| 1 | /* |
| 2 | * RoQ Video Encoder. |
| 3 | * |
| 4 | * Copyright (C) 2007 Vitor Sessak <vitor1001@gmail.com> |
| 5 | * Copyright (C) 2004-2007 Eric Lasota |
| 6 | * Based on RoQ specs (C) 2001 Tim Ferguson |
| 7 | * |
| 8 | * This file is part of FFmpeg. |
| 9 | * |
| 10 | * FFmpeg is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU Lesser General Public |
| 12 | * License as published by the Free Software Foundation; either |
| 13 | * version 2.1 of the License, or (at your option) any later version. |
| 14 | * |
| 15 | * FFmpeg is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 18 | * Lesser General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU Lesser General Public |
| 21 | * License along with FFmpeg; if not, write to the Free Software |
| 22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 23 | */ |
| 24 | |
| 25 | /** |
| 26 | * @file |
| 27 | * id RoQ encoder by Vitor. Based on the Switchblade3 library and the |
| 28 | * Switchblade3 FFmpeg glue by Eric Lasota. |
| 29 | */ |
| 30 | |
| 31 | /* |
| 32 | * COSTS: |
| 33 | * Level 1: |
| 34 | * SKIP - 2 bits |
| 35 | * MOTION - 2 + 8 bits |
| 36 | * CODEBOOK - 2 + 8 bits |
| 37 | * SUBDIVIDE - 2 + combined subcel cost |
| 38 | * |
| 39 | * Level 2: |
| 40 | * SKIP - 2 bits |
| 41 | * MOTION - 2 + 8 bits |
| 42 | * CODEBOOK - 2 + 8 bits |
| 43 | * SUBDIVIDE - 2 + 4*8 bits |
| 44 | * |
| 45 | * Maximum cost: 138 bits per cel |
| 46 | * |
| 47 | * Proper evaluation requires LCD fraction comparison, which requires |
| 48 | * Squared Error (SE) loss * savings increase |
| 49 | * |
| 50 | * Maximum savings increase: 136 bits |
| 51 | * Maximum SE loss without overflow: 31580641 |
| 52 | * Components in 8x8 supercel: 192 |
| 53 | * Maximum SE precision per component: 164482 |
| 54 | * >65025, so no truncation is needed (phew) |
| 55 | */ |
| 56 | |
| 57 | #include <string.h> |
| 58 | |
| 59 | #include "libavutil/attributes.h" |
| 60 | #include "libavutil/opt.h" |
| 61 | #include "roqvideo.h" |
| 62 | #include "bytestream.h" |
| 63 | #include "elbg.h" |
| 64 | #include "internal.h" |
| 65 | #include "mathops.h" |
| 66 | |
| 67 | #define CHROMA_BIAS 1 |
| 68 | |
| 69 | /** |
| 70 | * Maximum number of generated 4x4 codebooks. Can't be 256 to workaround a |
| 71 | * Quake 3 bug. |
| 72 | */ |
| 73 | #define MAX_CBS_4x4 256 |
| 74 | |
| 75 | #define MAX_CBS_2x2 256 ///< Maximum number of 2x2 codebooks. |
| 76 | |
| 77 | /* The cast is useful when multiplying it by INT_MAX */ |
| 78 | #define ROQ_LAMBDA_SCALE ((uint64_t) FF_LAMBDA_SCALE) |
| 79 | |
| 80 | /* Macroblock support functions */ |
| 81 | static void unpack_roq_cell(roq_cell *cell, uint8_t u[4*3]) |
| 82 | { |
| 83 | memcpy(u , cell->y, 4); |
| 84 | memset(u+4, cell->u, 4); |
| 85 | memset(u+8, cell->v, 4); |
| 86 | } |
| 87 | |
| 88 | static void unpack_roq_qcell(uint8_t cb2[], roq_qcell *qcell, uint8_t u[4*4*3]) |
| 89 | { |
| 90 | int i,cp; |
| 91 | static const int offsets[4] = {0, 2, 8, 10}; |
| 92 | |
| 93 | for (cp=0; cp<3; cp++) |
| 94 | for (i=0; i<4; i++) { |
| 95 | u[4*4*cp + offsets[i] ] = cb2[qcell->idx[i]*2*2*3 + 4*cp ]; |
| 96 | u[4*4*cp + offsets[i]+1] = cb2[qcell->idx[i]*2*2*3 + 4*cp+1]; |
| 97 | u[4*4*cp + offsets[i]+4] = cb2[qcell->idx[i]*2*2*3 + 4*cp+2]; |
| 98 | u[4*4*cp + offsets[i]+5] = cb2[qcell->idx[i]*2*2*3 + 4*cp+3]; |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | |
| 103 | static void enlarge_roq_mb4(uint8_t base[3*16], uint8_t u[3*64]) |
| 104 | { |
| 105 | int x,y,cp; |
| 106 | |
| 107 | for(cp=0; cp<3; cp++) |
| 108 | for(y=0; y<8; y++) |
| 109 | for(x=0; x<8; x++) |
| 110 | *u++ = base[(y/2)*4 + (x/2) + 16*cp]; |
| 111 | } |
| 112 | |
| 113 | static inline int square(int x) |
| 114 | { |
| 115 | return x*x; |
| 116 | } |
| 117 | |
| 118 | static inline int eval_sse(const uint8_t *a, const uint8_t *b, int count) |
| 119 | { |
| 120 | int diff=0; |
| 121 | |
| 122 | while(count--) |
| 123 | diff += square(*b++ - *a++); |
| 124 | |
| 125 | return diff; |
| 126 | } |
| 127 | |
| 128 | // FIXME Could use DSPContext.sse, but it is not so speed critical (used |
| 129 | // just for motion estimation). |
| 130 | static int block_sse(uint8_t * const *buf1, uint8_t * const *buf2, int x1, int y1, |
| 131 | int x2, int y2, const int *stride1, const int *stride2, int size) |
| 132 | { |
| 133 | int i, k; |
| 134 | int sse=0; |
| 135 | |
| 136 | for (k=0; k<3; k++) { |
| 137 | int bias = (k ? CHROMA_BIAS : 4); |
| 138 | for (i=0; i<size; i++) |
| 139 | sse += bias*eval_sse(buf1[k] + (y1+i)*stride1[k] + x1, |
| 140 | buf2[k] + (y2+i)*stride2[k] + x2, size); |
| 141 | } |
| 142 | |
| 143 | return sse; |
| 144 | } |
| 145 | |
| 146 | static int eval_motion_dist(RoqContext *enc, int x, int y, motion_vect vect, |
| 147 | int size) |
| 148 | { |
| 149 | int mx=vect.d[0]; |
| 150 | int my=vect.d[1]; |
| 151 | |
| 152 | if (mx < -7 || mx > 7) |
| 153 | return INT_MAX; |
| 154 | |
| 155 | if (my < -7 || my > 7) |
| 156 | return INT_MAX; |
| 157 | |
| 158 | mx += x; |
| 159 | my += y; |
| 160 | |
| 161 | if ((unsigned) mx > enc->width-size || (unsigned) my > enc->height-size) |
| 162 | return INT_MAX; |
| 163 | |
| 164 | return block_sse(enc->frame_to_enc->data, enc->last_frame->data, x, y, |
| 165 | mx, my, |
| 166 | enc->frame_to_enc->linesize, enc->last_frame->linesize, |
| 167 | size); |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * @return distortion between two macroblocks |
| 172 | */ |
| 173 | static inline int squared_diff_macroblock(uint8_t a[], uint8_t b[], int size) |
| 174 | { |
| 175 | int cp, sdiff=0; |
| 176 | |
| 177 | for(cp=0;cp<3;cp++) { |
| 178 | int bias = (cp ? CHROMA_BIAS : 4); |
| 179 | sdiff += bias*eval_sse(a, b, size*size); |
| 180 | a += size*size; |
| 181 | b += size*size; |
| 182 | } |
| 183 | |
| 184 | return sdiff; |
| 185 | } |
| 186 | |
| 187 | typedef struct |
| 188 | { |
| 189 | int eval_dist[4]; |
| 190 | int best_bit_use; |
| 191 | int best_coding; |
| 192 | |
| 193 | int subCels[4]; |
| 194 | motion_vect motion; |
| 195 | int cbEntry; |
| 196 | } SubcelEvaluation; |
| 197 | |
| 198 | typedef struct |
| 199 | { |
| 200 | int eval_dist[4]; |
| 201 | int best_coding; |
| 202 | |
| 203 | SubcelEvaluation subCels[4]; |
| 204 | |
| 205 | motion_vect motion; |
| 206 | int cbEntry; |
| 207 | |
| 208 | int sourceX, sourceY; |
| 209 | } CelEvaluation; |
| 210 | |
| 211 | typedef struct |
| 212 | { |
| 213 | int numCB4; |
| 214 | int numCB2; |
| 215 | int usedCB2[MAX_CBS_2x2]; |
| 216 | int usedCB4[MAX_CBS_4x4]; |
| 217 | uint8_t unpacked_cb2[MAX_CBS_2x2*2*2*3]; |
| 218 | uint8_t unpacked_cb4[MAX_CBS_4x4*4*4*3]; |
| 219 | uint8_t unpacked_cb4_enlarged[MAX_CBS_4x4*8*8*3]; |
| 220 | } RoqCodebooks; |
| 221 | |
| 222 | /** |
| 223 | * Temporary vars |
| 224 | */ |
| 225 | typedef struct RoqTempData |
| 226 | { |
| 227 | CelEvaluation *cel_evals; |
| 228 | |
| 229 | int f2i4[MAX_CBS_4x4]; |
| 230 | int i2f4[MAX_CBS_4x4]; |
| 231 | int f2i2[MAX_CBS_2x2]; |
| 232 | int i2f2[MAX_CBS_2x2]; |
| 233 | |
| 234 | int mainChunkSize; |
| 235 | |
| 236 | int numCB4; |
| 237 | int numCB2; |
| 238 | |
| 239 | RoqCodebooks codebooks; |
| 240 | |
| 241 | int *closest_cb2; |
| 242 | int used_option[4]; |
| 243 | } RoqTempdata; |
| 244 | |
| 245 | /** |
| 246 | * Initialize cel evaluators and set their source coordinates |
| 247 | */ |
| 248 | static void create_cel_evals(RoqContext *enc, RoqTempdata *tempData) |
| 249 | { |
| 250 | int n=0, x, y, i; |
| 251 | |
| 252 | tempData->cel_evals = av_malloc_array(enc->width*enc->height/64, sizeof(CelEvaluation)); |
| 253 | |
| 254 | /* Map to the ROQ quadtree order */ |
| 255 | for (y=0; y<enc->height; y+=16) |
| 256 | for (x=0; x<enc->width; x+=16) |
| 257 | for(i=0; i<4; i++) { |
| 258 | tempData->cel_evals[n ].sourceX = x + (i&1)*8; |
| 259 | tempData->cel_evals[n++].sourceY = y + (i&2)*4; |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | /** |
| 264 | * Get macroblocks from parts of the image |
| 265 | */ |
| 266 | static void get_frame_mb(const AVFrame *frame, int x, int y, uint8_t mb[], int dim) |
| 267 | { |
| 268 | int i, j, cp; |
| 269 | |
| 270 | for (cp=0; cp<3; cp++) { |
| 271 | int stride = frame->linesize[cp]; |
| 272 | for (i=0; i<dim; i++) |
| 273 | for (j=0; j<dim; j++) |
| 274 | *mb++ = frame->data[cp][(y+i)*stride + x + j]; |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | /** |
| 279 | * Find the codebook with the lowest distortion from an image |
| 280 | */ |
| 281 | static int index_mb(uint8_t cluster[], uint8_t cb[], int numCB, |
| 282 | int *outIndex, int dim) |
| 283 | { |
| 284 | int i, lDiff = INT_MAX, pick=0; |
| 285 | |
| 286 | /* Diff against the others */ |
| 287 | for (i=0; i<numCB; i++) { |
| 288 | int diff = squared_diff_macroblock(cluster, cb + i*dim*dim*3, dim); |
| 289 | if (diff < lDiff) { |
| 290 | lDiff = diff; |
| 291 | pick = i; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | *outIndex = pick; |
| 296 | return lDiff; |
| 297 | } |
| 298 | |
| 299 | #define EVAL_MOTION(MOTION) \ |
| 300 | do { \ |
| 301 | diff = eval_motion_dist(enc, j, i, MOTION, blocksize); \ |
| 302 | \ |
| 303 | if (diff < lowestdiff) { \ |
| 304 | lowestdiff = diff; \ |
| 305 | bestpick = MOTION; \ |
| 306 | } \ |
| 307 | } while(0) |
| 308 | |
| 309 | static void motion_search(RoqContext *enc, int blocksize) |
| 310 | { |
| 311 | static const motion_vect offsets[8] = { |
| 312 | {{ 0,-1}}, |
| 313 | {{ 0, 1}}, |
| 314 | {{-1, 0}}, |
| 315 | {{ 1, 0}}, |
| 316 | {{-1, 1}}, |
| 317 | {{ 1,-1}}, |
| 318 | {{-1,-1}}, |
| 319 | {{ 1, 1}}, |
| 320 | }; |
| 321 | |
| 322 | int diff, lowestdiff, oldbest; |
| 323 | int off[3]; |
| 324 | motion_vect bestpick = {{0,0}}; |
| 325 | int i, j, k, offset; |
| 326 | |
| 327 | motion_vect *last_motion; |
| 328 | motion_vect *this_motion; |
| 329 | motion_vect vect, vect2; |
| 330 | |
| 331 | int max=(enc->width/blocksize)*enc->height/blocksize; |
| 332 | |
| 333 | if (blocksize == 4) { |
| 334 | last_motion = enc->last_motion4; |
| 335 | this_motion = enc->this_motion4; |
| 336 | } else { |
| 337 | last_motion = enc->last_motion8; |
| 338 | this_motion = enc->this_motion8; |
| 339 | } |
| 340 | |
| 341 | for (i=0; i<enc->height; i+=blocksize) |
| 342 | for (j=0; j<enc->width; j+=blocksize) { |
| 343 | lowestdiff = eval_motion_dist(enc, j, i, (motion_vect) {{0,0}}, |
| 344 | blocksize); |
| 345 | bestpick.d[0] = 0; |
| 346 | bestpick.d[1] = 0; |
| 347 | |
| 348 | if (blocksize == 4) |
| 349 | EVAL_MOTION(enc->this_motion8[(i/8)*(enc->width/8) + j/8]); |
| 350 | |
| 351 | offset = (i/blocksize)*enc->width/blocksize + j/blocksize; |
| 352 | if (offset < max && offset >= 0) |
| 353 | EVAL_MOTION(last_motion[offset]); |
| 354 | |
| 355 | offset++; |
| 356 | if (offset < max && offset >= 0) |
| 357 | EVAL_MOTION(last_motion[offset]); |
| 358 | |
| 359 | offset = (i/blocksize + 1)*enc->width/blocksize + j/blocksize; |
| 360 | if (offset < max && offset >= 0) |
| 361 | EVAL_MOTION(last_motion[offset]); |
| 362 | |
| 363 | off[0]= (i/blocksize)*enc->width/blocksize + j/blocksize - 1; |
| 364 | off[1]= off[0] - enc->width/blocksize + 1; |
| 365 | off[2]= off[1] + 1; |
| 366 | |
| 367 | if (i) { |
| 368 | |
| 369 | for(k=0; k<2; k++) |
| 370 | vect.d[k]= mid_pred(this_motion[off[0]].d[k], |
| 371 | this_motion[off[1]].d[k], |
| 372 | this_motion[off[2]].d[k]); |
| 373 | |
| 374 | EVAL_MOTION(vect); |
| 375 | for(k=0; k<3; k++) |
| 376 | EVAL_MOTION(this_motion[off[k]]); |
| 377 | } else if(j) |
| 378 | EVAL_MOTION(this_motion[off[0]]); |
| 379 | |
| 380 | vect = bestpick; |
| 381 | |
| 382 | oldbest = -1; |
| 383 | while (oldbest != lowestdiff) { |
| 384 | oldbest = lowestdiff; |
| 385 | for (k=0; k<8; k++) { |
| 386 | vect2 = vect; |
| 387 | vect2.d[0] += offsets[k].d[0]; |
| 388 | vect2.d[1] += offsets[k].d[1]; |
| 389 | EVAL_MOTION(vect2); |
| 390 | } |
| 391 | vect = bestpick; |
| 392 | } |
| 393 | offset = (i/blocksize)*enc->width/blocksize + j/blocksize; |
| 394 | this_motion[offset] = bestpick; |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | /** |
| 399 | * Get distortion for all options available to a subcel |
| 400 | */ |
| 401 | static void gather_data_for_subcel(SubcelEvaluation *subcel, int x, |
| 402 | int y, RoqContext *enc, RoqTempdata *tempData) |
| 403 | { |
| 404 | uint8_t mb4[4*4*3]; |
| 405 | uint8_t mb2[2*2*3]; |
| 406 | int cluster_index; |
| 407 | int i, best_dist; |
| 408 | |
| 409 | static const int bitsUsed[4] = {2, 10, 10, 34}; |
| 410 | |
| 411 | if (enc->framesSinceKeyframe >= 1) { |
| 412 | subcel->motion = enc->this_motion4[y*enc->width/16 + x/4]; |
| 413 | |
| 414 | subcel->eval_dist[RoQ_ID_FCC] = |
| 415 | eval_motion_dist(enc, x, y, |
| 416 | enc->this_motion4[y*enc->width/16 + x/4], 4); |
| 417 | } else |
| 418 | subcel->eval_dist[RoQ_ID_FCC] = INT_MAX; |
| 419 | |
| 420 | if (enc->framesSinceKeyframe >= 2) |
| 421 | subcel->eval_dist[RoQ_ID_MOT] = block_sse(enc->frame_to_enc->data, |
| 422 | enc->current_frame->data, x, |
| 423 | y, x, y, |
| 424 | enc->frame_to_enc->linesize, |
| 425 | enc->current_frame->linesize, |
| 426 | 4); |
| 427 | else |
| 428 | subcel->eval_dist[RoQ_ID_MOT] = INT_MAX; |
| 429 | |
| 430 | cluster_index = y*enc->width/16 + x/4; |
| 431 | |
| 432 | get_frame_mb(enc->frame_to_enc, x, y, mb4, 4); |
| 433 | |
| 434 | subcel->eval_dist[RoQ_ID_SLD] = index_mb(mb4, |
| 435 | tempData->codebooks.unpacked_cb4, |
| 436 | tempData->codebooks.numCB4, |
| 437 | &subcel->cbEntry, 4); |
| 438 | |
| 439 | subcel->eval_dist[RoQ_ID_CCC] = 0; |
| 440 | |
| 441 | for(i=0;i<4;i++) { |
| 442 | subcel->subCels[i] = tempData->closest_cb2[cluster_index*4+i]; |
| 443 | |
| 444 | get_frame_mb(enc->frame_to_enc, x+2*(i&1), |
| 445 | y+(i&2), mb2, 2); |
| 446 | |
| 447 | subcel->eval_dist[RoQ_ID_CCC] += |
| 448 | squared_diff_macroblock(tempData->codebooks.unpacked_cb2 + subcel->subCels[i]*2*2*3, mb2, 2); |
| 449 | } |
| 450 | |
| 451 | best_dist = INT_MAX; |
| 452 | for (i=0; i<4; i++) |
| 453 | if (ROQ_LAMBDA_SCALE*subcel->eval_dist[i] + enc->lambda*bitsUsed[i] < |
| 454 | best_dist) { |
| 455 | subcel->best_coding = i; |
| 456 | subcel->best_bit_use = bitsUsed[i]; |
| 457 | best_dist = ROQ_LAMBDA_SCALE*subcel->eval_dist[i] + |
| 458 | enc->lambda*bitsUsed[i]; |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | /** |
| 463 | * Get distortion for all options available to a cel |
| 464 | */ |
| 465 | static void gather_data_for_cel(CelEvaluation *cel, RoqContext *enc, |
| 466 | RoqTempdata *tempData) |
| 467 | { |
| 468 | uint8_t mb8[8*8*3]; |
| 469 | int index = cel->sourceY*enc->width/64 + cel->sourceX/8; |
| 470 | int i, j, best_dist, divide_bit_use; |
| 471 | |
| 472 | int bitsUsed[4] = {2, 10, 10, 0}; |
| 473 | |
| 474 | if (enc->framesSinceKeyframe >= 1) { |
| 475 | cel->motion = enc->this_motion8[index]; |
| 476 | |
| 477 | cel->eval_dist[RoQ_ID_FCC] = |
| 478 | eval_motion_dist(enc, cel->sourceX, cel->sourceY, |
| 479 | enc->this_motion8[index], 8); |
| 480 | } else |
| 481 | cel->eval_dist[RoQ_ID_FCC] = INT_MAX; |
| 482 | |
| 483 | if (enc->framesSinceKeyframe >= 2) |
| 484 | cel->eval_dist[RoQ_ID_MOT] = block_sse(enc->frame_to_enc->data, |
| 485 | enc->current_frame->data, |
| 486 | cel->sourceX, cel->sourceY, |
| 487 | cel->sourceX, cel->sourceY, |
| 488 | enc->frame_to_enc->linesize, |
| 489 | enc->current_frame->linesize,8); |
| 490 | else |
| 491 | cel->eval_dist[RoQ_ID_MOT] = INT_MAX; |
| 492 | |
| 493 | get_frame_mb(enc->frame_to_enc, cel->sourceX, cel->sourceY, mb8, 8); |
| 494 | |
| 495 | cel->eval_dist[RoQ_ID_SLD] = |
| 496 | index_mb(mb8, tempData->codebooks.unpacked_cb4_enlarged, |
| 497 | tempData->codebooks.numCB4, &cel->cbEntry, 8); |
| 498 | |
| 499 | gather_data_for_subcel(cel->subCels + 0, cel->sourceX+0, cel->sourceY+0, enc, tempData); |
| 500 | gather_data_for_subcel(cel->subCels + 1, cel->sourceX+4, cel->sourceY+0, enc, tempData); |
| 501 | gather_data_for_subcel(cel->subCels + 2, cel->sourceX+0, cel->sourceY+4, enc, tempData); |
| 502 | gather_data_for_subcel(cel->subCels + 3, cel->sourceX+4, cel->sourceY+4, enc, tempData); |
| 503 | |
| 504 | cel->eval_dist[RoQ_ID_CCC] = 0; |
| 505 | divide_bit_use = 0; |
| 506 | for (i=0; i<4; i++) { |
| 507 | cel->eval_dist[RoQ_ID_CCC] += |
| 508 | cel->subCels[i].eval_dist[cel->subCels[i].best_coding]; |
| 509 | divide_bit_use += cel->subCels[i].best_bit_use; |
| 510 | } |
| 511 | |
| 512 | best_dist = INT_MAX; |
| 513 | bitsUsed[3] = 2 + divide_bit_use; |
| 514 | |
| 515 | for (i=0; i<4; i++) |
| 516 | if (ROQ_LAMBDA_SCALE*cel->eval_dist[i] + enc->lambda*bitsUsed[i] < |
| 517 | best_dist) { |
| 518 | cel->best_coding = i; |
| 519 | best_dist = ROQ_LAMBDA_SCALE*cel->eval_dist[i] + |
| 520 | enc->lambda*bitsUsed[i]; |
| 521 | } |
| 522 | |
| 523 | tempData->used_option[cel->best_coding]++; |
| 524 | tempData->mainChunkSize += bitsUsed[cel->best_coding]; |
| 525 | |
| 526 | if (cel->best_coding == RoQ_ID_SLD) |
| 527 | tempData->codebooks.usedCB4[cel->cbEntry]++; |
| 528 | |
| 529 | if (cel->best_coding == RoQ_ID_CCC) |
| 530 | for (i=0; i<4; i++) { |
| 531 | if (cel->subCels[i].best_coding == RoQ_ID_SLD) |
| 532 | tempData->codebooks.usedCB4[cel->subCels[i].cbEntry]++; |
| 533 | else if (cel->subCels[i].best_coding == RoQ_ID_CCC) |
| 534 | for (j=0; j<4; j++) |
| 535 | tempData->codebooks.usedCB2[cel->subCels[i].subCels[j]]++; |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | static void remap_codebooks(RoqContext *enc, RoqTempdata *tempData) |
| 540 | { |
| 541 | int i, j, idx=0; |
| 542 | |
| 543 | /* Make remaps for the final codebook usage */ |
| 544 | for (i=0; i<(enc->quake3_compat ? MAX_CBS_4x4-1 : MAX_CBS_4x4); i++) { |
| 545 | if (tempData->codebooks.usedCB4[i]) { |
| 546 | tempData->i2f4[i] = idx; |
| 547 | tempData->f2i4[idx] = i; |
| 548 | for (j=0; j<4; j++) |
| 549 | tempData->codebooks.usedCB2[enc->cb4x4[i].idx[j]]++; |
| 550 | idx++; |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | tempData->numCB4 = idx; |
| 555 | |
| 556 | idx = 0; |
| 557 | for (i=0; i<MAX_CBS_2x2; i++) { |
| 558 | if (tempData->codebooks.usedCB2[i]) { |
| 559 | tempData->i2f2[i] = idx; |
| 560 | tempData->f2i2[idx] = i; |
| 561 | idx++; |
| 562 | } |
| 563 | } |
| 564 | tempData->numCB2 = idx; |
| 565 | |
| 566 | } |
| 567 | |
| 568 | /** |
| 569 | * Write codebook chunk |
| 570 | */ |
| 571 | static void write_codebooks(RoqContext *enc, RoqTempdata *tempData) |
| 572 | { |
| 573 | int i, j; |
| 574 | uint8_t **outp= &enc->out_buf; |
| 575 | |
| 576 | if (tempData->numCB2) { |
| 577 | bytestream_put_le16(outp, RoQ_QUAD_CODEBOOK); |
| 578 | bytestream_put_le32(outp, tempData->numCB2*6 + tempData->numCB4*4); |
| 579 | bytestream_put_byte(outp, tempData->numCB4); |
| 580 | bytestream_put_byte(outp, tempData->numCB2); |
| 581 | |
| 582 | for (i=0; i<tempData->numCB2; i++) { |
| 583 | bytestream_put_buffer(outp, enc->cb2x2[tempData->f2i2[i]].y, 4); |
| 584 | bytestream_put_byte(outp, enc->cb2x2[tempData->f2i2[i]].u); |
| 585 | bytestream_put_byte(outp, enc->cb2x2[tempData->f2i2[i]].v); |
| 586 | } |
| 587 | |
| 588 | for (i=0; i<tempData->numCB4; i++) |
| 589 | for (j=0; j<4; j++) |
| 590 | bytestream_put_byte(outp, tempData->i2f2[enc->cb4x4[tempData->f2i4[i]].idx[j]]); |
| 591 | |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | static inline uint8_t motion_arg(motion_vect mot) |
| 596 | { |
| 597 | uint8_t ax = 8 - ((uint8_t) mot.d[0]); |
| 598 | uint8_t ay = 8 - ((uint8_t) mot.d[1]); |
| 599 | return ((ax&15)<<4) | (ay&15); |
| 600 | } |
| 601 | |
| 602 | typedef struct |
| 603 | { |
| 604 | int typeSpool; |
| 605 | int typeSpoolLength; |
| 606 | uint8_t argumentSpool[64]; |
| 607 | uint8_t *args; |
| 608 | uint8_t **pout; |
| 609 | } CodingSpool; |
| 610 | |
| 611 | /* NOTE: Typecodes must be spooled AFTER arguments!! */ |
| 612 | static void write_typecode(CodingSpool *s, uint8_t type) |
| 613 | { |
| 614 | s->typeSpool |= (type & 3) << (14 - s->typeSpoolLength); |
| 615 | s->typeSpoolLength += 2; |
| 616 | if (s->typeSpoolLength == 16) { |
| 617 | bytestream_put_le16(s->pout, s->typeSpool); |
| 618 | bytestream_put_buffer(s->pout, s->argumentSpool, |
| 619 | s->args - s->argumentSpool); |
| 620 | s->typeSpoolLength = 0; |
| 621 | s->typeSpool = 0; |
| 622 | s->args = s->argumentSpool; |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | static void reconstruct_and_encode_image(RoqContext *enc, RoqTempdata *tempData, int w, int h, int numBlocks) |
| 627 | { |
| 628 | int i, j, k; |
| 629 | int x, y; |
| 630 | int subX, subY; |
| 631 | int dist=0; |
| 632 | |
| 633 | roq_qcell *qcell; |
| 634 | CelEvaluation *eval; |
| 635 | |
| 636 | CodingSpool spool; |
| 637 | |
| 638 | spool.typeSpool=0; |
| 639 | spool.typeSpoolLength=0; |
| 640 | spool.args = spool.argumentSpool; |
| 641 | spool.pout = &enc->out_buf; |
| 642 | |
| 643 | if (tempData->used_option[RoQ_ID_CCC]%2) |
| 644 | tempData->mainChunkSize+=8; //FIXME |
| 645 | |
| 646 | /* Write the video chunk header */ |
| 647 | bytestream_put_le16(&enc->out_buf, RoQ_QUAD_VQ); |
| 648 | bytestream_put_le32(&enc->out_buf, tempData->mainChunkSize/8); |
| 649 | bytestream_put_byte(&enc->out_buf, 0x0); |
| 650 | bytestream_put_byte(&enc->out_buf, 0x0); |
| 651 | |
| 652 | for (i=0; i<numBlocks; i++) { |
| 653 | eval = tempData->cel_evals + i; |
| 654 | |
| 655 | x = eval->sourceX; |
| 656 | y = eval->sourceY; |
| 657 | dist += eval->eval_dist[eval->best_coding]; |
| 658 | |
| 659 | switch (eval->best_coding) { |
| 660 | case RoQ_ID_MOT: |
| 661 | write_typecode(&spool, RoQ_ID_MOT); |
| 662 | break; |
| 663 | |
| 664 | case RoQ_ID_FCC: |
| 665 | bytestream_put_byte(&spool.args, motion_arg(eval->motion)); |
| 666 | |
| 667 | write_typecode(&spool, RoQ_ID_FCC); |
| 668 | ff_apply_motion_8x8(enc, x, y, |
| 669 | eval->motion.d[0], eval->motion.d[1]); |
| 670 | break; |
| 671 | |
| 672 | case RoQ_ID_SLD: |
| 673 | bytestream_put_byte(&spool.args, tempData->i2f4[eval->cbEntry]); |
| 674 | write_typecode(&spool, RoQ_ID_SLD); |
| 675 | |
| 676 | qcell = enc->cb4x4 + eval->cbEntry; |
| 677 | ff_apply_vector_4x4(enc, x , y , enc->cb2x2 + qcell->idx[0]); |
| 678 | ff_apply_vector_4x4(enc, x+4, y , enc->cb2x2 + qcell->idx[1]); |
| 679 | ff_apply_vector_4x4(enc, x , y+4, enc->cb2x2 + qcell->idx[2]); |
| 680 | ff_apply_vector_4x4(enc, x+4, y+4, enc->cb2x2 + qcell->idx[3]); |
| 681 | break; |
| 682 | |
| 683 | case RoQ_ID_CCC: |
| 684 | write_typecode(&spool, RoQ_ID_CCC); |
| 685 | |
| 686 | for (j=0; j<4; j++) { |
| 687 | subX = x + 4*(j&1); |
| 688 | subY = y + 2*(j&2); |
| 689 | |
| 690 | switch(eval->subCels[j].best_coding) { |
| 691 | case RoQ_ID_MOT: |
| 692 | break; |
| 693 | |
| 694 | case RoQ_ID_FCC: |
| 695 | bytestream_put_byte(&spool.args, |
| 696 | motion_arg(eval->subCels[j].motion)); |
| 697 | |
| 698 | ff_apply_motion_4x4(enc, subX, subY, |
| 699 | eval->subCels[j].motion.d[0], |
| 700 | eval->subCels[j].motion.d[1]); |
| 701 | break; |
| 702 | |
| 703 | case RoQ_ID_SLD: |
| 704 | bytestream_put_byte(&spool.args, |
| 705 | tempData->i2f4[eval->subCels[j].cbEntry]); |
| 706 | |
| 707 | qcell = enc->cb4x4 + eval->subCels[j].cbEntry; |
| 708 | |
| 709 | ff_apply_vector_2x2(enc, subX , subY , |
| 710 | enc->cb2x2 + qcell->idx[0]); |
| 711 | ff_apply_vector_2x2(enc, subX+2, subY , |
| 712 | enc->cb2x2 + qcell->idx[1]); |
| 713 | ff_apply_vector_2x2(enc, subX , subY+2, |
| 714 | enc->cb2x2 + qcell->idx[2]); |
| 715 | ff_apply_vector_2x2(enc, subX+2, subY+2, |
| 716 | enc->cb2x2 + qcell->idx[3]); |
| 717 | break; |
| 718 | |
| 719 | case RoQ_ID_CCC: |
| 720 | for (k=0; k<4; k++) { |
| 721 | int cb_idx = eval->subCels[j].subCels[k]; |
| 722 | bytestream_put_byte(&spool.args, |
| 723 | tempData->i2f2[cb_idx]); |
| 724 | |
| 725 | ff_apply_vector_2x2(enc, subX + 2*(k&1), subY + (k&2), |
| 726 | enc->cb2x2 + cb_idx); |
| 727 | } |
| 728 | break; |
| 729 | } |
| 730 | write_typecode(&spool, eval->subCels[j].best_coding); |
| 731 | } |
| 732 | break; |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | /* Flush the remainder of the argument/type spool */ |
| 737 | while (spool.typeSpoolLength) |
| 738 | write_typecode(&spool, 0x0); |
| 739 | |
| 740 | #if 0 |
| 741 | uint8_t *fdata[3] = {enc->frame_to_enc->data[0], |
| 742 | enc->frame_to_enc->data[1], |
| 743 | enc->frame_to_enc->data[2]}; |
| 744 | uint8_t *cdata[3] = {enc->current_frame->data[0], |
| 745 | enc->current_frame->data[1], |
| 746 | enc->current_frame->data[2]}; |
| 747 | av_log(enc->avctx, AV_LOG_ERROR, "Expected distortion: %i Actual: %i\n", |
| 748 | dist, |
| 749 | block_sse(fdata, cdata, 0, 0, 0, 0, |
| 750 | enc->frame_to_enc->linesize, |
| 751 | enc->current_frame->linesize, |
| 752 | enc->width)); //WARNING: Square dimensions implied... |
| 753 | #endif |
| 754 | } |
| 755 | |
| 756 | |
| 757 | /** |
| 758 | * Create a single YUV cell from a 2x2 section of the image |
| 759 | */ |
| 760 | static inline void frame_block_to_cell(uint8_t *block, uint8_t * const *data, |
| 761 | int top, int left, const int *stride) |
| 762 | { |
| 763 | int i, j, u=0, v=0; |
| 764 | |
| 765 | for (i=0; i<2; i++) |
| 766 | for (j=0; j<2; j++) { |
| 767 | int x = (top+i)*stride[0] + left + j; |
| 768 | *block++ = data[0][x]; |
| 769 | x = (top+i)*stride[1] + left + j; |
| 770 | u += data[1][x]; |
| 771 | v += data[2][x]; |
| 772 | } |
| 773 | |
| 774 | *block++ = (u+2)/4; |
| 775 | *block++ = (v+2)/4; |
| 776 | } |
| 777 | |
| 778 | /** |
| 779 | * Create YUV clusters for the entire image |
| 780 | */ |
| 781 | static void create_clusters(const AVFrame *frame, int w, int h, uint8_t *yuvClusters) |
| 782 | { |
| 783 | int i, j, k, l; |
| 784 | |
| 785 | for (i=0; i<h; i+=4) |
| 786 | for (j=0; j<w; j+=4) { |
| 787 | for (k=0; k < 2; k++) |
| 788 | for (l=0; l < 2; l++) |
| 789 | frame_block_to_cell(yuvClusters + (l + 2*k)*6, frame->data, |
| 790 | i+2*k, j+2*l, frame->linesize); |
| 791 | yuvClusters += 24; |
| 792 | } |
| 793 | } |
| 794 | |
| 795 | static void generate_codebook(RoqContext *enc, RoqTempdata *tempdata, |
| 796 | int *points, int inputCount, roq_cell *results, |
| 797 | int size, int cbsize) |
| 798 | { |
| 799 | int i, j, k; |
| 800 | int c_size = size*size/4; |
| 801 | int *buf; |
| 802 | int *codebook = av_malloc_array(6*c_size, cbsize*sizeof(int)); |
| 803 | int *closest_cb; |
| 804 | |
| 805 | if (size == 4) |
| 806 | closest_cb = av_malloc_array(6*c_size, inputCount*sizeof(int)); |
| 807 | else |
| 808 | closest_cb = tempdata->closest_cb2; |
| 809 | |
| 810 | avpriv_init_elbg(points, 6*c_size, inputCount, codebook, cbsize, 1, closest_cb, &enc->randctx); |
| 811 | avpriv_do_elbg(points, 6*c_size, inputCount, codebook, cbsize, 1, closest_cb, &enc->randctx); |
| 812 | |
| 813 | if (size == 4) |
| 814 | av_free(closest_cb); |
| 815 | |
| 816 | buf = codebook; |
| 817 | for (i=0; i<cbsize; i++) |
| 818 | for (k=0; k<c_size; k++) { |
| 819 | for(j=0; j<4; j++) |
| 820 | results->y[j] = *buf++; |
| 821 | |
| 822 | results->u = (*buf++ + CHROMA_BIAS/2)/CHROMA_BIAS; |
| 823 | results->v = (*buf++ + CHROMA_BIAS/2)/CHROMA_BIAS; |
| 824 | results++; |
| 825 | } |
| 826 | |
| 827 | av_free(codebook); |
| 828 | } |
| 829 | |
| 830 | static void generate_new_codebooks(RoqContext *enc, RoqTempdata *tempData) |
| 831 | { |
| 832 | int i,j; |
| 833 | RoqCodebooks *codebooks = &tempData->codebooks; |
| 834 | int max = enc->width*enc->height/16; |
| 835 | uint8_t mb2[3*4]; |
| 836 | roq_cell *results4 = av_malloc(sizeof(roq_cell)*MAX_CBS_4x4*4); |
| 837 | uint8_t *yuvClusters=av_malloc_array(max, sizeof(int)*6*4); |
| 838 | int *points = av_malloc_array(max, 6*4*sizeof(int)); |
| 839 | int bias; |
| 840 | |
| 841 | /* Subsample YUV data */ |
| 842 | create_clusters(enc->frame_to_enc, enc->width, enc->height, yuvClusters); |
| 843 | |
| 844 | /* Cast to integer and apply chroma bias */ |
| 845 | for (i=0; i<max*24; i++) { |
| 846 | bias = ((i%6)<4) ? 1 : CHROMA_BIAS; |
| 847 | points[i] = bias*yuvClusters[i]; |
| 848 | } |
| 849 | |
| 850 | /* Create 4x4 codebooks */ |
| 851 | generate_codebook(enc, tempData, points, max, results4, 4, (enc->quake3_compat ? MAX_CBS_4x4-1 : MAX_CBS_4x4)); |
| 852 | |
| 853 | codebooks->numCB4 = (enc->quake3_compat ? MAX_CBS_4x4-1 : MAX_CBS_4x4); |
| 854 | |
| 855 | tempData->closest_cb2 = av_malloc_array(max, 4*sizeof(int)); |
| 856 | |
| 857 | /* Create 2x2 codebooks */ |
| 858 | generate_codebook(enc, tempData, points, max*4, enc->cb2x2, 2, MAX_CBS_2x2); |
| 859 | |
| 860 | codebooks->numCB2 = MAX_CBS_2x2; |
| 861 | |
| 862 | /* Unpack 2x2 codebook clusters */ |
| 863 | for (i=0; i<codebooks->numCB2; i++) |
| 864 | unpack_roq_cell(enc->cb2x2 + i, codebooks->unpacked_cb2 + i*2*2*3); |
| 865 | |
| 866 | /* Index all 4x4 entries to the 2x2 entries, unpack, and enlarge */ |
| 867 | for (i=0; i<codebooks->numCB4; i++) { |
| 868 | for (j=0; j<4; j++) { |
| 869 | unpack_roq_cell(&results4[4*i + j], mb2); |
| 870 | index_mb(mb2, codebooks->unpacked_cb2, codebooks->numCB2, |
| 871 | &enc->cb4x4[i].idx[j], 2); |
| 872 | } |
| 873 | unpack_roq_qcell(codebooks->unpacked_cb2, enc->cb4x4 + i, |
| 874 | codebooks->unpacked_cb4 + i*4*4*3); |
| 875 | enlarge_roq_mb4(codebooks->unpacked_cb4 + i*4*4*3, |
| 876 | codebooks->unpacked_cb4_enlarged + i*8*8*3); |
| 877 | } |
| 878 | |
| 879 | av_free(yuvClusters); |
| 880 | av_free(points); |
| 881 | av_free(results4); |
| 882 | } |
| 883 | |
| 884 | static int roq_encode_video(RoqContext *enc) |
| 885 | { |
| 886 | RoqTempdata *tempData = enc->tmpData; |
| 887 | int i; |
| 888 | |
| 889 | memset(tempData, 0, sizeof(*tempData)); |
| 890 | |
| 891 | create_cel_evals(enc, tempData); |
| 892 | |
| 893 | generate_new_codebooks(enc, tempData); |
| 894 | |
| 895 | if (enc->framesSinceKeyframe >= 1) { |
| 896 | motion_search(enc, 8); |
| 897 | motion_search(enc, 4); |
| 898 | } |
| 899 | |
| 900 | retry_encode: |
| 901 | for (i=0; i<enc->width*enc->height/64; i++) |
| 902 | gather_data_for_cel(tempData->cel_evals + i, enc, tempData); |
| 903 | |
| 904 | /* Quake 3 can't handle chunks bigger than 65535 bytes */ |
| 905 | if (tempData->mainChunkSize/8 > 65535 && enc->quake3_compat) { |
| 906 | if (enc->lambda > 100000) { |
| 907 | av_log(enc->avctx, AV_LOG_ERROR, "Cannot encode video in Quake compatible form\n"); |
| 908 | return AVERROR(EINVAL); |
| 909 | } |
| 910 | av_log(enc->avctx, AV_LOG_ERROR, |
| 911 | "Warning, generated a frame too big for Quake (%d > 65535), " |
| 912 | "now switching to a bigger qscale value.\n", |
| 913 | tempData->mainChunkSize/8); |
| 914 | enc->lambda *= 1.5; |
| 915 | tempData->mainChunkSize = 0; |
| 916 | memset(tempData->used_option, 0, sizeof(tempData->used_option)); |
| 917 | memset(tempData->codebooks.usedCB4, 0, |
| 918 | sizeof(tempData->codebooks.usedCB4)); |
| 919 | memset(tempData->codebooks.usedCB2, 0, |
| 920 | sizeof(tempData->codebooks.usedCB2)); |
| 921 | |
| 922 | goto retry_encode; |
| 923 | } |
| 924 | |
| 925 | remap_codebooks(enc, tempData); |
| 926 | |
| 927 | write_codebooks(enc, tempData); |
| 928 | |
| 929 | reconstruct_and_encode_image(enc, tempData, enc->width, enc->height, |
| 930 | enc->width*enc->height/64); |
| 931 | |
| 932 | enc->avctx->coded_frame = enc->current_frame; |
| 933 | |
| 934 | /* Rotate frame history */ |
| 935 | FFSWAP(AVFrame *, enc->current_frame, enc->last_frame); |
| 936 | FFSWAP(motion_vect *, enc->last_motion4, enc->this_motion4); |
| 937 | FFSWAP(motion_vect *, enc->last_motion8, enc->this_motion8); |
| 938 | |
| 939 | av_free(tempData->cel_evals); |
| 940 | av_free(tempData->closest_cb2); |
| 941 | |
| 942 | enc->framesSinceKeyframe++; |
| 943 | |
| 944 | return 0; |
| 945 | } |
| 946 | |
| 947 | static av_cold int roq_encode_end(AVCodecContext *avctx) |
| 948 | { |
| 949 | RoqContext *enc = avctx->priv_data; |
| 950 | |
| 951 | av_frame_free(&enc->current_frame); |
| 952 | av_frame_free(&enc->last_frame); |
| 953 | |
| 954 | av_free(enc->tmpData); |
| 955 | av_free(enc->this_motion4); |
| 956 | av_free(enc->last_motion4); |
| 957 | av_free(enc->this_motion8); |
| 958 | av_free(enc->last_motion8); |
| 959 | |
| 960 | return 0; |
| 961 | } |
| 962 | |
| 963 | static av_cold int roq_encode_init(AVCodecContext *avctx) |
| 964 | { |
| 965 | RoqContext *enc = avctx->priv_data; |
| 966 | |
| 967 | av_lfg_init(&enc->randctx, 1); |
| 968 | |
| 969 | enc->framesSinceKeyframe = 0; |
| 970 | if ((avctx->width & 0xf) || (avctx->height & 0xf)) { |
| 971 | av_log(avctx, AV_LOG_ERROR, "Dimensions must be divisible by 16\n"); |
| 972 | return AVERROR(EINVAL); |
| 973 | } |
| 974 | |
| 975 | if (avctx->width > 65535 || avctx->height > 65535) { |
| 976 | av_log(avctx, AV_LOG_ERROR, "Dimensions are max %d\n", enc->quake3_compat ? 32768 : 65535); |
| 977 | return AVERROR(EINVAL); |
| 978 | } |
| 979 | |
| 980 | if (((avctx->width)&(avctx->width-1))||((avctx->height)&(avctx->height-1))) |
| 981 | av_log(avctx, AV_LOG_ERROR, "Warning: dimensions not power of two, this is not supported by quake\n"); |
| 982 | |
| 983 | enc->width = avctx->width; |
| 984 | enc->height = avctx->height; |
| 985 | |
| 986 | enc->framesSinceKeyframe = 0; |
| 987 | enc->first_frame = 1; |
| 988 | |
| 989 | enc->last_frame = av_frame_alloc(); |
| 990 | enc->current_frame = av_frame_alloc(); |
| 991 | if (!enc->last_frame || !enc->current_frame) { |
| 992 | roq_encode_end(avctx); |
| 993 | return AVERROR(ENOMEM); |
| 994 | } |
| 995 | |
| 996 | enc->tmpData = av_malloc(sizeof(RoqTempdata)); |
| 997 | |
| 998 | enc->this_motion4 = |
| 999 | av_mallocz_array((enc->width*enc->height/16), sizeof(motion_vect)); |
| 1000 | |
| 1001 | enc->last_motion4 = |
| 1002 | av_malloc_array ((enc->width*enc->height/16), sizeof(motion_vect)); |
| 1003 | |
| 1004 | enc->this_motion8 = |
| 1005 | av_mallocz_array((enc->width*enc->height/64), sizeof(motion_vect)); |
| 1006 | |
| 1007 | enc->last_motion8 = |
| 1008 | av_malloc_array ((enc->width*enc->height/64), sizeof(motion_vect)); |
| 1009 | |
| 1010 | return 0; |
| 1011 | } |
| 1012 | |
| 1013 | static void roq_write_video_info_chunk(RoqContext *enc) |
| 1014 | { |
| 1015 | /* ROQ info chunk */ |
| 1016 | bytestream_put_le16(&enc->out_buf, RoQ_INFO); |
| 1017 | |
| 1018 | /* Size: 8 bytes */ |
| 1019 | bytestream_put_le32(&enc->out_buf, 8); |
| 1020 | |
| 1021 | /* Unused argument */ |
| 1022 | bytestream_put_byte(&enc->out_buf, 0x00); |
| 1023 | bytestream_put_byte(&enc->out_buf, 0x00); |
| 1024 | |
| 1025 | /* Width */ |
| 1026 | bytestream_put_le16(&enc->out_buf, enc->width); |
| 1027 | |
| 1028 | /* Height */ |
| 1029 | bytestream_put_le16(&enc->out_buf, enc->height); |
| 1030 | |
| 1031 | /* Unused in Quake 3, mimics the output of the real encoder */ |
| 1032 | bytestream_put_byte(&enc->out_buf, 0x08); |
| 1033 | bytestream_put_byte(&enc->out_buf, 0x00); |
| 1034 | bytestream_put_byte(&enc->out_buf, 0x04); |
| 1035 | bytestream_put_byte(&enc->out_buf, 0x00); |
| 1036 | } |
| 1037 | |
| 1038 | static int roq_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
| 1039 | const AVFrame *frame, int *got_packet) |
| 1040 | { |
| 1041 | RoqContext *enc = avctx->priv_data; |
| 1042 | int size, ret; |
| 1043 | |
| 1044 | enc->avctx = avctx; |
| 1045 | |
| 1046 | enc->frame_to_enc = frame; |
| 1047 | |
| 1048 | if (frame->quality) |
| 1049 | enc->lambda = frame->quality - 1; |
| 1050 | else |
| 1051 | enc->lambda = 2*ROQ_LAMBDA_SCALE; |
| 1052 | |
| 1053 | /* 138 bits max per 8x8 block + |
| 1054 | * 256 codebooks*(6 bytes 2x2 + 4 bytes 4x4) + 8 bytes frame header */ |
| 1055 | size = ((enc->width * enc->height / 64) * 138 + 7) / 8 + 256 * (6 + 4) + 8; |
| 1056 | if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0) |
| 1057 | return ret; |
| 1058 | enc->out_buf = pkt->data; |
| 1059 | |
| 1060 | /* Check for I frame */ |
| 1061 | if (enc->framesSinceKeyframe == avctx->gop_size) |
| 1062 | enc->framesSinceKeyframe = 0; |
| 1063 | |
| 1064 | if (enc->first_frame) { |
| 1065 | /* Alloc memory for the reconstruction data (we must know the stride |
| 1066 | for that) */ |
| 1067 | if ((ret = ff_get_buffer(avctx, enc->current_frame, 0)) < 0 || |
| 1068 | (ret = ff_get_buffer(avctx, enc->last_frame, 0)) < 0) |
| 1069 | return ret; |
| 1070 | |
| 1071 | /* Before the first video frame, write a "video info" chunk */ |
| 1072 | roq_write_video_info_chunk(enc); |
| 1073 | |
| 1074 | enc->first_frame = 0; |
| 1075 | } |
| 1076 | |
| 1077 | /* Encode the actual frame */ |
| 1078 | if ((ret = roq_encode_video(enc)) < 0) |
| 1079 | return ret; |
| 1080 | |
| 1081 | pkt->size = enc->out_buf - pkt->data; |
| 1082 | if (enc->framesSinceKeyframe == 1) |
| 1083 | pkt->flags |= AV_PKT_FLAG_KEY; |
| 1084 | *got_packet = 1; |
| 1085 | |
| 1086 | return 0; |
| 1087 | } |
| 1088 | |
| 1089 | #define OFFSET(x) offsetof(RoqContext, x) |
| 1090 | #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM |
| 1091 | static const AVOption options[] = { |
| 1092 | { "quake3_compat", "Whether to respect known limitations in Quake 3 decoder", OFFSET(quake3_compat), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE }, |
| 1093 | { NULL }, |
| 1094 | }; |
| 1095 | |
| 1096 | static const AVClass roq_class = { |
| 1097 | .class_name = "RoQ", |
| 1098 | .item_name = av_default_item_name, |
| 1099 | .option = options, |
| 1100 | .version = LIBAVUTIL_VERSION_INT, |
| 1101 | }; |
| 1102 | |
| 1103 | AVCodec ff_roq_encoder = { |
| 1104 | .name = "roqvideo", |
| 1105 | .long_name = NULL_IF_CONFIG_SMALL("id RoQ video"), |
| 1106 | .type = AVMEDIA_TYPE_VIDEO, |
| 1107 | .id = AV_CODEC_ID_ROQ, |
| 1108 | .priv_data_size = sizeof(RoqContext), |
| 1109 | .init = roq_encode_init, |
| 1110 | .encode2 = roq_encode_frame, |
| 1111 | .close = roq_encode_end, |
| 1112 | .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUVJ444P, |
| 1113 | AV_PIX_FMT_NONE }, |
| 1114 | .priv_class = &roq_class, |
| 1115 | }; |