int file_is_raw(struct VpxInputContext *input) {
uint8_t buf[32];
int is_raw = 0;
vpx_codec_stream_info_t si;
si.sz = sizeof(si);
if (fread(buf, 1, 32, input->file) == 32) {
int i;
if (mem_get_le32(buf) < 256 * 1024 * 1024) {
for (i = 0; i < get_vpx_decoder_count(); ++i) {
const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
if (!vpx_codec_peek_stream_info(decoder->interface(),
buf + 4, 32 - 4, &si)) {
is_raw = 1;
input->fourcc = decoder->fourcc;
input->width = si.w;
input->height = si.h;
input->framerate.numerator = 30;
input->framerate.denominator = 1;
break;
}
}
}
}
rewind(input->file);
return is_raw;
}
void usage_exit() {
int i;
fprintf(stderr, "Usage: %s <options> filename\n\n"
"Options:\n", exec_name);
arg_show_usage(stderr, all_args);
#if CONFIG_VP8_DECODER
fprintf(stderr, "\nVP8 Postprocessing Options:\n");
arg_show_usage(stderr, vp8_pp_args);
#endif
fprintf(stderr,
"\nOutput File Patterns:\n\n"
" The -o argument specifies the name of the file(s) to "
"write to. If the\n argument does not include any escape "
"characters, the output will be\n written to a single file. "
"Otherwise, the filename will be calculated by\n expanding "
"the following escape characters:\n");
fprintf(stderr,
"\n\t%%w - Frame width"
"\n\t%%h - Frame height"
"\n\t%%<n> - Frame number, zero padded to <n> places (1..9)"
"\n\n Pattern arguments are only supported in conjunction "
"with the --yv12 and\n --i420 options. If the -o option is "
"not specified, the output will be\n directed to stdout.\n"
);
fprintf(stderr, "\nIncluded decoders:\n\n");
for (i = 0; i < get_vpx_decoder_count(); ++i) {
const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
fprintf(stderr, " %-6s - %s\n",
decoder->name, vpx_codec_iface_name(decoder->interface()));
}
exit(EXIT_FAILURE);
}
const VpxInterface *get_vpx_decoder_by_fourcc(uint32_t fourcc) {
int i;
for (i = 0; i < get_vpx_decoder_count(); ++i) {
const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
if (decoder->fourcc == fourcc)
return decoder;
}
return NULL;
}
const VpxInterface *get_vpx_decoder_by_name(const char *name) {
int i;
for (i = 0; i < get_vpx_decoder_count(); ++i) {
const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
if (strcmp(decoder->name, name) == 0)
return decoder;
}
return NULL;
}
