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 <limits.h>
13 #include <stdarg.h>
14 #include <stdio.h>
15 #include <stdlib.h>
16 #include <string.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 help =
51  ARG_DEF(NULL, "help", 0, "Show usage options and exit");
52 static const arg_def_t looparg =
53  ARG_DEF(NULL, "loops", 1, "Number of times to decode the file");
54 static const arg_def_t codecarg = ARG_DEF(NULL, "codec", 1, "Codec to use");
55 static const arg_def_t use_yv12 =
56  ARG_DEF(NULL, "yv12", 0, "Output raw YV12 frames");
57 static const arg_def_t use_i420 =
58  ARG_DEF(NULL, "i420", 0, "Output raw I420 frames");
59 static const arg_def_t flipuvarg =
60  ARG_DEF(NULL, "flipuv", 0, "Flip the chroma planes in the output");
61 static const arg_def_t rawvideo =
62  ARG_DEF(NULL, "rawvideo", 0, "Output raw YUV frames");
63 static const arg_def_t noblitarg =
64  ARG_DEF(NULL, "noblit", 0, "Don't process the decoded frames");
65 static const arg_def_t progressarg =
66  ARG_DEF(NULL, "progress", 0, "Show progress after each frame decodes");
67 static const arg_def_t limitarg =
68  ARG_DEF(NULL, "limit", 1, "Stop decoding after n frames");
69 static const arg_def_t skiparg =
70  ARG_DEF(NULL, "skip", 1, "Skip the first n input frames");
71 static const arg_def_t postprocarg =
72  ARG_DEF(NULL, "postproc", 0, "Postprocess decoded frames");
73 static const arg_def_t summaryarg =
74  ARG_DEF(NULL, "summary", 0, "Show timing summary");
75 static const arg_def_t outputfile =
76  ARG_DEF("o", "output", 1, "Output file name pattern (see below)");
77 static const arg_def_t threadsarg =
78  ARG_DEF("t", "threads", 1, "Max threads to use");
79 static const arg_def_t frameparallelarg =
80  ARG_DEF(NULL, "frame-parallel", 0, "Frame parallel decode (ignored)");
81 static const arg_def_t verbosearg =
82  ARG_DEF("v", "verbose", 0, "Show version string");
83 static const arg_def_t error_concealment =
84  ARG_DEF(NULL, "error-concealment", 0, "Enable decoder error-concealment");
85 static const arg_def_t scalearg =
86  ARG_DEF("S", "scale", 0, "Scale output frames uniformly");
87 static const arg_def_t continuearg =
88  ARG_DEF("k", "keep-going", 0, "(debug) Continue decoding after error");
89 static const arg_def_t fb_arg =
90  ARG_DEF(NULL, "frame-buffers", 1, "Number of frame buffers to use");
91 static const arg_def_t md5arg =
92  ARG_DEF(NULL, "md5", 0, "Compute the MD5 sum of the decoded frame");
93 #if CONFIG_VP9_HIGHBITDEPTH
94 static const arg_def_t outbitdeptharg =
95  ARG_DEF(NULL, "output-bit-depth", 1, "Output bit-depth for decoded frames");
96 #endif
97 static const arg_def_t svcdecodingarg = ARG_DEF(
98  NULL, "svc-decode-layer", 1, "Decode SVC stream up to given spatial layer");
99 static const arg_def_t framestatsarg =
100  ARG_DEF(NULL, "framestats", 1, "Output per-frame stats (.csv format)");
101 static const arg_def_t rowmtarg =
102  ARG_DEF(NULL, "row-mt", 1, "Enable multi-threading to run row-wise in VP9");
103 static const arg_def_t lpfoptarg =
104  ARG_DEF(NULL, "lpf-opt", 1,
105  "Do loopfilter without waiting for all threads to sync.");
106 
107 static const arg_def_t *all_args[] = { &help,
108  &codecarg,
109  &use_yv12,
110  &use_i420,
111  &flipuvarg,
112  &rawvideo,
113  &noblitarg,
114  &progressarg,
115  &limitarg,
116  &skiparg,
117  &postprocarg,
118  &summaryarg,
119  &outputfile,
120  &threadsarg,
121  &frameparallelarg,
122  &verbosearg,
123  &scalearg,
124  &fb_arg,
125  &md5arg,
126  &error_concealment,
127  &continuearg,
128 #if CONFIG_VP9_HIGHBITDEPTH
129  &outbitdeptharg,
130 #endif
131  &svcdecodingarg,
132  &framestatsarg,
133  &rowmtarg,
134  &lpfoptarg,
135  NULL };
136 
137 #if CONFIG_VP8_DECODER
138 static const arg_def_t addnoise_level =
139  ARG_DEF(NULL, "noise-level", 1, "Enable VP8 postproc add noise");
140 static const arg_def_t deblock =
141  ARG_DEF(NULL, "deblock", 0, "Enable VP8 deblocking");
142 static const arg_def_t demacroblock_level = ARG_DEF(
143  NULL, "demacroblock-level", 1, "Enable VP8 demacroblocking, w/ level");
144 static const arg_def_t mfqe =
145  ARG_DEF(NULL, "mfqe", 0, "Enable multiframe quality enhancement");
146 
147 static const arg_def_t *vp8_pp_args[] = { &addnoise_level, &deblock,
148  &demacroblock_level, &mfqe, NULL };
149 #endif
150 
151 #if CONFIG_LIBYUV
152 static INLINE int libyuv_scale(vpx_image_t *src, vpx_image_t *dst,
153  FilterModeEnum mode) {
154 #if CONFIG_VP9_HIGHBITDEPTH
155  if (src->fmt == VPX_IMG_FMT_I42016) {
156  assert(dst->fmt == VPX_IMG_FMT_I42016);
157  return I420Scale_16(
158  (uint16_t *)src->planes[VPX_PLANE_Y], src->stride[VPX_PLANE_Y] / 2,
159  (uint16_t *)src->planes[VPX_PLANE_U], src->stride[VPX_PLANE_U] / 2,
160  (uint16_t *)src->planes[VPX_PLANE_V], src->stride[VPX_PLANE_V] / 2,
161  src->d_w, src->d_h, (uint16_t *)dst->planes[VPX_PLANE_Y],
162  dst->stride[VPX_PLANE_Y] / 2, (uint16_t *)dst->planes[VPX_PLANE_U],
163  dst->stride[VPX_PLANE_U] / 2, (uint16_t *)dst->planes[VPX_PLANE_V],
164  dst->stride[VPX_PLANE_V] / 2, dst->d_w, dst->d_h, mode);
165  }
166 #endif
167  assert(src->fmt == VPX_IMG_FMT_I420);
168  assert(dst->fmt == VPX_IMG_FMT_I420);
169  return I420Scale(src->planes[VPX_PLANE_Y], src->stride[VPX_PLANE_Y],
170  src->planes[VPX_PLANE_U], src->stride[VPX_PLANE_U],
171  src->planes[VPX_PLANE_V], src->stride[VPX_PLANE_V], src->d_w,
172  src->d_h, dst->planes[VPX_PLANE_Y], dst->stride[VPX_PLANE_Y],
173  dst->planes[VPX_PLANE_U], dst->stride[VPX_PLANE_U],
174  dst->planes[VPX_PLANE_V], dst->stride[VPX_PLANE_V], dst->d_w,
175  dst->d_h, mode);
176 }
177 #endif
178 static void show_help(FILE *fout, int shorthelp) {
179  int i;
180 
181  fprintf(fout, "Usage: %s <options> filename\n\n", exec_name);
182 
183  if (shorthelp) {
184  fprintf(fout, "Use --help to see the full list of options.\n");
185  return;
186  }
187 
188  fprintf(fout, "Options:\n");
189  arg_show_usage(fout, all_args);
190 #if CONFIG_VP8_DECODER
191  fprintf(fout, "\nVP8 Postprocessing Options:\n");
192  arg_show_usage(fout, vp8_pp_args);
193 #endif
194  fprintf(fout,
195  "\nOutput File Patterns:\n\n"
196  " The -o argument specifies the name of the file(s) to "
197  "write to. If the\n argument does not include any escape "
198  "characters, the output will be\n written to a single file. "
199  "Otherwise, the filename will be calculated by\n expanding "
200  "the following escape characters:\n");
201  fprintf(fout,
202  "\n\t%%w - Frame width"
203  "\n\t%%h - Frame height"
204  "\n\t%%<n> - Frame number, zero padded to <n> places (1..9)"
205  "\n\n Pattern arguments are only supported in conjunction "
206  "with the --yv12 and\n --i420 options. If the -o option is "
207  "not specified, the output will be\n directed to stdout.\n");
208  fprintf(fout, "\nIncluded decoders:\n\n");
209 
210  for (i = 0; i < get_vpx_decoder_count(); ++i) {
211  const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
212  fprintf(fout, " %-6s - %s\n", decoder->name,
213  vpx_codec_iface_name(decoder->codec_interface()));
214  }
215 }
216 
217 void usage_exit(void) {
218  show_help(stderr, 1);
219  exit(EXIT_FAILURE);
220 }
221 
222 static int raw_read_frame(FILE *infile, uint8_t **buffer, size_t *bytes_read,
223  size_t *buffer_size) {
224  char raw_hdr[RAW_FRAME_HDR_SZ];
225  size_t frame_size = 0;
226 
227  if (fread(raw_hdr, RAW_FRAME_HDR_SZ, 1, infile) != 1) {
228  if (!feof(infile)) warn("Failed to read RAW frame size\n");
229  } else {
230  const size_t kCorruptFrameThreshold = 256 * 1024 * 1024;
231  const size_t kFrameTooSmallThreshold = 256 * 1024;
232  frame_size = mem_get_le32(raw_hdr);
233 
234  if (frame_size > kCorruptFrameThreshold) {
235  warn("Read invalid frame size (%u)\n", (unsigned int)frame_size);
236  frame_size = 0;
237  }
238 
239  if (frame_size < kFrameTooSmallThreshold) {
240  warn("Warning: Read invalid frame size (%u) - not a raw file?\n",
241  (unsigned int)frame_size);
242  }
243 
244  if (frame_size > *buffer_size) {
245  uint8_t *new_buf = realloc(*buffer, 2 * frame_size);
246  if (new_buf) {
247  *buffer = new_buf;
248  *buffer_size = 2 * frame_size;
249  } else {
250  warn("Failed to allocate compressed data buffer\n");
251  frame_size = 0;
252  }
253  }
254  }
255 
256  if (!feof(infile)) {
257  if (fread(*buffer, 1, frame_size, infile) != frame_size) {
258  warn("Failed to read full frame\n");
259  return 1;
260  }
261  *bytes_read = frame_size;
262  return 0;
263  }
264 
265  return 1;
266 }
267 
268 static int dec_read_frame(struct VpxDecInputContext *input, uint8_t **buf,
269  size_t *bytes_in_buffer, size_t *buffer_size) {
270  switch (input->vpx_input_ctx->file_type) {
271 #if CONFIG_WEBM_IO
272  case FILE_TYPE_WEBM:
273  return webm_read_frame(input->webm_ctx, buf, bytes_in_buffer);
274 #endif
275  case FILE_TYPE_RAW:
276  return raw_read_frame(input->vpx_input_ctx->file, buf, bytes_in_buffer,
277  buffer_size);
278  case FILE_TYPE_IVF:
279  return ivf_read_frame(input->vpx_input_ctx->file, buf, bytes_in_buffer,
280  buffer_size);
281  default: return 1;
282  }
283 }
284 
285 static void update_image_md5(const vpx_image_t *img, const int planes[3],
286  MD5Context *md5) {
287  int i, y;
288 
289  for (i = 0; i < 3; ++i) {
290  const int plane = planes[i];
291  const unsigned char *buf = img->planes[plane];
292  const int stride = img->stride[plane];
293  const int w = vpx_img_plane_width(img, plane) *
294  ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
295  const int h = vpx_img_plane_height(img, plane);
296 
297  for (y = 0; y < h; ++y) {
298  MD5Update(md5, buf, w);
299  buf += stride;
300  }
301  }
302 }
303 
304 static void write_image_file(const vpx_image_t *img, const int planes[3],
305  FILE *file) {
306  int i, y;
307 #if CONFIG_VP9_HIGHBITDEPTH
308  const int bytes_per_sample = ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
309 #else
310  const int bytes_per_sample = 1;
311 #endif
312 
313  for (i = 0; i < 3; ++i) {
314  const int plane = planes[i];
315  const unsigned char *buf = img->planes[plane];
316  const int stride = img->stride[plane];
317  const int w = vpx_img_plane_width(img, plane);
318  const int h = vpx_img_plane_height(img, plane);
319 
320  for (y = 0; y < h; ++y) {
321  fwrite(buf, bytes_per_sample, w, file);
322  buf += stride;
323  }
324  }
325 }
326 
327 static int file_is_raw(struct VpxInputContext *input) {
328  uint8_t buf[32];
329  int is_raw = 0;
331 
332  si.sz = sizeof(si);
333 
334  if (fread(buf, 1, 32, input->file) == 32) {
335  int i;
336 
337  if (mem_get_le32(buf) < 256 * 1024 * 1024) {
338  for (i = 0; i < get_vpx_decoder_count(); ++i) {
339  const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
340  if (!vpx_codec_peek_stream_info(decoder->codec_interface(), buf + 4,
341  32 - 4, &si)) {
342  is_raw = 1;
343  input->fourcc = decoder->fourcc;
344  input->width = si.w;
345  input->height = si.h;
346  input->framerate.numerator = 30;
347  input->framerate.denominator = 1;
348  break;
349  }
350  }
351  }
352  }
353 
354  rewind(input->file);
355  return is_raw;
356 }
357 
358 static void show_progress(int frame_in, int frame_out, uint64_t dx_time) {
359  fprintf(stderr,
360  "%d decoded frames/%d showed frames in %" PRId64 " us (%.2f fps)\r",
361  frame_in, frame_out, dx_time,
362  (double)frame_out * 1000000.0 / (double)dx_time);
363 }
364 
365 struct ExternalFrameBuffer {
366  uint8_t *data;
367  size_t size;
368  int in_use;
369 };
370 
371 struct ExternalFrameBufferList {
372  int num_external_frame_buffers;
373  struct ExternalFrameBuffer *ext_fb;
374 };
375 
376 // Callback used by libvpx to request an external frame buffer. |cb_priv|
377 // Application private data passed into the set function. |min_size| is the
378 // minimum size in bytes needed to decode the next frame. |fb| pointer to the
379 // frame buffer.
380 static int get_vp9_frame_buffer(void *cb_priv, size_t min_size,
382  int i;
383  struct ExternalFrameBufferList *const ext_fb_list =
384  (struct ExternalFrameBufferList *)cb_priv;
385  if (ext_fb_list == NULL) return -1;
386 
387  // Find a free frame buffer.
388  for (i = 0; i < ext_fb_list->num_external_frame_buffers; ++i) {
389  if (!ext_fb_list->ext_fb[i].in_use) break;
390  }
391 
392  if (i == ext_fb_list->num_external_frame_buffers) return -1;
393 
394  if (ext_fb_list->ext_fb[i].size < min_size) {
395  free(ext_fb_list->ext_fb[i].data);
396  ext_fb_list->ext_fb[i].data = (uint8_t *)calloc(min_size, sizeof(uint8_t));
397  if (!ext_fb_list->ext_fb[i].data) return -1;
398 
399  ext_fb_list->ext_fb[i].size = min_size;
400  }
401 
402  fb->data = ext_fb_list->ext_fb[i].data;
403  fb->size = ext_fb_list->ext_fb[i].size;
404  ext_fb_list->ext_fb[i].in_use = 1;
405 
406  // Set the frame buffer's private data to point at the external frame buffer.
407  fb->priv = &ext_fb_list->ext_fb[i];
408  return 0;
409 }
410 
411 // Callback used by libvpx when there are no references to the frame buffer.
412 // |cb_priv| user private data passed into the set function. |fb| pointer
413 // to the frame buffer.
414 static int release_vp9_frame_buffer(void *cb_priv,
416  struct ExternalFrameBuffer *const ext_fb =
417  (struct ExternalFrameBuffer *)fb->priv;
418  (void)cb_priv;
419  ext_fb->in_use = 0;
420  return 0;
421 }
422 
423 static void generate_filename(const char *pattern, char *out, size_t q_len,
424  unsigned int d_w, unsigned int d_h,
425  unsigned int frame_in) {
426  const char *p = pattern;
427  char *q = out;
428 
429  do {
430  char *next_pat = strchr(p, '%');
431 
432  if (p == next_pat) {
433  size_t pat_len;
434 
435  /* parse the pattern */
436  q[q_len - 1] = '\0';
437  switch (p[1]) {
438  case 'w': snprintf(q, q_len - 1, "%d", d_w); break;
439  case 'h': snprintf(q, q_len - 1, "%d", d_h); break;
440  case '1': snprintf(q, q_len - 1, "%d", frame_in); break;
441  case '2': snprintf(q, q_len - 1, "%02d", frame_in); break;
442  case '3': snprintf(q, q_len - 1, "%03d", frame_in); break;
443  case '4': snprintf(q, q_len - 1, "%04d", frame_in); break;
444  case '5': snprintf(q, q_len - 1, "%05d", frame_in); break;
445  case '6': snprintf(q, q_len - 1, "%06d", frame_in); break;
446  case '7': snprintf(q, q_len - 1, "%07d", frame_in); break;
447  case '8': snprintf(q, q_len - 1, "%08d", frame_in); break;
448  case '9': snprintf(q, q_len - 1, "%09d", frame_in); break;
449  default: die("Unrecognized pattern %%%c\n", p[1]); break;
450  }
451 
452  pat_len = strlen(q);
453  if (pat_len >= q_len - 1) die("Output filename too long.\n");
454  q += pat_len;
455  p += 2;
456  q_len -= pat_len;
457  } else {
458  size_t copy_len;
459 
460  /* copy the next segment */
461  if (!next_pat)
462  copy_len = strlen(p);
463  else
464  copy_len = next_pat - p;
465 
466  if (copy_len >= q_len - 1) die("Output filename too long.\n");
467 
468  memcpy(q, p, copy_len);
469  q[copy_len] = '\0';
470  q += copy_len;
471  p += copy_len;
472  q_len -= copy_len;
473  }
474  } while (*p);
475 }
476 
477 static int is_single_file(const char *outfile_pattern) {
478  const char *p = outfile_pattern;
479 
480  do {
481  p = strchr(p, '%');
482  if (p && p[1] >= '1' && p[1] <= '9')
483  return 0; // pattern contains sequence number, so it's not unique
484  if (p) p++;
485  } while (p);
486 
487  return 1;
488 }
489 
490 static void print_md5(unsigned char digest[16], const char *filename) {
491  int i;
492 
493  for (i = 0; i < 16; ++i) printf("%02x", digest[i]);
494  printf(" %s\n", filename);
495 }
496 
497 static FILE *open_outfile(const char *name) {
498  if (strcmp("-", name) == 0) {
499  set_binary_mode(stdout);
500  return stdout;
501  } else {
502  FILE *file = fopen(name, "wb");
503  if (!file) fatal("Failed to open output file '%s'", name);
504  return file;
505  }
506 }
507 
508 #if CONFIG_VP9_HIGHBITDEPTH
509 static int img_shifted_realloc_required(const vpx_image_t *img,
510  const vpx_image_t *shifted,
511  vpx_img_fmt_t required_fmt) {
512  return img->d_w != shifted->d_w || img->d_h != shifted->d_h ||
513  required_fmt != shifted->fmt;
514 }
515 #endif
516 
517 static int main_loop(int argc, const char **argv_) {
518  vpx_codec_ctx_t decoder;
519  char *fn = NULL;
520  int i;
521  int ret = EXIT_FAILURE;
522  uint8_t *buf = NULL;
523  size_t bytes_in_buffer = 0, buffer_size = 0;
524  FILE *infile;
525  int frame_in = 0, frame_out = 0, flipuv = 0, noblit = 0;
526  int do_md5 = 0, progress = 0;
527  int stop_after = 0, postproc = 0, summary = 0, quiet = 1;
528  int arg_skip = 0;
529  int ec_enabled = 0;
530  int keep_going = 0;
531  int enable_row_mt = 0;
532  int enable_lpf_opt = 0;
533  const VpxInterface *interface = NULL;
534  const VpxInterface *fourcc_interface = NULL;
535  uint64_t dx_time = 0;
536  struct arg arg;
537  char **argv, **argi, **argj;
538 
539  int single_file;
540  int use_y4m = 1;
541  int opt_yv12 = 0;
542  int opt_i420 = 0;
543  vpx_codec_dec_cfg_t cfg = { 0, 0, 0 };
544 #if CONFIG_VP9_HIGHBITDEPTH
545  unsigned int output_bit_depth = 0;
546 #endif
547  int svc_decoding = 0;
548  int svc_spatial_layer = 0;
549 #if CONFIG_VP8_DECODER
550  vp8_postproc_cfg_t vp8_pp_cfg = { 0, 0, 0 };
551 #endif
552  int frames_corrupted = 0;
553  int dec_flags = 0;
554  int do_scale = 0;
555  vpx_image_t *scaled_img = NULL;
556 #if CONFIG_VP9_HIGHBITDEPTH
557  vpx_image_t *img_shifted = NULL;
558 #endif
559  int frame_avail, got_data, flush_decoder = 0;
560  int num_external_frame_buffers = 0;
561  struct ExternalFrameBufferList ext_fb_list = { 0, NULL };
562 
563  const char *outfile_pattern = NULL;
564  char outfile_name[PATH_MAX] = { 0 };
565  FILE *outfile = NULL;
566 
567  FILE *framestats_file = NULL;
568 
569  MD5Context md5_ctx;
570  unsigned char md5_digest[16];
571 
572  struct VpxDecInputContext input = { NULL, NULL };
573  struct VpxInputContext vpx_input_ctx;
574 #if CONFIG_WEBM_IO
575  struct WebmInputContext webm_ctx;
576  memset(&(webm_ctx), 0, sizeof(webm_ctx));
577  input.webm_ctx = &webm_ctx;
578 #endif
579  input.vpx_input_ctx = &vpx_input_ctx;
580 
581  /* Parse command line */
582  exec_name = argv_[0];
583  argv = argv_dup(argc - 1, argv_ + 1);
584 
585  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
586  memset(&arg, 0, sizeof(arg));
587  arg.argv_step = 1;
588 
589  if (arg_match(&arg, &help, argi)) {
590  show_help(stdout, 0);
591  exit(EXIT_SUCCESS);
592  } else if (arg_match(&arg, &codecarg, argi)) {
593  interface = get_vpx_decoder_by_name(arg.val);
594  if (!interface)
595  die("Error: Unrecognized argument (%s) to --codec\n", arg.val);
596  } else if (arg_match(&arg, &looparg, argi)) {
597  // no-op
598  } else if (arg_match(&arg, &outputfile, argi))
599  outfile_pattern = arg.val;
600  else if (arg_match(&arg, &use_yv12, argi)) {
601  use_y4m = 0;
602  flipuv = 1;
603  opt_yv12 = 1;
604  } else if (arg_match(&arg, &use_i420, argi)) {
605  use_y4m = 0;
606  flipuv = 0;
607  opt_i420 = 1;
608  } else if (arg_match(&arg, &rawvideo, argi)) {
609  use_y4m = 0;
610  } else if (arg_match(&arg, &flipuvarg, argi))
611  flipuv = 1;
612  else if (arg_match(&arg, &noblitarg, argi))
613  noblit = 1;
614  else if (arg_match(&arg, &progressarg, argi))
615  progress = 1;
616  else if (arg_match(&arg, &limitarg, argi))
617  stop_after = arg_parse_uint(&arg);
618  else if (arg_match(&arg, &skiparg, argi))
619  arg_skip = arg_parse_uint(&arg);
620  else if (arg_match(&arg, &postprocarg, argi))
621  postproc = 1;
622  else if (arg_match(&arg, &md5arg, argi))
623  do_md5 = 1;
624  else if (arg_match(&arg, &summaryarg, argi))
625  summary = 1;
626  else if (arg_match(&arg, &threadsarg, argi))
627  cfg.threads = arg_parse_uint(&arg);
628 #if CONFIG_VP9_DECODER
629  else if (arg_match(&arg, &frameparallelarg, argi)) {
630  /* ignored for compatibility */
631  }
632 #endif
633  else if (arg_match(&arg, &verbosearg, argi))
634  quiet = 0;
635  else if (arg_match(&arg, &scalearg, argi))
636  do_scale = 1;
637  else if (arg_match(&arg, &fb_arg, argi))
638  num_external_frame_buffers = arg_parse_uint(&arg);
639  else if (arg_match(&arg, &continuearg, argi))
640  keep_going = 1;
641 #if CONFIG_VP9_HIGHBITDEPTH
642  else if (arg_match(&arg, &outbitdeptharg, argi)) {
643  output_bit_depth = arg_parse_uint(&arg);
644  }
645 #endif
646  else if (arg_match(&arg, &svcdecodingarg, argi)) {
647  svc_decoding = 1;
648  svc_spatial_layer = arg_parse_uint(&arg);
649  } else if (arg_match(&arg, &framestatsarg, argi)) {
650  framestats_file = fopen(arg.val, "w");
651  if (!framestats_file) {
652  die("Error: Could not open --framestats file (%s) for writing.\n",
653  arg.val);
654  }
655  } else if (arg_match(&arg, &rowmtarg, argi)) {
656  enable_row_mt = arg_parse_uint(&arg);
657  } else if (arg_match(&arg, &lpfoptarg, argi)) {
658  enable_lpf_opt = arg_parse_uint(&arg);
659  }
660 #if CONFIG_VP8_DECODER
661  else if (arg_match(&arg, &addnoise_level, argi)) {
662  postproc = 1;
663  vp8_pp_cfg.post_proc_flag |= VP8_ADDNOISE;
664  vp8_pp_cfg.noise_level = arg_parse_uint(&arg);
665  } else if (arg_match(&arg, &demacroblock_level, argi)) {
666  postproc = 1;
667  vp8_pp_cfg.post_proc_flag |= VP8_DEMACROBLOCK;
668  vp8_pp_cfg.deblocking_level = arg_parse_uint(&arg);
669  } else if (arg_match(&arg, &deblock, argi)) {
670  postproc = 1;
671  vp8_pp_cfg.post_proc_flag |= VP8_DEBLOCK;
672  } else if (arg_match(&arg, &mfqe, argi)) {
673  postproc = 1;
674  vp8_pp_cfg.post_proc_flag |= VP8_MFQE;
675  } else if (arg_match(&arg, &error_concealment, argi)) {
676  ec_enabled = 1;
677  }
678 #endif // CONFIG_VP8_DECODER
679  else
680  argj++;
681  }
682 
683  /* Check for unrecognized options */
684  for (argi = argv; *argi; argi++)
685  if (argi[0][0] == '-' && strlen(argi[0]) > 1)
686  die("Error: Unrecognized option %s\n", *argi);
687 
688  /* Handle non-option arguments */
689  fn = argv[0];
690 
691  if (!fn) {
692  free(argv);
693  fprintf(stderr, "No input file specified!\n");
694  usage_exit();
695  }
696  /* Open file */
697  infile = strcmp(fn, "-") ? fopen(fn, "rb") : set_binary_mode(stdin);
698 
699  if (!infile) {
700  fatal("Failed to open input file '%s'", strcmp(fn, "-") ? fn : "stdin");
701  }
702 #if CONFIG_OS_SUPPORT
703  /* Make sure we don't dump to the terminal, unless forced to with -o - */
704  if (!outfile_pattern && isatty(fileno(stdout)) && !do_md5 && !noblit) {
705  fprintf(stderr,
706  "Not dumping raw video to your terminal. Use '-o -' to "
707  "override.\n");
708  return EXIT_FAILURE;
709  }
710 #endif
711  input.vpx_input_ctx->file = infile;
712  if (file_is_ivf(input.vpx_input_ctx))
713  input.vpx_input_ctx->file_type = FILE_TYPE_IVF;
714 #if CONFIG_WEBM_IO
715  else if (file_is_webm(input.webm_ctx, input.vpx_input_ctx))
716  input.vpx_input_ctx->file_type = FILE_TYPE_WEBM;
717 #endif
718  else if (file_is_raw(input.vpx_input_ctx))
719  input.vpx_input_ctx->file_type = FILE_TYPE_RAW;
720  else {
721  fprintf(stderr, "Unrecognized input file type.\n");
722 #if !CONFIG_WEBM_IO
723  fprintf(stderr, "vpxdec was built without WebM container support.\n");
724 #endif
725  free(argv);
726  return EXIT_FAILURE;
727  }
728 
729  outfile_pattern = outfile_pattern ? outfile_pattern : "-";
730  single_file = is_single_file(outfile_pattern);
731 
732  if (!noblit && single_file) {
733  generate_filename(outfile_pattern, outfile_name, PATH_MAX,
734  vpx_input_ctx.width, vpx_input_ctx.height, 0);
735  if (do_md5)
736  MD5Init(&md5_ctx);
737  else
738  outfile = open_outfile(outfile_name);
739  }
740 
741  if (use_y4m && !noblit) {
742  if (!single_file) {
743  fprintf(stderr,
744  "YUV4MPEG2 not supported with output patterns,"
745  " try --i420 or --yv12 or --rawvideo.\n");
746  return EXIT_FAILURE;
747  }
748 
749 #if CONFIG_WEBM_IO
750  if (vpx_input_ctx.file_type == FILE_TYPE_WEBM) {
751  if (webm_guess_framerate(input.webm_ctx, input.vpx_input_ctx)) {
752  fprintf(stderr,
753  "Failed to guess framerate -- error parsing "
754  "webm file?\n");
755  return EXIT_FAILURE;
756  }
757  }
758 #endif
759  }
760 
761  fourcc_interface = get_vpx_decoder_by_fourcc(vpx_input_ctx.fourcc);
762  if (interface && fourcc_interface && interface != fourcc_interface)
763  warn("Header indicates codec: %s\n", fourcc_interface->name);
764  else
765  interface = fourcc_interface;
766 
767  if (!interface) interface = get_vpx_decoder_by_index(0);
768 
769  dec_flags = (postproc ? VPX_CODEC_USE_POSTPROC : 0) |
770  (ec_enabled ? VPX_CODEC_USE_ERROR_CONCEALMENT : 0);
771  if (vpx_codec_dec_init(&decoder, interface->codec_interface(), &cfg,
772  dec_flags)) {
773  fprintf(stderr, "Failed to initialize decoder: %s\n",
774  vpx_codec_error(&decoder));
775  goto fail2;
776  }
777  if (svc_decoding) {
779  svc_spatial_layer)) {
780  fprintf(stderr, "Failed to set spatial layer for svc decode: %s\n",
781  vpx_codec_error(&decoder));
782  goto fail;
783  }
784  }
785  if (interface->fourcc == VP9_FOURCC &&
786  vpx_codec_control(&decoder, VP9D_SET_ROW_MT, enable_row_mt)) {
787  fprintf(stderr, "Failed to set decoder in row multi-thread mode: %s\n",
788  vpx_codec_error(&decoder));
789  goto fail;
790  }
791  if (interface->fourcc == VP9_FOURCC &&
792  vpx_codec_control(&decoder, VP9D_SET_LOOP_FILTER_OPT, enable_lpf_opt)) {
793  fprintf(stderr, "Failed to set decoder in optimized loopfilter mode: %s\n",
794  vpx_codec_error(&decoder));
795  goto fail;
796  }
797  if (!quiet) fprintf(stderr, "%s\n", decoder.name);
798 
799 #if CONFIG_VP8_DECODER
800  if (vp8_pp_cfg.post_proc_flag &&
801  vpx_codec_control(&decoder, VP8_SET_POSTPROC, &vp8_pp_cfg)) {
802  fprintf(stderr, "Failed to configure postproc: %s\n",
803  vpx_codec_error(&decoder));
804  goto fail;
805  }
806 #endif
807 
808  if (arg_skip) fprintf(stderr, "Skipping first %d frames.\n", arg_skip);
809  while (arg_skip) {
810  if (dec_read_frame(&input, &buf, &bytes_in_buffer, &buffer_size)) break;
811  arg_skip--;
812  }
813 
814  if (num_external_frame_buffers > 0) {
815  ext_fb_list.num_external_frame_buffers = num_external_frame_buffers;
816  ext_fb_list.ext_fb = (struct ExternalFrameBuffer *)calloc(
817  num_external_frame_buffers, sizeof(*ext_fb_list.ext_fb));
818  if (vpx_codec_set_frame_buffer_functions(&decoder, get_vp9_frame_buffer,
819  release_vp9_frame_buffer,
820  &ext_fb_list)) {
821  fprintf(stderr, "Failed to configure external frame buffers: %s\n",
822  vpx_codec_error(&decoder));
823  goto fail;
824  }
825  }
826 
827  frame_avail = 1;
828  got_data = 0;
829 
830  if (framestats_file) fprintf(framestats_file, "bytes,qp\n");
831 
832  /* Decode file */
833  while (frame_avail || got_data) {
834  vpx_codec_iter_t iter = NULL;
835  vpx_image_t *img;
836  struct vpx_usec_timer timer;
837  int corrupted = 0;
838 
839  frame_avail = 0;
840  if (!stop_after || frame_in < stop_after) {
841  if (!dec_read_frame(&input, &buf, &bytes_in_buffer, &buffer_size)) {
842  frame_avail = 1;
843  frame_in++;
844 
845  vpx_usec_timer_start(&timer);
846 
847  if (vpx_codec_decode(&decoder, buf, (unsigned int)bytes_in_buffer, NULL,
848  0)) {
849  const char *detail = vpx_codec_error_detail(&decoder);
850  warn("Failed to decode frame %d: %s", frame_in,
851  vpx_codec_error(&decoder));
852  if (detail) warn("Additional information: %s", detail);
853  corrupted = 1;
854  if (!keep_going) goto fail;
855  }
856 
857  if (framestats_file) {
858  int qp;
859  if (vpx_codec_control(&decoder, VPXD_GET_LAST_QUANTIZER, &qp)) {
860  warn("Failed VPXD_GET_LAST_QUANTIZER: %s",
861  vpx_codec_error(&decoder));
862  if (!keep_going) goto fail;
863  }
864  fprintf(framestats_file, "%d,%d\n", (int)bytes_in_buffer, qp);
865  }
866 
867  vpx_usec_timer_mark(&timer);
868  dx_time += vpx_usec_timer_elapsed(&timer);
869  } else {
870  flush_decoder = 1;
871  }
872  } else {
873  flush_decoder = 1;
874  }
875 
876  vpx_usec_timer_start(&timer);
877 
878  if (flush_decoder) {
879  // Flush the decoder in frame parallel decode.
880  if (vpx_codec_decode(&decoder, NULL, 0, NULL, 0)) {
881  warn("Failed to flush decoder: %s", vpx_codec_error(&decoder));
882  corrupted = 1;
883  if (!keep_going) goto fail;
884  }
885  }
886 
887  got_data = 0;
888  if ((img = vpx_codec_get_frame(&decoder, &iter))) {
889  ++frame_out;
890  got_data = 1;
891  }
892 
893  vpx_usec_timer_mark(&timer);
894  dx_time += (unsigned int)vpx_usec_timer_elapsed(&timer);
895 
896  if (!corrupted &&
897  vpx_codec_control(&decoder, VP8D_GET_FRAME_CORRUPTED, &corrupted)) {
898  warn("Failed VP8_GET_FRAME_CORRUPTED: %s", vpx_codec_error(&decoder));
899  if (!keep_going) goto fail;
900  }
901  frames_corrupted += corrupted;
902 
903  if (progress) show_progress(frame_in, frame_out, dx_time);
904 
905  if (!noblit && img) {
906  const int PLANES_YUV[] = { VPX_PLANE_Y, VPX_PLANE_U, VPX_PLANE_V };
907  const int PLANES_YVU[] = { VPX_PLANE_Y, VPX_PLANE_V, VPX_PLANE_U };
908  const int *planes = flipuv ? PLANES_YVU : PLANES_YUV;
909 
910  if (do_scale) {
911  if (frame_out == 1) {
912  // If the output frames are to be scaled to a fixed display size then
913  // use the width and height specified in the container. If either of
914  // these is set to 0, use the display size set in the first frame
915  // header. If that is unavailable, use the raw decoded size of the
916  // first decoded frame.
917  int render_width = vpx_input_ctx.width;
918  int render_height = vpx_input_ctx.height;
919  if (!render_width || !render_height) {
920  int render_size[2];
922  render_size)) {
923  // As last resort use size of first frame as display size.
924  render_width = img->d_w;
925  render_height = img->d_h;
926  } else {
927  render_width = render_size[0];
928  render_height = render_size[1];
929  }
930  }
931  scaled_img =
932  vpx_img_alloc(NULL, img->fmt, render_width, render_height, 16);
933  scaled_img->bit_depth = img->bit_depth;
934  }
935 
936  if (img->d_w != scaled_img->d_w || img->d_h != scaled_img->d_h) {
937 #if CONFIG_LIBYUV
938  libyuv_scale(img, scaled_img, kFilterBox);
939  img = scaled_img;
940 #else
941  fprintf(stderr,
942  "Failed to scale output frame: %s.\n"
943  "Scaling is disabled in this configuration. "
944  "To enable scaling, configure with --enable-libyuv\n",
945  vpx_codec_error(&decoder));
946  goto fail;
947 #endif
948  }
949  }
950 #if CONFIG_VP9_HIGHBITDEPTH
951  // Default to codec bit depth if output bit depth not set
952  if (!output_bit_depth && single_file && !do_md5) {
953  output_bit_depth = img->bit_depth;
954  }
955  // Shift up or down if necessary
956  if (output_bit_depth != 0 && output_bit_depth != img->bit_depth) {
957  const vpx_img_fmt_t shifted_fmt =
958  output_bit_depth == 8
959  ? img->fmt ^ (img->fmt & VPX_IMG_FMT_HIGHBITDEPTH)
960  : img->fmt | VPX_IMG_FMT_HIGHBITDEPTH;
961  if (img_shifted &&
962  img_shifted_realloc_required(img, img_shifted, shifted_fmt)) {
963  vpx_img_free(img_shifted);
964  img_shifted = NULL;
965  }
966  if (!img_shifted) {
967  img_shifted =
968  vpx_img_alloc(NULL, shifted_fmt, img->d_w, img->d_h, 16);
969  img_shifted->bit_depth = output_bit_depth;
970  }
971  if (output_bit_depth > img->bit_depth) {
972  vpx_img_upshift(img_shifted, img, output_bit_depth - img->bit_depth);
973  } else {
974  vpx_img_downshift(img_shifted, img,
975  img->bit_depth - output_bit_depth);
976  }
977  img = img_shifted;
978  }
979 #endif
980 
981  if (single_file) {
982  if (use_y4m) {
983  char buf[Y4M_BUFFER_SIZE] = { 0 };
984  size_t len = 0;
985  if (img->fmt == VPX_IMG_FMT_I440 || img->fmt == VPX_IMG_FMT_I44016) {
986  fprintf(stderr, "Cannot produce y4m output for 440 sampling.\n");
987  goto fail;
988  }
989  if (frame_out == 1) {
990  // Y4M file header
991  len = y4m_write_file_header(
992  buf, sizeof(buf), vpx_input_ctx.width, vpx_input_ctx.height,
993  &vpx_input_ctx.framerate, img->fmt, img->bit_depth);
994  if (do_md5) {
995  MD5Update(&md5_ctx, (md5byte *)buf, (unsigned int)len);
996  } else {
997  fputs(buf, outfile);
998  }
999  }
1000 
1001  // Y4M frame header
1002  len = y4m_write_frame_header(buf, sizeof(buf));
1003  if (do_md5) {
1004  MD5Update(&md5_ctx, (md5byte *)buf, (unsigned int)len);
1005  } else {
1006  fputs(buf, outfile);
1007  }
1008  } else {
1009  if (frame_out == 1) {
1010  // Check if --yv12 or --i420 options are consistent with the
1011  // bit-stream decoded
1012  if (opt_i420) {
1013  if (img->fmt != VPX_IMG_FMT_I420 &&
1014  img->fmt != VPX_IMG_FMT_I42016) {
1015  fprintf(stderr, "Cannot produce i420 output for bit-stream.\n");
1016  goto fail;
1017  }
1018  }
1019  if (opt_yv12) {
1020  if ((img->fmt != VPX_IMG_FMT_I420 &&
1021  img->fmt != VPX_IMG_FMT_YV12) ||
1022  img->bit_depth != 8) {
1023  fprintf(stderr, "Cannot produce yv12 output for bit-stream.\n");
1024  goto fail;
1025  }
1026  }
1027  }
1028  }
1029 
1030  if (do_md5) {
1031  update_image_md5(img, planes, &md5_ctx);
1032  } else {
1033  if (!corrupted) write_image_file(img, planes, outfile);
1034  }
1035  } else {
1036  generate_filename(outfile_pattern, outfile_name, PATH_MAX, img->d_w,
1037  img->d_h, frame_in);
1038  if (do_md5) {
1039  MD5Init(&md5_ctx);
1040  update_image_md5(img, planes, &md5_ctx);
1041  MD5Final(md5_digest, &md5_ctx);
1042  print_md5(md5_digest, outfile_name);
1043  } else {
1044  outfile = open_outfile(outfile_name);
1045  write_image_file(img, planes, outfile);
1046  fclose(outfile);
1047  }
1048  }
1049  }
1050  }
1051 
1052  if (summary || progress) {
1053  show_progress(frame_in, frame_out, dx_time);
1054  fprintf(stderr, "\n");
1055  }
1056 
1057  if (frames_corrupted) {
1058  fprintf(stderr, "WARNING: %d frames corrupted.\n", frames_corrupted);
1059  } else {
1060  ret = EXIT_SUCCESS;
1061  }
1062 
1063 fail:
1064 
1065  if (vpx_codec_destroy(&decoder)) {
1066  fprintf(stderr, "Failed to destroy decoder: %s\n",
1067  vpx_codec_error(&decoder));
1068  }
1069 
1070 fail2:
1071 
1072  if (!noblit && single_file) {
1073  if (do_md5) {
1074  MD5Final(md5_digest, &md5_ctx);
1075  print_md5(md5_digest, outfile_name);
1076  } else {
1077  fclose(outfile);
1078  }
1079  }
1080 
1081 #if CONFIG_WEBM_IO
1082  if (input.vpx_input_ctx->file_type == FILE_TYPE_WEBM)
1083  webm_free(input.webm_ctx);
1084 #endif
1085 
1086  if (input.vpx_input_ctx->file_type != FILE_TYPE_WEBM) free(buf);
1087 
1088  if (scaled_img) vpx_img_free(scaled_img);
1089 #if CONFIG_VP9_HIGHBITDEPTH
1090  if (img_shifted) vpx_img_free(img_shifted);
1091 #endif
1092 
1093  for (i = 0; i < ext_fb_list.num_external_frame_buffers; ++i) {
1094  free(ext_fb_list.ext_fb[i].data);
1095  }
1096  free(ext_fb_list.ext_fb);
1097 
1098  fclose(infile);
1099  if (framestats_file) fclose(framestats_file);
1100 
1101  free(argv);
1102 
1103  return ret;
1104 }
1105 
1106 int main(int argc, const char **argv_) {
1107  unsigned int loops = 1, i;
1108  char **argv, **argi, **argj;
1109  struct arg arg;
1110  int error = 0;
1111 
1112  argv = argv_dup(argc - 1, argv_ + 1);
1113  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
1114  memset(&arg, 0, sizeof(arg));
1115  arg.argv_step = 1;
1116 
1117  if (arg_match(&arg, &looparg, argi)) {
1118  loops = arg_parse_uint(&arg);
1119  break;
1120  }
1121  }
1122  free(argv);
1123  for (i = 0; !error && i < loops; i++) error = main_loop(argc, argv_);
1124  return error;
1125 }
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.
const char * vpx_codec_error_detail(vpx_codec_ctx_t *ctx)
Retrieve detailed error information for codec context.
const char * vpx_codec_error(vpx_codec_ctx_t *ctx)
Retrieve error synopsis for codec context.
vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx)
Destroy a codec instance.
const void * vpx_codec_iter_t
Iterator.
Definition: vpx_codec.h:190
const char * vpx_codec_iface_name(vpx_codec_iface_t *iface)
Return the name for a given interface.
#define vpx_codec_control(ctx, id, data)
vpx_codec_control wrapper macro
Definition: vpx_codec.h:407
vpx_image_t * vpx_codec_get_frame(vpx_codec_ctx_t *ctx, vpx_codec_iter_t *iter)
Decoded frames iterator.
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.
#define VPX_CODEC_USE_ERROR_CONCEALMENT
Conceal errors in decoded frames.
Definition: vpx_decoder.h:75
#define VPX_CODEC_USE_POSTPROC
Initialization-time Feature Enabling.
Definition: vpx_decoder.h:73
#define vpx_codec_dec_init(ctx, iface, cfg, flags)
Convenience macro for vpx_codec_dec_init_ver()
Definition: vpx_decoder.h:143
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.
@ VP9D_SET_ROW_MT
Codec control function to set row level multi-threading.
Definition: vp8dx.h:133
@ VP9D_SET_LOOP_FILTER_OPT
Codec control function to set loopfilter optimization.
Definition: vp8dx.h:143
@ VPXD_GET_LAST_QUANTIZER
Codec control function to get last decoded frame quantizer.
Definition: vp8dx.h:125
@ VP9_DECODE_SVC_SPATIAL_LAYER
Definition: vp8dx.h:117
@ VP9D_GET_DISPLAY_SIZE
Definition: vp8dx.h:85
@ VP8D_GET_FRAME_CORRUPTED
Definition: vp8dx.h:63
@ VP8_SET_POSTPROC
Definition: vp8.h:49
post process flags
Definition: vp8.h:79
int noise_level
Definition: vp8.h:84
int post_proc_flag
the types of post processing to be done, should be combination of "vp8_postproc_level"
Definition: vp8.h:82
int deblocking_level
Definition: vp8.h:83
Codec context structure.
Definition: vpx_codec.h:200
const char * name
Definition: vpx_codec.h:201
Initialization Configurations.
Definition: vpx_decoder.h:106
unsigned int threads
Definition: vpx_decoder.h:107
External frame buffer.
Definition: vpx_frame_buffer.h:39
void * priv
Definition: vpx_frame_buffer.h:42
size_t size
Definition: vpx_frame_buffer.h:41
uint8_t * data
Definition: vpx_frame_buffer.h:40
Stream properties.
Definition: vpx_decoder.h:88
unsigned int sz
Definition: vpx_decoder.h:89
unsigned int w
Definition: vpx_decoder.h:90
unsigned int h
Definition: vpx_decoder.h:91
Image Descriptor.
Definition: vpx_image.h:72
vpx_img_fmt_t fmt
Definition: vpx_image.h:73
unsigned int d_h
Definition: vpx_image.h:84
unsigned int d_w
Definition: vpx_image.h:83
unsigned int bit_depth
Definition: vpx_image.h:80
unsigned char * planes[4]
Definition: vpx_image.h:100
int stride[4]
Definition: vpx_image.h:101
Provides definitions for using VP8 or VP9 within the vpx Decoder interface.
Describes the decoder algorithm interface to applications.
#define VPX_PLANE_Y
Definition: vpx_image.h:96
#define VPX_IMG_FMT_HIGHBITDEPTH
Definition: vpx_image.h:35
#define VPX_PLANE_U
Definition: vpx_image.h:97
@ VPX_IMG_FMT_I44016
Definition: vpx_image.h:50
@ VPX_IMG_FMT_YV12
Definition: vpx_image.h:40
@ VPX_IMG_FMT_I42016
Definition: vpx_image.h:47
@ VPX_IMG_FMT_I440
Definition: vpx_image.h:45
@ VPX_IMG_FMT_I420
Definition: vpx_image.h:42
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.
#define VPX_PLANE_V
Definition: vpx_image.h:98
enum vpx_img_fmt vpx_img_fmt_t
List of supported image formats.
void vpx_img_free(vpx_image_t *img)
Close an image descriptor.