WebM Codec SDK
vpxdec
1 /*
2  * Copyright (c) 2010 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 #include <assert.h>
12 #include <stdio.h>
13 #include <stdlib.h>
14 #include <stdarg.h>
15 #include <string.h>
16 #include <limits.h>
17 
18 #include "./vpx_config.h"
19 
20 #if CONFIG_LIBYUV
21 #include "third_party/libyuv/include/libyuv/scale.h"
22 #endif
23 
24 #include "./args.h"
25 #include "./ivfdec.h"
26 
27 #include "vpx/vpx_decoder.h"
28 #include "vpx_ports/mem_ops.h"
29 #include "vpx_ports/vpx_timer.h"
30 
31 #if CONFIG_VP8_DECODER || CONFIG_VP9_DECODER
32 #include "vpx/vp8dx.h"
33 #endif
34 
35 #include "./md5_utils.h"
36 
37 #include "./tools_common.h"
38 #if CONFIG_WEBM_IO
39 #include "./webmdec.h"
40 #endif
41 #include "./y4menc.h"
42 
43 static const char *exec_name;
44 
45 struct VpxDecInputContext {
46  struct VpxInputContext *vpx_input_ctx;
47  struct WebmInputContext *webm_ctx;
48 };
49 
50 static const arg_def_t looparg = ARG_DEF(
51  NULL, "loops", 1, "Number of times to decode the file");
52 static const arg_def_t codecarg = ARG_DEF(
53  NULL, "codec", 1, "Codec to use");
54 static const arg_def_t use_yv12 = ARG_DEF(
55  NULL, "yv12", 0, "Output raw YV12 frames");
56 static const arg_def_t use_i420 = ARG_DEF(
57  NULL, "i420", 0, "Output raw I420 frames");
58 static const arg_def_t flipuvarg = ARG_DEF(
59  NULL, "flipuv", 0, "Flip the chroma planes in the output");
60 static const arg_def_t rawvideo = ARG_DEF(
61  NULL, "rawvideo", 0, "Output raw YUV frames");
62 static const arg_def_t noblitarg = ARG_DEF(
63  NULL, "noblit", 0, "Don't process the decoded frames");
64 static const arg_def_t progressarg = ARG_DEF(
65  NULL, "progress", 0, "Show progress after each frame decodes");
66 static const arg_def_t limitarg = ARG_DEF(
67  NULL, "limit", 1, "Stop decoding after n frames");
68 static const arg_def_t skiparg = ARG_DEF(
69  NULL, "skip", 1, "Skip the first n input frames");
70 static const arg_def_t postprocarg = ARG_DEF(
71  NULL, "postproc", 0, "Postprocess decoded frames");
72 static const arg_def_t summaryarg = ARG_DEF(
73  NULL, "summary", 0, "Show timing summary");
74 static const arg_def_t outputfile = ARG_DEF(
75  "o", "output", 1, "Output file name pattern (see below)");
76 static const arg_def_t threadsarg = ARG_DEF(
77  "t", "threads", 1, "Max threads to use");
78 static const arg_def_t frameparallelarg = ARG_DEF(
79  NULL, "frame-parallel", 0, "Frame parallel decode");
80 static const arg_def_t verbosearg = ARG_DEF(
81  "v", "verbose", 0, "Show version string");
82 static const arg_def_t error_concealment = ARG_DEF(
83  NULL, "error-concealment", 0, "Enable decoder error-concealment");
84 static const arg_def_t scalearg = ARG_DEF(
85  "S", "scale", 0, "Scale output frames uniformly");
86 static const arg_def_t continuearg = ARG_DEF(
87  "k", "keep-going", 0, "(debug) Continue decoding after error");
88 static const arg_def_t fb_arg = ARG_DEF(
89  NULL, "frame-buffers", 1, "Number of frame buffers to use");
90 static const arg_def_t md5arg = ARG_DEF(
91  NULL, "md5", 0, "Compute the MD5 sum of the decoded frame");
92 #if CONFIG_VP9_HIGHBITDEPTH
93 static const arg_def_t outbitdeptharg = ARG_DEF(
94  NULL, "output-bit-depth", 1, "Output bit-depth for decoded frames");
95 #endif
96 
97 static const arg_def_t *all_args[] = {
98  &codecarg, &use_yv12, &use_i420, &flipuvarg, &rawvideo, &noblitarg,
99  &progressarg, &limitarg, &skiparg, &postprocarg, &summaryarg, &outputfile,
100  &threadsarg, &frameparallelarg, &verbosearg, &scalearg, &fb_arg,
101  &md5arg, &error_concealment, &continuearg,
102 #if CONFIG_VP9_HIGHBITDEPTH
103  &outbitdeptharg,
104 #endif
105  NULL
106 };
107 
108 #if CONFIG_VP8_DECODER
109 static const arg_def_t addnoise_level = ARG_DEF(
110  NULL, "noise-level", 1, "Enable VP8 postproc add noise");
111 static const arg_def_t deblock = ARG_DEF(
112  NULL, "deblock", 0, "Enable VP8 deblocking");
113 static const arg_def_t demacroblock_level = ARG_DEF(
114  NULL, "demacroblock-level", 1, "Enable VP8 demacroblocking, w/ level");
115 static const arg_def_t pp_debug_info = ARG_DEF(
116  NULL, "pp-debug-info", 1, "Enable VP8 visible debug info");
117 static const arg_def_t pp_disp_ref_frame = ARG_DEF(
118  NULL, "pp-dbg-ref-frame", 1,
119  "Display only selected reference frame per macro block");
120 static const arg_def_t pp_disp_mb_modes = ARG_DEF(
121  NULL, "pp-dbg-mb-modes", 1, "Display only selected macro block modes");
122 static const arg_def_t pp_disp_b_modes = ARG_DEF(
123  NULL, "pp-dbg-b-modes", 1, "Display only selected block modes");
124 static const arg_def_t pp_disp_mvs = ARG_DEF(
125  NULL, "pp-dbg-mvs", 1, "Draw only selected motion vectors");
126 static const arg_def_t mfqe = ARG_DEF(
127  NULL, "mfqe", 0, "Enable multiframe quality enhancement");
128 
129 static const arg_def_t *vp8_pp_args[] = {
130  &addnoise_level, &deblock, &demacroblock_level, &pp_debug_info,
131  &pp_disp_ref_frame, &pp_disp_mb_modes, &pp_disp_b_modes, &pp_disp_mvs, &mfqe,
132  NULL
133 };
134 #endif
135 
136 #if CONFIG_LIBYUV
137 static INLINE int libyuv_scale(vpx_image_t *src, vpx_image_t *dst,
138  FilterModeEnum mode) {
139 #if CONFIG_VP9_HIGHBITDEPTH
140  if (src->fmt == VPX_IMG_FMT_I42016) {
141  assert(dst->fmt == VPX_IMG_FMT_I42016);
142  return I420Scale_16((uint16_t*)src->planes[VPX_PLANE_Y],
143  src->stride[VPX_PLANE_Y]/2,
144  (uint16_t*)src->planes[VPX_PLANE_U],
145  src->stride[VPX_PLANE_U]/2,
146  (uint16_t*)src->planes[VPX_PLANE_V],
147  src->stride[VPX_PLANE_V]/2,
148  src->d_w, src->d_h,
149  (uint16_t*)dst->planes[VPX_PLANE_Y],
150  dst->stride[VPX_PLANE_Y]/2,
151  (uint16_t*)dst->planes[VPX_PLANE_U],
152  dst->stride[VPX_PLANE_U]/2,
153  (uint16_t*)dst->planes[VPX_PLANE_V],
154  dst->stride[VPX_PLANE_V]/2,
155  dst->d_w, dst->d_h,
156  mode);
157  }
158 #endif
159  assert(src->fmt == VPX_IMG_FMT_I420);
160  assert(dst->fmt == VPX_IMG_FMT_I420);
161  return I420Scale(src->planes[VPX_PLANE_Y], src->stride[VPX_PLANE_Y],
162  src->planes[VPX_PLANE_U], src->stride[VPX_PLANE_U],
163  src->planes[VPX_PLANE_V], src->stride[VPX_PLANE_V],
164  src->d_w, src->d_h,
165  dst->planes[VPX_PLANE_Y], dst->stride[VPX_PLANE_Y],
166  dst->planes[VPX_PLANE_U], dst->stride[VPX_PLANE_U],
167  dst->planes[VPX_PLANE_V], dst->stride[VPX_PLANE_V],
168  dst->d_w, dst->d_h,
169  mode);
170 }
171 #endif
172 
173 void usage_exit(void) {
174  int i;
175 
176  fprintf(stderr, "Usage: %s <options> filename\n\n"
177  "Options:\n", exec_name);
178  arg_show_usage(stderr, all_args);
179 #if CONFIG_VP8_DECODER
180  fprintf(stderr, "\nVP8 Postprocessing Options:\n");
181  arg_show_usage(stderr, vp8_pp_args);
182 #endif
183  fprintf(stderr,
184  "\nOutput File Patterns:\n\n"
185  " The -o argument specifies the name of the file(s) to "
186  "write to. If the\n argument does not include any escape "
187  "characters, the output will be\n written to a single file. "
188  "Otherwise, the filename will be calculated by\n expanding "
189  "the following escape characters:\n");
190  fprintf(stderr,
191  "\n\t%%w - Frame width"
192  "\n\t%%h - Frame height"
193  "\n\t%%<n> - Frame number, zero padded to <n> places (1..9)"
194  "\n\n Pattern arguments are only supported in conjunction "
195  "with the --yv12 and\n --i420 options. If the -o option is "
196  "not specified, the output will be\n directed to stdout.\n"
197  );
198  fprintf(stderr, "\nIncluded decoders:\n\n");
199 
200  for (i = 0; i < get_vpx_decoder_count(); ++i) {
201  const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
202  fprintf(stderr, " %-6s - %s\n",
203  decoder->name, vpx_codec_iface_name(decoder->codec_interface()));
204  }
205 
206  exit(EXIT_FAILURE);
207 }
208 
209 static int raw_read_frame(FILE *infile, uint8_t **buffer,
210  size_t *bytes_read, size_t *buffer_size) {
211  char raw_hdr[RAW_FRAME_HDR_SZ];
212  size_t frame_size = 0;
213 
214  if (fread(raw_hdr, RAW_FRAME_HDR_SZ, 1, infile) != 1) {
215  if (!feof(infile))
216  warn("Failed to read RAW frame size\n");
217  } else {
218  const size_t kCorruptFrameThreshold = 256 * 1024 * 1024;
219  const size_t kFrameTooSmallThreshold = 256 * 1024;
220  frame_size = mem_get_le32(raw_hdr);
221 
222  if (frame_size > kCorruptFrameThreshold) {
223  warn("Read invalid frame size (%u)\n", (unsigned int)frame_size);
224  frame_size = 0;
225  }
226 
227  if (frame_size < kFrameTooSmallThreshold) {
228  warn("Warning: Read invalid frame size (%u) - not a raw file?\n",
229  (unsigned int)frame_size);
230  }
231 
232  if (frame_size > *buffer_size) {
233  uint8_t *new_buf = realloc(*buffer, 2 * frame_size);
234  if (new_buf) {
235  *buffer = new_buf;
236  *buffer_size = 2 * frame_size;
237  } else {
238  warn("Failed to allocate compressed data buffer\n");
239  frame_size = 0;
240  }
241  }
242  }
243 
244  if (!feof(infile)) {
245  if (fread(*buffer, 1, frame_size, infile) != frame_size) {
246  warn("Failed to read full frame\n");
247  return 1;
248  }
249  *bytes_read = frame_size;
250  }
251 
252  return 0;
253 }
254 
255 static int read_frame(struct VpxDecInputContext *input, uint8_t **buf,
256  size_t *bytes_in_buffer, size_t *buffer_size) {
257  switch (input->vpx_input_ctx->file_type) {
258 #if CONFIG_WEBM_IO
259  case FILE_TYPE_WEBM:
260  return webm_read_frame(input->webm_ctx, buf, bytes_in_buffer);
261 #endif
262  case FILE_TYPE_RAW:
263  return raw_read_frame(input->vpx_input_ctx->file,
264  buf, bytes_in_buffer, buffer_size);
265  case FILE_TYPE_IVF:
266  return ivf_read_frame(input->vpx_input_ctx->file,
267  buf, bytes_in_buffer, buffer_size);
268  default:
269  return 1;
270  }
271 }
272 
273 static void update_image_md5(const vpx_image_t *img, const int planes[3],
274  MD5Context *md5) {
275  int i, y;
276 
277  for (i = 0; i < 3; ++i) {
278  const int plane = planes[i];
279  const unsigned char *buf = img->planes[plane];
280  const int stride = img->stride[plane];
281  const int w = vpx_img_plane_width(img, plane) *
282  ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
283  const int h = vpx_img_plane_height(img, plane);
284 
285  for (y = 0; y < h; ++y) {
286  MD5Update(md5, buf, w);
287  buf += stride;
288  }
289  }
290 }
291 
292 static void write_image_file(const vpx_image_t *img, const int planes[3],
293  FILE *file) {
294  int i, y;
295 #if CONFIG_VP9_HIGHBITDEPTH
296  const int bytes_per_sample = ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
297 #else
298  const int bytes_per_sample = 1;
299 #endif
300 
301  for (i = 0; i < 3; ++i) {
302  const int plane = planes[i];
303  const unsigned char *buf = img->planes[plane];
304  const int stride = img->stride[plane];
305  const int w = vpx_img_plane_width(img, plane);
306  const int h = vpx_img_plane_height(img, plane);
307 
308  for (y = 0; y < h; ++y) {
309  fwrite(buf, bytes_per_sample, w, file);
310  buf += stride;
311  }
312  }
313 }
314 
315 static int file_is_raw(struct VpxInputContext *input) {
316  uint8_t buf[32];
317  int is_raw = 0;
319 
320  si.sz = sizeof(si);
321 
322  if (fread(buf, 1, 32, input->file) == 32) {
323  int i;
324 
325  if (mem_get_le32(buf) < 256 * 1024 * 1024) {
326  for (i = 0; i < get_vpx_decoder_count(); ++i) {
327  const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
328  if (!vpx_codec_peek_stream_info(decoder->codec_interface(),
329  buf + 4, 32 - 4, &si)) {
330  is_raw = 1;
331  input->fourcc = decoder->fourcc;
332  input->width = si.w;
333  input->height = si.h;
334  input->framerate.numerator = 30;
335  input->framerate.denominator = 1;
336  break;
337  }
338  }
339  }
340  }
341 
342  rewind(input->file);
343  return is_raw;
344 }
345 
346 static void show_progress(int frame_in, int frame_out, uint64_t dx_time) {
347  fprintf(stderr,
348  "%d decoded frames/%d showed frames in %"PRId64" us (%.2f fps)\r",
349  frame_in, frame_out, dx_time,
350  (double)frame_out * 1000000.0 / (double)dx_time);
351 }
352 
353 struct ExternalFrameBuffer {
354  uint8_t* data;
355  size_t size;
356  int in_use;
357 };
358 
359 struct ExternalFrameBufferList {
360  int num_external_frame_buffers;
361  struct ExternalFrameBuffer *ext_fb;
362 };
363 
364 // Callback used by libvpx to request an external frame buffer. |cb_priv|
365 // Application private data passed into the set function. |min_size| is the
366 // minimum size in bytes needed to decode the next frame. |fb| pointer to the
367 // frame buffer.
368 static int get_vp9_frame_buffer(void *cb_priv, size_t min_size,
370  int i;
371  struct ExternalFrameBufferList *const ext_fb_list =
372  (struct ExternalFrameBufferList *)cb_priv;
373  if (ext_fb_list == NULL)
374  return -1;
375 
376  // Find a free frame buffer.
377  for (i = 0; i < ext_fb_list->num_external_frame_buffers; ++i) {
378  if (!ext_fb_list->ext_fb[i].in_use)
379  break;
380  }
381 
382  if (i == ext_fb_list->num_external_frame_buffers)
383  return -1;
384 
385  if (ext_fb_list->ext_fb[i].size < min_size) {
386  free(ext_fb_list->ext_fb[i].data);
387  ext_fb_list->ext_fb[i].data = (uint8_t *)calloc(min_size, sizeof(uint8_t));
388  if (!ext_fb_list->ext_fb[i].data)
389  return -1;
390 
391  ext_fb_list->ext_fb[i].size = min_size;
392  }
393 
394  fb->data = ext_fb_list->ext_fb[i].data;
395  fb->size = ext_fb_list->ext_fb[i].size;
396  ext_fb_list->ext_fb[i].in_use = 1;
397 
398  // Set the frame buffer's private data to point at the external frame buffer.
399  fb->priv = &ext_fb_list->ext_fb[i];
400  return 0;
401 }
402 
403 // Callback used by libvpx when there are no references to the frame buffer.
404 // |cb_priv| user private data passed into the set function. |fb| pointer
405 // to the frame buffer.
406 static int release_vp9_frame_buffer(void *cb_priv,
408  struct ExternalFrameBuffer *const ext_fb =
409  (struct ExternalFrameBuffer *)fb->priv;
410  (void)cb_priv;
411  ext_fb->in_use = 0;
412  return 0;
413 }
414 
415 static void generate_filename(const char *pattern, char *out, size_t q_len,
416  unsigned int d_w, unsigned int d_h,
417  unsigned int frame_in) {
418  const char *p = pattern;
419  char *q = out;
420 
421  do {
422  char *next_pat = strchr(p, '%');
423 
424  if (p == next_pat) {
425  size_t pat_len;
426 
427  /* parse the pattern */
428  q[q_len - 1] = '\0';
429  switch (p[1]) {
430  case 'w':
431  snprintf(q, q_len - 1, "%d", d_w);
432  break;
433  case 'h':
434  snprintf(q, q_len - 1, "%d", d_h);
435  break;
436  case '1':
437  snprintf(q, q_len - 1, "%d", frame_in);
438  break;
439  case '2':
440  snprintf(q, q_len - 1, "%02d", frame_in);
441  break;
442  case '3':
443  snprintf(q, q_len - 1, "%03d", frame_in);
444  break;
445  case '4':
446  snprintf(q, q_len - 1, "%04d", frame_in);
447  break;
448  case '5':
449  snprintf(q, q_len - 1, "%05d", frame_in);
450  break;
451  case '6':
452  snprintf(q, q_len - 1, "%06d", frame_in);
453  break;
454  case '7':
455  snprintf(q, q_len - 1, "%07d", frame_in);
456  break;
457  case '8':
458  snprintf(q, q_len - 1, "%08d", frame_in);
459  break;
460  case '9':
461  snprintf(q, q_len - 1, "%09d", frame_in);
462  break;
463  default:
464  die("Unrecognized pattern %%%c\n", p[1]);
465  break;
466  }
467 
468  pat_len = strlen(q);
469  if (pat_len >= q_len - 1)
470  die("Output filename too long.\n");
471  q += pat_len;
472  p += 2;
473  q_len -= pat_len;
474  } else {
475  size_t copy_len;
476 
477  /* copy the next segment */
478  if (!next_pat)
479  copy_len = strlen(p);
480  else
481  copy_len = next_pat - p;
482 
483  if (copy_len >= q_len - 1)
484  die("Output filename too long.\n");
485 
486  memcpy(q, p, copy_len);
487  q[copy_len] = '\0';
488  q += copy_len;
489  p += copy_len;
490  q_len -= copy_len;
491  }
492  } while (*p);
493 }
494 
495 static int is_single_file(const char *outfile_pattern) {
496  const char *p = outfile_pattern;
497 
498  do {
499  p = strchr(p, '%');
500  if (p && p[1] >= '1' && p[1] <= '9')
501  return 0; // pattern contains sequence number, so it's not unique
502  if (p)
503  p++;
504  } while (p);
505 
506  return 1;
507 }
508 
509 static void print_md5(unsigned char digest[16], const char *filename) {
510  int i;
511 
512  for (i = 0; i < 16; ++i)
513  printf("%02x", digest[i]);
514  printf(" %s\n", filename);
515 }
516 
517 static FILE *open_outfile(const char *name) {
518  if (strcmp("-", name) == 0) {
519  set_binary_mode(stdout);
520  return stdout;
521  } else {
522  FILE *file = fopen(name, "wb");
523  if (!file)
524  fatal("Failed to open output file '%s'", name);
525  return file;
526  }
527 }
528 
529 #if CONFIG_VP9_HIGHBITDEPTH
530 static int img_shifted_realloc_required(const vpx_image_t *img,
531  const vpx_image_t *shifted,
532  vpx_img_fmt_t required_fmt) {
533  return img->d_w != shifted->d_w ||
534  img->d_h != shifted->d_h ||
535  required_fmt != shifted->fmt;
536 }
537 #endif
538 
539 static int main_loop(int argc, const char **argv_) {
540  vpx_codec_ctx_t decoder;
541  char *fn = NULL;
542  int i;
543  uint8_t *buf = NULL;
544  size_t bytes_in_buffer = 0, buffer_size = 0;
545  FILE *infile;
546  int frame_in = 0, frame_out = 0, flipuv = 0, noblit = 0;
547  int do_md5 = 0, progress = 0, frame_parallel = 0;
548  int stop_after = 0, postproc = 0, summary = 0, quiet = 1;
549  int arg_skip = 0;
550  int ec_enabled = 0;
551  int keep_going = 0;
552  const VpxInterface *interface = NULL;
553  const VpxInterface *fourcc_interface = NULL;
554  uint64_t dx_time = 0;
555  struct arg arg;
556  char **argv, **argi, **argj;
557 
558  int single_file;
559  int use_y4m = 1;
560  int opt_yv12 = 0;
561  int opt_i420 = 0;
562  vpx_codec_dec_cfg_t cfg = {0, 0, 0};
563 #if CONFIG_VP9_HIGHBITDEPTH
564  unsigned int output_bit_depth = 0;
565 #endif
566 #if CONFIG_VP8_DECODER
567  vp8_postproc_cfg_t vp8_pp_cfg = {0};
568  int vp8_dbg_color_ref_frame = 0;
569  int vp8_dbg_color_mb_modes = 0;
570  int vp8_dbg_color_b_modes = 0;
571  int vp8_dbg_display_mv = 0;
572 #endif
573  int frames_corrupted = 0;
574  int dec_flags = 0;
575  int do_scale = 0;
576  vpx_image_t *scaled_img = NULL;
577 #if CONFIG_VP9_HIGHBITDEPTH
578  vpx_image_t *img_shifted = NULL;
579 #endif
580  int frame_avail, got_data, flush_decoder = 0;
581  int num_external_frame_buffers = 0;
582  struct ExternalFrameBufferList ext_fb_list = {0, NULL};
583 
584  const char *outfile_pattern = NULL;
585  char outfile_name[PATH_MAX] = {0};
586  FILE *outfile = NULL;
587 
588  MD5Context md5_ctx;
589  unsigned char md5_digest[16];
590 
591  struct VpxDecInputContext input = {NULL, NULL};
592  struct VpxInputContext vpx_input_ctx;
593 #if CONFIG_WEBM_IO
594  struct WebmInputContext webm_ctx;
595  memset(&(webm_ctx), 0, sizeof(webm_ctx));
596  input.webm_ctx = &webm_ctx;
597 #endif
598  input.vpx_input_ctx = &vpx_input_ctx;
599 
600  /* Parse command line */
601  exec_name = argv_[0];
602  argv = argv_dup(argc - 1, argv_ + 1);
603 
604  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
605  memset(&arg, 0, sizeof(arg));
606  arg.argv_step = 1;
607 
608  if (arg_match(&arg, &codecarg, argi)) {
609  interface = get_vpx_decoder_by_name(arg.val);
610  if (!interface)
611  die("Error: Unrecognized argument (%s) to --codec\n", arg.val);
612  } else if (arg_match(&arg, &looparg, argi)) {
613  // no-op
614  } else if (arg_match(&arg, &outputfile, argi))
615  outfile_pattern = arg.val;
616  else if (arg_match(&arg, &use_yv12, argi)) {
617  use_y4m = 0;
618  flipuv = 1;
619  opt_yv12 = 1;
620  } else if (arg_match(&arg, &use_i420, argi)) {
621  use_y4m = 0;
622  flipuv = 0;
623  opt_i420 = 1;
624  } else if (arg_match(&arg, &rawvideo, argi)) {
625  use_y4m = 0;
626  } else if (arg_match(&arg, &flipuvarg, argi))
627  flipuv = 1;
628  else if (arg_match(&arg, &noblitarg, argi))
629  noblit = 1;
630  else if (arg_match(&arg, &progressarg, argi))
631  progress = 1;
632  else if (arg_match(&arg, &limitarg, argi))
633  stop_after = arg_parse_uint(&arg);
634  else if (arg_match(&arg, &skiparg, argi))
635  arg_skip = arg_parse_uint(&arg);
636  else if (arg_match(&arg, &postprocarg, argi))
637  postproc = 1;
638  else if (arg_match(&arg, &md5arg, argi))
639  do_md5 = 1;
640  else if (arg_match(&arg, &summaryarg, argi))
641  summary = 1;
642  else if (arg_match(&arg, &threadsarg, argi))
643  cfg.threads = arg_parse_uint(&arg);
644 #if CONFIG_VP9_DECODER
645  else if (arg_match(&arg, &frameparallelarg, argi))
646  frame_parallel = 1;
647 #endif
648  else if (arg_match(&arg, &verbosearg, argi))
649  quiet = 0;
650  else if (arg_match(&arg, &scalearg, argi))
651  do_scale = 1;
652  else if (arg_match(&arg, &fb_arg, argi))
653  num_external_frame_buffers = arg_parse_uint(&arg);
654  else if (arg_match(&arg, &continuearg, argi))
655  keep_going = 1;
656 #if CONFIG_VP9_HIGHBITDEPTH
657  else if (arg_match(&arg, &outbitdeptharg, argi)) {
658  output_bit_depth = arg_parse_uint(&arg);
659  }
660 #endif
661 #if CONFIG_VP8_DECODER
662  else if (arg_match(&arg, &addnoise_level, argi)) {
663  postproc = 1;
664  vp8_pp_cfg.post_proc_flag |= VP8_ADDNOISE;
665  vp8_pp_cfg.noise_level = arg_parse_uint(&arg);
666  } else if (arg_match(&arg, &demacroblock_level, argi)) {
667  postproc = 1;
668  vp8_pp_cfg.post_proc_flag |= VP8_DEMACROBLOCK;
669  vp8_pp_cfg.deblocking_level = arg_parse_uint(&arg);
670  } else if (arg_match(&arg, &deblock, argi)) {
671  postproc = 1;
672  vp8_pp_cfg.post_proc_flag |= VP8_DEBLOCK;
673  } else if (arg_match(&arg, &mfqe, argi)) {
674  postproc = 1;
675  vp8_pp_cfg.post_proc_flag |= VP8_MFQE;
676  } else if (arg_match(&arg, &pp_debug_info, argi)) {
677  unsigned int level = arg_parse_uint(&arg);
678 
679  postproc = 1;
680  vp8_pp_cfg.post_proc_flag &= ~0x7;
681 
682  if (level)
683  vp8_pp_cfg.post_proc_flag |= level;
684  } else if (arg_match(&arg, &pp_disp_ref_frame, argi)) {
685  unsigned int flags = arg_parse_int(&arg);
686  if (flags) {
687  postproc = 1;
688  vp8_dbg_color_ref_frame = flags;
689  }
690  } else if (arg_match(&arg, &pp_disp_mb_modes, argi)) {
691  unsigned int flags = arg_parse_int(&arg);
692  if (flags) {
693  postproc = 1;
694  vp8_dbg_color_mb_modes = flags;
695  }
696  } else if (arg_match(&arg, &pp_disp_b_modes, argi)) {
697  unsigned int flags = arg_parse_int(&arg);
698  if (flags) {
699  postproc = 1;
700  vp8_dbg_color_b_modes = flags;
701  }
702  } else if (arg_match(&arg, &pp_disp_mvs, argi)) {
703  unsigned int flags = arg_parse_int(&arg);
704  if (flags) {
705  postproc = 1;
706  vp8_dbg_display_mv = flags;
707  }
708  } else if (arg_match(&arg, &error_concealment, argi)) {
709  ec_enabled = 1;
710  }
711 #endif // CONFIG_VP8_DECODER
712  else
713  argj++;
714  }
715 
716  /* Check for unrecognized options */
717  for (argi = argv; *argi; argi++)
718  if (argi[0][0] == '-' && strlen(argi[0]) > 1)
719  die("Error: Unrecognized option %s\n", *argi);
720 
721  /* Handle non-option arguments */
722  fn = argv[0];
723 
724  if (!fn) {
725  free(argv);
726  usage_exit();
727  }
728  /* Open file */
729  infile = strcmp(fn, "-") ? fopen(fn, "rb") : set_binary_mode(stdin);
730 
731  if (!infile) {
732  fatal("Failed to open input file '%s'", strcmp(fn, "-") ? fn : "stdin");
733  }
734 #if CONFIG_OS_SUPPORT
735  /* Make sure we don't dump to the terminal, unless forced to with -o - */
736  if (!outfile_pattern && isatty(fileno(stdout)) && !do_md5 && !noblit) {
737  fprintf(stderr,
738  "Not dumping raw video to your terminal. Use '-o -' to "
739  "override.\n");
740  return EXIT_FAILURE;
741  }
742 #endif
743  input.vpx_input_ctx->file = infile;
744  if (file_is_ivf(input.vpx_input_ctx))
745  input.vpx_input_ctx->file_type = FILE_TYPE_IVF;
746 #if CONFIG_WEBM_IO
747  else if (file_is_webm(input.webm_ctx, input.vpx_input_ctx))
748  input.vpx_input_ctx->file_type = FILE_TYPE_WEBM;
749 #endif
750  else if (file_is_raw(input.vpx_input_ctx))
751  input.vpx_input_ctx->file_type = FILE_TYPE_RAW;
752  else {
753  fprintf(stderr, "Unrecognized input file type.\n");
754 #if !CONFIG_WEBM_IO
755  fprintf(stderr, "vpxdec was built without WebM container support.\n");
756 #endif
757  return EXIT_FAILURE;
758  }
759 
760  outfile_pattern = outfile_pattern ? outfile_pattern : "-";
761  single_file = is_single_file(outfile_pattern);
762 
763  if (!noblit && single_file) {
764  generate_filename(outfile_pattern, outfile_name, PATH_MAX,
765  vpx_input_ctx.width, vpx_input_ctx.height, 0);
766  if (do_md5)
767  MD5Init(&md5_ctx);
768  else
769  outfile = open_outfile(outfile_name);
770  }
771 
772  if (use_y4m && !noblit) {
773  if (!single_file) {
774  fprintf(stderr, "YUV4MPEG2 not supported with output patterns,"
775  " try --i420 or --yv12 or --rawvideo.\n");
776  return EXIT_FAILURE;
777  }
778 
779 #if CONFIG_WEBM_IO
780  if (vpx_input_ctx.file_type == FILE_TYPE_WEBM) {
781  if (webm_guess_framerate(input.webm_ctx, input.vpx_input_ctx)) {
782  fprintf(stderr, "Failed to guess framerate -- error parsing "
783  "webm file?\n");
784  return EXIT_FAILURE;
785  }
786  }
787 #endif
788  }
789 
790  fourcc_interface = get_vpx_decoder_by_fourcc(vpx_input_ctx.fourcc);
791  if (interface && fourcc_interface && interface != fourcc_interface)
792  warn("Header indicates codec: %s\n", fourcc_interface->name);
793  else
794  interface = fourcc_interface;
795 
796  if (!interface)
797  interface = get_vpx_decoder_by_index(0);
798 
799  dec_flags = (postproc ? VPX_CODEC_USE_POSTPROC : 0) |
800  (ec_enabled ? VPX_CODEC_USE_ERROR_CONCEALMENT : 0) |
801  (frame_parallel ? VPX_CODEC_USE_FRAME_THREADING : 0);
802  if (vpx_codec_dec_init(&decoder, interface->codec_interface(),
803  &cfg, dec_flags)) {
804  fprintf(stderr, "Failed to initialize decoder: %s\n",
805  vpx_codec_error(&decoder));
806  return EXIT_FAILURE;
807  }
808 
809  if (!quiet)
810  fprintf(stderr, "%s\n", decoder.name);
811 
812 #if CONFIG_VP8_DECODER
813  if (vp8_pp_cfg.post_proc_flag
814  && vpx_codec_control(&decoder, VP8_SET_POSTPROC, &vp8_pp_cfg)) {
815  fprintf(stderr, "Failed to configure postproc: %s\n",
816  vpx_codec_error(&decoder));
817  return EXIT_FAILURE;
818  }
819 
820  if (vp8_dbg_color_ref_frame
822  vp8_dbg_color_ref_frame)) {
823  fprintf(stderr, "Failed to configure reference block visualizer: %s\n",
824  vpx_codec_error(&decoder));
825  return EXIT_FAILURE;
826  }
827 
828  if (vp8_dbg_color_mb_modes
830  vp8_dbg_color_mb_modes)) {
831  fprintf(stderr, "Failed to configure macro block visualizer: %s\n",
832  vpx_codec_error(&decoder));
833  return EXIT_FAILURE;
834  }
835 
836  if (vp8_dbg_color_b_modes
838  vp8_dbg_color_b_modes)) {
839  fprintf(stderr, "Failed to configure block visualizer: %s\n",
840  vpx_codec_error(&decoder));
841  return EXIT_FAILURE;
842  }
843 
844  if (vp8_dbg_display_mv
846  vp8_dbg_display_mv)) {
847  fprintf(stderr, "Failed to configure motion vector visualizer: %s\n",
848  vpx_codec_error(&decoder));
849  return EXIT_FAILURE;
850  }
851 #endif
852 
853 
854  if (arg_skip)
855  fprintf(stderr, "Skipping first %d frames.\n", arg_skip);
856  while (arg_skip) {
857  if (read_frame(&input, &buf, &bytes_in_buffer, &buffer_size))
858  break;
859  arg_skip--;
860  }
861 
862  if (num_external_frame_buffers > 0) {
863  ext_fb_list.num_external_frame_buffers = num_external_frame_buffers;
864  ext_fb_list.ext_fb = (struct ExternalFrameBuffer *)calloc(
865  num_external_frame_buffers, sizeof(*ext_fb_list.ext_fb));
867  &decoder, get_vp9_frame_buffer, release_vp9_frame_buffer,
868  &ext_fb_list)) {
869  fprintf(stderr, "Failed to configure external frame buffers: %s\n",
870  vpx_codec_error(&decoder));
871  return EXIT_FAILURE;
872  }
873  }
874 
875  frame_avail = 1;
876  got_data = 0;
877 
878  /* Decode file */
879  while (frame_avail || got_data) {
880  vpx_codec_iter_t iter = NULL;
881  vpx_image_t *img;
882  struct vpx_usec_timer timer;
883  int corrupted = 0;
884 
885  frame_avail = 0;
886  if (!stop_after || frame_in < stop_after) {
887  if (!read_frame(&input, &buf, &bytes_in_buffer, &buffer_size)) {
888  frame_avail = 1;
889  frame_in++;
890 
891  vpx_usec_timer_start(&timer);
892 
893  if (vpx_codec_decode(&decoder, buf, (unsigned int)bytes_in_buffer,
894  NULL, 0)) {
895  const char *detail = vpx_codec_error_detail(&decoder);
896  warn("Failed to decode frame %d: %s",
897  frame_in, vpx_codec_error(&decoder));
898 
899  if (detail)
900  warn("Additional information: %s", detail);
901  if (!keep_going)
902  goto fail;
903  }
904 
905  vpx_usec_timer_mark(&timer);
906  dx_time += vpx_usec_timer_elapsed(&timer);
907  } else {
908  flush_decoder = 1;
909  }
910  } else {
911  flush_decoder = 1;
912  }
913 
914  vpx_usec_timer_start(&timer);
915 
916  if (flush_decoder) {
917  // Flush the decoder in frame parallel decode.
918  if (vpx_codec_decode(&decoder, NULL, 0, NULL, 0)) {
919  warn("Failed to flush decoder: %s", vpx_codec_error(&decoder));
920  }
921  }
922 
923  got_data = 0;
924  if ((img = vpx_codec_get_frame(&decoder, &iter))) {
925  ++frame_out;
926  got_data = 1;
927  }
928 
929  vpx_usec_timer_mark(&timer);
930  dx_time += (unsigned int)vpx_usec_timer_elapsed(&timer);
931 
932  if (!frame_parallel &&
933  vpx_codec_control(&decoder, VP8D_GET_FRAME_CORRUPTED, &corrupted)) {
934  warn("Failed VP8_GET_FRAME_CORRUPTED: %s", vpx_codec_error(&decoder));
935  if (!keep_going)
936  goto fail;
937  }
938  frames_corrupted += corrupted;
939 
940  if (progress)
941  show_progress(frame_in, frame_out, dx_time);
942 
943  if (!noblit && img) {
944  const int PLANES_YUV[] = {VPX_PLANE_Y, VPX_PLANE_U, VPX_PLANE_V};
945  const int PLANES_YVU[] = {VPX_PLANE_Y, VPX_PLANE_V, VPX_PLANE_U};
946  const int *planes = flipuv ? PLANES_YVU : PLANES_YUV;
947 
948  if (do_scale) {
949  if (frame_out == 1) {
950  // If the output frames are to be scaled to a fixed display size then
951  // use the width and height specified in the container. If either of
952  // these is set to 0, use the display size set in the first frame
953  // header. If that is unavailable, use the raw decoded size of the
954  // first decoded frame.
955  int render_width = vpx_input_ctx.width;
956  int render_height = vpx_input_ctx.height;
957  if (!render_width || !render_height) {
958  int render_size[2];
960  render_size)) {
961  // As last resort use size of first frame as display size.
962  render_width = img->d_w;
963  render_height = img->d_h;
964  } else {
965  render_width = render_size[0];
966  render_height = render_size[1];
967  }
968  }
969  scaled_img = vpx_img_alloc(NULL, img->fmt, render_width,
970  render_height, 16);
971  scaled_img->bit_depth = img->bit_depth;
972  }
973 
974  if (img->d_w != scaled_img->d_w || img->d_h != scaled_img->d_h) {
975 #if CONFIG_LIBYUV
976  libyuv_scale(img, scaled_img, kFilterBox);
977  img = scaled_img;
978 #else
979  fprintf(stderr, "Failed to scale output frame: %s.\n"
980  "Scaling is disabled in this configuration. "
981  "To enable scaling, configure with --enable-libyuv\n",
982  vpx_codec_error(&decoder));
983  return EXIT_FAILURE;
984 #endif
985  }
986  }
987 #if CONFIG_VP9_HIGHBITDEPTH
988  // Default to codec bit depth if output bit depth not set
989  if (!output_bit_depth && single_file && !do_md5) {
990  output_bit_depth = img->bit_depth;
991  }
992  // Shift up or down if necessary
993  if (output_bit_depth != 0 && output_bit_depth != img->bit_depth) {
994  const vpx_img_fmt_t shifted_fmt = output_bit_depth == 8 ?
995  img->fmt ^ (img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) :
997  if (img_shifted &&
998  img_shifted_realloc_required(img, img_shifted, shifted_fmt)) {
999  vpx_img_free(img_shifted);
1000  img_shifted = NULL;
1001  }
1002  if (!img_shifted) {
1003  img_shifted = vpx_img_alloc(NULL, shifted_fmt,
1004  img->d_w, img->d_h, 16);
1005  img_shifted->bit_depth = output_bit_depth;
1006  }
1007  if (output_bit_depth > img->bit_depth) {
1008  vpx_img_upshift(img_shifted, img,
1009  output_bit_depth - img->bit_depth);
1010  } else {
1011  vpx_img_downshift(img_shifted, img,
1012  img->bit_depth - output_bit_depth);
1013  }
1014  img = img_shifted;
1015  }
1016 #endif
1017 
1018  if (single_file) {
1019  if (use_y4m) {
1020  char buf[Y4M_BUFFER_SIZE] = {0};
1021  size_t len = 0;
1022  if (img->fmt == VPX_IMG_FMT_I440 || img->fmt == VPX_IMG_FMT_I44016) {
1023  fprintf(stderr, "Cannot produce y4m output for 440 sampling.\n");
1024  goto fail;
1025  }
1026  if (frame_out == 1) {
1027  // Y4M file header
1028  len = y4m_write_file_header(buf, sizeof(buf),
1029  vpx_input_ctx.width,
1030  vpx_input_ctx.height,
1031  &vpx_input_ctx.framerate,
1032  img->fmt, img->bit_depth);
1033  if (do_md5) {
1034  MD5Update(&md5_ctx, (md5byte *)buf, (unsigned int)len);
1035  } else {
1036  fputs(buf, outfile);
1037  }
1038  }
1039 
1040  // Y4M frame header
1041  len = y4m_write_frame_header(buf, sizeof(buf));
1042  if (do_md5) {
1043  MD5Update(&md5_ctx, (md5byte *)buf, (unsigned int)len);
1044  } else {
1045  fputs(buf, outfile);
1046  }
1047  } else {
1048  if (frame_out == 1) {
1049  // Check if --yv12 or --i420 options are consistent with the
1050  // bit-stream decoded
1051  if (opt_i420) {
1052  if (img->fmt != VPX_IMG_FMT_I420 &&
1053  img->fmt != VPX_IMG_FMT_I42016) {
1054  fprintf(stderr, "Cannot produce i420 output for bit-stream.\n");
1055  goto fail;
1056  }
1057  }
1058  if (opt_yv12) {
1059  if ((img->fmt != VPX_IMG_FMT_I420 &&
1060  img->fmt != VPX_IMG_FMT_YV12) || img->bit_depth != 8) {
1061  fprintf(stderr, "Cannot produce yv12 output for bit-stream.\n");
1062  goto fail;
1063  }
1064  }
1065  }
1066  }
1067 
1068  if (do_md5) {
1069  update_image_md5(img, planes, &md5_ctx);
1070  } else {
1071  write_image_file(img, planes, outfile);
1072  }
1073  } else {
1074  generate_filename(outfile_pattern, outfile_name, PATH_MAX,
1075  img->d_w, img->d_h, frame_in);
1076  if (do_md5) {
1077  MD5Init(&md5_ctx);
1078  update_image_md5(img, planes, &md5_ctx);
1079  MD5Final(md5_digest, &md5_ctx);
1080  print_md5(md5_digest, outfile_name);
1081  } else {
1082  outfile = open_outfile(outfile_name);
1083  write_image_file(img, planes, outfile);
1084  fclose(outfile);
1085  }
1086  }
1087  }
1088  }
1089 
1090  if (summary || progress) {
1091  show_progress(frame_in, frame_out, dx_time);
1092  fprintf(stderr, "\n");
1093  }
1094 
1095  if (frames_corrupted)
1096  fprintf(stderr, "WARNING: %d frames corrupted.\n", frames_corrupted);
1097 
1098 fail:
1099 
1100  if (vpx_codec_destroy(&decoder)) {
1101  fprintf(stderr, "Failed to destroy decoder: %s\n",
1102  vpx_codec_error(&decoder));
1103  return EXIT_FAILURE;
1104  }
1105 
1106  if (!noblit && single_file) {
1107  if (do_md5) {
1108  MD5Final(md5_digest, &md5_ctx);
1109  print_md5(md5_digest, outfile_name);
1110  } else {
1111  fclose(outfile);
1112  }
1113  }
1114 
1115 #if CONFIG_WEBM_IO
1116  if (input.vpx_input_ctx->file_type == FILE_TYPE_WEBM)
1117  webm_free(input.webm_ctx);
1118 #endif
1119 
1120  if (input.vpx_input_ctx->file_type != FILE_TYPE_WEBM)
1121  free(buf);
1122 
1123  if (scaled_img) vpx_img_free(scaled_img);
1124 #if CONFIG_VP9_HIGHBITDEPTH
1125  if (img_shifted) vpx_img_free(img_shifted);
1126 #endif
1127 
1128  for (i = 0; i < ext_fb_list.num_external_frame_buffers; ++i) {
1129  free(ext_fb_list.ext_fb[i].data);
1130  }
1131  free(ext_fb_list.ext_fb);
1132 
1133  fclose(infile);
1134  free(argv);
1135 
1136  return frames_corrupted ? EXIT_FAILURE : EXIT_SUCCESS;
1137 }
1138 
1139 int main(int argc, const char **argv_) {
1140  unsigned int loops = 1, i;
1141  char **argv, **argi, **argj;
1142  struct arg arg;
1143  int error = 0;
1144 
1145  argv = argv_dup(argc - 1, argv_ + 1);
1146  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
1147  memset(&arg, 0, sizeof(arg));
1148  arg.argv_step = 1;
1149 
1150  if (arg_match(&arg, &looparg, argi)) {
1151  loops = arg_parse_uint(&arg);
1152  break;
1153  }
1154  }
1155  free(argv);
1156  for (i = 0; !error && i < loops; i++)
1157  error = main_loop(argc, argv_);
1158  return error;
1159 }
Definition: vpx_image.h:66
Image Descriptor.
Definition: vpx_image.h:88
Describes the decoder algorithm interface to applications.
const char * vpx_codec_iface_name(vpx_codec_iface_t *iface)
Return the name for a given interface.
Definition: vpx_image.h:55
Definition: vp8.h:48
unsigned int threads
Definition: vpx_decoder.h:116
unsigned int sz
Definition: vpx_decoder.h:97
Stream properties.
Definition: vpx_decoder.h:96
Definition: vp8dx.h:86
int noise_level
Definition: vp8.h:88
unsigned int bit_depth
Definition: vpx_image.h:96
Provides definitions for using VP8 or VP9 within the vpx Decoder interface.
vpx_codec_err_t vpx_codec_peek_stream_info(vpx_codec_iface_t *iface, const uint8_t *data, unsigned int data_sz, vpx_codec_stream_info_t *si)
Parse stream info from a buffer.
#define VPX_PLANE_Y
Definition: vpx_image.h:112
uint8_t * data
Definition: vpx_frame_buffer.h:40
const char * name
Definition: vpx_codec.h:200
#define VPX_PLANE_V
Definition: vpx_image.h:114
#define VPX_IMG_FMT_HIGHBITDEPTH
Definition: vpx_image.h:37
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.
Definition: vpx_image.h:56
unsigned int d_w
Definition: vpx_image.h:99
#define vpx_codec_dec_init(ctx, iface, cfg, flags)
Convenience macro for vpx_codec_dec_init_ver()
Definition: vpx_decoder.h:154
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.
enum vpx_img_fmt vpx_img_fmt_t
List of supported image formats.
size_t size
Definition: vpx_frame_buffer.h:41
int stride[4]
Definition: vpx_image.h:117
void vpx_img_free(vpx_image_t *img)
Close an image descriptor.
vpx_img_fmt_t fmt
Definition: vpx_image.h:89
unsigned char * planes[4]
Definition: vpx_image.h:116
Definition: vp8.h:47
#define VPX_CODEC_USE_POSTPROC
Definition: vpx_decoder.h:77
Definition: vp8dx.h:64
#define VPX_CODEC_USE_FRAME_THREADING
Definition: vpx_decoder.h:86
const char * vpx_codec_error_detail(vpx_codec_ctx_t *ctx)
Retrieve detailed error information for codec context.
void * priv
Definition: vpx_frame_buffer.h:42
#define VPX_PLANE_U
Definition: vpx_image.h:113
int deblocking_level
Definition: vp8.h:87
Definition: vp8.h:51
Definition: vp8.h:49
unsigned int w
Definition: vpx_decoder.h:98
External frame buffer.
Definition: vpx_frame_buffer.h:39
Definition: vp8.h:50
#define vpx_codec_control(ctx, id, data)
vpx_codec_control wrapper macro
Definition: vpx_codec.h:407
vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx)
Destroy a codec instance.
unsigned int d_h
Definition: vpx_image.h:100
post process flags
Definition: vp8.h:85
vpx_codec_err_t vpx_codec_set_frame_buffer_functions(vpx_codec_ctx_t *ctx, vpx_get_frame_buffer_cb_fn_t cb_get, vpx_release_frame_buffer_cb_fn_t cb_release, void *cb_priv)
Pass in external frame buffers for the decoder to use.
unsigned int h
Definition: vpx_decoder.h:99
const char * vpx_codec_error(vpx_codec_ctx_t *ctx)
Retrieve error synopsis for codec context.
Initialization Configurations.
Definition: vpx_decoder.h:115
Definition: vpx_image.h:61
const void * vpx_codec_iter_t
Iterator.
Definition: vpx_codec.h:188
vpx_image_t * vpx_codec_get_frame(vpx_codec_ctx_t *ctx, vpx_codec_iter_t *iter)
Decoded frames iterator.
int post_proc_flag
Definition: vp8.h:86
Codec context structure.
Definition: vpx_codec.h:199