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| 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 // This is an example demonstrating how to implement a multi-layer VP9 |
| 12 // encoding scheme based on temporal scalability for video applications |
| 13 // that benefit from a scalable bitstream. |
| 14 |
| 15 #include <math.h> |
| 16 #include <stdio.h> |
| 17 #include <stdlib.h> |
| 18 #include <string.h> |
| 19 |
| 20 #define VPX_CODEC_DISABLE_COMPAT 1 |
| 21 #include "vpx/vp8cx.h" |
| 22 #include "vpx/vpx_encoder.h" |
| 23 |
| 24 #include "./tools_common.h" |
| 25 #include "./video_writer.h" |
| 26 |
| 27 static const char *exec_name; |
| 28 |
| 29 void usage_exit() { |
| 30 exit(EXIT_FAILURE); |
| 31 } |
| 32 |
| 33 static int mode_to_num_layers[12] = {1, 2, 2, 3, 3, 3, 3, 5, 2, 3, 3, 3}; |
| 34 |
| 35 // For rate control encoding stats. |
| 36 struct RateControlMetrics { |
| 37 // Number of input frames per layer. |
| 38 int layer_input_frames[VPX_TS_MAX_LAYERS]; |
| 39 // Total (cumulative) number of encoded frames per layer. |
| 40 int layer_tot_enc_frames[VPX_TS_MAX_LAYERS]; |
| 41 // Number of encoded non-key frames per layer. |
| 42 int layer_enc_frames[VPX_TS_MAX_LAYERS]; |
| 43 // Framerate per layer layer (cumulative). |
| 44 float layer_framerate[VPX_TS_MAX_LAYERS]; |
| 45 // Target average frame size per layer (per-frame-bandwidth per layer). |
| 46 float layer_pfb[VPX_TS_MAX_LAYERS]; |
| 47 // Actual average frame size per layer. |
| 48 float layer_avg_frame_size[VPX_TS_MAX_LAYERS]; |
| 49 // Average rate mismatch per layer (|target - actual| / target). |
| 50 float layer_avg_rate_mismatch[VPX_TS_MAX_LAYERS]; |
| 51 // Actual encoding bitrate per layer (cumulative). |
| 52 float layer_encoding_bitrate[VPX_TS_MAX_LAYERS]; |
| 53 }; |
| 54 |
| 55 static void set_rate_control_metrics(struct RateControlMetrics *rc, |
| 56 vpx_codec_enc_cfg_t *cfg) { |
| 57 int i = 0; |
| 58 // Set the layer (cumulative) framerate and the target layer (non-cumulative) |
| 59 // per-frame-bandwidth, for the rate control encoding stats below. |
| 60 float framerate = cfg->g_timebase.den / cfg->g_timebase.num; |
| 61 rc->layer_framerate[0] = framerate / cfg->ts_rate_decimator[0]; |
| 62 rc->layer_pfb[0] = 1000.0 * cfg->ts_target_bitrate[0] / |
| 63 rc->layer_framerate[0]; |
| 64 for (i = 0; i < cfg->ts_number_layers; ++i) { |
| 65 if (i > 0) { |
| 66 rc->layer_framerate[i] = framerate / cfg->ts_rate_decimator[i]; |
| 67 rc->layer_pfb[i] = 1000.0 * |
| 68 (cfg->ts_target_bitrate[i] - cfg->ts_target_bitrate[i - 1]) / |
| 69 (rc->layer_framerate[i] - rc->layer_framerate[i - 1]); |
| 70 } |
| 71 rc->layer_input_frames[i] = 0; |
| 72 rc->layer_enc_frames[i] = 0; |
| 73 rc->layer_tot_enc_frames[i] = 0; |
| 74 rc->layer_encoding_bitrate[i] = 0.0; |
| 75 rc->layer_avg_frame_size[i] = 0.0; |
| 76 rc->layer_avg_rate_mismatch[i] = 0.0; |
| 77 } |
| 78 } |
| 79 |
| 80 static void printout_rate_control_summary(struct RateControlMetrics *rc, |
| 81 vpx_codec_enc_cfg_t *cfg, |
| 82 int frame_cnt) { |
| 83 int i = 0; |
| 84 int check_num_frames = 0; |
| 85 printf("Total number of processed frames: %d\n\n", frame_cnt -1); |
| 86 printf("Rate control layer stats for %d layer(s):\n\n", |
| 87 cfg->ts_number_layers); |
| 88 for (i = 0; i < cfg->ts_number_layers; ++i) { |
| 89 const int num_dropped = (i > 0) ? |
| 90 (rc->layer_input_frames[i] - rc->layer_enc_frames[i]) : |
| 91 (rc->layer_input_frames[i] - rc->layer_enc_frames[i] - 1); |
| 92 rc->layer_encoding_bitrate[i] = 0.001 * rc->layer_framerate[i] * |
| 93 rc->layer_encoding_bitrate[i] / rc->layer_tot_enc_frames[i]; |
| 94 rc->layer_avg_frame_size[i] = rc->layer_avg_frame_size[i] / |
| 95 rc->layer_enc_frames[i]; |
| 96 rc->layer_avg_rate_mismatch[i] = 100.0 * rc->layer_avg_rate_mismatch[i] / |
| 97 rc->layer_enc_frames[i]; |
| 98 printf("For layer#: %d \n", i); |
| 99 printf("Bitrate (target vs actual): %d %f \n", cfg->ts_target_bitrate[i], |
| 100 rc->layer_encoding_bitrate[i]); |
| 101 printf("Average frame size (target vs actual): %f %f \n", rc->layer_pfb[i], |
| 102 rc->layer_avg_frame_size[i]); |
| 103 printf("Average rate_mismatch: %f \n", rc->layer_avg_rate_mismatch[i]); |
| 104 printf("Number of input frames, encoded (non-key) frames, " |
| 105 "and perc dropped frames: %d %d %f \n", rc->layer_input_frames[i], |
| 106 rc->layer_enc_frames[i], |
| 107 100.0 * num_dropped / rc->layer_input_frames[i]); |
| 108 check_num_frames += rc->layer_input_frames[i]; |
| 109 printf("\n"); |
| 110 } |
| 111 if ((frame_cnt - 1) != check_num_frames) |
| 112 die("Error: Number of input frames not equal to output! \n"); |
| 113 } |
| 114 |
| 115 // Temporal scaling parameters: |
| 116 // NOTE: The 3 prediction frames cannot be used interchangeably due to |
| 117 // differences in the way they are handled throughout the code. The |
| 118 // frames should be allocated to layers in the order LAST, GF, ARF. |
| 119 // Other combinations work, but may produce slightly inferior results. |
| 120 static void set_temporal_layer_pattern(int layering_mode, |
| 121 vpx_codec_enc_cfg_t *cfg, |
| 122 int *layer_flags, |
| 123 int *flag_periodicity) { |
| 124 switch (layering_mode) { |
| 125 case 0: { |
| 126 // 1-layer. |
| 127 int ids[1] = {0}; |
| 128 cfg->ts_periodicity = 1; |
| 129 *flag_periodicity = 1; |
| 130 cfg->ts_number_layers = 1; |
| 131 cfg->ts_rate_decimator[0] = 1; |
| 132 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 133 // Update L only. |
| 134 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF | |
| 135 VP8_EFLAG_NO_UPD_ARF; |
| 136 break; |
| 137 } |
| 138 case 1: { |
| 139 // 2-layers, 2-frame period. |
| 140 int ids[2] = {0, 1}; |
| 141 cfg->ts_periodicity = 2; |
| 142 *flag_periodicity = 2; |
| 143 cfg->ts_number_layers = 2; |
| 144 cfg->ts_rate_decimator[0] = 2; |
| 145 cfg->ts_rate_decimator[1] = 1; |
| 146 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 147 #if 1 |
| 148 // 0=L, 1=GF, Intra-layer prediction enabled. |
| 149 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF | |
| 150 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF; |
| 151 layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST | |
| 152 VP8_EFLAG_NO_REF_ARF; |
| 153 #else |
| 154 // 0=L, 1=GF, Intra-layer prediction disabled. |
| 155 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF | |
| 156 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF; |
| 157 layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST | |
| 158 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_REF_LAST; |
| 159 #endif |
| 160 break; |
| 161 } |
| 162 case 2: { |
| 163 // 2-layers, 3-frame period. |
| 164 int ids[3] = {0, 1, 1}; |
| 165 cfg->ts_periodicity = 3; |
| 166 *flag_periodicity = 3; |
| 167 cfg->ts_number_layers = 2; |
| 168 cfg->ts_rate_decimator[0] = 3; |
| 169 cfg->ts_rate_decimator[1] = 1; |
| 170 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 171 // 0=L, 1=GF, Intra-layer prediction enabled. |
| 172 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | |
| 173 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; |
| 174 layer_flags[1] = |
| 175 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | |
| 176 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST; |
| 177 break; |
| 178 } |
| 179 case 3: { |
| 180 // 3-layers, 6-frame period. |
| 181 int ids[6] = {0, 2, 2, 1, 2, 2}; |
| 182 cfg->ts_periodicity = 6; |
| 183 *flag_periodicity = 6; |
| 184 cfg->ts_number_layers = 3; |
| 185 cfg->ts_rate_decimator[0] = 6; |
| 186 cfg->ts_rate_decimator[1] = 3; |
| 187 cfg->ts_rate_decimator[2] = 1; |
| 188 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 189 // 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled. |
| 190 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | |
| 191 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; |
| 192 layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF | |
| 193 VP8_EFLAG_NO_UPD_LAST; |
| 194 layer_flags[1] = |
| 195 layer_flags[2] = |
| 196 layer_flags[4] = |
| 197 layer_flags[5] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_LAST; |
| 198 break; |
| 199 } |
| 200 case 4: { |
| 201 // 3-layers, 4-frame period. |
| 202 int ids[4] = {0, 2, 1, 2}; |
| 203 cfg->ts_periodicity = 4; |
| 204 *flag_periodicity = 4; |
| 205 cfg->ts_number_layers = 3; |
| 206 cfg->ts_rate_decimator[0] = 4; |
| 207 cfg->ts_rate_decimator[1] = 2; |
| 208 cfg->ts_rate_decimator[2] = 1; |
| 209 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 210 // 0=L, 1=GF, 2=ARF, Intra-layer prediction disabled. |
| 211 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | |
| 212 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; |
| 213 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | |
| 214 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST; |
| 215 layer_flags[1] = |
| 216 layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | |
| 217 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; |
| 218 break; |
| 219 } |
| 220 case 5: { |
| 221 // 3-layers, 4-frame period. |
| 222 int ids[4] = {0, 2, 1, 2}; |
| 223 cfg->ts_periodicity = 4; |
| 224 *flag_periodicity = 4; |
| 225 cfg->ts_number_layers = 3; |
| 226 cfg->ts_rate_decimator[0] = 4; |
| 227 cfg->ts_rate_decimator[1] = 2; |
| 228 cfg->ts_rate_decimator[2] = 1; |
| 229 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 230 // 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled in layer 1, disabled |
| 231 // in layer 2. |
| 232 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | |
| 233 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; |
| 234 layer_flags[2] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | |
| 235 VP8_EFLAG_NO_UPD_ARF; |
| 236 layer_flags[1] = |
| 237 layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | |
| 238 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; |
| 239 break; |
| 240 } |
| 241 case 6: { |
| 242 // 3-layers, 4-frame period. |
| 243 int ids[4] = {0, 2, 1, 2}; |
| 244 cfg->ts_periodicity = 4; |
| 245 *flag_periodicity = 4; |
| 246 cfg->ts_number_layers = 3; |
| 247 cfg->ts_rate_decimator[0] = 4; |
| 248 cfg->ts_rate_decimator[1] = 2; |
| 249 cfg->ts_rate_decimator[2] = 1; |
| 250 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 251 // 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled. |
| 252 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | |
| 253 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; |
| 254 layer_flags[2] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | |
| 255 VP8_EFLAG_NO_UPD_ARF; |
| 256 layer_flags[1] = |
| 257 layer_flags[3] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF; |
| 258 break; |
| 259 } |
| 260 case 7: { |
| 261 // NOTE: Probably of academic interest only. |
| 262 // 5-layers, 16-frame period. |
| 263 int ids[16] = {0, 4, 3, 4, 2, 4, 3, 4, 1, 4, 3, 4, 2, 4, 3, 4}; |
| 264 cfg->ts_periodicity = 16; |
| 265 *flag_periodicity = 16; |
| 266 cfg->ts_number_layers = 5; |
| 267 cfg->ts_rate_decimator[0] = 16; |
| 268 cfg->ts_rate_decimator[1] = 8; |
| 269 cfg->ts_rate_decimator[2] = 4; |
| 270 cfg->ts_rate_decimator[3] = 2; |
| 271 cfg->ts_rate_decimator[4] = 1; |
| 272 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 273 layer_flags[0] = VPX_EFLAG_FORCE_KF; |
| 274 layer_flags[1] = |
| 275 layer_flags[3] = |
| 276 layer_flags[5] = |
| 277 layer_flags[7] = |
| 278 layer_flags[9] = |
| 279 layer_flags[11] = |
| 280 layer_flags[13] = |
| 281 layer_flags[15] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF | |
| 282 VP8_EFLAG_NO_UPD_ARF; |
| 283 layer_flags[2] = |
| 284 layer_flags[6] = |
| 285 layer_flags[10] = |
| 286 layer_flags[14] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_GF; |
| 287 layer_flags[4] = |
| 288 layer_flags[12] = VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_UPD_ARF; |
| 289 layer_flags[8] = VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_REF_GF; |
| 290 break; |
| 291 } |
| 292 case 8: { |
| 293 // 2-layers, with sync point at first frame of layer 1. |
| 294 int ids[2] = {0, 1}; |
| 295 cfg->ts_periodicity = 2; |
| 296 *flag_periodicity = 8; |
| 297 cfg->ts_number_layers = 2; |
| 298 cfg->ts_rate_decimator[0] = 2; |
| 299 cfg->ts_rate_decimator[1] = 1; |
| 300 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 301 // 0=L, 1=GF. |
| 302 // ARF is used as predictor for all frames, and is only updated on |
| 303 // key frame. Sync point every 8 frames. |
| 304 |
| 305 // Layer 0: predict from L and ARF, update L and G. |
| 306 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | |
| 307 VP8_EFLAG_NO_UPD_ARF; |
| 308 // Layer 1: sync point: predict from L and ARF, and update G. |
| 309 layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_LAST | |
| 310 VP8_EFLAG_NO_UPD_ARF; |
| 311 // Layer 0, predict from L and ARF, update L. |
| 312 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF | |
| 313 VP8_EFLAG_NO_UPD_ARF; |
| 314 // Layer 1: predict from L, G and ARF, and update G. |
| 315 layer_flags[3] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST | |
| 316 VP8_EFLAG_NO_UPD_ENTROPY; |
| 317 // Layer 0. |
| 318 layer_flags[4] = layer_flags[2]; |
| 319 // Layer 1. |
| 320 layer_flags[5] = layer_flags[3]; |
| 321 // Layer 0. |
| 322 layer_flags[6] = layer_flags[4]; |
| 323 // Layer 1. |
| 324 layer_flags[7] = layer_flags[5]; |
| 325 break; |
| 326 } |
| 327 case 9: { |
| 328 // 3-layers: Sync points for layer 1 and 2 every 8 frames. |
| 329 int ids[4] = {0, 2, 1, 2}; |
| 330 cfg->ts_periodicity = 4; |
| 331 *flag_periodicity = 8; |
| 332 cfg->ts_number_layers = 3; |
| 333 cfg->ts_rate_decimator[0] = 4; |
| 334 cfg->ts_rate_decimator[1] = 2; |
| 335 cfg->ts_rate_decimator[2] = 1; |
| 336 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 337 // 0=L, 1=GF, 2=ARF. |
| 338 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | |
| 339 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; |
| 340 layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | |
| 341 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF; |
| 342 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | |
| 343 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF; |
| 344 layer_flags[3] = |
| 345 layer_flags[5] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF; |
| 346 layer_flags[4] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | |
| 347 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; |
| 348 layer_flags[6] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | |
| 349 VP8_EFLAG_NO_UPD_ARF; |
| 350 layer_flags[7] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF | |
| 351 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_ENTROPY; |
| 352 break; |
| 353 } |
| 354 case 10: { |
| 355 // 3-layers structure where ARF is used as predictor for all frames, |
| 356 // and is only updated on key frame. |
| 357 // Sync points for layer 1 and 2 every 8 frames. |
| 358 |
| 359 int ids[4] = {0, 2, 1, 2}; |
| 360 cfg->ts_periodicity = 4; |
| 361 *flag_periodicity = 8; |
| 362 cfg->ts_number_layers = 3; |
| 363 cfg->ts_rate_decimator[0] = 4; |
| 364 cfg->ts_rate_decimator[1] = 2; |
| 365 cfg->ts_rate_decimator[2] = 1; |
| 366 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 367 // 0=L, 1=GF, 2=ARF. |
| 368 // Layer 0: predict from L and ARF; update L and G. |
| 369 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_ARF | |
| 370 VP8_EFLAG_NO_REF_GF; |
| 371 // Layer 2: sync point: predict from L and ARF; update none. |
| 372 layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF | |
| 373 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST | |
| 374 VP8_EFLAG_NO_UPD_ENTROPY; |
| 375 // Layer 1: sync point: predict from L and ARF; update G. |
| 376 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_ARF | |
| 377 VP8_EFLAG_NO_UPD_LAST; |
| 378 // Layer 2: predict from L, G, ARF; update none. |
| 379 layer_flags[3] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | |
| 380 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ENTROPY; |
| 381 // Layer 0: predict from L and ARF; update L. |
| 382 layer_flags[4] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | |
| 383 VP8_EFLAG_NO_REF_GF; |
| 384 // Layer 2: predict from L, G, ARF; update none. |
| 385 layer_flags[5] = layer_flags[3]; |
| 386 // Layer 1: predict from L, G, ARF; update G. |
| 387 layer_flags[6] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST; |
| 388 // Layer 2: predict from L, G, ARF; update none. |
| 389 layer_flags[7] = layer_flags[3]; |
| 390 break; |
| 391 } |
| 392 case 11: |
| 393 default: { |
| 394 // 3-layers structure as in case 10, but no sync/refresh points for |
| 395 // layer 1 and 2. |
| 396 int ids[4] = {0, 2, 1, 2}; |
| 397 cfg->ts_periodicity = 4; |
| 398 *flag_periodicity = 8; |
| 399 cfg->ts_number_layers = 3; |
| 400 cfg->ts_rate_decimator[0] = 4; |
| 401 cfg->ts_rate_decimator[1] = 2; |
| 402 cfg->ts_rate_decimator[2] = 1; |
| 403 memcpy(cfg->ts_layer_id, ids, sizeof(ids)); |
| 404 // 0=L, 1=GF, 2=ARF. |
| 405 // Layer 0: predict from L and ARF; update L. |
| 406 layer_flags[0] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | |
| 407 VP8_EFLAG_NO_REF_GF; |
| 408 layer_flags[4] = layer_flags[0]; |
| 409 // Layer 1: predict from L, G, ARF; update G. |
| 410 layer_flags[2] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST; |
| 411 layer_flags[6] = layer_flags[2]; |
| 412 // Layer 2: predict from L, G, ARF; update none. |
| 413 layer_flags[1] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | |
| 414 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ENTROPY; |
| 415 layer_flags[3] = layer_flags[1]; |
| 416 layer_flags[5] = layer_flags[1]; |
| 417 layer_flags[7] = layer_flags[1]; |
| 418 break; |
| 419 } |
| 420 } |
| 421 } |
| 422 |
| 423 int main(int argc, char **argv) { |
| 424 VpxVideoWriter *outfile[VPX_TS_MAX_LAYERS]; |
| 425 vpx_codec_ctx_t codec; |
| 426 vpx_codec_enc_cfg_t cfg; |
| 427 int frame_cnt = 0; |
| 428 vpx_image_t raw; |
| 429 vpx_codec_err_t res; |
| 430 unsigned int width; |
| 431 unsigned int height; |
| 432 int frame_avail; |
| 433 int got_data; |
| 434 int flags = 0; |
| 435 int i; |
| 436 int pts = 0; // PTS starts at 0. |
| 437 int frame_duration = 1; // 1 timebase tick per frame. |
| 438 int layering_mode = 0; |
| 439 int layer_flags[VPX_TS_MAX_PERIODICITY] = {0}; |
| 440 int flag_periodicity = 1; |
| 441 int max_intra_size_pct; |
| 442 vpx_svc_layer_id_t layer_id = {0, 0}; |
| 443 const VpxInterface *encoder = NULL; |
| 444 FILE *infile = NULL; |
| 445 struct RateControlMetrics rc; |
| 446 |
| 447 exec_name = argv[0]; |
| 448 // Check usage and arguments. |
| 449 if (argc < 11) { |
| 450 die("Usage: %s <infile> <outfile> <codec_type(vp8/vp9)> <width> <height> " |
| 451 "<rate_num> <rate_den> <frame_drop_threshold> <mode> " |
| 452 "<Rate_0> ... <Rate_nlayers-1> \n", argv[0]); |
| 453 } |
| 454 |
| 455 encoder = get_vpx_encoder_by_name(argv[3]); |
| 456 if (!encoder) |
| 457 die("Unsupported codec."); |
| 458 |
| 459 printf("Using %s\n", vpx_codec_iface_name(encoder->interface())); |
| 460 |
| 461 width = strtol(argv[4], NULL, 0); |
| 462 height = strtol(argv[5], NULL, 0); |
| 463 if (width < 16 || width % 2 || height < 16 || height % 2) { |
| 464 die("Invalid resolution: %d x %d", width, height); |
| 465 } |
| 466 |
| 467 layering_mode = strtol(argv[9], NULL, 0); |
| 468 if (layering_mode < 0 || layering_mode > 12) { |
| 469 die("Invalid mode (0..12) %s", argv[9]); |
| 470 } |
| 471 |
| 472 if (argc != 10 + mode_to_num_layers[layering_mode]) { |
| 473 die("Invalid number of arguments"); |
| 474 } |
| 475 |
| 476 if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, width, height, 32)) { |
| 477 die("Failed to allocate image", width, height); |
| 478 } |
| 479 |
| 480 // Populate encoder configuration. |
| 481 res = vpx_codec_enc_config_default(encoder->interface(), &cfg, 0); |
| 482 if (res) { |
| 483 printf("Failed to get config: %s\n", vpx_codec_err_to_string(res)); |
| 484 return EXIT_FAILURE; |
| 485 } |
| 486 |
| 487 // Update the default configuration with our settings. |
| 488 cfg.g_w = width; |
| 489 cfg.g_h = height; |
| 490 |
| 491 // Timebase format e.g. 30fps: numerator=1, demoninator = 30. |
| 492 cfg.g_timebase.num = strtol(argv[6], NULL, 0); |
| 493 cfg.g_timebase.den = strtol(argv[7], NULL, 0); |
| 494 |
| 495 for (i = 10; i < 10 + mode_to_num_layers[layering_mode]; ++i) { |
| 496 cfg.ts_target_bitrate[i - 10] = strtol(argv[i], NULL, 0); |
| 497 } |
| 498 |
| 499 // Real time parameters. |
| 500 cfg.rc_dropframe_thresh = strtol(argv[8], NULL, 0); |
| 501 cfg.rc_end_usage = VPX_CBR; |
| 502 cfg.rc_resize_allowed = 0; |
| 503 cfg.rc_min_quantizer = 2; |
| 504 cfg.rc_max_quantizer = 56; |
| 505 cfg.rc_undershoot_pct = 50; |
| 506 cfg.rc_overshoot_pct = 50; |
| 507 cfg.rc_buf_initial_sz = 500; |
| 508 cfg.rc_buf_optimal_sz = 600; |
| 509 cfg.rc_buf_sz = 1000; |
| 510 |
| 511 // Enable error resilient mode. |
| 512 cfg.g_error_resilient = 1; |
| 513 cfg.g_lag_in_frames = 0; |
| 514 cfg.kf_mode = VPX_KF_DISABLED; |
| 515 |
| 516 // Disable automatic keyframe placement. |
| 517 cfg.kf_min_dist = cfg.kf_max_dist = 3000; |
| 518 |
| 519 // Default setting for bitrate: used in special case of 1 layer (case 0). |
| 520 cfg.rc_target_bitrate = cfg.ts_target_bitrate[0]; |
| 521 |
| 522 set_temporal_layer_pattern(layering_mode, |
| 523 &cfg, |
| 524 layer_flags, |
| 525 &flag_periodicity); |
| 526 |
| 527 set_rate_control_metrics(&rc, &cfg); |
| 528 |
| 529 // Open input file. |
| 530 if (!(infile = fopen(argv[1], "rb"))) { |
| 531 die("Failed to open %s for reading", argv[1]); |
| 532 } |
| 533 |
| 534 // Open an output file for each stream. |
| 535 for (i = 0; i < cfg.ts_number_layers; ++i) { |
| 536 char file_name[PATH_MAX]; |
| 537 VpxVideoInfo info; |
| 538 info.codec_fourcc = encoder->fourcc; |
| 539 info.frame_width = cfg.g_w; |
| 540 info.frame_height = cfg.g_h; |
| 541 info.time_base.numerator = cfg.g_timebase.num; |
| 542 info.time_base.denominator = cfg.g_timebase.den; |
| 543 |
| 544 snprintf(file_name, sizeof(file_name), "%s_%d.ivf", argv[2], i); |
| 545 outfile[i] = vpx_video_writer_open(file_name, kContainerIVF, &info); |
| 546 if (!outfile[i]) |
| 547 die("Failed to open %s for writing", file_name); |
| 548 } |
| 549 // No spatial layers in this encoder. |
| 550 cfg.ss_number_layers = 1; |
| 551 |
| 552 // Initialize codec. |
| 553 if (vpx_codec_enc_init(&codec, encoder->interface(), &cfg, 0)) |
| 554 die_codec(&codec, "Failed to initialize encoder"); |
| 555 |
| 556 vpx_codec_control(&codec, VP8E_SET_CPUUSED, -6); |
| 557 vpx_codec_control(&codec, VP8E_SET_NOISE_SENSITIVITY, 1); |
| 558 if (strncmp(encoder->name, "vp9", 3) == 0) { |
| 559 vpx_codec_control(&codec, VP8E_SET_CPUUSED, 3); |
| 560 vpx_codec_control(&codec, VP8E_SET_NOISE_SENSITIVITY, 0); |
| 561 if (vpx_codec_control(&codec, VP9E_SET_SVC, 1)) { |
| 562 die_codec(&codec, "Failed to set SVC"); |
| 563 } |
| 564 } |
| 565 vpx_codec_control(&codec, VP8E_SET_STATIC_THRESHOLD, 1); |
| 566 vpx_codec_control(&codec, VP8E_SET_TOKEN_PARTITIONS, 1); |
| 567 max_intra_size_pct = (int) (((double)cfg.rc_buf_optimal_sz * 0.5) |
| 568 * ((double) cfg.g_timebase.den / cfg.g_timebase.num) / 10.0); |
| 569 vpx_codec_control(&codec, VP8E_SET_MAX_INTRA_BITRATE_PCT, max_intra_size_pct); |
| 570 |
| 571 frame_avail = 1; |
| 572 while (frame_avail || got_data) { |
| 573 vpx_codec_iter_t iter = NULL; |
| 574 const vpx_codec_cx_pkt_t *pkt; |
| 575 // Update the temporal layer_id. No spatial layers in this test. |
| 576 layer_id.spatial_layer_id = 0; |
| 577 layer_id.temporal_layer_id = |
| 578 cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity]; |
| 579 if (strncmp(encoder->name, "vp9", 3) == 0) { |
| 580 vpx_codec_control(&codec, VP9E_SET_SVC_LAYER_ID, &layer_id); |
| 581 } |
| 582 flags = layer_flags[frame_cnt % flag_periodicity]; |
| 583 frame_avail = vpx_img_read(&raw, infile); |
| 584 if (frame_avail) |
| 585 ++rc.layer_input_frames[layer_id.temporal_layer_id]; |
| 586 if (vpx_codec_encode(&codec, frame_avail? &raw : NULL, pts, 1, flags, |
| 587 VPX_DL_REALTIME)) { |
| 588 die_codec(&codec, "Failed to encode frame"); |
| 589 } |
| 590 // Reset KF flag. |
| 591 if (layering_mode != 7) { |
| 592 layer_flags[0] &= ~VPX_EFLAG_FORCE_KF; |
| 593 } |
| 594 got_data = 0; |
| 595 while ( (pkt = vpx_codec_get_cx_data(&codec, &iter)) ) { |
| 596 got_data = 1; |
| 597 switch (pkt->kind) { |
| 598 case VPX_CODEC_CX_FRAME_PKT: |
| 599 for (i = cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity]; |
| 600 i < cfg.ts_number_layers; ++i) { |
| 601 vpx_video_writer_write_frame(outfile[i], pkt->data.frame.buf, |
| 602 pkt->data.frame.sz, pts); |
| 603 ++rc.layer_tot_enc_frames[i]; |
| 604 rc.layer_encoding_bitrate[i] += 8.0 * pkt->data.frame.sz; |
| 605 // Keep count of rate control stats per layer (for non-key frames). |
| 606 if (i == cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity] && |
| 607 !(pkt->data.frame.flags & VPX_FRAME_IS_KEY)) { |
| 608 rc.layer_avg_frame_size[i] += 8.0 * pkt->data.frame.sz; |
| 609 rc.layer_avg_rate_mismatch[i] += |
| 610 fabs(8.0 * pkt->data.frame.sz - rc.layer_pfb[i]) / |
| 611 rc.layer_pfb[i]; |
| 612 ++rc.layer_enc_frames[i]; |
| 613 } |
| 614 } |
| 615 break; |
| 616 default: |
| 617 break; |
| 618 } |
| 619 } |
| 620 ++frame_cnt; |
| 621 pts += frame_duration; |
| 622 } |
| 623 fclose(infile); |
| 624 printout_rate_control_summary(&rc, &cfg, frame_cnt); |
| 625 |
| 626 if (vpx_codec_destroy(&codec)) |
| 627 die_codec(&codec, "Failed to destroy codec"); |
| 628 |
| 629 // Try to rewrite the output file headers with the actual frame count. |
| 630 for (i = 0; i < cfg.ts_number_layers; ++i) |
| 631 vpx_video_writer_close(outfile[i]); |
| 632 |
| 633 return EXIT_SUCCESS; |
| 634 } |
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