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 * This is an example demonstrating how to implement a multi-layer 13 * VP9 encoding scheme based on spatial scalability for video applications 14 * that benefit from a scalable bitstream. 15 */ 16 17#include <math.h> 18#include <stdarg.h> 19#include <stdlib.h> 20#include <string.h> 21#include <time.h> 22 23 24#include "../args.h" 25#include "../tools_common.h" 26#include "../video_writer.h" 27 28#include "../vpx_ports/vpx_timer.h" 29#include "vpx/svc_context.h" 30#include "vpx/vp8cx.h" 31#include "vpx/vpx_encoder.h" 32#include "../vpxstats.h" 33#define OUTPUT_RC_STATS 1 34 35static const arg_def_t skip_frames_arg = 36 ARG_DEF("s", "skip-frames", 1, "input frames to skip"); 37static const arg_def_t frames_arg = 38 ARG_DEF("f", "frames", 1, "number of frames to encode"); 39static const arg_def_t threads_arg = 40 ARG_DEF("th", "threads", 1, "number of threads to use"); 41#if OUTPUT_RC_STATS 42static const arg_def_t output_rc_stats_arg = 43 ARG_DEF("rcstat", "output_rc_stats", 1, "output rc stats"); 44#endif 45static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width"); 46static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height"); 47static const arg_def_t timebase_arg = 48 ARG_DEF("t", "timebase", 1, "timebase (num/den)"); 49static const arg_def_t bitrate_arg = ARG_DEF( 50 "b", "target-bitrate", 1, "encoding bitrate, in kilobits per second"); 51static const arg_def_t spatial_layers_arg = 52 ARG_DEF("sl", "spatial-layers", 1, "number of spatial SVC layers"); 53static const arg_def_t temporal_layers_arg = 54 ARG_DEF("tl", "temporal-layers", 1, "number of temporal SVC layers"); 55static const arg_def_t temporal_layering_mode_arg = 56 ARG_DEF("tlm", "temporal-layering-mode", 1, "temporal layering scheme." 57 "VP9E_TEMPORAL_LAYERING_MODE"); 58static const arg_def_t kf_dist_arg = 59 ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes"); 60static const arg_def_t scale_factors_arg = 61 ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)"); 62static const arg_def_t passes_arg = 63 ARG_DEF("p", "passes", 1, "Number of passes (1/2)"); 64static const arg_def_t pass_arg = 65 ARG_DEF(NULL, "pass", 1, "Pass to execute (1/2)"); 66static const arg_def_t fpf_name_arg = 67 ARG_DEF(NULL, "fpf", 1, "First pass statistics file name"); 68static const arg_def_t min_q_arg = 69 ARG_DEF(NULL, "min-q", 1, "Minimum quantizer"); 70static const arg_def_t max_q_arg = 71 ARG_DEF(NULL, "max-q", 1, "Maximum quantizer"); 72static const arg_def_t min_bitrate_arg = 73 ARG_DEF(NULL, "min-bitrate", 1, "Minimum bitrate"); 74static const arg_def_t max_bitrate_arg = 75 ARG_DEF(NULL, "max-bitrate", 1, "Maximum bitrate"); 76static const arg_def_t lag_in_frame_arg = 77 ARG_DEF(NULL, "lag-in-frames", 1, "Number of frame to input before " 78 "generating any outputs"); 79static const arg_def_t rc_end_usage_arg = 80 ARG_DEF(NULL, "rc-end-usage", 1, "0 - 3: VBR, CBR, CQ, Q"); 81static const arg_def_t speed_arg = 82 ARG_DEF("sp", "speed", 1, "speed configuration"); 83static const arg_def_t aqmode_arg = 84 ARG_DEF("aq", "aqmode", 1, "aq-mode off/on"); 85 86#if CONFIG_VP9_HIGHBITDEPTH 87static const struct arg_enum_list bitdepth_enum[] = { 88 {"8", VPX_BITS_8}, 89 {"10", VPX_BITS_10}, 90 {"12", VPX_BITS_12}, 91 {NULL, 0} 92}; 93 94static const arg_def_t bitdepth_arg = 95 ARG_DEF_ENUM("d", "bit-depth", 1, "Bit depth for codec 8, 10 or 12. ", 96 bitdepth_enum); 97#endif // CONFIG_VP9_HIGHBITDEPTH 98 99 100static const arg_def_t *svc_args[] = { 101 &frames_arg, &width_arg, &height_arg, 102 &timebase_arg, &bitrate_arg, &skip_frames_arg, &spatial_layers_arg, 103 &kf_dist_arg, &scale_factors_arg, &passes_arg, &pass_arg, 104 &fpf_name_arg, &min_q_arg, &max_q_arg, &min_bitrate_arg, 105 &max_bitrate_arg, &temporal_layers_arg, &temporal_layering_mode_arg, 106 &lag_in_frame_arg, &threads_arg, &aqmode_arg, 107#if OUTPUT_RC_STATS 108 &output_rc_stats_arg, 109#endif 110 111#if CONFIG_VP9_HIGHBITDEPTH 112 &bitdepth_arg, 113#endif 114 &speed_arg, 115 &rc_end_usage_arg, NULL 116}; 117 118static const uint32_t default_frames_to_skip = 0; 119static const uint32_t default_frames_to_code = 60 * 60; 120static const uint32_t default_width = 1920; 121static const uint32_t default_height = 1080; 122static const uint32_t default_timebase_num = 1; 123static const uint32_t default_timebase_den = 60; 124static const uint32_t default_bitrate = 1000; 125static const uint32_t default_spatial_layers = 5; 126static const uint32_t default_temporal_layers = 1; 127static const uint32_t default_kf_dist = 100; 128static const uint32_t default_temporal_layering_mode = 0; 129static const uint32_t default_output_rc_stats = 0; 130static const int32_t default_speed = -1; // -1 means use library default. 131static const uint32_t default_threads = 0; // zero means use library default. 132 133typedef struct { 134 const char *input_filename; 135 const char *output_filename; 136 uint32_t frames_to_code; 137 uint32_t frames_to_skip; 138 struct VpxInputContext input_ctx; 139 stats_io_t rc_stats; 140 int passes; 141 int pass; 142} AppInput; 143 144static const char *exec_name; 145 146void usage_exit(void) { 147 fprintf(stderr, "Usage: %s <options> input_filename output_filename\n", 148 exec_name); 149 fprintf(stderr, "Options:\n"); 150 arg_show_usage(stderr, svc_args); 151 exit(EXIT_FAILURE); 152} 153 154static void parse_command_line(int argc, const char **argv_, 155 AppInput *app_input, SvcContext *svc_ctx, 156 vpx_codec_enc_cfg_t *enc_cfg) { 157 struct arg arg = {0}; 158 char **argv = NULL; 159 char **argi = NULL; 160 char **argj = NULL; 161 vpx_codec_err_t res; 162 int passes = 0; 163 int pass = 0; 164 const char *fpf_file_name = NULL; 165 unsigned int min_bitrate = 0; 166 unsigned int max_bitrate = 0; 167 char string_options[1024] = {0}; 168 169 // initialize SvcContext with parameters that will be passed to vpx_svc_init 170 svc_ctx->log_level = SVC_LOG_DEBUG; 171 svc_ctx->spatial_layers = default_spatial_layers; 172 svc_ctx->temporal_layers = default_temporal_layers; 173 svc_ctx->temporal_layering_mode = default_temporal_layering_mode; 174#if OUTPUT_RC_STATS 175 svc_ctx->output_rc_stat = default_output_rc_stats; 176#endif 177 svc_ctx->speed = default_speed; 178 svc_ctx->threads = default_threads; 179 180 // start with default encoder configuration 181 res = vpx_codec_enc_config_default(vpx_codec_vp9_cx(), enc_cfg, 0); 182 if (res) { 183 die("Failed to get config: %s\n", vpx_codec_err_to_string(res)); 184 } 185 // update enc_cfg with app default values 186 enc_cfg->g_w = default_width; 187 enc_cfg->g_h = default_height; 188 enc_cfg->g_timebase.num = default_timebase_num; 189 enc_cfg->g_timebase.den = default_timebase_den; 190 enc_cfg->rc_target_bitrate = default_bitrate; 191 enc_cfg->kf_min_dist = default_kf_dist; 192 enc_cfg->kf_max_dist = default_kf_dist; 193 enc_cfg->rc_end_usage = VPX_CQ; 194 195 // initialize AppInput with default values 196 app_input->frames_to_code = default_frames_to_code; 197 app_input->frames_to_skip = default_frames_to_skip; 198 199 // process command line options 200 argv = argv_dup(argc - 1, argv_ + 1); 201 for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) { 202 arg.argv_step = 1; 203 204 if (arg_match(&arg, &frames_arg, argi)) { 205 app_input->frames_to_code = arg_parse_uint(&arg); 206 } else if (arg_match(&arg, &width_arg, argi)) { 207 enc_cfg->g_w = arg_parse_uint(&arg); 208 } else if (arg_match(&arg, &height_arg, argi)) { 209 enc_cfg->g_h = arg_parse_uint(&arg); 210 } else if (arg_match(&arg, &timebase_arg, argi)) { 211 enc_cfg->g_timebase = arg_parse_rational(&arg); 212 } else if (arg_match(&arg, &bitrate_arg, argi)) { 213 enc_cfg->rc_target_bitrate = arg_parse_uint(&arg); 214 } else if (arg_match(&arg, &skip_frames_arg, argi)) { 215 app_input->frames_to_skip = arg_parse_uint(&arg); 216 } else if (arg_match(&arg, &spatial_layers_arg, argi)) { 217 svc_ctx->spatial_layers = arg_parse_uint(&arg); 218 } else if (arg_match(&arg, &temporal_layers_arg, argi)) { 219 svc_ctx->temporal_layers = arg_parse_uint(&arg); 220#if OUTPUT_RC_STATS 221 } else if (arg_match(&arg, &output_rc_stats_arg, argi)) { 222 svc_ctx->output_rc_stat = arg_parse_uint(&arg); 223#endif 224 } else if (arg_match(&arg, &speed_arg, argi)) { 225 svc_ctx->speed = arg_parse_uint(&arg); 226 } else if (arg_match(&arg, &aqmode_arg, argi)) { 227 svc_ctx->aqmode = arg_parse_uint(&arg); 228 } else if (arg_match(&arg, &threads_arg, argi)) { 229 svc_ctx->threads = arg_parse_uint(&arg); 230 } else if (arg_match(&arg, &temporal_layering_mode_arg, argi)) { 231 svc_ctx->temporal_layering_mode = 232 enc_cfg->temporal_layering_mode = arg_parse_int(&arg); 233 if (svc_ctx->temporal_layering_mode) { 234 enc_cfg->g_error_resilient = 1; 235 } 236 } else if (arg_match(&arg, &kf_dist_arg, argi)) { 237 enc_cfg->kf_min_dist = arg_parse_uint(&arg); 238 enc_cfg->kf_max_dist = enc_cfg->kf_min_dist; 239 } else if (arg_match(&arg, &scale_factors_arg, argi)) { 240 snprintf(string_options, sizeof(string_options), "%s scale-factors=%s", 241 string_options, arg.val); 242 } else if (arg_match(&arg, &passes_arg, argi)) { 243 passes = arg_parse_uint(&arg); 244 if (passes < 1 || passes > 2) { 245 die("Error: Invalid number of passes (%d)\n", passes); 246 } 247 } else if (arg_match(&arg, &pass_arg, argi)) { 248 pass = arg_parse_uint(&arg); 249 if (pass < 1 || pass > 2) { 250 die("Error: Invalid pass selected (%d)\n", pass); 251 } 252 } else if (arg_match(&arg, &fpf_name_arg, argi)) { 253 fpf_file_name = arg.val; 254 } else if (arg_match(&arg, &min_q_arg, argi)) { 255 snprintf(string_options, sizeof(string_options), "%s min-quantizers=%s", 256 string_options, arg.val); 257 } else if (arg_match(&arg, &max_q_arg, argi)) { 258 snprintf(string_options, sizeof(string_options), "%s max-quantizers=%s", 259 string_options, arg.val); 260 } else if (arg_match(&arg, &min_bitrate_arg, argi)) { 261 min_bitrate = arg_parse_uint(&arg); 262 } else if (arg_match(&arg, &max_bitrate_arg, argi)) { 263 max_bitrate = arg_parse_uint(&arg); 264 } else if (arg_match(&arg, &lag_in_frame_arg, argi)) { 265 enc_cfg->g_lag_in_frames = arg_parse_uint(&arg); 266 } else if (arg_match(&arg, &rc_end_usage_arg, argi)) { 267 enc_cfg->rc_end_usage = arg_parse_uint(&arg); 268#if CONFIG_VP9_HIGHBITDEPTH 269 } else if (arg_match(&arg, &bitdepth_arg, argi)) { 270 enc_cfg->g_bit_depth = arg_parse_enum_or_int(&arg); 271 switch (enc_cfg->g_bit_depth) { 272 case VPX_BITS_8: 273 enc_cfg->g_input_bit_depth = 8; 274 enc_cfg->g_profile = 0; 275 break; 276 case VPX_BITS_10: 277 enc_cfg->g_input_bit_depth = 10; 278 enc_cfg->g_profile = 2; 279 break; 280 case VPX_BITS_12: 281 enc_cfg->g_input_bit_depth = 12; 282 enc_cfg->g_profile = 2; 283 break; 284 default: 285 die("Error: Invalid bit depth selected (%d)\n", enc_cfg->g_bit_depth); 286 break; 287 } 288#endif // CONFIG_VP9_HIGHBITDEPTH 289 } else { 290 ++argj; 291 } 292 } 293 294 // There will be a space in front of the string options 295 if (strlen(string_options) > 0) 296 vpx_svc_set_options(svc_ctx, string_options + 1); 297 298 if (passes == 0 || passes == 1) { 299 if (pass) { 300 fprintf(stderr, "pass is ignored since there's only one pass\n"); 301 } 302 enc_cfg->g_pass = VPX_RC_ONE_PASS; 303 } else { 304 if (pass == 0) { 305 die("pass must be specified when passes is 2\n"); 306 } 307 308 if (fpf_file_name == NULL) { 309 die("fpf must be specified when passes is 2\n"); 310 } 311 312 if (pass == 1) { 313 enc_cfg->g_pass = VPX_RC_FIRST_PASS; 314 if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 0)) { 315 fatal("Failed to open statistics store"); 316 } 317 } else { 318 enc_cfg->g_pass = VPX_RC_LAST_PASS; 319 if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 1)) { 320 fatal("Failed to open statistics store"); 321 } 322 enc_cfg->rc_twopass_stats_in = stats_get(&app_input->rc_stats); 323 } 324 app_input->passes = passes; 325 app_input->pass = pass; 326 } 327 328 if (enc_cfg->rc_target_bitrate > 0) { 329 if (min_bitrate > 0) { 330 enc_cfg->rc_2pass_vbr_minsection_pct = 331 min_bitrate * 100 / enc_cfg->rc_target_bitrate; 332 } 333 if (max_bitrate > 0) { 334 enc_cfg->rc_2pass_vbr_maxsection_pct = 335 max_bitrate * 100 / enc_cfg->rc_target_bitrate; 336 } 337 } 338 339 // Check for unrecognized options 340 for (argi = argv; *argi; ++argi) 341 if (argi[0][0] == '-' && strlen(argi[0]) > 1) 342 die("Error: Unrecognized option %s\n", *argi); 343 344 if (argv[0] == NULL || argv[1] == 0) { 345 usage_exit(); 346 } 347 app_input->input_filename = argv[0]; 348 app_input->output_filename = argv[1]; 349 free(argv); 350 351 if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 || 352 enc_cfg->g_h % 2) 353 die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h); 354 355 printf( 356 "Codec %s\nframes: %d, skip: %d\n" 357 "layers: %d\n" 358 "width %d, height: %d,\n" 359 "num: %d, den: %d, bitrate: %d,\n" 360 "gop size: %d\n", 361 vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code, 362 app_input->frames_to_skip, 363 svc_ctx->spatial_layers, enc_cfg->g_w, enc_cfg->g_h, 364 enc_cfg->g_timebase.num, enc_cfg->g_timebase.den, 365 enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist); 366} 367 368#if OUTPUT_RC_STATS 369// For rate control encoding stats. 370struct RateControlStats { 371 // Number of input frames per layer. 372 int layer_input_frames[VPX_MAX_LAYERS]; 373 // Total (cumulative) number of encoded frames per layer. 374 int layer_tot_enc_frames[VPX_MAX_LAYERS]; 375 // Number of encoded non-key frames per layer. 376 int layer_enc_frames[VPX_MAX_LAYERS]; 377 // Framerate per layer (cumulative). 378 double layer_framerate[VPX_MAX_LAYERS]; 379 // Target average frame size per layer (per-frame-bandwidth per layer). 380 double layer_pfb[VPX_MAX_LAYERS]; 381 // Actual average frame size per layer. 382 double layer_avg_frame_size[VPX_MAX_LAYERS]; 383 // Average rate mismatch per layer (|target - actual| / target). 384 double layer_avg_rate_mismatch[VPX_MAX_LAYERS]; 385 // Actual encoding bitrate per layer (cumulative). 386 double layer_encoding_bitrate[VPX_MAX_LAYERS]; 387 // Average of the short-time encoder actual bitrate. 388 // TODO(marpan): Should we add these short-time stats for each layer? 389 double avg_st_encoding_bitrate; 390 // Variance of the short-time encoder actual bitrate. 391 double variance_st_encoding_bitrate; 392 // Window (number of frames) for computing short-time encoding bitrate. 393 int window_size; 394 // Number of window measurements. 395 int window_count; 396}; 397 398// Note: these rate control stats assume only 1 key frame in the 399// sequence (i.e., first frame only). 400static void set_rate_control_stats(struct RateControlStats *rc, 401 vpx_codec_enc_cfg_t *cfg) { 402 unsigned int sl, tl; 403 // Set the layer (cumulative) framerate and the target layer (non-cumulative) 404 // per-frame-bandwidth, for the rate control encoding stats below. 405 const double framerate = cfg->g_timebase.den / cfg->g_timebase.num; 406 407 for (sl = 0; sl < cfg->ss_number_layers; ++sl) { 408 for (tl = 0; tl < cfg->ts_number_layers; ++tl) { 409 const int layer = sl * cfg->ts_number_layers + tl; 410 const int tlayer0 = sl * cfg->ts_number_layers; 411 rc->layer_framerate[layer] = 412 framerate / cfg->ts_rate_decimator[tl]; 413 if (tl > 0) { 414 rc->layer_pfb[layer] = 1000.0 * 415 (cfg->layer_target_bitrate[layer] - 416 cfg->layer_target_bitrate[layer - 1]) / 417 (rc->layer_framerate[layer] - 418 rc->layer_framerate[layer - 1]); 419 } else { 420 rc->layer_pfb[tlayer0] = 1000.0 * 421 cfg->layer_target_bitrate[tlayer0] / 422 rc->layer_framerate[tlayer0]; 423 } 424 rc->layer_input_frames[layer] = 0; 425 rc->layer_enc_frames[layer] = 0; 426 rc->layer_tot_enc_frames[layer] = 0; 427 rc->layer_encoding_bitrate[layer] = 0.0; 428 rc->layer_avg_frame_size[layer] = 0.0; 429 rc->layer_avg_rate_mismatch[layer] = 0.0; 430 } 431 } 432 rc->window_count = 0; 433 rc->window_size = 15; 434 rc->avg_st_encoding_bitrate = 0.0; 435 rc->variance_st_encoding_bitrate = 0.0; 436} 437 438static void printout_rate_control_summary(struct RateControlStats *rc, 439 vpx_codec_enc_cfg_t *cfg, 440 int frame_cnt) { 441 unsigned int sl, tl; 442 int tot_num_frames = 0; 443 double perc_fluctuation = 0.0; 444 printf("Total number of processed frames: %d\n\n", frame_cnt - 1); 445 printf("Rate control layer stats for sl%d tl%d layer(s):\n\n", 446 cfg->ss_number_layers, cfg->ts_number_layers); 447 for (sl = 0; sl < cfg->ss_number_layers; ++sl) { 448 for (tl = 0; tl < cfg->ts_number_layers; ++tl) { 449 const int layer = sl * cfg->ts_number_layers + tl; 450 const int num_dropped = (tl > 0) ? 451 (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer]) : 452 (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer] - 1); 453 if (!sl) 454 tot_num_frames += rc->layer_input_frames[layer]; 455 rc->layer_encoding_bitrate[layer] = 0.001 * rc->layer_framerate[layer] * 456 rc->layer_encoding_bitrate[layer] / tot_num_frames; 457 rc->layer_avg_frame_size[layer] = rc->layer_avg_frame_size[layer] / 458 rc->layer_enc_frames[layer]; 459 rc->layer_avg_rate_mismatch[layer] = 460 100.0 * rc->layer_avg_rate_mismatch[layer] / 461 rc->layer_enc_frames[layer]; 462 printf("For layer#: sl%d tl%d \n", sl, tl); 463 printf("Bitrate (target vs actual): %d %f.0 kbps\n", 464 cfg->layer_target_bitrate[layer], 465 rc->layer_encoding_bitrate[layer]); 466 printf("Average frame size (target vs actual): %f %f bits\n", 467 rc->layer_pfb[layer], rc->layer_avg_frame_size[layer]); 468 printf("Average rate_mismatch: %f\n", 469 rc->layer_avg_rate_mismatch[layer]); 470 printf("Number of input frames, encoded (non-key) frames, " 471 "and percent dropped frames: %d %d %f.0 \n", 472 rc->layer_input_frames[layer], rc->layer_enc_frames[layer], 473 100.0 * num_dropped / rc->layer_input_frames[layer]); 474 printf("\n"); 475 } 476 } 477 rc->avg_st_encoding_bitrate = rc->avg_st_encoding_bitrate / rc->window_count; 478 rc->variance_st_encoding_bitrate = 479 rc->variance_st_encoding_bitrate / rc->window_count - 480 (rc->avg_st_encoding_bitrate * rc->avg_st_encoding_bitrate); 481 perc_fluctuation = 100.0 * sqrt(rc->variance_st_encoding_bitrate) / 482 rc->avg_st_encoding_bitrate; 483 printf("Short-time stats, for window of %d frames: \n", rc->window_size); 484 printf("Average, rms-variance, and percent-fluct: %f %f %f \n", 485 rc->avg_st_encoding_bitrate, 486 sqrt(rc->variance_st_encoding_bitrate), 487 perc_fluctuation); 488 if (frame_cnt != tot_num_frames) 489 die("Error: Number of input frames not equal to output encoded frames != " 490 "%d tot_num_frames = %d\n", frame_cnt, tot_num_frames); 491} 492 493vpx_codec_err_t parse_superframe_index(const uint8_t *data, 494 size_t data_sz, 495 uint32_t sizes[8], int *count) { 496 // A chunk ending with a byte matching 0xc0 is an invalid chunk unless 497 // it is a super frame index. If the last byte of real video compression 498 // data is 0xc0 the encoder must add a 0 byte. If we have the marker but 499 // not the associated matching marker byte at the front of the index we have 500 // an invalid bitstream and need to return an error. 501 502 uint8_t marker; 503 504 marker = *(data + data_sz - 1); 505 *count = 0; 506 507 508 if ((marker & 0xe0) == 0xc0) { 509 const uint32_t frames = (marker & 0x7) + 1; 510 const uint32_t mag = ((marker >> 3) & 0x3) + 1; 511 const size_t index_sz = 2 + mag * frames; 512 513 // This chunk is marked as having a superframe index but doesn't have 514 // enough data for it, thus it's an invalid superframe index. 515 if (data_sz < index_sz) 516 return VPX_CODEC_CORRUPT_FRAME; 517 518 { 519 const uint8_t marker2 = *(data + data_sz - index_sz); 520 521 // This chunk is marked as having a superframe index but doesn't have 522 // the matching marker byte at the front of the index therefore it's an 523 // invalid chunk. 524 if (marker != marker2) 525 return VPX_CODEC_CORRUPT_FRAME; 526 } 527 528 { 529 // Found a valid superframe index. 530 uint32_t i, j; 531 const uint8_t *x = &data[data_sz - index_sz + 1]; 532 533 for (i = 0; i < frames; ++i) { 534 uint32_t this_sz = 0; 535 536 for (j = 0; j < mag; ++j) 537 this_sz |= (*x++) << (j * 8); 538 sizes[i] = this_sz; 539 } 540 *count = frames; 541 } 542 } 543 return VPX_CODEC_OK; 544} 545#endif 546 547// Example pattern for spatial layers and 2 temporal layers used in the 548// bypass/flexible mode. The pattern corresponds to the pattern 549// VP9E_TEMPORAL_LAYERING_MODE_0101 (temporal_layering_mode == 2) used in 550// non-flexible mode. 551void set_frame_flags_bypass_mode(int sl, int tl, int num_spatial_layers, 552 int is_key_frame, 553 vpx_svc_ref_frame_config_t *ref_frame_config) { 554 for (sl = 0; sl < num_spatial_layers; ++sl) { 555 if (!tl) { 556 if (!sl) { 557 ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_GF | 558 VP8_EFLAG_NO_REF_ARF | 559 VP8_EFLAG_NO_UPD_GF | 560 VP8_EFLAG_NO_UPD_ARF; 561 } else { 562 if (is_key_frame) { 563 ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_LAST | 564 VP8_EFLAG_NO_REF_ARF | 565 VP8_EFLAG_NO_UPD_GF | 566 VP8_EFLAG_NO_UPD_ARF; 567 } else { 568 ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_ARF | 569 VP8_EFLAG_NO_UPD_GF | 570 VP8_EFLAG_NO_UPD_ARF; 571 } 572 } 573 } else if (tl == 1) { 574 if (!sl) { 575 ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_GF | 576 VP8_EFLAG_NO_REF_ARF | 577 VP8_EFLAG_NO_UPD_LAST | 578 VP8_EFLAG_NO_UPD_GF; 579 } else { 580 ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_ARF | 581 VP8_EFLAG_NO_UPD_LAST | 582 VP8_EFLAG_NO_UPD_GF; 583 } 584 } 585 if (tl == 0) { 586 ref_frame_config->lst_fb_idx[sl] = sl; 587 if (sl) 588 ref_frame_config->gld_fb_idx[sl] = sl - 1; 589 else 590 ref_frame_config->gld_fb_idx[sl] = 0; 591 ref_frame_config->alt_fb_idx[sl] = 0; 592 } else if (tl == 1) { 593 ref_frame_config->lst_fb_idx[sl] = sl; 594 ref_frame_config->gld_fb_idx[sl] = num_spatial_layers + sl - 1; 595 ref_frame_config->alt_fb_idx[sl] = num_spatial_layers + sl; 596 } 597 } 598} 599 600int main(int argc, const char **argv) { 601 AppInput app_input = {0}; 602 VpxVideoWriter *writer = NULL; 603 VpxVideoInfo info = {0}; 604 vpx_codec_ctx_t codec; 605 vpx_codec_enc_cfg_t enc_cfg; 606 SvcContext svc_ctx; 607 uint32_t i; 608 uint32_t frame_cnt = 0; 609 vpx_image_t raw; 610 vpx_codec_err_t res; 611 int pts = 0; /* PTS starts at 0 */ 612 int frame_duration = 1; /* 1 timebase tick per frame */ 613 FILE *infile = NULL; 614 int end_of_stream = 0; 615 int frames_received = 0; 616#if OUTPUT_RC_STATS 617 VpxVideoWriter *outfile[VPX_TS_MAX_LAYERS] = {NULL}; 618 struct RateControlStats rc; 619 vpx_svc_layer_id_t layer_id; 620 vpx_svc_ref_frame_config_t ref_frame_config; 621 int sl, tl; 622 double sum_bitrate = 0.0; 623 double sum_bitrate2 = 0.0; 624 double framerate = 30.0; 625#endif 626 struct vpx_usec_timer timer; 627 int64_t cx_time = 0; 628 memset(&svc_ctx, 0, sizeof(svc_ctx)); 629 svc_ctx.log_print = 1; 630 exec_name = argv[0]; 631 parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg); 632 633 // Allocate image buffer 634#if CONFIG_VP9_HIGHBITDEPTH 635 if (!vpx_img_alloc(&raw, enc_cfg.g_input_bit_depth == 8 ? 636 VPX_IMG_FMT_I420 : VPX_IMG_FMT_I42016, 637 enc_cfg.g_w, enc_cfg.g_h, 32)) { 638 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h); 639 } 640#else 641 if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32)) { 642 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h); 643 } 644#endif // CONFIG_VP9_HIGHBITDEPTH 645 646 if (!(infile = fopen(app_input.input_filename, "rb"))) 647 die("Failed to open %s for reading\n", app_input.input_filename); 648 649 // Initialize codec 650 if (vpx_svc_init(&svc_ctx, &codec, vpx_codec_vp9_cx(), &enc_cfg) != 651 VPX_CODEC_OK) 652 die("Failed to initialize encoder\n"); 653 654#if OUTPUT_RC_STATS 655 if (svc_ctx.output_rc_stat) { 656 set_rate_control_stats(&rc, &enc_cfg); 657 framerate = enc_cfg.g_timebase.den / enc_cfg.g_timebase.num; 658 } 659#endif 660 661 info.codec_fourcc = VP9_FOURCC; 662 info.time_base.numerator = enc_cfg.g_timebase.num; 663 info.time_base.denominator = enc_cfg.g_timebase.den; 664 665 if (!(app_input.passes == 2 && app_input.pass == 1)) { 666 // We don't save the bitstream for the 1st pass on two pass rate control 667 writer = vpx_video_writer_open(app_input.output_filename, kContainerIVF, 668 &info); 669 if (!writer) 670 die("Failed to open %s for writing\n", app_input.output_filename); 671 } 672#if OUTPUT_RC_STATS 673 // For now, just write temporal layer streams. 674 // TODO(wonkap): do spatial by re-writing superframe. 675 if (svc_ctx.output_rc_stat) { 676 for (tl = 0; tl < enc_cfg.ts_number_layers; ++tl) { 677 char file_name[PATH_MAX]; 678 679 snprintf(file_name, sizeof(file_name), "%s_t%d.ivf", 680 app_input.output_filename, tl); 681 outfile[tl] = vpx_video_writer_open(file_name, kContainerIVF, &info); 682 if (!outfile[tl]) 683 die("Failed to open %s for writing", file_name); 684 } 685 } 686#endif 687 688 // skip initial frames 689 for (i = 0; i < app_input.frames_to_skip; ++i) 690 vpx_img_read(&raw, infile); 691 692 if (svc_ctx.speed != -1) 693 vpx_codec_control(&codec, VP8E_SET_CPUUSED, svc_ctx.speed); 694 if (svc_ctx.threads) 695 vpx_codec_control(&codec, VP9E_SET_TILE_COLUMNS, (svc_ctx.threads >> 1)); 696 if (svc_ctx.speed >= 5 && svc_ctx.aqmode == 1) 697 vpx_codec_control(&codec, VP9E_SET_AQ_MODE, 3); 698 699 700 // Encode frames 701 while (!end_of_stream) { 702 vpx_codec_iter_t iter = NULL; 703 const vpx_codec_cx_pkt_t *cx_pkt; 704 if (frame_cnt >= app_input.frames_to_code || !vpx_img_read(&raw, infile)) { 705 // We need one extra vpx_svc_encode call at end of stream to flush 706 // encoder and get remaining data 707 end_of_stream = 1; 708 } 709 710 // For BYPASS/FLEXIBLE mode, set the frame flags (reference and updates) 711 // and the buffer indices for each spatial layer of the current 712 // (super)frame to be encoded. The temporal layer_id for the current frame 713 // also needs to be set. 714 // TODO(marpan): Should rename the "VP9E_TEMPORAL_LAYERING_MODE_BYPASS" 715 // mode to "VP9E_LAYERING_MODE_BYPASS". 716 if (svc_ctx.temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_BYPASS) { 717 // Example for 2 temporal layers. 718 if (frame_cnt % 2 == 0) 719 layer_id.temporal_layer_id = 0; 720 else 721 layer_id.temporal_layer_id = 1; 722 // Note that we only set the temporal layer_id, since we are calling 723 // the encode for the whole superframe. The encoder will internally loop 724 // over all the spatial layers for the current superframe. 725 vpx_codec_control(&codec, VP9E_SET_SVC_LAYER_ID, &layer_id); 726 set_frame_flags_bypass_mode(sl, layer_id.temporal_layer_id, 727 svc_ctx.spatial_layers, 728 frame_cnt == 0, 729 &ref_frame_config); 730 vpx_codec_control(&codec, VP9E_SET_SVC_REF_FRAME_CONFIG, 731 &ref_frame_config); 732 } 733 734 vpx_usec_timer_start(&timer); 735 res = vpx_svc_encode(&svc_ctx, &codec, (end_of_stream ? NULL : &raw), 736 pts, frame_duration, svc_ctx.speed >= 5 ? 737 VPX_DL_REALTIME : VPX_DL_GOOD_QUALITY); 738 vpx_usec_timer_mark(&timer); 739 cx_time += vpx_usec_timer_elapsed(&timer); 740 741 printf("%s", vpx_svc_get_message(&svc_ctx)); 742 if (res != VPX_CODEC_OK) { 743 die_codec(&codec, "Failed to encode frame"); 744 } 745 746 while ((cx_pkt = vpx_codec_get_cx_data(&codec, &iter)) != NULL) { 747 switch (cx_pkt->kind) { 748 case VPX_CODEC_CX_FRAME_PKT: { 749 if (cx_pkt->data.frame.sz > 0) { 750#if OUTPUT_RC_STATS 751 uint32_t sizes[8]; 752 int count = 0; 753#endif 754 vpx_video_writer_write_frame(writer, 755 cx_pkt->data.frame.buf, 756 cx_pkt->data.frame.sz, 757 cx_pkt->data.frame.pts); 758#if OUTPUT_RC_STATS 759 // TODO(marpan/wonkap): Put this (to line728) in separate function. 760 if (svc_ctx.output_rc_stat) { 761 vpx_codec_control(&codec, VP9E_GET_SVC_LAYER_ID, &layer_id); 762 parse_superframe_index(cx_pkt->data.frame.buf, 763 cx_pkt->data.frame.sz, sizes, &count); 764 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) { 765 ++rc.layer_input_frames[sl * enc_cfg.ts_number_layers + 766 layer_id.temporal_layer_id]; 767 } 768 for (tl = layer_id.temporal_layer_id; 769 tl < enc_cfg.ts_number_layers; ++tl) { 770 vpx_video_writer_write_frame(outfile[tl], 771 cx_pkt->data.frame.buf, 772 cx_pkt->data.frame.sz, 773 cx_pkt->data.frame.pts); 774 } 775 776 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) { 777 for (tl = layer_id.temporal_layer_id; 778 tl < enc_cfg.ts_number_layers; ++tl) { 779 const int layer = sl * enc_cfg.ts_number_layers + tl; 780 ++rc.layer_tot_enc_frames[layer]; 781 rc.layer_encoding_bitrate[layer] += 8.0 * sizes[sl]; 782 // Keep count of rate control stats per layer, for non-key 783 // frames. 784 if (tl == layer_id.temporal_layer_id && 785 !(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY)) { 786 rc.layer_avg_frame_size[layer] += 8.0 * sizes[sl]; 787 rc.layer_avg_rate_mismatch[layer] += 788 fabs(8.0 * sizes[sl] - rc.layer_pfb[layer]) / 789 rc.layer_pfb[layer]; 790 ++rc.layer_enc_frames[layer]; 791 } 792 } 793 } 794 795 // Update for short-time encoding bitrate states, for moving 796 // window of size rc->window, shifted by rc->window / 2. 797 // Ignore first window segment, due to key frame. 798 if (frame_cnt > rc.window_size) { 799 tl = layer_id.temporal_layer_id; 800 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) { 801 sum_bitrate += 0.001 * 8.0 * sizes[sl] * framerate; 802 } 803 if (frame_cnt % rc.window_size == 0) { 804 rc.window_count += 1; 805 rc.avg_st_encoding_bitrate += sum_bitrate / rc.window_size; 806 rc.variance_st_encoding_bitrate += 807 (sum_bitrate / rc.window_size) * 808 (sum_bitrate / rc.window_size); 809 sum_bitrate = 0.0; 810 } 811 } 812 813 // Second shifted window. 814 if (frame_cnt > rc.window_size + rc.window_size / 2) { 815 tl = layer_id.temporal_layer_id; 816 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) { 817 sum_bitrate2 += 0.001 * 8.0 * sizes[sl] * framerate; 818 } 819 820 if (frame_cnt > 2 * rc.window_size && 821 frame_cnt % rc.window_size == 0) { 822 rc.window_count += 1; 823 rc.avg_st_encoding_bitrate += sum_bitrate2 / rc.window_size; 824 rc.variance_st_encoding_bitrate += 825 (sum_bitrate2 / rc.window_size) * 826 (sum_bitrate2 / rc.window_size); 827 sum_bitrate2 = 0.0; 828 } 829 } 830 } 831#endif 832 } 833 834 printf("SVC frame: %d, kf: %d, size: %d, pts: %d\n", frames_received, 835 !!(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY), 836 (int)cx_pkt->data.frame.sz, (int)cx_pkt->data.frame.pts); 837 ++frames_received; 838 break; 839 } 840 case VPX_CODEC_STATS_PKT: { 841 stats_write(&app_input.rc_stats, 842 cx_pkt->data.twopass_stats.buf, 843 cx_pkt->data.twopass_stats.sz); 844 break; 845 } 846 default: { 847 break; 848 } 849 } 850 } 851 852 if (!end_of_stream) { 853 ++frame_cnt; 854 pts += frame_duration; 855 } 856 } 857 printf("Processed %d frames\n", frame_cnt); 858 fclose(infile); 859#if OUTPUT_RC_STATS 860 if (svc_ctx.output_rc_stat) { 861 printout_rate_control_summary(&rc, &enc_cfg, frame_cnt); 862 printf("\n"); 863 } 864#endif 865 if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec"); 866 if (app_input.passes == 2) 867 stats_close(&app_input.rc_stats, 1); 868 if (writer) { 869 vpx_video_writer_close(writer); 870 } 871#if OUTPUT_RC_STATS 872 if (svc_ctx.output_rc_stat) { 873 for (tl = 0; tl < enc_cfg.ts_number_layers; ++tl) { 874 vpx_video_writer_close(outfile[tl]); 875 } 876 } 877#endif 878 printf("Frame cnt and encoding time/FPS stats for encoding: %d %f %f \n", 879 frame_cnt, 880 1000 * (float)cx_time / (double)(frame_cnt * 1000000), 881 1000000 * (double)frame_cnt / (double)cx_time); 882 vpx_img_free(&raw); 883 // display average size, psnr 884 printf("%s", vpx_svc_dump_statistics(&svc_ctx)); 885 vpx_svc_release(&svc_ctx); 886 return EXIT_SUCCESS; 887} 888