Added new flag JUCE_WASAPI_EXCLUSIVE that provides a new audio device type for opening WASAPI devices in exclusive mode.

modules/juce_audio_devices/audio_io/juce_AudioIODeviceType.cpp

@@ -50,7 +50,7 @@ AudioIODeviceType* AudioIODeviceType::createAudioIODeviceType_iOSAudio()
 #endif
 
 #if ! (JUCE_WINDOWS && JUCE_WASAPI)
-AudioIODeviceType* AudioIODeviceType::createAudioIODeviceType_WASAPI()          { return nullptr; }
+AudioIODeviceType* AudioIODeviceType::createAudioIODeviceType_WASAPI (bool)     { return nullptr; }
 #endif
 
 #if ! (JUCE_WINDOWS && JUCE_DIRECTSOUND)

modules/juce_audio_devices/audio_io/juce_AudioIODeviceType.h

@@ -151,7 +151,7 @@ public:
     /** Creates an iOS device type if it's available on this platform, or returns null. */
     static AudioIODeviceType* createAudioIODeviceType_iOSAudio();
     /** Creates a WASAPI device type if it's available on this platform, or returns null. */
-    static AudioIODeviceType* createAudioIODeviceType_WASAPI();
+    static AudioIODeviceType* createAudioIODeviceType_WASAPI (bool exclusiveMode);
     /** Creates a DirectSound device type if it's available on this platform, or returns null. */
     static AudioIODeviceType* createAudioIODeviceType_DirectSound();
     /** Creates an ASIO device type if it's available on this platform, or returns null. */

modules/juce_audio_devices/juce_audio_devices.h

@@ -43,12 +43,21 @@
 #endif
 
 /** Config: JUCE_WASAPI
-    Enables WASAPI audio devices (Windows Vista and above).
+    Enables WASAPI audio devices (Windows Vista and above). See also the
+    JUCE_WASAPI_EXCLUSIVE flag.
 */
 #ifndef JUCE_WASAPI
  #define JUCE_WASAPI 1
 #endif
 
+/** Config: JUCE_WASAPI_EXCLUSIVE
+    Enables WASAPI audio devices in exclusive mode (Windows Vista and above).
+*/
+#ifndef JUCE_WASAPI_EXCLUSIVE
+ #define JUCE_WASAPI_EXCLUSIVE 0
+#endif
+
+
 /** Config: JUCE_DIRECTSOUND
     Enables DirectSound audio (MS Windows only).
 */

modules/juce_audio_devices/native/juce_win32_ASIO.cpp

@@ -1409,6 +1409,7 @@ private:
         if      (currentASIODev[0] == this)  ASIOCallbackFunctions<0>::setCallbacks (callbacks);
         else if (currentASIODev[1] == this)  ASIOCallbackFunctions<1>::setCallbacks (callbacks);
         else if (currentASIODev[2] == this)  ASIOCallbackFunctions<2>::setCallbacks (callbacks);
+        else if (currentASIODev[3] == this)  ASIOCallbackFunctions<3>::setCallbacks (callbacks);
         else                                 jassertfalse;
     }
 

modules/juce_audio_devices/native/juce_win32_WASAPI.cpp

@@ -1208,9 +1208,10 @@ class WASAPIAudioIODeviceType  : public AudioIODeviceType,
                                  private DeviceChangeDetector
 {
 public:
-    WASAPIAudioIODeviceType()
-        : AudioIODeviceType ("Windows Audio"),
+    WASAPIAudioIODeviceType (bool exclusive)
+        : AudioIODeviceType (exclusive ? "Windows Audio (Exclusive Mode)" : "Windows Audio"),
           DeviceChangeDetector (L"Windows Audio"),
+          exclusiveMode (exclusive),
           hasScanned (false)
     {
     }
@@ -1267,7 +1268,6 @@ public:
     {
         jassert (hasScanned); // need to call scanForDevices() before doing this
 
-        const bool useExclusiveMode = false;
         ScopedPointer<WASAPIAudioIODevice> device;
 
         const int outputIndex = outputDeviceNames.indexOf (outputDeviceName);
@@ -1279,7 +1279,7 @@ public:
                                                                             : inputDeviceName,
                                               outputDeviceIds [outputIndex],
                                               inputDeviceIds [inputIndex],
-                                              useExclusiveMode);
+                                              exclusiveMode);
 
             if (! device->initialise())
                 device = nullptr;
@@ -1293,7 +1293,7 @@ public:
     StringArray inputDeviceNames, inputDeviceIds;
 
 private:
-    bool hasScanned;
+    bool exclusiveMode, hasScanned;
     ComSmartPtr<IMMDeviceEnumerator> enumerator;
 
     //==============================================================================
@@ -1493,12 +1493,16 @@ struct MMDeviceMasterVolume
 }
 
 //==============================================================================
-AudioIODeviceType* AudioIODeviceType::createAudioIODeviceType_WASAPI()
+AudioIODeviceType* AudioIODeviceType::createAudioIODeviceType_WASAPI (bool exclusiveMode)
 {
-    if (SystemStats::getOperatingSystemType() >= SystemStats::WinVista)
-        return new WasapiClasses::WASAPIAudioIODeviceType();
+   #if ! JUCE_WASAPI_EXCLUSIVE
+    if (exclusiveMode)
+        return nullptr;
+   #endif
 
-    return nullptr;
+    return SystemStats::getOperatingSystemType() >= SystemStats::WinVista
+                ? new WasapiClasses::WASAPIAudioIODeviceType (exclusiveMode)
+                : nullptr;
 }
 
 //==============================================================================