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 || CONFIG_VP10_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,
261  buf, bytes_in_buffer, buffer_size);
262 #endif
263  case FILE_TYPE_RAW:
264  return raw_read_frame(input->vpx_input_ctx->file,
265  buf, bytes_in_buffer, buffer_size);
266  case FILE_TYPE_IVF:
267  return ivf_read_frame(input->vpx_input_ctx->file,
268  buf, bytes_in_buffer, buffer_size);
269  default:
270  return 1;
271  }
272 }
273 
274 static void update_image_md5(const vpx_image_t *img, const int planes[3],
275  MD5Context *md5) {
276  int i, y;
277 
278  for (i = 0; i < 3; ++i) {
279  const int plane = planes[i];
280  const unsigned char *buf = img->planes[plane];
281  const int stride = img->stride[plane];
282  const int w = vpx_img_plane_width(img, plane) *
283  ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
284  const int h = vpx_img_plane_height(img, plane);
285 
286  for (y = 0; y < h; ++y) {
287  MD5Update(md5, buf, w);
288  buf += stride;
289  }
290  }
291 }
292 
293 static void write_image_file(const vpx_image_t *img, const int planes[3],
294  FILE *file) {
295  int i, y;
296 #if CONFIG_VP9_HIGHBITDEPTH
297  const int bytes_per_sample = ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
298 #else
299  const int bytes_per_sample = 1;
300 #endif
301 
302  for (i = 0; i < 3; ++i) {
303  const int plane = planes[i];
304  const unsigned char *buf = img->planes[plane];
305  const int stride = img->stride[plane];
306  const int w = vpx_img_plane_width(img, plane);
307  const int h = vpx_img_plane_height(img, plane);
308 
309  for (y = 0; y < h; ++y) {
310  fwrite(buf, bytes_per_sample, w, file);
311  buf += stride;
312  }
313  }
314 }
315 
316 static int file_is_raw(struct VpxInputContext *input) {
317  uint8_t buf[32];
318  int is_raw = 0;
320 
321  si.sz = sizeof(si);
322 
323  if (fread(buf, 1, 32, input->file) == 32) {
324  int i;
325 
326  if (mem_get_le32(buf) < 256 * 1024 * 1024) {
327  for (i = 0; i < get_vpx_decoder_count(); ++i) {
328  const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
329  if (!vpx_codec_peek_stream_info(decoder->codec_interface(),
330  buf + 4, 32 - 4, &si)) {
331  is_raw = 1;
332  input->fourcc = decoder->fourcc;
333  input->width = si.w;
334  input->height = si.h;
335  input->framerate.numerator = 30;
336  input->framerate.denominator = 1;
337  break;
338  }
339  }
340  }
341  }
342 
343  rewind(input->file);
344  return is_raw;
345 }
346 
347 static void show_progress(int frame_in, int frame_out, uint64_t dx_time) {
348  fprintf(stderr,
349  "%d decoded frames/%d showed frames in %"PRId64" us (%.2f fps)\r",
350  frame_in, frame_out, dx_time,
351  (double)frame_out * 1000000.0 / (double)dx_time);
352 }
353 
354 struct ExternalFrameBuffer {
355  uint8_t* data;
356  size_t size;
357  int in_use;
358 };
359 
360 struct ExternalFrameBufferList {
361  int num_external_frame_buffers;
362  struct ExternalFrameBuffer *ext_fb;
363 };
364 
365 // Callback used by libvpx to request an external frame buffer. |cb_priv|
366 // Application private data passed into the set function. |min_size| is the
367 // minimum size in bytes needed to decode the next frame. |fb| pointer to the
368 // frame buffer.
369 static int get_vp9_frame_buffer(void *cb_priv, size_t min_size,
371  int i;
372  struct ExternalFrameBufferList *const ext_fb_list =
373  (struct ExternalFrameBufferList *)cb_priv;
374  if (ext_fb_list == NULL)
375  return -1;
376 
377  // Find a free frame buffer.
378  for (i = 0; i < ext_fb_list->num_external_frame_buffers; ++i) {
379  if (!ext_fb_list->ext_fb[i].in_use)
380  break;
381  }
382 
383  if (i == ext_fb_list->num_external_frame_buffers)
384  return -1;
385 
386  if (ext_fb_list->ext_fb[i].size < min_size) {
387  free(ext_fb_list->ext_fb[i].data);
388  ext_fb_list->ext_fb[i].data = (uint8_t *)calloc(min_size, sizeof(uint8_t));
389  if (!ext_fb_list->ext_fb[i].data)
390  return -1;
391 
392  ext_fb_list->ext_fb[i].size = min_size;
393  }
394 
395  fb->data = ext_fb_list->ext_fb[i].data;
396  fb->size = ext_fb_list->ext_fb[i].size;
397  ext_fb_list->ext_fb[i].in_use = 1;
398 
399  // Set the frame buffer's private data to point at the external frame buffer.
400  fb->priv = &ext_fb_list->ext_fb[i];
401  return 0;
402 }
403 
404 // Callback used by libvpx when there are no references to the frame buffer.
405 // |cb_priv| user private data passed into the set function. |fb| pointer
406 // to the frame buffer.
407 static int release_vp9_frame_buffer(void *cb_priv,
409  struct ExternalFrameBuffer *const ext_fb =
410  (struct ExternalFrameBuffer *)fb->priv;
411  (void)cb_priv;
412  ext_fb->in_use = 0;
413  return 0;
414 }
415 
416 static void generate_filename(const char *pattern, char *out, size_t q_len,
417  unsigned int d_w, unsigned int d_h,
418  unsigned int frame_in) {
419  const char *p = pattern;
420  char *q = out;
421 
422  do {
423  char *next_pat = strchr(p, '%');
424 
425  if (p == next_pat) {
426  size_t pat_len;
427 
428  /* parse the pattern */
429  q[q_len - 1] = '\0';
430  switch (p[1]) {
431  case 'w':
432  snprintf(q, q_len - 1, "%d", d_w);
433  break;
434  case 'h':
435  snprintf(q, q_len - 1, "%d", d_h);
436  break;
437  case '1':
438  snprintf(q, q_len - 1, "%d", frame_in);
439  break;
440  case '2':
441  snprintf(q, q_len - 1, "%02d", frame_in);
442  break;
443  case '3':
444  snprintf(q, q_len - 1, "%03d", frame_in);
445  break;
446  case '4':
447  snprintf(q, q_len - 1, "%04d", frame_in);
448  break;
449  case '5':
450  snprintf(q, q_len - 1, "%05d", frame_in);
451  break;
452  case '6':
453  snprintf(q, q_len - 1, "%06d", frame_in);
454  break;
455  case '7':
456  snprintf(q, q_len - 1, "%07d", frame_in);
457  break;
458  case '8':
459  snprintf(q, q_len - 1, "%08d", frame_in);
460  break;
461  case '9':
462  snprintf(q, q_len - 1, "%09d", frame_in);
463  break;
464  default:
465  die("Unrecognized pattern %%%c\n", p[1]);
466  break;
467  }
468 
469  pat_len = strlen(q);
470  if (pat_len >= q_len - 1)
471  die("Output filename too long.\n");
472  q += pat_len;
473  p += 2;
474  q_len -= pat_len;
475  } else {
476  size_t copy_len;
477 
478  /* copy the next segment */
479  if (!next_pat)
480  copy_len = strlen(p);
481  else
482  copy_len = next_pat - p;
483 
484  if (copy_len >= q_len - 1)
485  die("Output filename too long.\n");
486 
487  memcpy(q, p, copy_len);
488  q[copy_len] = '\0';
489  q += copy_len;
490  p += copy_len;
491  q_len -= copy_len;
492  }
493  } while (*p);
494 }
495 
496 static int is_single_file(const char *outfile_pattern) {
497  const char *p = outfile_pattern;
498 
499  do {
500  p = strchr(p, '%');
501  if (p && p[1] >= '1' && p[1] <= '9')
502  return 0; // pattern contains sequence number, so it's not unique
503  if (p)
504  p++;
505  } while (p);
506 
507  return 1;
508 }
509 
510 static void print_md5(unsigned char digest[16], const char *filename) {
511  int i;
512 
513  for (i = 0; i < 16; ++i)
514  printf("%02x", digest[i]);
515  printf(" %s\n", filename);
516 }
517 
518 static FILE *open_outfile(const char *name) {
519  if (strcmp("-", name) == 0) {
520  set_binary_mode(stdout);
521  return stdout;
522  } else {
523  FILE *file = fopen(name, "wb");
524  if (!file)
525  fatal("Failed to open output file '%s'", name);
526  return file;
527  }
528 }
529 
530 #if CONFIG_VP9_HIGHBITDEPTH
531 static int img_shifted_realloc_required(const vpx_image_t *img,
532  const vpx_image_t *shifted,
533  vpx_img_fmt_t required_fmt) {
534  return img->d_w != shifted->d_w ||
535  img->d_h != shifted->d_h ||
536  required_fmt != shifted->fmt;
537 }
538 #endif
539 
540 static int main_loop(int argc, const char **argv_) {
541  vpx_codec_ctx_t decoder;
542  char *fn = NULL;
543  int i;
544  uint8_t *buf = NULL;
545  size_t bytes_in_buffer = 0, buffer_size = 0;
546  FILE *infile;
547  int frame_in = 0, frame_out = 0, flipuv = 0, noblit = 0;
548  int do_md5 = 0, progress = 0, frame_parallel = 0;
549  int stop_after = 0, postproc = 0, summary = 0, quiet = 1;
550  int arg_skip = 0;
551  int ec_enabled = 0;
552  int keep_going = 0;
553  const VpxInterface *interface = NULL;
554  const VpxInterface *fourcc_interface = NULL;
555  uint64_t dx_time = 0;
556  struct arg arg;
557  char **argv, **argi, **argj;
558 
559  int single_file;
560  int use_y4m = 1;
561  int opt_yv12 = 0;
562  int opt_i420 = 0;
563  vpx_codec_dec_cfg_t cfg = {0, 0, 0};
564 #if CONFIG_VP9_HIGHBITDEPTH
565  unsigned int output_bit_depth = 0;
566 #endif
567 #if CONFIG_VP8_DECODER
568  vp8_postproc_cfg_t vp8_pp_cfg = {0};
569  int vp8_dbg_color_ref_frame = 0;
570  int vp8_dbg_color_mb_modes = 0;
571  int vp8_dbg_color_b_modes = 0;
572  int vp8_dbg_display_mv = 0;
573 #endif
574  int frames_corrupted = 0;
575  int dec_flags = 0;
576  int do_scale = 0;
577  vpx_image_t *scaled_img = NULL;
578 #if CONFIG_VP9_HIGHBITDEPTH
579  vpx_image_t *img_shifted = NULL;
580 #endif
581  int frame_avail, got_data, flush_decoder = 0;
582  int num_external_frame_buffers = 0;
583  struct ExternalFrameBufferList ext_fb_list = {0, NULL};
584 
585  const char *outfile_pattern = NULL;
586  char outfile_name[PATH_MAX] = {0};
587  FILE *outfile = NULL;
588 
589  MD5Context md5_ctx;
590  unsigned char md5_digest[16];
591 
592  struct VpxDecInputContext input = {NULL, NULL};
593  struct VpxInputContext vpx_input_ctx;
594 #if CONFIG_WEBM_IO
595  struct WebmInputContext webm_ctx;
596  memset(&(webm_ctx), 0, sizeof(webm_ctx));
597  input.webm_ctx = &webm_ctx;
598 #endif
599  input.vpx_input_ctx = &vpx_input_ctx;
600 
601  /* Parse command line */
602  exec_name = argv_[0];
603  argv = argv_dup(argc - 1, argv_ + 1);
604 
605  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
606  memset(&arg, 0, sizeof(arg));
607  arg.argv_step = 1;
608 
609  if (arg_match(&arg, &codecarg, argi)) {
610  interface = get_vpx_decoder_by_name(arg.val);
611  if (!interface)
612  die("Error: Unrecognized argument (%s) to --codec\n", arg.val);
613  } else if (arg_match(&arg, &looparg, argi)) {
614  // no-op
615  } else if (arg_match(&arg, &outputfile, argi))
616  outfile_pattern = arg.val;
617  else if (arg_match(&arg, &use_yv12, argi)) {
618  use_y4m = 0;
619  flipuv = 1;
620  opt_yv12 = 1;
621  } else if (arg_match(&arg, &use_i420, argi)) {
622  use_y4m = 0;
623  flipuv = 0;
624  opt_i420 = 1;
625  } else if (arg_match(&arg, &rawvideo, argi)) {
626  use_y4m = 0;
627  } else if (arg_match(&arg, &flipuvarg, argi))
628  flipuv = 1;
629  else if (arg_match(&arg, &noblitarg, argi))
630  noblit = 1;
631  else if (arg_match(&arg, &progressarg, argi))
632  progress = 1;
633  else if (arg_match(&arg, &limitarg, argi))
634  stop_after = arg_parse_uint(&arg);
635  else if (arg_match(&arg, &skiparg, argi))
636  arg_skip = arg_parse_uint(&arg);
637  else if (arg_match(&arg, &postprocarg, argi))
638  postproc = 1;
639  else if (arg_match(&arg, &md5arg, argi))
640  do_md5 = 1;
641  else if (arg_match(&arg, &summaryarg, argi))
642  summary = 1;
643  else if (arg_match(&arg, &threadsarg, argi))
644  cfg.threads = arg_parse_uint(&arg);
645 #if CONFIG_VP9_DECODER || CONFIG_VP10_DECODER
646  else if (arg_match(&arg, &frameparallelarg, argi))
647  frame_parallel = 1;
648 #endif
649  else if (arg_match(&arg, &verbosearg, argi))
650  quiet = 0;
651  else if (arg_match(&arg, &scalearg, argi))
652  do_scale = 1;
653  else if (arg_match(&arg, &fb_arg, argi))
654  num_external_frame_buffers = arg_parse_uint(&arg);
655  else if (arg_match(&arg, &continuearg, argi))
656  keep_going = 1;
657 #if CONFIG_VP9_HIGHBITDEPTH
658  else if (arg_match(&arg, &outbitdeptharg, argi)) {
659  output_bit_depth = arg_parse_uint(&arg);
660  }
661 #endif
662 #if CONFIG_VP8_DECODER
663  else if (arg_match(&arg, &addnoise_level, argi)) {
664  postproc = 1;
665  vp8_pp_cfg.post_proc_flag |= VP8_ADDNOISE;
666  vp8_pp_cfg.noise_level = arg_parse_uint(&arg);
667  } else if (arg_match(&arg, &demacroblock_level, argi)) {
668  postproc = 1;
669  vp8_pp_cfg.post_proc_flag |= VP8_DEMACROBLOCK;
670  vp8_pp_cfg.deblocking_level = arg_parse_uint(&arg);
671  } else if (arg_match(&arg, &deblock, argi)) {
672  postproc = 1;
673  vp8_pp_cfg.post_proc_flag |= VP8_DEBLOCK;
674  } else if (arg_match(&arg, &mfqe, argi)) {
675  postproc = 1;
676  vp8_pp_cfg.post_proc_flag |= VP8_MFQE;
677  } else if (arg_match(&arg, &pp_debug_info, argi)) {
678  unsigned int level = arg_parse_uint(&arg);
679 
680  postproc = 1;
681  vp8_pp_cfg.post_proc_flag &= ~0x7;
682 
683  if (level)
684  vp8_pp_cfg.post_proc_flag |= level;
685  } else if (arg_match(&arg, &pp_disp_ref_frame, argi)) {
686  unsigned int flags = arg_parse_int(&arg);
687  if (flags) {
688  postproc = 1;
689  vp8_dbg_color_ref_frame = flags;
690  }
691  } else if (arg_match(&arg, &pp_disp_mb_modes, argi)) {
692  unsigned int flags = arg_parse_int(&arg);
693  if (flags) {
694  postproc = 1;
695  vp8_dbg_color_mb_modes = flags;
696  }
697  } else if (arg_match(&arg, &pp_disp_b_modes, argi)) {
698  unsigned int flags = arg_parse_int(&arg);
699  if (flags) {
700  postproc = 1;
701  vp8_dbg_color_b_modes = flags;
702  }
703  } else if (arg_match(&arg, &pp_disp_mvs, argi)) {
704  unsigned int flags = arg_parse_int(&arg);
705  if (flags) {
706  postproc = 1;
707  vp8_dbg_display_mv = flags;
708  }
709  } else if (arg_match(&arg, &error_concealment, argi)) {
710  ec_enabled = 1;
711  }
712 #endif // CONFIG_VP8_DECODER
713  else
714  argj++;
715  }
716 
717  /* Check for unrecognized options */
718  for (argi = argv; *argi; argi++)
719  if (argi[0][0] == '-' && strlen(argi[0]) > 1)
720  die("Error: Unrecognized option %s\n", *argi);
721 
722  /* Handle non-option arguments */
723  fn = argv[0];
724 
725  if (!fn) {
726  free(argv);
727  usage_exit();
728  }
729  /* Open file */
730  infile = strcmp(fn, "-") ? fopen(fn, "rb") : set_binary_mode(stdin);
731 
732  if (!infile) {
733  fatal("Failed to open input file '%s'", strcmp(fn, "-") ? fn : "stdin");
734  }
735 #if CONFIG_OS_SUPPORT
736  /* Make sure we don't dump to the terminal, unless forced to with -o - */
737  if (!outfile_pattern && isatty(fileno(stdout)) && !do_md5 && !noblit) {
738  fprintf(stderr,
739  "Not dumping raw video to your terminal. Use '-o -' to "
740  "override.\n");
741  return EXIT_FAILURE;
742  }
743 #endif
744  input.vpx_input_ctx->file = infile;
745  if (file_is_ivf(input.vpx_input_ctx))
746  input.vpx_input_ctx->file_type = FILE_TYPE_IVF;
747 #if CONFIG_WEBM_IO
748  else if (file_is_webm(input.webm_ctx, input.vpx_input_ctx))
749  input.vpx_input_ctx->file_type = FILE_TYPE_WEBM;
750 #endif
751  else if (file_is_raw(input.vpx_input_ctx))
752  input.vpx_input_ctx->file_type = FILE_TYPE_RAW;
753  else {
754  fprintf(stderr, "Unrecognized input file type.\n");
755 #if !CONFIG_WEBM_IO
756  fprintf(stderr, "vpxdec was built without WebM container support.\n");
757 #endif
758  return EXIT_FAILURE;
759  }
760 
761  outfile_pattern = outfile_pattern ? outfile_pattern : "-";
762  single_file = is_single_file(outfile_pattern);
763 
764  if (!noblit && single_file) {
765  generate_filename(outfile_pattern, outfile_name, PATH_MAX,
766  vpx_input_ctx.width, vpx_input_ctx.height, 0);
767  if (do_md5)
768  MD5Init(&md5_ctx);
769  else
770  outfile = open_outfile(outfile_name);
771  }
772 
773  if (use_y4m && !noblit) {
774  if (!single_file) {
775  fprintf(stderr, "YUV4MPEG2 not supported with output patterns,"
776  " try --i420 or --yv12 or --rawvideo.\n");
777  return EXIT_FAILURE;
778  }
779 
780 #if CONFIG_WEBM_IO
781  if (vpx_input_ctx.file_type == FILE_TYPE_WEBM) {
782  if (webm_guess_framerate(input.webm_ctx, input.vpx_input_ctx)) {
783  fprintf(stderr, "Failed to guess framerate -- error parsing "
784  "webm file?\n");
785  return EXIT_FAILURE;
786  }
787  }
788 #endif
789  }
790 
791  fourcc_interface = get_vpx_decoder_by_fourcc(vpx_input_ctx.fourcc);
792  if (interface && fourcc_interface && interface != fourcc_interface)
793  warn("Header indicates codec: %s\n", fourcc_interface->name);
794  else
795  interface = fourcc_interface;
796 
797  if (!interface)
798  interface = get_vpx_decoder_by_index(0);
799 
800  dec_flags = (postproc ? VPX_CODEC_USE_POSTPROC : 0) |
801  (ec_enabled ? VPX_CODEC_USE_ERROR_CONCEALMENT : 0) |
802  (frame_parallel ? VPX_CODEC_USE_FRAME_THREADING : 0);
803  if (vpx_codec_dec_init(&decoder, interface->codec_interface(),
804  &cfg, dec_flags)) {
805  fprintf(stderr, "Failed to initialize decoder: %s\n",
806  vpx_codec_error(&decoder));
807  return EXIT_FAILURE;
808  }
809 
810  if (!quiet)
811  fprintf(stderr, "%s\n", decoder.name);
812 
813 #if CONFIG_VP8_DECODER
814  if (vp8_pp_cfg.post_proc_flag
815  && vpx_codec_control(&decoder, VP8_SET_POSTPROC, &vp8_pp_cfg)) {
816  fprintf(stderr, "Failed to configure postproc: %s\n",
817  vpx_codec_error(&decoder));
818  return EXIT_FAILURE;
819  }
820 
821  if (vp8_dbg_color_ref_frame
823  vp8_dbg_color_ref_frame)) {
824  fprintf(stderr, "Failed to configure reference block visualizer: %s\n",
825  vpx_codec_error(&decoder));
826  return EXIT_FAILURE;
827  }
828 
829  if (vp8_dbg_color_mb_modes
831  vp8_dbg_color_mb_modes)) {
832  fprintf(stderr, "Failed to configure macro block visualizer: %s\n",
833  vpx_codec_error(&decoder));
834  return EXIT_FAILURE;
835  }
836 
837  if (vp8_dbg_color_b_modes
839  vp8_dbg_color_b_modes)) {
840  fprintf(stderr, "Failed to configure block visualizer: %s\n",
841  vpx_codec_error(&decoder));
842  return EXIT_FAILURE;
843  }
844 
845  if (vp8_dbg_display_mv
847  vp8_dbg_display_mv)) {
848  fprintf(stderr, "Failed to configure motion vector visualizer: %s\n",
849  vpx_codec_error(&decoder));
850  return EXIT_FAILURE;
851  }
852 #endif
853 
854 
855  if (arg_skip)
856  fprintf(stderr, "Skipping first %d frames.\n", arg_skip);
857  while (arg_skip) {
858  if (read_frame(&input, &buf, &bytes_in_buffer, &buffer_size))
859  break;
860  arg_skip--;
861  }
862 
863  if (num_external_frame_buffers > 0) {
864  ext_fb_list.num_external_frame_buffers = num_external_frame_buffers;
865  ext_fb_list.ext_fb = (struct ExternalFrameBuffer *)calloc(
866  num_external_frame_buffers, sizeof(*ext_fb_list.ext_fb));
868  &decoder, get_vp9_frame_buffer, release_vp9_frame_buffer,
869  &ext_fb_list)) {
870  fprintf(stderr, "Failed to configure external frame buffers: %s\n",
871  vpx_codec_error(&decoder));
872  return EXIT_FAILURE;
873  }
874  }
875 
876  frame_avail = 1;
877  got_data = 0;
878 
879  /* Decode file */
880  while (frame_avail || got_data) {
881  vpx_codec_iter_t iter = NULL;
882  vpx_image_t *img;
883  struct vpx_usec_timer timer;
884  int corrupted = 0;
885 
886  frame_avail = 0;
887  if (!stop_after || frame_in < stop_after) {
888  if (!read_frame(&input, &buf, &bytes_in_buffer, &buffer_size)) {
889  frame_avail = 1;
890  frame_in++;
891 
892  vpx_usec_timer_start(&timer);
893 
894  if (vpx_codec_decode(&decoder, buf, (unsigned int)bytes_in_buffer,
895  NULL, 0)) {
896  const char *detail = vpx_codec_error_detail(&decoder);
897  warn("Failed to decode frame %d: %s",
898  frame_in, vpx_codec_error(&decoder));
899 
900  if (detail)
901  warn("Additional information: %s", detail);
902  if (!keep_going)
903  goto fail;
904  }
905 
906  vpx_usec_timer_mark(&timer);
907  dx_time += vpx_usec_timer_elapsed(&timer);
908  } else {
909  flush_decoder = 1;
910  }
911  } else {
912  flush_decoder = 1;
913  }
914 
915  vpx_usec_timer_start(&timer);
916 
917  if (flush_decoder) {
918  // Flush the decoder in frame parallel decode.
919  if (vpx_codec_decode(&decoder, NULL, 0, NULL, 0)) {
920  warn("Failed to flush decoder: %s", vpx_codec_error(&decoder));
921  }
922  }
923 
924  got_data = 0;
925  if ((img = vpx_codec_get_frame(&decoder, &iter))) {
926  ++frame_out;
927  got_data = 1;
928  }
929 
930  vpx_usec_timer_mark(&timer);
931  dx_time += (unsigned int)vpx_usec_timer_elapsed(&timer);
932 
933  if (!frame_parallel &&
934  vpx_codec_control(&decoder, VP8D_GET_FRAME_CORRUPTED, &corrupted)) {
935  warn("Failed VP8_GET_FRAME_CORRUPTED: %s", vpx_codec_error(&decoder));
936  if (!keep_going)
937  goto fail;
938  }
939  frames_corrupted += corrupted;
940 
941  if (progress)
942  show_progress(frame_in, frame_out, dx_time);
943 
944  if (!noblit && img) {
945  const int PLANES_YUV[] = {VPX_PLANE_Y, VPX_PLANE_U, VPX_PLANE_V};
946  const int PLANES_YVU[] = {VPX_PLANE_Y, VPX_PLANE_V, VPX_PLANE_U};
947  const int *planes = flipuv ? PLANES_YVU : PLANES_YUV;
948 
949  if (do_scale) {
950  if (frame_out == 1) {
951  // If the output frames are to be scaled to a fixed display size then
952  // use the width and height specified in the container. If either of
953  // these is set to 0, use the display size set in the first frame
954  // header. If that is unavailable, use the raw decoded size of the
955  // first decoded frame.
956  int render_width = vpx_input_ctx.width;
957  int render_height = vpx_input_ctx.height;
958  if (!render_width || !render_height) {
959  int render_size[2];
961  render_size)) {
962  // As last resort use size of first frame as display size.
963  render_width = img->d_w;
964  render_height = img->d_h;
965  } else {
966  render_width = render_size[0];
967  render_height = render_size[1];
968  }
969  }
970  scaled_img = vpx_img_alloc(NULL, img->fmt, render_width,
971  render_height, 16);
972  scaled_img->bit_depth = img->bit_depth;
973  }
974 
975  if (img->d_w != scaled_img->d_w || img->d_h != scaled_img->d_h) {
976 #if CONFIG_LIBYUV
977  libyuv_scale(img, scaled_img, kFilterBox);
978  img = scaled_img;
979 #else
980  fprintf(stderr, "Failed to scale output frame: %s.\n"
981  "Scaling is disabled in this configuration. "
982  "To enable scaling, configure with --enable-libyuv\n",
983  vpx_codec_error(&decoder));
984  return EXIT_FAILURE;
985 #endif
986  }
987  }
988 #if CONFIG_VP9_HIGHBITDEPTH
989  // Default to codec bit depth if output bit depth not set
990  if (!output_bit_depth && single_file && !do_md5) {
991  output_bit_depth = img->bit_depth;
992  }
993  // Shift up or down if necessary
994  if (output_bit_depth != 0 && output_bit_depth != img->bit_depth) {
995  const vpx_img_fmt_t shifted_fmt = output_bit_depth == 8 ?
996  img->fmt ^ (img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) :
998  if (img_shifted &&
999  img_shifted_realloc_required(img, img_shifted, shifted_fmt)) {
1000  vpx_img_free(img_shifted);
1001  img_shifted = NULL;
1002  }
1003  if (!img_shifted) {
1004  img_shifted = vpx_img_alloc(NULL, shifted_fmt,
1005  img->d_w, img->d_h, 16);
1006  img_shifted->bit_depth = output_bit_depth;
1007  }
1008  if (output_bit_depth > img->bit_depth) {
1009  vpx_img_upshift(img_shifted, img,
1010  output_bit_depth - img->bit_depth);
1011  } else {
1012  vpx_img_downshift(img_shifted, img,
1013  img->bit_depth - output_bit_depth);
1014  }
1015  img = img_shifted;
1016  }
1017 #endif
1018 
1019  if (single_file) {
1020  if (use_y4m) {
1021  char buf[Y4M_BUFFER_SIZE] = {0};
1022  size_t len = 0;
1023  if (img->fmt == VPX_IMG_FMT_I440 || img->fmt == VPX_IMG_FMT_I44016) {
1024  fprintf(stderr, "Cannot produce y4m output for 440 sampling.\n");
1025  goto fail;
1026  }
1027  if (frame_out == 1) {
1028  // Y4M file header
1029  len = y4m_write_file_header(buf, sizeof(buf),
1030  vpx_input_ctx.width,
1031  vpx_input_ctx.height,
1032  &vpx_input_ctx.framerate,
1033  img->fmt, img->bit_depth);
1034  if (do_md5) {
1035  MD5Update(&md5_ctx, (md5byte *)buf, (unsigned int)len);
1036  } else {
1037  fputs(buf, outfile);
1038  }
1039  }
1040 
1041  // Y4M frame header
1042  len = y4m_write_frame_header(buf, sizeof(buf));
1043  if (do_md5) {
1044  MD5Update(&md5_ctx, (md5byte *)buf, (unsigned int)len);
1045  } else {
1046  fputs(buf, outfile);
1047  }
1048  } else {
1049  if (frame_out == 1) {
1050  // Check if --yv12 or --i420 options are consistent with the
1051  // bit-stream decoded
1052  if (opt_i420) {
1053  if (img->fmt != VPX_IMG_FMT_I420 &&
1054  img->fmt != VPX_IMG_FMT_I42016) {
1055  fprintf(stderr, "Cannot produce i420 output for bit-stream.\n");
1056  goto fail;
1057  }
1058  }
1059  if (opt_yv12) {
1060  if ((img->fmt != VPX_IMG_FMT_I420 &&
1061  img->fmt != VPX_IMG_FMT_YV12) || img->bit_depth != 8) {
1062  fprintf(stderr, "Cannot produce yv12 output for bit-stream.\n");
1063  goto fail;
1064  }
1065  }
1066  }
1067  }
1068 
1069  if (do_md5) {
1070  update_image_md5(img, planes, &md5_ctx);
1071  } else {
1072  write_image_file(img, planes, outfile);
1073  }
1074  } else {
1075  generate_filename(outfile_pattern, outfile_name, PATH_MAX,
1076  img->d_w, img->d_h, frame_in);
1077  if (do_md5) {
1078  MD5Init(&md5_ctx);
1079  update_image_md5(img, planes, &md5_ctx);
1080  MD5Final(md5_digest, &md5_ctx);
1081  print_md5(md5_digest, outfile_name);
1082  } else {
1083  outfile = open_outfile(outfile_name);
1084  write_image_file(img, planes, outfile);
1085  fclose(outfile);
1086  }
1087  }
1088  }
1089  }
1090 
1091  if (summary || progress) {
1092  show_progress(frame_in, frame_out, dx_time);
1093  fprintf(stderr, "\n");
1094  }
1095 
1096  if (frames_corrupted)
1097  fprintf(stderr, "WARNING: %d frames corrupted.\n", frames_corrupted);
1098 
1099 fail:
1100 
1101  if (vpx_codec_destroy(&decoder)) {
1102  fprintf(stderr, "Failed to destroy decoder: %s\n",
1103  vpx_codec_error(&decoder));
1104  return EXIT_FAILURE;
1105  }
1106 
1107  if (!noblit && single_file) {
1108  if (do_md5) {
1109  MD5Final(md5_digest, &md5_ctx);
1110  print_md5(md5_digest, outfile_name);
1111  } else {
1112  fclose(outfile);
1113  }
1114  }
1115 
1116 #if CONFIG_WEBM_IO
1117  if (input.vpx_input_ctx->file_type == FILE_TYPE_WEBM)
1118  webm_free(input.webm_ctx);
1119 #endif
1120 
1121  if (input.vpx_input_ctx->file_type != FILE_TYPE_WEBM)
1122  free(buf);
1123 
1124  if (scaled_img) vpx_img_free(scaled_img);
1125 #if CONFIG_VP9_HIGHBITDEPTH
1126  if (img_shifted) vpx_img_free(img_shifted);
1127 #endif
1128 
1129  for (i = 0; i < ext_fb_list.num_external_frame_buffers; ++i) {
1130  free(ext_fb_list.ext_fb[i].data);
1131  }
1132  free(ext_fb_list.ext_fb);
1133 
1134  fclose(infile);
1135  free(argv);
1136 
1137  return frames_corrupted ? EXIT_FAILURE : EXIT_SUCCESS;
1138 }
1139 
1140 int main(int argc, const char **argv_) {
1141  unsigned int loops = 1, i;
1142  char **argv, **argi, **argj;
1143  struct arg arg;
1144  int error = 0;
1145 
1146  argv = argv_dup(argc - 1, argv_ + 1);
1147  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
1148  memset(&arg, 0, sizeof(arg));
1149  arg.argv_step = 1;
1150 
1151  if (arg_match(&arg, &looparg, argi)) {
1152  loops = arg_parse_uint(&arg);
1153  break;
1154  }
1155  }
1156  free(argv);
1157  for (i = 0; !error && i < loops; i++)
1158  error = main_loop(argc, argv_);
1159  return error;
1160 }
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:95
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:73
#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