зеркало из https://github.com/mozilla/pjs.git
Bug 441197: Maintain an audio session in-process. r=jimm
This commit is contained in:
Kyle Huey
Родитель
2fc5075f47
Коммит
03285a7ed8
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@ -0,0 +1,347 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
|
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* the License. You may obtain a copy of the License at
|
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* http://www.mozilla.org/MPL/
|
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
|
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
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* for the specific language governing rights and limitations under the
|
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Kyle Huey <me@kylehuey.com>
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
|
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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||||
* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
|
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* use your version of this file under the terms of the MPL, indicate your
|
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* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
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* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
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#include <windows.h>
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#include <audiopolicy.h>
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#include <Mmdeviceapi.h>
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#include "nsIStringBundle.h"
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#include "nsIUUIDGenerator.h"
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#include "nsIXULAppInfo.h"
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//#include "AudioSession.h"
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#include "nsCOMPtr.h"
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#include "nsAutoPtr.h"
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#include "nsServiceManagerUtils.h"
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#include "nsString.h"
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#include <objbase.h>
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namespace mozilla {
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namespace widget {
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/*
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* To take advantage of what Vista+ have to offer with respect to audio,
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* we need to maintain an audio session. This class wraps IAudioSessionControl
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* and implements IAudioSessionEvents (for callbacks from Windows)
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*/
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class AudioSession: public IAudioSessionEvents {
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private:
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AudioSession();
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~AudioSession();
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public:
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static AudioSession* GetSingleton();
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// COM IUnknown
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STDMETHODIMP_(ULONG) AddRef();
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STDMETHODIMP QueryInterface(REFIID, void**);
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STDMETHODIMP_(ULONG) Release();
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// IAudioSessionEvents
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STDMETHODIMP OnChannelVolumeChanged(DWORD aChannelCount,
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float aChannelVolumeArray[],
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DWORD aChangedChannel,
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LPCGUID aContext);
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STDMETHODIMP OnDisplayNameChanged(LPCWSTR aDisplayName, LPCGUID aContext);
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STDMETHODIMP OnGroupingParamChanged(LPCGUID aGroupingParam, LPCGUID aContext);
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STDMETHODIMP OnIconPathChanged(LPCWSTR aIconPath, LPCGUID aContext);
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STDMETHODIMP OnSessionDisconnected(AudioSessionDisconnectReason aReason);
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STDMETHODIMP OnSimpleVolumeChanged(float aVolume,
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BOOL aMute,
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LPCGUID aContext);
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STDMETHODIMP OnStateChanged(AudioSessionState aState);
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nsresult Start();
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nsresult Stop();
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protected:
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nsRefPtr<IAudioSessionControl> mAudioSessionControl;
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nsString mDisplayName;
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nsString mIconPath;
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nsID mSessionGroupingParameter;
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nsAutoRefCnt mRefCnt;
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NS_DECL_OWNINGTHREAD
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static AudioSession* sService;
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};
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nsresult
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StartAudioSession()
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{
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return AudioSession::GetSingleton()->Start();
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}
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nsresult
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StopAudioSession()
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{
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return AudioSession::GetSingleton()->Stop();
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}
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AudioSession* AudioSession::sService = NULL;
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AudioSession::AudioSession()
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{
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}
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AudioSession::~AudioSession()
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{
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}
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AudioSession*
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AudioSession::GetSingleton()
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{
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if (!(AudioSession::sService)) {
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nsRefPtr<AudioSession> service = new AudioSession();
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service.forget(&AudioSession::sService);
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}
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// We don't refcount AudioSession on the Gecko side, we hold one single ref
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// as long as the appshell is running.
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return AudioSession::sService;
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}
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// It appears Windows will use us on a background thread ...
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NS_IMPL_THREADSAFE_ADDREF(AudioSession)
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NS_IMPL_THREADSAFE_RELEASE(AudioSession)
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STDMETHODIMP
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AudioSession::QueryInterface(REFIID iid, void **ppv)
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{
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const IID IID_IAudioSessionEvents = __uuidof(IAudioSessionEvents);
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if ((IID_IUnknown == iid) ||
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(IID_IAudioSessionEvents == iid)) {
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*ppv = static_cast<IAudioSessionEvents*>(this);
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AddRef();
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return S_OK;
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}
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return E_NOINTERFACE;
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}
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// Once we are started Windows will hold a reference to us through our
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// IAudioSessionEvents interface that will keep us alive until the appshell
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// calls Stop.
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nsresult
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AudioSession::Start()
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{
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const CLSID CLSID_MMDeviceEnumerator = __uuidof(MMDeviceEnumerator);
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const IID IID_IMMDeviceEnumerator = __uuidof(IMMDeviceEnumerator);
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const IID IID_IAudioSessionManager = __uuidof(IAudioSessionManager);
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HRESULT hr;
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if (FAILED(::CoInitialize(NULL)))
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return NS_ERROR_FAILURE;
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nsCOMPtr<nsIStringBundleService> bundleService =
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do_GetService(NS_STRINGBUNDLE_CONTRACTID);
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NS_ENSURE_TRUE(bundleService, NS_ERROR_FAILURE);
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nsCOMPtr<nsIStringBundle> bundle;
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bundleService->CreateBundle("chrome://branding/locale/brand.properties",
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getter_AddRefs(bundle));
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NS_ENSURE_TRUE(bundle, NS_ERROR_FAILURE);
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bundle->GetStringFromName(NS_LITERAL_STRING("brandFullName").get(),
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getter_Copies(mDisplayName));
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PRUnichar *buffer;
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mIconPath.GetMutableData(&buffer, MAX_PATH);
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// XXXkhuey we should provide a way for a xulrunner app to specify an icon
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// that's not in the product binary.
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::GetModuleFileNameW(NULL, buffer, MAX_PATH);
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nsCOMPtr<nsIUUIDGenerator> uuidgen =
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do_GetService("@mozilla.org/uuid-generator;1");
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NS_ASSERTION(uuidgen, "No UUID-Generator?!?");
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uuidgen->GenerateUUIDInPlace(&mSessionGroupingParameter);
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nsRefPtr<IMMDeviceEnumerator> enumerator;
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hr = ::CoCreateInstance(CLSID_MMDeviceEnumerator,
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NULL,
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CLSCTX_ALL,
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IID_IMMDeviceEnumerator,
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getter_AddRefs(enumerator));
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if (FAILED(hr))
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return NS_ERROR_NOT_AVAILABLE;
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nsRefPtr<IMMDevice> device;
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hr = enumerator->GetDefaultAudioEndpoint(EDataFlow::eRender,
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ERole::eMultimedia,
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getter_AddRefs(device));
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if (FAILED(hr)) {
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if (hr == E_NOTFOUND)
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return NS_ERROR_NOT_AVAILABLE;
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return NS_ERROR_FAILURE;
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}
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nsRefPtr<IAudioSessionManager> manager;
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hr = device->Activate(IID_IAudioSessionManager,
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CLSCTX_ALL,
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NULL,
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getter_AddRefs(manager));
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if (FAILED(hr))
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return NS_ERROR_FAILURE;
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hr = manager->GetAudioSessionControl(NULL,
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FALSE,
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getter_AddRefs(mAudioSessionControl));
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if (FAILED(hr))
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return NS_ERROR_FAILURE;
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hr = mAudioSessionControl->SetGroupingParam((LPCGUID)&mSessionGroupingParameter,
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NULL);
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if (FAILED(hr)) {
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StopInternal();
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return NS_ERROR_FAILURE;
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}
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hr = mAudioSessionControl->SetDisplayName(mDisplayName.get(), NULL);
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if (FAILED(hr)) {
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StopInternal();
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return NS_ERROR_FAILURE;
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}
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hr = mAudioSessionControl->SetIconPath(mIconPath.get(), NULL);
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if (FAILED(hr)) {
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StopInternal();
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return NS_ERROR_FAILURE;
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}
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hr = mAudioSessionControl->RegisterAudioSessionNotification(this);
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if (FAILED(hr)) {
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StopInternal();
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return NS_ERROR_FAILURE;
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}
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return NS_OK;
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}
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void
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AudioSession::StopInternal()
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{
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if (mAudioSessionControl) {
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mAudioSessionControl->SetGroupingParam((LPCGUID)&blankId, NULL);
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mAudioSessionControl->UnregisterAudioSessionNotification(this);
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mAudioSessionControl = nsnull;
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}
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}
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nsresult
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AudioSession::Stop()
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{
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const nsID blankId = {0, 0, 0, {0, 0, 0, 0, 0, 0, 0, 0} };
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nsRefPtr<AudioSession> kungFuDeathGrip;
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kungFuDeathGrip.swap(sService);
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StopInternal();
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// At this point kungFuDeathGrip should be the only reference to AudioSession
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::CoUninitialize();
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return NS_OK;
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}
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STDMETHODIMP
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AudioSession::OnChannelVolumeChanged(DWORD aChannelCount,
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float aChannelVolumeArray[],
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DWORD aChangedChannel,
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LPCGUID aContext)
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{
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return S_OK; // NOOP
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}
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STDMETHODIMP
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AudioSession::OnDisplayNameChanged(LPCWSTR aDisplayName,
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LPCGUID aContext)
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{
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return S_OK; // NOOP
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}
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STDMETHODIMP
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AudioSession::OnGroupingParamChanged(LPCGUID aGroupingParam,
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LPCGUID aContext)
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{
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return S_OK; // NOOP
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}
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STDMETHODIMP
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AudioSession::OnIconPathChanged(LPCWSTR aIconPath,
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LPCGUID aContext)
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{
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return S_OK; // NOOP
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}
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STDMETHODIMP
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AudioSession::OnSessionDisconnected(AudioSessionDisconnectReason aReason)
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{
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if (!mAudioSessionControl)
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return S_OK;
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mAudioSessionControl->UnregisterAudioSessionNotification(this);
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mAudioSessionControl = nsnull;
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Start(); // If it fails there's not much we can do
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return S_OK;
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}
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STDMETHODIMP
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AudioSession::OnSimpleVolumeChanged(float aVolume,
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BOOL aMute,
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LPCGUID aContext)
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{
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return S_OK; // NOOP
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}
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STDMETHODIMP
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AudioSession::OnStateChanged(AudioSessionState aState)
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{
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return S_OK; // NOOP
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}
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} // namespace widget
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} // namespace mozilla
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#endif // MOZ_NTDDI_LONGHORN
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@ -0,0 +1,50 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
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*
|
||||
* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* The contents of this file are subject to the Mozilla Public License Version
|
||||
* 1.1 (the "License"); you may not use this file except in compliance with
|
||||
* the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/MPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS" basis,
|
||||
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing rights and limitations under the
|
||||
* License.
|
||||
*
|
||||
* The Original Code is mozilla.org code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is
|
||||
* Kyle Huey <me@kylehuey.com>
|
||||
* Portions created by the Initial Developer are Copyright (C) 2010
|
||||
* the Initial Developer. All Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
||||
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
||||
* in which case the provisions of the GPL or the LGPL are applicable instead
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the MPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the MPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
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#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
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namespace mozilla {
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namespace widget {
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nsresult StartAudioSession();
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nsresult StopAudioSession();
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} // namespace widget
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} // namespace mozilla
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#endif // MOZ_WINSK_TARGETVER >= MOZ_NTDDI_LONGHORN
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@ -73,6 +73,7 @@ CPPSRCS = \
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JumpListItem.cpp \
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GfxInfo.cpp \
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WidgetTraceEvent.cpp \
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AudioSession.cpp \
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$(NULL)
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ifdef MOZ_CRASHREPORTER
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@ -116,6 +117,8 @@ endif
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EXPORTS = nsdefs.h WindowHook.h
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EXPORTS_NAMESPACES = mozilla/widget
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EXPORTS_mozilla/widget = AudioSession.h
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LOCAL_INCLUDES = \
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-I. \
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|
|
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@ -45,6 +45,7 @@
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#include "WinTaskbar.h"
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#include "nsString.h"
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#include "nsIMM32Handler.h"
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#include "mozilla/widget/AudioSession.h"
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// For skidmark code
|
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#include <windows.h>
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|
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@ -244,10 +245,20 @@ nsAppShell::Run(void)
|
|||
{
|
||||
LoadedModuleInfo modules[NUM_LOADEDMODULEINFO];
|
||||
memset(modules, 0, sizeof(modules));
|
||||
sLoadedModules = modules;
|
||||
sLoadedModules = modules;
|
||||
|
||||
#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
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// Ignore failure; failing to start the application is not exactly an
|
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// appropriate response to failing to start an audio session.
|
||||
mozilla::widget::StartAudioSession();
|
||||
#endif
|
||||
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||||
nsresult rv = nsBaseAppShell::Run();
|
||||
|
||||
#ifdef MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
|
||||
mozilla::widget::StopAudioSession();
|
||||
#endif
|
||||
|
||||
// Don't forget to null this out!
|
||||
sLoadedModules = nsnull;
|
||||
|
||||
|
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