void AudioStream::ResetStreamIfNeeded()
{
cubeb_device * device;
// Only reset a device if a mic is active, and this is a low latency stream.
if (!mMicrophoneActive || mLatencyRequest != LowLatency) {
return;
}
if (cubeb_stream_get_current_device(mCubebStream.get(), &device) == CUBEB_OK) {
// This a microphone that goes through the headphone plug, reset the
// output to prevent echo building up.
if (strcmp(device->input_name, "emic") == 0) {
LOG(("Resetting audio output"));
Reset();
}
cubeb_stream_device_destroy(mCubebStream.get(), device);
}
}
// On certain MacBookPro, the microphone is located near the left speaker.
// We need to pan the sound output to the right speaker if we are using the mic
// and the built-in speaker, or we will have terrible echo.
void AudioStream::PanOutputIfNeeded(bool aMicrophoneActive)
{
#ifdef XP_MACOSX
cubeb_device* device;
int rv;
char name[128];
size_t length = sizeof(name);
bool panCenter = false;
rv = sysctlbyname("hw.model", name, &length, NULL, 0);
if (rv) {
return;
}
if (!strncmp(name, "MacBookPro", 10)) {
if (cubeb_stream_get_current_device(mCubebStream.get(), &device) == CUBEB_OK) {
// Check if we are currently outputing sound on external speakers.
if (!strcmp(device->output_name, "ispk")) {
// Pan everything to the right speaker.
if (aMicrophoneActive) {
LOG(("%p Panning audio output to the right.", this));
if (cubeb_stream_set_panning(mCubebStream.get(), 1.0) != CUBEB_OK) {
NS_WARNING("Could not pan audio output to the right.");
}
} else {
panCenter = true;
}
} else {
panCenter = true;
}
if (panCenter) {
LOG(("%p Panning audio output to the center.", this));
if (cubeb_stream_set_panning(mCubebStream.get(), 0.0) != CUBEB_OK) {
NS_WARNING("Could not pan audio output to the center.");
}
}
cubeb_stream_device_destroy(mCubebStream.get(), device);
}
}
#endif
}
void AudioCallbackDriver::PanOutputIfNeeded(bool aMicrophoneActive)
{
#ifdef XP_MACOSX
cubeb_device* out;
int rv;
char name[128];
size_t length = sizeof(name);
rv = sysctlbyname("hw.model", name, &length, NULL, 0);
if (rv) {
return;
}
if (!strncmp(name, "MacBookPro", 10)) {
if (cubeb_stream_get_current_device(mAudioStream, &out) == CUBEB_OK) {
// Check if we are currently outputing sound on external speakers.
if (!strcmp(out->output_name, "ispk")) {
// Pan everything to the right speaker.
if (aMicrophoneActive) {
if (cubeb_stream_set_panning(mAudioStream, 1.0) != CUBEB_OK) {
NS_WARNING("Could not pan audio output to the right.");
}
} else {
if (cubeb_stream_set_panning(mAudioStream, 0.0) != CUBEB_OK) {
NS_WARNING("Could not pan audio output to the center.");
}
}
} else {
if (cubeb_stream_set_panning(mAudioStream, 0.0) != CUBEB_OK) {
NS_WARNING("Could not pan audio output to the center.");
}
}
cubeb_stream_device_destroy(mAudioStream, out);
}
}
#endif
}