Set the frame index table
Setting offsets to NULL and fill > 0 will allocate fill entries. Setting offsets
to NULL and fill to 0 will clear the index and free the allocated memory used by the index.
\param mh handle
\param offsets pointer to the index array
\param step one index byte offset advances this many MPEG frames
\param fill number of recorded index offsets; size of the array
\return MPG123_OK on success
Set the frame index table Setting offsets to NULL and fill > 0 will allocate fill entries. Setting offsets to NULL and fill to 0 will clear the index and free the allocated memory used by the index. \param mh handle \param offsets pointer to the index array \param step one index byte offset advances this many MPEG frames \param fill number of recorded index offsets; size of the array \return MPG123_OK on success