WebM Codec SDK: vp9_spatial_svc_encoder

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
39static const arg_def_t outputfile =
40 ARG_DEF("o", "output", 1, "Output filename");
41static const arg_def_t skip_frames_arg =
42 ARG_DEF("s", "skip-frames", 1, "input frames to skip");
43static const arg_def_t frames_arg =
44 ARG_DEF("f", "frames", 1, "number of frames to encode");
45static const arg_def_t threads_arg =
46 ARG_DEF("th", "threads", 1, "number of threads to use");
47#if OUTPUT_RC_STATS
48static const arg_def_t output_rc_stats_arg =
49 ARG_DEF("rcstat", "output_rc_stats", 1, "output rc stats");
50#endif
51static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width");
52static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height");
53static const arg_def_t timebase_arg =
54 ARG_DEF("t", "timebase", 1, "timebase (num/den)");
55static const arg_def_t bitrate_arg = ARG_DEF(
56 "b", "target-bitrate", 1, "encoding bitrate, in kilobits per second");
57static const arg_def_t spatial_layers_arg =
58 ARG_DEF("sl", "spatial-layers", 1, "number of spatial SVC layers");
59static const arg_def_t temporal_layers_arg =
60 ARG_DEF("tl", "temporal-layers", 1, "number of temporal SVC layers");
61static 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");
65static const arg_def_t kf_dist_arg =
66 ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes");
67static const arg_def_t scale_factors_arg =
68 ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)");
69static const arg_def_t min_q_arg =
70 ARG_DEF(NULL, "min-q", 1, "Minimum quantizer");
71static const arg_def_t max_q_arg =
72 ARG_DEF(NULL, "max-q", 1, "Maximum quantizer");
73static const arg_def_t min_bitrate_arg =
74 ARG_DEF(NULL, "min-bitrate", 1, "Minimum bitrate");
75static const arg_def_t max_bitrate_arg =
76 ARG_DEF(NULL, "max-bitrate", 1, "Maximum bitrate");
77static 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");
81static const arg_def_t rc_end_usage_arg =
82 ARG_DEF(NULL, "rc-end-usage", 1, "0 - 3: VBR, CBR, CQ, Q");
83static const arg_def_t speed_arg =
84 ARG_DEF("sp", "speed", 1, "speed configuration");
85static const arg_def_t aqmode_arg =
86 ARG_DEF("aq", "aqmode", 1, "aq-mode off/on");
87static const arg_def_t bitrates_arg =
88 ARG_DEF("bl", "bitrates", 1, "bitrates[sl * num_tl + tl]");
89static const arg_def_t dropframe_thresh_arg =
90 ARG_DEF(NULL, "drop-frame", 1, "Temporal resampling threshold (buf %)");
91static 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
98static const arg_def_t tune_content_arg = ARG_DEF_ENUM(
99 NULL, "tune-content", 1, "Tune content type", tune_content_enum);
100static 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
104static const struct arg_enum_list bitdepth_enum[] = {
105 { "8", VPX_BITS_8 }, { "10", VPX_BITS_10 }, { "12", VPX_BITS_12 }, { NULL, 0 }
106};
107
108static 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
112static 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
146static const uint32_t default_frames_to_skip = 0;
147static const uint32_t default_frames_to_code = 60 * 60;
148static const uint32_t default_width = 1920;
149static const uint32_t default_height = 1080;
150static const uint32_t default_timebase_num = 1;
151static const uint32_t default_timebase_den = 60;
152static const uint32_t default_bitrate = 1000;
153static const uint32_t default_spatial_layers = 5;
154static const uint32_t default_temporal_layers = 1;
155static const uint32_t default_kf_dist = 100;
156static const uint32_t default_temporal_layering_mode = 0;
157static const uint32_t default_output_rc_stats = 0;
158static const int32_t default_speed = -1; // -1 means use library default.
159static const uint32_t default_threads = 0; // zero means use library default.
160
161typedef 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
171static const char *exec_name;
172
173void 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
181static 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 for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
226 arg.argv_step = 1;
227
228 if (arg_match(&arg, &frames_arg, argi)) {
229 app_input->frames_to_code = arg_parse_uint(&arg);
230 } else if (arg_match(&arg, &outputfile, argi)) {
231 app_input->output_filename = arg.val;
232 } else if (arg_match(&arg, &width_arg, argi)) {
233 enc_cfg->g_w = arg_parse_uint(&arg);
234 } else if (arg_match(&arg, &height_arg, argi)) {
235 enc_cfg->g_h = arg_parse_uint(&arg);
236 } else if (arg_match(&arg, &timebase_arg, argi)) {
237 enc_cfg->g_timebase = arg_parse_rational(&arg);
238 } else if (arg_match(&arg, &bitrate_arg, argi)) {
239 enc_cfg->rc_target_bitrate = arg_parse_uint(&arg);
240 } else if (arg_match(&arg, &skip_frames_arg, argi)) {
241 app_input->frames_to_skip = arg_parse_uint(&arg);
242 } else if (arg_match(&arg, &spatial_layers_arg, argi)) {
243 svc_ctx->spatial_layers = arg_parse_uint(&arg);
244 } else if (arg_match(&arg, &temporal_layers_arg, argi)) {
245 svc_ctx->temporal_layers = arg_parse_uint(&arg);
246#if OUTPUT_RC_STATS
247 } else if (arg_match(&arg, &output_rc_stats_arg, argi)) {
248 svc_ctx->output_rc_stat = arg_parse_uint(&arg);
249#endif
250 } else if (arg_match(&arg, &speed_arg, argi)) {
251 svc_ctx->speed = arg_parse_uint(&arg);
252 if (svc_ctx->speed > 9) {
253 warn("Mapping speed %d to speed 9.\n", svc_ctx->speed);
254 }
255 } else if (arg_match(&arg, &aqmode_arg, argi)) {
256 svc_ctx->aqmode = arg_parse_uint(&arg);
257 } else if (arg_match(&arg, &threads_arg, argi)) {
258 svc_ctx->threads = arg_parse_uint(&arg);
259 } else if (arg_match(&arg, &temporal_layering_mode_arg, argi)) {
260 svc_ctx->temporal_layering_mode = enc_cfg->temporal_layering_mode =
261 arg_parse_int(&arg);
262 if (svc_ctx->temporal_layering_mode) {
263 enc_cfg->g_error_resilient = 1;
264 }
265 } else if (arg_match(&arg, &kf_dist_arg, argi)) {
266 enc_cfg->kf_min_dist = arg_parse_uint(&arg);
267 enc_cfg->kf_max_dist = enc_cfg->kf_min_dist;
268 } else if (arg_match(&arg, &scale_factors_arg, argi)) {
269 strncat(string_options, " scale-factors=",
270 sizeof(string_options) - strlen(string_options) - 1);
271 strncat(string_options, arg.val,
272 sizeof(string_options) - strlen(string_options) - 1);
273 } else if (arg_match(&arg, &bitrates_arg, argi)) {
274 strncat(string_options, " bitrates=",
275 sizeof(string_options) - strlen(string_options) - 1);
276 strncat(string_options, arg.val,
277 sizeof(string_options) - strlen(string_options) - 1);
278 } else if (arg_match(&arg, &min_q_arg, argi)) {
279 strncat(string_options, " min-quantizers=",
280 sizeof(string_options) - strlen(string_options) - 1);
281 strncat(string_options, arg.val,
282 sizeof(string_options) - strlen(string_options) - 1);
283 } else if (arg_match(&arg, &max_q_arg, argi)) {
284 strncat(string_options, " max-quantizers=",
285 sizeof(string_options) - strlen(string_options) - 1);
286 strncat(string_options, arg.val,
287 sizeof(string_options) - strlen(string_options) - 1);
288 } else if (arg_match(&arg, &min_bitrate_arg, argi)) {
289 min_bitrate = arg_parse_uint(&arg);
290 } else if (arg_match(&arg, &max_bitrate_arg, argi)) {
291 max_bitrate = arg_parse_uint(&arg);
292 } else if (arg_match(&arg, &lag_in_frame_arg, argi)) {
293 enc_cfg->g_lag_in_frames = arg_parse_uint(&arg);
294 } else if (arg_match(&arg, &rc_end_usage_arg, argi)) {
295 enc_cfg->rc_end_usage = arg_parse_uint(&arg);
296#if CONFIG_VP9_HIGHBITDEPTH
297 } else if (arg_match(&arg, &bitdepth_arg, argi)) {
298 enc_cfg->g_bit_depth = arg_parse_enum_or_int(&arg);
299 switch (enc_cfg->g_bit_depth) {
300 case VPX_BITS_8:
301 enc_cfg->g_input_bit_depth = 8;
302 enc_cfg->g_profile = 0;
303 break;
304 case VPX_BITS_10:
305 enc_cfg->g_input_bit_depth = 10;
306 enc_cfg->g_profile = 2;
307 break;
308 case VPX_BITS_12:
309 enc_cfg->g_input_bit_depth = 12;
310 enc_cfg->g_profile = 2;
311 break;
312 default:
313 die("Error: Invalid bit depth selected (%d)\n", enc_cfg->g_bit_depth);
314 break;
315 }
316#endif // CONFIG_VP9_HIGHBITDEPTH
317 } else if (arg_match(&arg, &dropframe_thresh_arg, argi)) {
318 enc_cfg->rc_dropframe_thresh = arg_parse_uint(&arg);
319 } else if (arg_match(&arg, &tune_content_arg, argi)) {
320 app_input->tune_content = arg_parse_uint(&arg);
321 } else if (arg_match(&arg, &inter_layer_pred_arg, argi)) {
322 app_input->inter_layer_pred = arg_parse_uint(&arg);
323 } else {
324 ++argj;
325 }
326 }
327
328 // There will be a space in front of the string options
329 if (strlen(string_options) > 0)
330 vpx_svc_set_options(svc_ctx, string_options + 1);
331
332 enc_cfg->g_pass = VPX_RC_ONE_PASS;
333
334 if (enc_cfg->rc_target_bitrate > 0) {
335 if (min_bitrate > 0) {
336 enc_cfg->rc_2pass_vbr_minsection_pct =
337 min_bitrate * 100 / enc_cfg->rc_target_bitrate;
338 }
339 if (max_bitrate > 0) {
340 enc_cfg->rc_2pass_vbr_maxsection_pct =
341 max_bitrate * 100 / enc_cfg->rc_target_bitrate;
342 }
343 }
344
345 // Check for unrecognized options
346 for (argi = argv; *argi; ++argi)
347 if (argi[0][0] == '-' && strlen(argi[0]) > 1)
348 die("Error: Unrecognized option %s\n", *argi);
349
350 if (argv[0] == NULL) {
351 usage_exit();
352 }
353 app_input->input_ctx.filename = argv[0];
354 free(argv);
355
356 open_input_file(&app_input->input_ctx);
357 if (app_input->input_ctx.file_type == FILE_TYPE_Y4M) {
358 enc_cfg->g_w = app_input->input_ctx.width;
359 enc_cfg->g_h = app_input->input_ctx.height;
360 }
361
362 if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 ||
363 enc_cfg->g_h % 2)
364 die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h);
365
366 printf(
367 "Codec %s\nframes: %d, skip: %d\n"
368 "layers: %d\n"
369 "width %d, height: %d,\n"
370 "num: %d, den: %d, bitrate: %d,\n"
371 "gop size: %d\n",
372 vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code,
373 app_input->frames_to_skip, svc_ctx->spatial_layers, enc_cfg->g_w,
374 enc_cfg->g_h, enc_cfg->g_timebase.num, enc_cfg->g_timebase.den,
375 enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist);
376}
377
378#if OUTPUT_RC_STATS
379// For rate control encoding stats.
380struct RateControlStats {
381 // Number of input frames per layer.
382 int layer_input_frames[VPX_MAX_LAYERS];
383 // Total (cumulative) number of encoded frames per layer.
384 int layer_tot_enc_frames[VPX_MAX_LAYERS];
385 // Number of encoded non-key frames per layer.
386 int layer_enc_frames[VPX_MAX_LAYERS];
387 // Framerate per layer (cumulative).
388 double layer_framerate[VPX_MAX_LAYERS];
389 // Target average frame size per layer (per-frame-bandwidth per layer).
390 double layer_pfb[VPX_MAX_LAYERS];
391 // Actual average frame size per layer.
392 double layer_avg_frame_size[VPX_MAX_LAYERS];
393 // Average rate mismatch per layer (|target - actual| / target).
394 double layer_avg_rate_mismatch[VPX_MAX_LAYERS];
395 // Actual encoding bitrate per layer (cumulative).
396 double layer_encoding_bitrate[VPX_MAX_LAYERS];
397 // Average of the short-time encoder actual bitrate.
398 // TODO(marpan): Should we add these short-time stats for each layer?
399 double avg_st_encoding_bitrate;
400 // Variance of the short-time encoder actual bitrate.
401 double variance_st_encoding_bitrate;
402 // Window (number of frames) for computing short-time encoding bitrate.
403 int window_size;
404 // Number of window measurements.
405 int window_count;
406};
407
408// Note: these rate control stats assume only 1 key frame in the
409// sequence (i.e., first frame only).
410static void set_rate_control_stats(struct RateControlStats *rc,
411 vpx_codec_enc_cfg_t *cfg) {
412 unsigned int sl, tl;
413 // Set the layer (cumulative) framerate and the target layer (non-cumulative)
414 // per-frame-bandwidth, for the rate control encoding stats below.
415 const double framerate = cfg->g_timebase.den / cfg->g_timebase.num;
416
417 for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
418 for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
419 const int layer = sl * cfg->ts_number_layers + tl;
420 if (cfg->ts_number_layers == 1)
421 rc->layer_framerate[layer] = framerate;
422 else
423 rc->layer_framerate[layer] = framerate / cfg->ts_rate_decimator[tl];
424 if (tl > 0) {
425 rc->layer_pfb[layer] =
426 1000.0 *
427 (cfg->layer_target_bitrate[layer] -
428 cfg->layer_target_bitrate[layer - 1]) /
429 (rc->layer_framerate[layer] - rc->layer_framerate[layer - 1]);
430 } else {
431 rc->layer_pfb[layer] = 1000.0 * cfg->layer_target_bitrate[layer] /
432 rc->layer_framerate[layer];
433 }
434 rc->layer_input_frames[layer] = 0;
435 rc->layer_enc_frames[layer] = 0;
436 rc->layer_tot_enc_frames[layer] = 0;
437 rc->layer_encoding_bitrate[layer] = 0.0;
438 rc->layer_avg_frame_size[layer] = 0.0;
439 rc->layer_avg_rate_mismatch[layer] = 0.0;
440 }
441 }
442 rc->window_count = 0;
443 rc->window_size = 15;
444 rc->avg_st_encoding_bitrate = 0.0;
445 rc->variance_st_encoding_bitrate = 0.0;
446}
447
448static void printout_rate_control_summary(struct RateControlStats *rc,
449 vpx_codec_enc_cfg_t *cfg,
450 int frame_cnt) {
451 unsigned int sl, tl;
452 double perc_fluctuation = 0.0;
453 int tot_num_frames = 0;
454 printf("Total number of processed frames: %d\n\n", frame_cnt - 1);
455 printf("Rate control layer stats for sl%d tl%d layer(s):\n\n",
456 cfg->ss_number_layers, cfg->ts_number_layers);
457 for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
458 tot_num_frames = 0;
459 for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
460 const int layer = sl * cfg->ts_number_layers + tl;
461 const int num_dropped =
462 (tl > 0)
463 ? (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer])
464 : (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer] -
465 1);
466 tot_num_frames += rc->layer_input_frames[layer];
467 rc->layer_encoding_bitrate[layer] = 0.001 * rc->layer_framerate[layer] *
468 rc->layer_encoding_bitrate[layer] /
469 tot_num_frames;
470 rc->layer_avg_frame_size[layer] =
471 rc->layer_avg_frame_size[layer] / rc->layer_enc_frames[layer];
472 rc->layer_avg_rate_mismatch[layer] = 100.0 *
473 rc->layer_avg_rate_mismatch[layer] /
474 rc->layer_enc_frames[layer];
475 printf("For layer#: sl%d tl%d \n", sl, tl);
476 printf("Bitrate (target vs actual): %d %f.0 kbps\n",
477 cfg->layer_target_bitrate[layer],
478 rc->layer_encoding_bitrate[layer]);
479 printf("Average frame size (target vs actual): %f %f bits\n",
480 rc->layer_pfb[layer], rc->layer_avg_frame_size[layer]);
481 printf("Average rate_mismatch: %f\n", rc->layer_avg_rate_mismatch[layer]);
482 printf(
483 "Number of input frames, encoded (non-key) frames, "
484 "and percent dropped frames: %d %d %f.0 \n",
485 rc->layer_input_frames[layer], rc->layer_enc_frames[layer],
486 100.0 * num_dropped / rc->layer_input_frames[layer]);
487 printf("\n");
488 }
489 }
490 rc->avg_st_encoding_bitrate = rc->avg_st_encoding_bitrate / rc->window_count;
491 rc->variance_st_encoding_bitrate =
492 rc->variance_st_encoding_bitrate / rc->window_count -
493 (rc->avg_st_encoding_bitrate * rc->avg_st_encoding_bitrate);
494 perc_fluctuation = 100.0 * sqrt(rc->variance_st_encoding_bitrate) /
495 rc->avg_st_encoding_bitrate;
496 printf("Short-time stats, for window of %d frames: \n", rc->window_size);
497 printf("Average, rms-variance, and percent-fluct: %f %f %f \n",
498 rc->avg_st_encoding_bitrate, sqrt(rc->variance_st_encoding_bitrate),
499 perc_fluctuation);
500 printf("Num of input, num of encoded (super) frames: %d %d \n", frame_cnt,
501 tot_num_frames);
502}
503
504static vpx_codec_err_t parse_superframe_index(const uint8_t *data,
505 size_t data_sz, uint64_t sizes[8],
506 int *count) {
507 // A chunk ending with a byte matching 0xc0 is an invalid chunk unless
508 // it is a super frame index. If the last byte of real video compression
509 // data is 0xc0 the encoder must add a 0 byte. If we have the marker but
510 // not the associated matching marker byte at the front of the index we have
511 // an invalid bitstream and need to return an error.
512
513 uint8_t marker;
514
515 marker = *(data + data_sz - 1);
516 *count = 0;
517
518 if ((marker & 0xe0) == 0xc0) {
519 const uint32_t frames = (marker & 0x7) + 1;
520 const uint32_t mag = ((marker >> 3) & 0x3) + 1;
521 const size_t index_sz = 2 + mag * frames;
522
523 // This chunk is marked as having a superframe index but doesn't have
524 // enough data for it, thus it's an invalid superframe index.
525 if (data_sz < index_sz) return VPX_CODEC_CORRUPT_FRAME;
526
527 {
528 const uint8_t marker2 = *(data + data_sz - index_sz);
529
530 // This chunk is marked as having a superframe index but doesn't have
531 // the matching marker byte at the front of the index therefore it's an
532 // invalid chunk.
533 if (marker != marker2) return VPX_CODEC_CORRUPT_FRAME;
534 }
535
536 {
537 // Found a valid superframe index.
538 uint32_t i, j;
539 const uint8_t *x = &data[data_sz - index_sz + 1];
540
541 for (i = 0; i < frames; ++i) {
542 uint32_t this_sz = 0;
543
544 for (j = 0; j < mag; ++j) this_sz |= (*x++) << (j * 8);
545 sizes[i] = this_sz;
546 }
547 *count = frames;
548 }
549 }
550 return VPX_CODEC_OK;
551}
552#endif
553
554// Example pattern for spatial layers and 2 temporal layers used in the
555// bypass/flexible mode. The pattern corresponds to the pattern
556// VP9E_TEMPORAL_LAYERING_MODE_0101 (temporal_layering_mode == 2) used in
557// non-flexible mode.
558static void set_frame_flags_bypass_mode_ex0(
559 int tl, int num_spatial_layers, int is_key_frame,
560 vpx_svc_ref_frame_config_t *ref_frame_config) {
561 int sl;
562 for (sl = 0; sl < num_spatial_layers; ++sl)
563 ref_frame_config->update_buffer_slot[sl] = 0;
564
565 for (sl = 0; sl < num_spatial_layers; ++sl) {
566 // Set the buffer idx.
567 if (tl == 0) {
568 ref_frame_config->lst_fb_idx[sl] = sl;
569 if (sl) {
570 if (is_key_frame) {
571 ref_frame_config->lst_fb_idx[sl] = sl - 1;
572 ref_frame_config->gld_fb_idx[sl] = sl;
573 } else {
574 ref_frame_config->gld_fb_idx[sl] = sl - 1;
575 }
576 } else {
577 ref_frame_config->gld_fb_idx[sl] = 0;
578 }
579 ref_frame_config->alt_fb_idx[sl] = 0;
580 } else if (tl == 1) {
581 ref_frame_config->lst_fb_idx[sl] = sl;
582 ref_frame_config->gld_fb_idx[sl] = num_spatial_layers + sl - 1;
583 ref_frame_config->alt_fb_idx[sl] = num_spatial_layers + sl;
584 }
585 // Set the reference and update flags.
586 if (!tl) {
587 if (!sl) {
588 // Base spatial and base temporal (sl = 0, tl = 0)
589 ref_frame_config->reference_last[sl] = 1;
590 ref_frame_config->reference_golden[sl] = 0;
591 ref_frame_config->reference_alt_ref[sl] = 0;
592 ref_frame_config->update_buffer_slot[sl] |=
593 1 << ref_frame_config->lst_fb_idx[sl];
594 } else {
595 if (is_key_frame) {
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->gld_fb_idx[sl];
601 } else {
602 // Non-zero spatiall layer.
603 ref_frame_config->reference_last[sl] = 1;
604 ref_frame_config->reference_golden[sl] = 1;
605 ref_frame_config->reference_alt_ref[sl] = 1;
606 ref_frame_config->update_buffer_slot[sl] |=
607 1 << ref_frame_config->lst_fb_idx[sl];
608 }
609 }
610 } else if (tl == 1) {
611 if (!sl) {
612 // Base spatial and top temporal (tl = 1)
613 ref_frame_config->reference_last[sl] = 1;
614 ref_frame_config->reference_golden[sl] = 0;
615 ref_frame_config->reference_alt_ref[sl] = 0;
616 ref_frame_config->update_buffer_slot[sl] |=
617 1 << ref_frame_config->alt_fb_idx[sl];
618 } else {
619 // Non-zero spatial.
620 if (sl < num_spatial_layers - 1) {
621 ref_frame_config->reference_last[sl] = 1;
622 ref_frame_config->reference_golden[sl] = 1;
623 ref_frame_config->reference_alt_ref[sl] = 0;
624 ref_frame_config->update_buffer_slot[sl] |=
625 1 << ref_frame_config->alt_fb_idx[sl];
626 } else if (sl == num_spatial_layers - 1) {
627 // Top spatial and top temporal (non-reference -- doesn't update any
628 // reference buffers)
629 ref_frame_config->reference_last[sl] = 1;
630 ref_frame_config->reference_golden[sl] = 1;
631 ref_frame_config->reference_alt_ref[sl] = 0;
632 }
633 }
634 }
635 }
636}
637
638// Example pattern for 2 spatial layers and 2 temporal layers used in the
639// bypass/flexible mode, except only 1 spatial layer when temporal_layer_id = 1.
640static void set_frame_flags_bypass_mode_ex1(
641 int tl, int num_spatial_layers, int is_key_frame,
642 vpx_svc_ref_frame_config_t *ref_frame_config) {
643 int sl;
644 for (sl = 0; sl < num_spatial_layers; ++sl)
645 ref_frame_config->update_buffer_slot[sl] = 0;
646
647 if (tl == 0) {
648 if (is_key_frame) {
649 ref_frame_config->lst_fb_idx[1] = 0;
650 ref_frame_config->gld_fb_idx[1] = 1;
651 } else {
652 ref_frame_config->lst_fb_idx[1] = 1;
653 ref_frame_config->gld_fb_idx[1] = 0;
654 }
655 ref_frame_config->alt_fb_idx[1] = 0;
656
657 ref_frame_config->lst_fb_idx[0] = 0;
658 ref_frame_config->gld_fb_idx[0] = 0;
659 ref_frame_config->alt_fb_idx[0] = 0;
660 }
661 if (tl == 1) {
662 ref_frame_config->lst_fb_idx[0] = 0;
663 ref_frame_config->gld_fb_idx[0] = 1;
664 ref_frame_config->alt_fb_idx[0] = 2;
665
666 ref_frame_config->lst_fb_idx[1] = 1;
667 ref_frame_config->gld_fb_idx[1] = 2;
668 ref_frame_config->alt_fb_idx[1] = 3;
669 }
670 // Set the reference and update flags.
671 if (tl == 0) {
672 // Base spatial and base temporal (sl = 0, tl = 0)
673 ref_frame_config->reference_last[0] = 1;
674 ref_frame_config->reference_golden[0] = 0;
675 ref_frame_config->reference_alt_ref[0] = 0;
676 ref_frame_config->update_buffer_slot[0] |=
677 1 << ref_frame_config->lst_fb_idx[0];
678
679 if (is_key_frame) {
680 ref_frame_config->reference_last[1] = 1;
681 ref_frame_config->reference_golden[1] = 0;
682 ref_frame_config->reference_alt_ref[1] = 0;
683 ref_frame_config->update_buffer_slot[1] |=
684 1 << ref_frame_config->gld_fb_idx[1];
685 } else {
686 // Non-zero spatiall layer.
687 ref_frame_config->reference_last[1] = 1;
688 ref_frame_config->reference_golden[1] = 1;
689 ref_frame_config->reference_alt_ref[1] = 1;
690 ref_frame_config->update_buffer_slot[1] |=
691 1 << ref_frame_config->lst_fb_idx[1];
692 }
693 }
694 if (tl == 1) {
695 // Top spatial and top temporal (non-reference -- doesn't update any
696 // reference buffers)
697 ref_frame_config->reference_last[1] = 1;
698 ref_frame_config->reference_golden[1] = 0;
699 ref_frame_config->reference_alt_ref[1] = 0;
700 }
701}
702
703#if CONFIG_VP9_DECODER && !SIMULCAST_MODE
704static void test_decode(vpx_codec_ctx_t *encoder, vpx_codec_ctx_t *decoder,
705 const int frames_out, int *mismatch_seen) {
706 vpx_image_t enc_img, dec_img;
707 struct vp9_ref_frame ref_enc, ref_dec;
708 if (*mismatch_seen) return;
709 /* Get the internal reference frame */
710 ref_enc.idx = 0;
711 ref_dec.idx = 0;
712 vpx_codec_control(encoder, VP9_GET_REFERENCE, &ref_enc);
713 enc_img = ref_enc.img;
714 vpx_codec_control(decoder, VP9_GET_REFERENCE, &ref_dec);
715 dec_img = ref_dec.img;
716#if CONFIG_VP9_HIGHBITDEPTH
717 if ((enc_img.fmt & VPX_IMG_FMT_HIGHBITDEPTH) !=
718 (dec_img.fmt & VPX_IMG_FMT_HIGHBITDEPTH)) {
719 if (enc_img.fmt & VPX_IMG_FMT_HIGHBITDEPTH) {
720 vpx_img_alloc(&enc_img, enc_img.fmt - VPX_IMG_FMT_HIGHBITDEPTH,
721 enc_img.d_w, enc_img.d_h, 16);
722 vpx_img_truncate_16_to_8(&enc_img, &ref_enc.img);
723 }
724 if (dec_img.fmt & VPX_IMG_FMT_HIGHBITDEPTH) {
725 vpx_img_alloc(&dec_img, dec_img.fmt - VPX_IMG_FMT_HIGHBITDEPTH,
726 dec_img.d_w, dec_img.d_h, 16);
727 vpx_img_truncate_16_to_8(&dec_img, &ref_dec.img);
728 }
729 }
730#endif
731
732 if (!compare_img(&enc_img, &dec_img)) {
733 int y[4], u[4], v[4];
734#if CONFIG_VP9_HIGHBITDEPTH
735 if (enc_img.fmt & VPX_IMG_FMT_HIGHBITDEPTH) {
736 find_mismatch_high(&enc_img, &dec_img, y, u, v);
737 } else {
738 find_mismatch(&enc_img, &dec_img, y, u, v);
739 }
740#else
741 find_mismatch(&enc_img, &dec_img, y, u, v);
742#endif
743 decoder->err = 1;
744 printf(
745 "Encode/decode mismatch on frame %d at"
746 " Y[%d, %d] {%d/%d},"
747 " U[%d, %d] {%d/%d},"
748 " V[%d, %d] {%d/%d}\n",
749 frames_out, y[0], y[1], y[2], y[3], u[0], u[1], u[2], u[3], v[0], v[1],
750 v[2], v[3]);
751 *mismatch_seen = frames_out;
752 }
753
754 vpx_img_free(&enc_img);
755 vpx_img_free(&dec_img);
756}
757#endif
758
759#if OUTPUT_RC_STATS
760static void svc_output_rc_stats(
761 vpx_codec_ctx_t *codec, vpx_codec_enc_cfg_t *enc_cfg,
762 vpx_svc_layer_id_t *layer_id, const vpx_codec_cx_pkt_t *cx_pkt,
763 struct RateControlStats *rc, VpxVideoWriter **outfile,
764 const uint32_t frame_cnt, const double framerate) {
765 int num_layers_encoded = 0;
766 unsigned int sl, tl;
767 uint64_t sizes[8];
768 uint64_t sizes_parsed[8];
769 int count = 0;
770 double sum_bitrate = 0.0;
771 double sum_bitrate2 = 0.0;
772 vp9_zero(sizes);
773 vp9_zero(sizes_parsed);
774 vpx_codec_control(codec, VP9E_GET_SVC_LAYER_ID, layer_id);
775 parse_superframe_index(cx_pkt->data.frame.buf, cx_pkt->data.frame.sz,
776 sizes_parsed, &count);
777 if (enc_cfg->ss_number_layers == 1) {
778 sizes[0] = cx_pkt->data.frame.sz;
779 } else {
780 for (sl = 0; sl < enc_cfg->ss_number_layers; ++sl) {
781 sizes[sl] = 0;
782 if (cx_pkt->data.frame.spatial_layer_encoded[sl]) {
783 sizes[sl] = sizes_parsed[num_layers_encoded];
784 num_layers_encoded++;
785 }
786 }
787 }
788 for (sl = 0; sl < enc_cfg->ss_number_layers; ++sl) {
789 unsigned int sl2;
790 uint64_t tot_size = 0;
791#if SIMULCAST_MODE
792 for (sl2 = 0; sl2 < sl; ++sl2) {
793 if (cx_pkt->data.frame.spatial_layer_encoded[sl2]) tot_size += sizes[sl2];
794 }
795 vpx_video_writer_write_frame(outfile[sl],
796 (uint8_t *)(cx_pkt->data.frame.buf) + tot_size,
797 (size_t)(sizes[sl]), cx_pkt->data.frame.pts);
798#else
799 for (sl2 = 0; sl2 <= sl; ++sl2) {
800 if (cx_pkt->data.frame.spatial_layer_encoded[sl2]) tot_size += sizes[sl2];
801 }
802 if (tot_size > 0)
803 vpx_video_writer_write_frame(outfile[sl], cx_pkt->data.frame.buf,
804 (size_t)(tot_size), cx_pkt->data.frame.pts);
805#endif // SIMULCAST_MODE
806 }
807 for (sl = 0; sl < enc_cfg->ss_number_layers; ++sl) {
808 if (cx_pkt->data.frame.spatial_layer_encoded[sl]) {
809 for (tl = layer_id->temporal_layer_id; tl < enc_cfg->ts_number_layers;
810 ++tl) {
811 const int layer = sl * enc_cfg->ts_number_layers + tl;
812 ++rc->layer_tot_enc_frames[layer];
813 rc->layer_encoding_bitrate[layer] += 8.0 * sizes[sl];
814 // Keep count of rate control stats per layer, for non-key
815 // frames.
816 if (tl == (unsigned int)layer_id->temporal_layer_id &&
817 !(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY)) {
818 rc->layer_avg_frame_size[layer] += 8.0 * sizes[sl];
819 rc->layer_avg_rate_mismatch[layer] +=
820 fabs(8.0 * sizes[sl] - rc->layer_pfb[layer]) /
821 rc->layer_pfb[layer];
822 ++rc->layer_enc_frames[layer];
823 }
824 }
825 }
826 }
827
828 // Update for short-time encoding bitrate states, for moving
829 // window of size rc->window, shifted by rc->window / 2.
830 // Ignore first window segment, due to key frame.
831 if (frame_cnt > (unsigned int)rc->window_size) {
832 for (sl = 0; sl < enc_cfg->ss_number_layers; ++sl) {
833 if (cx_pkt->data.frame.spatial_layer_encoded[sl])
834 sum_bitrate += 0.001 * 8.0 * sizes[sl] * framerate;
835 }
836 if (frame_cnt % rc->window_size == 0) {
837 rc->window_count += 1;
838 rc->avg_st_encoding_bitrate += sum_bitrate / rc->window_size;
839 rc->variance_st_encoding_bitrate +=
840 (sum_bitrate / rc->window_size) * (sum_bitrate / rc->window_size);
841 }
842 }
843
844 // Second shifted window.
845 if (frame_cnt > (unsigned int)(rc->window_size + rc->window_size / 2)) {
846 for (sl = 0; sl < enc_cfg->ss_number_layers; ++sl) {
847 sum_bitrate2 += 0.001 * 8.0 * sizes[sl] * framerate;
848 }
849
850 if (frame_cnt > (unsigned int)(2 * rc->window_size) &&
851 frame_cnt % rc->window_size == 0) {
852 rc->window_count += 1;
853 rc->avg_st_encoding_bitrate += sum_bitrate2 / rc->window_size;
854 rc->variance_st_encoding_bitrate +=
855 (sum_bitrate2 / rc->window_size) * (sum_bitrate2 / rc->window_size);
856 }
857 }
858}
859#endif
860
861int main(int argc, const char **argv) {
862 AppInput app_input;
863 VpxVideoWriter *writer = NULL;
864 VpxVideoInfo info;
865 vpx_codec_ctx_t encoder;
866 vpx_codec_enc_cfg_t enc_cfg;
867 SvcContext svc_ctx;
868 vpx_svc_frame_drop_t svc_drop_frame;
869 uint32_t i;
870 uint32_t frame_cnt = 0;
871 vpx_image_t raw;
872 vpx_codec_err_t res;
873 int pts = 0; /* PTS starts at 0 */
874 int frame_duration = 1; /* 1 timebase tick per frame */
875 int end_of_stream = 0;
876 int frames_received = 0;
877#if OUTPUT_RC_STATS
878 VpxVideoWriter *outfile[VPX_SS_MAX_LAYERS] = { NULL };
879 struct RateControlStats rc;
880 vpx_svc_layer_id_t layer_id;
881 vpx_svc_ref_frame_config_t ref_frame_config;
882 unsigned int sl;
883 double framerate = 30.0;
884#endif
885 struct vpx_usec_timer timer;
886 int64_t cx_time = 0;
887#if CONFIG_INTERNAL_STATS
888 FILE *f = fopen("opsnr.stt", "a");
889#endif
890#if CONFIG_VP9_DECODER && !SIMULCAST_MODE
891 int mismatch_seen = 0;
892 vpx_codec_ctx_t decoder;
893#endif
894 memset(&svc_ctx, 0, sizeof(svc_ctx));
895 memset(&app_input, 0, sizeof(AppInput));
896 memset(&info, 0, sizeof(VpxVideoInfo));
897 memset(&layer_id, 0, sizeof(vpx_svc_layer_id_t));
898 memset(&rc, 0, sizeof(struct RateControlStats));
899 exec_name = argv[0];
900
901 /* Setup default input stream settings */
902 app_input.input_ctx.framerate.numerator = 30;
903 app_input.input_ctx.framerate.denominator = 1;
904 app_input.input_ctx.only_i420 = 1;
905 app_input.input_ctx.bit_depth = 0;
906
907 parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg);
908
909 // Y4M reader handles its own allocation.
910 if (app_input.input_ctx.file_type != FILE_TYPE_Y4M) {
911// Allocate image buffer
912#if CONFIG_VP9_HIGHBITDEPTH
913 if (!vpx_img_alloc(&raw,
914 enc_cfg.g_input_bit_depth == 8 ? VPX_IMG_FMT_I420
915 : VPX_IMG_FMT_I42016,
916 enc_cfg.g_w, enc_cfg.g_h, 32)) {
917 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
918 }
919#else
920 if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32)) {
921 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
922 }
923#endif // CONFIG_VP9_HIGHBITDEPTH
924 }
925
926 // Initialize codec
927 if (vpx_svc_init(&svc_ctx, &encoder, vpx_codec_vp9_cx(), &enc_cfg) !=
928 VPX_CODEC_OK)
929 die("Failed to initialize encoder\n");
930#if CONFIG_VP9_DECODER && !SIMULCAST_MODE
931 if (vpx_codec_dec_init(
932 &decoder, get_vpx_decoder_by_name("vp9")->codec_interface(), NULL, 0))
933 die("Failed to initialize decoder\n");
934#endif
935
936#if OUTPUT_RC_STATS
937 rc.window_count = 1;
938 rc.window_size = 15; // Silence a static analysis warning.
939 rc.avg_st_encoding_bitrate = 0.0;
940 rc.variance_st_encoding_bitrate = 0.0;
941 if (svc_ctx.output_rc_stat) {
942 set_rate_control_stats(&rc, &enc_cfg);
943 framerate = enc_cfg.g_timebase.den / enc_cfg.g_timebase.num;
944 }
945#endif
946
947 info.codec_fourcc = VP9_FOURCC;
948 info.frame_width = enc_cfg.g_w;
949 info.frame_height = enc_cfg.g_h;
950 info.time_base.numerator = enc_cfg.g_timebase.num;
951 info.time_base.denominator = enc_cfg.g_timebase.den;
952
953 writer =
954 vpx_video_writer_open(app_input.output_filename, kContainerIVF, &info);
955 if (!writer)
956 die("Failed to open %s for writing\n", app_input.output_filename);
957
958#if OUTPUT_RC_STATS
959 // Write out spatial layer stream.
960 // TODO(marpan/jianj): allow for writing each spatial and temporal stream.
961 if (svc_ctx.output_rc_stat) {
962 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
963 char file_name[PATH_MAX];
964
965 snprintf(file_name, sizeof(file_name), "%s_s%d.ivf",
966 app_input.output_filename, sl);
967 outfile[sl] = vpx_video_writer_open(file_name, kContainerIVF, &info);
968 if (!outfile[sl]) die("Failed to open %s for writing", file_name);
969 }
970 }
971#endif
972
973 // skip initial frames
974 for (i = 0; i < app_input.frames_to_skip; ++i)
975 read_frame(&app_input.input_ctx, &raw);
976
977 if (svc_ctx.speed != -1)
978 vpx_codec_control(&encoder, VP8E_SET_CPUUSED, svc_ctx.speed);
979 if (svc_ctx.threads) {
980 vpx_codec_control(&encoder, VP9E_SET_TILE_COLUMNS,
981 get_msb(svc_ctx.threads));
982 if (svc_ctx.threads > 1)
983 vpx_codec_control(&encoder, VP9E_SET_ROW_MT, 1);
984 else
985 vpx_codec_control(&encoder, VP9E_SET_ROW_MT, 0);
986 }
987 if (svc_ctx.speed >= 5 && svc_ctx.aqmode == 1)
988 vpx_codec_control(&encoder, VP9E_SET_AQ_MODE, 3);
989 if (svc_ctx.speed >= 5)
990 vpx_codec_control(&encoder, VP8E_SET_STATIC_THRESHOLD, 1);
991 vpx_codec_control(&encoder, VP8E_SET_MAX_INTRA_BITRATE_PCT, 900);
992
993 vpx_codec_control(&encoder, VP9E_SET_SVC_INTER_LAYER_PRED,
994 app_input.inter_layer_pred);
995
996 vpx_codec_control(&encoder, VP9E_SET_NOISE_SENSITIVITY, 0);
997
998 vpx_codec_control(&encoder, VP9E_SET_TUNE_CONTENT, app_input.tune_content);
999
1000 vpx_codec_control(&encoder, VP9E_SET_DISABLE_OVERSHOOT_MAXQ_CBR, 0);
1001 vpx_codec_control(&encoder, VP9E_SET_DISABLE_LOOPFILTER, 0);
1002
1003 svc_drop_frame.framedrop_mode = FULL_SUPERFRAME_DROP;
1004 for (sl = 0; sl < (unsigned int)svc_ctx.spatial_layers; ++sl)
1005 svc_drop_frame.framedrop_thresh[sl] = enc_cfg.rc_dropframe_thresh;
1006 svc_drop_frame.max_consec_drop = INT_MAX;
1007 vpx_codec_control(&encoder, VP9E_SET_SVC_FRAME_DROP_LAYER, &svc_drop_frame);
1008
1009 // Encode frames
1010 while (!end_of_stream) {
1011 vpx_codec_iter_t iter = NULL;
1012 const vpx_codec_cx_pkt_t *cx_pkt;
1013 // Example patterns for bypass/flexible mode:
1014 // example_pattern = 0: 2 temporal layers, and spatial_layers = 1,2,3. Exact
1015 // to fixed SVC patterns. example_pattern = 1: 2 spatial and 2 temporal
1016 // layers, with SL0 only has TL0, and SL1 has both TL0 and TL1. This example
1017 // uses the extended API.
1018 int example_pattern = 0;
1019 if (frame_cnt >= app_input.frames_to_code ||
1020 !read_frame(&app_input.input_ctx, &raw)) {
1021 // We need one extra vpx_svc_encode call at end of stream to flush
1022 // encoder and get remaining data
1023 end_of_stream = 1;
1024 }
1025
1026 // For BYPASS/FLEXIBLE mode, set the frame flags (reference and updates)
1027 // and the buffer indices for each spatial layer of the current
1028 // (super)frame to be encoded. The spatial and temporal layer_id for the
1029 // current frame also needs to be set.
1030 // TODO(marpan): Should rename the "VP9E_TEMPORAL_LAYERING_MODE_BYPASS"
1031 // mode to "VP9E_LAYERING_MODE_BYPASS".
1032 if (svc_ctx.temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_BYPASS) {
1033 layer_id.spatial_layer_id = 0;
1034 // Example for 2 temporal layers.
1035 if (frame_cnt % 2 == 0) {
1036 layer_id.temporal_layer_id = 0;
1037 for (i = 0; i < VPX_SS_MAX_LAYERS; i++)
1038 layer_id.temporal_layer_id_per_spatial[i] = 0;
1039 } else {
1040 layer_id.temporal_layer_id = 1;
1041 for (i = 0; i < VPX_SS_MAX_LAYERS; i++)
1042 layer_id.temporal_layer_id_per_spatial[i] = 1;
1043 }
1044 if (example_pattern == 1) {
1045 // example_pattern 1 is hard-coded for 2 spatial and 2 temporal layers.
1046 assert(svc_ctx.spatial_layers == 2);
1047 assert(svc_ctx.temporal_layers == 2);
1048 if (frame_cnt % 2 == 0) {
1049 // Spatial layer 0 and 1 are encoded.
1050 layer_id.temporal_layer_id_per_spatial[0] = 0;
1051 layer_id.temporal_layer_id_per_spatial[1] = 0;
1052 layer_id.spatial_layer_id = 0;
1053 } else {
1054 // Only spatial layer 1 is encoded here.
1055 layer_id.temporal_layer_id_per_spatial[1] = 1;
1056 layer_id.spatial_layer_id = 1;
1057 }
1058 }
1059 vpx_codec_control(&encoder, VP9E_SET_SVC_LAYER_ID, &layer_id);
1060 // TODO(jianj): Fix the parameter passing for "is_key_frame" in
1061 // set_frame_flags_bypass_model() for case of periodic key frames.
1062 if (example_pattern == 0) {
1063 set_frame_flags_bypass_mode_ex0(layer_id.temporal_layer_id,
1064 svc_ctx.spatial_layers, frame_cnt == 0,
1065 &ref_frame_config);
1066 } else if (example_pattern == 1) {
1067 set_frame_flags_bypass_mode_ex1(layer_id.temporal_layer_id,
1068 svc_ctx.spatial_layers, frame_cnt == 0,
1069 &ref_frame_config);
1070 }
1071 ref_frame_config.duration[0] = frame_duration * 1;
1072 ref_frame_config.duration[1] = frame_duration * 1;
1073
1074 vpx_codec_control(&encoder, VP9E_SET_SVC_REF_FRAME_CONFIG,
1075 &ref_frame_config);
1076 // Keep track of input frames, to account for frame drops in rate control
1077 // stats/metrics.
1078 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
1079 ++rc.layer_input_frames[sl * enc_cfg.ts_number_layers +
1080 layer_id.temporal_layer_id];
1081 }
1082 } else {
1083 // For the fixed pattern SVC, temporal layer is given by superframe count.
1084 unsigned int tl = 0;
1085 if (enc_cfg.ts_number_layers == 2)
1086 tl = (frame_cnt % 2 != 0);
1087 else if (enc_cfg.ts_number_layers == 3) {
1088 if (frame_cnt % 2 != 0) tl = 2;
1089 if ((frame_cnt > 1) && ((frame_cnt - 2) % 4 == 0)) tl = 1;
1090 }
1091 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl)
1092 ++rc.layer_input_frames[sl * enc_cfg.ts_number_layers + tl];
1093 }
1094
1095 vpx_usec_timer_start(&timer);
1096 res = vpx_svc_encode(
1097 &svc_ctx, &encoder, (end_of_stream ? NULL : &raw), pts, frame_duration,
1098 svc_ctx.speed >= 5 ? VPX_DL_REALTIME : VPX_DL_GOOD_QUALITY);
1099 vpx_usec_timer_mark(&timer);
1100 cx_time += vpx_usec_timer_elapsed(&timer);
1101
1102 fflush(stdout);
1103 if (res != VPX_CODEC_OK) {
1104 die_codec(&encoder, "Failed to encode frame");
1105 }
1106
1107 while ((cx_pkt = vpx_codec_get_cx_data(&encoder, &iter)) != NULL) {
1108 switch (cx_pkt->kind) {
1109 case VPX_CODEC_CX_FRAME_PKT: {
1110 SvcInternal_t *const si = (SvcInternal_t *)svc_ctx.internal;
1111 if (cx_pkt->data.frame.sz > 0) {
1112 vpx_video_writer_write_frame(writer, cx_pkt->data.frame.buf,
1113 cx_pkt->data.frame.sz,
1114 cx_pkt->data.frame.pts);
1115#if OUTPUT_RC_STATS
1116 if (svc_ctx.output_rc_stat) {
1117 svc_output_rc_stats(&encoder, &enc_cfg, &layer_id, cx_pkt, &rc,
1118 outfile, frame_cnt, framerate);
1119 }
1120#endif
1121 }
1122 /*
1123 printf("SVC frame: %d, kf: %d, size: %d, pts: %d\n", frames_received,
1124 !!(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY),
1125 (int)cx_pkt->data.frame.sz, (int)cx_pkt->data.frame.pts);
1126 */
1127 if (enc_cfg.ss_number_layers == 1 && enc_cfg.ts_number_layers == 1)
1128 si->bytes_sum[0] += (int)cx_pkt->data.frame.sz;
1129 ++frames_received;
1130#if CONFIG_VP9_DECODER && !SIMULCAST_MODE
1131 if (vpx_codec_decode(&decoder, cx_pkt->data.frame.buf,
1132 (unsigned int)cx_pkt->data.frame.sz, NULL, 0))
1133 die_codec(&decoder, "Failed to decode frame.");
1134#endif
1135 break;
1136 }
1137 case VPX_CODEC_STATS_PKT: {
1138 stats_write(&app_input.rc_stats, cx_pkt->data.twopass_stats.buf,
1139 cx_pkt->data.twopass_stats.sz);
1140 break;
1141 }
1142 default: { break; }
1143 }
1144
1145#if CONFIG_VP9_DECODER && !SIMULCAST_MODE
1146 vpx_codec_control(&encoder, VP9E_GET_SVC_LAYER_ID, &layer_id);
1147 // Don't look for mismatch on top spatial and top temporal layers as they
1148 // are non reference frames.
1149 if ((enc_cfg.ss_number_layers > 1 || enc_cfg.ts_number_layers > 1) &&
1150 !(layer_id.temporal_layer_id > 0 &&
1151 layer_id.temporal_layer_id == (int)enc_cfg.ts_number_layers - 1 &&
1152 cx_pkt->data.frame
1153 .spatial_layer_encoded[enc_cfg.ss_number_layers - 1])) {
1154 test_decode(&encoder, &decoder, frame_cnt, &mismatch_seen);
1155 }
1156#endif
1157 }
1158
1159 if (!end_of_stream) {
1160 ++frame_cnt;
1161 pts += frame_duration;
1162 }
1163 }
1164
1165 printf("Processed %d frames\n", frame_cnt);
1166
1167 close_input_file(&app_input.input_ctx);
1168
1169#if OUTPUT_RC_STATS
1170 if (svc_ctx.output_rc_stat) {
1171 printout_rate_control_summary(&rc, &enc_cfg, frame_cnt);
1172 printf("\n");
1173 }
1174#endif
1175 if (vpx_codec_destroy(&encoder))
1176 die_codec(&encoder, "Failed to destroy codec");
1177 if (writer) {
1178 vpx_video_writer_close(writer);
1179 }
1180#if OUTPUT_RC_STATS
1181 if (svc_ctx.output_rc_stat) {
1182 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
1183 vpx_video_writer_close(outfile[sl]);
1184 }
1185 }
1186#endif
1187#if CONFIG_INTERNAL_STATS
1188 if (mismatch_seen) {
1189 fprintf(f, "First mismatch occurred in frame %d\n", mismatch_seen);
1190 } else {
1191 fprintf(f, "No mismatch detected in recon buffers\n");
1192 }
1193 fclose(f);
1194#endif
1195 printf("Frame cnt and encoding time/FPS stats for encoding: %d %f %f \n",
1196 frame_cnt, 1000 * (float)cx_time / (double)(frame_cnt * 1000000),
1197 1000000 * (double)frame_cnt / (double)cx_time);
1198 if (app_input.input_ctx.file_type != FILE_TYPE_Y4M) {
1199 vpx_img_free(&raw);
1200 }
1201 // display average size, psnr
1202 vpx_svc_dump_statistics(&svc_ctx);
1203 vpx_svc_release(&svc_ctx);
1204 return EXIT_SUCCESS;
1205}
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:978
VPX_DL_GOOD_QUALITY
#define VPX_DL_GOOD_QUALITY
deadline parameter analogous to VPx GOOD QUALITY mode.
Definition: vpx_encoder.h:980
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:149
VPX_CODEC_STATS_PKT
@ VPX_CODEC_STATS_PKT
Definition: vpx_encoder.h:150
VPX_RC_ONE_PASS
@ VPX_RC_ONE_PASS
Definition: vpx_encoder.h:227
VPX_CQ
@ VPX_CQ
Definition: vpx_encoder.h:236
FULL_SUPERFRAME_DROP
@ FULL_SUPERFRAME_DROP
Definition: vp8cx.h:907
VP9E_SET_SVC_LAYER_ID
@ VP9E_SET_SVC_LAYER_ID
Codec control function to set svc layer for spatial and temporal.
Definition: vp8cx.h:454
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:258
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:620
VP9E_SET_AQ_MODE
@ VP9E_SET_AQ_MODE
Codec control function to set adaptive quantization mode.
Definition: vp8cx.h:399
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:695
VP9E_SET_TUNE_CONTENT
@ VP9E_SET_TUNE_CONTENT
Codec control function to set content type.
Definition: vp8cx.h:464
VP9E_SET_ROW_MT
@ VP9E_SET_ROW_MT
Codec control function to set row level multi-threading.
Definition: vp8cx.h:571
VP8E_SET_CPUUSED
@ VP8E_SET_CPUUSED
Codec control function to set encoder internal speed settings.
Definition: vp8cx.h:156
VP9E_SET_TILE_COLUMNS
@ VP9E_SET_TILE_COLUMNS
Codec control function to set number of tile columns.
Definition: vp8cx.h:352
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:629
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:546
VP8E_SET_STATIC_THRESHOLD
@ VP8E_SET_STATIC_THRESHOLD
Codec control function to set the threshold for MBs treated static.
Definition: vp8cx.h:189
VP9E_SET_DISABLE_LOOPFILTER
@ VP9E_SET_DISABLE_LOOPFILTER
Codec control function to disable loopfilter.
Definition: vp8cx.h:704
VP9E_SET_NOISE_SENSITIVITY
@ VP9E_SET_NOISE_SENSITIVITY
Codec control function to set noise sensitivity.
Definition: vp8cx.h:422
VP9E_GET_SVC_LAYER_ID
@ VP9E_GET_SVC_LAYER_ID
Codec control function to get svc layer ID.
Definition: vp8cx.h:472
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:774
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:161
vpx_codec_cx_pkt::flags
vpx_codec_frame_flags_t flags
Definition: vpx_encoder.h:171
vpx_codec_cx_pkt::twopass_stats
vpx_fixed_buf_t twopass_stats
Definition: vpx_encoder.h:184
vpx_codec_cx_pkt::kind
enum vpx_codec_cx_pkt_kind kind
Definition: vpx_encoder.h:162
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:182
vpx_codec_cx_pkt::sz
size_t sz
Definition: vpx_encoder.h:166
vpx_codec_cx_pkt::buf
void * buf
Definition: vpx_encoder.h:165
vpx_codec_cx_pkt::pts
vpx_codec_pts_t pts
time stamp to show frame (in timebase units)
Definition: vpx_encoder.h:168
vpx_codec_cx_pkt::data
union vpx_codec_cx_pkt::@1 data
vpx_codec_enc_cfg
Encoder configuration structure.
Definition: vpx_encoder.h:270
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:695
vpx_codec_enc_cfg::kf_min_dist
unsigned int kf_min_dist
Keyframe minimum interval.
Definition: vpx_encoder.h:607
vpx_codec_enc_cfg::ts_number_layers
unsigned int ts_number_layers
Number of temporal coding layers.
Definition: vpx_encoder.h:646
vpx_codec_enc_cfg::ss_number_layers
unsigned int ss_number_layers
Number of spatial coding layers.
Definition: vpx_encoder.h:626
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:572
vpx_codec_enc_cfg::g_profile
unsigned int g_profile
Bitstream profile to use.
Definition: vpx_encoder.h:297
vpx_codec_enc_cfg::layer_target_bitrate
unsigned int layer_target_bitrate[12]
Target bitrate for each spatial/temporal layer.
Definition: vpx_encoder.h:686
vpx_codec_enc_cfg::g_h
unsigned int g_h
Height of the frame.
Definition: vpx_encoder.h:315
vpx_codec_enc_cfg::g_error_resilient
vpx_codec_er_flags_t g_error_resilient
Enable error resilient modes.
Definition: vpx_encoder.h:353
vpx_codec_enc_cfg::g_w
unsigned int g_w
Width of the frame.
Definition: vpx_encoder.h:306
vpx_codec_enc_cfg::rc_dropframe_thresh
unsigned int rc_dropframe_thresh
Temporal resampling configuration, if supported by the codec.
Definition: vpx_encoder.h:393
vpx_codec_enc_cfg::g_timebase
struct vpx_rational g_timebase
Stream timebase units.
Definition: vpx_encoder.h:345
vpx_codec_enc_cfg::g_pass
enum vpx_enc_pass g_pass
Multi-pass Encoding Mode.
Definition: vpx_encoder.h:360
vpx_codec_enc_cfg::g_lag_in_frames
unsigned int g_lag_in_frames
Allow lagged encoding.
Definition: vpx_encoder.h:374
vpx_codec_enc_cfg::rc_end_usage
enum vpx_rc_mode rc_end_usage
Rate control algorithm to use.
Definition: vpx_encoder.h:442
vpx_codec_enc_cfg::g_bit_depth
vpx_bit_depth_t g_bit_depth
Bit-depth of the codec.
Definition: vpx_encoder.h:323
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:579
vpx_codec_enc_cfg::rc_target_bitrate
unsigned int rc_target_bitrate
Target data rate.
Definition: vpx_encoder.h:462
vpx_codec_enc_cfg::g_input_bit_depth
unsigned int g_input_bit_depth
Bit-depth of the input frames.
Definition: vpx_encoder.h:331
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:660
vpx_codec_enc_cfg::kf_max_dist
unsigned int kf_max_dist
Keyframe maximum interval.
Definition: vpx_encoder.h:616
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:222
vpx_rational::num
int num
Definition: vpx_encoder.h:221
vpx_svc_frame_drop
vp9 svc frame dropping parameters.
Definition: vp8cx.h:919
vpx_svc_frame_drop::framedrop_thresh
int framedrop_thresh[5]
Definition: vp8cx.h:920
vpx_svc_frame_drop::framedrop_mode
SVC_LAYER_DROP_MODE framedrop_mode
Definition: vp8cx.h:922
vpx_svc_frame_drop::max_consec_drop
int max_consec_drop
Definition: vp8cx.h:923
vpx_svc_layer_id
vp9 svc layer parameters
Definition: vp8cx.h:868
vpx_svc_layer_id::temporal_layer_id
int temporal_layer_id
Definition: vp8cx.h:871
vpx_svc_ref_frame_config
vp9 svc frame flag parameters.
Definition: vp8cx.h:883
vpx_svc_ref_frame_config::lst_fb_idx
int lst_fb_idx[5]
Definition: vp8cx.h:884
vpx_svc_ref_frame_config::update_buffer_slot
int update_buffer_slot[5]
Definition: vp8cx.h:887
vpx_svc_ref_frame_config::gld_fb_idx
int gld_fb_idx[5]
Definition: vp8cx.h:885
vpx_svc_ref_frame_config::reference_last
int reference_last[5]
Definition: vp8cx.h:892
vpx_svc_ref_frame_config::reference_golden
int reference_golden[5]
Definition: vp8cx.h:893
vpx_svc_ref_frame_config::reference_alt_ref
int reference_alt_ref[5]
Definition: vp8cx.h:894
vpx_svc_ref_frame_config::duration
int64_t duration[5]
Definition: vp8cx.h:895
vpx_svc_ref_frame_config::alt_fb_idx
int alt_fb_idx[5]
Definition: vp8cx.h:886
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.