1 /* 2 * Copyright (c) 2013 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 * @file 13 * VP9 SVC encoding support via libvpx 14 */ 15 16 #include <assert.h> 17 #include <math.h> 18 #include <limits.h> 19 #include <stdarg.h> 20 #include <stdio.h> 21 #include <stdlib.h> 22 #include <string.h> 23 #define VPX_DISABLE_CTRL_TYPECHECKS 1 24 #include "./vpx_config.h" 25 #include "vpx/svc_context.h" 26 #include "vpx/vp8cx.h" 27 #include "vpx/vpx_encoder.h" 28 #include "vpx_mem/vpx_mem.h" 29 #include "vp9/common/vp9_onyxc_int.h" 30 31 #ifdef __MINGW32__ 32 #define strtok_r strtok_s 33 #ifndef MINGW_HAS_SECURE_API 34 // proto from /usr/x86_64-w64-mingw32/include/sec_api/string_s.h 35 _CRTIMP char *__cdecl strtok_s(char *str, const char *delim, char **context); 36 #endif /* MINGW_HAS_SECURE_API */ 37 #endif /* __MINGW32__ */ 38 39 #ifdef _MSC_VER 40 #define strdup _strdup 41 #define strtok_r strtok_s 42 #endif 43 44 #define SVC_REFERENCE_FRAMES 8 45 #define SUPERFRAME_SLOTS (8) 46 #define SUPERFRAME_BUFFER_SIZE (SUPERFRAME_SLOTS * sizeof(uint32_t) + 2) 47 #define OPTION_BUFFER_SIZE 1024 48 #define COMPONENTS 4 // psnr & sse statistics maintained for total, y, u, v 49 50 #define MAX_QUANTIZER 63 51 52 static const int DEFAULT_SCALE_FACTORS_NUM[VPX_SS_MAX_LAYERS] = { 53 4, 5, 7, 11, 16 54 }; 55 56 static const int DEFAULT_SCALE_FACTORS_DEN[VPX_SS_MAX_LAYERS] = { 57 16, 16, 16, 16, 16 58 }; 59 60 typedef enum { 61 QUANTIZER = 0, 62 BITRATE, 63 SCALE_FACTOR, 64 AUTO_ALT_REF, 65 ALL_OPTION_TYPES 66 } LAYER_OPTION_TYPE; 67 68 static const int option_max_values[ALL_OPTION_TYPES] = { 69 63, INT_MAX, INT_MAX, 1 70 }; 71 72 static const int option_min_values[ALL_OPTION_TYPES] = { 73 0, 0, 1, 0 74 }; 75 76 // One encoded frame 77 typedef struct FrameData { 78 void *buf; // compressed data buffer 79 size_t size; // length of compressed data 80 vpx_codec_frame_flags_t flags; /**< flags for this frame */ 81 struct FrameData *next; 82 } FrameData; 83 84 typedef struct SvcInternal { 85 char options[OPTION_BUFFER_SIZE]; // set by vpx_svc_set_options 86 87 // values extracted from option, quantizers 88 vpx_svc_extra_cfg_t svc_params; 89 int enable_auto_alt_ref[VPX_SS_MAX_LAYERS]; 90 int bitrates[VPX_SS_MAX_LAYERS]; 91 92 // accumulated statistics 93 double psnr_sum[VPX_SS_MAX_LAYERS][COMPONENTS]; // total/Y/U/V 94 uint64_t sse_sum[VPX_SS_MAX_LAYERS][COMPONENTS]; 95 uint32_t bytes_sum[VPX_SS_MAX_LAYERS]; 96 97 // codec encoding values 98 int width; // width of highest layer 99 int height; // height of highest layer 100 int kf_dist; // distance between keyframes 101 102 // state variables 103 int psnr_pkt_received; 104 int layer; 105 int use_multiple_frame_contexts; 106 107 char message_buffer[2048]; 108 vpx_codec_ctx_t *codec_ctx; 109 } SvcInternal; 110 111 static SvcInternal *get_svc_internal(SvcContext *svc_ctx) { 112 if (svc_ctx == NULL) return NULL; 113 if (svc_ctx->internal == NULL) { 114 SvcInternal *const si = (SvcInternal *)malloc(sizeof(*si)); 115 if (si != NULL) { 116 memset(si, 0, sizeof(*si)); 117 } 118 svc_ctx->internal = si; 119 } 120 return (SvcInternal *)svc_ctx->internal; 121 } 122 123 static const SvcInternal *get_const_svc_internal(const SvcContext *svc_ctx) { 124 if (svc_ctx == NULL) return NULL; 125 return (const SvcInternal *)svc_ctx->internal; 126 } 127 128 static void svc_log_reset(SvcContext *svc_ctx) { 129 SvcInternal *const si = (SvcInternal *)svc_ctx->internal; 130 si->message_buffer[0] = '\0'; 131 } 132 133 static int svc_log(SvcContext *svc_ctx, SVC_LOG_LEVEL level, 134 const char *fmt, ...) { 135 char buf[512]; 136 int retval = 0; 137 va_list ap; 138 SvcInternal *const si = get_svc_internal(svc_ctx); 139 140 if (level > svc_ctx->log_level) { 141 return retval; 142 } 143 144 va_start(ap, fmt); 145 retval = vsnprintf(buf, sizeof(buf), fmt, ap); 146 va_end(ap); 147 148 if (svc_ctx->log_print) { 149 printf("%s", buf); 150 } else { 151 strncat(si->message_buffer, buf, 152 sizeof(si->message_buffer) - strlen(si->message_buffer) - 1); 153 } 154 155 if (level == SVC_LOG_ERROR) { 156 si->codec_ctx->err_detail = si->message_buffer; 157 } 158 return retval; 159 } 160 161 static vpx_codec_err_t extract_option(LAYER_OPTION_TYPE type, 162 char *input, 163 int *value0, 164 int *value1) { 165 if (type == SCALE_FACTOR) { 166 *value0 = strtol(input, &input, 10); 167 if (*input++ != '/') 168 return VPX_CODEC_INVALID_PARAM; 169 *value1 = strtol(input, &input, 10); 170 171 if (*value0 < option_min_values[SCALE_FACTOR] || 172 *value1 < option_min_values[SCALE_FACTOR] || 173 *value0 > option_max_values[SCALE_FACTOR] || 174 *value1 > option_max_values[SCALE_FACTOR] || 175 *value0 > *value1) // num shouldn't be greater than den 176 return VPX_CODEC_INVALID_PARAM; 177 } else { 178 *value0 = atoi(input); 179 if (*value0 < option_min_values[type] || 180 *value0 > option_max_values[type]) 181 return VPX_CODEC_INVALID_PARAM; 182 } 183 return VPX_CODEC_OK; 184 } 185 186 static vpx_codec_err_t parse_layer_options_from_string(SvcContext *svc_ctx, 187 LAYER_OPTION_TYPE type, 188 const char *input, 189 int *option0, 190 int *option1) { 191 int i; 192 vpx_codec_err_t res = VPX_CODEC_OK; 193 char *input_string; 194 char *token; 195 const char *delim = ","; 196 char *save_ptr; 197 198 if (input == NULL || option0 == NULL || 199 (option1 == NULL && type == SCALE_FACTOR)) 200 return VPX_CODEC_INVALID_PARAM; 201 202 input_string = strdup(input); 203 token = strtok_r(input_string, delim, &save_ptr); 204 for (i = 0; i < svc_ctx->spatial_layers; ++i) { 205 if (token != NULL) { 206 res = extract_option(type, token, option0 + i, option1 + i); 207 if (res != VPX_CODEC_OK) 208 break; 209 token = strtok_r(NULL, delim, &save_ptr); 210 } else { 211 break; 212 } 213 } 214 if (res == VPX_CODEC_OK && i != svc_ctx->spatial_layers) { 215 svc_log(svc_ctx, SVC_LOG_ERROR, 216 "svc: layer params type: %d %d values required, " 217 "but only %d specified\n", type, svc_ctx->spatial_layers, i); 218 res = VPX_CODEC_INVALID_PARAM; 219 } 220 free(input_string); 221 return res; 222 } 223 224 /** 225 * Parse SVC encoding options 226 * Format: encoding-mode=<svc_mode>,layers=<layer_count> 227 * scale-factors=<n1>/<d1>,<n2>/<d2>,... 228 * quantizers=<q1>,<q2>,... 229 * svc_mode = [i|ip|alt_ip|gf] 230 */ 231 static vpx_codec_err_t parse_options(SvcContext *svc_ctx, const char *options) { 232 char *input_string; 233 char *option_name; 234 char *option_value; 235 char *input_ptr; 236 SvcInternal *const si = get_svc_internal(svc_ctx); 237 vpx_codec_err_t res = VPX_CODEC_OK; 238 int i, alt_ref_enabled = 0; 239 240 if (options == NULL) return VPX_CODEC_OK; 241 input_string = strdup(options); 242 243 // parse option name 244 option_name = strtok_r(input_string, "=", &input_ptr); 245 while (option_name != NULL) { 246 // parse option value 247 option_value = strtok_r(NULL, " ", &input_ptr); 248 if (option_value == NULL) { 249 svc_log(svc_ctx, SVC_LOG_ERROR, "option missing value: %s\n", 250 option_name); 251 res = VPX_CODEC_INVALID_PARAM; 252 break; 253 } 254 if (strcmp("spatial-layers", option_name) == 0) { 255 svc_ctx->spatial_layers = atoi(option_value); 256 } else if (strcmp("temporal-layers", option_name) == 0) { 257 svc_ctx->temporal_layers = atoi(option_value); 258 } else if (strcmp("scale-factors", option_name) == 0) { 259 res = parse_layer_options_from_string(svc_ctx, SCALE_FACTOR, option_value, 260 si->svc_params.scaling_factor_num, 261 si->svc_params.scaling_factor_den); 262 if (res != VPX_CODEC_OK) break; 263 } else if (strcmp("max-quantizers", option_name) == 0) { 264 res = parse_layer_options_from_string(svc_ctx, QUANTIZER, option_value, 265 si->svc_params.max_quantizers, 266 NULL); 267 if (res != VPX_CODEC_OK) break; 268 } else if (strcmp("min-quantizers", option_name) == 0) { 269 res = parse_layer_options_from_string(svc_ctx, QUANTIZER, option_value, 270 si->svc_params.min_quantizers, 271 NULL); 272 if (res != VPX_CODEC_OK) break; 273 } else if (strcmp("auto-alt-refs", option_name) == 0) { 274 res = parse_layer_options_from_string(svc_ctx, AUTO_ALT_REF, option_value, 275 si->enable_auto_alt_ref, NULL); 276 if (res != VPX_CODEC_OK) break; 277 } else if (strcmp("bitrates", option_name) == 0) { 278 res = parse_layer_options_from_string(svc_ctx, BITRATE, option_value, 279 si->bitrates, NULL); 280 if (res != VPX_CODEC_OK) break; 281 } else if (strcmp("multi-frame-contexts", option_name) == 0) { 282 si->use_multiple_frame_contexts = atoi(option_value); 283 } else { 284 svc_log(svc_ctx, SVC_LOG_ERROR, "invalid option: %s\n", option_name); 285 res = VPX_CODEC_INVALID_PARAM; 286 break; 287 } 288 option_name = strtok_r(NULL, "=", &input_ptr); 289 } 290 free(input_string); 291 292 for (i = 0; i < svc_ctx->spatial_layers; ++i) { 293 if (si->svc_params.max_quantizers[i] > MAX_QUANTIZER || 294 si->svc_params.max_quantizers[i] < 0 || 295 si->svc_params.min_quantizers[i] > si->svc_params.max_quantizers[i] || 296 si->svc_params.min_quantizers[i] < 0) 297 res = VPX_CODEC_INVALID_PARAM; 298 } 299 300 if (si->use_multiple_frame_contexts && 301 (svc_ctx->spatial_layers > 3 || 302 svc_ctx->spatial_layers * svc_ctx->temporal_layers > 4)) 303 res = VPX_CODEC_INVALID_PARAM; 304 305 for (i = 0; i < svc_ctx->spatial_layers; ++i) 306 alt_ref_enabled += si->enable_auto_alt_ref[i]; 307 if (alt_ref_enabled > REF_FRAMES - svc_ctx->spatial_layers) { 308 svc_log(svc_ctx, SVC_LOG_ERROR, 309 "svc: auto alt ref: Maxinum %d(REF_FRAMES - layers) layers could" 310 "enabled auto alt reference frame, but % layers are enabled\n", 311 REF_FRAMES - svc_ctx->spatial_layers, alt_ref_enabled); 312 res = VPX_CODEC_INVALID_PARAM; 313 } 314 315 return res; 316 } 317 318 vpx_codec_err_t vpx_svc_set_options(SvcContext *svc_ctx, const char *options) { 319 SvcInternal *const si = get_svc_internal(svc_ctx); 320 if (svc_ctx == NULL || options == NULL || si == NULL) { 321 return VPX_CODEC_INVALID_PARAM; 322 } 323 strncpy(si->options, options, sizeof(si->options)); 324 si->options[sizeof(si->options) - 1] = '\0'; 325 return VPX_CODEC_OK; 326 } 327 328 void assign_layer_bitrates(const SvcContext *svc_ctx, 329 vpx_codec_enc_cfg_t *const enc_cfg) { 330 int i; 331 const SvcInternal *const si = get_const_svc_internal(svc_ctx); 332 333 if (si->bitrates[0] != 0) { 334 enc_cfg->rc_target_bitrate = 0; 335 for (i = 0; i < svc_ctx->spatial_layers; ++i) { 336 enc_cfg->ss_target_bitrate[i] = (unsigned int)si->bitrates[i]; 337 enc_cfg->rc_target_bitrate += si->bitrates[i]; 338 } 339 } else { 340 float total = 0; 341 float alloc_ratio[VPX_SS_MAX_LAYERS] = {0}; 342 343 for (i = 0; i < svc_ctx->spatial_layers; ++i) { 344 if (si->svc_params.scaling_factor_den[i] > 0) { 345 alloc_ratio[i] = (float)(si->svc_params.scaling_factor_num[i] * 1.0 / 346 si->svc_params.scaling_factor_den[i]); 347 348 alloc_ratio[i] *= alloc_ratio[i]; 349 total += alloc_ratio[i]; 350 } 351 } 352 353 for (i = 0; i < svc_ctx->spatial_layers; ++i) { 354 if (total > 0) { 355 enc_cfg->ss_target_bitrate[i] = (unsigned int) 356 (enc_cfg->rc_target_bitrate * alloc_ratio[i] / total); 357 } 358 } 359 } 360 } 361 362 vpx_codec_err_t vpx_svc_init(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx, 363 vpx_codec_iface_t *iface, 364 vpx_codec_enc_cfg_t *enc_cfg) { 365 vpx_codec_err_t res; 366 int i; 367 SvcInternal *const si = get_svc_internal(svc_ctx); 368 if (svc_ctx == NULL || codec_ctx == NULL || iface == NULL || 369 enc_cfg == NULL) { 370 return VPX_CODEC_INVALID_PARAM; 371 } 372 if (si == NULL) return VPX_CODEC_MEM_ERROR; 373 374 si->codec_ctx = codec_ctx; 375 376 si->width = enc_cfg->g_w; 377 si->height = enc_cfg->g_h; 378 379 if (enc_cfg->kf_max_dist < 2) { 380 svc_log(svc_ctx, SVC_LOG_ERROR, "key frame distance too small: %d\n", 381 enc_cfg->kf_max_dist); 382 return VPX_CODEC_INVALID_PARAM; 383 } 384 si->kf_dist = enc_cfg->kf_max_dist; 385 386 if (svc_ctx->spatial_layers == 0) 387 svc_ctx->spatial_layers = VPX_SS_DEFAULT_LAYERS; 388 if (svc_ctx->spatial_layers < 1 || 389 svc_ctx->spatial_layers > VPX_SS_MAX_LAYERS) { 390 svc_log(svc_ctx, SVC_LOG_ERROR, "spatial layers: invalid value: %d\n", 391 svc_ctx->spatial_layers); 392 return VPX_CODEC_INVALID_PARAM; 393 } 394 395 for (i = 0; i < VPX_SS_MAX_LAYERS; ++i) { 396 si->svc_params.max_quantizers[i] = MAX_QUANTIZER; 397 si->svc_params.min_quantizers[i] = 0; 398 si->svc_params.scaling_factor_num[i] = DEFAULT_SCALE_FACTORS_NUM[i]; 399 si->svc_params.scaling_factor_den[i] = DEFAULT_SCALE_FACTORS_DEN[i]; 400 } 401 402 // Parse aggregate command line options. Options must start with 403 // "layers=xx" then followed by other options 404 res = parse_options(svc_ctx, si->options); 405 if (res != VPX_CODEC_OK) return res; 406 407 if (svc_ctx->spatial_layers < 1) 408 svc_ctx->spatial_layers = 1; 409 if (svc_ctx->spatial_layers > VPX_SS_MAX_LAYERS) 410 svc_ctx->spatial_layers = VPX_SS_MAX_LAYERS; 411 412 if (svc_ctx->temporal_layers < 1) 413 svc_ctx->temporal_layers = 1; 414 if (svc_ctx->temporal_layers > VPX_TS_MAX_LAYERS) 415 svc_ctx->temporal_layers = VPX_TS_MAX_LAYERS; 416 417 assign_layer_bitrates(svc_ctx, enc_cfg); 418 419 #if CONFIG_SPATIAL_SVC 420 for (i = 0; i < svc_ctx->spatial_layers; ++i) 421 enc_cfg->ss_enable_auto_alt_ref[i] = si->enable_auto_alt_ref[i]; 422 #endif 423 424 if (svc_ctx->temporal_layers > 1) { 425 int i; 426 for (i = 0; i < svc_ctx->temporal_layers; ++i) { 427 enc_cfg->ts_target_bitrate[i] = enc_cfg->rc_target_bitrate / 428 svc_ctx->temporal_layers; 429 enc_cfg->ts_rate_decimator[i] = 1 << (svc_ctx->temporal_layers - 1 - i); 430 } 431 } 432 433 // modify encoder configuration 434 enc_cfg->ss_number_layers = svc_ctx->spatial_layers; 435 enc_cfg->ts_number_layers = svc_ctx->temporal_layers; 436 437 if (enc_cfg->g_error_resilient == 0 && si->use_multiple_frame_contexts == 0) 438 enc_cfg->g_error_resilient = 1; 439 440 // Initialize codec 441 res = vpx_codec_enc_init(codec_ctx, iface, enc_cfg, VPX_CODEC_USE_PSNR); 442 if (res != VPX_CODEC_OK) { 443 svc_log(svc_ctx, SVC_LOG_ERROR, "svc_enc_init error\n"); 444 return res; 445 } 446 447 vpx_codec_control(codec_ctx, VP9E_SET_SVC, 1); 448 vpx_codec_control(codec_ctx, VP9E_SET_SVC_PARAMETERS, &si->svc_params); 449 450 return VPX_CODEC_OK; 451 } 452 453 /** 454 * Encode a frame into multiple layers 455 * Create a superframe containing the individual layers 456 */ 457 vpx_codec_err_t vpx_svc_encode(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx, 458 struct vpx_image *rawimg, vpx_codec_pts_t pts, 459 int64_t duration, int deadline) { 460 vpx_codec_err_t res; 461 vpx_codec_iter_t iter; 462 const vpx_codec_cx_pkt_t *cx_pkt; 463 SvcInternal *const si = get_svc_internal(svc_ctx); 464 if (svc_ctx == NULL || codec_ctx == NULL || si == NULL) { 465 return VPX_CODEC_INVALID_PARAM; 466 } 467 468 svc_log_reset(svc_ctx); 469 470 res = vpx_codec_encode(codec_ctx, rawimg, pts, (uint32_t)duration, 0, 471 deadline); 472 if (res != VPX_CODEC_OK) { 473 return res; 474 } 475 // save compressed data 476 iter = NULL; 477 while ((cx_pkt = vpx_codec_get_cx_data(codec_ctx, &iter))) { 478 switch (cx_pkt->kind) { 479 #if CONFIG_SPATIAL_SVC 480 case VPX_CODEC_SPATIAL_SVC_LAYER_PSNR: { 481 int i; 482 for (i = 0; i < svc_ctx->spatial_layers; ++i) { 483 int j; 484 svc_log(svc_ctx, SVC_LOG_DEBUG, 485 "SVC frame: %d, layer: %d, PSNR(Total/Y/U/V): " 486 "%2.3f %2.3f %2.3f %2.3f \n", 487 si->psnr_pkt_received, i, 488 cx_pkt->data.layer_psnr[i].psnr[0], 489 cx_pkt->data.layer_psnr[i].psnr[1], 490 cx_pkt->data.layer_psnr[i].psnr[2], 491 cx_pkt->data.layer_psnr[i].psnr[3]); 492 svc_log(svc_ctx, SVC_LOG_DEBUG, 493 "SVC frame: %d, layer: %d, SSE(Total/Y/U/V): " 494 "%2.3f %2.3f %2.3f %2.3f \n", 495 si->psnr_pkt_received, i, 496 cx_pkt->data.layer_psnr[i].sse[0], 497 cx_pkt->data.layer_psnr[i].sse[1], 498 cx_pkt->data.layer_psnr[i].sse[2], 499 cx_pkt->data.layer_psnr[i].sse[3]); 500 501 for (j = 0; j < COMPONENTS; ++j) { 502 si->psnr_sum[i][j] += 503 cx_pkt->data.layer_psnr[i].psnr[j]; 504 si->sse_sum[i][j] += cx_pkt->data.layer_psnr[i].sse[j]; 505 } 506 } 507 ++si->psnr_pkt_received; 508 break; 509 } 510 case VPX_CODEC_SPATIAL_SVC_LAYER_SIZES: { 511 int i; 512 for (i = 0; i < svc_ctx->spatial_layers; ++i) 513 si->bytes_sum[i] += cx_pkt->data.layer_sizes[i]; 514 break; 515 } 516 #endif 517 default: { 518 break; 519 } 520 } 521 } 522 523 return VPX_CODEC_OK; 524 } 525 526 const char *vpx_svc_get_message(const SvcContext *svc_ctx) { 527 const SvcInternal *const si = get_const_svc_internal(svc_ctx); 528 if (svc_ctx == NULL || si == NULL) return NULL; 529 return si->message_buffer; 530 } 531 532 static double calc_psnr(double d) { 533 if (d == 0) return 100; 534 return -10.0 * log(d) / log(10.0); 535 } 536 537 // dump accumulated statistics and reset accumulated values 538 const char *vpx_svc_dump_statistics(SvcContext *svc_ctx) { 539 int number_of_frames; 540 int i, j; 541 uint32_t bytes_total = 0; 542 double scale[COMPONENTS]; 543 double psnr[COMPONENTS]; 544 double mse[COMPONENTS]; 545 double y_scale; 546 547 SvcInternal *const si = get_svc_internal(svc_ctx); 548 if (svc_ctx == NULL || si == NULL) return NULL; 549 550 svc_log_reset(svc_ctx); 551 552 number_of_frames = si->psnr_pkt_received; 553 if (number_of_frames <= 0) return vpx_svc_get_message(svc_ctx); 554 555 svc_log(svc_ctx, SVC_LOG_INFO, "\n"); 556 for (i = 0; i < svc_ctx->spatial_layers; ++i) { 557 558 svc_log(svc_ctx, SVC_LOG_INFO, 559 "Layer %d Average PSNR=[%2.3f, %2.3f, %2.3f, %2.3f], Bytes=[%u]\n", 560 i, (double)si->psnr_sum[i][0] / number_of_frames, 561 (double)si->psnr_sum[i][1] / number_of_frames, 562 (double)si->psnr_sum[i][2] / number_of_frames, 563 (double)si->psnr_sum[i][3] / number_of_frames, si->bytes_sum[i]); 564 // the following psnr calculation is deduced from ffmpeg.c#print_report 565 y_scale = si->width * si->height * 255.0 * 255.0 * number_of_frames; 566 scale[1] = y_scale; 567 scale[2] = scale[3] = y_scale / 4; // U or V 568 scale[0] = y_scale * 1.5; // total 569 570 for (j = 0; j < COMPONENTS; j++) { 571 psnr[j] = calc_psnr(si->sse_sum[i][j] / scale[j]); 572 mse[j] = si->sse_sum[i][j] * 255.0 * 255.0 / scale[j]; 573 } 574 svc_log(svc_ctx, SVC_LOG_INFO, 575 "Layer %d Overall PSNR=[%2.3f, %2.3f, %2.3f, %2.3f]\n", i, psnr[0], 576 psnr[1], psnr[2], psnr[3]); 577 svc_log(svc_ctx, SVC_LOG_INFO, 578 "Layer %d Overall MSE=[%2.3f, %2.3f, %2.3f, %2.3f]\n", i, mse[0], 579 mse[1], mse[2], mse[3]); 580 581 bytes_total += si->bytes_sum[i]; 582 // clear sums for next time 583 si->bytes_sum[i] = 0; 584 for (j = 0; j < COMPONENTS; ++j) { 585 si->psnr_sum[i][j] = 0; 586 si->sse_sum[i][j] = 0; 587 } 588 } 589 590 // only display statistics once 591 si->psnr_pkt_received = 0; 592 593 svc_log(svc_ctx, SVC_LOG_INFO, "Total Bytes=[%u]\n", bytes_total); 594 return vpx_svc_get_message(svc_ctx); 595 } 596 597 void vpx_svc_release(SvcContext *svc_ctx) { 598 SvcInternal *si; 599 if (svc_ctx == NULL) return; 600 // do not use get_svc_internal as it will unnecessarily allocate an 601 // SvcInternal if it was not already allocated 602 si = (SvcInternal *)svc_ctx->internal; 603 if (si != NULL) { 604 free(si); 605 svc_ctx->internal = NULL; 606 } 607 } 608 609
