44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
|
|
dump_seekindex: Scan a mpeg file and dump its seek index.
|
|
|
|
This is example code only sensible to be considered in the public domain.
|
|
Initially written by Patrick Dehne.
|
|
*/
|
|
|
|
#include <mpg123.h>
|
|
#include <stdio.h>
|
|
#include <inttypes.h>
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
mpg123_handle *m;
|
|
off_t* offsets;
|
|
off_t step;
|
|
size_t fill, i;
|
|
|
|
if(argc != 2)
|
|
{
|
|
fprintf(stderr, "\nI will dump the frame index of an MPEG audio file.\n");
|
|
fprintf(stderr, "\nUsage: %s <mpeg audio file>\n\n", argv[0]);
|
|
return -1;
|
|
}
|
|
#if MPG123_API_VERSION < 46
|
|
// Newer versions of the library don't need that anymore, but it is safe
|
|
// to have the no-op call present for compatibility with old versions.
|
|
mpg123_init();
|
|
#endif
|
|
m = mpg123_new(NULL, NULL);
|
|
mpg123_param(m, MPG123_RESYNC_LIMIT, -1, 0);
|
|
mpg123_param(m, MPG123_INDEX_SIZE, -1, 0);
|
|
mpg123_open(m, argv[1]);
|
|
mpg123_scan(m);
|
|
|
|
mpg123_index(m, &offsets, &step, &fill);
|
|
for(i=0; i<fill;i++) {
|
|
printf("Frame number %"PRIiMAX": file offset %"PRIiMAX"\n", (intmax_t)(i * step), (intmax_t)offsets[i]);
|
|
}
|
|
|
|
mpg123_close(m);
|
|
mpg123_delete(m);
|
|
return 0;
|
|
}
|