Merge pull request #7524 from jherico/oculus_audio

Allow display plugins to expose a preferred audio device

interface/src/scripting/HMDScriptingInterface.cpp

@@ -97,3 +97,11 @@ bool HMDScriptingInterface::isMounted() const{
     auto displayPlugin = qApp->getActiveDisplayPlugin();
     return (displayPlugin->isHmd() && displayPlugin->isDisplayVisible());
 }
+
+QString HMDScriptingInterface::preferredAudioInput() const {
+    return qApp->getActiveDisplayPlugin()->getPreferredAudioInDevice();
+}
+
+QString HMDScriptingInterface::preferredAudioOutput() const {
+    return qApp->getActiveDisplayPlugin()->getPreferredAudioOutDevice();
+}

interface/src/scripting/HMDScriptingInterface.h

@@ -34,6 +34,8 @@ public:
 
     Q_INVOKABLE glm::vec2 sphericalToOverlay(const glm::vec2 & sphericalPos) const;
     Q_INVOKABLE glm::vec2 overlayToSpherical(const glm::vec2 & overlayPos) const;
+    Q_INVOKABLE QString preferredAudioInput() const;
+    Q_INVOKABLE QString preferredAudioOutput() const;
 
 public:
     HMDScriptingInterface();

libraries/audio-client/src/AudioClient.cpp

@@ -175,6 +175,50 @@ int numDestinationSamplesRequired(const QAudioFormat& sourceFormat, const QAudio
     return (numSourceSamples * ratio) + 0.5f;
 }
 
+#ifdef Q_OS_WIN
+QString friendlyNameForAudioDevice(IMMDevice* pEndpoint) {
+    QString deviceName;
+    IPropertyStore* pPropertyStore;
+    pEndpoint->OpenPropertyStore(STGM_READ, &pPropertyStore);
+    pEndpoint->Release();
+    pEndpoint = NULL;
+    PROPVARIANT pv;
+    PropVariantInit(&pv);
+    HRESULT hr = pPropertyStore->GetValue(PKEY_Device_FriendlyName, &pv);
+    pPropertyStore->Release();
+    pPropertyStore = NULL;
+    deviceName = QString::fromWCharArray((wchar_t*)pv.pwszVal);
+    if (!IsWindows8OrGreater()) {
+        // Windows 7 provides only the 31 first characters of the device name.
+        const DWORD QT_WIN7_MAX_AUDIO_DEVICENAME_LEN = 31;
+        deviceName = deviceName.left(QT_WIN7_MAX_AUDIO_DEVICENAME_LEN);
+    }
+    PropVariantClear(&pv);
+    return deviceName;
+}
+
+QString AudioClient::friendlyNameForAudioDevice(wchar_t* guid) {
+    QString deviceName;
+    HRESULT hr = S_OK;
+    CoInitialize(NULL);
+    IMMDeviceEnumerator* pMMDeviceEnumerator = NULL;
+    CoCreateInstance(__uuidof(MMDeviceEnumerator), NULL, CLSCTX_ALL, __uuidof(IMMDeviceEnumerator), (void**)&pMMDeviceEnumerator);
+    IMMDevice* pEndpoint;
+    hr = pMMDeviceEnumerator->GetDevice(guid, &pEndpoint);
+    if (hr == E_NOTFOUND) {
+        printf("Audio Error: device not found\n");
+        deviceName = QString("NONE");
+    } else {
+        deviceName = ::friendlyNameForAudioDevice(pEndpoint);
+    }
+    pMMDeviceEnumerator->Release();
+    pMMDeviceEnumerator = NULL;
+    CoUninitialize();
+    return deviceName;
+}
+
+#endif
+
 QAudioDeviceInfo defaultAudioDeviceForMode(QAudio::Mode mode) {
 #ifdef __APPLE__
     if (QAudioDeviceInfo::availableDevices(mode).size() > 1) {
@@ -248,23 +292,7 @@ QAudioDeviceInfo defaultAudioDeviceForMode(QAudio::Mode mode) {
             printf("Audio Error: device not found\n");
             deviceName = QString("NONE");
         } else {
-            IPropertyStore* pPropertyStore;
-            pEndpoint->OpenPropertyStore(STGM_READ, &pPropertyStore);
-            pEndpoint->Release();
-            pEndpoint = NULL;
-            PROPVARIANT pv;
-            PropVariantInit(&pv);
-            hr = pPropertyStore->GetValue(PKEY_Device_FriendlyName, &pv);
-            pPropertyStore->Release();
-            pPropertyStore = NULL;
-            deviceName = QString::fromWCharArray((wchar_t*)pv.pwszVal);
-            if (!IsWindows8OrGreater()) {
-                // Windows 7 provides only the 31 first characters of the device name.
-                const DWORD QT_WIN7_MAX_AUDIO_DEVICENAME_LEN = 31;
-                deviceName = deviceName.left(QT_WIN7_MAX_AUDIO_DEVICENAME_LEN);
-            }
-            qCDebug(audioclient) << (mode == QAudio::AudioOutput ? "output" : "input") << " device:" << deviceName;
-            PropVariantClear(&pv);
+            deviceName = friendlyNameForAudioDevice(pEndpoint);
         }
         pMMDeviceEnumerator->Release();
         pMMDeviceEnumerator = NULL;

libraries/audio-client/src/AudioClient.h

@@ -16,6 +16,7 @@
 #include <memory>
 #include <vector>
 
+#include <QtCore/qsystemdetection.h>
 #include <QtCore/QByteArray>
 #include <QtCore/QElapsedTimer>
 #include <QtCore/QObject>
@@ -126,6 +127,10 @@ public:
 
     static const float CALLBACK_ACCELERATOR_RATIO;
 
+#ifdef Q_OS_WIN
+    static QString friendlyNameForAudioDevice(wchar_t* guid);
+#endif
+
 public slots:
     void start();
     void stop();

libraries/plugins/src/plugins/DisplayPlugin.h

@@ -74,6 +74,9 @@ public:
     /// whether the HMD is being worn
     virtual bool isDisplayVisible() const { return false; }
 
+    virtual QString getPreferredAudioInDevice() const { return QString(); }
+    virtual QString getPreferredAudioOutDevice() const { return QString(); }
+
     // Rendering support
 
     /**

plugins/oculus/CMakeLists.txt

@@ -12,8 +12,8 @@ if (WIN32)
     add_definitions(-DGLEW_STATIC)
 
     set(TARGET_NAME oculus)
-    setup_hifi_plugin()
-    link_hifi_libraries(shared gl gpu controllers ui plugins display-plugins input-plugins)
+    setup_hifi_plugin(Multimedia)
+    link_hifi_libraries(shared gl gpu controllers ui plugins display-plugins input-plugins audio-client networking)
     
     include_hifi_library_headers(octree)
     
@@ -21,5 +21,6 @@ if (WIN32)
     find_package(LibOVR REQUIRED)
     target_include_directories(${TARGET_NAME} PRIVATE ${LIBOVR_INCLUDE_DIRS})
     target_link_libraries(${TARGET_NAME} ${LIBOVR_LIBRARIES})
+    target_link_libraries(${TARGET_NAME} Winmm.lib)
 
 endif()

plugins/oculus/src/OculusBaseDisplayPlugin.h

@@ -21,6 +21,7 @@ public:
     // Stereo specific methods
     virtual void resetSensors() override final;
     virtual void beginFrameRender(uint32_t frameIndex) override;
+    float getTargetFrameRate() override { return _hmdDesc.DisplayRefreshRate; }
     
 
 protected:

plugins/oculus/src/OculusDisplayPlugin.cpp

@@ -6,7 +6,14 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 #include "OculusDisplayPlugin.h"
+
+// Odd ordering of header is required to avoid 'macro redinition warnings'
+#include <AudioClient.h>
+
+#include <OVR_CAPI_Audio.h>
+
 #include <shared/NsightHelpers.h>
+
 #include "OculusHelpers.h"
 
 const QString OculusDisplayPlugin::NAME("Oculus Rift");
@@ -86,3 +93,26 @@ void OculusDisplayPlugin::hmdPresent() {
         }
     }
 }
+
+bool OculusDisplayPlugin::isHmdMounted() const {
+    ovrSessionStatus status;
+    return (OVR_SUCCESS(ovr_GetSessionStatus(_session, &status)) && 
+        (ovrFalse != status.HmdMounted));
+}
+
+QString OculusDisplayPlugin::getPreferredAudioInDevice() const { 
+    WCHAR buffer[OVR_AUDIO_MAX_DEVICE_STR_SIZE];
+    if (!OVR_SUCCESS(ovr_GetAudioDeviceInGuidStr(buffer))) {
+        return QString();
+    }
+    return AudioClient::friendlyNameForAudioDevice(buffer);
+}
+
+QString OculusDisplayPlugin::getPreferredAudioOutDevice() const { 
+    WCHAR buffer[OVR_AUDIO_MAX_DEVICE_STR_SIZE];
+    if (!OVR_SUCCESS(ovr_GetAudioDeviceOutGuidStr(buffer))) {
+        return QString();
+    }
+    return AudioClient::friendlyNameForAudioDevice(buffer);
+}
+

plugins/oculus/src/OculusDisplayPlugin.h

@@ -12,20 +12,18 @@
 struct SwapFramebufferWrapper;
 using SwapFboPtr = QSharedPointer<SwapFramebufferWrapper>;
 
-const float TARGET_RATE_Oculus = 75.0f;
-
 class OculusDisplayPlugin : public OculusBaseDisplayPlugin {
     using Parent = OculusBaseDisplayPlugin;
 public:
     const QString& getName() const override { return NAME; }
 
-    float getTargetFrameRate() override { return TARGET_RATE_Oculus; }
+    QString getPreferredAudioInDevice() const override;
+    QString getPreferredAudioOutDevice() const override;
 
 protected:
     bool internalActivate() override;
     void hmdPresent() override;
-    // FIXME update with Oculus API call once it's available in the SDK
-    bool isHmdMounted() const override { return true; }
+    bool isHmdMounted() const override;
     void customizeContext() override;
     void uncustomizeContext() override;
     void cycleDebugOutput() override;