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 "vpx/svc_context.h"
29 #include "vpx/vp8cx.h"
30 #include "vpx/vpx_encoder.h"
31 #include "../vpxstats.h"
32 #include "vp9/encoder/vp9_encoder.h"
33 #define OUTPUT_RC_STATS 1
34 
35 static const arg_def_t skip_frames_arg =
36  ARG_DEF("s", "skip-frames", 1, "input frames to skip");
37 static const arg_def_t frames_arg =
38  ARG_DEF("f", "frames", 1, "number of frames to encode");
39 static const arg_def_t threads_arg =
40  ARG_DEF("th", "threads", 1, "number of threads to use");
41 #if OUTPUT_RC_STATS
42 static const arg_def_t output_rc_stats_arg =
43  ARG_DEF("rcstat", "output_rc_stats", 1, "output rc stats");
44 #endif
45 static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width");
46 static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height");
47 static const arg_def_t timebase_arg =
48  ARG_DEF("t", "timebase", 1, "timebase (num/den)");
49 static const arg_def_t bitrate_arg = ARG_DEF(
50  "b", "target-bitrate", 1, "encoding bitrate, in kilobits per second");
51 static const arg_def_t spatial_layers_arg =
52  ARG_DEF("sl", "spatial-layers", 1, "number of spatial SVC layers");
53 static const arg_def_t temporal_layers_arg =
54  ARG_DEF("tl", "temporal-layers", 1, "number of temporal SVC layers");
55 static const arg_def_t temporal_layering_mode_arg =
56  ARG_DEF("tlm", "temporal-layering-mode", 1,
57  "temporal layering scheme."
58  "VP9E_TEMPORAL_LAYERING_MODE");
59 static const arg_def_t kf_dist_arg =
60  ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes");
61 static const arg_def_t scale_factors_arg =
62  ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)");
63 static const arg_def_t passes_arg =
64  ARG_DEF("p", "passes", 1, "Number of passes (1/2)");
65 static const arg_def_t pass_arg =
66  ARG_DEF(NULL, "pass", 1, "Pass to execute (1/2)");
67 static const arg_def_t fpf_name_arg =
68  ARG_DEF(NULL, "fpf", 1, "First pass statistics file name");
69 static const arg_def_t min_q_arg =
70  ARG_DEF(NULL, "min-q", 1, "Minimum quantizer");
71 static const arg_def_t max_q_arg =
72  ARG_DEF(NULL, "max-q", 1, "Maximum quantizer");
73 static const arg_def_t min_bitrate_arg =
74  ARG_DEF(NULL, "min-bitrate", 1, "Minimum bitrate");
75 static const arg_def_t max_bitrate_arg =
76  ARG_DEF(NULL, "max-bitrate", 1, "Maximum bitrate");
77 static const arg_def_t lag_in_frame_arg =
78  ARG_DEF(NULL, "lag-in-frames", 1,
79  "Number of frame to input before "
80  "generating any outputs");
81 static const arg_def_t rc_end_usage_arg =
82  ARG_DEF(NULL, "rc-end-usage", 1, "0 - 3: VBR, CBR, CQ, Q");
83 static const arg_def_t speed_arg =
84  ARG_DEF("sp", "speed", 1, "speed configuration");
85 static const arg_def_t aqmode_arg =
86  ARG_DEF("aq", "aqmode", 1, "aq-mode off/on");
87 static const arg_def_t bitrates_arg =
88  ARG_DEF("bl", "bitrates", 1, "bitrates[sl * num_tl + tl]");
89 
90 #if CONFIG_VP9_HIGHBITDEPTH
91 static const struct arg_enum_list bitdepth_enum[] = {
92  { "8", VPX_BITS_8 }, { "10", VPX_BITS_10 }, { "12", VPX_BITS_12 }, { NULL, 0 }
93 };
94 
95 static const arg_def_t bitdepth_arg = ARG_DEF_ENUM(
96  "d", "bit-depth", 1, "Bit depth for codec 8, 10 or 12. ", bitdepth_enum);
97 #endif // CONFIG_VP9_HIGHBITDEPTH
98 
99 static const arg_def_t *svc_args[] = { &frames_arg,
100  &width_arg,
101  &height_arg,
102  &timebase_arg,
103  &bitrate_arg,
104  &skip_frames_arg,
105  &spatial_layers_arg,
106  &kf_dist_arg,
107  &scale_factors_arg,
108  &passes_arg,
109  &pass_arg,
110  &fpf_name_arg,
111  &min_q_arg,
112  &max_q_arg,
113  &min_bitrate_arg,
114  &max_bitrate_arg,
115  &temporal_layers_arg,
116  &temporal_layering_mode_arg,
117  &lag_in_frame_arg,
118  &threads_arg,
119  &aqmode_arg,
120 #if OUTPUT_RC_STATS
121  &output_rc_stats_arg,
122 #endif
123 
124 #if CONFIG_VP9_HIGHBITDEPTH
125  &bitdepth_arg,
126 #endif
127  &speed_arg,
128  &rc_end_usage_arg,
129  &bitrates_arg,
130  NULL };
131 
132 static const uint32_t default_frames_to_skip = 0;
133 static const uint32_t default_frames_to_code = 60 * 60;
134 static const uint32_t default_width = 1920;
135 static const uint32_t default_height = 1080;
136 static const uint32_t default_timebase_num = 1;
137 static const uint32_t default_timebase_den = 60;
138 static const uint32_t default_bitrate = 1000;
139 static const uint32_t default_spatial_layers = 5;
140 static const uint32_t default_temporal_layers = 1;
141 static const uint32_t default_kf_dist = 100;
142 static const uint32_t default_temporal_layering_mode = 0;
143 static const uint32_t default_output_rc_stats = 0;
144 static const int32_t default_speed = -1; // -1 means use library default.
145 static const uint32_t default_threads = 0; // zero means use library default.
146 
147 typedef struct {
148  const char *input_filename;
149  const char *output_filename;
150  uint32_t frames_to_code;
151  uint32_t frames_to_skip;
152  struct VpxInputContext input_ctx;
153  stats_io_t rc_stats;
154  int passes;
155  int pass;
156 } AppInput;
157 
158 static const char *exec_name;
159 
160 void usage_exit(void) {
161  fprintf(stderr, "Usage: %s <options> input_filename output_filename\n",
162  exec_name);
163  fprintf(stderr, "Options:\n");
164  arg_show_usage(stderr, svc_args);
165  exit(EXIT_FAILURE);
166 }
167 
168 static void parse_command_line(int argc, const char **argv_,
169  AppInput *app_input, SvcContext *svc_ctx,
170  vpx_codec_enc_cfg_t *enc_cfg) {
171  struct arg arg;
172  char **argv = NULL;
173  char **argi = NULL;
174  char **argj = NULL;
175  vpx_codec_err_t res;
176  int passes = 0;
177  int pass = 0;
178  const char *fpf_file_name = NULL;
179  unsigned int min_bitrate = 0;
180  unsigned int max_bitrate = 0;
181  char string_options[1024] = { 0 };
182 
183  // initialize SvcContext with parameters that will be passed to vpx_svc_init
184  svc_ctx->log_level = SVC_LOG_DEBUG;
185  svc_ctx->spatial_layers = default_spatial_layers;
186  svc_ctx->temporal_layers = default_temporal_layers;
187  svc_ctx->temporal_layering_mode = default_temporal_layering_mode;
188 #if OUTPUT_RC_STATS
189  svc_ctx->output_rc_stat = default_output_rc_stats;
190 #endif
191  svc_ctx->speed = default_speed;
192  svc_ctx->threads = default_threads;
193 
194  // start with default encoder configuration
195  res = vpx_codec_enc_config_default(vpx_codec_vp9_cx(), enc_cfg, 0);
196  if (res) {
197  die("Failed to get config: %s\n", vpx_codec_err_to_string(res));
198  }
199  // update enc_cfg with app default values
200  enc_cfg->g_w = default_width;
201  enc_cfg->g_h = default_height;
202  enc_cfg->g_timebase.num = default_timebase_num;
203  enc_cfg->g_timebase.den = default_timebase_den;
204  enc_cfg->rc_target_bitrate = default_bitrate;
205  enc_cfg->kf_min_dist = default_kf_dist;
206  enc_cfg->kf_max_dist = default_kf_dist;
207  enc_cfg->rc_end_usage = VPX_CQ;
208 
209  // initialize AppInput with default values
210  app_input->frames_to_code = default_frames_to_code;
211  app_input->frames_to_skip = default_frames_to_skip;
212 
213  // process command line options
214  argv = argv_dup(argc - 1, argv_ + 1);
215  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
216  arg.argv_step = 1;
217 
218  if (arg_match(&arg, &frames_arg, argi)) {
219  app_input->frames_to_code = arg_parse_uint(&arg);
220  } else if (arg_match(&arg, &width_arg, argi)) {
221  enc_cfg->g_w = arg_parse_uint(&arg);
222  } else if (arg_match(&arg, &height_arg, argi)) {
223  enc_cfg->g_h = arg_parse_uint(&arg);
224  } else if (arg_match(&arg, &timebase_arg, argi)) {
225  enc_cfg->g_timebase = arg_parse_rational(&arg);
226  } else if (arg_match(&arg, &bitrate_arg, argi)) {
227  enc_cfg->rc_target_bitrate = arg_parse_uint(&arg);
228  } else if (arg_match(&arg, &skip_frames_arg, argi)) {
229  app_input->frames_to_skip = arg_parse_uint(&arg);
230  } else if (arg_match(&arg, &spatial_layers_arg, argi)) {
231  svc_ctx->spatial_layers = arg_parse_uint(&arg);
232  } else if (arg_match(&arg, &temporal_layers_arg, argi)) {
233  svc_ctx->temporal_layers = arg_parse_uint(&arg);
234 #if OUTPUT_RC_STATS
235  } else if (arg_match(&arg, &output_rc_stats_arg, argi)) {
236  svc_ctx->output_rc_stat = arg_parse_uint(&arg);
237 #endif
238  } else if (arg_match(&arg, &speed_arg, argi)) {
239  svc_ctx->speed = arg_parse_uint(&arg);
240  } else if (arg_match(&arg, &aqmode_arg, argi)) {
241  svc_ctx->aqmode = arg_parse_uint(&arg);
242  } else if (arg_match(&arg, &threads_arg, argi)) {
243  svc_ctx->threads = arg_parse_uint(&arg);
244  } else if (arg_match(&arg, &temporal_layering_mode_arg, argi)) {
245  svc_ctx->temporal_layering_mode = enc_cfg->temporal_layering_mode =
246  arg_parse_int(&arg);
247  if (svc_ctx->temporal_layering_mode) {
248  enc_cfg->g_error_resilient = 1;
249  }
250  } else if (arg_match(&arg, &kf_dist_arg, argi)) {
251  enc_cfg->kf_min_dist = arg_parse_uint(&arg);
252  enc_cfg->kf_max_dist = enc_cfg->kf_min_dist;
253  } else if (arg_match(&arg, &scale_factors_arg, argi)) {
254  snprintf(string_options, sizeof(string_options), "%s scale-factors=%s",
255  string_options, arg.val);
256  } else if (arg_match(&arg, &bitrates_arg, argi)) {
257  snprintf(string_options, sizeof(string_options), "%s bitrates=%s",
258  string_options, arg.val);
259  } else if (arg_match(&arg, &passes_arg, argi)) {
260  passes = arg_parse_uint(&arg);
261  if (passes < 1 || passes > 2) {
262  die("Error: Invalid number of passes (%d)\n", passes);
263  }
264  } else if (arg_match(&arg, &pass_arg, argi)) {
265  pass = arg_parse_uint(&arg);
266  if (pass < 1 || pass > 2) {
267  die("Error: Invalid pass selected (%d)\n", pass);
268  }
269  } else if (arg_match(&arg, &fpf_name_arg, argi)) {
270  fpf_file_name = arg.val;
271  } else if (arg_match(&arg, &min_q_arg, argi)) {
272  snprintf(string_options, sizeof(string_options), "%s min-quantizers=%s",
273  string_options, arg.val);
274  } else if (arg_match(&arg, &max_q_arg, argi)) {
275  snprintf(string_options, sizeof(string_options), "%s max-quantizers=%s",
276  string_options, arg.val);
277  } else if (arg_match(&arg, &min_bitrate_arg, argi)) {
278  min_bitrate = arg_parse_uint(&arg);
279  } else if (arg_match(&arg, &max_bitrate_arg, argi)) {
280  max_bitrate = arg_parse_uint(&arg);
281  } else if (arg_match(&arg, &lag_in_frame_arg, argi)) {
282  enc_cfg->g_lag_in_frames = arg_parse_uint(&arg);
283  } else if (arg_match(&arg, &rc_end_usage_arg, argi)) {
284  enc_cfg->rc_end_usage = arg_parse_uint(&arg);
285 #if CONFIG_VP9_HIGHBITDEPTH
286  } else if (arg_match(&arg, &bitdepth_arg, argi)) {
287  enc_cfg->g_bit_depth = arg_parse_enum_or_int(&arg);
288  switch (enc_cfg->g_bit_depth) {
289  case VPX_BITS_8:
290  enc_cfg->g_input_bit_depth = 8;
291  enc_cfg->g_profile = 0;
292  break;
293  case VPX_BITS_10:
294  enc_cfg->g_input_bit_depth = 10;
295  enc_cfg->g_profile = 2;
296  break;
297  case VPX_BITS_12:
298  enc_cfg->g_input_bit_depth = 12;
299  enc_cfg->g_profile = 2;
300  break;
301  default:
302  die("Error: Invalid bit depth selected (%d)\n", enc_cfg->g_bit_depth);
303  break;
304  }
305 #endif // CONFIG_VP9_HIGHBITDEPTH
306  } else {
307  ++argj;
308  }
309  }
310 
311  // There will be a space in front of the string options
312  if (strlen(string_options) > 0)
313  vpx_svc_set_options(svc_ctx, string_options + 1);
314 
315  if (passes == 0 || passes == 1) {
316  if (pass) {
317  fprintf(stderr, "pass is ignored since there's only one pass\n");
318  }
319  enc_cfg->g_pass = VPX_RC_ONE_PASS;
320  } else {
321  if (pass == 0) {
322  die("pass must be specified when passes is 2\n");
323  }
324 
325  if (fpf_file_name == NULL) {
326  die("fpf must be specified when passes is 2\n");
327  }
328 
329  if (pass == 1) {
330  enc_cfg->g_pass = VPX_RC_FIRST_PASS;
331  if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 0)) {
332  fatal("Failed to open statistics store");
333  }
334  } else {
335  enc_cfg->g_pass = VPX_RC_LAST_PASS;
336  if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 1)) {
337  fatal("Failed to open statistics store");
338  }
339  enc_cfg->rc_twopass_stats_in = stats_get(&app_input->rc_stats);
340  }
341  app_input->passes = passes;
342  app_input->pass = pass;
343  }
344 
345  if (enc_cfg->rc_target_bitrate > 0) {
346  if (min_bitrate > 0) {
347  enc_cfg->rc_2pass_vbr_minsection_pct =
348  min_bitrate * 100 / enc_cfg->rc_target_bitrate;
349  }
350  if (max_bitrate > 0) {
351  enc_cfg->rc_2pass_vbr_maxsection_pct =
352  max_bitrate * 100 / enc_cfg->rc_target_bitrate;
353  }
354  }
355 
356  // Check for unrecognized options
357  for (argi = argv; *argi; ++argi)
358  if (argi[0][0] == '-' && strlen(argi[0]) > 1)
359  die("Error: Unrecognized option %s\n", *argi);
360 
361  if (argv[0] == NULL || argv[1] == 0) {
362  usage_exit();
363  }
364  app_input->input_filename = argv[0];
365  app_input->output_filename = argv[1];
366  free(argv);
367 
368  if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 ||
369  enc_cfg->g_h % 2)
370  die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h);
371 
372  printf(
373  "Codec %s\nframes: %d, skip: %d\n"
374  "layers: %d\n"
375  "width %d, height: %d,\n"
376  "num: %d, den: %d, bitrate: %d,\n"
377  "gop size: %d\n",
378  vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code,
379  app_input->frames_to_skip, svc_ctx->spatial_layers, enc_cfg->g_w,
380  enc_cfg->g_h, enc_cfg->g_timebase.num, enc_cfg->g_timebase.den,
381  enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist);
382 }
383 
384 #if OUTPUT_RC_STATS
385 // For rate control encoding stats.
386 struct RateControlStats {
387  // Number of input frames per layer.
388  int layer_input_frames[VPX_MAX_LAYERS];
389  // Total (cumulative) number of encoded frames per layer.
390  int layer_tot_enc_frames[VPX_MAX_LAYERS];
391  // Number of encoded non-key frames per layer.
392  int layer_enc_frames[VPX_MAX_LAYERS];
393  // Framerate per layer (cumulative).
394  double layer_framerate[VPX_MAX_LAYERS];
395  // Target average frame size per layer (per-frame-bandwidth per layer).
396  double layer_pfb[VPX_MAX_LAYERS];
397  // Actual average frame size per layer.
398  double layer_avg_frame_size[VPX_MAX_LAYERS];
399  // Average rate mismatch per layer (|target - actual| / target).
400  double layer_avg_rate_mismatch[VPX_MAX_LAYERS];
401  // Actual encoding bitrate per layer (cumulative).
402  double layer_encoding_bitrate[VPX_MAX_LAYERS];
403  // Average of the short-time encoder actual bitrate.
404  // TODO(marpan): Should we add these short-time stats for each layer?
405  double avg_st_encoding_bitrate;
406  // Variance of the short-time encoder actual bitrate.
407  double variance_st_encoding_bitrate;
408  // Window (number of frames) for computing short-time encoding bitrate.
409  int window_size;
410  // Number of window measurements.
411  int window_count;
412 };
413 
414 // Note: these rate control stats assume only 1 key frame in the
415 // sequence (i.e., first frame only).
416 static void set_rate_control_stats(struct RateControlStats *rc,
417  vpx_codec_enc_cfg_t *cfg) {
418  unsigned int sl, tl;
419  // Set the layer (cumulative) framerate and the target layer (non-cumulative)
420  // per-frame-bandwidth, for the rate control encoding stats below.
421  const double framerate = cfg->g_timebase.den / cfg->g_timebase.num;
422 
423  for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
424  for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
425  const int layer = sl * cfg->ts_number_layers + tl;
426  if (cfg->ts_number_layers == 1)
427  rc->layer_framerate[layer] = framerate;
428  else
429  rc->layer_framerate[layer] = framerate / cfg->ts_rate_decimator[tl];
430  if (tl > 0) {
431  rc->layer_pfb[layer] =
432  1000.0 * (cfg->layer_target_bitrate[layer] -
433  cfg->layer_target_bitrate[layer - 1]) /
434  (rc->layer_framerate[layer] - rc->layer_framerate[layer - 1]);
435  } else {
436  rc->layer_pfb[layer] = 1000.0 * cfg->layer_target_bitrate[layer] /
437  rc->layer_framerate[layer];
438  }
439  rc->layer_input_frames[layer] = 0;
440  rc->layer_enc_frames[layer] = 0;
441  rc->layer_tot_enc_frames[layer] = 0;
442  rc->layer_encoding_bitrate[layer] = 0.0;
443  rc->layer_avg_frame_size[layer] = 0.0;
444  rc->layer_avg_rate_mismatch[layer] = 0.0;
445  }
446  }
447  rc->window_count = 0;
448  rc->window_size = 15;
449  rc->avg_st_encoding_bitrate = 0.0;
450  rc->variance_st_encoding_bitrate = 0.0;
451 }
452 
453 static void printout_rate_control_summary(struct RateControlStats *rc,
454  vpx_codec_enc_cfg_t *cfg,
455  int frame_cnt) {
456  unsigned int sl, tl;
457  double perc_fluctuation = 0.0;
458  int tot_num_frames = 0;
459  printf("Total number of processed frames: %d\n\n", frame_cnt - 1);
460  printf("Rate control layer stats for sl%d tl%d layer(s):\n\n",
462  for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
463  tot_num_frames = 0;
464  for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
465  const int layer = sl * cfg->ts_number_layers + tl;
466  const int num_dropped =
467  (tl > 0)
468  ? (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer])
469  : (rc->layer_input_frames[layer] - rc->layer_enc_frames[layer] -
470  1);
471  tot_num_frames += rc->layer_input_frames[layer];
472  rc->layer_encoding_bitrate[layer] = 0.001 * rc->layer_framerate[layer] *
473  rc->layer_encoding_bitrate[layer] /
474  tot_num_frames;
475  rc->layer_avg_frame_size[layer] =
476  rc->layer_avg_frame_size[layer] / rc->layer_enc_frames[layer];
477  rc->layer_avg_rate_mismatch[layer] = 100.0 *
478  rc->layer_avg_rate_mismatch[layer] /
479  rc->layer_enc_frames[layer];
480  printf("For layer#: sl%d tl%d \n", sl, tl);
481  printf("Bitrate (target vs actual): %d %f.0 kbps\n",
482  cfg->layer_target_bitrate[layer],
483  rc->layer_encoding_bitrate[layer]);
484  printf("Average frame size (target vs actual): %f %f bits\n",
485  rc->layer_pfb[layer], rc->layer_avg_frame_size[layer]);
486  printf("Average rate_mismatch: %f\n", rc->layer_avg_rate_mismatch[layer]);
487  printf(
488  "Number of input frames, encoded (non-key) frames, "
489  "and percent dropped frames: %d %d %f.0 \n",
490  rc->layer_input_frames[layer], rc->layer_enc_frames[layer],
491  100.0 * num_dropped / rc->layer_input_frames[layer]);
492  printf("\n");
493  }
494  }
495  rc->avg_st_encoding_bitrate = rc->avg_st_encoding_bitrate / rc->window_count;
496  rc->variance_st_encoding_bitrate =
497  rc->variance_st_encoding_bitrate / rc->window_count -
498  (rc->avg_st_encoding_bitrate * rc->avg_st_encoding_bitrate);
499  perc_fluctuation = 100.0 * sqrt(rc->variance_st_encoding_bitrate) /
500  rc->avg_st_encoding_bitrate;
501  printf("Short-time stats, for window of %d frames: \n", rc->window_size);
502  printf("Average, rms-variance, and percent-fluct: %f %f %f \n",
503  rc->avg_st_encoding_bitrate, sqrt(rc->variance_st_encoding_bitrate),
504  perc_fluctuation);
505  if (frame_cnt != tot_num_frames)
506  die("Error: Number of input frames not equal to output encoded frames != "
507  "%d tot_num_frames = %d\n",
508  frame_cnt, tot_num_frames);
509 }
510 
511 vpx_codec_err_t parse_superframe_index(const uint8_t *data, size_t data_sz,
512  uint64_t sizes[8], int *count) {
513  // A chunk ending with a byte matching 0xc0 is an invalid chunk unless
514  // it is a super frame index. If the last byte of real video compression
515  // data is 0xc0 the encoder must add a 0 byte. If we have the marker but
516  // not the associated matching marker byte at the front of the index we have
517  // an invalid bitstream and need to return an error.
518 
519  uint8_t marker;
520 
521  marker = *(data + data_sz - 1);
522  *count = 0;
523 
524  if ((marker & 0xe0) == 0xc0) {
525  const uint32_t frames = (marker & 0x7) + 1;
526  const uint32_t mag = ((marker >> 3) & 0x3) + 1;
527  const size_t index_sz = 2 + mag * frames;
528 
529  // This chunk is marked as having a superframe index but doesn't have
530  // enough data for it, thus it's an invalid superframe index.
531  if (data_sz < index_sz) return VPX_CODEC_CORRUPT_FRAME;
532 
533  {
534  const uint8_t marker2 = *(data + data_sz - index_sz);
535 
536  // This chunk is marked as having a superframe index but doesn't have
537  // the matching marker byte at the front of the index therefore it's an
538  // invalid chunk.
539  if (marker != marker2) return VPX_CODEC_CORRUPT_FRAME;
540  }
541 
542  {
543  // Found a valid superframe index.
544  uint32_t i, j;
545  const uint8_t *x = &data[data_sz - index_sz + 1];
546 
547  for (i = 0; i < frames; ++i) {
548  uint32_t this_sz = 0;
549 
550  for (j = 0; j < mag; ++j) this_sz |= (*x++) << (j * 8);
551  sizes[i] = this_sz;
552  }
553  *count = frames;
554  }
555  }
556  return VPX_CODEC_OK;
557 }
558 #endif
559 
560 // Example pattern for spatial layers and 2 temporal layers used in the
561 // bypass/flexible mode. The pattern corresponds to the pattern
562 // VP9E_TEMPORAL_LAYERING_MODE_0101 (temporal_layering_mode == 2) used in
563 // non-flexible mode.
564 void set_frame_flags_bypass_mode(int sl, int tl, int num_spatial_layers,
565  int is_key_frame,
566  vpx_svc_ref_frame_config_t *ref_frame_config) {
567  for (sl = 0; sl < num_spatial_layers; ++sl) {
568  if (!tl) {
569  if (!sl) {
570  ref_frame_config->frame_flags[sl] =
573  } else {
574  if (is_key_frame) {
575  ref_frame_config->frame_flags[sl] =
578  } else {
579  ref_frame_config->frame_flags[sl] =
581  }
582  }
583  } else if (tl == 1) {
584  if (!sl) {
585  ref_frame_config->frame_flags[sl] =
588  } else {
589  ref_frame_config->frame_flags[sl] =
591  }
592  }
593  if (tl == 0) {
594  ref_frame_config->lst_fb_idx[sl] = sl;
595  if (sl)
596  ref_frame_config->gld_fb_idx[sl] = sl - 1;
597  else
598  ref_frame_config->gld_fb_idx[sl] = 0;
599  ref_frame_config->alt_fb_idx[sl] = 0;
600  } else if (tl == 1) {
601  ref_frame_config->lst_fb_idx[sl] = sl;
602  ref_frame_config->gld_fb_idx[sl] = num_spatial_layers + sl - 1;
603  ref_frame_config->alt_fb_idx[sl] = num_spatial_layers + sl;
604  }
605  }
606 }
607 
608 int main(int argc, const char **argv) {
609  AppInput app_input;
610  VpxVideoWriter *writer = NULL;
611  VpxVideoInfo info;
612  vpx_codec_ctx_t codec;
613  vpx_codec_enc_cfg_t enc_cfg;
614  SvcContext svc_ctx;
615  uint32_t i;
616  uint32_t frame_cnt = 0;
617  vpx_image_t raw;
618  vpx_codec_err_t res;
619  int pts = 0; /* PTS starts at 0 */
620  int frame_duration = 1; /* 1 timebase tick per frame */
621  FILE *infile = NULL;
622  int end_of_stream = 0;
623  int frames_received = 0;
624 #if OUTPUT_RC_STATS
625  VpxVideoWriter *outfile[VPX_TS_MAX_LAYERS] = { NULL };
626  struct RateControlStats rc;
627  vpx_svc_layer_id_t layer_id;
628  vpx_svc_ref_frame_config_t ref_frame_config;
629  unsigned int sl, tl;
630  double sum_bitrate = 0.0;
631  double sum_bitrate2 = 0.0;
632  double framerate = 30.0;
633 #endif
634  struct vpx_usec_timer timer;
635  int64_t cx_time = 0;
636  memset(&svc_ctx, 0, sizeof(svc_ctx));
637  svc_ctx.log_print = 1;
638  exec_name = argv[0];
639  parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg);
640 
641 // Allocate image buffer
642 #if CONFIG_VP9_HIGHBITDEPTH
643  if (!vpx_img_alloc(&raw,
644  enc_cfg.g_input_bit_depth == 8 ? VPX_IMG_FMT_I420
646  enc_cfg.g_w, enc_cfg.g_h, 32)) {
647  die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
648  }
649 #else
650  if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32)) {
651  die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
652  }
653 #endif // CONFIG_VP9_HIGHBITDEPTH
654 
655  if (!(infile = fopen(app_input.input_filename, "rb")))
656  die("Failed to open %s for reading\n", app_input.input_filename);
657 
658  // Initialize codec
659  if (vpx_svc_init(&svc_ctx, &codec, vpx_codec_vp9_cx(), &enc_cfg) !=
660  VPX_CODEC_OK)
661  die("Failed to initialize encoder\n");
662 
663 #if OUTPUT_RC_STATS
664  if (svc_ctx.output_rc_stat) {
665  set_rate_control_stats(&rc, &enc_cfg);
666  framerate = enc_cfg.g_timebase.den / enc_cfg.g_timebase.num;
667  }
668 #endif
669 
670  info.codec_fourcc = VP9_FOURCC;
671  info.time_base.numerator = enc_cfg.g_timebase.num;
672  info.time_base.denominator = enc_cfg.g_timebase.den;
673 
674  if (!(app_input.passes == 2 && app_input.pass == 1)) {
675  // We don't save the bitstream for the 1st pass on two pass rate control
676  writer =
677  vpx_video_writer_open(app_input.output_filename, kContainerIVF, &info);
678  if (!writer)
679  die("Failed to open %s for writing\n", app_input.output_filename);
680  }
681 #if OUTPUT_RC_STATS
682  // For now, just write temporal layer streams.
683  // TODO(marpan): do spatial by re-writing superframe.
684  if (svc_ctx.output_rc_stat) {
685  for (tl = 0; tl < enc_cfg.ts_number_layers; ++tl) {
686  char file_name[PATH_MAX];
687 
688  snprintf(file_name, sizeof(file_name), "%s_t%d.ivf",
689  app_input.output_filename, tl);
690  outfile[tl] = vpx_video_writer_open(file_name, kContainerIVF, &info);
691  if (!outfile[tl]) die("Failed to open %s for writing", file_name);
692  }
693  }
694 #endif
695 
696  // skip initial frames
697  for (i = 0; i < app_input.frames_to_skip; ++i) vpx_img_read(&raw, infile);
698 
699  if (svc_ctx.speed != -1)
700  vpx_codec_control(&codec, VP8E_SET_CPUUSED, svc_ctx.speed);
701  if (svc_ctx.threads) {
702  vpx_codec_control(&codec, VP9E_SET_TILE_COLUMNS, (svc_ctx.threads >> 1));
703  if (svc_ctx.threads > 1)
705  else
707  }
708  if (svc_ctx.speed >= 5 && svc_ctx.aqmode == 1)
710  if (svc_ctx.speed >= 5)
713 
714  // Encode frames
715  while (!end_of_stream) {
716  vpx_codec_iter_t iter = NULL;
717  const vpx_codec_cx_pkt_t *cx_pkt;
718  if (frame_cnt >= app_input.frames_to_code || !vpx_img_read(&raw, infile)) {
719  // We need one extra vpx_svc_encode call at end of stream to flush
720  // encoder and get remaining data
721  end_of_stream = 1;
722  }
723 
724  // For BYPASS/FLEXIBLE mode, set the frame flags (reference and updates)
725  // and the buffer indices for each spatial layer of the current
726  // (super)frame to be encoded. The temporal layer_id for the current frame
727  // also needs to be set.
728  // TODO(marpan): Should rename the "VP9E_TEMPORAL_LAYERING_MODE_BYPASS"
729  // mode to "VP9E_LAYERING_MODE_BYPASS".
730  if (svc_ctx.temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_BYPASS) {
731  layer_id.spatial_layer_id = 0;
732  // Example for 2 temporal layers.
733  if (frame_cnt % 2 == 0)
734  layer_id.temporal_layer_id = 0;
735  else
736  layer_id.temporal_layer_id = 1;
737  // Note that we only set the temporal layer_id, since we are calling
738  // the encode for the whole superframe. The encoder will internally loop
739  // over all the spatial layers for the current superframe.
740  vpx_codec_control(&codec, VP9E_SET_SVC_LAYER_ID, &layer_id);
741  set_frame_flags_bypass_mode(sl, layer_id.temporal_layer_id,
742  svc_ctx.spatial_layers, frame_cnt == 0,
743  &ref_frame_config);
745  &ref_frame_config);
746  // Keep track of input frames, to account for frame drops in rate control
747  // stats/metrics.
748  for (sl = 0; sl < (unsigned int)enc_cfg.ss_number_layers; ++sl) {
749  ++rc.layer_input_frames[sl * enc_cfg.ts_number_layers +
750  layer_id.temporal_layer_id];
751  }
752  }
753 
754  vpx_usec_timer_start(&timer);
755  res = vpx_svc_encode(
756  &svc_ctx, &codec, (end_of_stream ? NULL : &raw), pts, frame_duration,
757  svc_ctx.speed >= 5 ? VPX_DL_REALTIME : VPX_DL_GOOD_QUALITY);
758  vpx_usec_timer_mark(&timer);
759  cx_time += vpx_usec_timer_elapsed(&timer);
760 
761  printf("%s", vpx_svc_get_message(&svc_ctx));
762  fflush(stdout);
763  if (res != VPX_CODEC_OK) {
764  die_codec(&codec, "Failed to encode frame");
765  }
766 
767  while ((cx_pkt = vpx_codec_get_cx_data(&codec, &iter)) != NULL) {
768  switch (cx_pkt->kind) {
769  case VPX_CODEC_CX_FRAME_PKT: {
770  SvcInternal_t *const si = (SvcInternal_t *)svc_ctx.internal;
771  if (cx_pkt->data.frame.sz > 0) {
772 #if OUTPUT_RC_STATS
773  uint64_t sizes[8];
774  int count = 0;
775 #endif
776  vpx_video_writer_write_frame(writer, cx_pkt->data.frame.buf,
777  cx_pkt->data.frame.sz,
778  cx_pkt->data.frame.pts);
779 #if OUTPUT_RC_STATS
780  // TODO(marpan): Put this (to line728) in separate function.
781  if (svc_ctx.output_rc_stat) {
782  vpx_codec_control(&codec, VP9E_GET_SVC_LAYER_ID, &layer_id);
783  parse_superframe_index(cx_pkt->data.frame.buf,
784  cx_pkt->data.frame.sz, sizes, &count);
785  if (enc_cfg.ss_number_layers == 1)
786  sizes[0] = cx_pkt->data.frame.sz;
787  // Note computing input_layer_frames here won't account for frame
788  // drops in rate control stats.
789  // TODO(marpan): Fix this for non-bypass mode so we can get stats
790  // for dropped frames.
791  if (svc_ctx.temporal_layering_mode !=
793  for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
794  ++rc.layer_input_frames[sl * enc_cfg.ts_number_layers +
795  layer_id.temporal_layer_id];
796  }
797  }
798  for (tl = layer_id.temporal_layer_id;
799  tl < enc_cfg.ts_number_layers; ++tl) {
800  vpx_video_writer_write_frame(
801  outfile[tl], cx_pkt->data.frame.buf, cx_pkt->data.frame.sz,
802  cx_pkt->data.frame.pts);
803  }
804 
805  for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
806  for (tl = layer_id.temporal_layer_id;
807  tl < enc_cfg.ts_number_layers; ++tl) {
808  const int layer = sl * enc_cfg.ts_number_layers + tl;
809  ++rc.layer_tot_enc_frames[layer];
810  rc.layer_encoding_bitrate[layer] += 8.0 * sizes[sl];
811  // Keep count of rate control stats per layer, for non-key
812  // frames.
813  if (tl == (unsigned int)layer_id.temporal_layer_id &&
814  !(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY)) {
815  rc.layer_avg_frame_size[layer] += 8.0 * sizes[sl];
816  rc.layer_avg_rate_mismatch[layer] +=
817  fabs(8.0 * sizes[sl] - rc.layer_pfb[layer]) /
818  rc.layer_pfb[layer];
819  ++rc.layer_enc_frames[layer];
820  }
821  }
822  }
823 
824  // Update for short-time encoding bitrate states, for moving
825  // window of size rc->window, shifted by rc->window / 2.
826  // Ignore first window segment, due to key frame.
827  if (frame_cnt > (unsigned int)rc.window_size) {
828  tl = layer_id.temporal_layer_id;
829  for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
830  sum_bitrate += 0.001 * 8.0 * sizes[sl] * framerate;
831  }
832  if (frame_cnt % rc.window_size == 0) {
833  rc.window_count += 1;
834  rc.avg_st_encoding_bitrate += sum_bitrate / rc.window_size;
835  rc.variance_st_encoding_bitrate +=
836  (sum_bitrate / rc.window_size) *
837  (sum_bitrate / rc.window_size);
838  sum_bitrate = 0.0;
839  }
840  }
841 
842  // Second shifted window.
843  if (frame_cnt >
844  (unsigned int)(rc.window_size + rc.window_size / 2)) {
845  tl = layer_id.temporal_layer_id;
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) *
856  (sum_bitrate2 / rc.window_size);
857  sum_bitrate2 = 0.0;
858  }
859  }
860  }
861 #endif
862  }
863  /*
864  printf("SVC frame: %d, kf: %d, size: %d, pts: %d\n", frames_received,
865  !!(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY),
866  (int)cx_pkt->data.frame.sz, (int)cx_pkt->data.frame.pts);
867  */
868  if (enc_cfg.ss_number_layers == 1 && enc_cfg.ts_number_layers == 1)
869  si->bytes_sum[0] += (int)cx_pkt->data.frame.sz;
870  ++frames_received;
871  break;
872  }
873  case VPX_CODEC_STATS_PKT: {
874  stats_write(&app_input.rc_stats, cx_pkt->data.twopass_stats.buf,
875  cx_pkt->data.twopass_stats.sz);
876  break;
877  }
878  default: { break; }
879  }
880  }
881 
882  if (!end_of_stream) {
883  ++frame_cnt;
884  pts += frame_duration;
885  }
886  }
887 
888  // Compensate for the extra frame count for the bypass mode.
889  if (svc_ctx.temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_BYPASS) {
890  for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
891  const int layer =
892  sl * enc_cfg.ts_number_layers + layer_id.temporal_layer_id;
893  --rc.layer_input_frames[layer];
894  }
895  }
896 
897  printf("Processed %d frames\n", frame_cnt);
898  fclose(infile);
899 #if OUTPUT_RC_STATS
900  if (svc_ctx.output_rc_stat) {
901  printout_rate_control_summary(&rc, &enc_cfg, frame_cnt);
902  printf("\n");
903  }
904 #endif
905  if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec");
906  if (app_input.passes == 2) stats_close(&app_input.rc_stats, 1);
907  if (writer) {
908  vpx_video_writer_close(writer);
909  }
910 #if OUTPUT_RC_STATS
911  if (svc_ctx.output_rc_stat) {
912  for (tl = 0; tl < enc_cfg.ts_number_layers; ++tl) {
913  vpx_video_writer_close(outfile[tl]);
914  }
915  }
916 #endif
917  printf("Frame cnt and encoding time/FPS stats for encoding: %d %f %f \n",
918  frame_cnt, 1000 * (float)cx_time / (double)(frame_cnt * 1000000),
919  1000000 * (double)frame_cnt / (double)cx_time);
920  vpx_img_free(&raw);
921  // display average size, psnr
922  printf("%s", vpx_svc_dump_statistics(&svc_ctx));
923  vpx_svc_release(&svc_ctx);
924  return EXIT_SUCCESS;
925 }
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:589
vpx_svc_ref_frame_config::alt_fb_idx
int alt_fb_idx[5]
Definition: vp8cx.h:735
vpx_svc_ref_frame_config::gld_fb_idx
int gld_fb_idx[5]
Definition: vp8cx.h:734
vpx_svc_ref_frame_config::lst_fb_idx
int lst_fb_idx[5]
Definition: vp8cx.h:733
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:677
vpx_codec_ctx
Codec context structure.
Definition: vpx_codec.h:197
VPX_BITS_8
@ VPX_BITS_8
Definition: vpx_codec.h:218
vpx_codec_err_to_string
const char * vpx_codec_err_to_string(vpx_codec_err_t err)
Convert error number to printable string.
VP9E_SET_AQ_MODE
@ VP9E_SET_AQ_MODE
Codec control function to set adaptive quantization mode.
Definition: vp8cx.h:392
vpx_codec_cx_pkt::kind
enum vpx_codec_cx_pkt_kind kind
Definition: vpx_encoder.h:171
VP9E_GET_SVC_LAYER_ID
@ VP9E_GET_SVC_LAYER_ID
Codec control function to get svc layer ID.
Definition: vp8cx.h:459
vpx_img_free
void vpx_img_free(vpx_image_t *img)
Close an image descriptor.
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:628
vpx_codec_enc_cfg::ss_number_layers
unsigned int ss_number_layers
Number of spatial coding layers.
Definition: vpx_encoder.h:643
vpx_codec_cx_pkt::data
union vpx_codec_cx_pkt::@1 data
VP8_EFLAG_NO_REF_LAST
#define VP8_EFLAG_NO_REF_LAST
Don't reference the last frame.
Definition: vp8cx.h:58
vpx_codec_enc_cfg::rc_twopass_stats_in
vpx_fixed_buf_t rc_twopass_stats_in
Two-pass stats buffer.
Definition: vpx_encoder.h:464
vpx_codec_enc_cfg
Encoder configuration structure.
Definition: vpx_encoder.h:279
vpx_codec_enc_cfg::kf_max_dist
unsigned int kf_max_dist
Keyframe maximum interval.
Definition: vpx_encoder.h:633
vpx_codec_iface_name
const char * vpx_codec_iface_name(vpx_codec_iface_t *iface)
Return the name for a given interface.
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_rational::num
int num
Definition: vpx_encoder.h:230
VPX_DL_REALTIME
#define VPX_DL_REALTIME
deadline parameter analogous to VPx REALTIME mode.
Definition: vpx_encoder.h:849
VPX_CODEC_OK
@ VPX_CODEC_OK
Operation completed without error.
Definition: vpx_codec.h:92
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
Encoder output packet.
Definition: vpx_encoder.h:170
vpx_svc_ref_frame_config::frame_flags
int frame_flags[5]
Definition: vp8cx.h:732
vpx_codec_iter_t
const typedef void * vpx_codec_iter_t
Iterator.
Definition: vpx_codec.h:187
vpx_codec_enc_cfg::g_w
unsigned int g_w
Width of the frame.
Definition: vpx_encoder.h:318
VPX_CODEC_CX_FRAME_PKT
@ VPX_CODEC_CX_FRAME_PKT
Definition: vpx_encoder.h:153
vpx_svc_ref_frame_config
vp9 svc frame flag parameters.
Definition: vp8cx.h:731
VPX_TS_MAX_LAYERS
#define VPX_TS_MAX_LAYERS
Definition: vpx_encoder.h:40
vpx_codec_enc_cfg::g_profile
unsigned int g_profile
Bitstream profile to use.
Definition: vpx_encoder.h:309
VPX_BITS_12
@ VPX_BITS_12
Definition: vpx_codec.h:220
VP8_EFLAG_NO_UPD_LAST
#define VP8_EFLAG_NO_UPD_LAST
Don't update the last frame.
Definition: vp8cx.h:81
VPX_MAX_LAYERS
#define VPX_MAX_LAYERS
Definition: vpx_encoder.h:46
VPX_CODEC_STATS_PKT
@ VPX_CODEC_STATS_PKT
Definition: vpx_encoder.h:154
VPX_RC_LAST_PASS
@ VPX_RC_LAST_PASS
Definition: vpx_encoder.h:238
VP8E_SET_STATIC_THRESHOLD
@ VP8E_SET_STATIC_THRESHOLD
Codec control function to set the threshold for MBs treated static.
Definition: vp8cx.h:182
vpx_codec_enc_cfg::g_bit_depth
vpx_bit_depth_t g_bit_depth
Bit-depth of the codec.
Definition: vpx_encoder.h:335
vpx_codec_enc_cfg::g_timebase
struct vpx_rational g_timebase
Stream timebase units.
Definition: vpx_encoder.h:357
VPX_IMG_FMT_I420
@ VPX_IMG_FMT_I420
Definition: vpx_image.h:55
VPX_CODEC_CORRUPT_FRAME
@ VPX_CODEC_CORRUPT_FRAME
The coded data for this stream is corrupt or incomplete.
Definition: vpx_codec.h:130
vpx_codec_enc_cfg::g_error_resilient
vpx_codec_er_flags_t g_error_resilient
Enable error resilient modes.
Definition: vpx_encoder.h:365
vpx_image
Image Descriptor.
Definition: vpx_image.h:88
vpx_codec_enc_cfg::g_pass
enum vpx_enc_pass g_pass
Multi-pass Encoding Mode.
Definition: vpx_encoder.h:372
vpx_codec_enc_cfg::g_h
unsigned int g_h
Height of the frame.
Definition: vpx_encoder.h:327
VP9E_SET_SVC_LAYER_ID
@ VP9E_SET_SVC_LAYER_ID
Codec control function to set svc layer for spatial and temporal.
Definition: vp8cx.h:441
vpx_codec_enc_cfg::rc_end_usage
enum vpx_rc_mode rc_end_usage
Rate control algorithm to use.
Definition: vpx_encoder.h:457
vpx_codec_enc_cfg::g_lag_in_frames
unsigned int g_lag_in_frames
Allow lagged encoding.
Definition: vpx_encoder.h:386
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.
VP8E_SET_CPUUSED
@ VP8E_SET_CPUUSED
Codec control function to set encoder internal speed settings.
Definition: vp8cx.h:155
vpx_codec_err_t
vpx_codec_err_t
Algorithm return codes.
Definition: vpx_codec.h:90
VP8_EFLAG_NO_REF_ARF
#define VP8_EFLAG_NO_REF_ARF
Don't reference the alternate reference frame.
Definition: vp8cx.h:74
vpx_svc_layer_id
vp9 svc layer parameters
Definition: vp8cx.h:718
vpx_codec_enc_cfg::layer_target_bitrate
unsigned int layer_target_bitrate[12]
Target bitrate for each spatial/temporal layer.
Definition: vpx_encoder.h:703
vpx_codec_enc_cfg::g_input_bit_depth
unsigned int g_input_bit_depth
Bit-depth of the input frames.
Definition: vpx_encoder.h:343
VPX_CQ
@ VPX_CQ
Definition: vpx_encoder.h:245
VPX_RC_FIRST_PASS
@ VPX_RC_FIRST_PASS
Definition: vpx_encoder.h:237
VPX_IMG_FMT_I42016
@ VPX_IMG_FMT_I42016
Definition: vpx_image.h:63
VPX_FRAME_IS_KEY
#define VPX_FRAME_IS_KEY
Definition: vpx_encoder.h:122
vp8cx.h
Provides definitions for using VP8 or VP9 encoder algorithm within the vpx Codec Interface.
vpx_codec_enc_cfg::kf_min_dist
unsigned int kf_min_dist
Keyframe minimum interval.
Definition: vpx_encoder.h:624
vpx_fixed_buf::sz
size_t sz
Definition: vpx_encoder.h:104
VPX_BITS_10
@ VPX_BITS_10
Definition: vpx_codec.h:219
VP9E_SET_ROW_MT
@ VP9E_SET_ROW_MT
Codec control function to set row level multi-threading.
Definition: vp8cx.h:558
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:251
vpx_codec_enc_cfg::rc_target_bitrate
unsigned int rc_target_bitrate
Target data rate.
Definition: vpx_encoder.h:477
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:596
VP9E_SET_TILE_COLUMNS
@ VP9E_SET_TILE_COLUMNS
Codec control function to set number of tile columns.
Definition: vp8cx.h:345
vpx_fixed_buf::buf
void * buf
Definition: vpx_encoder.h:103
vpx_codec_cx_pkt::twopass_stats
vpx_fixed_buf_t twopass_stats
Definition: vpx_encoder.h:186
VP8_EFLAG_NO_REF_GF
#define VP8_EFLAG_NO_REF_GF
Don't reference the golden frame.
Definition: vp8cx.h:66
vpx_codec_control
#define vpx_codec_control(ctx, id, data)
vpx_codec_control wrapper macro
Definition: vpx_codec.h:404
VP8_EFLAG_NO_UPD_ARF
#define VP8_EFLAG_NO_UPD_ARF
Don't update the alternate reference frame.
Definition: vp8cx.h:95
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:533
vpx_codec_cx_pkt::frame
struct vpx_codec_cx_pkt::@1::@2 frame
vpx_rational::den
int den
Definition: vpx_encoder.h:231
vpx_codec_destroy
vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx)
Destroy a codec instance.
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:712
VP8_EFLAG_NO_UPD_GF
#define VP8_EFLAG_NO_UPD_GF
Don't update the golden frame.
Definition: vp8cx.h:88
vpx_encoder.h
Describes the encoder algorithm interface to applications.
VPX_RC_ONE_PASS
@ VPX_RC_ONE_PASS
Definition: vpx_encoder.h:236
VPX_DL_GOOD_QUALITY
#define VPX_DL_GOOD_QUALITY
deadline parameter analogous to VPx GOOD QUALITY mode.
Definition: vpx_encoder.h:851
vpx_codec_enc_cfg::ts_number_layers
unsigned int ts_number_layers
Number of temporal coding layers.
Definition: vpx_encoder.h:663