audio_output_alsa.c

audio_output_apply_hwparams audio_output_close audio_output_open audio_output_play audio_output_volume_adjust audio_output_volume_down audio_output_volume_open audio_output_volume_up channels devhnd elem mixhnd srate

int audio_output_play ( struct audio_file *  fd  )  Write data to the sound device. Definition at line 156 of file audio_output_alsa.c. { int16_t buf[8192]; snd_pcm_sframes_t ret, len, done = 0; if ((len = audio_file_read(fd, buf, sizeof buf / sizeof(int16_t))) == 0) return (-1); if (fd->channels != channels || fd->srate != srate) { /* Apply the new values */ channels = fd->channels; srate = fd->srate; if (audio_output_apply_hwparams() != 0) { gui_msgbar_warn(_("Sample rate or amount of channels not supported.")); /* Invalidate the old settings */ srate = 0; return (-1); } } /* ALSA measures in sample lengths */ len /= fd->channels; /* Our complex error handling for snd_pcm_writei() */ while (done < len) { ret = snd_pcm_writei(devhnd, buf + (done * fd->channels), len - done); if (ret == -EPIPE) { /* Buffer underrun. Try again. */ if (snd_pcm_prepare(devhnd) != 0) return (-1); continue; } else if (ret <= 0) { /* Some other strange error. */ return (-1); } done += ret; } return (0); } Here is the call graph for this function: