 : | |||
| 488 : | edgomez | 851 | dec->aspect_ratio = BitstreamGetBits(bs, 4); |
| 489 : | |||
| 490 : | edgomez | 1382 | if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */ |
| 491 : | Isibaar | 3 | { |
| 492 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "+ aspect_ratio_info\n"); |
| 493 : | dec->par_width = BitstreamGetBits(bs, 8); /* par_width */ | ||
| 494 : | dec->par_height = BitstreamGetBits(bs, 8); /* par_height */ | ||
| 495 : | Isibaar | 3 | } |
| 496 : | |||
| 497 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* vol_control_parameters */ |
| 498 : | Isibaar | 3 | { |
| 499 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "+ vol_control_parameters\n"); |
| 500 : | BitstreamSkip(bs, 2); /* chroma_format */ | ||
| 501 : | dec->low_delay = BitstreamGetBit(bs); /* low_delay */ | ||
| 502 : | DPRINTF(XVID_DEBUG_HEADER, "low_delay %i\n", dec->low_delay); | ||
| 503 : | if (BitstreamGetBit(bs)) /* vbv_parameters */ | ||
| 504 : | Isibaar | 3 | { |
| 505 : | edgomez | 851 | unsigned int bitrate; |
| 506 : | unsigned int buffer_size; | ||
| 507 : | unsigned int occupancy; | ||
| 508 : | |||
| 509 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"+ vbv_parameters\n"); |
| 510 : | edgomez | 851 | |
| 511 : | edgomez | 1382 | bitrate = BitstreamGetBits(bs,15) << 15; /* first_half_bit_rate */ |
| 512 : | Isibaar | 3 | READ_MARKER(); |
| 513 : | edgomez | 1382 | bitrate |= BitstreamGetBits(bs,15); /* latter_half_bit_rate */ |
| 514 : | Isibaar | 3 | READ_MARKER(); |
| 515 : | edgomez | 1382 | |
| 516 : | buffer_size = BitstreamGetBits(bs, 15) << 3; /* first_half_vbv_buffer_size */ | ||
| 517 : | Isibaar | 3 | READ_MARKER(); |
| 518 : | edgomez | 1382 | buffer_size |= BitstreamGetBits(bs, 3); /* latter_half_vbv_buffer_size */ |
| 519 : | edgomez | 851 | |
| 520 : | edgomez | 1382 | occupancy = BitstreamGetBits(bs, 11) << 15; /* first_half_vbv_occupancy */ |
| 521 : | Isibaar | 3 | READ_MARKER(); |
| 522 : | edgomez | 1382 | occupancy |= BitstreamGetBits(bs, 15); /* latter_half_vbv_occupancy */ |
| 523 : | Isibaar | 3 | READ_MARKER(); |
| 524 : | edgomez | 195 | |
| 525 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"bitrate %d (unit=400 bps)\n", bitrate); |
| 526 : | DPRINTF(XVID_DEBUG_HEADER,"buffer_size %d (unit=16384 bits)\n", buffer_size); | ||
| 527 : | DPRINTF(XVID_DEBUG_HEADER,"occupancy %d (unit=64 bits)\n", occupancy); | ||
| 528 : | Isibaar | 3 | } |
| 529 : | edgomez | 851 | }else{ |
| 530 : | dec->low_delay = dec->low_delay_default; | ||
| 531 : | Isibaar | 3 | } |
| 532 : | |||
| 533 : | edgomez | 1382 | dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */ |
| 534 : | edgomez | 851 | |
| 535 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "shape %i\n", dec->shape); |
| 536 : | edgomez | 851 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
| 537 : | { | ||
| 538 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR,"non-rectangular shapes are not supported\n"); |
| 539 : | edgomez | 851 | } |
| 540 : | edgomez | 195 | |
| 541 : | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { | ||
| 542 : | edgomez | 1382 | BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */ |
| 543 : | Isibaar | 3 | } |
| 544 : | |||
| 545 : | READ_MARKER(); | ||
| 546 : | |||
| 547 : | edgomez | 1382 | /********************** for decode B-frame time ***********************/ |
| 548 : | dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ | ||
| 549 : | DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i\n", dec->time_inc_resolution); | ||
| 550 : | suxen_drol | 252 | |
| 551 : | edgomez | 851 | if (dec->time_inc_resolution > 0) { |
| 552 : | edgomez | 1466 | dec->time_inc_bits = MAX(log2bin(dec->time_inc_resolution-1), 1); |
| 553 : | edgomez | 195 | } else { |
| 554 : | edgomez | 1382 | /* for "old" xvid compatibility, set time_inc_bits = 1 */ |
| 555 : | Isibaar | 3 | dec->time_inc_bits = 1; |
| 556 : | } | ||
| 557 : | |||
| 558 : | READ_MARKER(); | ||
| 559 : | |||
| 560 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* fixed_vop_rate */ |
| 561 : | Isibaar | 3 | { |
| 562 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "+ fixed_vop_rate\n"); |
| 563 : | BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */ | ||
| 564 : | Isibaar | 3 | } |
| 565 : | |||
| 566 : | edgomez | 195 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
| 567 : | Isibaar | 3 | |
| 568 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { |
| 569 : | Isibaar | 3 | uint32_t width, height; |
| 570 : | |||
| 571 : | READ_MARKER(); | ||
| 572 : | edgomez | 1382 | width = BitstreamGetBits(bs, 13); /* video_object_layer_width */ |
| 573 : | Isibaar | 3 | READ_MARKER(); |
| 574 : | edgomez | 1382 | height = BitstreamGetBits(bs, 13); /* video_object_layer_height */ |
| 575 : | Isibaar | 3 | READ_MARKER(); |
| 576 : | |||
| 577 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
| 578 : | DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); | ||
| 579 : | suxen_drol | 252 | |
| 580 : | edgomez | 851 | if (dec->width != width || dec->height != height) |
| 581 : | { | ||
| 582 : | if (dec->fixed_dimensions) | ||
| 583 : | { | ||
| 584 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "decoder width/height does not match bitstream\n"); |
| 585 : | edgomez | 851 | return -1; |
| 586 : | } | ||
| 587 : | resize = 1; | ||
| 588 : | chenm001 | 294 | dec->width = width; |
| 589 : | dec->height = height; | ||
| 590 : | Isibaar | 3 | } |
| 591 : | } | ||
| 592 : | h | 69 | |
| 593 : | suxen_drol | 252 | dec->interlacing = BitstreamGetBit(bs); |
| 594 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "interlacing %i\n", dec->interlacing); |
| 595 : | Isibaar | 3 | |
| 596 : | edgomez | 1382 | if (!BitstreamGetBit(bs)) /* obmc_disable */ |
| 597 : | Isibaar | 3 | { |
| 598 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "obmc_disabled==false not supported\n"); |
| 599 : | /* TODO */ | ||
| 600 : | /* fucking divx4.02 has this enabled */ | ||
| 601 : | Isibaar | 3 | } |
| 602 : | |||
| 603 : | edgomez | 1382 | dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); /* sprite_enable */ |
| 604 : | edgomez | 851 | |
| 605 : | if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC) | ||
| 606 : | Isibaar | 3 | { |
| 607 : | edgomez | 851 | int low_latency_sprite_enable; |
| 608 : | |||
| 609 : | if (dec->sprite_enable != SPRITE_GMC) | ||
| 610 : | { | ||
| 611 : | int sprite_width; | ||
| 612 : | int sprite_height; | ||
| 613 : | int sprite_left_coord; | ||
| 614 : | int sprite_top_coord; | ||
| 615 : | edgomez | 1382 | sprite_width = BitstreamGetBits(bs, 13); /* sprite_width */ |
| 616 : | edgomez | 851 | READ_MARKER(); |
| 617 : | edgomez | 1382 | sprite_height = BitstreamGetBits(bs, 13); /* sprite_height */ |
| 618 : | edgomez | 851 | READ_MARKER(); |
| 619 : | edgomez | 1382 | sprite_left_coord = BitstreamGetBits(bs, 13); /* sprite_left_coordinate */ |
| 620 : | edgomez | 851 | READ_MARKER(); |
| 621 : | edgomez | 1382 | sprite_top_coord = BitstreamGetBits(bs, 13); /* sprite_top_coordinate */ |
| 622 : | edgomez | 851 | READ_MARKER(); |
| 623 : | } | ||
| 624 : | edgomez | 1382 | dec->sprite_warping_points = BitstreamGetBits(bs, 6); /* no_of_sprite_warping_points */ |
| 625 : | dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); /* sprite_warping_accuracy */ | ||
| 626 : | dec->sprite_brightness_change = BitstreamGetBits(bs, 1); /* brightness_change */ | ||
| 627 : | edgomez | 851 | if (dec->sprite_enable != SPRITE_GMC) |
| 628 : | { | ||
| 629 : | edgomez | 1382 | low_latency_sprite_enable = BitstreamGetBits(bs, 1); /* low_latency_sprite_enable */ |
| 630 : | edgomez | 851 | } |
| 631 : | Isibaar | 3 | } |
| 632 : | edgomez | 195 | |
| 633 : | if (vol_ver_id != 1 && | ||
| 634 : | dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { | ||
| 635 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* sadct_disable */ |
| 636 : | Isibaar | 3 | } |
| 637 : | |||
| 638 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* not_8_bit */ |
| 639 : | Isibaar | 3 | { |
| 640 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "not_8_bit==true (ignored)\n"); |
| 641 : | dec->quant_bits = BitstreamGetBits(bs, 4); /* quant_precision */ | ||
| 642 : | BitstreamSkip(bs, 4); /* bits_per_pixel */ | ||
| 643 : | edgomez | 195 | } else { |
| 644 : | Isibaar | 3 | dec->quant_bits = 5; |
| 645 : | } | ||
| 646 : | |||
| 647 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
| 648 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* no_gray_quant_update */ |
| 649 : | BitstreamSkip(bs, 1); /* composition_method */ | ||
| 650 : | BitstreamSkip(bs, 1); /* linear_composition */ | ||
| 651 : | Isibaar | 3 | } |
| 652 : | |||
| 653 : | edgomez | 1382 | dec->quant_type = BitstreamGetBit(bs); /* quant_type */ |
| 654 : | DPRINTF(XVID_DEBUG_HEADER, "quant_type %i\n", dec->quant_type); | ||
| 655 : | Isibaar | 3 | |
| 656 : | edgomez | 195 | if (dec->quant_type) { |
| 657 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* load_intra_quant_mat */ |
| 658 : | Isibaar | 3 | { |
| 659 : | Isibaar | 20 | uint8_t matrix[64]; |
| 660 : | edgomez | 195 | |
| 661 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat\n"); |
| 662 : | suxen_drol | 252 | |
| 663 : | Isibaar | 4 | bs_get_matrix(bs, matrix); |
| 664 : | edgomez | 1382 | set_intra_matrix(dec->mpeg_quant_matrices, matrix); |
| 665 : | edgomez | 195 | } else |
| 666 : | edgomez | 1382 | set_intra_matrix(dec->mpeg_quant_matrices, get_default_intra_matrix()); |
| 667 : | Isibaar | 4 | |
| 668 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* load_inter_quant_mat */ |
| 669 : | Isibaar | 3 | { |
| 670 : | edgomez | 195 | uint8_t matrix[64]; |
| 671 : | |||
| 672 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat\n"); |
| 673 : | |||
| 674 : | Isibaar | 4 | bs_get_matrix(bs, matrix); |
| 675 : | edgomez | 1382 | set_inter_matrix(dec->mpeg_quant_matrices, matrix); |
| 676 : | edgomez | 195 | } else |
| 677 : | edgomez | 1382 | set_inter_matrix(dec->mpeg_quant_matrices, get_default_inter_matrix()); |
| 678 : | Isibaar | 3 | |
| 679 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
| 680 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported\n"); |
| 681 : | Isibaar | 3 | return -1; |
| 682 : | } | ||
| 683 : | Isibaar | 4 | |
| 684 : | Isibaar | 3 | } |
| 685 : | |||
| 686 : | edgomez | 195 | |
| 687 : | if (vol_ver_id != 1) { | ||
| 688 : | edgomez | 1382 | dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */ |
| 689 : | DPRINTF(XVID_DEBUG_HEADER,"quarterpel %i\n", dec->quarterpel); | ||
| 690 : | Isibaar | 3 | } |
| 691 : | Isibaar | 333 | else |
| 692 : | dec->quarterpel = 0; | ||
| 693 : | Isibaar | 3 | |
| 694 : | edgomez | 1382 | |
| 695 : | edgomez | 851 | dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */ |
| 696 : | if (!dec->complexity_estimation_disable) | ||
| 697 : | Isibaar | 3 | { |
| 698 : | edgomez | 851 | read_vol_complexity_estimation_header(bs, dec); |
| 699 : | Isibaar | 3 | } |
| 700 : | |||
| 701 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* resync_marker_disable */ |
| 702 : | Isibaar | 3 | |
| 703 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* data_partitioned */ |
| 704 : | Isibaar | 3 | { |
| 705 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "data_partitioned not supported\n"); |
| 706 : | BitstreamSkip(bs, 1); /* reversible_vlc */ | ||
| 707 : | Isibaar | 3 | } |
| 708 : | |||
| 709 : | edgomez | 195 | if (vol_ver_id != 1) { |
| 710 : | edgomez | 851 | dec->newpred_enable = BitstreamGetBit(bs); |
| 711 : | edgomez | 1382 | if (dec->newpred_enable) /* newpred_enable */ |
| 712 : | Isibaar | 3 | { |
| 713 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "+ newpred_enable\n"); |
| 714 : | BitstreamSkip(bs, 2); /* requested_upstream_message_type */ | ||
| 715 : | BitstreamSkip(bs, 1); /* newpred_segment_type */ | ||
| 716 : | Isibaar | 3 | } |
| 717 : | edgomez | 851 | dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */ |
| 718 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution_enable %i\n", dec->reduced_resolution_enable); |
| 719 : | Isibaar | 3 | } |
| 720 : | edgomez | 851 | else |
| 721 : | { | ||
| 722 : | dec->newpred_enable = 0; | ||
| 723 : | dec->reduced_resolution_enable = 0; | ||
| 724 : | } | ||
| 725 : | edgomez | 195 | |
| 726 : | edgomez | 851 | dec->scalability = BitstreamGetBit(bs); /* scalability */ |
| 727 : | edgomez | 1382 | if (dec->scalability) |
| 728 : | Isibaar | 3 | { |
| 729 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
| 730 : | edgomez | 851 | BitstreamSkip(bs, 1); /* hierarchy_type */ |
| 731 : | BitstreamSkip(bs, 4); /* ref_layer_id */ | ||
| 732 : | BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */ | ||
| 733 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ | ||
| 734 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ | ||
| 735 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ | ||
| 736 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ | ||
| 737 : | BitstreamSkip(bs, 1); /* enhancement_type */ | ||
| 738 : | if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) { | ||
| 739 : | BitstreamSkip(bs, 1); /* use_ref_shape */ | ||
| 740 : | BitstreamSkip(bs, 1); /* use_ref_texture */ | ||
| 741 : | BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */ | ||
| 742 : | BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */ | ||
| 743 : | BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */ | ||
| 744 : | BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */ | ||
| 745 : | } | ||
| 746 : | Isibaar | 3 | return -1; |
| 747 : | } | ||
| 748 : | edgomez | 1382 | } else /* dec->shape == BINARY_ONLY */ |
| 749 : | Isibaar | 3 | { |
| 750 : | edgomez | 195 | if (vol_ver_id != 1) { |
| 751 : | edgomez | 851 | dec->scalability = BitstreamGetBit(bs); /* scalability */ |
| 752 : | edgomez | 1382 | if (dec->scalability) |
| 753 : | Isibaar | 3 | { |
| 754 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
| 755 : | edgomez | 851 | BitstreamSkip(bs, 4); /* ref_layer_id */ |
| 756 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ | ||
| 757 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ | ||
| 758 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ | ||
| 759 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ | ||
| 760 : | Isibaar | 3 | return -1; |
| 761 : | } | ||
| 762 : | } | ||
| 763 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* resync_marker_disable */ |
| 764 : | Isibaar | 3 | |
| 765 : | } | ||
| 766 : | |||
| 767 : | edgomez | 851 | return (resize ? -3 : -2 ); /* VOL */ |
| 768 : | |||
| 769 : | edgomez | 195 | } else if (start_code == GRPOFVOP_START_CODE) { |
| 770 : | suxen_drol | 252 | |
| 771 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<group_of_vop>\n"); |
| 772 : | suxen_drol | 252 | |
| 773 : | Isibaar | 3 | BitstreamSkip(bs, 32); |
| 774 : | { | ||
| 775 : | int hours, minutes, seconds; | ||
| 776 : | edgomez | 195 | |
| 777 : | Isibaar | 3 | hours = BitstreamGetBits(bs, 5); |
| 778 : | minutes = BitstreamGetBits(bs, 6); | ||
| 779 : | READ_MARKER(); | ||
| 780 : | seconds = BitstreamGetBits(bs, 6); | ||
| 781 : | edgomez | 1382 | |
| 782 : | DPRINTF(XVID_DEBUG_HEADER, "time %ih%im%is\n", hours,minutes,seconds); | ||
| 783 : | Isibaar | 3 | } |
| 784 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* closed_gov */ |
| 785 : | BitstreamSkip(bs, 1); /* broken_link */ | ||
| 786 : | suxen_drol | 252 | |
| 787 : | edgomez | 195 | } else if (start_code == VOP_START_CODE) { |
| 788 : | suxen_drol | 252 | |
| 789 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<vop>\n"); |
| 790 : | suxen_drol | 252 | |
| 791 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* vop_start_code */ |
| 792 : | Isibaar | 3 | |
| 793 : | edgomez | 1382 | coding_type = BitstreamGetBits(bs, 2); /* vop_coding_type */ |
| 794 : | DPRINTF(XVID_DEBUG_HEADER, "coding_type %i\n", coding_type); | ||
| 795 : | Isibaar | 3 | |
| 796 : | edgomez | 1382 | /*********************** for decode B-frame time ***********************/ |
| 797 : | while (BitstreamGetBit(bs) != 0) /* time_base */ | ||
| 798 : | chenm001 | 156 | time_incr++; |
| 799 : | edgomez | 195 | |
| 800 : | Isibaar | 3 | READ_MARKER(); |
| 801 : | edgomez | 195 | |
| 802 : | if (dec->time_inc_bits) { | ||
| 803 : | edgomez | 1382 | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ |
| 804 : | Isibaar | 3 | } |
| 805 : | suxen_drol | 240 | |
| 806 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "time_base %i\n", time_incr); |
| 807 : | DPRINTF(XVID_DEBUG_HEADER, "time_increment %i\n", time_increment); | ||
| 808 : | suxen_drol | 252 | |
| 809 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_TIMECODE, "%c %i:%i\n", |
| 810 : | edgomez | 851 | coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S', |
| 811 : | suxen_drol | 240 | time_incr, time_increment); |
| 812 : | |||
| 813 : | edgomez | 195 | if (coding_type != B_VOP) { |
| 814 : | dec->last_time_base = dec->time_base; | ||
| 815 : | chenm001 | 156 | dec->time_base += time_incr; |
| 816 : | edgomez | 1466 | dec->time = dec->time_base*dec->time_inc_resolution + time_increment; |
| 817 : | dec->time_pp = (int32_t)(dec->time - dec->last_non_b_time); | ||
| 818 : | Isibaar | 1785 | dec->last_non_b_time = dec->time; |
| 819 : | edgomez | 195 | } else { |
| 820 : | Isibaar | 1785 | dec->time = (dec->last_time_base + time_incr)*dec->time_inc_resolution + time_increment; |
| 821 : | edgomez | 1466 | dec->time_bp = dec->time_pp - (int32_t)(dec->last_non_b_time - dec->time); |
| 822 : | chenm001 | 156 | } |
| 823 : | Isibaar | 1785 | if (dec->time_pp <= 0) dec->time_pp = 1; |
| 824 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
| 825 : | DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); | ||
| 826 : | Isibaar | 3 | |
| 827 : | READ_MARKER(); | ||
| 828 : | |||
| 829 : | edgomez | 1382 | if (!BitstreamGetBit(bs)) /* vop_coded */ |
| 830 : | Isibaar | 3 | { |
| 831 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "vop_coded==false\n"); |
| 832 : | Isibaar | 3 | return N_VOP; |
| 833 : | } | ||
| 834 : | |||
| 835 : | edgomez | 851 | if (dec->newpred_enable) |
| 836 : | { | ||
| 837 : | int vop_id; | ||
| 838 : | int vop_id_for_prediction; | ||
| 839 : | edgomez | 1382 | |
| 840 : | edgomez | 851 | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
| 841 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id); |
| 842 : | edgomez | 851 | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ |
| 843 : | { | ||
| 844 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
| 845 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
| 846 : | edgomez | 851 | } |
| 847 : | READ_MARKER(); | ||
| 848 : | } | ||
| 849 : | Isibaar | 3 | |
| 850 : | edgomez | 851 | |
| 851 : | edgomez | 1382 | |
| 852 : | /* fix a little bug by MinChen <chenm002@163.com> */ | ||
| 853 : | edgomez | 195 | if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
| 854 : | edgomez | 851 | ( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) { |
| 855 : | edgomez | 1382 | *rounding = BitstreamGetBit(bs); /* rounding_type */ |
| 856 : | DPRINTF(XVID_DEBUG_HEADER, "rounding %i\n", *rounding); | ||
| 857 : | Isibaar | 3 | } |
| 858 : | |||
| 859 : | edgomez | 851 | if (dec->reduced_resolution_enable && |
| 860 : | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && | ||
| 861 : | (coding_type == P_VOP || coding_type == I_VOP)) { | ||
| 862 : | Isibaar | 3 | |
| 863 : | Isibaar | 2169 | if (BitstreamGetBit(bs)) { |
| 864 : | syskin | 1566 | DPRINTF(XVID_DEBUG_ERROR, "RRV not supported (anymore)\n"); |
| 865 : | Isibaar | 2169 | } |
| 866 : | edgomez | 851 | } |
| 867 : | |||
| 868 : | edgomez | 195 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
| 869 : | edgomez | 851 | if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) { |
| 870 : | edgomez | 195 | |
| 871 : | edgomez | 851 | uint32_t width, height; |
| 872 : | uint32_t horiz_mc_ref, vert_mc_ref; | ||
| 873 : | Isibaar | 3 | |
| 874 : | edgomez | 851 | width = BitstreamGetBits(bs, 13); |
| 875 : | READ_MARKER(); | ||
| 876 : | height = BitstreamGetBits(bs, 13); | ||
| 877 : | READ_MARKER(); | ||
| 878 : | horiz_mc_ref = BitstreamGetBits(bs, 13); | ||
| 879 : | READ_MARKER(); | ||
| 880 : | vert_mc_ref = BitstreamGetBits(bs, 13); | ||
| 881 : | READ_MARKER(); | ||
| 882 : | Isibaar | 3 | |
| 883 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
| 884 : | DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); | ||
| 885 : | DPRINTF(XVID_DEBUG_HEADER, "horiz_mc_ref %i\n", horiz_mc_ref); | ||
| 886 : | DPRINTF(XVID_DEBUG_HEADER, "vert_mc_ref %i\n", vert_mc_ref); | ||
| 887 : | edgomez | 851 | } |
| 888 : | |||
| 889 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ |
| 890 : | if (BitstreamGetBit(bs)) /* vop_constant_alpha */ | ||
| 891 : | Isibaar | 3 | { |
| 892 : | edgomez | 1382 | BitstreamSkip(bs, 8); /* vop_constant_alpha_value */ |
| 893 : | Isibaar | 3 | } |
| 894 : | } | ||
| 895 : | |||
| 896 : | edgomez | 851 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
| 897 : | edgomez | 195 | |
| 898 : | edgomez | 851 | if (!dec->complexity_estimation_disable) |
| 899 : | { | ||
| 900 : | read_vop_complexity_estimation_header(bs, dec, coding_type); | ||
| 901 : | } | ||
| 902 : | |||
| 903 : | edgomez | 1382 | /* intra_dc_vlc_threshold */ |
| 904 : | edgomez | 195 | *intra_dc_threshold = |
| 905 : | intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
| 906 : | Isibaar | 3 | |
| 907 : | edgomez | 851 | dec->top_field_first = 0; |
| 908 : | dec->alternate_vertical_scan = 0; | ||
| 909 : | |||
| 910 : | edgomez | 195 | if (dec->interlacing) { |
| 911 : | suxen_drol | 252 | dec->top_field_first = BitstreamGetBit(bs); |
| 912 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "interlace top_field_first %i\n", dec->top_field_first); |
| 913 : | suxen_drol | 252 | dec->alternate_vertical_scan = BitstreamGetBit(bs); |
| 914 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "interlace alternate_vertical_scan %i\n", dec->alternate_vertical_scan); |
| 915 : | |||
| 916 : | h | 69 | } |
| 917 : | Isibaar | 3 | } |
| 918 : | edgomez | 195 | |
| 919 : | edgomez | 851 | if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) { |
| 920 : | |||
| 921 : | int i; | ||
| 922 : | |||
| 923 : | for (i = 0 ; i < dec->sprite_warping_points; i++) | ||
| 924 : | { | ||
| 925 : | int length; | ||
| 926 : | int x = 0, y = 0; | ||
| 927 : | |||
| 928 : | /* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */ | ||
| 929 : | length = bs_get_spritetrajectory(bs); | ||
| 930 : | if(length){ | ||
| 931 : | x= BitstreamGetBits(bs, length); | ||
| 932 : | if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
| 933 : | x = - (x ^ ((1 << length) - 1)); | ||
| 934 : | } | ||
| 935 : | READ_MARKER(); | ||
| 936 : | edgomez | 1382 | |
| 937 : | edgomez | 851 | length = bs_get_spritetrajectory(bs); |
| 938 : | if(length){ | ||
| 939 : | y = BitstreamGetBits(bs, length); | ||
| 940 : | if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
| 941 : | y = - (y ^ ((1 << length) - 1)); | ||
| 942 : | } | ||
| 943 : | READ_MARKER(); | ||
| 944 : | |||
| 945 : | gmc_warp->duv[i].x = x; | ||
| 946 : | gmc_warp->duv[i].y = y; | ||
| 947 : | |||
| 948 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", i, x, y); |
| 949 : | edgomez | 851 | } |
| 950 : | |||
| 951 : | if (dec->sprite_brightness_change) | ||
| 952 : | { | ||
| 953 : | edgomez | 1382 | /* XXX: brightness_change_factor() */ |
| 954 : | edgomez | 851 | } |
| 955 : | if (dec->sprite_enable == SPRITE_STATIC) | ||
| 956 : | { | ||
| 957 : | edgomez | 1382 | /* XXX: todo */ |
| 958 : | edgomez | 851 | } |
| 959 : | |||
| 960 : | } | ||
| 961 : | |||
| 962 : | edgomez | 1382 | if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) /* vop_quant */ |
| 963 : | Isibaar | 157 | *quant = 1; |
| 964 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant); |
| 965 : | edgomez | 195 | |
| 966 : | if (coding_type != I_VOP) { | ||
| 967 : | edgomez | 1382 | *fcode_forward = BitstreamGetBits(bs, 3); /* fcode_forward */ |
| 968 : | DPRINTF(XVID_DEBUG_HEADER, "fcode_forward %i\n", *fcode_forward); | ||
| 969 : | Isibaar | 3 | } |
| 970 : | edgomez | 195 | |
| 971 : | if (coding_type == B_VOP) { | ||
| 972 : | edgomez | 1382 | *fcode_backward = BitstreamGetBits(bs, 3); /* fcode_backward */ |
| 973 : | DPRINTF(XVID_DEBUG_HEADER, "fcode_backward %i\n", *fcode_backward); | ||
| 974 : | Isibaar | 3 | } |
| 975 : | edgomez | 195 | if (!dec->scalability) { |
| 976 : | if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && | ||
| 977 : | (coding_type != I_VOP)) { | ||
| 978 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* vop_shape_coding_type */ |
| 979 : | chenm001 | 156 | } |
| 980 : | } | ||
| 981 : | Isibaar | 3 | return coding_type; |
| 982 : | suxen_drol | 252 | |
| 983 : | edgomez | 195 | } else if (start_code == USERDATA_START_CODE) { |
| 984 : | edgomez | 851 | char tmp[256]; |
| 985 : | int i, version, build; | ||
| 986 : | char packed; | ||
| 987 : | suxen_drol | 252 | |
| 988 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* user_data_start_code */ |
| 989 : | suxen_drol | 252 | |
| 990 : | edgomez | 1547 | memset(tmp, 0, 256); |
| 991 : | edgomez | 851 | tmp[0] = BitstreamShowBits(bs, 8); |
| 992 : | edgomez | 1382 | |
| 993 : | edgomez | 851 | for(i = 1; i < 256; i++){ |
| 994 : | tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF); | ||
| 995 : | edgomez | 1382 | |
| 996 : | if(tmp[i] == 0) | ||
| 997 : | edgomez | 851 | break; |
| 998 : | edgomez | 1382 | |
| 999 : | edgomez | 851 | BitstreamSkip(bs, 8); |
| 1000 : | } | ||
| 1001 : | suxen_drol | 252 | |
| 1002 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s\n", tmp); |
| 1003 : | |||
| 1004 : | Isibaar | 1055 | /* read xvid bitstream version */ |
| 1005 : | if(strncmp(tmp, "XviD", 4) == 0) { | ||
| 1006 : | edgomez | 1382 | if (tmp[strlen(tmp)-1] == 'C') { |
| 1007 : | sscanf(tmp, "XviD%dC", &dec->bs_version); | ||
| 1008 : | dec->cartoon_mode = 1; | ||
| 1009 : | } | ||
| 1010 : | else | ||
| 1011 : | sscanf(tmp, "XviD%d", &dec->bs_version); | ||
| 1012 : | |||
| 1013 : | edgomez | 1466 | DPRINTF(XVID_DEBUG_HEADER, "xvid bitstream version=%i\n", dec->bs_version); |
| 1014 : | Isibaar | 1055 | } |
| 1015 : | edgomez | 851 | |
| 1016 : | /* divx detection */ | ||
| 1017 : | i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed); | ||
| 1018 : | if (i < 2) | ||
| 1019 : | i = sscanf(tmp, "DivX%db%d%c", &version, &build, &packed); | ||
| 1020 : | edgomez | 1382 | |
| 1021 : | edgomez | 851 | if (i >= 2) |
| 1022 : | { | ||
| 1023 : | dec->packed_mode = (i == 3 && packed == 'p'); | ||
| 1024 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "divx version=%i, build=%i packed=%i\n", |
| 1025 : | edgomez | 851 | version, build, dec->packed_mode); |
| 1026 : | } | ||
| 1027 : | |||
| 1028 : | Isibaar | 1891 | if ((dec->bs_version == 0) && (build > 0) && |
| 1029 : | (build != 1393)) { /* non-xvid stream with xvid fourcc */ | ||
| 1030 : | dec->bs_version = 0xffff; | ||
| 1031 : | } | ||
| 1032 : | |||
| 1033 : | edgomez | 1382 | } else /* start_code == ? */ |
| 1034 : | Isibaar | 3 | { |
| 1035 : | edgomez | 195 | if (BitstreamShowBits(bs, 24) == 0x000001) { |
| 1036 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<unknown: %x>\n", BitstreamShowBits(bs, 32)); |
| 1037 : | Isibaar | 3 | } |
| 1038 : | BitstreamSkip(bs, 8); | ||
| 1039 : | } | ||
| 1040 : | } | ||
| 1041 : | |||
| 1042 : | edgomez | 1382 | #if 0 |
| 1043 : | DPRINTF("*** WARNING: no vop_start_code found"); | ||
| 1044 : | #endif | ||
| 1045 : | edgomez | 195 | return -1; /* ignore it */ |
| 1046 : | Isibaar | 3 | } |
| 1047 : | |||
| 1048 : | |||
| 1049 : | /* write custom quant matrix */ | ||
| 1050 : | |||
| 1051 : | edgomez | 195 | static void |
| 1052 : | bs_put_matrix(Bitstream * bs, | ||
| 1053 : | edgomez | 1382 | const uint16_t * matrix) |
| 1054 : | Isibaar | 3 | { |
| 1055 : | int i, j; | ||
| 1056 : | const int last = matrix[scan_tables[0][63]]; | ||
| 1057 : | |||
| 1058 : | suxen_drol | 233 | for (j = 63; j > 0 && matrix[scan_tables[0][j - 1]] == last; j--); |
| 1059 : | Isibaar | 3 | |
| 1060 : | edgomez | 195 | for (i = 0; i <= j; i++) { |
| 1061 : | Isibaar | 3 | BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
| 1062 : | } | ||
| 1063 : | |||
| 1064 : | edgomez | 195 | if (j < 63) { |
| 1065 : | Isibaar | 3 | BitstreamPutBits(bs, 0, 8); |
| 1066 : | } | ||
| 1067 : | } | ||
| 1068 : | |||
| 1069 : | |||
| 1070 : | /* | ||
| 1071 : | write vol header | ||
| 1072 : | */ | ||
| 1073 : | edgomez | 195 | void |
| 1074 : | BitstreamWriteVolHeader(Bitstream * const bs, | ||
| 1075 : | const MBParam * pParam, | ||
| 1076 : | Isibaar | 1913 | const FRAMEINFO * const frame, |
| 1077 : | const int num_slices) | ||
| 1078 : | Isibaar | 3 | { |
| 1079 : | edgomez | 851 | static const unsigned int vo_id = 0; |
| 1080 : | static const unsigned int vol_id = 0; | ||
| 1081 : | edgomez | 1382 | int vol_ver_id = 1; |
| 1082 : | int vol_type_ind = VIDOBJLAY_TYPE_SIMPLE; | ||
| 1083 : | int vol_profile = pParam->profile; | ||
| 1084 : | edgomez | 851 | |
| 1085 : | edgomez | 1382 | if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
| 1086 : | Isibaar | 1644 | (pParam->vol_flags & XVID_VOL_GMC)) |
| 1087 : | edgomez | 851 | vol_ver_id = 2; |
| 1088 : | |||
| 1089 : | suxen_drol | 1610 | if ((pParam->vol_flags & (XVID_VOL_MPEGQUANT|XVID_VOL_QUARTERPEL|XVID_VOL_GMC|XVID_VOL_INTERLACING)) || |
| 1090 : | pParam->max_bframes>0) { | ||
| 1091 : | edgomez | 1382 | vol_type_ind = VIDOBJLAY_TYPE_ASP; |
| 1092 : | } | ||
| 1093 : | edgomez | 851 | |
| 1094 : | edgomez | 1382 | /* visual_object_sequence_start_code */ |
| 1095 : | #if 0 | ||
| 1096 : | BitstreamPad(bs); | ||
| 1097 : | #endif | ||
| 1098 : | edgomez | 851 | |
| 1099 : | edgomez | 1382 | /* |
| 1100 : | * no padding here, anymore. You have to make sure that you are | ||
| 1101 : | * byte aligned, and that always 1-8 padding bits have been written | ||
| 1102 : | */ | ||
| 1103 : | |||
| 1104 : | if (!vol_profile) { | ||
| 1105 : | /* Profile was not set by client app, use the more permissive profile | ||
| 1106 : | * compatible with the vol_type_id */ | ||
| 1107 : | switch(vol_type_ind) { | ||
| 1108 : | case VIDOBJLAY_TYPE_ASP: | ||
| 1109 : | vol_profile = 0xf5; /* ASP level 5 */ | ||
| 1110 : | break; | ||
| 1111 : | case VIDOBJLAY_TYPE_ART_SIMPLE: | ||
| 1112 : | vol_profile = 0x94; /* ARTS level 4 */ | ||
| 1113 : | break; | ||
| 1114 : | default: | ||
| 1115 : | vol_profile = 0x03; /* Simple level 3 */ | ||
| 1116 : | break; | ||
| 1117 : | } | ||
| 1118 : | } | ||
| 1119 : | |||
| 1120 : | /* Write the VOS header */ | ||
| 1121 : | edgomez | 851 | BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32); |
| 1122 : | edgomez | 1382 | BitstreamPutBits(bs, vol_profile, 8); /* profile_and_level_indication */ |
| 1123 : | edgomez | 851 | |
| 1124 : | edgomez | 1382 | |
| 1125 : | /* visual_object_start_code */ | ||
| 1126 : | edgomez | 195 | BitstreamPad(bs); |
| 1127 : | edgomez | 851 | BitstreamPutBits(bs, VISOBJ_START_CODE, 32); |
| 1128 : | edgomez | 1382 | BitstreamPutBits(bs, 0, 1); /* is_visual_object_identifier */ |
| 1129 : | edgomez | 1098 | |
| 1130 : | /* Video type */ | ||
| 1131 : | edgomez | 1382 | BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); /* visual_object_type */ |
| 1132 : | edgomez | 1098 | BitstreamPutBit(bs, 0); /* video_signal_type */ |
| 1133 : | |||
| 1134 : | edgomez | 1382 | /* video object_start_code & vo_id */ |
| 1135 : | BitstreamPadAlways(bs); /* next_start_code() */ | ||
| 1136 : | edgomez | 851 | BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32); |
| 1137 : | Isibaar | 3 | |
| 1138 : | edgomez | 1382 | /* video_object_layer_start_code & vol_id */ |
| 1139 : | edgomez | 851 | BitstreamPad(bs); |
| 1140 : | BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32); | ||
| 1141 : | Isibaar | 3 | |
| 1142 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* random_accessible_vol */ |
| 1143 : | BitstreamPutBits(bs, vol_type_ind, 8); /* video_object_type_indication */ | ||
| 1144 : | suxen_drol | 164 | |
| 1145 : | edgomez | 1382 | if (vol_ver_id == 1) { |
| 1146 : | BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */ | ||
| 1147 : | } else { | ||
| 1148 : | BitstreamPutBit(bs, 1); /* is_object_layer_identified */ | ||
| 1149 : | BitstreamPutBits(bs, vol_ver_id, 4); /* vol_ver_id == 2 */ | ||
| 1150 : | BitstreamPutBits(bs, 4, 3); /* vol_ver_priority (1==highest, 7==lowest) */ | ||
| 1151 : | edgomez | 851 | } |
| 1152 : | edgomez | 1382 | |
| 1153 : | /* Aspect ratio */ | ||
| 1154 : | BitstreamPutBits(bs, pParam->par, 4); /* aspect_ratio_info (1=1:1) */ | ||
| 1155 : | if(pParam->par == XVID_PAR_EXT) { | ||
| 1156 : | BitstreamPutBits(bs, pParam->par_width, 8); | ||
| 1157 : | BitstreamPutBits(bs, pParam->par_height, 8); | ||
| 1158 : | edgomez | 851 | } |
| 1159 : | chl | 387 | |
| 1160 : | edgomez | 1382 | BitstreamPutBit(bs, 1); /* vol_control_parameters */ |
| 1161 : | BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ | ||
| 1162 : | edgomez | 487 | |
| 1163 : | edgomez | 851 | if (pParam->max_bframes > 0) { |
| 1164 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* low_delay */ |
| 1165 : | edgomez | 851 | } else |
| 1166 : | { | ||
| 1167 : | edgomez | 1382 | BitstreamPutBit(bs, 1); /* low_delay */ |
| 1168 : | edgomez | 851 | } |
| 1169 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* vbv_parameters (0=not given) */ |
| 1170 : | Isibaar | 3 | |
| 1171 : | edgomez | 1382 | BitstreamPutBits(bs, 0, 2); /* video_object_layer_shape (0=rectangular) */ |
| 1172 : | edgomez | 851 | |
| 1173 : | Isibaar | 3 | WRITE_MARKER(); |
| 1174 : | edgomez | 195 | |
| 1175 : | edgomez | 1382 | /* |
| 1176 : | * time_inc_resolution; ignored by current decore versions | ||
| 1177 : | * eg. 2fps res=2 inc=1 | ||
| 1178 : | * 25fps res=25 inc=1 | ||
| 1179 : | * 29.97fps res=30000 inc=1001 | ||
| 1180 : | edgomez | 195 | */ |
| 1181 : | suxen_drol | 163 | BitstreamPutBits(bs, pParam->fbase, 16); |
| 1182 : | Isibaar | 3 | |
| 1183 : | WRITE_MARKER(); | ||
| 1184 : | |||
| 1185 : | Isibaar | 1627 | if (pParam->fincr>0) { |
| 1186 : | BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ | ||
| 1187 : | BitstreamPutBits(bs, pParam->fincr, MAX(log2bin(pParam->fbase-1),1)); /* fixed_vop_time_increment */ | ||
| 1188 : | }else{ | ||
| 1189 : | BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */ | ||
| 1190 : | } | ||
| 1191 : | Isibaar | 3 | |
| 1192 : | WRITE_MARKER(); | ||
| 1193 : | edgomez | 1382 | BitstreamPutBits(bs, pParam->width, 13); /* width */ |
| 1194 : | Isibaar | 3 | WRITE_MARKER(); |
| 1195 : | edgomez | 1382 | BitstreamPutBits(bs, pParam->height, 13); /* height */ |
| 1196 : | Isibaar | 3 | WRITE_MARKER(); |
| 1197 : | edgomez | 195 | |
| 1198 : | edgomez | 1382 | BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_INTERLACING); /* interlace */ |
| 1199 : | BitstreamPutBit(bs, 1); /* obmc_disable (overlapped block motion compensation) */ | ||
| 1200 : | Isibaar | 3 | |
| 1201 : | edgomez | 1382 | if (vol_ver_id != 1) |
| 1202 : | { if ((pParam->vol_flags & XVID_VOL_GMC)) | ||
| 1203 : | { BitstreamPutBits(bs, 2, 2); /* sprite_enable=='GMC' */ | ||
| 1204 : | BitstreamPutBits(bs, 3, 6); /* no_of_sprite_warping_points */ | ||
| 1205 : | BitstreamPutBits(bs, 3, 2); /* sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 */ | ||
| 1206 : | BitstreamPutBit(bs, 0); /* sprite_brightness_change (not supported) */ | ||
| 1207 : | edgomez | 851 | |
| 1208 : | edgomez | 1382 | /* |
| 1209 : | * currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3 | ||
| 1210 : | * for DivX5 compatability | ||
| 1211 : | */ | ||
| 1212 : | edgomez | 851 | |
| 1213 : | } else | ||
| 1214 : | edgomez | 1382 | BitstreamPutBits(bs, 0, 2); /* sprite_enable==off */ |
| 1215 : | edgomez | 851 | } |
| 1216 : | else | ||
| 1217 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* sprite_enable==off */ |
| 1218 : | edgomez | 851 | |
| 1219 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* not_8_bit */ |
| 1220 : | edgomez | 851 | |
| 1221 : | edgomez | 1382 | /* quant_type 0=h.263 1=mpeg4(quantizer tables) */ |
| 1222 : | BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT); | ||
| 1223 : | edgomez | 195 | |
| 1224 : | edgomez | 1382 | if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) { |
| 1225 : | BitstreamPutBit(bs, is_custom_intra_matrix(pParam->mpeg_quant_matrices)); /* load_intra_quant_mat */ | ||
| 1226 : | if(is_custom_intra_matrix(pParam->mpeg_quant_matrices)) | ||
| 1227 : | bs_put_matrix(bs, get_intra_matrix(pParam->mpeg_quant_matrices)); | ||
| 1228 : | Isibaar | 3 | |
| 1229 : | edgomez | 1382 | BitstreamPutBit(bs, is_custom_inter_matrix(pParam->mpeg_quant_matrices)); /* load_inter_quant_mat */ |
| 1230 : | if(is_custom_inter_matrix(pParam->mpeg_quant_matrices)) | ||
| 1231 : | bs_put_matrix(bs, get_inter_matrix(pParam->mpeg_quant_matrices)); | ||
| 1232 : | Isibaar | 3 | } |
| 1233 : | |||
| 1234 : | edgomez | 851 | if (vol_ver_id != 1) { |
| 1235 : | edgomez | 1382 | if ((pParam->vol_flags & XVID_VOL_QUARTERPEL)) |
| 1236 : | BitstreamPutBit(bs, 1); /* quarterpel */ | ||
| 1237 : | edgomez | 851 | else |
| 1238 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* no quarterpel */ |
| 1239 : | edgomez | 851 | } |
| 1240 : | |||
| 1241 : | edgomez | 1382 | BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ |
| 1242 : | Isibaar | 1913 | |
| 1243 : | if (num_slices > 1) | ||
| 1244 : | BitstreamPutBit(bs, 0); /* resync_marker_enabled */ | ||
| 1245 : | else | ||
| 1246 : | BitstreamPutBit(bs, 1); /* resync_marker_disabled */ | ||
| 1247 : | |||
| 1248 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* data_partitioned */ |
| 1249 : | edgomez | 851 | |
| 1250 : | edgomez | 1382 | if (vol_ver_id != 1) { |
| 1251 : | BitstreamPutBit(bs, 0); /* newpred_enable */ | ||
| 1252 : | Isibaar | 1644 | BitstreamPutBit(bs, 0); /* reduced_resolution_vop_enabled */ |
| 1253 : | edgomez | 851 | } |
| 1254 : | |||
| 1255 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* scalability */ |
| 1256 : | edgomez | 1098 | |
| 1257 : | edgomez | 1382 | BitstreamPadAlways(bs); /* next_start_code(); */ |
| 1258 : | |||
| 1259 : | suxen_drol | 1607 | /* divx5 userdata string */ |
| 1260 : | Skal | 1617 | #define DIVX5_ID ((char *)"DivX503b1393") |
| 1261 : | suxen_drol | 1607 | if ((pParam->global_flags & XVID_GLOBAL_DIVX5_USERDATA)) { |
| 1262 : | Isibaar | 1928 | BitstreamWriteUserData(bs, DIVX5_ID, (uint32_t)strlen(DIVX5_ID)); |
| 1263 : | suxen_drol | 1607 | if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) |
| 1264 : | BitstreamPutBits(bs, 'p', 8); | ||
| 1265 : | edgomez | 851 | } |
| 1266 : | |||
| 1267 : | /* xvid id */ | ||
| 1268 : | edgomez | 1382 | { |
| 1269 : | edgomez | 1451 | const char xvid_user_format[] = "XviD%04d%c"; |
| 1270 : | char xvid_user_data[100]; | ||
| 1271 : | sprintf(xvid_user_data, | ||
| 1272 : | xvid_user_format, | ||
| 1273 : | XVID_BS_VERSION, | ||
| 1274 : | (frame->vop_flags & XVID_VOP_CARTOON)?'C':'\0'); | ||
| 1275 : | Isibaar | 1928 | BitstreamWriteUserData(bs, xvid_user_data, (uint32_t)strlen(xvid_user_data)); |
| 1276 : | edgomez | 1382 | } |
| 1277 : | Isibaar | 3 | } |
| 1278 : | |||
| 1279 : | |||
| 1280 : | /* | ||
| 1281 : | write vop header | ||
| 1282 : | */ | ||
| 1283 : | edgomez | 195 | void |
| 1284 : | edgomez | 851 | BitstreamWriteVopHeader( |
| 1285 : | Bitstream * const bs, | ||
| 1286 : | edgomez | 195 | const MBParam * pParam, |
| 1287 : | edgomez | 851 | const FRAMEINFO * const frame, |
| 1288 : | edgomez | 1382 | int vop_coded, |
| 1289 : | unsigned int quant) | ||
| 1290 : | Isibaar | 3 | { |
| 1291 : | suxen_drol | 152 | uint32_t i; |
| 1292 : | chl | 387 | |
| 1293 : | edgomez | 1382 | #if 0 |
| 1294 : | BitstreamPad(bs); | ||
| 1295 : | #endif | ||
| 1296 : | edgomez | 851 | |
| 1297 : | edgomez | 1382 | /* |
| 1298 : | * no padding here, anymore. You have to make sure that you are | ||
| 1299 : | * byte aligned, and that always 1-8 padding bits have been written | ||
| 1300 : | */ | ||
| 1301 : | |||
| 1302 : | edgomez | 195 | BitstreamPutBits(bs, VOP_START_CODE, 32); |
| 1303 : | Isibaar | 3 | |
| 1304 : | edgomez | 195 | BitstreamPutBits(bs, frame->coding_type, 2); |
| 1305 : | edgomez | 1382 | #if 0 |
| 1306 : | DPRINTF(XVID_DEBUG_HEADER, "coding_type = %i\n", frame->coding_type); | ||
| 1307 : | #endif | ||
| 1308 : | edgomez | 195 | |
| 1309 : | for (i = 0; i < frame->seconds; i++) { | ||
| 1310 : | suxen_drol | 152 | BitstreamPutBit(bs, 1); |
| 1311 : | } | ||
| 1312 : | BitstreamPutBit(bs, 0); | ||
| 1313 : | Isibaar | 3 | |
| 1314 : | WRITE_MARKER(); | ||
| 1315 : | |||
| 1316 : | edgomez | 1382 | /* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
| 1317 : | edgomez | 1451 | BitstreamPutBits(bs, frame->ticks, MAX(log2bin(pParam->fbase-1), 1)); |
| 1318 : | edgomez | 1382 | #if 0 |
| 1319 : | DPRINTF("[%i:%i] %c", | ||
| 1320 : | frame->seconds, frame->ticks, | ||
| 1321 : | frame->coding_type == I_VOP ? 'I' : | ||
| 1322 : | frame->coding_type == P_VOP ? 'P' : | ||
| 1323 : | frame->coding_type == S_VOP ? 'S' : 'B'); | ||
| 1324 : | #endif | ||
| 1325 : | Isibaar | 3 | |
| 1326 : | WRITE_MARKER(); | ||
| 1327 : | |||
| 1328 : | suxen_drol | 229 | if (!vop_coded) { |
| 1329 : | BitstreamPutBits(bs, 0, 1); | ||
| 1330 : | edgomez | 1098 | #if 0 |
| 1331 : | BitstreamPadAlways(bs); /* next_start_code() */ | ||
| 1332 : | #endif | ||
| 1333 : | /* NB: It's up to the function caller to write the next_start_code(). | ||
| 1334 : | * At the moment encoder.c respects that requisite because a VOP | ||
| 1335 : | * always ends with a next_start_code either if it's coded or not | ||
| 1336 : | * and encoder.c terminates a frame with a next_start_code in whatever | ||
| 1337 : | * case */ | ||
| 1338 : | suxen_drol | 229 | return; |
| 1339 : | } | ||
| 1340 : | |||
| 1341 : | edgomez | 1382 | BitstreamPutBits(bs, 1, 1); /* vop_coded */ |
| 1342 : | Isibaar | 3 | |
| 1343 : | edgomez | 851 | if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
| 1344 : | suxen_drol | 136 | BitstreamPutBits(bs, frame->rounding_type, 1); |
| 1345 : | Isibaar | 3 | |
| 1346 : | edgomez | 1382 | BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
| 1347 : | edgomez | 851 | |
| 1348 : | edgomez | 1382 | if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
| 1349 : | BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_TOPFIELDFIRST)); | ||
| 1350 : | BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_ALTERNATESCAN)); | ||
| 1351 : | h | 69 | } |
| 1352 : | edgomez | 1382 | |
| 1353 : | edgomez | 851 | if (frame->coding_type == S_VOP) { |
| 1354 : | edgomez | 1382 | if (1) { /* no_of_sprite_warping_points>=1 (we use 2!) */ |
| 1355 : | edgomez | 851 | int k; |
| 1356 : | edgomez | 1382 | for (k=0;k<3;k++) |
| 1357 : | edgomez | 851 | { |
| 1358 : | edgomez | 1382 | bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); /* du[k] */ |
| 1359 : | edgomez | 851 | WRITE_MARKER(); |
| 1360 : | edgomez | 1382 | |
| 1361 : | bs_put_spritetrajectory(bs, frame->warp.duv[k].y ); /* dv[k] */ | ||
| 1362 : | edgomez | 851 | WRITE_MARKER(); |
| 1363 : | h | 69 | |
| 1364 : | edgomez | 1382 | if ((frame->vol_flags & XVID_VOL_QUARTERPEL)) |
| 1365 : | edgomez | 851 | { |
| 1366 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i) *QPEL*\n", k, frame->warp.duv[k].x/2, frame->warp.duv[k].y/2); |
| 1367 : | edgomez | 851 | } |
| 1368 : | else | ||
| 1369 : | { | ||
| 1370 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", k, frame->warp.duv[k].x, frame->warp.duv[k].y); |
| 1371 : | edgomez | 851 | } |
| 1372 : | } | ||
| 1373 : | } | ||
| 1374 : | } | ||
| 1375 : | edgomez | 195 | |
| 1376 : | edgomez | 851 | |
| 1377 : | edgomez | 1382 | #if 0 |
| 1378 : | DPRINTF(XVID_DEBUG_HEADER, "quant = %i\n", quant); | ||
| 1379 : | #endif | ||
| 1380 : | edgomez | 851 | |
| 1381 : | edgomez | 1382 | BitstreamPutBits(bs, quant, 5); /* quantizer */ |
| 1382 : | |||
| 1383 : | suxen_drol | 136 | if (frame->coding_type != I_VOP) |
| 1384 : | edgomez | 1382 | BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ |
| 1385 : | suxen_drol | 152 | |
| 1386 : | if (frame->coding_type == B_VOP) | ||
| 1387 : | edgomez | 1382 | BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */ |
| 1388 : | suxen_drol | 152 | |
| 1389 : | Isibaar | 3 | } |
| 1390 : | edgomez | 851 | |
| 1391 : | edgomez | 1382 | void |
| 1392 : | BitstreamWriteUserData(Bitstream * const bs, | ||
| 1393 : | Skal | 1617 | const char *data, |
| 1394 : | const unsigned int length) | ||
| 1395 : | edgomez | 851 | { |
| 1396 : | Isibaar | 1928 | unsigned int i; |
| 1397 : | edgomez | 851 | |
| 1398 : | BitstreamPad(bs); | ||
| 1399 : | BitstreamPutBits(bs, USERDATA_START_CODE, 32); | ||
| 1400 : | |||
| 1401 : | for (i = 0; i < length; i++) { | ||
| 1402 : | BitstreamPutBits(bs, data[i], 8); | ||
| 1403 : | } | ||
| 1404 : | |||
| 1405 : | } | ||
| 1406 : | Skal | 1616 | |
| 1407 : | /* | ||
| 1408 : | * Group of VOP | ||
| 1409 : | */ | ||
| 1410 : | void | ||
| 1411 : | BitstreamWriteGroupOfVopHeader(Bitstream * const bs, | ||
| 1412 : | const MBParam * pParam, | ||
| 1413 : | uint32_t is_closed_gov) | ||
| 1414 : | { | ||
| 1415 : | int64_t time = (pParam->m_stamp + (pParam->fbase/2)) / pParam->fbase; | ||
| 1416 : | int hours, minutes, seconds; | ||
| 1417 : | |||
| 1418 : | /* compute time_code */ | ||
| 1419 : | seconds = time % 60; time /= 60; | ||
| 1420 : | minutes = time % 60; time /= 60; | ||
| 1421 : | hours = time % 24; /* don't overflow */ | ||
| 1422 : | |||
| 1423 : | BitstreamPutBits(bs, GRPOFVOP_START_CODE, 32); | ||
| 1424 : | BitstreamPutBits(bs, hours, 5); | ||
| 1425 : | BitstreamPutBits(bs, minutes, 6); | ||
| 1426 : | BitstreamPutBit(bs, 1); | ||
| 1427 : | BitstreamPutBits(bs, seconds, 6); | ||
| 1428 : | BitstreamPutBits(bs, is_closed_gov, 1); | ||
| 1429 : | BitstreamPutBits(bs, 0, 1); /* broken_link */ | ||
| 1430 : | } | ||
| 1431 : | |||
| 1432 : | /* | ||
| 1433 : | * End of Sequence | ||
| 1434 : | */ | ||
| 1435 : | void | ||
| 1436 : | BitstreamWriteEndOfSequence(Bitstream * const bs) | ||
| 1437 : | { | ||
| 1438 : | BitstreamPadAlways(bs); | ||
| 1439 : | BitstreamPutBits(bs, VISOBJSEQ_STOP_CODE, 32); | ||
| 1440 : | } | ||
| 1441 : | |||
| 1442 : | /* | ||
| 1443 : | * Video Packet (resync marker) | ||
| 1444 : | */ | ||
| 1445 : | |||
| 1446 : | void write_video_packet_header(Bitstream * const bs, | ||
| 1447 : | const MBParam * pParam, | ||
| 1448 : | const FRAMEINFO * const frame, | ||
| 1449 : | int mbnum) | ||
| 1450 : | { | ||
| 1451 : | const int mbnum_bits = log2bin(pParam->mb_width * pParam->mb_height - 1); | ||
| 1452 : | uint32_t nbitsresyncmarker; | ||
| 1453 : | Skal | 1617 | |
| 1454 : | if (frame->coding_type == I_VOP) | ||
| 1455 : | nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER; /* 16 zeros followed by a 1. */ | ||
| 1456 : | Isibaar | 1913 | else if (frame->coding_type == B_VOP) /* B_VOP */ |
| 1457 : | nbitsresyncmarker = MAX(NUMBITS_VP_RESYNC_MARKER+1, NUMBITS_VP_RESYNC_MARKER + MAX(frame->fcode, frame->bcode) - 1); | ||
| 1458 : | else /*(frame->coding_type == P_VOP)*/ | ||
| 1459 : | nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER + frame->fcode - 1; | ||
| 1460 : | Skal | 1617 | |
| 1461 : | Skal | 1616 | BitstreamPutBits(bs, RESYNC_MARKER, nbitsresyncmarker); |
| 1462 : | BitstreamPutBits(bs, mbnum, mbnum_bits); | ||
| 1463 : | BitstreamPutBits(bs, frame->quant, 5); | ||
| 1464 : | BitstreamPutBit(bs, 0); /* hec */ | ||
| 1465 : | } |
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