void MpPortAudioMixer::setOutputBalance(MpAudioBalance balance)
{
OsLock lock(MpPortAudioDriver::ms_driverMutex);
if (m_pxMixer)
{
Px_SetOutputBalance(m_pxMixer, balance);
}
}
int main(int argc, char **argv)
{
int num_mixers;
int i;
PaError error;
PortAudioStream *stream;
int recDeviceNum;
int playDeviceNum;
int inputChannels;
int outputChannels;
int num_devices;
int device;
int opt;
int opts=-1, optm=0;
float optv=-2, opto=-2, opti=-2, opth=-2, optb=-2;
printf("px_test: a program to demonstrate the capabilities of PortMixer\n");
printf("By Dominic Mazzoni\n");
printf("\n");
printf("Usage:\n");
printf(" -d [device number]\n");
printf(" -m [mixer number]\n");
printf(" -v [vol] (Master volume)\n");
printf(" -o [vol] (PCM output volume)\n");
printf(" -i [vol] (Input volume)\n");
printf(" -s [source number] (Input source)\n");
printf(" -h [vol] (Playthrough)\n");
printf(" -b [bal] (Balance: -1.0....1.0)\n");
printf("\n");
printf("All volumes are between 0.0 and 1.0.\n");
printf("\n");
error = Pa_Initialize();
if (error != 0) {
printf("PortAudio error: %s\n", Pa_GetErrorText(error));
return -1;
}
num_devices = Pa_CountDevices();
device = Pa_GetDefaultInputDeviceID();
recDeviceNum = paNoDevice;
playDeviceNum = paNoDevice;
inputChannels = 0;
outputChannels = 0;
while(-1 != (opt=getopt(argc, argv, "d:m:v:o:i:s:h:b:"))) {
switch(opt) {
case 'd':
device = atoi(optarg);
printf("Set device to %d\n", device);
break;
case 'm':
optm = atoi(optarg);
printf("Set mixer number to %d\n", optm);
break;
case 'v':
optv = getvolarg(optarg); break;
case 'o':
opto = getvolarg(optarg); break;
case 'i':
opti = getvolarg(optarg); break;
case 'h':
opth = getvolarg(optarg); break;
case 'b':
optb = atof(optarg); break;
case 's':
opts = atoi(optarg); break;
}
}
printf("Devices:\n");
for(i=0; i<num_devices; i++) {
const PaDeviceInfo* deviceInfo = Pa_GetDeviceInfo(i);
if (i==device) {
printf("* ");
if (deviceInfo->maxInputChannels > 0) {
recDeviceNum = device;
inputChannels = deviceInfo->maxInputChannels;
}
if (deviceInfo->maxOutputChannels > 0) {
playDeviceNum = device;
outputChannels = deviceInfo->maxOutputChannels;
}
}
else
printf(" ");
printf("Device %d: %s in=%d out=%d",
i, deviceInfo->name,
deviceInfo->maxInputChannels, deviceInfo->maxOutputChannels);
if (i == Pa_GetDefaultInputDeviceID())
printf(" (default input)");
if (i == Pa_GetDefaultOutputDeviceID())
printf(" (default output)");
printf("\n");
}
printf("\n");
error = Pa_OpenStream(&stream, recDeviceNum, inputChannels, paFloat32, NULL,
playDeviceNum, outputChannels, paFloat32, NULL,
44101, 512, 1, paClipOff | paDitherOff,
DummyCallbackFunc, NULL);
if (error) {
printf("PortAudio error %d: %s\n", error,
Pa_GetErrorText(error));
return -1;
}
num_mixers = Px_GetNumMixers(stream);
printf("Number of mixers for device %d: %d\n", device, num_mixers);
for(i=0; i<num_mixers; i++) {
PxMixer *mixer;
int num;
int j;
printf("Mixer %d: %s\n", i, Px_GetMixerName(stream, i));
mixer = Px_OpenMixer(stream, i);
if (!mixer) {
printf(" Could not open mixer!\n");
continue;
}
if (i == optm) {
if (optv!=-2) {
Px_SetMasterVolume(mixer, optv);
printf(" Set master volume\n");
}
if (opto!=-2) {
Px_SetPCMOutputVolume(mixer, opto);
printf(" Set output volume\n");
}
if (opti!=-2) {
Px_SetInputVolume(mixer, opti);
printf(" Set input volume\n");
}
if (opth!=-2) {
Px_SetPlaythrough(mixer, opth);
printf(" Set playthrough volume\n");
}
if (opts!=-2) {
Px_SetCurrentInputSource(mixer, opts);
printf(" Set input source\n");
}
if (optb!=-2) {
Px_SetOutputBalance(mixer, optb);
printf(" Set balance\n");
}
}
printf(" Master volume: %.2f\n", Px_GetMasterVolume(mixer));
printf(" PCM output volume: %.2f\n", Px_GetPCMOutputVolume(mixer));
num = Px_GetNumOutputVolumes(mixer);
printf(" Num outputs: %d\n", num);
for(j=0; j<num; j++) {
printf(" Output %d (%s): %.2f\n",
j,
Px_GetOutputVolumeName(mixer, j),
Px_GetOutputVolume(mixer, j));
}
num = Px_GetNumInputSources(mixer);
printf(" Num input sources: %d\n", num);
for(j=0; j<num; j++) {
printf(" Input %d (%s) %s\n",
j,
Px_GetInputSourceName(mixer, j),
(Px_GetCurrentInputSource(mixer)==j?
"SELECTED": ""));
}
printf(" Input volume: %.2f\n", Px_GetInputVolume(mixer));
printf(" Playthrough:");
if (Px_SupportsPlaythrough(mixer))
printf(" %.2f\n", Px_GetPlaythrough(mixer));
else
printf(" not supported.\n");
printf(" Output balance:");
if (Px_SupportsOutputBalance(mixer))
printf(" %.2f\n", Px_GetOutputBalance(mixer));
else
printf(" not supported.\n");
Px_CloseMixer(mixer);
}
Pa_CloseStream(stream);
Pa_Terminate();
return 0;
}
