1 /* 2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 12 /* 13 * This is an example demonstrating how to implement a multi-layer VP8 14 * encoding scheme based on temporal scalability for video applications 15 * that benefit from a scalable bitstream. 16 */ 17 #include <stdio.h> 18 #include <stdlib.h> 19 #include <stdarg.h> 20 #include <string.h> 21 #define VPX_CODEC_DISABLE_COMPAT 1 22 #include "vpx/vpx_encoder.h" 23 #include "vpx/vp8cx.h" 24 #define interface (vpx_codec_vp8_cx()) 25 #define fourcc 0x30385056 26 27 #define IVF_FILE_HDR_SZ (32) 28 #define IVF_FRAME_HDR_SZ (12) 29 30 static void mem_put_le16(char *mem, unsigned int val) { 31 mem[0] = val; 32 mem[1] = val>>8; 33 } 34 35 static void mem_put_le32(char *mem, unsigned int val) { 36 mem[0] = val; 37 mem[1] = val>>8; 38 mem[2] = val>>16; 39 mem[3] = val>>24; 40 } 41 42 static void die(const char *fmt, ...) { 43 va_list ap; 44 45 va_start(ap, fmt); 46 vprintf(fmt, ap); 47 if(fmt[strlen(fmt)-1] != '\n') 48 printf("\n"); 49 exit(EXIT_FAILURE); 50 } 51 52 static void die_codec(vpx_codec_ctx_t *ctx, const char *s) { 53 const char *detail = vpx_codec_error_detail(ctx); 54 55 printf("%s: %s\n", s, vpx_codec_error(ctx)); 56 if(detail) 57 printf(" %s\n",detail); 58 exit(EXIT_FAILURE); 59 } 60 61 static int read_frame(FILE *f, vpx_image_t *img) { 62 size_t nbytes, to_read; 63 int res = 1; 64 65 to_read = img->w*img->h*3/2; 66 nbytes = fread(img->planes[0], 1, to_read, f); 67 if(nbytes != to_read) { 68 res = 0; 69 if(nbytes > 0) 70 printf("Warning: Read partial frame. Check your width & height!\n"); 71 } 72 return res; 73 } 74 75 static void write_ivf_file_header(FILE *outfile, 76 const vpx_codec_enc_cfg_t *cfg, 77 int frame_cnt) { 78 char header[32]; 79 80 if(cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS) 81 return; 82 header[0] = 'D'; 83 header[1] = 'K'; 84 header[2] = 'I'; 85 header[3] = 'F'; 86 mem_put_le16(header+4, 0); /* version */ 87 mem_put_le16(header+6, 32); /* headersize */ 88 mem_put_le32(header+8, fourcc); /* headersize */ 89 mem_put_le16(header+12, cfg->g_w); /* width */ 90 mem_put_le16(header+14, cfg->g_h); /* height */ 91 mem_put_le32(header+16, cfg->g_timebase.den); /* rate */ 92 mem_put_le32(header+20, cfg->g_timebase.num); /* scale */ 93 mem_put_le32(header+24, frame_cnt); /* length */ 94 mem_put_le32(header+28, 0); /* unused */ 95 96 (void) fwrite(header, 1, 32, outfile); 97 } 98 99 100 static void write_ivf_frame_header(FILE *outfile, 101 const vpx_codec_cx_pkt_t *pkt) 102 { 103 char header[12]; 104 vpx_codec_pts_t pts; 105 106 if(pkt->kind != VPX_CODEC_CX_FRAME_PKT) 107 return; 108 109 pts = pkt->data.frame.pts; 110 mem_put_le32(header, pkt->data.frame.sz); 111 mem_put_le32(header+4, pts&0xFFFFFFFF); 112 mem_put_le32(header+8, pts >> 32); 113 114 (void) fwrite(header, 1, 12, outfile); 115 } 116 117 static int mode_to_num_layers[12] = {1, 2, 2, 3, 3, 3, 3, 5, 2, 3, 3, 3}; 118 119 int main(int argc, char **argv) { 120 FILE *infile, *outfile[VPX_TS_MAX_LAYERS]; 121 vpx_codec_ctx_t codec; 122 vpx_codec_enc_cfg_t cfg; 123 int frame_cnt = 0; 124 vpx_image_t raw; 125 vpx_codec_err_t res; 126 unsigned int width; 127 unsigned int height; 128 int frame_avail; 129 int got_data; 130 int flags = 0; 131 int i; 132 int pts = 0; /* PTS starts at 0 */ 133 int frame_duration = 1; /* 1 timebase tick per frame */ 134 135 int layering_mode = 0; 136 int frames_in_layer[VPX_TS_MAX_LAYERS] = {0}; 137 int layer_flags[VPX_TS_MAX_PERIODICITY] = {0}; 138 int flag_periodicity; 139 int max_intra_size_pct; 140 141 /* Check usage and arguments */ 142 if (argc < 9) 143 die("Usage: %s <infile> <outfile> <width> <height> <rate_num> " 144 " <rate_den> <mode> <Rate_0> ... <Rate_nlayers-1>\n", argv[0]); 145 146 width = strtol (argv[3], NULL, 0); 147 height = strtol (argv[4], NULL, 0); 148 if (width < 16 || width%2 || height <16 || height%2) 149 die ("Invalid resolution: %d x %d", width, height); 150 151 if (!sscanf(argv[7], "%d", &layering_mode)) 152 die ("Invalid mode %s", argv[7]); 153 if (layering_mode<0 || layering_mode>11) 154 die ("Invalid mode (0..11) %s", argv[7]); 155 156 if (argc != 8+mode_to_num_layers[layering_mode]) 157 die ("Invalid number of arguments"); 158 159 if (!vpx_img_alloc (&raw, VPX_IMG_FMT_I420, width, height, 32)) 160 die ("Failed to allocate image", width, height); 161 162 printf("Using %s\n",vpx_codec_iface_name(interface)); 163 164 /* Populate encoder configuration */ 165 res = vpx_codec_enc_config_default(interface, &cfg, 0); 166 if(res) { 167 printf("Failed to get config: %s\n", vpx_codec_err_to_string(res)); 168 return EXIT_FAILURE; 169 } 170 171 /* Update the default configuration with our settings */ 172 cfg.g_w = width; 173 cfg.g_h = height; 174 175 /* Timebase format e.g. 30fps: numerator=1, demoninator=30 */ 176 if (!sscanf (argv[5], "%d", &cfg.g_timebase.num )) 177 die ("Invalid timebase numerator %s", argv[5]); 178 if (!sscanf (argv[6], "%d", &cfg.g_timebase.den )) 179 die ("Invalid timebase denominator %s", argv[6]); 180 181 for (i=8; i<8+mode_to_num_layers[layering_mode]; i++) 182 if (!sscanf(argv[i], "%ud", &cfg.ts_target_bitrate[i-8])) 183 die ("Invalid data rate %s", argv[i]); 184 185 /* Real time parameters */ 186 cfg.rc_dropframe_thresh = 0; 187 cfg.rc_end_usage = VPX_CBR; 188 cfg.rc_resize_allowed = 0; 189 cfg.rc_min_quantizer = 2; 190 cfg.rc_max_quantizer = 56; 191 cfg.rc_undershoot_pct = 100; 192 cfg.rc_overshoot_pct = 15; 193 cfg.rc_buf_initial_sz = 500; 194 cfg.rc_buf_optimal_sz = 600; 195 cfg.rc_buf_sz = 1000; 196 197 /* Enable error resilient mode */ 198 cfg.g_error_resilient = 1; 199 cfg.g_lag_in_frames = 0; 200 cfg.kf_mode = VPX_KF_DISABLED; 201 202 /* Disable automatic keyframe placement */ 203 cfg.kf_min_dist = cfg.kf_max_dist = 3000; 204 205 /* Default setting for bitrate: used in special case of 1 layer (case 0). */ 206 cfg.rc_target_bitrate = cfg.ts_target_bitrate[0]; 207 208 /* Temporal scaling parameters: */ 209 /* NOTE: The 3 prediction frames cannot be used interchangeably due to 210 * differences in the way they are handled throughout the code. The 211 * frames should be allocated to layers in the order LAST, GF, ARF. 212 * Other combinations work, but may produce slightly inferior results. 213 */ 214 switch (layering_mode) 215 { 216 case 0: 217 { 218 /* 1-layer */ 219 int ids[1] = {0}; 220 cfg.ts_number_layers = 1; 221 cfg.ts_periodicity = 1; 222 cfg.ts_rate_decimator[0] = 1; 223 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 224 225 flag_periodicity = cfg.ts_periodicity; 226 227 // Update L only. 228 layer_flags[0] = VPX_EFLAG_FORCE_KF | 229 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; 230 break; 231 } 232 case 1: 233 { 234 /* 2-layers, 2-frame period */ 235 int ids[2] = {0,1}; 236 cfg.ts_number_layers = 2; 237 cfg.ts_periodicity = 2; 238 cfg.ts_rate_decimator[0] = 2; 239 cfg.ts_rate_decimator[1] = 1; 240 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 241 242 flag_periodicity = cfg.ts_periodicity; 243 #if 1 244 /* 0=L, 1=GF, Intra-layer prediction enabled */ 245 layer_flags[0] = VPX_EFLAG_FORCE_KF | 246 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | 247 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF; 248 layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST | 249 VP8_EFLAG_NO_REF_ARF; 250 #else 251 /* 0=L, 1=GF, Intra-layer prediction disabled */ 252 layer_flags[0] = VPX_EFLAG_FORCE_KF | 253 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | 254 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF; 255 layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST | 256 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_REF_LAST; 257 #endif 258 break; 259 } 260 261 case 2: 262 { 263 /* 2-layers, 3-frame period */ 264 int ids[3] = {0,1,1}; 265 cfg.ts_number_layers = 2; 266 cfg.ts_periodicity = 3; 267 cfg.ts_rate_decimator[0] = 3; 268 cfg.ts_rate_decimator[1] = 1; 269 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 270 271 flag_periodicity = cfg.ts_periodicity; 272 273 /* 0=L, 1=GF, Intra-layer prediction enabled */ 274 layer_flags[0] = VPX_EFLAG_FORCE_KF | 275 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | 276 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; 277 layer_flags[1] = 278 layer_flags[2] = VP8_EFLAG_NO_REF_GF | 279 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF | 280 VP8_EFLAG_NO_UPD_LAST; 281 break; 282 } 283 284 case 3: 285 { 286 /* 3-layers, 6-frame period */ 287 int ids[6] = {0,2,2,1,2,2}; 288 cfg.ts_number_layers = 3; 289 cfg.ts_periodicity = 6; 290 cfg.ts_rate_decimator[0] = 6; 291 cfg.ts_rate_decimator[1] = 3; 292 cfg.ts_rate_decimator[2] = 1; 293 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 294 295 flag_periodicity = cfg.ts_periodicity; 296 297 /* 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled */ 298 layer_flags[0] = VPX_EFLAG_FORCE_KF | 299 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | 300 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; 301 layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF | 302 VP8_EFLAG_NO_UPD_LAST; 303 layer_flags[1] = 304 layer_flags[2] = 305 layer_flags[4] = 306 layer_flags[5] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_LAST; 307 break; 308 } 309 310 case 4: 311 { 312 /* 3-layers, 4-frame period */ 313 int ids[4] = {0,2,1,2}; 314 cfg.ts_number_layers = 3; 315 cfg.ts_periodicity = 4; 316 cfg.ts_rate_decimator[0] = 4; 317 cfg.ts_rate_decimator[1] = 2; 318 cfg.ts_rate_decimator[2] = 1; 319 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 320 321 flag_periodicity = cfg.ts_periodicity; 322 323 /* 0=L, 1=GF, 2=ARF, Intra-layer prediction disabled */ 324 layer_flags[0] = VPX_EFLAG_FORCE_KF | 325 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | 326 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; 327 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | 328 VP8_EFLAG_NO_UPD_ARF | 329 VP8_EFLAG_NO_UPD_LAST; 330 layer_flags[1] = 331 layer_flags[3] = VP8_EFLAG_NO_REF_ARF | 332 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF | 333 VP8_EFLAG_NO_UPD_ARF; 334 break; 335 } 336 337 case 5: 338 { 339 /* 3-layers, 4-frame period */ 340 int ids[4] = {0,2,1,2}; 341 cfg.ts_number_layers = 3; 342 cfg.ts_periodicity = 4; 343 cfg.ts_rate_decimator[0] = 4; 344 cfg.ts_rate_decimator[1] = 2; 345 cfg.ts_rate_decimator[2] = 1; 346 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 347 348 flag_periodicity = cfg.ts_periodicity; 349 350 /* 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled in layer 1, 351 * disabled in layer 2 352 */ 353 layer_flags[0] = VPX_EFLAG_FORCE_KF | 354 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | 355 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; 356 layer_flags[2] = VP8_EFLAG_NO_REF_ARF | 357 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF; 358 layer_flags[1] = 359 layer_flags[3] = VP8_EFLAG_NO_REF_ARF | 360 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF | 361 VP8_EFLAG_NO_UPD_ARF; 362 break; 363 } 364 365 case 6: 366 { 367 /* 3-layers, 4-frame period */ 368 int ids[4] = {0,2,1,2}; 369 cfg.ts_number_layers = 3; 370 cfg.ts_periodicity = 4; 371 cfg.ts_rate_decimator[0] = 4; 372 cfg.ts_rate_decimator[1] = 2; 373 cfg.ts_rate_decimator[2] = 1; 374 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 375 376 flag_periodicity = cfg.ts_periodicity; 377 378 /* 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled */ 379 layer_flags[0] = VPX_EFLAG_FORCE_KF | 380 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | 381 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; 382 layer_flags[2] = VP8_EFLAG_NO_REF_ARF | 383 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF; 384 layer_flags[1] = 385 layer_flags[3] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF; 386 break; 387 } 388 389 case 7: 390 { 391 /* NOTE: Probably of academic interest only */ 392 393 /* 5-layers, 16-frame period */ 394 int ids[16] = {0,4,3,4,2,4,3,4,1,4,3,4,2,4,3,4}; 395 cfg.ts_number_layers = 5; 396 cfg.ts_periodicity = 16; 397 cfg.ts_rate_decimator[0] = 16; 398 cfg.ts_rate_decimator[1] = 8; 399 cfg.ts_rate_decimator[2] = 4; 400 cfg.ts_rate_decimator[3] = 2; 401 cfg.ts_rate_decimator[4] = 1; 402 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 403 404 flag_periodicity = cfg.ts_periodicity; 405 406 layer_flags[0] = VPX_EFLAG_FORCE_KF; 407 layer_flags[1] = 408 layer_flags[3] = 409 layer_flags[5] = 410 layer_flags[7] = 411 layer_flags[9] = 412 layer_flags[11] = 413 layer_flags[13] = 414 layer_flags[15] = VP8_EFLAG_NO_UPD_LAST | 415 VP8_EFLAG_NO_UPD_GF | 416 VP8_EFLAG_NO_UPD_ARF; 417 layer_flags[2] = 418 layer_flags[6] = 419 layer_flags[10] = 420 layer_flags[14] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_GF; 421 layer_flags[4] = 422 layer_flags[12] = VP8_EFLAG_NO_REF_LAST | 423 VP8_EFLAG_NO_UPD_ARF; 424 layer_flags[8] = VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_REF_GF; 425 break; 426 } 427 428 case 8: 429 { 430 /* 2-layers, with sync point at first frame of layer 1. */ 431 int ids[2] = {0,1}; 432 cfg.ts_number_layers = 2; 433 cfg.ts_periodicity = 2; 434 cfg.ts_rate_decimator[0] = 2; 435 cfg.ts_rate_decimator[1] = 1; 436 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 437 438 flag_periodicity = 8; 439 440 /* 0=L, 1=GF */ 441 // ARF is used as predictor for all frames, and is only updated on 442 // key frame. Sync point every 8 frames. 443 444 // Layer 0: predict from L and ARF, update L and G. 445 layer_flags[0] = VPX_EFLAG_FORCE_KF | 446 VP8_EFLAG_NO_REF_GF | 447 VP8_EFLAG_NO_UPD_ARF; 448 449 // Layer 1: sync point: predict from L and ARF, and update G. 450 layer_flags[1] = VP8_EFLAG_NO_REF_GF | 451 VP8_EFLAG_NO_UPD_LAST | 452 VP8_EFLAG_NO_UPD_ARF; 453 454 // Layer 0, predict from L and ARF, update L. 455 layer_flags[2] = VP8_EFLAG_NO_REF_GF | 456 VP8_EFLAG_NO_UPD_GF | 457 VP8_EFLAG_NO_UPD_ARF; 458 459 // Layer 1: predict from L, G and ARF, and update G. 460 layer_flags[3] = VP8_EFLAG_NO_UPD_ARF | 461 VP8_EFLAG_NO_UPD_LAST | 462 VP8_EFLAG_NO_UPD_ENTROPY; 463 464 // Layer 0 465 layer_flags[4] = layer_flags[2]; 466 467 // Layer 1 468 layer_flags[5] = layer_flags[3]; 469 470 // Layer 0 471 layer_flags[6] = layer_flags[4]; 472 473 // Layer 1 474 layer_flags[7] = layer_flags[5]; 475 break; 476 } 477 478 case 9: 479 { 480 /* 3-layers */ 481 // Sync points for layer 1 and 2 every 8 frames. 482 483 int ids[4] = {0,2,1,2}; 484 cfg.ts_number_layers = 3; 485 cfg.ts_periodicity = 4; 486 cfg.ts_rate_decimator[0] = 4; 487 cfg.ts_rate_decimator[1] = 2; 488 cfg.ts_rate_decimator[2] = 1; 489 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 490 491 flag_periodicity = 8; 492 493 /* 0=L, 1=GF, 2=ARF */ 494 layer_flags[0] = VPX_EFLAG_FORCE_KF | 495 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | 496 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; 497 layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | 498 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF; 499 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | 500 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF; 501 layer_flags[3] = 502 layer_flags[5] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF; 503 layer_flags[4] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | 504 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; 505 layer_flags[6] = VP8_EFLAG_NO_REF_ARF | 506 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF; 507 layer_flags[7] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF | 508 VP8_EFLAG_NO_UPD_ARF | 509 VP8_EFLAG_NO_UPD_ENTROPY; 510 break; 511 } 512 case 10: 513 { 514 // 3-layers structure where ARF is used as predictor for all frames, 515 // and is only updated on key frame. 516 // Sync points for layer 1 and 2 every 8 frames. 517 518 int ids[4] = {0,2,1,2}; 519 cfg.ts_number_layers = 3; 520 cfg.ts_periodicity = 4; 521 cfg.ts_rate_decimator[0] = 4; 522 cfg.ts_rate_decimator[1] = 2; 523 cfg.ts_rate_decimator[2] = 1; 524 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 525 526 flag_periodicity = 8; 527 528 /* 0=L, 1=GF, 2=ARF */ 529 530 // Layer 0: predict from L and ARF; update L and G. 531 layer_flags[0] = VPX_EFLAG_FORCE_KF | 532 VP8_EFLAG_NO_UPD_ARF | 533 VP8_EFLAG_NO_REF_GF; 534 535 // Layer 2: sync point: predict from L and ARF; update none. 536 layer_flags[1] = VP8_EFLAG_NO_REF_GF | 537 VP8_EFLAG_NO_UPD_GF | 538 VP8_EFLAG_NO_UPD_ARF | 539 VP8_EFLAG_NO_UPD_LAST | 540 VP8_EFLAG_NO_UPD_ENTROPY; 541 542 // Layer 1: sync point: predict from L and ARF; update G. 543 layer_flags[2] = VP8_EFLAG_NO_REF_GF | 544 VP8_EFLAG_NO_UPD_ARF | 545 VP8_EFLAG_NO_UPD_LAST; 546 547 // Layer 2: predict from L, G, ARF; update none. 548 layer_flags[3] = VP8_EFLAG_NO_UPD_GF | 549 VP8_EFLAG_NO_UPD_ARF | 550 VP8_EFLAG_NO_UPD_LAST | 551 VP8_EFLAG_NO_UPD_ENTROPY; 552 553 // Layer 0: predict from L and ARF; update L. 554 layer_flags[4] = VP8_EFLAG_NO_UPD_GF | 555 VP8_EFLAG_NO_UPD_ARF | 556 VP8_EFLAG_NO_REF_GF; 557 558 // Layer 2: predict from L, G, ARF; update none. 559 layer_flags[5] = layer_flags[3]; 560 561 // Layer 1: predict from L, G, ARF; update G. 562 layer_flags[6] = VP8_EFLAG_NO_UPD_ARF | 563 VP8_EFLAG_NO_UPD_LAST; 564 565 // Layer 2: predict from L, G, ARF; update none. 566 layer_flags[7] = layer_flags[3]; 567 break; 568 } 569 case 11: 570 default: 571 { 572 // 3-layers structure as in case 10, but no sync/refresh points for 573 // layer 1 and 2. 574 575 int ids[4] = {0,2,1,2}; 576 cfg.ts_number_layers = 3; 577 cfg.ts_periodicity = 4; 578 cfg.ts_rate_decimator[0] = 4; 579 cfg.ts_rate_decimator[1] = 2; 580 cfg.ts_rate_decimator[2] = 1; 581 memcpy(cfg.ts_layer_id, ids, sizeof(ids)); 582 583 flag_periodicity = 8; 584 585 /* 0=L, 1=GF, 2=ARF */ 586 587 // Layer 0: predict from L and ARF; update L. 588 layer_flags[0] = VP8_EFLAG_NO_UPD_GF | 589 VP8_EFLAG_NO_UPD_ARF | 590 VP8_EFLAG_NO_REF_GF; 591 layer_flags[4] = layer_flags[0]; 592 593 // Layer 1: predict from L, G, ARF; update G. 594 layer_flags[2] = VP8_EFLAG_NO_UPD_ARF | 595 VP8_EFLAG_NO_UPD_LAST; 596 layer_flags[6] = layer_flags[2]; 597 598 // Layer 2: predict from L, G, ARF; update none. 599 layer_flags[1] = VP8_EFLAG_NO_UPD_GF | 600 VP8_EFLAG_NO_UPD_ARF | 601 VP8_EFLAG_NO_UPD_LAST | 602 VP8_EFLAG_NO_UPD_ENTROPY; 603 layer_flags[3] = layer_flags[1]; 604 layer_flags[5] = layer_flags[1]; 605 layer_flags[7] = layer_flags[1]; 606 break; 607 } 608 } 609 610 /* Open input file */ 611 if(!(infile = fopen(argv[1], "rb"))) 612 die("Failed to open %s for reading", argv[1]); 613 614 /* Open an output file for each stream */ 615 for (i=0; i<cfg.ts_number_layers; i++) 616 { 617 char file_name[512]; 618 sprintf (file_name, "%s_%d.ivf", argv[2], i); 619 if (!(outfile[i] = fopen(file_name, "wb"))) 620 die("Failed to open %s for writing", file_name); 621 write_ivf_file_header(outfile[i], &cfg, 0); 622 } 623 624 /* Initialize codec */ 625 if (vpx_codec_enc_init (&codec, interface, &cfg, 0)) 626 die_codec (&codec, "Failed to initialize encoder"); 627 628 /* Cap CPU & first I-frame size */ 629 vpx_codec_control (&codec, VP8E_SET_CPUUSED, -6); 630 vpx_codec_control (&codec, VP8E_SET_STATIC_THRESHOLD, 1); 631 vpx_codec_control (&codec, VP8E_SET_NOISE_SENSITIVITY, 1); 632 vpx_codec_control(&codec, VP8E_SET_TOKEN_PARTITIONS, 1); 633 634 max_intra_size_pct = (int) (((double)cfg.rc_buf_optimal_sz * 0.5) 635 * ((double) cfg.g_timebase.den / cfg.g_timebase.num) 636 / 10.0); 637 /* printf ("max_intra_size_pct=%d\n", max_intra_size_pct); */ 638 639 vpx_codec_control(&codec, VP8E_SET_MAX_INTRA_BITRATE_PCT, 640 max_intra_size_pct); 641 642 frame_avail = 1; 643 while (frame_avail || got_data) { 644 vpx_codec_iter_t iter = NULL; 645 const vpx_codec_cx_pkt_t *pkt; 646 647 flags = layer_flags[frame_cnt % flag_periodicity]; 648 649 frame_avail = read_frame(infile, &raw); 650 if (vpx_codec_encode(&codec, frame_avail? &raw : NULL, pts, 651 1, flags, VPX_DL_REALTIME)) 652 die_codec(&codec, "Failed to encode frame"); 653 654 /* Reset KF flag */ 655 if (layering_mode != 7) 656 layer_flags[0] &= ~VPX_EFLAG_FORCE_KF; 657 658 got_data = 0; 659 while ( (pkt = vpx_codec_get_cx_data(&codec, &iter)) ) { 660 got_data = 1; 661 switch (pkt->kind) { 662 case VPX_CODEC_CX_FRAME_PKT: 663 for (i=cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity]; 664 i<cfg.ts_number_layers; i++) 665 { 666 write_ivf_frame_header(outfile[i], pkt); 667 (void) fwrite(pkt->data.frame.buf, 1, pkt->data.frame.sz, 668 outfile[i]); 669 frames_in_layer[i]++; 670 } 671 break; 672 default: 673 break; 674 } 675 } 676 frame_cnt++; 677 pts += frame_duration; 678 } 679 fclose (infile); 680 681 printf ("Processed %d frames.\n",frame_cnt-1); 682 if (vpx_codec_destroy(&codec)) 683 die_codec (&codec, "Failed to destroy codec"); 684 685 /* Try to rewrite the output file headers with the actual frame count */ 686 for (i=0; i<cfg.ts_number_layers; i++) 687 { 688 if (!fseek(outfile[i], 0, SEEK_SET)) 689 write_ivf_file_header (outfile[i], &cfg, frames_in_layer[i]); 690 fclose (outfile[i]); 691 } 692 693 return EXIT_SUCCESS; 694 } 695
