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#include "./y4minput.h"
34
35#define OUTPUT_RC_STATS 1
36
37#define SIMULCAST_MODE 0
38
39 static const arg_def_t outputfile =
40 ARG_DEF("o", "output", 1, "Output filename");
41 static const arg_def_t skip_frames_arg =
42 ARG_DEF("s", "skip-frames", 1, "input frames to skip");
43 static const arg_def_t frames_arg =
44 ARG_DEF("f", "frames", 1, "number of frames to encode");
45 static const arg_def_t threads_arg =
46 ARG_DEF("th", "threads", 1, "number of threads to use");
47#if OUTPUT_RC_STATS
48 static const arg_def_t output_rc_stats_arg =
49 ARG_DEF("rcstat", "output_rc_stats", 1, "output rc stats");
50#endif
51 static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width");
52 static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height");
53 static const arg_def_t timebase_arg =
54 ARG_DEF("t", "timebase", 1, "timebase (num/den)");
55 static const arg_def_t bitrate_arg = ARG_DEF(
56 "b", "target-bitrate", 1, "encoding bitrate, in kilobits per second");
57 static const arg_def_t spatial_layers_arg =
58 ARG_DEF("sl", "spatial-layers", 1, "number of spatial SVC layers");
59 static const arg_def_t temporal_layers_arg =
60 ARG_DEF("tl", "temporal-layers", 1, "number of temporal SVC layers");
61 static const arg_def_t temporal_layering_mode_arg =
62 ARG_DEF("tlm", "temporal-layering-mode", 1,
63 "temporal layering scheme."
64 "VP9E_TEMPORAL_LAYERING_MODE");
65 static const arg_def_t kf_dist_arg =
66 ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes");
67 static const arg_def_t scale_factors_arg =
68 ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)");
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 &outputfile,
114 &width_arg,
115 &height_arg,
116 &timebase_arg,
117 &bitrate_arg,
118 &skip_frames_arg,
119 &spatial_layers_arg,
120 &kf_dist_arg,
121 &scale_factors_arg,
122 &min_q_arg,
123 &max_q_arg,
124 &min_bitrate_arg,
125 &max_bitrate_arg,
126 &temporal_layers_arg,
127 &temporal_layering_mode_arg,
128 &lag_in_frame_arg,
129 &threads_arg,
130 &aqmode_arg,
131#if OUTPUT_RC_STATS
132 &output_rc_stats_arg,
133#endif
134
135#if CONFIG_VP9_HIGHBITDEPTH
136 &bitdepth_arg,
137#endif
138 &speed_arg,
139 &rc_end_usage_arg,
140 &bitrates_arg,
141 &dropframe_thresh_arg,
142 &tune_content_arg,
143 &inter_layer_pred_arg,
144 NULL };
145
146 static const uint32_t default_frames_to_skip = 0;
147 static const uint32_t default_frames_to_code = 60 * 60;
148 static const uint32_t default_width = 1920;
149 static const uint32_t default_height = 1080;
150 static const uint32_t default_timebase_num = 1;
151 static const uint32_t default_timebase_den = 60;
152 static const uint32_t default_bitrate = 1000;
153 static const uint32_t default_spatial_layers = 5;
154 static const uint32_t default_temporal_layers = 1;
155 static const uint32_t default_kf_dist = 100;
156 static const uint32_t default_temporal_layering_mode = 0;
157 static const uint32_t default_output_rc_stats = 0;
158 static const int32_t default_speed = -1; // -1 means use library default.
159 static const uint32_t default_threads = 0; // zero means use library default.
160
161 typedef struct {
162 const char *output_filename;
163 uint32_t frames_to_code;
164 uint32_t frames_to_skip;
165 struct VpxInputContext input_ctx;
166 stats_io_t rc_stats;
167 int tune_content;
168 int inter_layer_pred;
169} AppInput;
170
171 static const char *exec_name;
172
173 void usage_exit(void) {
174 fprintf(stderr, "Usage: %s <options> input_filename -o output_filename\n",
175 exec_name);
176 fprintf(stderr, "Options:\n");
177 arg_show_usage(stderr, svc_args);
178 exit(EXIT_FAILURE);
179}
180
181 static void parse_command_line(int argc, const char **argv_,
182 AppInput *app_input, SvcContext *svc_ctx,
183 vpx_codec_enc_cfg_t *enc_cfg) {
184 struct arg arg;
185 char **argv = NULL;
186 char **argi = NULL;
187 char **argj = NULL;
188 vpx_codec_err_t res;
189 unsigned int min_bitrate = 0;
190 unsigned int max_bitrate = 0;
191 char string_options[1024] = { 0 };
192
193 // initialize SvcContext with parameters that will be passed to vpx_svc_init
194 svc_ctx->log_level = SVC_LOG_DEBUG;
195 svc_ctx->spatial_layers = default_spatial_layers;
196 svc_ctx->temporal_layers = default_temporal_layers;
197 svc_ctx->temporal_layering_mode = default_temporal_layering_mode;
198#if OUTPUT_RC_STATS
199 svc_ctx->output_rc_stat = default_output_rc_stats;
200#endif
201 svc_ctx->speed = default_speed;
202 svc_ctx->threads = default_threads;
203
204 // start with default encoder configuration
205 res = vpx_codec_enc_config_default(vpx_codec_vp9_cx(), enc_cfg, 0);
206 if (res) {
207 die("Failed to get config: %s\n", vpx_codec_err_to_string(res));
208 }
209 // update enc_cfg with app default values
210 enc_cfg->g_w = default_width;
211 enc_cfg->g_h = default_height;
212 enc_cfg->g_timebase.num = default_timebase_num;
213 enc_cfg->g_timebase.den = default_timebase_den;
214 enc_cfg->rc_target_bitrate = default_bitrate;
215 enc_cfg->kf_min_dist = default_kf_dist;
216 enc_cfg->kf_max_dist = default_kf_dist;
217 enc_cfg->rc_end_usage = VPX_CQ;
218
219 // initialize AppInput with default values
220 app_input->frames_to_code = default_frames_to_code;
221 app_input->frames_to_skip = default_frames_to_skip;
222
223 // process command line options
224 argv = argv_dup(argc - 1, argv_ + 1);
225 if (!argv) {
226 fprintf(stderr, "Error allocating argument list\n");
227 exit(EXIT_FAILURE);
228 }
229 for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
230 arg.argv_step = 1;
231
232 if (arg_match(&arg, &frames_arg, argi)) {
233 app_input->frames_to_code = arg_parse_uint(&arg);
234 } else if (arg_match(&arg, &outputfile, argi)) {
235 app_input->output_filename = arg.val;
236 } else if (arg_match(&arg, &width_arg, argi)) {
237 enc_cfg->g_w = arg_parse_uint(&arg);
238 } else if (arg_match(&arg, &height_arg, argi)) {
239 enc_cfg->g_h = arg_parse_uint(&arg);
240 } else if (arg_match(&arg, &timebase_arg, argi)) {
241 enc_cfg->g_timebase = arg_parse_rational(&arg);
242 } else if (arg_match(&arg, &bitrate_arg, argi)) {
243 enc_cfg->rc_target_bitrate = arg_parse_uint(&arg);
244 } else if (arg_match(&arg, &skip_frames_arg, argi)) {
245 app_input->frames_to_skip = arg_parse_uint(&arg);
246 } else if (arg_match(&arg, &spatial_layers_arg, argi)) {
247 svc_ctx->spatial_layers = arg_parse_uint(&arg);
248 } else if (arg_match(&arg, &temporal_layers_arg, argi)) {
249 svc_ctx->temporal_layers = arg_parse_uint(&arg);
250#if OUTPUT_RC_STATS
251 } else if (arg_match(&arg, &output_rc_stats_arg, argi)) {
252 svc_ctx->output_rc_stat = arg_parse_uint(&arg);
253#endif
254 } else if (arg_match(&arg, &speed_arg, argi)) {
255 svc_ctx->speed = arg_parse_uint(&arg);
256 if (svc_ctx->speed > 9) {
257 warn("Mapping speed %d to speed 9.\n", svc_ctx->speed);
258 }
259 } else if (arg_match(&arg, &aqmode_arg, argi)) {
260 svc_ctx->aqmode = arg_parse_uint(&arg);
261 } else if (arg_match(&arg, &threads_arg, argi)) {
262 svc_ctx->threads = arg_parse_uint(&arg);
263 } else if (arg_match(&arg, &temporal_layering_mode_arg, argi)) {
264 svc_ctx->temporal_layering_mode = enc_cfg->temporal_layering_mode =
265 arg_parse_int(&arg);
266 if (svc_ctx->temporal_layering_mode) {
267 enc_cfg->g_error_resilient = 1;
268 }
269 } else if (arg_match(&arg, &kf_dist_arg, argi)) {
270 enc_cfg->kf_min_dist = arg_parse_uint(&arg);
271 enc_cfg->kf_max_dist = enc_cfg->kf_min_dist;
272 } else if (arg_match(&arg, &scale_factors_arg, argi)) {
273 strncat(string_options, " scale-factors=",
274 sizeof(string_options) - strlen(string_options) - 1);
275 strncat(string_options, arg.val,
276 sizeof(string_options) - strlen(string_options) - 1);
277 } else if (arg_match(&arg, &bitrates_arg, argi)) {
278 strncat(string_options, " bitrates=",
279 sizeof(string_options) - strlen(string_options) - 1);
280 strncat(string_options, arg.val,
281 sizeof(string_options) - strlen(string_options) - 1);
282 } else if (arg_match(&arg, &min_q_arg, argi)) {
283 strncat(string_options, " min-quantizers=",
284 sizeof(string_options) - strlen(string_options) - 1);
285 strncat(string_options, arg.val,
286 sizeof(string_options) - strlen(string_options) - 1);
287 } else if (arg_match(&arg, &max_q_arg, argi)) {
288 strncat(string_options, " max-quantizers=",
289 sizeof(string_options) - strlen(string_options) - 1);
290 strncat(string_options, arg.val,
291 sizeof(string_options) - strlen(string_options) - 1);
292 } else if (arg_match(&arg, &min_bitrate_arg, argi)) {
293 min_bitrate = arg_parse_uint(&arg);
294 } else if (arg_match(&arg, &max_bitrate_arg, argi)) {
295 max_bitrate = arg_parse_uint(&arg);
296 } else if (arg_match(&arg, &lag_in_frame_arg, argi)) {
297 enc_cfg->g_lag_in_frames = arg_parse_uint(&arg);
298 } else if (arg_match(&arg, &rc_end_usage_arg, argi)) {
299 enc_cfg->rc_end_usage = arg_parse_uint(&arg);
300#if CONFIG_VP9_HIGHBITDEPTH
301 } else if (arg_match(&arg, &bitdepth_arg, argi)) {
302 enc_cfg->g_bit_depth = arg_parse_enum_or_int(&arg);
303 switch (enc_cfg->g_bit_depth) {
304 case VPX_BITS_8:
305 enc_cfg->g_input_bit_depth = 8;
306 enc_cfg->g_profile = 0;
307 break;
308 case VPX_BITS_10:
309 enc_cfg->g_input_bit_depth = 10;
310 enc_cfg->g_profile = 2;
311 break;
312 case VPX_BITS_12:
313 enc_cfg->g_input_bit_depth = 12;
314 enc_cfg->g_profile = 2;
315 break;
316 default:
317 die("Error: Invalid bit depth selected (%d)\n", enc_cfg->g_bit_depth);
318 break;
319 }
320#endif // CONFIG_VP9_HIGHBITDEPTH
321 } else if (arg_match(&arg, &dropframe_thresh_arg, argi)) {
322 enc_cfg->rc_dropframe_thresh = arg_parse_uint(&arg);
323 } else if (arg_match(&arg, &tune_content_arg, argi)) {
324 app_input->tune_content = arg_parse_uint(&arg);
325 } else if (arg_match(&arg, &inter_layer_pred_arg, argi)) {
326 app_input->inter_layer_pred = arg_parse_uint(&arg);
327 } else {
328 ++argj;
329 }
330 }
331
332 // There will be a space in front of the string options
333 if (strlen(string_options) > 0)
334 vpx_svc_set_options(svc_ctx, string_options + 1);
335
336 enc_cfg->g_pass = VPX_RC_ONE_PASS;
337
338 if (enc_cfg->rc_target_bitrate > 0) {
339 if (min_bitrate > 0) {
340 enc_cfg->rc_2pass_vbr_minsection_pct =
341 min_bitrate * 100 / enc_cfg->rc_target_bitrate;
342 }
343 if (max_bitrate > 0) {
344 enc_cfg->rc_2pass_vbr_maxsection_pct =
345 max_bitrate * 100 / enc_cfg->rc_target_bitrate;
346 }
347 }
348
349 // Check for unrecognized options
350 for (argi = argv; *argi; ++argi)
351 if (argi[0][0] == '-' && strlen(argi[0]) > 1)
352 die("Error: Unrecognized option %s\n", *argi);
353
354 if (argv[0] == NULL) {
355 usage_exit();
356 }
357 app_input->input_ctx.filename = argv[0];
358 free(argv);
359
360 open_input_file(&app_input->input_ctx);
361 if (app_input->input_ctx.file_type == FILE_TYPE_Y4M) {
362 enc_cfg->g_w = app_input->input_ctx.width;
363 enc_cfg->g_h = app_input->input_ctx.height;
364 enc_cfg->g_timebase.den = app_input->input_ctx.framerate.numerator;
365 enc_cfg->g_timebase.num = app_input->input_ctx.framerate.denominator;
366 }
367
368 if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 ||
369 enc_cfg->g_h % 2)
370 die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h);
371
372 printf(
373 "Codec %s\nframes: %d, skip: %d\n"
374 "layers: %d\n"
375 "width %d, height: %d,\n"
376 "num: %d, den: %d, bitrate: %d,\n"
377 "gop size: %d\n",
378 vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code,
379 app_input->frames_to_skip, svc_ctx->spatial_layers, enc_cfg->g_w,
380 enc_cfg->g_h, enc_cfg->g_timebase.num, enc_cfg->g_timebase.den,
381 enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist);
382}
383
384#if OUTPUT_RC_STATS
385// For rate control encoding stats.
386 struct RateControlStats {
387 // Number of input frames per layer.
388 int layer_input_frames[VPX_MAX_LAYERS];
389 // Total (cumulative) number of encoded frames per layer.
390 int layer_tot_enc_frames[VPX_MAX_LAYERS];
391 // Number of encoded non-key frames per layer.
392 int layer_enc_frames[VPX_MAX_LAYERS];
393 // Framerate per layer (cumulative).
394 double layer_framerate[VPX_MAX_LAYERS];
395 // Target average frame size per layer (per-frame-bandwidth per layer).
396 double layer_pfb[VPX_MAX_LAYERS];
397 // Actual average frame size per layer.
398 double layer_avg_frame_size[VPX_MAX_LAYERS];
399 // Average rate mismatch per layer (|target - actual| / target).
400 double layer_avg_rate_mismatch[VPX_MAX_LAYERS];
401 // Actual encoding bitrate per layer (cumulative).
402 double layer_encoding_bitrate[VPX_MAX_LAYERS];
403 // Average of the short-time encoder actual bitrate.
404 // TODO(marpan): Should we add these short-time stats for each layer?
405 double avg_st_encoding_bitrate;
406 // Variance of the short-time encoder actual bitrate.
407 double variance_st_encoding_bitrate;
408 // Window (number of frames) for computing short-time encoding bitrate.
409 int window_size;
410 // Number of window measurements.
411 int window_count;
412};
413
414// Note: these rate control stats assume only 1 key frame in the
415// sequence (i.e., first frame only).
416 static void set_rate_control_stats(struct RateControlStats *rc,
417 vpx_codec_enc_cfg_t *cfg) {
418 unsigned int sl, tl;
419 // Set the layer (cumulative) framerate and the target layer (non-cumulative)
420 // per-frame-bandwidth, for the rate control encoding stats below.
421 const double framerate = cfg->g_timebase.den / cfg->g_timebase.num;
422
423 for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
424 for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
425 const int layer = sl * cfg->ts_number_layers + tl;
426 if (cfg->ts_number_layers == 1)
427 rc->layer_framerate[layer] = framerate;
428 else
429 rc->layer_framerate[layer] = framerate / cfg->ts_rate_decimator[tl];
430 if (tl > 0) {
431 rc->layer_pfb[layer] =
432 1000.0 *
433 (cfg->layer_target_bitrate[layer] -
434 cfg->layer_target_bitrate[layer - 1]) /
435 (rc->layer_framerate[layer] - rc->layer_framerate[layer - 1]);
436 } else {
437 rc->layer_pfb[layer] = 1000.0 * cfg->layer_target_bitrate[layer] /
438 rc->layer_framerate[layer];
439 }
440 rc->layer_input_frames[layer] = 0;
441 rc->layer_enc_frames[layer] = 0;
442 rc->layer_tot_enc_frames[layer] = 0;
443 rc->layer_encoding_bitrate[layer] = 0.0;
444 rc->layer_avg_frame_size[layer] = 0.0;
445 rc->layer_avg_rate_mismatch[layer] = 0.0;
446 }
447 }
448 rc->window_count = 0;
449 rc->window_size = 15;
450 rc->avg_st_encoding_bitrate = 0.0;
451 rc->variance_st_encoding_bitrate = 0.0;
452}
453
454 static void printout_rate_control_summary(struct RateControlStats *rc,
455 vpx_codec_enc_cfg_t *cfg,
456 int frame_cnt) {
457 unsigned int sl, tl;
458 double perc_fluctuation = 0.0;
459 int tot_num_frames = 0;
460 printf("Total number of processed frames: %d\n\n", frame_cnt - 1);
461 printf("Rate control layer stats for sl%d tl%d layer(s):\n\n",
462 cfg->ss_number_layers, cfg->ts_number_layers);
463 for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
464 tot_num_frames = 0;
465 for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
466 const int layer = sl * cfg->ts_number_layers + tl;
467 const int num_dropped =
468 (tl > 0)
469 ? (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer])
470 : (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer] -
471 1);
472 tot_num_frames += rc->layer_input_frames[layer];
473 rc->layer_encoding_bitrate[layer] = 0.001 * rc->layer_framerate[layer] *
474 rc->layer_encoding_bitrate[layer] /
475 tot_num_frames;
476 rc->layer_avg_frame_size[layer] =
477 rc->layer_avg_frame_size[layer] / rc->layer_enc_frames[layer];
478 rc->layer_avg_rate_mismatch[layer] = 100.0 *
479 rc->layer_avg_rate_mismatch[layer] /
480 rc->layer_enc_frames[layer];
481 printf("For layer#: sl%d tl%d \n", sl, tl);
482 printf("Bitrate (target vs actual): %d %f.0 kbps\n",
483 cfg->layer_target_bitrate[layer],
484 rc->layer_encoding_bitrate[layer]);
485 printf("Average frame size (target vs actual): %f %f bits\n",
486 rc->layer_pfb[layer], rc->layer_avg_frame_size[layer]);
487 printf("Average rate_mismatch: %f\n", rc->layer_avg_rate_mismatch[layer]);
488 printf(
489 "Number of input frames, encoded (non-key) frames, "
490 "and percent dropped frames: %d %d %f.0 \n",
491 rc->layer_input_frames[layer], rc->layer_enc_frames[layer],
492 100.0 * num_dropped / rc->layer_input_frames[layer]);
493 printf("\n");
494 }
495 }
496 rc->avg_st_encoding_bitrate = rc->avg_st_encoding_bitrate / rc->window_count;
497 rc->variance_st_encoding_bitrate =
498 rc->variance_st_encoding_bitrate / rc->window_count -
499 (rc->avg_st_encoding_bitrate * rc->avg_st_encoding_bitrate);
500 perc_fluctuation = 100.0 * sqrt(rc->variance_st_encoding_bitrate) /
501 rc->avg_st_encoding_bitrate;
502 printf("Short-time stats, for window of %d frames: \n", rc->window_size);
503 printf("Average, rms-variance, and percent-fluct: %f %f %f \n",
504 rc->avg_st_encoding_bitrate, sqrt(rc->variance_st_encoding_bitrate),
505 perc_fluctuation);
506 printf("Num of input, num of encoded (super) frames: %d %d \n", frame_cnt,
507 tot_num_frames);
508}
509
510 static vpx_codec_err_t parse_superframe_index(const uint8_t *data,
511 size_t data_sz, uint64_t sizes[8],
512 int *count) {
513 // A chunk ending with a byte matching 0xc0 is an invalid chunk unless
514 // it is a super frame index. If the last byte of real video compression
515 // data is 0xc0 the encoder must add a 0 byte. If we have the marker but
516 // not the associated matching marker byte at the front of the index we have
517 // an invalid bitstream and need to return an error.
518
519 uint8_t marker;
520
521 marker = *(data + data_sz - 1);
522 *count = 0;
523
524 if ((marker & 0xe0) == 0xc0) {
525 const uint32_t frames = (marker & 0x7) + 1;
526 const uint32_t mag = ((marker >> 3) & 0x3) + 1;
527 const size_t index_sz = 2 + mag * frames;
528
529 // This chunk is marked as having a superframe index but doesn't have
530 // enough data for it, thus it's an invalid superframe index.
531 if (data_sz < index_sz) return VPX_CODEC_CORRUPT_FRAME;
532
533 {
534 const uint8_t marker2 = *(data + data_sz - index_sz);
535
536 // This chunk is marked as having a superframe index but doesn't have
537 // the matching marker byte at the front of the index therefore it's an
538 // invalid chunk.
539 if (marker != marker2) return VPX_CODEC_CORRUPT_FRAME;
540 }
541
542 {
543 // Found a valid superframe index.
544 uint32_t i, j;
545 const uint8_t *x = &data[data_sz - index_sz + 1];
546
547 for (i = 0; i < frames; ++i) {
548 uint32_t this_sz = 0;
549
550 for (j = 0; j < mag; ++j) this_sz |= (*x++) << (j * 8);
551 sizes[i] = this_sz;
552 }
553 *count = frames;
554 }
555 }
556 return VPX_CODEC_OK;
557}
558#endif
559
560// Example pattern for spatial layers and 2 temporal layers used in the
561// bypass/flexible mode. The pattern corresponds to the pattern
562// VP9E_TEMPORAL_LAYERING_MODE_0101 (temporal_layering_mode == 2) used in
563// non-flexible mode.
564 static void set_frame_flags_bypass_mode_ex0(
565 int tl, int num_spatial_layers, int is_key_frame,
566 vpx_svc_ref_frame_config_t *ref_frame_config) {
567 int sl;
568 for (sl = 0; sl < num_spatial_layers; ++sl)
569 ref_frame_config->update_buffer_slot[sl] = 0;
570
571 for (sl = 0; sl < num_spatial_layers; ++sl) {
572 // Set the buffer idx.
573 if (tl == 0) {
574 ref_frame_config->lst_fb_idx[sl] = sl;
575 if (sl) {
576 if (is_key_frame) {
577 ref_frame_config->lst_fb_idx[sl] = sl - 1;
578 ref_frame_config->gld_fb_idx[sl] = sl;
579 } else {
580 ref_frame_config->gld_fb_idx[sl] = sl - 1;
581 }
582 } else {
583 ref_frame_config->gld_fb_idx[sl] = 0;
584 }
585 ref_frame_config->alt_fb_idx[sl] = 0;
586 } else if (tl == 1) {
587 ref_frame_config->lst_fb_idx[sl] = sl;
588 ref_frame_config->gld_fb_idx[sl] =
589 (sl == 0) ? 0 : num_spatial_layers + sl - 1;
590 ref_frame_config->alt_fb_idx[sl] = num_spatial_layers + sl;
591 }
592 // Set the reference and update flags.
593 if (!tl) {
594 if (!sl) {
595 // Base spatial and base temporal (sl = 0, tl = 0)
596 ref_frame_config->reference_last[sl] = 1;
597 ref_frame_config->reference_golden[sl] = 0;
598 ref_frame_config->reference_alt_ref[sl] = 0;
599 ref_frame_config->update_buffer_slot[sl] |=
600 1 << ref_frame_config->lst_fb_idx[sl];
601 } else {
602 if (is_key_frame) {
603 ref_frame_config->reference_last[sl] = 1;
604 ref_frame_config->reference_golden[sl] = 0;
605 ref_frame_config->reference_alt_ref[sl] = 0;
606 ref_frame_config->update_buffer_slot[sl] |=
607 1 << ref_frame_config->gld_fb_idx[sl];
608 } else {
609 // Non-zero spatiall layer.
610 ref_frame_config->reference_last[sl] = 1;
611 ref_frame_config->reference_golden[sl] = 1;
612 ref_frame_config->reference_alt_ref[sl] = 1;
613 ref_frame_config->update_buffer_slot[sl] |=
614 1 << ref_frame_config->lst_fb_idx[sl];
615 }
616 }
617 } else if (tl == 1) {
618 if (!sl) {
619 // Base spatial and top temporal (tl = 1)
620 ref_frame_config->reference_last[sl] = 1;
621 ref_frame_config->reference_golden[sl] = 0;
622 ref_frame_config->reference_alt_ref[sl] = 0;
623 ref_frame_config->update_buffer_slot[sl] |=
624 1 << ref_frame_config->alt_fb_idx[sl];
625 } else {
626 // Non-zero spatial.
627 if (sl < num_spatial_layers - 1) {
628 ref_frame_config->reference_last[sl] = 1;
629 ref_frame_config->reference_golden[sl] = 1;
630 ref_frame_config->reference_alt_ref[sl] = 0;
631 ref_frame_config->update_buffer_slot[sl] |=
632 1 << ref_frame_config->alt_fb_idx[sl];
633 } else if (sl == num_spatial_layers - 1) {
634 // Top spatial and top temporal (non-reference -- doesn't update any
635 // reference buffers)
636 ref_frame_config->reference_last[sl] = 1;
637 ref_frame_config->reference_golden[sl] = 1;
638 ref_frame_config->reference_alt_ref[sl] = 0;
639 }
640 }
641 }
642 }
643}
644
645// Example pattern for 2 spatial layers and 2 temporal layers used in the
646// bypass/flexible mode, except only 1 spatial layer when temporal_layer_id = 1.
647 static void set_frame_flags_bypass_mode_ex1(
648 int tl, int num_spatial_layers, int is_key_frame,
649 vpx_svc_ref_frame_config_t *ref_frame_config) {
650 int sl;
651 for (sl = 0; sl < num_spatial_layers; ++sl)
652 ref_frame_config->update_buffer_slot[sl] = 0;
653
654 if (tl == 0) {
655 if (is_key_frame) {
656 ref_frame_config->lst_fb_idx[1] = 0;
657 ref_frame_config->gld_fb_idx[1] = 1;
658 } else {
659 ref_frame_config->lst_fb_idx[1] = 1;
660 ref_frame_config->gld_fb_idx[1] = 0;
661 }
662 ref_frame_config->alt_fb_idx[1] = 0;
663
664 ref_frame_config->lst_fb_idx[0] = 0;
665 ref_frame_config->gld_fb_idx[0] = 0;
666 ref_frame_config->alt_fb_idx[0] = 0;
667 }
668 if (tl == 1) {
669 ref_frame_config->lst_fb_idx[0] = 0;
670 ref_frame_config->gld_fb_idx[0] = 1;
671 ref_frame_config->alt_fb_idx[0] = 2;
672
673 ref_frame_config->lst_fb_idx[1] = 1;
674 ref_frame_config->gld_fb_idx[1] = 2;
675 ref_frame_config->alt_fb_idx[1] = 3;
676 }
677 // Set the reference and update flags.
678 if (tl == 0) {
679 // Base spatial and base temporal (sl = 0, tl = 0)
680 ref_frame_config->reference_last[0] = 1;
681 ref_frame_config->reference_golden[0] = 0;
682 ref_frame_config->reference_alt_ref[0] = 0;
683 ref_frame_config->update_buffer_slot[0] |=
684 1 << ref_frame_config->lst_fb_idx[0];
685
686 if (is_key_frame) {
687 ref_frame_config->reference_last[1] = 1;
688 ref_frame_config->reference_golden[1] = 0;
689 ref_frame_config->reference_alt_ref[1] = 0;
690 ref_frame_config->update_buffer_slot[1] |=
691 1 << ref_frame_config->gld_fb_idx[1];
692 } else {
693 // Non-zero spatiall layer.
694 ref_frame_config->reference_last[1] = 1;
695 ref_frame_config->reference_golden[1] = 1;
696 ref_frame_config->reference_alt_ref[1] = 1;
697 ref_frame_config->update_buffer_slot[1] |=
698 1 << ref_frame_config->lst_fb_idx[1];
699 }
700 }
701 if (tl == 1) {
702 // Top spatial and top temporal (non-reference -- doesn't update any
703 // reference buffers)
704 ref_frame_config->reference_last[1] = 1;
705 ref_frame_config->reference_golden[1] = 0;
706 ref_frame_config->reference_alt_ref[1] = 0;
707 }
708}
709
710#if CONFIG_VP9_DECODER && !SIMULCAST_MODE
711 static void test_decode(vpx_codec_ctx_t *encoder, vpx_codec_ctx_t *decoder,
712 const int frames_out, int *mismatch_seen) {
713 vpx_image_t enc_img, dec_img;
714 struct vp9_ref_frame ref_enc, ref_dec;
715 if (*mismatch_seen) return;
716 /* Get the internal reference frame */
717 ref_enc.idx = 0;
718 ref_dec.idx = 0;
719 vpx_codec_control(encoder, VP9_GET_REFERENCE, &ref_enc);
720 enc_img = ref_enc.img;
721 vpx_codec_control(decoder, VP9_GET_REFERENCE, &ref_dec);
722 dec_img = ref_dec.img;
723#if CONFIG_VP9_HIGHBITDEPTH
724 if ((enc_img.fmt & VPX_IMG_FMT_HIGHBITDEPTH) !=
725 (dec_img.fmt & VPX_IMG_FMT_HIGHBITDEPTH)) {
726 if (enc_img.fmt & VPX_IMG_FMT_HIGHBITDEPTH) {
727 vpx_img_alloc(&enc_img, enc_img.fmt - VPX_IMG_FMT_HIGHBITDEPTH,
728 enc_img.d_w, enc_img.d_h, 16);
729 vpx_img_truncate_16_to_8(&enc_img, &ref_enc.img);
730 }
731 if (dec_img.fmt & VPX_IMG_FMT_HIGHBITDEPTH) {
732 vpx_img_alloc(&dec_img, dec_img.fmt - VPX_IMG_FMT_HIGHBITDEPTH,
733 dec_img.d_w, dec_img.d_h, 16);
734 vpx_img_truncate_16_to_8(&dec_img, &ref_dec.img);
735 }
736 }
737#endif
738
739 if (!compare_img(&enc_img, &dec_img)) {
740 int y[4], u[4], v[4];
741#if CONFIG_VP9_HIGHBITDEPTH
742 if (enc_img.fmt & VPX_IMG_FMT_HIGHBITDEPTH) {
743 find_mismatch_high(&enc_img, &dec_img, y, u, v);
744 } else {
745 find_mismatch(&enc_img, &dec_img, y, u, v);
746 }
747#else
748 find_mismatch(&enc_img, &dec_img, y, u, v);
749#endif
750 decoder->err = 1;
751 printf(
752 "Encode/decode mismatch on frame %d at"
753 " Y[%d, %d] {%d/%d},"
754 " U[%d, %d] {%d/%d},"
755 " V[%d, %d] {%d/%d}\n",
756 frames_out, y[0], y[1], y[2], y[3], u[0], u[1], u[2], u[3], v[0], v[1],
757 v[2], v[3]);
758 *mismatch_seen = frames_out;
759 }
760
761 vpx_img_free(&enc_img);
762 vpx_img_free(&dec_img);
763}
764#endif
765
766#if OUTPUT_RC_STATS
767 static void svc_output_rc_stats(
768 vpx_codec_ctx_t *codec, vpx_codec_enc_cfg_t *enc_cfg,
769 vpx_svc_layer_id_t *layer_id, const vpx_codec_cx_pkt_t *cx_pkt,
770 struct RateControlStats *rc, VpxVideoWriter **outfile,
771 const uint32_t frame_cnt, const double framerate) {
772 int num_layers_encoded = 0;
773 unsigned int sl, tl;
774 uint64_t sizes[8];
775 uint64_t sizes_parsed[8];
776 int count = 0;
777 double sum_bitrate = 0.0;
778 double sum_bitrate2 = 0.0;
779 vp9_zero(sizes);
780 vp9_zero(sizes_parsed);
781 vpx_codec_control(codec, VP9E_GET_SVC_LAYER_ID, layer_id);
782 parse_superframe_index(cx_pkt->data.frame.buf, cx_pkt->data.frame.sz,
783 sizes_parsed, &count);
784 if (enc_cfg->ss_number_layers == 1) {
785 sizes[0] = cx_pkt->data.frame.sz;
786 } else {
787 for (sl = 0; sl < enc_cfg->ss_number_layers; ++sl) {
788 sizes[sl] = 0;
789 if (cx_pkt->data.frame.spatial_layer_encoded[sl]) {
790 sizes[sl] = sizes_parsed[num_layers_encoded];
791 num_layers_encoded++;
792 }
793 }
794 }
795 for (sl = 0; sl < enc_cfg->ss_number_layers; ++sl) {
796 unsigned int sl2;
797 uint64_t tot_size = 0;
798#if SIMULCAST_MODE
799 for (sl2 = 0; sl2 < sl; ++sl2) {
800 if (cx_pkt->data.frame.spatial_layer_encoded[sl2]) tot_size += sizes[sl2];
801 }
802 vpx_video_writer_write_frame(outfile[sl],
803 (uint8_t *)(cx_pkt->data.frame.buf) + tot_size,
804 (size_t)(sizes[sl]), cx_pkt->data.frame.pts);
805#else
806 for (sl2 = 0; sl2 <= sl; ++sl2) {
807 if (cx_pkt->data.frame.spatial_layer_encoded[sl2]) tot_size += sizes[sl2];
808 }
809 if (tot_size > 0)
810 vpx_video_writer_write_frame(outfile[sl], cx_pkt->data.frame.buf,
811 (size_t)(tot_size), cx_pkt->data.frame.pts);
812#endif // SIMULCAST_MODE
813 }
814 for (sl = 0; sl < enc_cfg->ss_number_layers; ++sl) {
815 if (cx_pkt->data.frame.spatial_layer_encoded[sl]) {
816 for (tl = layer_id->temporal_layer_id; tl < enc_cfg->ts_number_layers;
817 ++tl) {
818 const int layer = sl * enc_cfg->ts_number_layers + tl;
819 ++rc->layer_tot_enc_frames[layer];
820 rc->layer_encoding_bitrate[layer] += 8.0 * sizes[sl];
821 // Keep count of rate control stats per layer, for non-key
822 // frames.
823 if (tl == (unsigned int)layer_id->temporal_layer_id &&
824 !(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY)) {
825 rc->layer_avg_frame_size[layer] += 8.0 * sizes[sl];
826 rc->layer_avg_rate_mismatch[layer] +=
827 fabs(8.0 * sizes[sl] - rc->layer_pfb[layer]) /
828 rc->layer_pfb[layer];
829 ++rc->layer_enc_frames[layer];
830 }
831 }
832 }
833 }
834
835 // Update for short-time encoding bitrate states, for moving
836 // window of size rc->window, shifted by rc->window / 2.
837 // Ignore first window segment, due to key frame.
838 if (frame_cnt > (unsigned int)rc->window_size) {
839 for (sl = 0; sl < enc_cfg->ss_number_layers; ++sl) {
840 if (cx_pkt->data.frame.spatial_layer_encoded[sl])
841 sum_bitrate += 0.001 * 8.0 * sizes[sl] * framerate;
842 }
843 if (frame_cnt % rc->window_size == 0) {
844 rc->window_count += 1;
845 rc->avg_st_encoding_bitrate += sum_bitrate / rc->window_size;
846 rc->variance_st_encoding_bitrate +=
847 (sum_bitrate / rc->window_size) * (sum_bitrate / rc->window_size);
848 }
849 }
850
851 // Second shifted window.
852 if (frame_cnt > (unsigned int)(rc->window_size + rc->window_size / 2)) {
853 for (sl = 0; sl < enc_cfg->ss_number_layers; ++sl) {
854 sum_bitrate2 += 0.001 * 8.0 * sizes[sl] * framerate;
855 }
856
857 if (frame_cnt > (unsigned int)(2 * rc->window_size) &&
858 frame_cnt % rc->window_size == 0) {
859 rc->window_count += 1;
860 rc->avg_st_encoding_bitrate += sum_bitrate2 / rc->window_size;
861 rc->variance_st_encoding_bitrate +=
862 (sum_bitrate2 / rc->window_size) * (sum_bitrate2 / rc->window_size);
863 }
864 }
865}
866#endif
867
868 int main(int argc, const char **argv) {
869 AppInput app_input;
870 VpxVideoWriter *writer = NULL;
871 VpxVideoInfo info;
872 vpx_codec_ctx_t encoder;
873 vpx_codec_enc_cfg_t enc_cfg;
874 SvcContext svc_ctx;
875 vpx_svc_frame_drop_t svc_drop_frame;
876 uint32_t i;
877 uint32_t frame_cnt = 0;
878 vpx_image_t raw;
879 vpx_codec_err_t res;
880 int pts = 0; /* PTS starts at 0 */
881 int frame_duration = 1; /* 1 timebase tick per frame */
882 int end_of_stream = 0;
883 int frames_received = 0;
884#if OUTPUT_RC_STATS
885 VpxVideoWriter *outfile[VPX_SS_MAX_LAYERS] = { NULL };
886 struct RateControlStats rc;
887 vpx_svc_layer_id_t layer_id;
888 vpx_svc_ref_frame_config_t ref_frame_config;
889 unsigned int sl;
890 double framerate = 30.0;
891#endif
892 struct vpx_usec_timer timer;
893 int64_t cx_time = 0;
894#if CONFIG_INTERNAL_STATS
895 FILE *f = fopen("opsnr.stt", "a");
896#endif
897#if CONFIG_VP9_DECODER && !SIMULCAST_MODE
898 int mismatch_seen = 0;
899 vpx_codec_ctx_t decoder;
900#endif
901 memset(&svc_ctx, 0, sizeof(svc_ctx));
902 memset(&app_input, 0, sizeof(AppInput));
903 memset(&info, 0, sizeof(VpxVideoInfo));
904 memset(&layer_id, 0, sizeof(vpx_svc_layer_id_t));
905 memset(&rc, 0, sizeof(struct RateControlStats));
906 exec_name = argv[0];
907
908 /* Setup default input stream settings */
909 app_input.input_ctx.framerate.numerator = 30;
910 app_input.input_ctx.framerate.denominator = 1;
911 app_input.input_ctx.only_i420 = 1;
912 app_input.input_ctx.bit_depth = 0;
913
914 parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg);
915
916 // Y4M reader handles its own allocation.
917 if (app_input.input_ctx.file_type != FILE_TYPE_Y4M) {
918// Allocate image buffer
919#if CONFIG_VP9_HIGHBITDEPTH
920 if (!vpx_img_alloc(&raw,
921 enc_cfg.g_input_bit_depth == 8 ? VPX_IMG_FMT_I420
922 : VPX_IMG_FMT_I42016,
923 enc_cfg.g_w, enc_cfg.g_h, 32)) {
924 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
925 }
926#else
927 if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32)) {
928 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
929 }
930#endif // CONFIG_VP9_HIGHBITDEPTH
931 }
932
933 // Initialize codec
934 if (vpx_svc_init(&svc_ctx, &encoder, vpx_codec_vp9_cx(), &enc_cfg) !=
935 VPX_CODEC_OK)
936 die("Failed to initialize encoder\n");
937#if CONFIG_VP9_DECODER && !SIMULCAST_MODE
938 if (vpx_codec_dec_init(
939 &decoder, get_vpx_decoder_by_name("vp9")->codec_interface(), NULL, 0))
940 die("Failed to initialize decoder\n");
941#endif
942
943#if OUTPUT_RC_STATS
944 rc.window_count = 1;
945 rc.window_size = 15; // Silence a static analysis warning.
946 rc.avg_st_encoding_bitrate = 0.0;
947 rc.variance_st_encoding_bitrate = 0.0;
948 if (svc_ctx.output_rc_stat) {
949 set_rate_control_stats(&rc, &enc_cfg);
950 framerate = enc_cfg.g_timebase.den / enc_cfg.g_timebase.num;
951 }
952#endif
953
954 info.codec_fourcc = VP9_FOURCC;
955 info.frame_width = enc_cfg.g_w;
956 info.frame_height = enc_cfg.g_h;
957 info.time_base.numerator = enc_cfg.g_timebase.num;
958 info.time_base.denominator = enc_cfg.g_timebase.den;
959
960 writer =
961 vpx_video_writer_open(app_input.output_filename, kContainerIVF, &info);
962 if (!writer)
963 die("Failed to open %s for writing\n", app_input.output_filename);
964
965#if OUTPUT_RC_STATS
966 // Write out spatial layer stream.
967 // TODO(marpan/jianj): allow for writing each spatial and temporal stream.
968 if (svc_ctx.output_rc_stat) {
969 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
970 char file_name[PATH_MAX];
971
972 snprintf(file_name, sizeof(file_name), "%s_s%d.ivf",
973 app_input.output_filename, sl);
974 outfile[sl] = vpx_video_writer_open(file_name, kContainerIVF, &info);
975 if (!outfile[sl]) die("Failed to open %s for writing", file_name);
976 }
977 }
978#endif
979
980 // skip initial frames
981 for (i = 0; i < app_input.frames_to_skip; ++i)
982 read_frame(&app_input.input_ctx, &raw);
983
984 if (svc_ctx.speed != -1)
985 vpx_codec_control(&encoder, VP8E_SET_CPUUSED, svc_ctx.speed);
986 if (svc_ctx.threads) {
987 vpx_codec_control(&encoder, VP9E_SET_TILE_COLUMNS,
988 get_msb(svc_ctx.threads));
989 if (svc_ctx.threads > 1)
990 vpx_codec_control(&encoder, VP9E_SET_ROW_MT, 1);
991 else
992 vpx_codec_control(&encoder, VP9E_SET_ROW_MT, 0);
993 }
994 if (svc_ctx.speed >= 5 && svc_ctx.aqmode == 1)
995 vpx_codec_control(&encoder, VP9E_SET_AQ_MODE, 3);
996 if (svc_ctx.speed >= 5)
997 vpx_codec_control(&encoder, VP8E_SET_STATIC_THRESHOLD, 1);
998 vpx_codec_control(&encoder, VP8E_SET_MAX_INTRA_BITRATE_PCT, 900);
999
1000 vpx_codec_control(&encoder, VP9E_SET_SVC_INTER_LAYER_PRED,
1001 app_input.inter_layer_pred);
1002
1003 vpx_codec_control(&encoder, VP9E_SET_NOISE_SENSITIVITY, 0);
1004
1005 vpx_codec_control(&encoder, VP9E_SET_TUNE_CONTENT, app_input.tune_content);
1006
1007 vpx_codec_control(&encoder, VP9E_SET_DISABLE_OVERSHOOT_MAXQ_CBR, 0);
1008 vpx_codec_control(&encoder, VP9E_SET_DISABLE_LOOPFILTER, 0);
1009
1010 svc_drop_frame.framedrop_mode = FULL_SUPERFRAME_DROP;
1011 for (sl = 0; sl < (unsigned int)svc_ctx.spatial_layers; ++sl)
1012 svc_drop_frame.framedrop_thresh[sl] = enc_cfg.rc_dropframe_thresh;
1013 svc_drop_frame.max_consec_drop = INT_MAX;
1014 vpx_codec_control(&encoder, VP9E_SET_SVC_FRAME_DROP_LAYER, &svc_drop_frame);
1015
1016 // Encode frames
1017 while (!end_of_stream) {
1018 vpx_codec_iter_t iter = NULL;
1019 const vpx_codec_cx_pkt_t *cx_pkt;
1020 // Example patterns for bypass/flexible mode:
1021 // example_pattern = 0: 2 temporal layers, and spatial_layers = 1,2,3. Exact
1022 // to fixed SVC patterns. example_pattern = 1: 2 spatial and 2 temporal
1023 // layers, with SL0 only has TL0, and SL1 has both TL0 and TL1. This example
1024 // uses the extended API.
1025 int example_pattern = 0;
1026 if (frame_cnt >= app_input.frames_to_code ||
1027 !read_frame(&app_input.input_ctx, &raw)) {
1028 // We need one extra vpx_svc_encode call at end of stream to flush
1029 // encoder and get remaining data
1030 end_of_stream = 1;
1031 }
1032
1033 // For BYPASS/FLEXIBLE mode, set the frame flags (reference and updates)
1034 // and the buffer indices for each spatial layer of the current
1035 // (super)frame to be encoded. The spatial and temporal layer_id for the
1036 // current frame also needs to be set.
1037 // TODO(marpan): Should rename the "VP9E_TEMPORAL_LAYERING_MODE_BYPASS"
1038 // mode to "VP9E_LAYERING_MODE_BYPASS".
1039 if (svc_ctx.temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_BYPASS) {
1040 layer_id.spatial_layer_id = 0;
1041 // Example for 2 temporal layers.
1042 if (frame_cnt % 2 == 0) {
1043 layer_id.temporal_layer_id = 0;
1044 for (i = 0; i < VPX_SS_MAX_LAYERS; i++)
1045 layer_id.temporal_layer_id_per_spatial[i] = 0;
1046 } else {
1047 layer_id.temporal_layer_id = 1;
1048 for (i = 0; i < VPX_SS_MAX_LAYERS; i++)
1049 layer_id.temporal_layer_id_per_spatial[i] = 1;
1050 }
1051 if (example_pattern == 1) {
1052 // example_pattern 1 is hard-coded for 2 spatial and 2 temporal layers.
1053 assert(svc_ctx.spatial_layers == 2);
1054 assert(svc_ctx.temporal_layers == 2);
1055 if (frame_cnt % 2 == 0) {
1056 // Spatial layer 0 and 1 are encoded.
1057 layer_id.temporal_layer_id_per_spatial[0] = 0;
1058 layer_id.temporal_layer_id_per_spatial[1] = 0;
1059 layer_id.spatial_layer_id = 0;
1060 } else {
1061 // Only spatial layer 1 is encoded here.
1062 layer_id.temporal_layer_id_per_spatial[1] = 1;
1063 layer_id.spatial_layer_id = 1;
1064 }
1065 }
1066 vpx_codec_control(&encoder, VP9E_SET_SVC_LAYER_ID, &layer_id);
1067 // TODO(jianj): Fix the parameter passing for "is_key_frame" in
1068 // set_frame_flags_bypass_model() for case of periodic key frames.
1069 if (example_pattern == 0) {
1070 set_frame_flags_bypass_mode_ex0(layer_id.temporal_layer_id,
1071 svc_ctx.spatial_layers, frame_cnt == 0,
1072 &ref_frame_config);
1073 } else if (example_pattern == 1) {
1074 set_frame_flags_bypass_mode_ex1(layer_id.temporal_layer_id,
1075 svc_ctx.spatial_layers, frame_cnt == 0,
1076 &ref_frame_config);
1077 }
1078 ref_frame_config.duration[0] = frame_duration * 1;
1079 ref_frame_config.duration[1] = frame_duration * 1;
1080
1081 vpx_codec_control(&encoder, VP9E_SET_SVC_REF_FRAME_CONFIG,
1082 &ref_frame_config);
1083 // Keep track of input frames, to account for frame drops in rate control
1084 // stats/metrics.
1085 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
1086 ++rc.layer_input_frames[sl * enc_cfg.ts_number_layers +
1087 layer_id.temporal_layer_id];
1088 }
1089 } else {
1090 // For the fixed pattern SVC, temporal layer is given by superframe count.
1091 unsigned int tl = 0;
1092 if (enc_cfg.ts_number_layers == 2)
1093 tl = (frame_cnt % 2 != 0);
1094 else if (enc_cfg.ts_number_layers == 3) {
1095 if (frame_cnt % 2 != 0) tl = 2;
1096 if ((frame_cnt > 1) && ((frame_cnt - 2) % 4 == 0)) tl = 1;
1097 }
1098 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl)
1099 ++rc.layer_input_frames[sl * enc_cfg.ts_number_layers + tl];
1100 }
1101
1102 vpx_usec_timer_start(&timer);
1103 res = vpx_svc_encode(
1104 &svc_ctx, &encoder, (end_of_stream ? NULL : &raw), pts, frame_duration,
1105 svc_ctx.speed >= 5 ? VPX_DL_REALTIME : VPX_DL_GOOD_QUALITY);
1106 vpx_usec_timer_mark(&timer);
1107 cx_time += vpx_usec_timer_elapsed(&timer);
1108
1109 fflush(stdout);
1110 if (res != VPX_CODEC_OK) {
1111 die_codec(&encoder, "Failed to encode frame");
1112 }
1113
1114 while ((cx_pkt = vpx_codec_get_cx_data(&encoder, &iter)) != NULL) {
1115 switch (cx_pkt->kind) {
1116 case VPX_CODEC_CX_FRAME_PKT: {
1117 SvcInternal_t *const si = (SvcInternal_t *)svc_ctx.internal;
1118 if (cx_pkt->data.frame.sz > 0) {
1119 vpx_video_writer_write_frame(writer, cx_pkt->data.frame.buf,
1120 cx_pkt->data.frame.sz,
1121 cx_pkt->data.frame.pts);
1122#if OUTPUT_RC_STATS
1123 if (svc_ctx.output_rc_stat) {
1124 svc_output_rc_stats(&encoder, &enc_cfg, &layer_id, cx_pkt, &rc,
1125 outfile, frame_cnt, framerate);
1126 }
1127#endif
1128 }
1129 /*
1130 printf("SVC frame: %d, kf: %d, size: %d, pts: %d\n", frames_received,
1131 !!(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY),
1132 (int)cx_pkt->data.frame.sz, (int)cx_pkt->data.frame.pts);
1133 */
1134 if (enc_cfg.ss_number_layers == 1 && enc_cfg.ts_number_layers == 1)
1135 si->bytes_sum[0] += (int)cx_pkt->data.frame.sz;
1136 ++frames_received;
1137#if CONFIG_VP9_DECODER && !SIMULCAST_MODE
1138 if (vpx_codec_decode(&decoder, cx_pkt->data.frame.buf,
1139 (unsigned int)cx_pkt->data.frame.sz, NULL, 0))
1140 die_codec(&decoder, "Failed to decode frame.");
1141#endif
1142 break;
1143 }
1144 case VPX_CODEC_STATS_PKT: {
1145 stats_write(&app_input.rc_stats, cx_pkt->data.twopass_stats.buf,
1146 cx_pkt->data.twopass_stats.sz);
1147 break;
1148 }
1149 default: {
1150 break;
1151 }
1152 }
1153
1154#if CONFIG_VP9_DECODER && !SIMULCAST_MODE
1155 vpx_codec_control(&encoder, VP9E_GET_SVC_LAYER_ID, &layer_id);
1156 // Don't look for mismatch on top spatial and top temporal layers as they
1157 // are non reference frames.
1158 if ((enc_cfg.ss_number_layers > 1 || enc_cfg.ts_number_layers > 1) &&
1159 !(layer_id.temporal_layer_id > 0 &&
1160 layer_id.temporal_layer_id == (int)enc_cfg.ts_number_layers - 1 &&
1161 cx_pkt->data.frame
1162 .spatial_layer_encoded[enc_cfg.ss_number_layers - 1])) {
1163 test_decode(&encoder, &decoder, frame_cnt, &mismatch_seen);
1164 }
1165#endif
1166 }
1167
1168 if (!end_of_stream) {
1169 ++frame_cnt;
1170 pts += frame_duration;
1171 }
1172 }
1173
1174 printf("Processed %d frames\n", frame_cnt);
1175
1176 close_input_file(&app_input.input_ctx);
1177
1178#if OUTPUT_RC_STATS
1179 if (svc_ctx.output_rc_stat) {
1180 printout_rate_control_summary(&rc, &enc_cfg, frame_cnt);
1181 printf("\n");
1182 }
1183#endif
1184 if (vpx_codec_destroy(&encoder))
1185 die_codec(&encoder, "Failed to destroy codec");
1186 if (writer) {
1187 vpx_video_writer_close(writer);
1188 }
1189#if OUTPUT_RC_STATS
1190 if (svc_ctx.output_rc_stat) {
1191 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
1192 vpx_video_writer_close(outfile[sl]);
1193 }
1194 }
1195#endif
1196#if CONFIG_INTERNAL_STATS
1197 if (mismatch_seen) {
1198 fprintf(f, "First mismatch occurred in frame %d\n", mismatch_seen);
1199 } else {
1200 fprintf(f, "No mismatch detected in recon buffers\n");
1201 }
1202 fclose(f);
1203#endif
1204 printf("Frame cnt and encoding time/FPS stats for encoding: %d %f %f \n",
1205 frame_cnt, 1000 * (float)cx_time / (double)(frame_cnt * 1000000),
1206 1000000 * (double)frame_cnt / (double)cx_time);
1207 if (app_input.input_ctx.file_type != FILE_TYPE_Y4M) {
1208 vpx_img_free(&raw);
1209 }
1210 // display average size, psnr
1211 vpx_svc_dump_statistics(&svc_ctx);
1212 vpx_svc_release(&svc_ctx);
1213 return EXIT_SUCCESS;
1214}
vpx_codec_err_to_string
const char * vpx_codec_err_to_string(vpx_codec_err_t err)
Convert error number to printable string.
vpx_codec_destroy
vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx)
Destroy a codec instance.
vpx_codec_iter_t
const void * vpx_codec_iter_t
Iterator.
Definition vpx_codec.h:190
vpx_codec_iface_name
const char * vpx_codec_iface_name(vpx_codec_iface_t *iface)
Return the name for a given interface.
vpx_codec_control
#define vpx_codec_control(ctx, id, data)
vpx_codec_control wrapper macro
Definition vpx_codec.h:407
vpx_codec_err_t
vpx_codec_err_t
Algorithm return codes.
Definition vpx_codec.h:93
VPX_CODEC_CORRUPT_FRAME
@ VPX_CODEC_CORRUPT_FRAME
The coded data for this stream is corrupt or incomplete.
Definition vpx_codec.h:133
VPX_CODEC_OK
@ VPX_CODEC_OK
Operation completed without error.
Definition vpx_codec.h:95
VPX_BITS_8
@ VPX_BITS_8
Definition vpx_codec.h:221
VPX_BITS_12
@ VPX_BITS_12
Definition vpx_codec.h:223
VPX_BITS_10
@ VPX_BITS_10
Definition vpx_codec.h:222
vpx_codec_decode
vpx_codec_err_t vpx_codec_decode(vpx_codec_ctx_t *ctx, const uint8_t *data, unsigned int data_sz, void *user_priv, long deadline)
Decode data.
vpx_codec_dec_init
#define vpx_codec_dec_init(ctx, iface, cfg, flags)
Convenience macro for vpx_codec_dec_init_ver()
Definition vpx_decoder.h:143
VPX_DL_REALTIME
#define VPX_DL_REALTIME
deadline parameter analogous to VPx REALTIME mode.
Definition vpx_encoder.h:979
VPX_DL_GOOD_QUALITY
#define VPX_DL_GOOD_QUALITY
deadline parameter analogous to VPx GOOD QUALITY mode.
Definition vpx_encoder.h:981
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_MAX_LAYERS
#define VPX_MAX_LAYERS
Definition vpx_encoder.h:44
VPX_FRAME_IS_KEY
#define VPX_FRAME_IS_KEY
Definition vpx_encoder.h:118
VPX_SS_MAX_LAYERS
#define VPX_SS_MAX_LAYERS
Definition vpx_encoder.h:47
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.
VPX_CODEC_CX_FRAME_PKT
@ VPX_CODEC_CX_FRAME_PKT
Definition vpx_encoder.h:150
VPX_CODEC_STATS_PKT
@ VPX_CODEC_STATS_PKT
Definition vpx_encoder.h:151
VPX_RC_ONE_PASS
@ VPX_RC_ONE_PASS
Definition vpx_encoder.h:228
VPX_CQ
@ VPX_CQ
Definition vpx_encoder.h:237
vpx_codec_vp9_cx
vpx_codec_iface_t * vpx_codec_vp9_cx(void)
The interface to the VP9 encoder.
FULL_SUPERFRAME_DROP
@ FULL_SUPERFRAME_DROP
Definition vp8cx.h:932
VP9E_SET_SVC_LAYER_ID
@ VP9E_SET_SVC_LAYER_ID
Codec control function to set svc layer for spatial and temporal.
Definition vp8cx.h:470
VP8E_SET_MAX_INTRA_BITRATE_PCT
@ VP8E_SET_MAX_INTRA_BITRATE_PCT
Codec control function to set Max data rate for Intra frames.
Definition vp8cx.h:274
VP9E_SET_SVC_INTER_LAYER_PRED
@ VP9E_SET_SVC_INTER_LAYER_PRED
Codec control function to constrain the inter-layer prediction (prediction of lower spatial resolutio...
Definition vp8cx.h:624
VP9E_SET_AQ_MODE
@ VP9E_SET_AQ_MODE
Codec control function to set adaptive quantization mode.
Definition vp8cx.h:415
VP9E_SET_DISABLE_OVERSHOOT_MAXQ_CBR
@ VP9E_SET_DISABLE_OVERSHOOT_MAXQ_CBR
Codec control function to disable increase Q on overshoot in CBR.
Definition vp8cx.h:699
VP9E_SET_TUNE_CONTENT
@ VP9E_SET_TUNE_CONTENT
Codec control function to set content type.
Definition vp8cx.h:480
VP9E_SET_ROW_MT
@ VP9E_SET_ROW_MT
Codec control function to set row level multi-threading.
Definition vp8cx.h:575
VP8E_SET_CPUUSED
@ VP8E_SET_CPUUSED
Codec control function to set encoder internal speed settings.
Definition vp8cx.h:172
VP9E_SET_TILE_COLUMNS
@ VP9E_SET_TILE_COLUMNS
Codec control function to set number of tile columns.
Definition vp8cx.h:368
VP9E_SET_SVC_FRAME_DROP_LAYER
@ 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:633
VP9E_SET_SVC_REF_FRAME_CONFIG
@ VP9E_SET_SVC_REF_FRAME_CONFIG
Codec control function to set the frame flags and buffer indices for spatial layers....
Definition vp8cx.h:550
VP8E_SET_STATIC_THRESHOLD
@ VP8E_SET_STATIC_THRESHOLD
Codec control function to set the threshold for MBs treated static.
Definition vp8cx.h:205
VP9E_SET_DISABLE_LOOPFILTER
@ VP9E_SET_DISABLE_LOOPFILTER
Codec control function to disable loopfilter.
Definition vp8cx.h:708
VP9E_SET_NOISE_SENSITIVITY
@ VP9E_SET_NOISE_SENSITIVITY
Codec control function to set noise sensitivity.
Definition vp8cx.h:438
VP9E_GET_SVC_LAYER_ID
@ VP9E_GET_SVC_LAYER_ID
Codec control function to get svc layer ID.
Definition vp8cx.h:488
VP9E_TEMPORAL_LAYERING_MODE_BYPASS
@ 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:799
VP9_GET_REFERENCE
@ VP9_GET_REFERENCE
Definition vp8.h:55
vp9_ref_frame
VP9 specific reference frame data struct.
Definition vp8.h:110
vp9_ref_frame::idx
int idx
Definition vp8.h:111
vpx_codec_ctx
Codec context structure.
Definition vpx_codec.h:200
vpx_codec_ctx::err
vpx_codec_err_t err
Definition vpx_codec.h:203
vpx_codec_cx_pkt
Encoder output packet.
Definition vpx_encoder.h:162
vpx_codec_cx_pkt::flags
vpx_codec_frame_flags_t flags
Definition vpx_encoder.h:172
vpx_codec_cx_pkt::twopass_stats
vpx_fixed_buf_t twopass_stats
Definition vpx_encoder.h:185
vpx_codec_cx_pkt::kind
enum vpx_codec_cx_pkt_kind kind
Definition vpx_encoder.h:163
vpx_codec_cx_pkt::frame
struct vpx_codec_cx_pkt::@1::@2 frame
vpx_codec_cx_pkt::spatial_layer_encoded
uint8_t spatial_layer_encoded[5]
Flag to indicate if spatial layer frame in this packet is encoded or dropped. VP8 will always be set ...
Definition vpx_encoder.h:183
vpx_codec_cx_pkt::sz
size_t sz
Definition vpx_encoder.h:167
vpx_codec_cx_pkt::buf
void * buf
Definition vpx_encoder.h:166
vpx_codec_cx_pkt::pts
vpx_codec_pts_t pts
time stamp to show frame (in timebase units)
Definition vpx_encoder.h:169
vpx_codec_cx_pkt::data
union vpx_codec_cx_pkt::@1 data
vpx_codec_enc_cfg
Encoder configuration structure.
Definition vpx_encoder.h:271
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:696
vpx_codec_enc_cfg::kf_min_dist
unsigned int kf_min_dist
Keyframe minimum interval.
Definition vpx_encoder.h:608
vpx_codec_enc_cfg::ts_number_layers
unsigned int ts_number_layers
Number of temporal coding layers.
Definition vpx_encoder.h:647
vpx_codec_enc_cfg::ss_number_layers
unsigned int ss_number_layers
Number of spatial coding layers.
Definition vpx_encoder.h:627
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:573
vpx_codec_enc_cfg::g_profile
unsigned int g_profile
Bitstream profile to use.
Definition vpx_encoder.h:298
vpx_codec_enc_cfg::layer_target_bitrate
unsigned int layer_target_bitrate[12]
Target bitrate for each spatial/temporal layer.
Definition vpx_encoder.h:687
vpx_codec_enc_cfg::g_h
unsigned int g_h
Height of the frame.
Definition vpx_encoder.h:316
vpx_codec_enc_cfg::g_error_resilient
vpx_codec_er_flags_t g_error_resilient
Enable error resilient modes.
Definition vpx_encoder.h:354
vpx_codec_enc_cfg::g_w
unsigned int g_w
Width of the frame.
Definition vpx_encoder.h:307
vpx_codec_enc_cfg::rc_dropframe_thresh
unsigned int rc_dropframe_thresh
Temporal resampling configuration, if supported by the codec.
Definition vpx_encoder.h:394
vpx_codec_enc_cfg::g_timebase
struct vpx_rational g_timebase
Stream timebase units.
Definition vpx_encoder.h:346
vpx_codec_enc_cfg::g_pass
enum vpx_enc_pass g_pass
Multi-pass Encoding Mode.
Definition vpx_encoder.h:361
vpx_codec_enc_cfg::g_lag_in_frames
unsigned int g_lag_in_frames
Allow lagged encoding.
Definition vpx_encoder.h:375
vpx_codec_enc_cfg::rc_end_usage
enum vpx_rc_mode rc_end_usage
Rate control algorithm to use.
Definition vpx_encoder.h:443
vpx_codec_enc_cfg::g_bit_depth
vpx_bit_depth_t g_bit_depth
Bit-depth of the codec.
Definition vpx_encoder.h:324
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:580
vpx_codec_enc_cfg::rc_target_bitrate
unsigned int rc_target_bitrate
Target data rate.
Definition vpx_encoder.h:463
vpx_codec_enc_cfg::g_input_bit_depth
unsigned int g_input_bit_depth
Bit-depth of the input frames.
Definition vpx_encoder.h:332
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:661
vpx_codec_enc_cfg::kf_max_dist
unsigned int kf_max_dist
Keyframe maximum interval.
Definition vpx_encoder.h:617
vpx_fixed_buf::sz
size_t sz
Definition vpx_encoder.h:100
vpx_fixed_buf::buf
void * buf
Definition vpx_encoder.h:99
vpx_image
Image Descriptor.
Definition vpx_image.h:72
vpx_image::fmt
vpx_img_fmt_t fmt
Definition vpx_image.h:73
vpx_image::d_h
unsigned int d_h
Definition vpx_image.h:84
vpx_image::d_w
unsigned int d_w
Definition vpx_image.h:83
vpx_rational::den
int den
Definition vpx_encoder.h:223
vpx_rational::num
int num
Definition vpx_encoder.h:222
vpx_svc_frame_drop
vp9 svc frame dropping parameters.
Definition vp8cx.h:944
vpx_svc_frame_drop::framedrop_thresh
int framedrop_thresh[5]
Definition vp8cx.h:945
vpx_svc_frame_drop::framedrop_mode
SVC_LAYER_DROP_MODE framedrop_mode
Definition vp8cx.h:947
vpx_svc_frame_drop::max_consec_drop
int max_consec_drop
Definition vp8cx.h:948
vpx_svc_layer_id
vp9 svc layer parameters
Definition vp8cx.h:893
vpx_svc_layer_id::temporal_layer_id
int temporal_layer_id
Definition vp8cx.h:896
vpx_svc_ref_frame_config
vp9 svc frame flag parameters.
Definition vp8cx.h:908
vpx_svc_ref_frame_config::lst_fb_idx
int lst_fb_idx[5]
Definition vp8cx.h:909
vpx_svc_ref_frame_config::update_buffer_slot
int update_buffer_slot[5]
Definition vp8cx.h:912
vpx_svc_ref_frame_config::gld_fb_idx
int gld_fb_idx[5]
Definition vp8cx.h:910
vpx_svc_ref_frame_config::reference_last
int reference_last[5]
Definition vp8cx.h:917
vpx_svc_ref_frame_config::reference_golden
int reference_golden[5]
Definition vp8cx.h:918
vpx_svc_ref_frame_config::reference_alt_ref
int reference_alt_ref[5]
Definition vp8cx.h:919
vpx_svc_ref_frame_config::duration
int64_t duration[5]
Definition vp8cx.h:920
vpx_svc_ref_frame_config::alt_fb_idx
int alt_fb_idx[5]
Definition vp8cx.h:911
vp8cx.h
Provides definitions for using VP8 or VP9 encoder algorithm within the vpx Codec Interface.
vpx_encoder.h
Describes the encoder algorithm interface to applications.
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_HIGHBITDEPTH
#define VPX_IMG_FMT_HIGHBITDEPTH
Definition vpx_image.h:35
VPX_IMG_FMT_I42016
@ VPX_IMG_FMT_I42016
Definition vpx_image.h:47
VPX_IMG_FMT_I420
@ VPX_IMG_FMT_I420
Definition vpx_image.h:42
vpx_img_free
void vpx_img_free(vpx_image_t *img)
Close an image descriptor.