62#include "../tools_common.h" 
   63#include "../video_reader.h" 
   64#include "./vpx_config.h" 
   66static const char *exec_name;
 
   68void usage_exit(
void) {
 
   69  fprintf(stderr, 
"Usage: %s <infile> <outfile> <N-M|N/M>\n", exec_name);
 
   73int main(
int argc, 
char **argv) {
 
   77  const VpxInterface *decoder = NULL;
 
   78  VpxVideoReader *reader = NULL;
 
   79  const VpxVideoInfo *info = NULL;
 
   87  if (argc != 4) die(
"Invalid number of arguments.");
 
   89  reader = vpx_video_reader_open(argv[1]);
 
   90  if (!reader) die(
"Failed to open %s for reading.", argv[1]);
 
   92  if (!(outfile = fopen(argv[2], 
"wb")))
 
   93    die(
"Failed to open %s for writing.", argv[2]);
 
   95  n = (int)strtol(argv[3], &nptr, 0);
 
   96  m = (int)strtol(nptr + 1, NULL, 0);
 
   97  is_range = (*nptr == 
'-');
 
   98  if (!n || !m || (*nptr != 
'-' && *nptr != 
'/'))
 
   99    die(
"Couldn't parse pattern %s.\n", argv[3]);
 
  101  info = vpx_video_reader_get_info(reader);
 
  103  decoder = get_vpx_decoder_by_fourcc(info->codec_fourcc);
 
  104  if (!decoder) die(
"Unknown input codec.");
 
  109    die(
"Failed to initialize decoder.");
 
  111  while (vpx_video_reader_read_frame(reader)) {
 
  114    size_t frame_size = 0;
 
  116    const unsigned char *frame =
 
  117        vpx_video_reader_get_frame(reader, &frame_size);
 
  119      die_codec(&codec, 
"Failed to decode frame.");
 
  123    skip = (is_range && frame_cnt >= n && frame_cnt <= m) ||
 
  124           (!is_range && m - (frame_cnt - 1) % m <= n);
 
  130        vpx_img_write(img, outfile);
 
  138  printf(
"Processed %d frames.\n", frame_cnt);
 
  141  printf(
"Play: ffplay -f rawvideo -pix_fmt yuv420p -s %dx%d %s\n",
 
  142         info->frame_width, info->frame_height, argv[2]);
 
  144  vpx_video_reader_close(reader);
 
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.
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_dec_init(ctx, iface, cfg, flags)
Convenience macro for vpx_codec_dec_init_ver()
Definition vpx_decoder.h:143
vpx_image_t * vpx_codec_get_frame(vpx_codec_ctx_t *ctx, vpx_codec_iter_t *iter)
Decoded frames iterator.
Codec context structure.
Definition vpx_codec.h:200
Image Descriptor.
Definition vpx_image.h:76
Provides definitions for using VP8 or VP9 within the vpx Decoder interface.
Describes the decoder algorithm interface to applications.