WebM Codec SDK

vp9_spatial_svc_encoder
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 #include "../args.h"
24 #include "../tools_common.h"
25 #include "../video_writer.h"
26
27 #include "../vpx_ports/vpx_timer.h"
28 #include "./svc_context.h"
29 #include "vpx/vp8cx.h"
30 #include "vpx/vpx_encoder.h"
31 #include "../vpxstats.h"
32 #include "vp9/encoder/vp9_encoder.h"
33 #define OUTPUT_RC_STATS 1
34
35 static const arg_def_t skip_frames_arg =
36 ARG_DEF("s", "skip-frames", 1, "input frames to skip");
37 static const arg_def_t frames_arg =
38 ARG_DEF("f", "frames", 1, "number of frames to encode");
39 static const arg_def_t threads_arg =
40 ARG_DEF("th", "threads", 1, "number of threads to use");
41 #if OUTPUT_RC_STATS
42 static const arg_def_t output_rc_stats_arg =
43 ARG_DEF("rcstat", "output_rc_stats", 1, "output rc stats");
44 #endif
45 static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width");
46 static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height");
47 static const arg_def_t timebase_arg =
48 ARG_DEF("t", "timebase", 1, "timebase (num/den)");
49 static const arg_def_t bitrate_arg = ARG_DEF(
50 "b", "target-bitrate", 1, "encoding bitrate, in kilobits per second");
51 static const arg_def_t spatial_layers_arg =
52 ARG_DEF("sl", "spatial-layers", 1, "number of spatial SVC layers");
53 static const arg_def_t temporal_layers_arg =
54 ARG_DEF("tl", "temporal-layers", 1, "number of temporal SVC layers");
55 static const arg_def_t temporal_layering_mode_arg =
56 ARG_DEF("tlm", "temporal-layering-mode", 1,
57 "temporal layering scheme."
58 "VP9E_TEMPORAL_LAYERING_MODE");
59 static const arg_def_t kf_dist_arg =
60 ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes");
61 static const arg_def_t scale_factors_arg =
62 ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)");
63 static const arg_def_t passes_arg =
64 ARG_DEF("p", "passes", 1, "Number of passes (1/2)");
65 static const arg_def_t pass_arg =
66 ARG_DEF(NULL, "pass", 1, "Pass to execute (1/2)");
67 static const arg_def_t fpf_name_arg =
68 ARG_DEF(NULL, "fpf", 1, "First pass statistics file name");
69 static const arg_def_t min_q_arg =
70 ARG_DEF(NULL, "min-q", 1, "Minimum quantizer");
71 static const arg_def_t max_q_arg =
72 ARG_DEF(NULL, "max-q", 1, "Maximum quantizer");
73 static const arg_def_t min_bitrate_arg =
74 ARG_DEF(NULL, "min-bitrate", 1, "Minimum bitrate");
75 static const arg_def_t max_bitrate_arg =
76 ARG_DEF(NULL, "max-bitrate", 1, "Maximum bitrate");
77 static const arg_def_t lag_in_frame_arg =
78 ARG_DEF(NULL, "lag-in-frames", 1,
79 "Number of frame to input before "
80 "generating any outputs");
81 static const arg_def_t rc_end_usage_arg =
82 ARG_DEF(NULL, "rc-end-usage", 1, "0 - 3: VBR, CBR, CQ, Q");
83 static const arg_def_t speed_arg =
84 ARG_DEF("sp", "speed", 1, "speed configuration");
85 static const arg_def_t aqmode_arg =
86 ARG_DEF("aq", "aqmode", 1, "aq-mode off/on");
87 static const arg_def_t bitrates_arg =
88 ARG_DEF("bl", "bitrates", 1, "bitrates[sl * num_tl + tl]");
89 static const arg_def_t dropframe_thresh_arg =
90 ARG_DEF(NULL, "drop-frame", 1, "Temporal resampling threshold (buf %)");
91 static const struct arg_enum_list tune_content_enum[] = {
92 { "default", VP9E_CONTENT_DEFAULT },
93 { "screen", VP9E_CONTENT_SCREEN },
94 { "film", VP9E_CONTENT_FILM },
95 { NULL, 0 }
96 };
97
98 static const arg_def_t tune_content_arg = ARG_DEF_ENUM(
99 NULL, "tune-content", 1, "Tune content type", tune_content_enum);
100 static const arg_def_t inter_layer_pred_arg = ARG_DEF(
101 NULL, "inter-layer-pred", 1, "0 - 3: On, Off, Key-frames, Constrained");
102
103 #if CONFIG_VP9_HIGHBITDEPTH
104 static const struct arg_enum_list bitdepth_enum[] = {
105 { "8", VPX_BITS_8 }, { "10", VPX_BITS_10 }, { "12", VPX_BITS_12 }, { NULL, 0 }
106 };
107
108 static const arg_def_t bitdepth_arg = ARG_DEF_ENUM(
109 "d", "bit-depth", 1, "Bit depth for codec 8, 10 or 12. ", bitdepth_enum);
110 #endif // CONFIG_VP9_HIGHBITDEPTH
111
112 static const arg_def_t *svc_args[] = { &frames_arg,
113 &width_arg,
114 &height_arg,
115 &timebase_arg,
116 &bitrate_arg,
117 &skip_frames_arg,
118 &spatial_layers_arg,
119 &kf_dist_arg,
120 &scale_factors_arg,
121 &passes_arg,
122 &pass_arg,
123 &fpf_name_arg,
124 &min_q_arg,
125 &max_q_arg,
126 &min_bitrate_arg,
127 &max_bitrate_arg,
128 &temporal_layers_arg,
129 &temporal_layering_mode_arg,
130 &lag_in_frame_arg,
131 &threads_arg,
132 &aqmode_arg,
133 #if OUTPUT_RC_STATS
134 &output_rc_stats_arg,
135 #endif
136
137 #if CONFIG_VP9_HIGHBITDEPTH
138 &bitdepth_arg,
139 #endif
140 &speed_arg,
141 &rc_end_usage_arg,
142 &bitrates_arg,
143 &dropframe_thresh_arg,
144 &tune_content_arg,
145 &inter_layer_pred_arg,
146 NULL };
147
148 static const uint32_t default_frames_to_skip = 0;
149 static const uint32_t default_frames_to_code = 60 * 60;
150 static const uint32_t default_width = 1920;
151 static const uint32_t default_height = 1080;
152 static const uint32_t default_timebase_num = 1;
153 static const uint32_t default_timebase_den = 60;
154 static const uint32_t default_bitrate = 1000;
155 static const uint32_t default_spatial_layers = 5;
156 static const uint32_t default_temporal_layers = 1;
157 static const uint32_t default_kf_dist = 100;
158 static const uint32_t default_temporal_layering_mode = 0;
159 static const uint32_t default_output_rc_stats = 0;
160 static const int32_t default_speed = -1; // -1 means use library default.
161 static const uint32_t default_threads = 0; // zero means use library default.
162
163 typedef struct {
164 const char *input_filename;
165 const char *output_filename;
166 uint32_t frames_to_code;
167 uint32_t frames_to_skip;
168 struct VpxInputContext input_ctx;
169 stats_io_t rc_stats;
170 int passes;
171 int pass;
172 int tune_content;
173 int inter_layer_pred;
174 } AppInput;
175
176 static const char *exec_name;
177
178 void usage_exit(void) {
179 fprintf(stderr, "Usage: %s <options> input_filename output_filename\n",
180 exec_name);
181 fprintf(stderr, "Options:\n");
182 arg_show_usage(stderr, svc_args);
183 exit(EXIT_FAILURE);
184 }
185
186 static void parse_command_line(int argc, const char **argv_,
187 AppInput *app_input, SvcContext *svc_ctx,
188 vpx_codec_enc_cfg_t *enc_cfg) {
189 struct arg arg;
190 char **argv = NULL;
191 char **argi = NULL;
192 char **argj = NULL;
193 vpx_codec_err_t res;
194 int passes = 0;
195 int pass = 0;
196 const char *fpf_file_name = NULL;
197 unsigned int min_bitrate = 0;
198 unsigned int max_bitrate = 0;
199 char string_options[1024] = { 0 };
200
201 // initialize SvcContext with parameters that will be passed to vpx_svc_init
202 svc_ctx->log_level = SVC_LOG_DEBUG;
203 svc_ctx->spatial_layers = default_spatial_layers;
204 svc_ctx->temporal_layers = default_temporal_layers;
205 svc_ctx->temporal_layering_mode = default_temporal_layering_mode;
206 #if OUTPUT_RC_STATS
207 svc_ctx->output_rc_stat = default_output_rc_stats;
208 #endif
209 svc_ctx->speed = default_speed;
210 svc_ctx->threads = default_threads;
211
212 // start with default encoder configuration
213 res = vpx_codec_enc_config_default(vpx_codec_vp9_cx(), enc_cfg, 0);
214 if (res) {
215 die("Failed to get config: %s\n", vpx_codec_err_to_string(res));
216 }
217 // update enc_cfg with app default values
218 enc_cfg->g_w = default_width;
219 enc_cfg->g_h = default_height;
220 enc_cfg->g_timebase.num = default_timebase_num;
221 enc_cfg->g_timebase.den = default_timebase_den;
222 enc_cfg->rc_target_bitrate = default_bitrate;
223 enc_cfg->kf_min_dist = default_kf_dist;
224 enc_cfg->kf_max_dist = default_kf_dist;
225 enc_cfg->rc_end_usage = VPX_CQ;
226
227 // initialize AppInput with default values
228 app_input->frames_to_code = default_frames_to_code;
229 app_input->frames_to_skip = default_frames_to_skip;
230
231 // process command line options
232 argv = argv_dup(argc - 1, argv_ + 1);
233 for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
234 arg.argv_step = 1;
235
236 if (arg_match(&arg, &frames_arg, argi)) {
237 app_input->frames_to_code = arg_parse_uint(&arg);
238 } else if (arg_match(&arg, &width_arg, argi)) {
239 enc_cfg->g_w = arg_parse_uint(&arg);
240 } else if (arg_match(&arg, &height_arg, argi)) {
241 enc_cfg->g_h = arg_parse_uint(&arg);
242 } else if (arg_match(&arg, &timebase_arg, argi)) {
243 enc_cfg->g_timebase = arg_parse_rational(&arg);
244 } else if (arg_match(&arg, &bitrate_arg, argi)) {
245 enc_cfg->rc_target_bitrate = arg_parse_uint(&arg);
246 } else if (arg_match(&arg, &skip_frames_arg, argi)) {
247 app_input->frames_to_skip = arg_parse_uint(&arg);
248 } else if (arg_match(&arg, &spatial_layers_arg, argi)) {
249 svc_ctx->spatial_layers = arg_parse_uint(&arg);
250 } else if (arg_match(&arg, &temporal_layers_arg, argi)) {
251 svc_ctx->temporal_layers = arg_parse_uint(&arg);
252 #if OUTPUT_RC_STATS
253 } else if (arg_match(&arg, &output_rc_stats_arg, argi)) {
254 svc_ctx->output_rc_stat = arg_parse_uint(&arg);
255 #endif
256 } else if (arg_match(&arg, &speed_arg, argi)) {
257 svc_ctx->speed = arg_parse_uint(&arg);
258 } else if (arg_match(&arg, &aqmode_arg, argi)) {
259 svc_ctx->aqmode = arg_parse_uint(&arg);
260 } else if (arg_match(&arg, &threads_arg, argi)) {
261 svc_ctx->threads = arg_parse_uint(&arg);
262 } else if (arg_match(&arg, &temporal_layering_mode_arg, argi)) {
263 svc_ctx->temporal_layering_mode = enc_cfg->temporal_layering_mode =
264 arg_parse_int(&arg);
265 if (svc_ctx->temporal_layering_mode) {
266 enc_cfg->g_error_resilient = 1;
267 }
268 } else if (arg_match(&arg, &kf_dist_arg, argi)) {
269 enc_cfg->kf_min_dist = arg_parse_uint(&arg);
270 enc_cfg->kf_max_dist = enc_cfg->kf_min_dist;
271 } else if (arg_match(&arg, &scale_factors_arg, argi)) {
272 strncat(string_options, " scale-factors=",
273 sizeof(string_options) - strlen(string_options) - 1);
274 strncat(string_options, arg.val,
275 sizeof(string_options) - strlen(string_options) - 1);
276 } else if (arg_match(&arg, &bitrates_arg, argi)) {
277 strncat(string_options, " bitrates=",
278 sizeof(string_options) - strlen(string_options) - 1);
279 strncat(string_options, arg.val,
280 sizeof(string_options) - strlen(string_options) - 1);
281 } else if (arg_match(&arg, &passes_arg, argi)) {
282 passes = arg_parse_uint(&arg);
283 if (passes < 1 || passes > 2) {
284 die("Error: Invalid number of passes (%d)\n", passes);
285 }
286 } else if (arg_match(&arg, &pass_arg, argi)) {
287 pass = arg_parse_uint(&arg);
288 if (pass < 1 || pass > 2) {
289 die("Error: Invalid pass selected (%d)\n", pass);
290 }
291 } else if (arg_match(&arg, &fpf_name_arg, argi)) {
292 fpf_file_name = arg.val;
293 } else if (arg_match(&arg, &min_q_arg, argi)) {
294 strncat(string_options, " min-quantizers=",
295 sizeof(string_options) - strlen(string_options) - 1);
296 strncat(string_options, arg.val,
297 sizeof(string_options) - strlen(string_options) - 1);
298 } else if (arg_match(&arg, &max_q_arg, argi)) {
299 strncat(string_options, " max-quantizers=",
300 sizeof(string_options) - strlen(string_options) - 1);
301 strncat(string_options, arg.val,
302 sizeof(string_options) - strlen(string_options) - 1);
303 } else if (arg_match(&arg, &min_bitrate_arg, argi)) {
304 min_bitrate = arg_parse_uint(&arg);
305 } else if (arg_match(&arg, &max_bitrate_arg, argi)) {
306 max_bitrate = arg_parse_uint(&arg);
307 } else if (arg_match(&arg, &lag_in_frame_arg, argi)) {
308 enc_cfg->g_lag_in_frames = arg_parse_uint(&arg);
309 } else if (arg_match(&arg, &rc_end_usage_arg, argi)) {
310 enc_cfg->rc_end_usage = arg_parse_uint(&arg);
311 #if CONFIG_VP9_HIGHBITDEPTH
312 } else if (arg_match(&arg, &bitdepth_arg, argi)) {
313 enc_cfg->g_bit_depth = arg_parse_enum_or_int(&arg);
314 switch (enc_cfg->g_bit_depth) {
315 case VPX_BITS_8:
316 enc_cfg->g_input_bit_depth = 8;
317 enc_cfg->g_profile = 0;
318 break;
319 case VPX_BITS_10:
320 enc_cfg->g_input_bit_depth = 10;
321 enc_cfg->g_profile = 2;
322 break;
323 case VPX_BITS_12:
324 enc_cfg->g_input_bit_depth = 12;
325 enc_cfg->g_profile = 2;
326 break;
327 default:
328 die("Error: Invalid bit depth selected (%d)\n", enc_cfg->g_bit_depth);
329 break;
330 }
331 #endif // CONFIG_VP9_HIGHBITDEPTH
332 } else if (arg_match(&arg, &dropframe_thresh_arg, argi)) {
333 enc_cfg->rc_dropframe_thresh = arg_parse_uint(&arg);
334 } else if (arg_match(&arg, &tune_content_arg, argi)) {
335 app_input->tune_content = arg_parse_uint(&arg);
336 } else if (arg_match(&arg, &inter_layer_pred_arg, argi)) {
337 app_input->inter_layer_pred = arg_parse_uint(&arg);
338 } else {
339 ++argj;
340 }
341 }
342
343 // There will be a space in front of the string options
344 if (strlen(string_options) > 0)
345 vpx_svc_set_options(svc_ctx, string_options + 1);
346
347 if (passes == 0 || passes == 1) {
348 if (pass) {
349 fprintf(stderr, "pass is ignored since there's only one pass\n");
350 }
351 enc_cfg->g_pass = VPX_RC_ONE_PASS;
352 } else {
353 if (pass == 0) {
354 die("pass must be specified when passes is 2\n");
355 }
356
357 if (fpf_file_name == NULL) {
358 die("fpf must be specified when passes is 2\n");
359 }
360
361 if (pass == 1) {
362 enc_cfg->g_pass = VPX_RC_FIRST_PASS;
363 if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 0)) {
364 fatal("Failed to open statistics store");
365 }
366 } else {
367 enc_cfg->g_pass = VPX_RC_LAST_PASS;
368 if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 1)) {
369 fatal("Failed to open statistics store");
370 }
371 enc_cfg->rc_twopass_stats_in = stats_get(&app_input->rc_stats);
372 }
373 app_input->passes = passes;
374 app_input->pass = pass;
375 }
376
377 if (enc_cfg->rc_target_bitrate > 0) {
378 if (min_bitrate > 0) {
379 enc_cfg->rc_2pass_vbr_minsection_pct =
380 min_bitrate * 100 / enc_cfg->rc_target_bitrate;
381 }
382 if (max_bitrate > 0) {
383 enc_cfg->rc_2pass_vbr_maxsection_pct =
384 max_bitrate * 100 / enc_cfg->rc_target_bitrate;
385 }
386 }
387
388 // Check for unrecognized options
389 for (argi = argv; *argi; ++argi)
390 if (argi[0][0] == '-' && strlen(argi[0]) > 1)
391 die("Error: Unrecognized option %s\n", *argi);
392
393 if (argv[0] == NULL || argv[1] == 0) {
394 usage_exit();
395 }
396 app_input->input_filename = argv[0];
397 app_input->output_filename = argv[1];
398 free(argv);
399
400 if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 ||
401 enc_cfg->g_h % 2)
402 die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h);
403
404 printf(
405 "Codec %s\nframes: %d, skip: %d\n"
406 "layers: %d\n"
407 "width %d, height: %d,\n"
408 "num: %d, den: %d, bitrate: %d,\n"
409 "gop size: %d\n",
410 vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code,
411 app_input->frames_to_skip, svc_ctx->spatial_layers, enc_cfg->g_w,
412 enc_cfg->g_h, enc_cfg->g_timebase.num, enc_cfg->g_timebase.den,
413 enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist);
414 }
415
416 #if OUTPUT_RC_STATS
417 // For rate control encoding stats.
418 struct RateControlStats {
419 // Number of input frames per layer.
420 int layer_input_frames[VPX_MAX_LAYERS];
421 // Total (cumulative) number of encoded frames per layer.
422 int layer_tot_enc_frames[VPX_MAX_LAYERS];
423 // Number of encoded non-key frames per layer.
424 int layer_enc_frames[VPX_MAX_LAYERS];
425 // Framerate per layer (cumulative).
426 double layer_framerate[VPX_MAX_LAYERS];
427 // Target average frame size per layer (per-frame-bandwidth per layer).
428 double layer_pfb[VPX_MAX_LAYERS];
429 // Actual average frame size per layer.
430 double layer_avg_frame_size[VPX_MAX_LAYERS];
431 // Average rate mismatch per layer (|target - actual| / target).
432 double layer_avg_rate_mismatch[VPX_MAX_LAYERS];
433 // Actual encoding bitrate per layer (cumulative).
434 double layer_encoding_bitrate[VPX_MAX_LAYERS];
435 // Average of the short-time encoder actual bitrate.
436 // TODO(marpan): Should we add these short-time stats for each layer?
437 double avg_st_encoding_bitrate;
438 // Variance of the short-time encoder actual bitrate.
439 double variance_st_encoding_bitrate;
440 // Window (number of frames) for computing short-time encoding bitrate.
441 int window_size;
442 // Number of window measurements.
443 int window_count;
444 };
445
446 // Note: these rate control stats assume only 1 key frame in the
447 // sequence (i.e., first frame only).
448 static void set_rate_control_stats(struct RateControlStats *rc,
449 vpx_codec_enc_cfg_t *cfg) {
450 unsigned int sl, tl;
451 // Set the layer (cumulative) framerate and the target layer (non-cumulative)
452 // per-frame-bandwidth, for the rate control encoding stats below.
453 const double framerate = cfg->g_timebase.den / cfg->g_timebase.num;
454
455 for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
456 for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
457 const int layer = sl * cfg->ts_number_layers + tl;
458 if (cfg->ts_number_layers == 1)
459 rc->layer_framerate[layer] = framerate;
460 else
461 rc->layer_framerate[layer] = framerate / cfg->ts_rate_decimator[tl];
462 if (tl > 0) {
463 rc->layer_pfb[layer] =
464 1000.0 *
465 (cfg->layer_target_bitrate[layer] -
466 cfg->layer_target_bitrate[layer - 1]) /
467 (rc->layer_framerate[layer] - rc->layer_framerate[layer - 1]);
468 } else {
469 rc->layer_pfb[layer] = 1000.0 * cfg->layer_target_bitrate[layer] /
470 rc->layer_framerate[layer];
471 }
472 rc->layer_input_frames[layer] = 0;
473 rc->layer_enc_frames[layer] = 0;
474 rc->layer_tot_enc_frames[layer] = 0;
475 rc->layer_encoding_bitrate[layer] = 0.0;
476 rc->layer_avg_frame_size[layer] = 0.0;
477 rc->layer_avg_rate_mismatch[layer] = 0.0;
478 }
479 }
480 rc->window_count = 0;
481 rc->window_size = 15;
482 rc->avg_st_encoding_bitrate = 0.0;
483 rc->variance_st_encoding_bitrate = 0.0;
484 }
485
486 static void printout_rate_control_summary(struct RateControlStats *rc,
487 vpx_codec_enc_cfg_t *cfg,
488 int frame_cnt) {
489 unsigned int sl, tl;
490 double perc_fluctuation = 0.0;
491 int tot_num_frames = 0;
492 printf("Total number of processed frames: %d\n\n", frame_cnt - 1);
493 printf("Rate control layer stats for sl%d tl%d layer(s):\n\n",
494 cfg->ss_number_layers, cfg->ts_number_layers);
495 for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
496 tot_num_frames = 0;
497 for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
498 const int layer = sl * cfg->ts_number_layers + tl;
499 const int num_dropped =
500 (tl > 0)
501 ? (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer])
502 : (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer] -
503 1);
504 tot_num_frames += rc->layer_input_frames[layer];
505 rc->layer_encoding_bitrate[layer] = 0.001 * rc->layer_framerate[layer] *
506 rc->layer_encoding_bitrate[layer] /
507 tot_num_frames;
508 rc->layer_avg_frame_size[layer] =
509 rc->layer_avg_frame_size[layer] / rc->layer_enc_frames[layer];
510 rc->layer_avg_rate_mismatch[layer] = 100.0 *
511 rc->layer_avg_rate_mismatch[layer] /
512 rc->layer_enc_frames[layer];
513 printf("For layer#: sl%d tl%d \n", sl, tl);
514 printf("Bitrate (target vs actual): %d %f.0 kbps\n",
515 cfg->layer_target_bitrate[layer],
516 rc->layer_encoding_bitrate[layer]);
517 printf("Average frame size (target vs actual): %f %f bits\n",
518 rc->layer_pfb[layer], rc->layer_avg_frame_size[layer]);
519 printf("Average rate_mismatch: %f\n", rc->layer_avg_rate_mismatch[layer]);
520 printf(
521 "Number of input frames, encoded (non-key) frames, "
522 "and percent dropped frames: %d %d %f.0 \n",
523 rc->layer_input_frames[layer], rc->layer_enc_frames[layer],
524 100.0 * num_dropped / rc->layer_input_frames[layer]);
525 printf("\n");
526 }
527 }
528 rc->avg_st_encoding_bitrate = rc->avg_st_encoding_bitrate / rc->window_count;
529 rc->variance_st_encoding_bitrate =
530 rc->variance_st_encoding_bitrate / rc->window_count -
531 (rc->avg_st_encoding_bitrate * rc->avg_st_encoding_bitrate);
532 perc_fluctuation = 100.0 * sqrt(rc->variance_st_encoding_bitrate) /
533 rc->avg_st_encoding_bitrate;
534 printf("Short-time stats, for window of %d frames: \n", rc->window_size);
535 printf("Average, rms-variance, and percent-fluct: %f %f %f \n",
536 rc->avg_st_encoding_bitrate, sqrt(rc->variance_st_encoding_bitrate),
537 perc_fluctuation);
538 printf("Num of input, num of encoded (super) frames: %d %d \n", frame_cnt,
539 tot_num_frames);
540 }
541
542 static vpx_codec_err_t parse_superframe_index(const uint8_t *data,
543 size_t data_sz, uint64_t sizes[8],
544 int *count) {
545 // A chunk ending with a byte matching 0xc0 is an invalid chunk unless
546 // it is a super frame index. If the last byte of real video compression
547 // data is 0xc0 the encoder must add a 0 byte. If we have the marker but
548 // not the associated matching marker byte at the front of the index we have
549 // an invalid bitstream and need to return an error.
550
551 uint8_t marker;
552
553 marker = *(data + data_sz - 1);
554 *count = 0;
555
556 if ((marker & 0xe0) == 0xc0) {
557 const uint32_t frames = (marker & 0x7) + 1;
558 const uint32_t mag = ((marker >> 3) & 0x3) + 1;
559 const size_t index_sz = 2 + mag * frames;
560
561 // This chunk is marked as having a superframe index but doesn't have
562 // enough data for it, thus it's an invalid superframe index.
563 if (data_sz < index_sz) return VPX_CODEC_CORRUPT_FRAME;
564
565 {
566 const uint8_t marker2 = *(data + data_sz - index_sz);
567
568 // This chunk is marked as having a superframe index but doesn't have
569 // the matching marker byte at the front of the index therefore it's an
570 // invalid chunk.
571 if (marker != marker2) return VPX_CODEC_CORRUPT_FRAME;
572 }
573
574 {
575 // Found a valid superframe index.
576 uint32_t i, j;
577 const uint8_t *x = &data[data_sz - index_sz + 1];
578
579 for (i = 0; i < frames; ++i) {
580 uint32_t this_sz = 0;
581
582 for (j = 0; j < mag; ++j) this_sz |= (*x++) << (j * 8);
583 sizes[i] = this_sz;
584 }
585 *count = frames;
586 }
587 }
588 return VPX_CODEC_OK;
589 }
590 #endif
591
592 // Example pattern for spatial layers and 2 temporal layers used in the
593 // bypass/flexible mode. The pattern corresponds to the pattern
594 // VP9E_TEMPORAL_LAYERING_MODE_0101 (temporal_layering_mode == 2) used in
595 // non-flexible mode.
596 static void set_frame_flags_bypass_mode_ex0(
597 int tl, int num_spatial_layers, int is_key_frame,
598 vpx_svc_ref_frame_config_t *ref_frame_config) {
599 int sl;
600 for (sl = 0; sl < num_spatial_layers; ++sl)
601 ref_frame_config->update_buffer_slot[sl] = 0;
602
603 for (sl = 0; sl < num_spatial_layers; ++sl) {
604 // Set the buffer idx.
605 if (tl == 0) {
606 ref_frame_config->lst_fb_idx[sl] = sl;
607 if (sl) {
608 if (is_key_frame) {
609 ref_frame_config->lst_fb_idx[sl] = sl - 1;
610 ref_frame_config->gld_fb_idx[sl] = sl;
611 } else {
612 ref_frame_config->gld_fb_idx[sl] = sl - 1;
613 }
614 } else {
615 ref_frame_config->gld_fb_idx[sl] = 0;
616 }
617 ref_frame_config->alt_fb_idx[sl] = 0;
618 } else if (tl == 1) {
619 ref_frame_config->lst_fb_idx[sl] = sl;
620 ref_frame_config->gld_fb_idx[sl] = num_spatial_layers + sl - 1;
621 ref_frame_config->alt_fb_idx[sl] = num_spatial_layers + sl;
622 }
623 // Set the reference and update flags.
624 if (!tl) {
625 if (!sl) {
626 // Base spatial and base temporal (sl = 0, tl = 0)
627 ref_frame_config->reference_last[sl] = 1;
628 ref_frame_config->reference_golden[sl] = 0;
629 ref_frame_config->reference_alt_ref[sl] = 0;
630 ref_frame_config->update_buffer_slot[sl] |=
631 1 << ref_frame_config->lst_fb_idx[sl];
632 } else {
633 if (is_key_frame) {
634 ref_frame_config->reference_last[sl] = 1;
635 ref_frame_config->reference_golden[sl] = 0;
636 ref_frame_config->reference_alt_ref[sl] = 0;
637 ref_frame_config->update_buffer_slot[sl] |=
638 1 << ref_frame_config->gld_fb_idx[sl];
639 } else {
640 // Non-zero spatiall layer.
641 ref_frame_config->reference_last[sl] = 1;
642 ref_frame_config->reference_golden[sl] = 1;
643 ref_frame_config->reference_alt_ref[sl] = 1;
644 ref_frame_config->update_buffer_slot[sl] |=
645 1 << ref_frame_config->lst_fb_idx[sl];
646 }
647 }
648 } else if (tl == 1) {
649 if (!sl) {
650 // Base spatial and top temporal (tl = 1)
651 ref_frame_config->reference_last[sl] = 1;
652 ref_frame_config->reference_golden[sl] = 0;
653 ref_frame_config->reference_alt_ref[sl] = 0;
654 ref_frame_config->update_buffer_slot[sl] |=
655 1 << ref_frame_config->alt_fb_idx[sl];
656 } else {
657 // Non-zero spatial.
658 if (sl < num_spatial_layers - 1) {
659 ref_frame_config->reference_last[sl] = 1;
660 ref_frame_config->reference_golden[sl] = 1;
661 ref_frame_config->reference_alt_ref[sl] = 0;
662 ref_frame_config->update_buffer_slot[sl] |=
663 1 << ref_frame_config->alt_fb_idx[sl];
664 } else if (sl == num_spatial_layers - 1) {
665 // Top spatial and top temporal (non-reference -- doesn't update any
666 // reference buffers)
667 ref_frame_config->reference_last[sl] = 1;
668 ref_frame_config->reference_golden[sl] = 1;
669 ref_frame_config->reference_alt_ref[sl] = 0;
670 }
671 }
672 }
673 }
674 }
675
676 // Example pattern for 2 spatial layers and 2 temporal layers used in the
677 // bypass/flexible mode, except only 1 spatial layer when temporal_layer_id = 1.
678 static void set_frame_flags_bypass_mode_ex1(
679 int tl, int num_spatial_layers, int is_key_frame,
680 vpx_svc_ref_frame_config_t *ref_frame_config) {
681 int sl;
682 for (sl = 0; sl < num_spatial_layers; ++sl)
683 ref_frame_config->update_buffer_slot[sl] = 0;
684
685 if (tl == 0) {
686 if (is_key_frame) {
687 ref_frame_config->lst_fb_idx[1] = 0;
688 ref_frame_config->gld_fb_idx[1] = 1;
689 } else {
690 ref_frame_config->lst_fb_idx[1] = 1;
691 ref_frame_config->gld_fb_idx[1] = 0;
692 }
693 ref_frame_config->alt_fb_idx[1] = 0;
694
695 ref_frame_config->lst_fb_idx[0] = 0;
696 ref_frame_config->gld_fb_idx[0] = 0;
697 ref_frame_config->alt_fb_idx[0] = 0;
698 }
699 if (tl == 1) {
700 ref_frame_config->lst_fb_idx[0] = 0;
701 ref_frame_config->gld_fb_idx[0] = 1;
702 ref_frame_config->alt_fb_idx[0] = 2;
703
704 ref_frame_config->lst_fb_idx[1] = 1;
705 ref_frame_config->gld_fb_idx[1] = 2;
706 ref_frame_config->alt_fb_idx[1] = 3;
707 }
708 // Set the reference and update flags.
709 if (tl == 0) {
710 // Base spatial and base temporal (sl = 0, tl = 0)
711 ref_frame_config->reference_last[0] = 1;
712 ref_frame_config->reference_golden[0] = 0;
713 ref_frame_config->reference_alt_ref[0] = 0;
714 ref_frame_config->update_buffer_slot[0] |=
715 1 << ref_frame_config->lst_fb_idx[0];
716
717 if (is_key_frame) {
718 ref_frame_config->reference_last[1] = 1;
719 ref_frame_config->reference_golden[1] = 0;
720 ref_frame_config->reference_alt_ref[1] = 0;
721 ref_frame_config->update_buffer_slot[1] |=
722 1 << ref_frame_config->gld_fb_idx[1];
723 } else {
724 // Non-zero spatiall layer.
725 ref_frame_config->reference_last[1] = 1;
726 ref_frame_config->reference_golden[1] = 1;
727 ref_frame_config->reference_alt_ref[1] = 1;
728 ref_frame_config->update_buffer_slot[1] |=
729 1 << ref_frame_config->lst_fb_idx[1];
730 }
731 }
732 if (tl == 1) {
733 // Top spatial and top temporal (non-reference -- doesn't update any
734 // reference buffers)
735 ref_frame_config->reference_last[1] = 1;
736 ref_frame_config->reference_golden[1] = 0;
737 ref_frame_config->reference_alt_ref[1] = 0;
738 }
739 }
740
741 int main(int argc, const char **argv) {
742 AppInput app_input;
743 VpxVideoWriter *writer = NULL;
744 VpxVideoInfo info;
745 vpx_codec_ctx_t codec;
746 vpx_codec_enc_cfg_t enc_cfg;
747 SvcContext svc_ctx;
748 vpx_svc_frame_drop_t svc_drop_frame;
749 uint32_t i;
750 uint32_t frame_cnt = 0;
751 vpx_image_t raw;
752 vpx_codec_err_t res;
753 int pts = 0; /* PTS starts at 0 */
754 int frame_duration = 1; /* 1 timebase tick per frame */
755 FILE *infile = NULL;
756 int end_of_stream = 0;
757 int frames_received = 0;
758 #if OUTPUT_RC_STATS
759 VpxVideoWriter *outfile[VPX_SS_MAX_LAYERS] = { NULL };
760 struct RateControlStats rc;
761 vpx_svc_layer_id_t layer_id;
762 vpx_svc_ref_frame_config_t ref_frame_config;
763 unsigned int sl, tl;
764 double sum_bitrate = 0.0;
765 double sum_bitrate2 = 0.0;
766 double framerate = 30.0;
767 #endif
768 struct vpx_usec_timer timer;
769 int64_t cx_time = 0;
770 memset(&svc_ctx, 0, sizeof(svc_ctx));
771 memset(&app_input, 0, sizeof(AppInput));
772 memset(&info, 0, sizeof(VpxVideoInfo));
773 memset(&layer_id, 0, sizeof(vpx_svc_layer_id_t));
774 memset(&rc, 0, sizeof(struct RateControlStats));
775 exec_name = argv[0];
776 parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg);
777
778 // Allocate image buffer
779 #if CONFIG_VP9_HIGHBITDEPTH
780 if (!vpx_img_alloc(&raw,
781 enc_cfg.g_input_bit_depth == 8 ? VPX_IMG_FMT_I420
782 : VPX_IMG_FMT_I42016,
783 enc_cfg.g_w, enc_cfg.g_h, 32)) {
784 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
785 }
786 #else
787 if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32)) {
788 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
789 }
790 #endif // CONFIG_VP9_HIGHBITDEPTH
791
792 if (!(infile = fopen(app_input.input_filename, "rb")))
793 die("Failed to open %s for reading\n", app_input.input_filename);
794
795 // Initialize codec
796 if (vpx_svc_init(&svc_ctx, &codec, vpx_codec_vp9_cx(), &enc_cfg) !=
797 VPX_CODEC_OK)
798 die("Failed to initialize encoder\n");
799
800 #if OUTPUT_RC_STATS
801 rc.window_count = 1;
802 rc.window_size = 15; // Silence a static analysis warning.
803 rc.avg_st_encoding_bitrate = 0.0;
804 rc.variance_st_encoding_bitrate = 0.0;
805 if (svc_ctx.output_rc_stat) {
806 set_rate_control_stats(&rc, &enc_cfg);
807 framerate = enc_cfg.g_timebase.den / enc_cfg.g_timebase.num;
808 }
809 #endif
810
811 info.codec_fourcc = VP9_FOURCC;
812 info.time_base.numerator = enc_cfg.g_timebase.num;
813 info.time_base.denominator = enc_cfg.g_timebase.den;
814
815 if (!(app_input.passes == 2 && app_input.pass == 1)) {
816 // We don't save the bitstream for the 1st pass on two pass rate control
817 writer =
818 vpx_video_writer_open(app_input.output_filename, kContainerIVF, &info);
819 if (!writer)
820 die("Failed to open %s for writing\n", app_input.output_filename);
821 }
822 #if OUTPUT_RC_STATS
823 // Write out spatial layer stream.
824 // TODO(marpan/jianj): allow for writing each spatial and temporal stream.
825 if (svc_ctx.output_rc_stat) {
826 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
827 char file_name[PATH_MAX];
828
829 snprintf(file_name, sizeof(file_name), "%s_s%d.ivf",
830 app_input.output_filename, sl);
831 outfile[sl] = vpx_video_writer_open(file_name, kContainerIVF, &info);
832 if (!outfile[sl]) die("Failed to open %s for writing", file_name);
833 }
834 }
835 #endif
836
837 // skip initial frames
838 for (i = 0; i < app_input.frames_to_skip; ++i) vpx_img_read(&raw, infile);
839
840 if (svc_ctx.speed != -1)
841 vpx_codec_control(&codec, VP8E_SET_CPUUSED, svc_ctx.speed);
842 if (svc_ctx.threads) {
843 vpx_codec_control(&codec, VP9E_SET_TILE_COLUMNS, get_msb(svc_ctx.threads));
844 if (svc_ctx.threads > 1)
845 vpx_codec_control(&codec, VP9E_SET_ROW_MT, 1);
846 else
847 vpx_codec_control(&codec, VP9E_SET_ROW_MT, 0);
848 }
849 if (svc_ctx.speed >= 5 && svc_ctx.aqmode == 1)
850 vpx_codec_control(&codec, VP9E_SET_AQ_MODE, 3);
851 if (svc_ctx.speed >= 5)
852 vpx_codec_control(&codec, VP8E_SET_STATIC_THRESHOLD, 1);
853 vpx_codec_control(&codec, VP8E_SET_MAX_INTRA_BITRATE_PCT, 900);
854
855 vpx_codec_control(&codec, VP9E_SET_SVC_INTER_LAYER_PRED,
856 app_input.inter_layer_pred);
857
858 vpx_codec_control(&codec, VP9E_SET_NOISE_SENSITIVITY, 0);
859
860 vpx_codec_control(&codec, VP9E_SET_TUNE_CONTENT, app_input.tune_content);
861
862 svc_drop_frame.framedrop_mode = FULL_SUPERFRAME_DROP;
863 for (sl = 0; sl < (unsigned int)svc_ctx.spatial_layers; ++sl)
864 svc_drop_frame.framedrop_thresh[sl] = enc_cfg.rc_dropframe_thresh;
865 svc_drop_frame.max_consec_drop = INT_MAX;
866 vpx_codec_control(&codec, VP9E_SET_SVC_FRAME_DROP_LAYER, &svc_drop_frame);
867
868 // Encode frames
869 while (!end_of_stream) {
870 vpx_codec_iter_t iter = NULL;
871 const vpx_codec_cx_pkt_t *cx_pkt;
872 // Example patterns for bypass/flexible mode:
873 // example_pattern = 0: 2 temporal layers, and spatial_layers = 1,2,3. Exact
874 // to fixed SVC patterns. example_pattern = 1: 2 spatial and 2 temporal
875 // layers, with SL0 only has TL0, and SL1 has both TL0 and TL1. This example
876 // uses the extended API.
877 int example_pattern = 0;
878 if (frame_cnt >= app_input.frames_to_code || !vpx_img_read(&raw, infile)) {
879 // We need one extra vpx_svc_encode call at end of stream to flush
880 // encoder and get remaining data
881 end_of_stream = 1;
882 }
883
884 // For BYPASS/FLEXIBLE mode, set the frame flags (reference and updates)
885 // and the buffer indices for each spatial layer of the current
886 // (super)frame to be encoded. The spatial and temporal layer_id for the
887 // current frame also needs to be set.
888 // TODO(marpan): Should rename the "VP9E_TEMPORAL_LAYERING_MODE_BYPASS"
889 // mode to "VP9E_LAYERING_MODE_BYPASS".
890 if (svc_ctx.temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_BYPASS) {
891 layer_id.spatial_layer_id = 0;
892 // Example for 2 temporal layers.
893 if (frame_cnt % 2 == 0) {
894 layer_id.temporal_layer_id = 0;
895 for (i = 0; i < VPX_SS_MAX_LAYERS; i++)
896 layer_id.temporal_layer_id_per_spatial[i] = 0;
897 } else {
898 layer_id.temporal_layer_id = 1;
899 for (i = 0; i < VPX_SS_MAX_LAYERS; i++)
900 layer_id.temporal_layer_id_per_spatial[i] = 1;
901 }
902 if (example_pattern == 1) {
903 // example_pattern 1 is hard-coded for 2 spatial and 2 temporal layers.
904 assert(svc_ctx.spatial_layers == 2);
905 assert(svc_ctx.temporal_layers == 2);
906 if (frame_cnt % 2 == 0) {
907 // Spatial layer 0 and 1 are encoded.
908 layer_id.temporal_layer_id_per_spatial[0] = 0;
909 layer_id.temporal_layer_id_per_spatial[1] = 0;
910 layer_id.spatial_layer_id = 0;
911 } else {
912 // Only spatial layer 1 is encoded here.
913 layer_id.temporal_layer_id_per_spatial[1] = 1;
914 layer_id.spatial_layer_id = 1;
915 }
916 }
917 vpx_codec_control(&codec, VP9E_SET_SVC_LAYER_ID, &layer_id);
918 // TODO(jianj): Fix the parameter passing for "is_key_frame" in
919 // set_frame_flags_bypass_model() for case of periodic key frames.
920 if (example_pattern == 0) {
921 set_frame_flags_bypass_mode_ex0(layer_id.temporal_layer_id,
922 svc_ctx.spatial_layers, frame_cnt == 0,
923 &ref_frame_config);
924 } else if (example_pattern == 1) {
925 set_frame_flags_bypass_mode_ex1(layer_id.temporal_layer_id,
926 svc_ctx.spatial_layers, frame_cnt == 0,
927 &ref_frame_config);
928 }
929 ref_frame_config.duration[0] = frame_duration * 1;
930 ref_frame_config.duration[1] = frame_duration * 1;
931
932 vpx_codec_control(&codec, VP9E_SET_SVC_REF_FRAME_CONFIG,
933 &ref_frame_config);
934 // Keep track of input frames, to account for frame drops in rate control
935 // stats/metrics.
936 for (sl = 0; sl < (unsigned int)enc_cfg.ss_number_layers; ++sl) {
937 ++rc.layer_input_frames[sl * enc_cfg.ts_number_layers +
938 layer_id.temporal_layer_id];
939 }
940 } else {
941 // For the fixed pattern SVC, temporal layer is given by superframe count.
942 unsigned int tl = 0;
943 if (enc_cfg.ts_number_layers == 2)
944 tl = (frame_cnt % 2 != 0);
945 else if (enc_cfg.ts_number_layers == 3) {
946 if (frame_cnt % 2 != 0) tl = 2;
947 if ((frame_cnt > 1) && ((frame_cnt - 2) % 4 == 0)) tl = 1;
948 }
949 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl)
950 ++rc.layer_input_frames[sl * enc_cfg.ts_number_layers + tl];
951 }
952
953 vpx_usec_timer_start(&timer);
954 res = vpx_svc_encode(
955 &svc_ctx, &codec, (end_of_stream ? NULL : &raw), pts, frame_duration,
956 svc_ctx.speed >= 5 ? VPX_DL_REALTIME : VPX_DL_GOOD_QUALITY);
957 vpx_usec_timer_mark(&timer);
958 cx_time += vpx_usec_timer_elapsed(&timer);
959
960 fflush(stdout);
961 if (res != VPX_CODEC_OK) {
962 die_codec(&codec, "Failed to encode frame");
963 }
964
965 while ((cx_pkt = vpx_codec_get_cx_data(&codec, &iter)) != NULL) {
966 switch (cx_pkt->kind) {
967 case VPX_CODEC_CX_FRAME_PKT: {
968 SvcInternal_t *const si = (SvcInternal_t *)svc_ctx.internal;
969 if (cx_pkt->data.frame.sz > 0) {
970 #if OUTPUT_RC_STATS
971 uint64_t sizes[8];
972 uint64_t sizes_parsed[8];
973 int count = 0;
974 vp9_zero(sizes);
975 vp9_zero(sizes_parsed);
976 #endif
977 vpx_video_writer_write_frame(writer, cx_pkt->data.frame.buf,
978 cx_pkt->data.frame.sz,
979 cx_pkt->data.frame.pts);
980 #if OUTPUT_RC_STATS
981 // TODO(marpan): Put this (to line728) in separate function.
982 if (svc_ctx.output_rc_stat) {
983 int num_layers_encoded = 0;
984 vpx_codec_control(&codec, VP9E_GET_SVC_LAYER_ID, &layer_id);
985 parse_superframe_index(cx_pkt->data.frame.buf,
986 cx_pkt->data.frame.sz, sizes_parsed,
987 &count);
988 if (enc_cfg.ss_number_layers == 1)
989 sizes[0] = cx_pkt->data.frame.sz;
990 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
991 sizes[sl] = 0;
992 if (cx_pkt->data.frame.spatial_layer_encoded[sl]) {
993 sizes[sl] = sizes_parsed[num_layers_encoded];
994 num_layers_encoded++;
995 }
996 }
997 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
998 unsigned int sl2;
999 uint64_t tot_size = 0;
1000 for (sl2 = 0; sl2 <= sl; ++sl2) {
1001 if (cx_pkt->data.frame.spatial_layer_encoded[sl2])
1002 tot_size += sizes[sl2];
1003 }
1004 if (tot_size > 0)
1005 vpx_video_writer_write_frame(
1006 outfile[sl], cx_pkt->data.frame.buf, (size_t)(tot_size),
1007 cx_pkt->data.frame.pts);
1008 }
1009 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
1010 if (cx_pkt->data.frame.spatial_layer_encoded[sl]) {
1011 for (tl = layer_id.temporal_layer_id;
1012 tl < enc_cfg.ts_number_layers; ++tl) {
1013 const int layer = sl * enc_cfg.ts_number_layers + tl;
1014 ++rc.layer_tot_enc_frames[layer];
1015 rc.layer_encoding_bitrate[layer] += 8.0 * sizes[sl];
1016 // Keep count of rate control stats per layer, for non-key
1017 // frames.
1018 if (tl == (unsigned int)layer_id.temporal_layer_id &&
1019 !(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY)) {
1020 rc.layer_avg_frame_size[layer] += 8.0 * sizes[sl];
1021 rc.layer_avg_rate_mismatch[layer] +=
1022 fabs(8.0 * sizes[sl] - rc.layer_pfb[layer]) /
1023 rc.layer_pfb[layer];
1024 ++rc.layer_enc_frames[layer];
1025 }
1026 }
1027 }
1028 }
1029
1030 // Update for short-time encoding bitrate states, for moving
1031 // window of size rc->window, shifted by rc->window / 2.
1032 // Ignore first window segment, due to key frame.
1033 if (frame_cnt > (unsigned int)rc.window_size) {
1034 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
1035 if (cx_pkt->data.frame.spatial_layer_encoded[sl])
1036 sum_bitrate += 0.001 * 8.0 * sizes[sl] * framerate;
1037 }
1038 if (frame_cnt % rc.window_size == 0) {
1039 rc.window_count += 1;
1040 rc.avg_st_encoding_bitrate += sum_bitrate / rc.window_size;
1041 rc.variance_st_encoding_bitrate +=
1042 (sum_bitrate / rc.window_size) *
1043 (sum_bitrate / rc.window_size);
1044 sum_bitrate = 0.0;
1045 }
1046 }
1047
1048 // Second shifted window.
1049 if (frame_cnt >
1050 (unsigned int)(rc.window_size + rc.window_size / 2)) {
1051 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
1052 sum_bitrate2 += 0.001 * 8.0 * sizes[sl] * framerate;
1053 }
1054
1055 if (frame_cnt > (unsigned int)(2 * rc.window_size) &&
1056 frame_cnt % rc.window_size == 0) {
1057 rc.window_count += 1;
1058 rc.avg_st_encoding_bitrate += sum_bitrate2 / rc.window_size;
1059 rc.variance_st_encoding_bitrate +=
1060 (sum_bitrate2 / rc.window_size) *
1061 (sum_bitrate2 / rc.window_size);
1062 sum_bitrate2 = 0.0;
1063 }
1064 }
1065 }
1066 #endif
1067 }
1068 /*
1069 printf("SVC frame: %d, kf: %d, size: %d, pts: %d\n", frames_received,
1070 !!(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY),
1071 (int)cx_pkt->data.frame.sz, (int)cx_pkt->data.frame.pts);
1072 */
1073 if (enc_cfg.ss_number_layers == 1 && enc_cfg.ts_number_layers == 1)
1074 si->bytes_sum[0] += (int)cx_pkt->data.frame.sz;
1075 ++frames_received;
1076 break;
1077 }
1078 case VPX_CODEC_STATS_PKT: {
1079 stats_write(&app_input.rc_stats, cx_pkt->data.twopass_stats.buf,
1080 cx_pkt->data.twopass_stats.sz);
1081 break;
1082 }
1083 default: { break; }
1084 }
1085 }
1086
1087 if (!end_of_stream) {
1088 ++frame_cnt;
1089 pts += frame_duration;
1090 }
1091 }
1092
1093 printf("Processed %d frames\n", frame_cnt);
1094 fclose(infile);
1095 #if OUTPUT_RC_STATS
1096 if (svc_ctx.output_rc_stat) {
1097 printout_rate_control_summary(&rc, &enc_cfg, frame_cnt);
1098 printf("\n");
1099 }
1100 #endif
1101 if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec");
1102 if (app_input.passes == 2) stats_close(&app_input.rc_stats, 1);
1103 if (writer) {
1104 vpx_video_writer_close(writer);
1105 }
1106 #if OUTPUT_RC_STATS
1107 if (svc_ctx.output_rc_stat) {
1108 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
1109 vpx_video_writer_close(outfile[sl]);
1110 }
1111 }
1112 #endif
1113 printf("Frame cnt and encoding time/FPS stats for encoding: %d %f %f \n",
1114 frame_cnt, 1000 * (float)cx_time / (double)(frame_cnt * 1000000),
1115 1000000 * (double)frame_cnt / (double)cx_time);
1116 vpx_img_free(&raw);
1117 // display average size, psnr
1118 vpx_svc_dump_statistics(&svc_ctx);
1119 vpx_svc_release(&svc_ctx);
1120 return EXIT_SUCCESS;
1121 }
vpx_codec_cx_pkt::twopass_stats
vpx_fixed_buf_t twopass_stats
Definition: vpx_encoder.h:182
vpx_codec_enc_cfg::ts_number_layers
unsigned int ts_number_layers
Number of temporal coding layers.
Definition: vpx_encoder.h:644
VP8E_SET_CPUUSED
Codec control function to set encoder internal speed settings.
Definition: vp8cx.h:155
VPX_MAX_LAYERS
#define VPX_MAX_LAYERS
Definition: vpx_encoder.h:43
vpx_svc_ref_frame_config::reference_alt_ref
int reference_alt_ref[5]
Definition: vp8cx.h:825
vpx_image
Image Descriptor.
Definition: vpx_image.h:71
vpx_encoder.h
Describes the encoder algorithm interface to applications.
vpx_codec_iface_name
const char * vpx_codec_iface_name(vpx_codec_iface_t *iface)
Return the name for a given interface.
VP9E_SET_SVC_INTER_LAYER_PRED
Codec control function to constrain the inter-layer prediction (prediction of lower spatial resolutio...
Definition: vp8cx.h:616
vpx_codec_err_to_string
const char * vpx_codec_err_to_string(vpx_codec_err_t err)
Convert error number to printable string.
vpx_svc_ref_frame_config::lst_fb_idx
int lst_fb_idx[5]
Definition: vp8cx.h:815
VP9E_SET_TUNE_CONTENT
Codec control function to set content type.
Definition: vp8cx.h:460
vpx_codec_enc_cfg::g_timebase
struct vpx_rational g_timebase
Stream timebase units.
Definition: vpx_encoder.h:343
VP9E_SET_NOISE_SENSITIVITY
Codec control function to set noise sensitivity.
Definition: vp8cx.h:418
vpx_codec_enc_cfg::layer_target_bitrate
unsigned int layer_target_bitrate[12]
Target bitrate for each spatial/temporal layer.
Definition: vpx_encoder.h:684
vpx_svc_frame_drop::framedrop_mode
SVC_LAYER_DROP_MODE framedrop_mode
Definition: vp8cx.h:851
vpx_codec_enc_cfg::g_input_bit_depth
unsigned int g_input_bit_depth
Bit-depth of the input frames.
Definition: vpx_encoder.h:329
vpx_rational::den
int den
Definition: vpx_encoder.h:220
VPX_CODEC_STATS_PKT
Definition: vpx_encoder.h:148
vpx_svc_frame_drop::framedrop_thresh
int framedrop_thresh[5]
Definition: vp8cx.h:849
vpx_codec_enc_cfg::kf_max_dist
unsigned int kf_max_dist
Keyframe maximum interval.
Definition: vpx_encoder.h:614
vpx_codec_enc_cfg::g_lag_in_frames
unsigned int g_lag_in_frames
Allow lagged encoding.
Definition: vpx_encoder.h:372
vpx_codec_enc_cfg
Encoder configuration structure.
Definition: vpx_encoder.h:268
vpx_svc_ref_frame_config::reference_golden
int reference_golden[5]
Definition: vp8cx.h:824
VPX_CODEC_CORRUPT_FRAME
The coded data for this stream is corrupt or incomplete.
Definition: vpx_codec.h:130
VP9E_SET_ROW_MT
Codec control function to set row level multi-threading.
Definition: vp8cx.h:567
VP8E_SET_MAX_INTRA_BITRATE_PCT
Codec control function to set Max data rate for Intra frames.
Definition: vp8cx.h:254
vpx_codec_cx_pkt
Encoder output packet.
Definition: vpx_encoder.h:159
vpx_fixed_buf::buf
void * buf
Definition: vpx_encoder.h:97
vpx_codec_enc_cfg::ts_rate_decimator
unsigned int ts_rate_decimator[5]
Frame rate decimation factor for each temporal layer.
Definition: vpx_encoder.h:658
vpx_codec_enc_cfg::kf_min_dist
unsigned int kf_min_dist
Keyframe minimum interval.
Definition: vpx_encoder.h:605
VPX_RC_FIRST_PASS
Definition: vpx_encoder.h:226
vpx_svc_frame_drop
vp9 svc frame dropping parameters.
Definition: vp8cx.h:848
vpx_codec_enc_cfg::g_profile
unsigned int g_profile
Bitstream profile to use.
Definition: vpx_encoder.h:295
VPX_RC_LAST_PASS
Definition: vpx_encoder.h:227
VP9E_SET_TILE_COLUMNS
Codec control function to set number of tile columns.
Definition: vp8cx.h:348
vpx_codec_cx_pkt::frame
struct vpx_codec_cx_pkt::@1::@2 frame
VPX_SS_MAX_LAYERS
#define VPX_SS_MAX_LAYERS
Definition: vpx_encoder.h:46
vpx_img_alloc
vpx_image_t * vpx_img_alloc(vpx_image_t *img, vpx_img_fmt_t fmt, unsigned int d_w, unsigned int d_h, unsigned int align)
Open a descriptor, allocating storage for the underlying image.
VPX_IMG_FMT_I420
Definition: vpx_image.h:42
vpx_codec_enc_cfg::g_w
unsigned int g_w
Width of the frame.
Definition: vpx_encoder.h:304
vpx_svc_ref_frame_config::reference_last
int reference_last[5]
Definition: vp8cx.h:823
vpx_svc_ref_frame_config::update_buffer_slot
int update_buffer_slot[5]
Definition: vp8cx.h:818
VP9E_SET_AQ_MODE
Codec control function to set adaptive quantization mode.
Definition: vp8cx.h:395
VP9E_GET_SVC_LAYER_ID
Codec control function to get svc layer ID.
Definition: vp8cx.h:468
vpx_codec_enc_cfg::g_h
unsigned int g_h
Height of the frame.
Definition: vpx_encoder.h:313
vpx_codec_cx_pkt::kind
enum vpx_codec_cx_pkt_kind kind
Definition: vpx_encoder.h:160
vpx_codec_enc_cfg::rc_dropframe_thresh
unsigned int rc_dropframe_thresh
Temporal resampling configuration, if supported by the codec.
Definition: vpx_encoder.h:391
vpx_svc_layer_id
vp9 svc layer parameters
Definition: vp8cx.h:799
VPX_CODEC_OK
Operation completed without error.
Definition: vpx_codec.h:92
vpx_img_free
void vpx_img_free(vpx_image_t *img)
Close an image descriptor.
vpx_codec_enc_cfg::rc_target_bitrate
unsigned int rc_target_bitrate
Target data rate.
Definition: vpx_encoder.h:460
VPX_DL_REALTIME
#define VPX_DL_REALTIME
deadline parameter analogous to VPx REALTIME mode.
Definition: vpx_encoder.h:830
vpx_rational::num
int num
Definition: vpx_encoder.h:219
VPX_BITS_12
Definition: vpx_codec.h:220
vpx_codec_enc_config_default
vpx_codec_err_t vpx_codec_enc_config_default(vpx_codec_iface_t *iface, vpx_codec_enc_cfg_t *cfg, unsigned int usage)
Get a default configuration.
VP9E_SET_SVC_REF_FRAME_CONFIG
Codec control function to set the frame flags and buffer indices for spatial layers. The frame flags and buffer indices are set using the struct vpx_svc_ref_frame_config defined below.
Definition: vp8cx.h:542
vpx_codec_enc_cfg::g_pass
enum vpx_enc_pass g_pass
Multi-pass Encoding Mode.
Definition: vpx_encoder.h:358
VP9E_SET_SVC_FRAME_DROP_LAYER
Codec control function to set mode and thresholds for frame dropping in SVC. Drop frame thresholds ar...
Definition: vp8cx.h:625
VPX_DL_GOOD_QUALITY
#define VPX_DL_GOOD_QUALITY
deadline parameter analogous to VPx GOOD QUALITY mode.
Definition: vpx_encoder.h:832
vpx_codec_enc_cfg::ss_number_layers
unsigned int ss_number_layers
Number of spatial coding layers.
Definition: vpx_encoder.h:624
vpx_codec_enc_cfg::g_bit_depth
vpx_bit_depth_t g_bit_depth
Bit-depth of the codec.
Definition: vpx_encoder.h:321
vp8cx.h
Provides definitions for using VP8 or VP9 encoder algorithm within the vpx Codec Interface.
VP9E_TEMPORAL_LAYERING_MODE_BYPASS
Bypass mode. Used when application needs to control temporal layering. This will only work when the n...
Definition: vp8cx.h:705
FULL_SUPERFRAME_DROP
Definition: vp8cx.h:838
vpx_codec_err_t
vpx_codec_err_t
Algorithm return codes.
Definition: vpx_codec.h:90
vpx_codec_get_cx_data
const vpx_codec_cx_pkt_t * vpx_codec_get_cx_data(vpx_codec_ctx_t *ctx, vpx_codec_iter_t *iter)
Encoded data iterator.
vpx_codec_cx_pkt::data
union vpx_codec_cx_pkt::@1 data
vpx_codec_enc_cfg::temporal_layering_mode
int temporal_layering_mode
Temporal layering mode indicating which temporal layering scheme to use.
Definition: vpx_encoder.h:693
vpx_codec_enc_cfg::rc_twopass_stats_in
vpx_fixed_buf_t rc_twopass_stats_in
Two-pass stats buffer.
Definition: vpx_encoder.h:447
VPX_IMG_FMT_I42016
Definition: vpx_image.h:46
vpx_svc_frame_drop::max_consec_drop
int max_consec_drop
Definition: vp8cx.h:852
VPX_CQ
Definition: vpx_encoder.h:234
vpx_codec_control
#define vpx_codec_control(ctx, id, data)
vpx_codec_control wrapper macro
Definition: vpx_codec.h:404
vpx_codec_destroy
vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx)
Destroy a codec instance.
vpx_fixed_buf::sz
size_t sz
Definition: vpx_encoder.h:98
VPX_BITS_8
Definition: vpx_codec.h:218
vpx_svc_ref_frame_config
vp9 svc frame flag parameters.
Definition: vp8cx.h:814
VP8E_SET_STATIC_THRESHOLD
Codec control function to set the threshold for MBs treated static.
Definition: vp8cx.h:185
vpx_svc_ref_frame_config::duration
int64_t duration[5]
Definition: vp8cx.h:826
VPX_FRAME_IS_KEY
#define VPX_FRAME_IS_KEY
Definition: vpx_encoder.h:116
VPX_BITS_10
Definition: vpx_codec.h:219
vpx_svc_ref_frame_config::alt_fb_idx
int alt_fb_idx[5]
Definition: vp8cx.h:817
vpx_codec_iter_t
const void * vpx_codec_iter_t
Iterator.
Definition: vpx_codec.h:187
VPX_CODEC_CX_FRAME_PKT
Definition: vpx_encoder.h:147
vpx_codec_enc_cfg::rc_2pass_vbr_maxsection_pct
unsigned int rc_2pass_vbr_maxsection_pct
Two-pass mode per-GOP maximum bitrate.
Definition: vpx_encoder.h:577
vpx_codec_enc_cfg::g_error_resilient
vpx_codec_er_flags_t g_error_resilient
Enable error resilient modes.
Definition: vpx_encoder.h:351
vpx_codec_enc_cfg::rc_2pass_vbr_minsection_pct
unsigned int rc_2pass_vbr_minsection_pct
Two-pass mode per-GOP minimum bitrate.
Definition: vpx_encoder.h:570
vpx_svc_ref_frame_config::gld_fb_idx
int gld_fb_idx[5]
Definition: vp8cx.h:816
VP9E_SET_SVC_LAYER_ID
Codec control function to set svc layer for spatial and temporal.
Definition: vp8cx.h:450
vpx_codec_enc_cfg::rc_end_usage
enum vpx_rc_mode rc_end_usage
Rate control algorithm to use.
Definition: vpx_encoder.h:440
VPX_RC_ONE_PASS
Definition: vpx_encoder.h:225
vpx_codec_ctx
Codec context structure.
Definition: vpx_codec.h:197