#include #include #include "audio_out.h" #include "audio_out_internal.h" static ao_info_t info = { "Null audio output", "null", "A'rpi", "" }; LIBAO_EXTERN(null) // to set/get/query special features/parameters static int control(int cmd,int arg){ return -1; } // open & setup audio device // return: 1=success 0=fail static int init(int rate,int channels,int format,int flags){ ao_data.outburst=4096; return 0; } // close audio device static void uninit(){ } // stop playing and empty buffers (for seeking/pause) static void reset(){ } // stop playing, keep buffers (for pause) static void audio_pause() { // for now, just call reset(); reset(); } // resume playing, after audio_pause() static void audio_resume() { } // return: how many bytes can be played without blocking static int get_space(){ return ao_data.outburst; } // plays 'len' bytes of 'data' // it should round it down to outburst*n // return: number of bytes played static int play(void* data,int len,int flags){ return len; } // return: delay in seconds between first and last sample in buffer static float get_delay(){ return 0.0; }