I'm testing the sound recording on Mac, by using the following code
OSStatus error;
AudioDeviceID deviceID = 0;
AudioObjectPropertyAddress propertyAddress;
UInt32 propertySize;
propertyAddress.mSelector = kAudioHardwarePropertyDefaultInputDevice;
propertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
propertyAddress.mElement = 0;
propertySize = sizeof(AudioDeviceID);
error = AudioHardwareServiceGetPropertyData(kAudioObjectSystemObject,
&propertyAddress,
0,
NULL,
&propertySize,
&deviceID);
if(error)
return error;
propertyAddress.mSelector = kAudioDevicePropertyNominalSampleRate;
propertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
propertyAddress.mElement = 0;
propertySize = sizeof(Float64);
error = AudioHardwareServiceGetPropertyData(deviceID,
&propertyAddress,
0,
NULL,
&propertySize,
outSampleRate);
But Xcode gave me that the AudioHardwareService*** are deprecated from OS X 10.11.
I checked the Apple's API guide, but I can't find any replacement for these APIs.
I know it works, but all these warnings are so annoying.
What should I do?
In your case, simply substituting AudioObjectGetPropertyData for AudioHardwareServiceGetPropertyData should suffice; see TN2223.
Related
In OS X, how can I tell if the camera or microphone is in use by another application or process? The following doesn't seem to work unless the other application has locked the device.
NSArray *devices = [AVCaptureDevice devices];
for (AVCaptureDevice *device in devices) {
NSLog(#"In use by other application %hhd", [device isInUseByAnotherApplication]);
}
You can use CoreAudio to check if microphone is in use or not.
AudioObjectPropertyAddress propertyAddress = {
kAudioHardwarePropertyDevices,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
UInt32 dataSize = 0;
OSStatus status = AudioObjectGetPropertyDataSize(kAudioObjectSystemObject, &propertyAddress, 0, NULL, &dataSize);
if(kAudioHardwareNoError != status) {
fprintf(stderr, "AudioObjectGetPropertyDataSize (kAudioHardwarePropertyDevices) failed: %i\n", status);
//return NULL;
return;
}
UInt32 deviceCount = (UInt32)(dataSize / sizeof(AudioDeviceID));
AudioDeviceID *audioDevices = (AudioDeviceID*)(malloc(dataSize));
if(NULL == audioDevices) {
fputs("Unable to allocate memory", stderr);
return;
}
status = AudioObjectGetPropertyData(kAudioObjectSystemObject, &propertyAddress, 0, NULL, &dataSize, audioDevices);
if(kAudioHardwareNoError != status) {
fprintf(stderr, "AudioObjectGetPropertyData (kAudioHardwarePropertyDevices) failed: %i\n", status);
free(audioDevices), audioDevices = NULL;
return ;
}
CFMutableArrayRef inputDeviceArray = CFArrayCreateMutable(kCFAllocatorDefault, deviceCount, &kCFTypeArrayCallBacks);
if(NULL == inputDeviceArray) {
fputs("CFArrayCreateMutable failed", stderr);
free(audioDevices), audioDevices = NULL;
return ;
}`
Now Iterate through all the devices and fetch property data kAudioDevicePropertyDeviceIsRunningSomewhere
CFBooleanRef deviceIsRunning = NULL;
dataSize = sizeof(deviceIsRunning);
propertyAddress.mSelector = kAudioDevicePropertyDeviceIsRunningSomewhere;
status = AudioObjectGetPropertyData(audioDevices[i], &propertyAddress, 0, NULL, &dataSize, &deviceIsRunning);
Check deviceIsRunning variable.
I don't have idea about video device. But i will update my answer if i find some solution.
Hope this help.
I'm working on go module that detects camera/microphone state (using cgo) and here is my Objective-C implementations:
IsCameraOn(): https://github.com/antonfisher/go-media-devices-state/blob/main/pkg/camera/camera_darwin.mm
IsMicrophoneOn(): https://github.com/antonfisher/go-media-devices-state/blob/main/pkg/microphone/microphone_darwin.mm
Thanks #Rohan for the accepted answer!
Background of the issue:
I get AudioDeviceID for default input mic this way:
OSStatus error = noErr;
AudioObjectPropertyAddress propertyAddress = {};
UInt32 propertySize;
/* get default device ID */
AudioDeviceID deviceID = 0;
propertyAddress.mSelector = kAudioHardwarePropertyDevices;
propertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
propertyAddress.mElement = kAudioObjectPropertyElementMaster;
propertySize = sizeof(AudioDeviceID);
error = AudioHardwareServiceGetPropertyData(kAudioObjectSystemObject,
&propertyAddress, 0,
NULL, &propertySize, &deviceID);
if(!error)
... // we get some AudioDeviceID, let it be ID_1
And get AudioDeviceID for UID is:
CFStringRef micUID = ... //my UID for the mic
CFStringRef *inDeviceUID = &micUID;
AudioObjectPropertyAddress proprtyAddress = {};
proprtyAddress.mSelector = kAudioHardwarePropertyDeviceForUID;
proprtyAddress.mScope = kAudioObjectPropertyScopeGlobal;
proprtyAddress.mElement = kAudioObjectPropertyElementMaster;
AudioValueTranslation translation = {};
translation.mInputData = inDeviceUID;
translation.mInputDataSize = sizeof(CFStringRef);
translation.mOutputData = outDeviceID;
translation.mOutputDataSize = sizeof(AudioDeviceID);
UInt32 inSize = sizeof(translation);
OSStatus result = AudioObjectGetPropertyData(kAudioObjectSystemObject,
&proprtyAddress,
0,
nullptr,
&inSize,
&translation);
// if no error - we have another AudioDeviceID, let it be ID_2
The question is:
Why is ID_1 != ID_2?
It happens only when I connect two identical web-cameras to Mac. What's weird about it is that these mics have different UID.
And when I try to change some parameters, sampleRate for example, it doesn't work (I get kAudioHardwareUnknownPropertyError error).
For Built-in line input it work ok.
i have faced, witch simple quoestion, i didin't find in google, or in any forum. How to turn application audio/sound off? like mute? i wan't to make checkbox witch controlls sound of application.
I would be grateful for detailed definition
Try this from the source code:
- (void)setDefaultAudioDevice
{
UInt32 propertySize = 0;
OSStatus status = noErr;
AudioObjectPropertyAddress propertyAOPA;
propertyAOPA.mElement = kAudioObjectPropertyElementMaster;
propertyAOPA.mScope = kAudioObjectPropertyScopeGlobal;
propertyAOPA.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
propertySize = sizeof(AudioDeviceID);
status = AudioHardwareServiceGetPropertyData(kAudioObjectSystemObject, &propertyAOPA, 0, NULL, &propertySize, &outputDeviceID);
if(status)
{
// Error
return;
}
}
- (void)muteHardwareVolume
{
UInt32 propertySize = 0;
OSStatus status = noErr;
AudioObjectPropertyAddress propertyAOPA;
[self setDefaultAudioDevice];
propertyAOPA.mElement = kAudioObjectPropertyElementMaster;
propertyAOPA.mScope = kAudioDevicePropertyScopeOutput;
propertyAOPA.mSelector = kAudioDevicePropertyMute;
propertySize = sizeof(UInt32);
UInt32 mute = 1;
status = AudioHardwareServiceSetPropertyData(outputDeviceID, &propertyAOPA, 0, NULL, propertySize, &mute);
if(status)
{
// Error
return;
}
}
I am trying to program a Direct2D desktop app based on a Windows tutorial, but am having problems creating a SwapChain1. In the code below everything gets initialized until the CreateSwapChainForHwnd. The pointer m_pDXGISwapChain1 stays NULL. All the pointers except pOutput are ComPtrs.
D2D1_FACTORY_OPTIONS options;
ZeroMemory(&options, sizeof(D2D1_FACTORY_OPTIONS));
HRESULT hr = D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED,
__uuidof(ID2D1Factory1), &options, &m_pD2DFactory1);
if(SUCCEEDED(hr))
{
UINT creationFlags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;
D3D_FEATURE_LEVEL featureLevels[] = { D3D_FEATURE_LEVEL_11_1, D3D_FEATURE_LEVEL_11_0 };
hr = D3D11CreateDevice(nullptr, D3D_DRIVER_TYPE_HARDWARE, 0, creationFlags,
featureLevels, ARRAYSIZE(featureLevels), D3D11_SDK_VERSION, &m_pD3DDevice,
&m_featureLevel, &m_pD3DDeviceContext);
}
if(SUCCEEDED(hr))
hr = m_pD3DDevice.As(&m_pDXGIDevice1);
if(SUCCEEDED(hr))
hr = m_pD2DFactory1->CreateDevice(m_pDXGIDevice1.Get(), &m_pD2DDevice);
if(SUCCEEDED(hr))
hr = m_pD2DDevice->CreateDeviceContext(D2D1_DEVICE_CONTEXT_OPTIONS_NONE, &m_pD2DDeviceContext);
if(SUCCEEDED(hr))
hr = m_pDXGIDevice1->GetAdapter(&m_pDXGIAdapter);
if(SUCCEEDED(hr))
hr = m_pDXGIAdapter->GetParent(IID_PPV_ARGS(&m_pDXGIFactory2));
DXGI_SWAP_CHAIN_DESC1 swapChainDesc1 = {0};
swapChainDesc1.Width = 0;
swapChainDesc1.Height = 0;
swapChainDesc1.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
swapChainDesc1.Stereo = false;
swapChainDesc1.SampleDesc.Count = 1;
swapChainDesc1.SampleDesc.Quality = 0;
swapChainDesc1.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
swapChainDesc1.BufferCount = 2;
swapChainDesc1.Scaling = DXGI_SCALING_NONE;
swapChainDesc1.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL;
swapChainDesc1.AlphaMode = DXGI_ALPHA_MODE_IGNORE;
swapChainDesc1.Flags = 0;
IDXGIOutput *pOutput;
m_pDXGIAdapter->EnumOutputs(0, &pOutput);
if(SUCCEEDED(hr))
hr = m_pDXGIFactory2->CreateSwapChainForHwnd(
static_cast<IUnknown*>(m_pD3DDevice.Get()), m_hwnd, &swapChainDesc1,
NULL, pOutput, &m_pDXGISwapChain1);
if(SUCCEEDED(hr))
hr = m_pDXGIDevice1->SetMaximumFrameLatency(1);
if(SUCCEEDED(hr))
hr = m_pDXGISwapChain1->GetBuffer(0, IID_PPV_ARGS(&m_pDXGIBackBuffer));
If all your pointers are ComPtr, then the call should look like this:
ComPtr<ID3D11Device> d3dDevice;
ComPtr<IDXGIFactory2> dxgiFactory;
// assuming d3dDevice and dxgiFactory are initialized correctly:
ComPtr<IDXGISwapChain1> swapChain;
dxgiFactory->CreateSwapChainForHwnd(d3dDevice.Get(), hWnd, &swapChainDescription, nullptr, nullptr, swapChain.GetAddressOf())
As for your swap chain description, if you're making a non-Windows Store App, you should set
swapChainDescription.Scaling = DXGI_SCALING_STRETCH;
swapChainDescription.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
Both of those values are 0, so you can leave them out.
Here is the complete swap chain description that I use:
DXGI_SWAP_CHAIN_DESC1 swapChainDescription = {};
swapChainDescription.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
swapChainDescription.SampleDesc.Count = 1;
swapChainDescription.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
swapChainDescription.BufferCount = 2;
See this article for full a walkthrough of how to set up Direct2D 1.1 properly - including the CreateSwapChainForHwnd call: http://msdn.microsoft.com/en-us/magazine/dn198239.aspx
Direct2D don't have SwapChain at user level, SwapChain is for Direct3D, I see some DirectX 11 code in your post, do you really want Direct2D? or Direct3D?
How can i get audio device UID (USB speaker) to pass into NSSound's setPlaybackDeviceIdentifier: method
Thanks
To avoid the deprecated AudioHardwareGetProperty and AudioDeviceGetProperty calls replace them with something like this:
AudioObjectPropertyAddress propertyAddress;
AudioObjectID *deviceIDs;
UInt32 propertySize;
NSInteger numDevices;
propertyAddress.mSelector = kAudioHardwarePropertyDevices;
propertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
propertyAddress.mElement = kAudioObjectPropertyElementMaster;
if (AudioObjectGetPropertyDataSize(kAudioObjectSystemObject, &propertyAddress, 0, NULL, &propertySize) == noErr) {
numDevices = propertySize / sizeof(AudioDeviceID);
deviceIDs = (AudioDeviceID *)calloc(numDevices, sizeof(AudioDeviceID));
if (AudioObjectGetPropertyData(kAudioObjectSystemObject, &propertyAddress, 0, NULL, &propertySize, deviceIDs) == noErr) {
AudioObjectPropertyAddress deviceAddress;
char deviceName[64];
char manufacturerName[64];
for (NSInteger idx=0; idx<numDevices; idx++) {
propertySize = sizeof(deviceName);
deviceAddress.mSelector = kAudioDevicePropertyDeviceName;
deviceAddress.mScope = kAudioObjectPropertyScopeGlobal;
deviceAddress.mElement = kAudioObjectPropertyElementMaster;
if (AudioObjectGetPropertyData(deviceIDs[idx], &deviceAddress, 0, NULL, &propertySize, deviceName) == noErr) {
propertySize = sizeof(manufacturerName);
deviceAddress.mSelector = kAudioDevicePropertyDeviceManufacturer;
deviceAddress.mScope = kAudioObjectPropertyScopeGlobal;
deviceAddress.mElement = kAudioObjectPropertyElementMaster;
if (AudioObjectGetPropertyData(deviceIDs[idx], &deviceAddress, 0, NULL, &propertySize, manufacturerName) == noErr) {
CFStringRef uidString;
propertySize = sizeof(uidString);
deviceAddress.mSelector = kAudioDevicePropertyDeviceUID;
deviceAddress.mScope = kAudioObjectPropertyScopeGlobal;
deviceAddress.mElement = kAudioObjectPropertyElementMaster;
if (AudioObjectGetPropertyData(deviceIDs[idx], &deviceAddress, 0, NULL, &propertySize, &uidString) == noErr) {
NSLog(#"device %s by %s id %#", deviceName, manufacturerName, uidString);
CFRelease(uidString);
}
}
}
}
}
free(deviceIDs);
}
ok i got it myself...
the theCFString will contain the device UID
UInt32 theSize;
char theString[kMaxStringSize];
UInt32 theNumberDevices;
AudioDeviceID *theDeviceList = NULL;
UInt32 theDeviceIndex;
CFStringRef theCFString = NULL;
OSStatus theStatus = noErr;
// this is our driver
const char *nameString = "Burr-Brown Japan PCM2702";
const char *manufacturerString = "Burr-Brown Japan";
// device list size
theSize = 0;
theStatus = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &theSize, NULL);
theNumberDevices = theSize / sizeof(AudioDeviceID);
// allocate the device list
theDeviceList = (AudioDeviceID*)malloc(theNumberDevices * sizeof(AudioDeviceID));
// get the device list
theSize = theNumberDevices * sizeof(AudioDeviceID);
theStatus = AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &theSize, theDeviceList);
// iterate through the device list, find our device and return the UID
for(theDeviceIndex = 0; theDeviceIndex < theNumberDevices; ++theDeviceIndex)
{
// get name
theSize = kMaxStringSize;
theStatus = AudioDeviceGetProperty(theDeviceList[theDeviceIndex],
0, 0, kAudioDevicePropertyDeviceName, &theSize, theString);
NSLog(#"%s",theString);
// is it me?
if (strncmp(theString, nameString, strlen(nameString)) == 0) {
// get manufacturer
theSize = kMaxStringSize;
theStatus = AudioDeviceGetProperty(theDeviceList[theDeviceIndex], 0, 0,
kAudioDevicePropertyDeviceManufacturer, &theSize, theString);
NSLog(#"%s",theString);
// is it really me?
if (strncmp(theString, manufacturerString, strlen(manufacturerString)) == 0) {
// get device UID
theSize = sizeof(CFStringRef);
theStatus = AudioDeviceGetProperty(theDeviceList[theDeviceIndex],
0, 0, kAudioDevicePropertyDeviceUID, &theSize, &theCFString);
NSLog(#"%s",theCFString);
break;
}
}
}
AudioHardwareGetProperty is deprecated in snow leopard.