The pointer fp after the call to chromaprint_get_raw_fingerpoint() points to an array
of uint32_t whereas the current code assumed just a char stream. Thus when writing the
raw fingerprint, the output would be truncated by a factor of 4.
For reference the declaration of the function from chromaprint.h is:
int chromaprint_get_raw_fingerprint(ChromaprintContext *ctx, uint32_t **fingerprint, int *size);
switch (cpr->fp_format) {
case FINGERPRINT_RAW:
- avio_write(pb, fp, size);
+ avio_write(pb, fp, size * 4); //fp points to array of uint32_t
break;
case FINGERPRINT_COMPRESSED:
case FINGERPRINT_BASE64: