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

static int audio_output_apply_hwparams ( void   )  [static] Alter the audio output parameters of the audio output device. Definition at line 67 of file audio_output_alsa.c. { snd_pcm_hw_params_t *devparam; snd_pcm_hw_params_alloca(&devparam); /* Acquire the standard parameters */ if (snd_pcm_hw_params_any(devhnd, devparam) != 0) return (-1); /* Set the access method - XXX: mmap */ if (snd_pcm_hw_params_set_access(devhnd, devparam, SND_PCM_ACCESS_RW_INTERLEAVED) != 0) return (-1); /* Output format */ if (snd_pcm_hw_params_set_format(devhnd, devparam, SND_PCM_FORMAT_S16) != 0) return (-1); /* Sample rate */ if (snd_pcm_hw_params_set_rate_near(devhnd, devparam, &srate, NULL) != 0) return (-1); /* Channels */ if (snd_pcm_hw_params_set_channels(devhnd, devparam, channels) != 0) return (-1); /* Drain current data and make sure we aren't underrun */ snd_pcm_drain(devhnd); /* Apply values */ if (snd_pcm_hw_params(devhnd, devparam) != 0) return (-1); return (0); } Here is the caller graph for this function: