WebM Codec SDK: vp9_spatial_svc_encoder

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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
24 #include "../args.h"
25 #include "../tools_common.h"
26 #include "../video_writer.h"
27
28 #include "../vpx_ports/vpx_timer.h"
29 #include "vpx/svc_context.h"
30 #include "vpx/vp8cx.h"
31 #include "vpx/vpx_encoder.h"
32 #include "../vpxstats.h"
33 #define OUTPUT_RC_STATS 1
34
35 static const arg_def_t skip_frames_arg =
36 ARG_DEF("s", "skip-frames", 1, "input frames to skip");
37 static const arg_def_t frames_arg =
38 ARG_DEF("f", "frames", 1, "number of frames to encode");
39 static const arg_def_t threads_arg =
40 ARG_DEF("th", "threads", 1, "number of threads to use");
41 #if OUTPUT_RC_STATS
42 static const arg_def_t output_rc_stats_arg =
43 ARG_DEF("rcstat", "output_rc_stats", 1, "output rc stats");
44 #endif
45 static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width");
46 static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height");
47 static const arg_def_t timebase_arg =
48 ARG_DEF("t", "timebase", 1, "timebase (num/den)");
49 static const arg_def_t bitrate_arg = ARG_DEF(
50 "b", "target-bitrate", 1, "encoding bitrate, in kilobits per second");
51 static const arg_def_t spatial_layers_arg =
52 ARG_DEF("sl", "spatial-layers", 1, "number of spatial SVC layers");
53 static const arg_def_t temporal_layers_arg =
54 ARG_DEF("tl", "temporal-layers", 1, "number of temporal SVC layers");
55 static const arg_def_t temporal_layering_mode_arg =
56 ARG_DEF("tlm", "temporal-layering-mode", 1, "temporal layering scheme."
57 "VP9E_TEMPORAL_LAYERING_MODE");
58 static const arg_def_t kf_dist_arg =
59 ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes");
60 static const arg_def_t scale_factors_arg =
61 ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)");
62 static const arg_def_t passes_arg =
63 ARG_DEF("p", "passes", 1, "Number of passes (1/2)");
64 static const arg_def_t pass_arg =
65 ARG_DEF(NULL, "pass", 1, "Pass to execute (1/2)");
66 static const arg_def_t fpf_name_arg =
67 ARG_DEF(NULL, "fpf", 1, "First pass statistics file name");
68 static const arg_def_t min_q_arg =
69 ARG_DEF(NULL, "min-q", 1, "Minimum quantizer");
70 static const arg_def_t max_q_arg =
71 ARG_DEF(NULL, "max-q", 1, "Maximum quantizer");
72 static const arg_def_t min_bitrate_arg =
73 ARG_DEF(NULL, "min-bitrate", 1, "Minimum bitrate");
74 static const arg_def_t max_bitrate_arg =
75 ARG_DEF(NULL, "max-bitrate", 1, "Maximum bitrate");
76 static const arg_def_t lag_in_frame_arg =
77 ARG_DEF(NULL, "lag-in-frames", 1, "Number of frame to input before "
78 "generating any outputs");
79 static const arg_def_t rc_end_usage_arg =
80 ARG_DEF(NULL, "rc-end-usage", 1, "0 - 3: VBR, CBR, CQ, Q");
81 static const arg_def_t speed_arg =
82 ARG_DEF("sp", "speed", 1, "speed configuration");
83 static const arg_def_t aqmode_arg =
84 ARG_DEF("aq", "aqmode", 1, "aq-mode off/on");
85
86 #if CONFIG_VP9_HIGHBITDEPTH
87 static const struct arg_enum_list bitdepth_enum[] = {
88 {"8", VPX_BITS_8},
89 {"10", VPX_BITS_10},
90 {"12", VPX_BITS_12},
91 {NULL, 0}
92 };
93
94 static const arg_def_t bitdepth_arg =
95 ARG_DEF_ENUM("d", "bit-depth", 1, "Bit depth for codec 8, 10 or 12. ",
96 bitdepth_enum);
97 #endif // CONFIG_VP9_HIGHBITDEPTH
98
99
100 static const arg_def_t *svc_args[] = {
101 &frames_arg, &width_arg, &height_arg,
102 &timebase_arg, &bitrate_arg, &skip_frames_arg, &spatial_layers_arg,
103 &kf_dist_arg, &scale_factors_arg, &passes_arg, &pass_arg,
104 &fpf_name_arg, &min_q_arg, &max_q_arg, &min_bitrate_arg,
105 &max_bitrate_arg, &temporal_layers_arg, &temporal_layering_mode_arg,
106 &lag_in_frame_arg, &threads_arg, &aqmode_arg,
107 #if OUTPUT_RC_STATS
108 &output_rc_stats_arg,
109 #endif
110
111 #if CONFIG_VP9_HIGHBITDEPTH
112 &bitdepth_arg,
113 #endif
114 &speed_arg,
115 &rc_end_usage_arg, NULL
116 };
117
118 static const uint32_t default_frames_to_skip = 0;
119 static const uint32_t default_frames_to_code = 60 * 60;
120 static const uint32_t default_width = 1920;
121 static const uint32_t default_height = 1080;
122 static const uint32_t default_timebase_num = 1;
123 static const uint32_t default_timebase_den = 60;
124 static const uint32_t default_bitrate = 1000;
125 static const uint32_t default_spatial_layers = 5;
126 static const uint32_t default_temporal_layers = 1;
127 static const uint32_t default_kf_dist = 100;
128 static const uint32_t default_temporal_layering_mode = 0;
129 static const uint32_t default_output_rc_stats = 0;
130 static const int32_t default_speed = -1; // -1 means use library default.
131 static const uint32_t default_threads = 0; // zero means use library default.
132
133 typedef struct {
134 const char *input_filename;
135 const char *output_filename;
136 uint32_t frames_to_code;
137 uint32_t frames_to_skip;
138 struct VpxInputContext input_ctx;
139 stats_io_t rc_stats;
140 int passes;
141 int pass;
142 } AppInput;
143
144 static const char *exec_name;
145
146 void usage_exit(void) {
147 fprintf(stderr, "Usage: %s <options> input_filename output_filename\n",
148 exec_name);
149 fprintf(stderr, "Options:\n");
150 arg_show_usage(stderr, svc_args);
151 exit(EXIT_FAILURE);
152 }
153
154 static void parse_command_line(int argc, const char **argv_,
155 AppInput *app_input, SvcContext *svc_ctx,
156 vpx_codec_enc_cfg_t *enc_cfg) {
157 struct arg arg = {0};
158 char **argv = NULL;
159 char **argi = NULL;
160 char **argj = NULL;
161 vpx_codec_err_t res;
162 int passes = 0;
163 int pass = 0;
164 const char *fpf_file_name = NULL;
165 unsigned int min_bitrate = 0;
166 unsigned int max_bitrate = 0;
167 char string_options[1024] = {0};
168
169 // initialize SvcContext with parameters that will be passed to vpx_svc_init
170 svc_ctx->log_level = SVC_LOG_DEBUG;
171 svc_ctx->spatial_layers = default_spatial_layers;
172 svc_ctx->temporal_layers = default_temporal_layers;
173 svc_ctx->temporal_layering_mode = default_temporal_layering_mode;
174 #if OUTPUT_RC_STATS
175 svc_ctx->output_rc_stat = default_output_rc_stats;
176 #endif
177 svc_ctx->speed = default_speed;
178 svc_ctx->threads = default_threads;
179
180 // start with default encoder configuration
181 res = vpx_codec_enc_config_default(vpx_codec_vp9_cx(), enc_cfg, 0);
182 if (res) {
183 die("Failed to get config: %s\n", vpx_codec_err_to_string(res));
184 }
185 // update enc_cfg with app default values
186 enc_cfg->g_w = default_width;
187 enc_cfg->g_h = default_height;
188 enc_cfg->g_timebase.num = default_timebase_num;
189 enc_cfg->g_timebase.den = default_timebase_den;
190 enc_cfg->rc_target_bitrate = default_bitrate;
191 enc_cfg->kf_min_dist = default_kf_dist;
192 enc_cfg->kf_max_dist = default_kf_dist;
193 enc_cfg->rc_end_usage = VPX_CQ;
194
195 // initialize AppInput with default values
196 app_input->frames_to_code = default_frames_to_code;
197 app_input->frames_to_skip = default_frames_to_skip;
198
199 // process command line options
200 argv = argv_dup(argc - 1, argv_ + 1);
201 for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
202 arg.argv_step = 1;
203
204 if (arg_match(&arg, &frames_arg, argi)) {
205 app_input->frames_to_code = arg_parse_uint(&arg);
206 } else if (arg_match(&arg, &width_arg, argi)) {
207 enc_cfg->g_w = arg_parse_uint(&arg);
208 } else if (arg_match(&arg, &height_arg, argi)) {
209 enc_cfg->g_h = arg_parse_uint(&arg);
210 } else if (arg_match(&arg, &timebase_arg, argi)) {
211 enc_cfg->g_timebase = arg_parse_rational(&arg);
212 } else if (arg_match(&arg, &bitrate_arg, argi)) {
213 enc_cfg->rc_target_bitrate = arg_parse_uint(&arg);
214 } else if (arg_match(&arg, &skip_frames_arg, argi)) {
215 app_input->frames_to_skip = arg_parse_uint(&arg);
216 } else if (arg_match(&arg, &spatial_layers_arg, argi)) {
217 svc_ctx->spatial_layers = arg_parse_uint(&arg);
218 } else if (arg_match(&arg, &temporal_layers_arg, argi)) {
219 svc_ctx->temporal_layers = arg_parse_uint(&arg);
220 #if OUTPUT_RC_STATS
221 } else if (arg_match(&arg, &output_rc_stats_arg, argi)) {
222 svc_ctx->output_rc_stat = arg_parse_uint(&arg);
223 #endif
224 } else if (arg_match(&arg, &speed_arg, argi)) {
225 svc_ctx->speed = arg_parse_uint(&arg);
226 } else if (arg_match(&arg, &aqmode_arg, argi)) {
227 svc_ctx->aqmode = arg_parse_uint(&arg);
228 } else if (arg_match(&arg, &threads_arg, argi)) {
229 svc_ctx->threads = arg_parse_uint(&arg);
230 } else if (arg_match(&arg, &temporal_layering_mode_arg, argi)) {
231 svc_ctx->temporal_layering_mode =
232 enc_cfg->temporal_layering_mode = arg_parse_int(&arg);
233 if (svc_ctx->temporal_layering_mode) {
234 enc_cfg->g_error_resilient = 1;
235 }
236 } else if (arg_match(&arg, &kf_dist_arg, argi)) {
237 enc_cfg->kf_min_dist = arg_parse_uint(&arg);
238 enc_cfg->kf_max_dist = enc_cfg->kf_min_dist;
239 } else if (arg_match(&arg, &scale_factors_arg, argi)) {
240 snprintf(string_options, sizeof(string_options), "%s scale-factors=%s",
241 string_options, arg.val);
242 } else if (arg_match(&arg, &passes_arg, argi)) {
243 passes = arg_parse_uint(&arg);
244 if (passes < 1 || passes > 2) {
245 die("Error: Invalid number of passes (%d)\n", passes);
246 }
247 } else if (arg_match(&arg, &pass_arg, argi)) {
248 pass = arg_parse_uint(&arg);
249 if (pass < 1 || pass > 2) {
250 die("Error: Invalid pass selected (%d)\n", pass);
251 }
252 } else if (arg_match(&arg, &fpf_name_arg, argi)) {
253 fpf_file_name = arg.val;
254 } else if (arg_match(&arg, &min_q_arg, argi)) {
255 snprintf(string_options, sizeof(string_options), "%s min-quantizers=%s",
256 string_options, arg.val);
257 } else if (arg_match(&arg, &max_q_arg, argi)) {
258 snprintf(string_options, sizeof(string_options), "%s max-quantizers=%s",
259 string_options, arg.val);
260 } else if (arg_match(&arg, &min_bitrate_arg, argi)) {
261 min_bitrate = arg_parse_uint(&arg);
262 } else if (arg_match(&arg, &max_bitrate_arg, argi)) {
263 max_bitrate = arg_parse_uint(&arg);
264 } else if (arg_match(&arg, &lag_in_frame_arg, argi)) {
265 enc_cfg->g_lag_in_frames = arg_parse_uint(&arg);
266 } else if (arg_match(&arg, &rc_end_usage_arg, argi)) {
267 enc_cfg->rc_end_usage = arg_parse_uint(&arg);
268 #if CONFIG_VP9_HIGHBITDEPTH
269 } else if (arg_match(&arg, &bitdepth_arg, argi)) {
270 enc_cfg->g_bit_depth = arg_parse_enum_or_int(&arg);
271 switch (enc_cfg->g_bit_depth) {
272 case VPX_BITS_8:
273 enc_cfg->g_input_bit_depth = 8;
274 enc_cfg->g_profile = 0;
275 break;
276 case VPX_BITS_10:
277 enc_cfg->g_input_bit_depth = 10;
278 enc_cfg->g_profile = 2;
279 break;
280 case VPX_BITS_12:
281 enc_cfg->g_input_bit_depth = 12;
282 enc_cfg->g_profile = 2;
283 break;
284 default:
285 die("Error: Invalid bit depth selected (%d)\n", enc_cfg->g_bit_depth);
286 break;
287 }
288 #endif // CONFIG_VP9_HIGHBITDEPTH
289 } else {
290 ++argj;
291 }
292 }
293
294 // There will be a space in front of the string options
295 if (strlen(string_options) > 0)
296 vpx_svc_set_options(svc_ctx, string_options + 1);
297
298 if (passes == 0 || passes == 1) {
299 if (pass) {
300 fprintf(stderr, "pass is ignored since there's only one pass\n");
301 }
302 enc_cfg->g_pass = VPX_RC_ONE_PASS;
303 } else {
304 if (pass == 0) {
305 die("pass must be specified when passes is 2\n");
306 }
307
308 if (fpf_file_name == NULL) {
309 die("fpf must be specified when passes is 2\n");
310 }
311
312 if (pass == 1) {
313 enc_cfg->g_pass = VPX_RC_FIRST_PASS;
314 if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 0)) {
315 fatal("Failed to open statistics store");
316 }
317 } else {
318 enc_cfg->g_pass = VPX_RC_LAST_PASS;
319 if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 1)) {
320 fatal("Failed to open statistics store");
321 }
322 enc_cfg->rc_twopass_stats_in = stats_get(&app_input->rc_stats);
323 }
324 app_input->passes = passes;
325 app_input->pass = pass;
326 }
327
328 if (enc_cfg->rc_target_bitrate > 0) {
329 if (min_bitrate > 0) {
330 enc_cfg->rc_2pass_vbr_minsection_pct =
331 min_bitrate * 100 / enc_cfg->rc_target_bitrate;
332 }
333 if (max_bitrate > 0) {
334 enc_cfg->rc_2pass_vbr_maxsection_pct =
335 max_bitrate * 100 / enc_cfg->rc_target_bitrate;
336 }
337 }
338
339 // Check for unrecognized options
340 for (argi = argv; *argi; ++argi)
341 if (argi[0][0] == '-' && strlen(argi[0]) > 1)
342 die("Error: Unrecognized option %s\n", *argi);
343
344 if (argv[0] == NULL || argv[1] == 0) {
345 usage_exit();
346 }
347 app_input->input_filename = argv[0];
348 app_input->output_filename = argv[1];
349 free(argv);
350
351 if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 ||
352 enc_cfg->g_h % 2)
353 die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h);
354
355 printf(
356 "Codec %s\nframes: %d, skip: %d\n"
357 "layers: %d\n"
358 "width %d, height: %d,\n"
359 "num: %d, den: %d, bitrate: %d,\n"
360 "gop size: %d\n",
361 vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code,
362 app_input->frames_to_skip,
363 svc_ctx->spatial_layers, enc_cfg->g_w, enc_cfg->g_h,
364 enc_cfg->g_timebase.num, enc_cfg->g_timebase.den,
365 enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist);
366 }
367
368 #if OUTPUT_RC_STATS
369 // For rate control encoding stats.
370 struct RateControlStats {
371 // Number of input frames per layer.
372 int layer_input_frames[VPX_MAX_LAYERS];
373 // Total (cumulative) number of encoded frames per layer.
374 int layer_tot_enc_frames[VPX_MAX_LAYERS];
375 // Number of encoded non-key frames per layer.
376 int layer_enc_frames[VPX_MAX_LAYERS];
377 // Framerate per layer (cumulative).
378 double layer_framerate[VPX_MAX_LAYERS];
379 // Target average frame size per layer (per-frame-bandwidth per layer).
380 double layer_pfb[VPX_MAX_LAYERS];
381 // Actual average frame size per layer.
382 double layer_avg_frame_size[VPX_MAX_LAYERS];
383 // Average rate mismatch per layer (|target - actual| / target).
384 double layer_avg_rate_mismatch[VPX_MAX_LAYERS];
385 // Actual encoding bitrate per layer (cumulative).
386 double layer_encoding_bitrate[VPX_MAX_LAYERS];
387 // Average of the short-time encoder actual bitrate.
388 // TODO(marpan): Should we add these short-time stats for each layer?
389 double avg_st_encoding_bitrate;
390 // Variance of the short-time encoder actual bitrate.
391 double variance_st_encoding_bitrate;
392 // Window (number of frames) for computing short-time encoding bitrate.
393 int window_size;
394 // Number of window measurements.
395 int window_count;
396 };
397
398 // Note: these rate control stats assume only 1 key frame in the
399 // sequence (i.e., first frame only).
400 static void set_rate_control_stats(struct RateControlStats *rc,
401 vpx_codec_enc_cfg_t *cfg) {
402 unsigned int sl, tl;
403 // Set the layer (cumulative) framerate and the target layer (non-cumulative)
404 // per-frame-bandwidth, for the rate control encoding stats below.
405 const double framerate = cfg->g_timebase.den / cfg->g_timebase.num;
406
407 for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
408 for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
409 const int layer = sl * cfg->ts_number_layers + tl;
410 const int tlayer0 = sl * cfg->ts_number_layers;
411 rc->layer_framerate[layer] =
412 framerate / cfg->ts_rate_decimator[tl];
413 if (tl > 0) {
414 rc->layer_pfb[layer] = 1000.0 *
415 (cfg->layer_target_bitrate[layer] -
416 cfg->layer_target_bitrate[layer - 1]) /
417 (rc->layer_framerate[layer] -
418 rc->layer_framerate[layer - 1]);
419 } else {
420 rc->layer_pfb[tlayer0] = 1000.0 *
421 cfg->layer_target_bitrate[tlayer0] /
422 rc->layer_framerate[tlayer0];
423 }
424 rc->layer_input_frames[layer] = 0;
425 rc->layer_enc_frames[layer] = 0;
426 rc->layer_tot_enc_frames[layer] = 0;
427 rc->layer_encoding_bitrate[layer] = 0.0;
428 rc->layer_avg_frame_size[layer] = 0.0;
429 rc->layer_avg_rate_mismatch[layer] = 0.0;
430 }
431 }
432 rc->window_count = 0;
433 rc->window_size = 15;
434 rc->avg_st_encoding_bitrate = 0.0;
435 rc->variance_st_encoding_bitrate = 0.0;
436 }
437
438 static void printout_rate_control_summary(struct RateControlStats *rc,
439 vpx_codec_enc_cfg_t *cfg,
440 int frame_cnt) {
441 unsigned int sl, tl;
442 int tot_num_frames = 0;
443 double perc_fluctuation = 0.0;
444 printf("Total number of processed frames: %d\n\n", frame_cnt - 1);
445 printf("Rate control layer stats for sl%d tl%d layer(s):\n\n",
446 cfg->ss_number_layers, cfg->ts_number_layers);
447 for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
448 for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
449 const int layer = sl * cfg->ts_number_layers + tl;
450 const int num_dropped = (tl > 0) ?
451 (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer]) :
452 (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer] - 1);
453 if (!sl)
454 tot_num_frames += rc->layer_input_frames[layer];
455 rc->layer_encoding_bitrate[layer] = 0.001 * rc->layer_framerate[layer] *
456 rc->layer_encoding_bitrate[layer] / tot_num_frames;
457 rc->layer_avg_frame_size[layer] = rc->layer_avg_frame_size[layer] /
458 rc->layer_enc_frames[layer];
459 rc->layer_avg_rate_mismatch[layer] =
460 100.0 * rc->layer_avg_rate_mismatch[layer] /
461 rc->layer_enc_frames[layer];
462 printf("For layer#: sl%d tl%d \n", sl, tl);
463 printf("Bitrate (target vs actual): %d %f.0 kbps\n",
464 cfg->layer_target_bitrate[layer],
465 rc->layer_encoding_bitrate[layer]);
466 printf("Average frame size (target vs actual): %f %f bits\n",
467 rc->layer_pfb[layer], rc->layer_avg_frame_size[layer]);
468 printf("Average rate_mismatch: %f\n",
469 rc->layer_avg_rate_mismatch[layer]);
470 printf("Number of input frames, encoded (non-key) frames, "
471 "and percent dropped frames: %d %d %f.0 \n",
472 rc->layer_input_frames[layer], rc->layer_enc_frames[layer],
473 100.0 * num_dropped / rc->layer_input_frames[layer]);
474 printf("\n");
475 }
476 }
477 rc->avg_st_encoding_bitrate = rc->avg_st_encoding_bitrate / rc->window_count;
478 rc->variance_st_encoding_bitrate =
479 rc->variance_st_encoding_bitrate / rc->window_count -
480 (rc->avg_st_encoding_bitrate * rc->avg_st_encoding_bitrate);
481 perc_fluctuation = 100.0 * sqrt(rc->variance_st_encoding_bitrate) /
482 rc->avg_st_encoding_bitrate;
483 printf("Short-time stats, for window of %d frames: \n", rc->window_size);
484 printf("Average, rms-variance, and percent-fluct: %f %f %f \n",
485 rc->avg_st_encoding_bitrate,
486 sqrt(rc->variance_st_encoding_bitrate),
487 perc_fluctuation);
488 if (frame_cnt != tot_num_frames)
489 die("Error: Number of input frames not equal to output encoded frames != "
490 "%d tot_num_frames = %d\n", frame_cnt, tot_num_frames);
491 }
492
493 vpx_codec_err_t parse_superframe_index(const uint8_t *data,
494 size_t data_sz,
495 uint32_t sizes[8], int *count) {
496 // A chunk ending with a byte matching 0xc0 is an invalid chunk unless
497 // it is a super frame index. If the last byte of real video compression
498 // data is 0xc0 the encoder must add a 0 byte. If we have the marker but
499 // not the associated matching marker byte at the front of the index we have
500 // an invalid bitstream and need to return an error.
501
502 uint8_t marker;
503
504 marker = *(data + data_sz - 1);
505 *count = 0;
506
507
508 if ((marker & 0xe0) == 0xc0) {
509 const uint32_t frames = (marker & 0x7) + 1;
510 const uint32_t mag = ((marker >> 3) & 0x3) + 1;
511 const size_t index_sz = 2 + mag * frames;
512
513 // This chunk is marked as having a superframe index but doesn't have
514 // enough data for it, thus it's an invalid superframe index.
515 if (data_sz < index_sz)
516 return VPX_CODEC_CORRUPT_FRAME;
517
518 {
519 const uint8_t marker2 = *(data + data_sz - index_sz);
520
521 // This chunk is marked as having a superframe index but doesn't have
522 // the matching marker byte at the front of the index therefore it's an
523 // invalid chunk.
524 if (marker != marker2)
525 return VPX_CODEC_CORRUPT_FRAME;
526 }
527
528 {
529 // Found a valid superframe index.
530 uint32_t i, j;
531 const uint8_t *x = &data[data_sz - index_sz + 1];
532
533 for (i = 0; i < frames; ++i) {
534 uint32_t this_sz = 0;
535
536 for (j = 0; j < mag; ++j)
537 this_sz |= (*x++) << (j * 8);
538 sizes[i] = this_sz;
539 }
540 *count = frames;
541 }
542 }
543 return VPX_CODEC_OK;
544 }
545 #endif
546
547 // Example pattern for spatial layers and 2 temporal layers used in the
548 // bypass/flexible mode. The pattern corresponds to the pattern
549 // VP9E_TEMPORAL_LAYERING_MODE_0101 (temporal_layering_mode == 2) used in
550 // non-flexible mode.
551 void set_frame_flags_bypass_mode(int sl, int tl, int num_spatial_layers,
552 int is_key_frame,
553 vpx_svc_ref_frame_config_t *ref_frame_config) {
554 for (sl = 0; sl < num_spatial_layers; ++sl) {
555 if (!tl) {
556 if (!sl) {
557 ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_GF |
558 VP8_EFLAG_NO_REF_ARF |
559 VP8_EFLAG_NO_UPD_GF |
560 VP8_EFLAG_NO_UPD_ARF;
561 } else {
562 if (is_key_frame) {
563 ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_LAST |
564 VP8_EFLAG_NO_REF_ARF |
565 VP8_EFLAG_NO_UPD_GF |
566 VP8_EFLAG_NO_UPD_ARF;
567 } else {
568 ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_ARF |
569 VP8_EFLAG_NO_UPD_GF |
570 VP8_EFLAG_NO_UPD_ARF;
571 }
572 }
573 } else if (tl == 1) {
574 if (!sl) {
575 ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_GF |
576 VP8_EFLAG_NO_REF_ARF |
577 VP8_EFLAG_NO_UPD_LAST |
578 VP8_EFLAG_NO_UPD_GF;
579 } else {
580 ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_ARF |
581 VP8_EFLAG_NO_UPD_LAST |
582 VP8_EFLAG_NO_UPD_GF;
583 }
584 }
585 if (tl == 0) {
586 ref_frame_config->lst_fb_idx[sl] = sl;
587 if (sl)
588 ref_frame_config->gld_fb_idx[sl] = sl - 1;
589 else
590 ref_frame_config->gld_fb_idx[sl] = 0;
591 ref_frame_config->alt_fb_idx[sl] = 0;
592 } else if (tl == 1) {
593 ref_frame_config->lst_fb_idx[sl] = sl;
594 ref_frame_config->gld_fb_idx[sl] = num_spatial_layers + sl - 1;
595 ref_frame_config->alt_fb_idx[sl] = num_spatial_layers + sl;
596 }
597 }
598 }
599
600 int main(int argc, const char **argv) {
601 AppInput app_input = {0};
602 VpxVideoWriter *writer = NULL;
603 VpxVideoInfo info = {0};
604 vpx_codec_ctx_t codec;
605 vpx_codec_enc_cfg_t enc_cfg;
606 SvcContext svc_ctx;
607 uint32_t i;
608 uint32_t frame_cnt = 0;
609 vpx_image_t raw;
610 vpx_codec_err_t res;
611 int pts = 0; /* PTS starts at 0 */
612 int frame_duration = 1; /* 1 timebase tick per frame */
613 FILE *infile = NULL;
614 int end_of_stream = 0;
615 int frames_received = 0;
616 #if OUTPUT_RC_STATS
617 VpxVideoWriter *outfile[VPX_TS_MAX_LAYERS] = {NULL};
618 struct RateControlStats rc;
619 vpx_svc_layer_id_t layer_id;
620 vpx_svc_ref_frame_config_t ref_frame_config;
621 int sl, tl;
622 double sum_bitrate = 0.0;
623 double sum_bitrate2 = 0.0;
624 double framerate = 30.0;
625 #endif
626 struct vpx_usec_timer timer;
627 int64_t cx_time = 0;
628 memset(&svc_ctx, 0, sizeof(svc_ctx));
629 svc_ctx.log_print = 1;
630 exec_name = argv[0];
631 parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg);
632
633 // Allocate image buffer
634 #if CONFIG_VP9_HIGHBITDEPTH
635 if (!vpx_img_alloc(&raw, enc_cfg.g_input_bit_depth == 8 ?
636 VPX_IMG_FMT_I420 : VPX_IMG_FMT_I42016,
637 enc_cfg.g_w, enc_cfg.g_h, 32)) {
638 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
639 }
640 #else
641 if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32)) {
642 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
643 }
644 #endif // CONFIG_VP9_HIGHBITDEPTH
645
646 if (!(infile = fopen(app_input.input_filename, "rb")))
647 die("Failed to open %s for reading\n", app_input.input_filename);
648
649 // Initialize codec
650 if (vpx_svc_init(&svc_ctx, &codec, vpx_codec_vp9_cx(), &enc_cfg) !=
651 VPX_CODEC_OK)
652 die("Failed to initialize encoder\n");
653
654 #if OUTPUT_RC_STATS
655 if (svc_ctx.output_rc_stat) {
656 set_rate_control_stats(&rc, &enc_cfg);
657 framerate = enc_cfg.g_timebase.den / enc_cfg.g_timebase.num;
658 }
659 #endif
660
661 info.codec_fourcc = VP9_FOURCC;
662 info.time_base.numerator = enc_cfg.g_timebase.num;
663 info.time_base.denominator = enc_cfg.g_timebase.den;
664
665 if (!(app_input.passes == 2 && app_input.pass == 1)) {
666 // We don't save the bitstream for the 1st pass on two pass rate control
667 writer = vpx_video_writer_open(app_input.output_filename, kContainerIVF,
668 &info);
669 if (!writer)
670 die("Failed to open %s for writing\n", app_input.output_filename);
671 }
672 #if OUTPUT_RC_STATS
673 // For now, just write temporal layer streams.
674 // TODO(wonkap): do spatial by re-writing superframe.
675 if (svc_ctx.output_rc_stat) {
676 for (tl = 0; tl < enc_cfg.ts_number_layers; ++tl) {
677 char file_name[PATH_MAX];
678
679 snprintf(file_name, sizeof(file_name), "%s_t%d.ivf",
680 app_input.output_filename, tl);
681 outfile[tl] = vpx_video_writer_open(file_name, kContainerIVF, &info);
682 if (!outfile[tl])
683 die("Failed to open %s for writing", file_name);
684 }
685 }
686 #endif
687
688 // skip initial frames
689 for (i = 0; i < app_input.frames_to_skip; ++i)
690 vpx_img_read(&raw, infile);
691
692 if (svc_ctx.speed != -1)
693 vpx_codec_control(&codec, VP8E_SET_CPUUSED, svc_ctx.speed);
694 if (svc_ctx.threads)
695 vpx_codec_control(&codec, VP9E_SET_TILE_COLUMNS, (svc_ctx.threads >> 1));
696 if (svc_ctx.speed >= 5 && svc_ctx.aqmode == 1)
697 vpx_codec_control(&codec, VP9E_SET_AQ_MODE, 3);
698
699
700 // Encode frames
701 while (!end_of_stream) {
702 vpx_codec_iter_t iter = NULL;
703 const vpx_codec_cx_pkt_t *cx_pkt;
704 if (frame_cnt >= app_input.frames_to_code || !vpx_img_read(&raw, infile)) {
705 // We need one extra vpx_svc_encode call at end of stream to flush
706 // encoder and get remaining data
707 end_of_stream = 1;
708 }
709
710 // For BYPASS/FLEXIBLE mode, set the frame flags (reference and updates)
711 // and the buffer indices for each spatial layer of the current
712 // (super)frame to be encoded. The temporal layer_id for the current frame
713 // also needs to be set.
714 // TODO(marpan): Should rename the "VP9E_TEMPORAL_LAYERING_MODE_BYPASS"
715 // mode to "VP9E_LAYERING_MODE_BYPASS".
716 if (svc_ctx.temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_BYPASS) {
717 // Example for 2 temporal layers.
718 if (frame_cnt % 2 == 0)
719 layer_id.temporal_layer_id = 0;
720 else
721 layer_id.temporal_layer_id = 1;
722 // Note that we only set the temporal layer_id, since we are calling
723 // the encode for the whole superframe. The encoder will internally loop
724 // over all the spatial layers for the current superframe.
725 vpx_codec_control(&codec, VP9E_SET_SVC_LAYER_ID, &layer_id);
726 set_frame_flags_bypass_mode(sl, layer_id.temporal_layer_id,
727 svc_ctx.spatial_layers,
728 frame_cnt == 0,
729 &ref_frame_config);
730 vpx_codec_control(&codec, VP9E_SET_SVC_REF_FRAME_CONFIG,
731 &ref_frame_config);
732 }
733
734 vpx_usec_timer_start(&timer);
735 res = vpx_svc_encode(&svc_ctx, &codec, (end_of_stream ? NULL : &raw),
736 pts, frame_duration, svc_ctx.speed >= 5 ?
737 VPX_DL_REALTIME : VPX_DL_GOOD_QUALITY);
738 vpx_usec_timer_mark(&timer);
739 cx_time += vpx_usec_timer_elapsed(&timer);
740
741 printf("%s", vpx_svc_get_message(&svc_ctx));
742 if (res != VPX_CODEC_OK) {
743 die_codec(&codec, "Failed to encode frame");
744 }
745
746 while ((cx_pkt = vpx_codec_get_cx_data(&codec, &iter)) != NULL) {
747 switch (cx_pkt->kind) {
748 case VPX_CODEC_CX_FRAME_PKT: {
749 if (cx_pkt->data.frame.sz > 0) {
750 #if OUTPUT_RC_STATS
751 uint32_t sizes[8];
752 int count = 0;
753 #endif
754 vpx_video_writer_write_frame(writer,
755 cx_pkt->data.frame.buf,
756 cx_pkt->data.frame.sz,
757 cx_pkt->data.frame.pts);
758 #if OUTPUT_RC_STATS
759 // TODO(marpan/wonkap): Put this (to line728) in separate function.
760 if (svc_ctx.output_rc_stat) {
761 vpx_codec_control(&codec, VP9E_GET_SVC_LAYER_ID, &layer_id);
762 parse_superframe_index(cx_pkt->data.frame.buf,
763 cx_pkt->data.frame.sz, sizes, &count);
764 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
765 ++rc.layer_input_frames[sl * enc_cfg.ts_number_layers +
766 layer_id.temporal_layer_id];
767 }
768 for (tl = layer_id.temporal_layer_id;
769 tl < enc_cfg.ts_number_layers; ++tl) {
770 vpx_video_writer_write_frame(outfile[tl],
771 cx_pkt->data.frame.buf,
772 cx_pkt->data.frame.sz,
773 cx_pkt->data.frame.pts);
774 }
775
776 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
777 for (tl = layer_id.temporal_layer_id;
778 tl < enc_cfg.ts_number_layers; ++tl) {
779 const int layer = sl * enc_cfg.ts_number_layers + tl;
780 ++rc.layer_tot_enc_frames[layer];
781 rc.layer_encoding_bitrate[layer] += 8.0 * sizes[sl];
782 // Keep count of rate control stats per layer, for non-key
783 // frames.
784 if (tl == layer_id.temporal_layer_id &&
785 !(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY)) {
786 rc.layer_avg_frame_size[layer] += 8.0 * sizes[sl];
787 rc.layer_avg_rate_mismatch[layer] +=
788 fabs(8.0 * sizes[sl] - rc.layer_pfb[layer]) /
789 rc.layer_pfb[layer];
790 ++rc.layer_enc_frames[layer];
791 }
792 }
793 }
794
795 // Update for short-time encoding bitrate states, for moving
796 // window of size rc->window, shifted by rc->window / 2.
797 // Ignore first window segment, due to key frame.
798 if (frame_cnt > rc.window_size) {
799 tl = layer_id.temporal_layer_id;
800 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
801 sum_bitrate += 0.001 * 8.0 * sizes[sl] * framerate;
802 }
803 if (frame_cnt % rc.window_size == 0) {
804 rc.window_count += 1;
805 rc.avg_st_encoding_bitrate += sum_bitrate / rc.window_size;
806 rc.variance_st_encoding_bitrate +=
807 (sum_bitrate / rc.window_size) *
808 (sum_bitrate / rc.window_size);
809 sum_bitrate = 0.0;
810 }
811 }
812
813 // Second shifted window.
814 if (frame_cnt > rc.window_size + rc.window_size / 2) {
815 tl = layer_id.temporal_layer_id;
816 for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
817 sum_bitrate2 += 0.001 * 8.0 * sizes[sl] * framerate;
818 }
819
820 if (frame_cnt > 2 * rc.window_size &&
821 frame_cnt % rc.window_size == 0) {
822 rc.window_count += 1;
823 rc.avg_st_encoding_bitrate += sum_bitrate2 / rc.window_size;
824 rc.variance_st_encoding_bitrate +=
825 (sum_bitrate2 / rc.window_size) *
826 (sum_bitrate2 / rc.window_size);
827 sum_bitrate2 = 0.0;
828 }
829 }
830 }
831 #endif
832 }
833
834 printf("SVC frame: %d, kf: %d, size: %d, pts: %d\n", frames_received,
835 !!(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY),
836 (int)cx_pkt->data.frame.sz, (int)cx_pkt->data.frame.pts);
837 ++frames_received;
838 break;
839 }
840 case VPX_CODEC_STATS_PKT: {
841 stats_write(&app_input.rc_stats,
842 cx_pkt->data.twopass_stats.buf,
843 cx_pkt->data.twopass_stats.sz);
844 break;
845 }
846 default: {
847 break;
848 }
849 }
850 }
851
852 if (!end_of_stream) {
853 ++frame_cnt;
854 pts += frame_duration;
855 }
856 }
857 printf("Processed %d frames\n", frame_cnt);
858 fclose(infile);
859 #if OUTPUT_RC_STATS
860 if (svc_ctx.output_rc_stat) {
861 printout_rate_control_summary(&rc, &enc_cfg, frame_cnt);
862 printf("\n");
863 }
864 #endif
865 if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec");
866 if (app_input.passes == 2)
867 stats_close(&app_input.rc_stats, 1);
868 if (writer) {
869 vpx_video_writer_close(writer);
870 }
871 #if OUTPUT_RC_STATS
872 if (svc_ctx.output_rc_stat) {
873 for (tl = 0; tl < enc_cfg.ts_number_layers; ++tl) {
874 vpx_video_writer_close(outfile[tl]);
875 }
876 }
877 #endif
878 printf("Frame cnt and encoding time/FPS stats for encoding: %d %f %f \n",
879 frame_cnt,
880 1000 * (float)cx_time / (double)(frame_cnt * 1000000),
881 1000000 * (double)frame_cnt / (double)cx_time);
882 vpx_img_free(&raw);
883 // display average size, psnr
884 printf("%s", vpx_svc_dump_statistics(&svc_ctx));
885 vpx_svc_release(&svc_ctx);
886 return EXIT_SUCCESS;
887 }
vpx_codec_cx_pkt::twopass_stats
vpx_fixed_buf_t twopass_stats
Definition: vpx_encoder.h:214
vpx_codec_enc_cfg::ts_number_layers
unsigned int ts_number_layers
Number of temporal coding layers.
Definition: vpx_encoder.h:715
VP8E_SET_CPUUSED
Codec control function to set encoder internal speed settings.
Definition: vp8cx.h:173
VPX_MAX_LAYERS
#define VPX_MAX_LAYERS
Definition: vpx_encoder.h:46
VP8_EFLAG_NO_REF_LAST
#define VP8_EFLAG_NO_REF_LAST
Don&#39;t reference the last frame.
Definition: vp8cx.h:67
VP8_EFLAG_NO_UPD_GF
#define VP8_EFLAG_NO_UPD_GF
Don&#39;t update the golden frame.
Definition: vp8cx.h:101
vpx_image
Image Descriptor.
Definition: vpx_image.h:88
vpx_encoder.h
Describes the encoder algorithm interface to applications.
vpx_codec_iface_name
const char * vpx_codec_iface_name(vpx_codec_iface_t *iface)
Return the name for a given interface.
vpx_codec_err_to_string
const char * vpx_codec_err_to_string(vpx_codec_err_t err)
Convert error number to printable string.
vpx_svc_ref_frame_config::lst_fb_idx
int lst_fb_idx[5]
Definition: vp8cx.h:693
VPX_TS_MAX_LAYERS
#define VPX_TS_MAX_LAYERS
Definition: vpx_encoder.h:40
vpx_codec_enc_cfg::g_timebase
struct vpx_rational g_timebase
Stream timebase units.
Definition: vpx_encoder.h:397
vpx_codec_enc_cfg::layer_target_bitrate
unsigned int layer_target_bitrate[12]
Target bitrate for each spatial/temporal layer.
Definition: vpx_encoder.h:755
VP8_EFLAG_NO_REF_GF
#define VP8_EFLAG_NO_REF_GF
Don&#39;t reference the golden frame.
Definition: vp8cx.h:76
vpx_codec_enc_cfg::g_input_bit_depth
unsigned int g_input_bit_depth
Bit-depth of the input frames.
Definition: vpx_encoder.h:383
vpx_rational::den
int den
Definition: vpx_encoder.h:261
VPX_CODEC_STATS_PKT
Definition: vpx_encoder.h:177
vpx_codec_enc_cfg::kf_max_dist
unsigned int kf_max_dist
Keyframe maximum interval.
Definition: vpx_encoder.h:685
vpx_codec_enc_cfg::g_lag_in_frames
unsigned int g_lag_in_frames
Allow lagged encoding.
Definition: vpx_encoder.h:429
vpx_codec_enc_cfg
Encoder configuration structure.
Definition: vpx_encoder.h:314
VPX_CODEC_CORRUPT_FRAME
The coded data for this stream is corrupt or incomplete.
Definition: vpx_codec.h:129
vpx_codec_cx_pkt
Encoder output packet.
Definition: vpx_encoder.h:195
vpx_fixed_buf::buf
void * buf
Definition: vpx_encoder.h:109
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:729
vpx_codec_enc_cfg::kf_min_dist
unsigned int kf_min_dist
Keyframe minimum interval.
Definition: vpx_encoder.h:675
VPX_RC_FIRST_PASS
Definition: vpx_encoder.h:268
vpx_codec_enc_cfg::g_profile
unsigned int g_profile
Bitstream profile to use.
Definition: vpx_encoder.h:346
VPX_RC_LAST_PASS
Definition: vpx_encoder.h:269
VP9E_SET_TILE_COLUMNS
Codec control function to set number of tile columns.
Definition: vp8cx.h:362
vpx_codec_cx_pkt::frame
struct vpx_codec_cx_pkt::@1::@2 frame
vpx_svc_ref_frame_config::frame_flags
int frame_flags[5]
Definition: vp8cx.h:692
vpx_img_alloc
vpx_image_t * vpx_img_alloc(vpx_image_t *img, vpx_img_fmt_t fmt, unsigned int d_w, unsigned int d_h, unsigned int align)
Open a descriptor, allocating storage for the underlying image.
VPX_IMG_FMT_I420
Definition: vpx_image.h:56
vpx_codec_enc_cfg::g_w
unsigned int g_w
Width of the frame.
Definition: vpx_encoder.h:357
VP9E_SET_AQ_MODE
Codec control function to set adaptive quantization mode.
Definition: vp8cx.h:409
VP9E_GET_SVC_LAYER_ID
Codec control function to get svc layer ID.
Definition: vp8cx.h:475
vpx_codec_enc_cfg::g_h
unsigned int g_h
Height of the frame.
Definition: vpx_encoder.h:367
vpx_codec_cx_pkt::kind
enum vpx_codec_cx_pkt_kind kind
Definition: vpx_encoder.h:196
vpx_svc_layer_id
vp9 svc layer parameters
Definition: vp8cx.h:678
VPX_CODEC_OK
Operation completed without error.
Definition: vpx_codec.h:91
VP8_EFLAG_NO_UPD_LAST
#define VP8_EFLAG_NO_UPD_LAST
Don&#39;t update the last frame.
Definition: vp8cx.h:93
vpx_img_free
void vpx_img_free(vpx_image_t *img)
Close an image descriptor.
vpx_codec_enc_cfg::rc_target_bitrate
unsigned int rc_target_bitrate
Target data rate.
Definition: vpx_encoder.h:525
VPX_DL_REALTIME
#define VPX_DL_REALTIME
Definition: vpx_encoder.h:911
vpx_rational::num
int num
Definition: vpx_encoder.h:260
VPX_BITS_12
Definition: vpx_codec.h:222
VP9E_SET_SVC_REF_FRAME_CONFIG
Codec control function to set the frame flags and buffer indices for spatial layers. The frame flags and buffer indices are set using the struct vpx_svc_ref_frame_config defined below.
Definition: vp8cx.h:548
vpx_codec_enc_cfg::g_pass
enum vpx_enc_pass g_pass
Multi-pass Encoding Mode.
Definition: vpx_encoder.h:414
VPX_DL_GOOD_QUALITY
#define VPX_DL_GOOD_QUALITY
Definition: vpx_encoder.h:914
vpx_codec_enc_cfg::ss_number_layers
unsigned int ss_number_layers
Number of spatial coding layers.
Definition: vpx_encoder.h:695
vpx_codec_enc_cfg::g_bit_depth
vpx_bit_depth_t g_bit_depth
Bit-depth of the codec.
Definition: vpx_encoder.h:375
vp8cx.h
Provides definitions for using VP8 or VP9 encoder algorithm within the vpx Codec Interface.
VP9E_TEMPORAL_LAYERING_MODE_BYPASS
Bypass mode. Used when application needs to control temporal layering. This will only work when the n...
Definition: vp8cx.h:586
vpx_codec_err_t
vpx_codec_err_t
Algorithm return codes.
Definition: vpx_codec.h:89
vpx_codec_get_cx_data
const vpx_codec_cx_pkt_t * vpx_codec_get_cx_data(vpx_codec_ctx_t *ctx, vpx_codec_iter_t *iter)
Encoded data iterator.
vpx_codec_cx_pkt::data
union vpx_codec_cx_pkt::@1 data
vpx_codec_enc_cfg::temporal_layering_mode
int temporal_layering_mode
Temporal layering mode indicating which temporal layering scheme to use.
Definition: vpx_encoder.h:763
vpx_codec_enc_cfg::rc_twopass_stats_in
vpx_fixed_buf_t rc_twopass_stats_in
Two-pass stats buffer.
Definition: vpx_encoder.h:512
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 reserved)
Get a default configuration.
VPX_CQ
Definition: vpx_encoder.h:277
vpx_codec_control
#define vpx_codec_control(ctx, id, data)
vpx_codec_control wrapper macro
Definition: vpx_codec.h:407
VP8_EFLAG_NO_REF_ARF
#define VP8_EFLAG_NO_REF_ARF
Don&#39;t reference the alternate reference frame.
Definition: vp8cx.h:85
vpx_codec_destroy
vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx)
Destroy a codec instance.
vpx_fixed_buf::sz
size_t sz
Definition: vpx_encoder.h:110
VPX_BITS_8
Definition: vpx_codec.h:220
vpx_svc_ref_frame_config
vp9 svc frame flag parameters.
Definition: vp8cx.h:691
VPX_FRAME_IS_KEY
#define VPX_FRAME_IS_KEY
Definition: vpx_encoder.h:130
VPX_BITS_10
Definition: vpx_codec.h:221
vpx_svc_ref_frame_config::alt_fb_idx
int alt_fb_idx[5]
Definition: vp8cx.h:695
vpx_codec_iter_t
const void * vpx_codec_iter_t
Iterator.
Definition: vpx_codec.h:188
VPX_CODEC_CX_FRAME_PKT
Definition: vpx_encoder.h:176
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:652
vpx_codec_enc_cfg::g_error_resilient
vpx_codec_er_flags_t g_error_resilient
Enable error resilient modes.
Definition: vpx_encoder.h:406
VP8_EFLAG_NO_UPD_ARF
#define VP8_EFLAG_NO_UPD_ARF
Don&#39;t update the alternate reference frame.
Definition: vp8cx.h:109
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:644
vpx_svc_ref_frame_config::gld_fb_idx
int gld_fb_idx[5]
Definition: vp8cx.h:694
VP9E_SET_SVC_LAYER_ID
Codec control function to set svc layer for spatial and temporal.
Definition: vp8cx.h:458
vpx_codec_enc_cfg::rc_end_usage
enum vpx_rc_mode rc_end_usage
Rate control algorithm to use.
Definition: vpx_encoder.h:504
VPX_RC_ONE_PASS
Definition: vpx_encoder.h:267
vpx_codec_ctx
Codec context structure.
Definition: vpx_codec.h:199