*
* This function should write up to @p *nsamples samples of data at
* @p dst, and return the number of samples written, or -1 if some error
* occurred. It will be called in a background thread.
*/
typedef int alsa_bg_supply(void *dst,
*
* This function should write up to @p *nsamples samples of data at
* @p dst, and return the number of samples written, or -1 if some error
* occurred. It will be called in a background thread.
*/
typedef int alsa_bg_supply(void *dst,