static NoteDevice *
pcmConstruct (int errorLevel) {
NoteDevice *device;
if ((device = malloc(sizeof(*device)))) {
if ((device->pcm = openPcmDevice(errorLevel, opt_pcmDevice))) {
device->blockSize = getPcmBlockSize(device->pcm);
device->sampleRate = getPcmSampleRate(device->pcm);
device->channelCount = getPcmChannelCount(device->pcm);
device->amplitudeFormat = getPcmAmplitudeFormat(device->pcm);
device->blockUsed = 0;
if ((device->blockAddress = malloc(device->blockSize))) {
logMessage(LOG_DEBUG, "PCM enabled: blk=%d rate=%d chan=%d fmt=%d",
device->blockSize, device->sampleRate, device->channelCount, device->amplitudeFormat);
return device;
} else {
logMallocError();
}
closePcmDevice(device->pcm);
}
free(device);
} else {
logMallocError();
}
logMessage(LOG_DEBUG, "PCM not available");
return NULL;
}
int
setPcmSampleRate (PcmDevice *pcm, int rate) {
WAVEFORMATEX format = pcm->format;
format.nSamplesPerSec = rate;
if (!updateWaveOutFormat(pcm, &format, "setting PCM sample rate"))
return getPcmSampleRate(pcm);
else
return rate;
}
int
setPcmSampleRate (PcmDevice *pcm, int rate) {
int result;
pcm->sampleRate = rate;
if ((result = pcmAlsa_pcm_hw_params_set_rate_near(pcm->handle, pcm->hardwareParameters, &pcm->sampleRate, NULL)) < 0) {
logPcmError(LOG_ERR, "set rate near", result);
}
return getPcmSampleRate(pcm);
}
int
setPcmSampleRate (PcmDevice *pcm, int rate) {
if (ioctl(pcm->fileDescriptor, SNDCTL_DSP_SPEED, &rate) != -1) pcm->sampleRate = rate;
return getPcmSampleRate(pcm);
}
int
setPcmSampleRate (PcmDevice *pcm, int rate) {
pcm->parameters.format.rate = rate;
reconfigurePcmChannel(pcm, LOG_WARNING);
return getPcmSampleRate(pcm);
}
int
setPcmSampleRate (PcmDevice *pcm, int rate) {
return getPcmSampleRate(pcm);
}
