Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 246 insertions, 0 deletions

diff --git a/src/VBox/Devices/Audio/VBoxMMNotificationClient.cpp b/src/VBox/Devices/Audio/VBoxMMNotificationClient.cpp
new file mode 100644
index 00000000..92ae2119
--- /dev/null
+++ b/src/VBox/Devices/Audio/VBoxMMNotificationClient.cpp
@@ -0,0 +1,246 @@
+/* $Id: VBoxMMNotificationClient.cpp $ */
+/** @file
+ * VBoxMMNotificationClient.cpp - Implementation of the IMMNotificationClient interface
+ *                                to detect audio endpoint changes.
+ */
+
+/*
+ * Copyright (C) 2017-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+#include "VBoxMMNotificationClient.h"
+
+#include <iprt/win/windows.h>
+
+#pragma warning(push)
+#pragma warning(disable: 4201)
+#include <mmdeviceapi.h>
+#include <endpointvolume.h>
+#pragma warning(pop)
+
+#ifdef LOG_GROUP
+# undef LOG_GROUP
+#endif
+#define LOG_GROUP LOG_GROUP_DRV_HOST_AUDIO
+#include <VBox/log.h>
+
+VBoxMMNotificationClient::VBoxMMNotificationClient(void)
+    : m_fRegisteredClient(false)
+    , m_cRef(1)
+{
+}
+
+VBoxMMNotificationClient::~VBoxMMNotificationClient(void)
+{
+}
+
+/**
+ * Uninitializes the mulitmedia notification client implementation.
+ */
+void VBoxMMNotificationClient::Dispose(void)
+{
+    DetachFromEndpoint();
+
+    if (m_fRegisteredClient)
+    {
+        m_pEnum->UnregisterEndpointNotificationCallback(this);
+
+        m_fRegisteredClient = false;
+    }
+}
+
+/**
+ * Initializes the mulitmedia notification client implementation.
+ *
+ * @return  HRESULT
+ */
+HRESULT VBoxMMNotificationClient::Initialize(void)
+{
+    HRESULT hr = CoCreateInstance(__uuidof(MMDeviceEnumerator), 0, CLSCTX_ALL, __uuidof(IMMDeviceEnumerator),
+                                  (void **)&m_pEnum);
+    if (SUCCEEDED(hr))
+    {
+        hr = m_pEnum->RegisterEndpointNotificationCallback(this);
+        if (SUCCEEDED(hr))
+        {
+            m_fRegisteredClient = true;
+
+            hr = AttachToDefaultEndpoint();
+        }
+    }
+
+    LogFunc(("Returning %Rhrc\n",  hr));
+    return hr;
+}
+
+/**
+ * Registration callback implementation for storing our (required) contexts.
+ *
+ * @return  IPRT status code.
+ * @param   pDrvIns             Driver instance to register the notification client to.
+ * @param   pfnCallback         Audio callback to call by the notification client in case of new events.
+ */
+int VBoxMMNotificationClient::RegisterCallback(PPDMDRVINS pDrvIns, PFNPDMHOSTAUDIOCALLBACK pfnCallback)
+{
+    this->m_pDrvIns     = pDrvIns;
+    this->m_pfnCallback = pfnCallback;
+
+    return VINF_SUCCESS;
+}
+
+/**
+ * Unregistration callback implementation for cleaning up our mess when we're done handling
+ * with notifications.
+ */
+void VBoxMMNotificationClient::UnregisterCallback(void)
+{
+    this->m_pDrvIns     = NULL;
+    this->m_pfnCallback = NULL;
+}
+
+/**
+ * Stub being called when attaching to the default audio endpoint.
+ * Does nothing at the moment.
+ */
+HRESULT VBoxMMNotificationClient::AttachToDefaultEndpoint(void)
+{
+    return S_OK;
+}
+
+/**
+ * Stub being called when detaching from the default audio endpoint.
+ * Does nothing at the moment.
+ */
+void VBoxMMNotificationClient::DetachFromEndpoint(void)
+{
+
+}
+
+/**
+ * Handler implementation which is called when an audio device state
+ * has been changed.
+ *
+ * @return  HRESULT
+ * @param   pwstrDeviceId       Device ID the state is announced for.
+ * @param   dwNewState          New state the device is now in.
+ */
+STDMETHODIMP VBoxMMNotificationClient::OnDeviceStateChanged(LPCWSTR pwstrDeviceId, DWORD dwNewState)
+{
+    char *pszState = "unknown";
+
+    switch (dwNewState)
+    {
+        case DEVICE_STATE_ACTIVE:
+            pszState = "active";
+            break;
+        case DEVICE_STATE_DISABLED:
+            pszState = "disabled";
+            break;
+        case DEVICE_STATE_NOTPRESENT:
+            pszState = "not present";
+            break;
+        case DEVICE_STATE_UNPLUGGED:
+            pszState = "unplugged";
+            break;
+        default:
+            break;
+    }
+
+    LogRel2(("Audio: Device '%ls' has changed state to '%s'\n", pwstrDeviceId, pszState));
+
+#ifdef VBOX_WITH_AUDIO_CALLBACKS
+    AssertPtr(this->m_pDrvIns);
+    AssertPtr(this->m_pfnCallback);
+
+    if (this->m_pfnCallback)
+        /* Ignore rc */ this->m_pfnCallback(this->m_pDrvIns, PDMAUDIOBACKENDCBTYPE_DEVICES_CHANGED, NULL, 0);
+#endif
+
+    return S_OK;
+}
+
+/**
+ * Handler implementation which is called when a new audio device has been added.
+ *
+ * @return  HRESULT
+ * @param   pwstrDeviceId       Device ID which has been added.
+ */
+STDMETHODIMP VBoxMMNotificationClient::OnDeviceAdded(LPCWSTR pwstrDeviceId)
+{
+    RT_NOREF(pwstrDeviceId);
+    LogFunc(("%ls\n", pwstrDeviceId));
+    return S_OK;
+}
+
+/**
+ * Handler implementation which is called when an audio device has been removed.
+ *
+ * @return  HRESULT
+ * @param   pwstrDeviceId       Device ID which has been removed.
+ */
+STDMETHODIMP VBoxMMNotificationClient::OnDeviceRemoved(LPCWSTR pwstrDeviceId)
+{
+    RT_NOREF(pwstrDeviceId);
+    LogFunc(("%ls\n", pwstrDeviceId));
+    return S_OK;
+}
+
+/**
+ * Handler implementation which is called when the device audio device has been
+ * changed.
+ *
+ * @return  HRESULT
+ * @param   eFlow                     Flow direction of the new default device.
+ * @param   eRole                     Role of the new default device.
+ * @param   pwstrDefaultDeviceId      ID of the new default device.
+ */
+STDMETHODIMP VBoxMMNotificationClient::OnDefaultDeviceChanged(EDataFlow eFlow, ERole eRole, LPCWSTR pwstrDefaultDeviceId)
+{
+    RT_NOREF(eFlow, eRole, pwstrDefaultDeviceId);
+
+    if (eFlow == eRender)
+    {
+
+    }
+
+    return S_OK;
+}
+
+STDMETHODIMP VBoxMMNotificationClient::QueryInterface(REFIID interfaceID, void **ppvInterface)
+{
+    const IID IID_IMMNotificationClient = __uuidof(IMMNotificationClient);
+
+    if (   IsEqualIID(interfaceID, IID_IUnknown)
+        || IsEqualIID(interfaceID, IID_IMMNotificationClient))
+    {
+        *ppvInterface = static_cast<IMMNotificationClient*>(this);
+        AddRef();
+        return S_OK;
+    }
+
+    *ppvInterface = NULL;
+    return E_NOINTERFACE;
+}
+
+STDMETHODIMP_(ULONG) VBoxMMNotificationClient::AddRef(void)
+{
+    return InterlockedIncrement(&m_cRef);
+}
+
+STDMETHODIMP_(ULONG) VBoxMMNotificationClient::Release(void)
+{
+    long lRef = InterlockedDecrement(&m_cRef);
+    if (lRef == 0)
+        delete this;
+
+    return lRef;
+}
+