pull from trunk

5 files changed, 1479 insertions, 0 deletions

diff --git a/indra/media_plugins/cef/CMakeLists.txt b/indra/media_plugins/cef/CMakeLists.txt
new file mode 100644
index 0000000000..1f6163e41e
--- /dev/null
+++ b/indra/media_plugins/cef/CMakeLists.txt
@@ -0,0 +1,117 @@
+# -*- cmake -*-
+
+project(media_plugin_cef)
+
+include(00-Common)
+include(LLCommon)
+include(LLImage)
+include(LLPlugin)
+include(LLMath)
+include(LLRender)
+include(LLWindow)
+include(Linking)
+include(PluginAPI)
+include(MediaPluginBase)
+include(OpenGL)
+
+include(CEFPlugin)
+
+include_directories(
+    ${LLPLUGIN_INCLUDE_DIRS}
+    ${MEDIA_PLUGIN_BASE_INCLUDE_DIRS}
+    ${LLCOMMON_INCLUDE_DIRS}
+    ${LLMATH_INCLUDE_DIRS}
+    ${LLIMAGE_INCLUDE_DIRS}
+    ${LLRENDER_INCLUDE_DIRS}
+    ${LLWINDOW_INCLUDE_DIRS}
+    ${CEF_INCLUDE_DIR}
+)
+include_directories(SYSTEM
+    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
+    )
+
+
+### media_plugin_cef
+
+if(NOT WORD_SIZE EQUAL 32)
+  if(WINDOWS)
+    add_definitions(/FIXED:NO)
+  else(WINDOWS) # not windows therefore gcc LINUX and DARWIN
+    add_definitions(-fPIC)
+  endif(WINDOWS)
+endif(NOT WORD_SIZE EQUAL 32)
+
+set(media_plugin_cef_SOURCE_FILES
+    media_plugin_cef.cpp
+    )
+
+set(media_plugin_cef_HEADER_FILES
+    volume_catcher.h
+    )
+
+set (media_plugin_cef_LINK_LIBRARIES
+  ${LLPLUGIN_LIBRARIES}
+  ${MEDIA_PLUGIN_BASE_LIBRARIES}
+  ${LLCOMMON_LIBRARIES}
+  ${CEF_PLUGIN_LIBRARIES}
+  ${PLUGIN_API_WINDOWS_LIBRARIES})
+
+
+# Select which VolumeCatcher implementation to use
+if (LINUX)
+  message(FATAL_ERROR "CEF plugin has been enabled for a Linux compile.\n"
+    "  Please create a volume_catcher implementation for this platform.")
+
+elseif (DARWIN)
+  list(APPEND media_plugin_cef_SOURCE_FILES mac_volume_catcher.cpp)
+  find_library(CORESERVICES_LIBRARY CoreServices)
+  find_library(AUDIOUNIT_LIBRARY AudioUnit)
+  list(APPEND media_plugin_cef_LINK_LIBRARIES
+       ${CORESERVICES_LIBRARY}     # for Component Manager calls
+       ${AUDIOUNIT_LIBRARY}        # for AudioUnit calls
+       )
+elseif (WINDOWS)
+  list(APPEND media_plugin_cef_SOURCE_FILES windows_volume_catcher.cpp)
+endif (LINUX)
+
+set_source_files_properties(${media_plugin_cef_HEADER_FILES}
+                            PROPERTIES HEADER_FILE_ONLY TRUE)
+
+list(APPEND media_plugin_cef_SOURCE_FILES ${media_plugin_cef_HEADER_FILES})
+
+add_library(media_plugin_cef
+    SHARED
+    ${media_plugin_cef_SOURCE_FILES}
+)
+
+add_dependencies(media_plugin_cef
+  ${LLPLUGIN_LIBRARIES}
+  ${MEDIA_PLUGIN_BASE_LIBRARIES}
+  ${LLCOMMON_LIBRARIES}
+)
+
+target_link_libraries(media_plugin_cef
+  ${media_plugin_cef_LINK_LIBRARIES}
+)
+
+if (WINDOWS)
+  set_target_properties(
+    media_plugin_cef
+    PROPERTIES
+    LINK_FLAGS "/MANIFEST:NO /SAFESEH:NO /LTCG /NODEFAULTLIB:LIBCMT"
+    LINK_FLAGS_DEBUG "/MANIFEST:NO /SAFESEH:NO /NODEFAULTLIB:LIBCMTD"
+    )
+endif (WINDOWS)
+
+if (DARWIN)
+  # Don't prepend 'lib' to the executable name, and don't embed a full path in the library's install name
+  set_target_properties(
+    media_plugin_cef
+    PROPERTIES
+    PREFIX ""
+    BUILD_WITH_INSTALL_RPATH 1
+    INSTALL_NAME_DIR "@executable_path"
+    LINK_FLAGS "-exported_symbols_list ${CMAKE_CURRENT_SOURCE_DIR}/../base/media_plugin_base.exp"
+  )
+
+endif (DARWIN)
diff --git a/indra/media_plugins/cef/mac_volume_catcher.cpp b/indra/media_plugins/cef/mac_volume_catcher.cpp
new file mode 100644
index 0000000000..dddb9c2077
--- /dev/null
+++ b/indra/media_plugins/cef/mac_volume_catcher.cpp
@@ -0,0 +1,275 @@
+/** 
+ * @file mac_volume_catcher.cpp
+ * @brief A Mac OS X specific hack to control the volume level of all audio channels opened by a process.
+ *
+ * @cond
+ * $LicenseInfo:firstyear=2010&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ * @endcond
+ */
+
+/**************************************************************************************************************
+	This code works by using CaptureComponent to capture the "Default Output" audio component
+	(kAudioUnitType_Output/kAudioUnitSubType_DefaultOutput) and delegating all calls to the original component.
+	It does this just to keep track of all instances of the default output component, so that it can set the
+	kHALOutputParam_Volume parameter on all of them to adjust the output volume.
+**************************************************************************************************************/
+
+#include "volume_catcher.h"
+
+#include <QuickTime/QuickTime.h>
+#include <AudioUnit/AudioUnit.h>
+#include <list>
+
+#if LL_DARWIN
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
+
+struct VolumeCatcherStorage;
+
+class VolumeCatcherImpl
+{
+public:
+
+	void setVolume(F32 volume);
+	void setPan(F32 pan);
+	
+	void setInstanceVolume(VolumeCatcherStorage *instance);
+	
+	std::list<VolumeCatcherStorage*> mComponentInstances;
+	Component mOriginalDefaultOutput;
+	Component mVolumeAdjuster;
+	
+	static VolumeCatcherImpl *getInstance();
+private:
+	// This is a singleton class -- both callers and the component implementation should use getInstance() to find the instance.
+	VolumeCatcherImpl();
+	static VolumeCatcherImpl *sInstance;
+	
+	// The singlar instance of this class is expected to last until the process exits.
+	// To ensure this, we declare the destructor here but never define it, so any code which attempts to destroy the instance will not link.
+	~VolumeCatcherImpl();	
+	
+	F32 mVolume;
+	F32 mPan;
+};
+
+VolumeCatcherImpl *VolumeCatcherImpl::sInstance = NULL;;
+
+struct VolumeCatcherStorage
+{
+	ComponentInstance self;
+	ComponentInstance delegate;
+};
+
+static ComponentResult volume_catcher_component_entry(ComponentParameters *cp, Handle componentStorage);
+static ComponentResult volume_catcher_component_open(VolumeCatcherStorage *storage, ComponentInstance self);
+static ComponentResult volume_catcher_component_close(VolumeCatcherStorage *storage, ComponentInstance self);
+
+VolumeCatcherImpl *VolumeCatcherImpl::getInstance()
+{
+	if(!sInstance)
+	{
+		sInstance = new VolumeCatcherImpl;
+	}
+	
+	return sInstance;
+}
+
+VolumeCatcherImpl::VolumeCatcherImpl()
+{
+	mVolume = 1.0;	// default to full volume
+	mPan = 0.0;		// and center pan
+		
+	ComponentDescription desc;
+	desc.componentType = kAudioUnitType_Output;
+	desc.componentSubType = kAudioUnitSubType_DefaultOutput;
+	desc.componentManufacturer = kAudioUnitManufacturer_Apple;
+	desc.componentFlags = 0;
+	desc.componentFlagsMask = 0;
+	
+	// Find the original default output component
+	mOriginalDefaultOutput = FindNextComponent(NULL, &desc);
+
+	// Register our own output component with the same parameters
+	mVolumeAdjuster = RegisterComponent(&desc, NewComponentRoutineUPP(volume_catcher_component_entry), 0, NULL, NULL, NULL);
+
+	// Capture the original component, so we always get found instead.
+	CaptureComponent(mOriginalDefaultOutput, mVolumeAdjuster);
+
+}
+
+static ComponentResult volume_catcher_component_entry(ComponentParameters *cp, Handle componentStorage)
+{
+	ComponentResult result = badComponentSelector;
+	VolumeCatcherStorage *storage = (VolumeCatcherStorage*)componentStorage;
+	
+	switch(cp->what)
+	{
+		case kComponentOpenSelect:
+//			std::cerr << "kComponentOpenSelect" << std::endl;
+			result = CallComponentFunctionWithStorageProcInfo((Handle)storage, cp, (ProcPtr)volume_catcher_component_open, uppCallComponentOpenProcInfo);
+		break;
+
+		case kComponentCloseSelect:
+//			std::cerr << "kComponentCloseSelect" << std::endl;
+			result = CallComponentFunctionWithStorageProcInfo((Handle)storage, cp, (ProcPtr)volume_catcher_component_close, uppCallComponentCloseProcInfo);
+			// CallComponentFunctionWithStorageProcInfo
+		break;
+		
+		default:
+//			std::cerr << "Delegating selector: " << cp->what << " to component instance " << storage->delegate << std::endl;
+			result = DelegateComponentCall(cp, storage->delegate);
+		break;
+	}
+	
+	return result;
+}
+
+static ComponentResult volume_catcher_component_open(VolumeCatcherStorage *storage, ComponentInstance self)
+{
+	ComponentResult result = noErr;
+	VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance();	
+	
+	storage = new VolumeCatcherStorage;
+
+	storage->self = self;
+	storage->delegate = NULL;
+
+	result = OpenAComponent(impl->mOriginalDefaultOutput, &(storage->delegate));
+	
+	if(result != noErr)
+	{
+//		std::cerr << "OpenAComponent result = " << result << ", component ref = " << storage->delegate << std::endl;
+		
+		// If we failed to open the delagate component, our open is going to fail.  Clean things up.
+		delete storage;
+	}
+	else
+	{
+		// Success -- set up this component's storage
+		SetComponentInstanceStorage(self, (Handle)storage);
+
+		// add this instance to the global list
+		impl->mComponentInstances.push_back(storage);	
+		
+		// and set up the initial volume
+		impl->setInstanceVolume(storage);
+	}
+
+	return result;
+}
+
+static ComponentResult volume_catcher_component_close(VolumeCatcherStorage *storage, ComponentInstance self)
+{
+	ComponentResult result = noErr;
+	
+	if(storage)
+	{
+		if(storage->delegate)
+		{
+			CloseComponent(storage->delegate);
+			storage->delegate = NULL;
+		}
+		
+		VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance();	
+		impl->mComponentInstances.remove(storage);
+		delete[] storage;
+	}
+		
+	return result;
+}
+
+void VolumeCatcherImpl::setVolume(F32 volume)
+{
+	VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance();	
+	impl->mVolume = volume;
+	
+	// Iterate through all known instances, setting the volume on each.
+	for(std::list<VolumeCatcherStorage*>::iterator iter = mComponentInstances.begin(); iter != mComponentInstances.end(); ++iter)
+	{
+		impl->setInstanceVolume(*iter);
+	}
+}
+
+void VolumeCatcherImpl::setPan(F32 pan)
+{
+	VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance();	
+	impl->mPan = pan;
+	
+	// TODO: implement this.
+	// This will probably require adding a "panner" audio unit to the chain somehow.
+	// There's also a "3d mixer" component that we might be able to use...
+}
+
+void VolumeCatcherImpl::setInstanceVolume(VolumeCatcherStorage *instance)
+{
+//	std::cerr << "Setting volume on component instance: " << (instance->delegate) << " to " << mVolume << std::endl;
+	
+	OSStatus err = noErr;
+	
+	if(instance && instance->delegate)
+	{
+		err = AudioUnitSetParameter(
+				instance->delegate, 
+				kHALOutputParam_Volume, 
+				kAudioUnitScope_Global,
+				0, 
+				mVolume, 
+				0);
+	}
+	
+	if(err)
+	{
+//		std::cerr << "    AudioUnitSetParameter returned " << err << std::endl;
+	}
+}
+
+/////////////////////////////////////////////////////
+
+VolumeCatcher::VolumeCatcher()
+{
+	pimpl = VolumeCatcherImpl::getInstance();
+}
+
+VolumeCatcher::~VolumeCatcher()
+{
+	// Let the instance persist until exit.
+}
+
+void VolumeCatcher::setVolume(F32 volume)
+{
+	pimpl->setVolume(volume);
+}
+
+void VolumeCatcher::setPan(F32 pan)
+{
+	pimpl->setPan(pan);
+}
+
+void VolumeCatcher::pump()
+{
+	// No periodic tasks are necessary for this implementation.
+}
+
+#if LL_DARWIN
+#pragma GCC diagnostic warning "-Wdeprecated-declarations"
+#endif
diff --git a/indra/media_plugins/cef/media_plugin_cef.cpp b/indra/media_plugins/cef/media_plugin_cef.cpp
new file mode 100644
index 0000000000..9028f73e30
--- /dev/null
+++ b/indra/media_plugins/cef/media_plugin_cef.cpp
@@ -0,0 +1,886 @@
+/**
+* @file media_plugin_cef.cpp
+* @brief CEF (Chromium Embedding Framework) plugin for LLMedia API plugin system
+*
+* @cond
+* $LicenseInfo:firstyear=2008&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2010, Linden Research, Inc.
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+* @endcond
+*/
+
+#include "linden_common.h"
+#include "indra_constants.h" // for indra keyboard codes
+
+#include "llgl.h"
+#include "llsdutil.h"
+#include "llplugininstance.h"
+#include "llpluginmessage.h"
+#include "llpluginmessageclasses.h"
+#include "media_plugin_base.h"
+
+#include "boost/function.hpp"
+#include "boost/bind.hpp"
+#include "llCEFLib.h"
+#include "volume_catcher.h"
+
+////////////////////////////////////////////////////////////////////////////////
+//
+class MediaPluginCEF :
+	public MediaPluginBase
+{
+public:
+	MediaPluginCEF(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data);
+	~MediaPluginCEF();
+
+	/*virtual*/
+	void receiveMessage(const char* message_string);
+
+private:
+	bool init();
+
+	void onPageChangedCallback(unsigned char* pixels, int x, int y, int width, int height, bool is_popup);
+	void onCustomSchemeURLCallback(std::string url);
+	void onConsoleMessageCallback(std::string message, std::string source, int line);
+	void onStatusMessageCallback(std::string value);
+	void onTitleChangeCallback(std::string title);
+	void onLoadStartCallback();
+	void onRequestExitCallback();
+	void onLoadEndCallback(int httpStatusCode);
+	void onAddressChangeCallback(std::string url);
+	void onNavigateURLCallback(std::string url, std::string target);
+	bool onHTTPAuthCallback(const std::string host, const std::string realm, std::string& username, std::string& password);
+	void onCursorChangedCallback(LLCEFLib::ECursorType type, unsigned int handle);
+	void onFileDownloadCallback(std::string filename);
+
+	void postDebugMessage(const std::string& msg);
+	void authResponse(LLPluginMessage &message);
+
+	LLCEFLib::EKeyboardModifier decodeModifiers(std::string &modifiers);
+	void deserializeKeyboardData(LLSD native_key_data, uint32_t& native_scan_code, uint32_t& native_virtual_key, uint32_t& native_modifiers);
+	void keyEvent(LLCEFLib::EKeyEvent key_event, int key, LLCEFLib::EKeyboardModifier modifiers, LLSD native_key_data);
+	void unicodeInput(const std::string &utf8str, LLCEFLib::EKeyboardModifier modifiers, LLSD native_key_data);
+
+	void checkEditState();
+    void setVolume(F32 vol);
+
+	bool mEnableMediaPluginDebugging;
+	std::string mHostLanguage;
+	bool mCookiesEnabled;
+	bool mPluginsEnabled;
+	bool mJavascriptEnabled;
+	std::string mUserAgentSubtring;
+	std::string mAuthUsername;
+	std::string mAuthPassword;
+	bool mAuthOK;
+	bool mCanCut;
+	bool mCanCopy;
+	bool mCanPaste;
+	std::string mCachePath;
+	std::string mCookiePath;
+	LLCEFLib* mLLCEFLib;
+
+    VolumeCatcher mVolumeCatcher;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//
+MediaPluginCEF::MediaPluginCEF(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data) :
+MediaPluginBase(host_send_func, host_user_data)
+{
+	mWidth = 0;
+	mHeight = 0;
+	mDepth = 4;
+	mPixels = 0;
+	mEnableMediaPluginDebugging = true;
+	mHostLanguage = "en";
+	mCookiesEnabled = true;
+	mPluginsEnabled = false;
+	mJavascriptEnabled = true;
+	mUserAgentSubtring = "";
+	mAuthUsername = "";
+	mAuthPassword = "";
+	mAuthOK = false;
+	mCanCut = false;
+	mCanCopy = false;
+	mCanPaste = false;
+	mCachePath = "";
+	mCookiePath = "";
+	mLLCEFLib = new LLCEFLib();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+MediaPluginCEF::~MediaPluginCEF()
+{
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::postDebugMessage(const std::string& msg)
+{
+	if (mEnableMediaPluginDebugging)
+	{
+		std::stringstream str;
+		str << "@Media Msg> " << msg;
+
+		LLPluginMessage debug_message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "debug_message");
+		debug_message.setValue("message_text", str.str());
+		debug_message.setValue("message_level", "info");
+		sendMessage(debug_message);
+	}
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::onPageChangedCallback(unsigned char* pixels, int x, int y, int width, int height, bool is_popup)
+{
+	if (mPixels && pixels)
+	{
+		if (is_popup)
+		{
+			for (int line = 0; line < height; ++line)
+			{
+				int inverted_y = mHeight - y - height;
+				int src = line * width * mDepth;
+				int dst = (inverted_y + line) * mWidth * mDepth + x * mDepth;
+
+				if (dst + width * mDepth < mWidth * mHeight * mDepth)
+				{
+					memcpy(mPixels + dst, pixels + src, width * mDepth);
+				}
+			}
+		}
+		else
+		{
+			if (mWidth == width && mHeight == height)
+			{
+				memcpy(mPixels, pixels, mWidth * mHeight * mDepth);
+			}
+
+		}
+		setDirty(0, 0, mWidth, mHeight);
+	}
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::onConsoleMessageCallback(std::string message, std::string source, int line)
+{
+	std::stringstream str;
+	str << "Console message: " << message << " in file(" << source << ") at line " << line;
+	postDebugMessage(str.str());
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::onStatusMessageCallback(std::string value)
+{
+	LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "status_text");
+	message.setValue("status", value);
+	sendMessage(message);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::onTitleChangeCallback(std::string title)
+{
+	LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "name_text");
+	message.setValue("name", title);
+	sendMessage(message);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::onLoadStartCallback()
+{
+	LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "navigate_begin");
+	//message.setValue("uri", event.getEventUri());  // not easily available here in CEF - needed?
+	message.setValueBoolean("history_back_available", mLLCEFLib->canGoBack());
+	message.setValueBoolean("history_forward_available", mLLCEFLib->canGoForward());
+	sendMessage(message);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::onRequestExitCallback()
+{
+	mLLCEFLib->shutdown();
+
+	LLPluginMessage message("base", "goodbye");
+	sendMessage(message);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::onLoadEndCallback(int httpStatusCode)
+{
+	LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "navigate_complete");
+	//message.setValue("uri", event.getEventUri());  // not easily available here in CEF - needed?
+	message.setValueS32("result_code", httpStatusCode);
+	message.setValueBoolean("history_back_available", mLLCEFLib->canGoBack());
+	message.setValueBoolean("history_forward_available", mLLCEFLib->canGoForward());
+	sendMessage(message);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::onAddressChangeCallback(std::string url)
+{
+	LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "location_changed");
+	message.setValue("uri", url);
+	sendMessage(message);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::onNavigateURLCallback(std::string url, std::string target)
+{
+	LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "click_href");
+	message.setValue("uri", url);
+	message.setValue("target", target);
+	message.setValue("uuid", "");	// not used right now
+	sendMessage(message);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::onCustomSchemeURLCallback(std::string url)
+{
+	LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "click_nofollow");
+	message.setValue("uri", url);
+	message.setValue("nav_type", "clicked");	// TODO: differentiate between click and navigate to
+	sendMessage(message);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+bool MediaPluginCEF::onHTTPAuthCallback(const std::string host, const std::string realm, std::string& username, std::string& password)
+{
+	mAuthOK = false;
+
+	LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "auth_request");
+	message.setValue("url", host);
+	message.setValue("realm", realm);
+	message.setValueBoolean("blocking_request", true);
+
+	// The "blocking_request" key in the message means this sendMessage call will block until a response is received.
+	sendMessage(message);
+
+	if (mAuthOK)
+	{
+		username = mAuthUsername;
+		password = mAuthPassword;
+	}
+
+	return mAuthOK;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::onFileDownloadCallback(const std::string filename)
+{
+	mAuthOK = false;
+
+	LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "file_download");
+	message.setValue("filename", filename);
+
+	sendMessage(message);
+}
+
+void MediaPluginCEF::onCursorChangedCallback(LLCEFLib::ECursorType type, unsigned int handle)
+{
+	std::string name = "";
+
+	switch (type)
+	{
+		case LLCEFLib::CT_POINTER:
+			name = "arrow";
+			break;
+		case LLCEFLib::CT_IBEAM:
+			name = "ibeam";
+			break;
+		case LLCEFLib::CT_NORTHSOUTHRESIZE:
+			name = "splitv";
+			break;
+		case LLCEFLib::CT_EASTWESTRESIZE:
+			name = "splith";
+			break;
+		case LLCEFLib::CT_HAND:
+			name = "hand";
+			break;
+
+		default:
+			LL_WARNS() << "Unknown cursor ID: " << (int)type << LL_ENDL;
+			break;
+	}
+
+	LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "cursor_changed");
+	message.setValue("name", name);
+	sendMessage(message);
+}
+
+void MediaPluginCEF::authResponse(LLPluginMessage &message)
+{
+	mAuthOK = message.getValueBoolean("ok");
+	if (mAuthOK)
+	{
+		mAuthUsername = message.getValue("username");
+		mAuthPassword = message.getValue("password");
+	}
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::receiveMessage(const char* message_string)
+{
+	//  std::cerr << "MediaPluginCEF::receiveMessage: received message: \"" << message_string << "\"" << std::endl;
+	LLPluginMessage message_in;
+
+	if (message_in.parse(message_string) >= 0)
+	{
+		std::string message_class = message_in.getClass();
+		std::string message_name = message_in.getName();
+		if (message_class == LLPLUGIN_MESSAGE_CLASS_BASE)
+		{
+			if (message_name == "init")
+			{
+				LLPluginMessage message("base", "init_response");
+				LLSD versions = LLSD::emptyMap();
+				versions[LLPLUGIN_MESSAGE_CLASS_BASE] = LLPLUGIN_MESSAGE_CLASS_BASE_VERSION;
+				versions[LLPLUGIN_MESSAGE_CLASS_MEDIA] = LLPLUGIN_MESSAGE_CLASS_MEDIA_VERSION;
+				versions[LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER] = LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER_VERSION;
+				message.setValueLLSD("versions", versions);
+
+				std::string plugin_version = "CEF plugin 1.1.3";
+				message.setValue("plugin_version", plugin_version);
+				sendMessage(message);
+			}
+			else if (message_name == "idle")
+			{
+				mLLCEFLib->update();
+
+                mVolumeCatcher.pump();
+				// this seems bad but unless the state changes (it won't until we figure out
+				// how to get CEF to tell us if copy/cut/paste is available) then this function
+				// will return immediately
+				checkEditState();
+			}
+			else if (message_name == "cleanup")
+			{
+				mLLCEFLib->requestExit();
+			}
+			else if (message_name == "shm_added")
+			{
+				SharedSegmentInfo info;
+				info.mAddress = message_in.getValuePointer("address");
+				info.mSize = (size_t)message_in.getValueS32("size");
+				std::string name = message_in.getValue("name");
+
+				mSharedSegments.insert(SharedSegmentMap::value_type(name, info));
+
+			}
+			else if (message_name == "shm_remove")
+			{
+				std::string name = message_in.getValue("name");
+
+				SharedSegmentMap::iterator iter = mSharedSegments.find(name);
+				if (iter != mSharedSegments.end())
+				{
+					if (mPixels == iter->second.mAddress)
+					{
+						mPixels = NULL;
+						mTextureSegmentName.clear();
+					}
+					mSharedSegments.erase(iter);
+				}
+				else
+				{
+				}
+
+				LLPluginMessage message("base", "shm_remove_response");
+				message.setValue("name", name);
+				sendMessage(message);
+			}
+			else
+			{
+			}
+		}
+		else if (message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA)
+		{
+			if (message_name == "init")
+			{
+				// event callbacks from LLCefLib
+				mLLCEFLib->setOnPageChangedCallback(boost::bind(&MediaPluginCEF::onPageChangedCallback, this, _1, _2, _3, _4, _5, _6));
+				mLLCEFLib->setOnCustomSchemeURLCallback(boost::bind(&MediaPluginCEF::onCustomSchemeURLCallback, this, _1));
+				mLLCEFLib->setOnConsoleMessageCallback(boost::bind(&MediaPluginCEF::onConsoleMessageCallback, this, _1, _2, _3));
+				mLLCEFLib->setOnStatusMessageCallback(boost::bind(&MediaPluginCEF::onStatusMessageCallback, this, _1));
+				mLLCEFLib->setOnTitleChangeCallback(boost::bind(&MediaPluginCEF::onTitleChangeCallback, this, _1));
+				mLLCEFLib->setOnLoadStartCallback(boost::bind(&MediaPluginCEF::onLoadStartCallback, this));
+				mLLCEFLib->setOnLoadEndCallback(boost::bind(&MediaPluginCEF::onLoadEndCallback, this, _1));
+				mLLCEFLib->setOnAddressChangeCallback(boost::bind(&MediaPluginCEF::onAddressChangeCallback, this, _1));
+				mLLCEFLib->setOnNavigateURLCallback(boost::bind(&MediaPluginCEF::onNavigateURLCallback, this, _1, _2));
+				mLLCEFLib->setOnHTTPAuthCallback(boost::bind(&MediaPluginCEF::onHTTPAuthCallback, this, _1, _2, _3, _4));
+				mLLCEFLib->setOnFileDownloadCallback(boost::bind(&MediaPluginCEF::onFileDownloadCallback, this, _1));
+				mLLCEFLib->setOnCursorChangedCallback(boost::bind(&MediaPluginCEF::onCursorChangedCallback, this, _1, _2));
+				mLLCEFLib->setOnRequestExitCallback(boost::bind(&MediaPluginCEF::onRequestExitCallback, this));
+
+				LLCEFLib::LLCEFLibSettings settings;
+				settings.initial_width = 1024;
+				settings.initial_height = 1024;
+				settings.plugins_enabled = mPluginsEnabled;
+				settings.media_stream_enabled = false; // MAINT-6060 - WebRTC media removed until we can add granualrity/query UI
+				settings.javascript_enabled = mJavascriptEnabled;
+				settings.cookies_enabled = mCookiesEnabled;
+				settings.cookie_store_path = mCookiePath;
+				settings.cache_enabled = true;
+				settings.cache_path = mCachePath;
+				settings.accept_language_list = mHostLanguage;
+				settings.user_agent_substring = mLLCEFLib->makeCompatibleUserAgentString(mUserAgentSubtring);
+
+				bool result = mLLCEFLib->init(settings);
+				if (!result)
+				{
+					// if this fails, the media system in viewer will put up a message
+				}
+
+				// Plugin gets to decide the texture parameters to use.
+				mDepth = 4;
+				LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "texture_params");
+				message.setValueS32("default_width", 1024);
+				message.setValueS32("default_height", 1024);
+				message.setValueS32("depth", mDepth);
+				message.setValueU32("internalformat", GL_RGB);
+				message.setValueU32("format", GL_BGRA);
+				message.setValueU32("type", GL_UNSIGNED_BYTE);
+				message.setValueBoolean("coords_opengl", true);
+				sendMessage(message);
+			}
+			else if (message_name == "set_user_data_path")
+			{
+				std::string user_data_path_cache = message_in.getValue("cache_path");
+				std::string user_data_path_cookies = message_in.getValue("cookies_path");
+				mCachePath = user_data_path_cache + "cef_cache";
+				mCookiePath = user_data_path_cookies + "cef_cookies";
+			}
+			else if (message_name == "size_change")
+			{
+				std::string name = message_in.getValue("name");
+				S32 width = message_in.getValueS32("width");
+				S32 height = message_in.getValueS32("height");
+				S32 texture_width = message_in.getValueS32("texture_width");
+				S32 texture_height = message_in.getValueS32("texture_height");
+
+				if (!name.empty())
+				{
+					// Find the shared memory region with this name
+					SharedSegmentMap::iterator iter = mSharedSegments.find(name);
+					if (iter != mSharedSegments.end())
+					{
+						mPixels = (unsigned char*)iter->second.mAddress;
+						mWidth = width;
+						mHeight = height;
+
+						mTextureWidth = texture_width;
+						mTextureHeight = texture_height;
+					};
+				};
+
+				mLLCEFLib->setSize(mWidth, mHeight);
+
+				LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "size_change_response");
+				message.setValue("name", name);
+				message.setValueS32("width", width);
+				message.setValueS32("height", height);
+				message.setValueS32("texture_width", texture_width);
+				message.setValueS32("texture_height", texture_height);
+				sendMessage(message);
+
+			}
+			else if (message_name == "set_language_code")
+			{
+				mHostLanguage = message_in.getValue("language");
+			}
+			else if (message_name == "load_uri")
+			{
+				std::string uri = message_in.getValue("uri");
+				mLLCEFLib->navigate(uri);
+			}
+			else if (message_name == "set_cookie")
+			{
+				std::string uri = message_in.getValue("uri");
+				std::string name = message_in.getValue("name");
+				std::string value = message_in.getValue("value");
+				std::string domain = message_in.getValue("domain");
+				std::string path = message_in.getValue("path");
+				bool httponly = message_in.getValueBoolean("httponly");
+				bool secure = message_in.getValueBoolean("secure");
+				mLLCEFLib->setCookie(uri, name, value, domain, path, httponly, secure);
+			}
+			else if (message_name == "mouse_event")
+			{
+				std::string event = message_in.getValue("event");
+
+				S32 x = message_in.getValueS32("x");
+				S32 y = message_in.getValueS32("y");
+
+				// only even send left mouse button events to LLCEFLib
+				// (partially prompted by crash in OS X CEF when sending right button events)
+				// we catch the right click in viewer and display our own context menu anyway
+				S32 button = message_in.getValueS32("button");
+				LLCEFLib::EMouseButton btn = LLCEFLib::MB_MOUSE_BUTTON_LEFT;
+
+				if (event == "down" && button == 0)
+				{
+					mLLCEFLib->mouseButton(btn, LLCEFLib::ME_MOUSE_DOWN, x, y);
+					mLLCEFLib->setFocus(true);
+
+					std::stringstream str;
+					str << "Mouse down at = " << x << ", " << y;
+					postDebugMessage(str.str());
+				}
+				else if (event == "up" && button == 0)
+				{
+					mLLCEFLib->mouseButton(btn, LLCEFLib::ME_MOUSE_UP, x, y);
+
+					std::stringstream str;
+					str << "Mouse up at = " << x << ", " << y;
+					postDebugMessage(str.str());
+				}
+				else if (event == "double_click")
+				{
+					mLLCEFLib->mouseButton(btn, LLCEFLib::ME_MOUSE_DOUBLE_CLICK, x, y);
+				}
+				else
+				{
+					mLLCEFLib->mouseMove(x, y);
+				}
+			}
+			else if (message_name == "scroll_event")
+			{
+				S32 x = message_in.getValueS32("x");
+				S32 y = message_in.getValueS32("y");
+				const int scaling_factor = 40;
+				y *= -scaling_factor;
+
+				mLLCEFLib->mouseWheel(x, y);
+			}
+			else if (message_name == "text_event")
+			{
+				std::string text = message_in.getValue("text");
+				std::string modifiers = message_in.getValue("modifiers");
+				LLSD native_key_data = message_in.getValueLLSD("native_key_data");
+
+				unicodeInput(text, decodeModifiers(modifiers), native_key_data);
+			}
+			else if (message_name == "key_event")
+			{
+#if LL_DARWIN
+				std::string event = message_in.getValue("event");
+				S32 key = message_in.getValueS32("key");
+                LLSD native_key_data = message_in.getValueLLSD("native_key_data");
+
+#if 0
+				if (event == "down")
+				{
+					//mLLCEFLib->keyPress(key, true);
+					mLLCEFLib->keyboardEvent(LLCEFLib::KE_KEY_DOWN, (uint32_t)key, 0, LLCEFLib::KM_MODIFIER_NONE, 0, 0, 0);
+
+				}
+				else if (event == "up")
+				{
+					//mLLCEFLib->keyPress(key, false);
+					mLLCEFLib->keyboardEvent(LLCEFLib::KE_KEY_UP, (uint32_t)key, 0, LLCEFLib::KM_MODIFIER_NONE, 0, 0, 0);
+				}
+#else
+                // Treat unknown events as key-up for safety.
+                LLCEFLib::EKeyEvent key_event = LLCEFLib::KE_KEY_UP;
+                if (event == "down")
+                {
+                    key_event = LLCEFLib::KE_KEY_DOWN;
+                }
+                else if (event == "repeat")
+                {
+                    key_event = LLCEFLib::KE_KEY_REPEAT;
+                }
+
+                keyEvent(key_event, key, LLCEFLib::KM_MODIFIER_NONE, native_key_data);
+
+#endif
+#elif LL_WINDOWS
+				std::string event = message_in.getValue("event");
+				S32 key = message_in.getValueS32("key");
+				std::string modifiers = message_in.getValue("modifiers");
+				LLSD native_key_data = message_in.getValueLLSD("native_key_data");
+
+				// Treat unknown events as key-up for safety.
+				LLCEFLib::EKeyEvent key_event = LLCEFLib::KE_KEY_UP;
+				if (event == "down")
+				{
+					key_event = LLCEFLib::KE_KEY_DOWN;
+				}
+				else if (event == "repeat")
+				{
+					key_event = LLCEFLib::KE_KEY_REPEAT;
+				}
+
+				keyEvent(key_event, key, decodeModifiers(modifiers), native_key_data);
+#endif
+			}
+			else if (message_name == "enable_media_plugin_debugging")
+			{
+				mEnableMediaPluginDebugging = message_in.getValueBoolean("enable");
+			}
+			if (message_name == "auth_response")
+			{
+				authResponse(message_in);
+			}
+			if (message_name == "edit_cut")
+			{
+				mLLCEFLib->editCut();
+			}
+			if (message_name == "edit_copy")
+			{
+				mLLCEFLib->editCopy();
+			}
+			if (message_name == "edit_paste")
+			{
+				mLLCEFLib->editPaste();
+			}
+		}
+		else if (message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER)
+		{
+			if (message_name == "set_page_zoom_factor")
+			{
+				F32 factor = (F32)message_in.getValueReal("factor");
+				mLLCEFLib->setPageZoom(factor);
+			}
+			if (message_name == "browse_stop")
+			{
+				mLLCEFLib->stop();
+			}
+			else if (message_name == "browse_reload")
+			{
+				bool ignore_cache = true;
+				mLLCEFLib->reload(ignore_cache);
+			}
+			else if (message_name == "browse_forward")
+			{
+				mLLCEFLib->goForward();
+			}
+			else if (message_name == "browse_back")
+			{
+				mLLCEFLib->goBack();
+			}
+			else if (message_name == "cookies_enabled")
+			{
+				mCookiesEnabled = message_in.getValueBoolean("enable");
+			}
+			else if (message_name == "set_user_agent")
+			{
+				mUserAgentSubtring = message_in.getValue("user_agent");
+			}
+			else if (message_name == "show_web_inspector")
+			{
+				mLLCEFLib->showDevTools(true);
+			}
+			else if (message_name == "plugins_enabled")
+			{
+				mPluginsEnabled = message_in.getValueBoolean("enable");
+			}
+			else if (message_name == "javascript_enabled")
+			{
+				mJavascriptEnabled = message_in.getValueBoolean("enable");
+			}
+		}
+        else if (message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA_TIME)
+        {
+            if (message_name == "set_volume")
+            {
+                F32 volume = (F32)message_in.getValueReal("volume");
+                setVolume(volume);
+            }
+        }
+        else
+		{
+		};
+	}
+}
+
+LLCEFLib::EKeyboardModifier MediaPluginCEF::decodeModifiers(std::string &modifiers)
+{
+	int result = 0;
+
+	if (modifiers.find("shift") != std::string::npos)
+		result |= LLCEFLib::KM_MODIFIER_SHIFT;
+
+	if (modifiers.find("alt") != std::string::npos)
+		result |= LLCEFLib::KM_MODIFIER_ALT;
+
+	if (modifiers.find("control") != std::string::npos)
+		result |= LLCEFLib::KM_MODIFIER_CONTROL;
+
+	if (modifiers.find("meta") != std::string::npos)
+		result |= LLCEFLib::KM_MODIFIER_META;
+
+	return (LLCEFLib::EKeyboardModifier)result;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::deserializeKeyboardData(LLSD native_key_data, uint32_t& native_scan_code, uint32_t& native_virtual_key, uint32_t& native_modifiers)
+{
+	native_scan_code = 0;
+	native_virtual_key = 0;
+	native_modifiers = 0;
+
+	if (native_key_data.isMap())
+	{
+#if LL_DARWIN
+		native_scan_code = (uint32_t)(native_key_data["char_code"].asInteger());
+		native_virtual_key = (uint32_t)(native_key_data["key_code"].asInteger());
+		native_modifiers = (uint32_t)(native_key_data["modifiers"].asInteger());
+#elif LL_WINDOWS
+		native_scan_code = (uint32_t)(native_key_data["scan_code"].asInteger());
+		native_virtual_key = (uint32_t)(native_key_data["virtual_key"].asInteger());
+		// TODO: I don't think we need to do anything with native modifiers here -- please verify
+#endif
+	};
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::keyEvent(LLCEFLib::EKeyEvent key_event, int key, LLCEFLib::EKeyboardModifier modifiers_x, LLSD native_key_data = LLSD::emptyMap())
+{
+#if LL_DARWIN
+
+    if (!native_key_data.has("event_type") ||
+            !native_key_data.has("event_modifiers") ||
+            !native_key_data.has("event_keycode") ||
+            !native_key_data.has("event_isrepeat"))
+        return;
+
+    uint32_t eventType = native_key_data["event_type"].asInteger();
+    if (!eventType)
+        return;
+    uint32_t eventModifiers = native_key_data["event_modifiers"].asInteger();
+    uint32_t eventKeycode = native_key_data["event_keycode"].asInteger();
+    char eventChars = static_cast<char>(native_key_data["event_chars"].isUndefined() ? 0 : native_key_data["event_chars"].asInteger());
+    char eventUChars = static_cast<char>(native_key_data["event_umodchars"].isUndefined() ? 0 : native_key_data["event_umodchars"].asInteger());
+    bool eventIsRepeat = native_key_data["event_isrepeat"].asBoolean();
+
+    mLLCEFLib->keyboardEventOSX(eventType, eventModifiers, (eventChars) ? &eventChars : NULL,
+                                (eventUChars) ? &eventUChars : NULL, eventIsRepeat, eventKeycode);
+
+#elif LL_WINDOWS
+	U32 msg = ll_U32_from_sd(native_key_data["msg"]);
+	U32 wparam = ll_U32_from_sd(native_key_data["w_param"]);
+	U64 lparam = ll_U32_from_sd(native_key_data["l_param"]);
+
+	mLLCEFLib->nativeKeyboardEvent(msg, wparam, lparam);
+#endif
+};
+
+void MediaPluginCEF::unicodeInput(const std::string &utf8str, LLCEFLib::EKeyboardModifier modifiers, LLSD native_key_data = LLSD::emptyMap())
+{
+#if LL_DARWIN
+	//mLLCEFLib->keyPress(utf8str[0], true);
+	//mLLCEFLib->keyboardEvent(LLCEFLib::KE_KEY_DOWN, (uint32_t)(utf8str[0]), 0, LLCEFLib::KM_MODIFIER_NONE, 0, 0, 0);
+    if (!native_key_data.has("event_chars") || !native_key_data.has("event_umodchars") ||
+            !native_key_data.has("event_keycode") || !native_key_data.has("event_modifiers"))
+        return;
+    uint32_t unicodeChar = native_key_data["event_chars"].asInteger();
+    uint32_t unmodifiedChar = native_key_data["event_umodchars"].asInteger();
+    uint32_t keyCode = native_key_data["event_keycode"].asInteger();
+    uint32_t rawmodifiers = native_key_data["event_modifiers"].asInteger();
+
+    mLLCEFLib->injectUnicodeText(unicodeChar, unmodifiedChar, keyCode, rawmodifiers);
+
+#elif LL_WINDOWS
+	U32 msg = ll_U32_from_sd(native_key_data["msg"]);
+	U32 wparam = ll_U32_from_sd(native_key_data["w_param"]);
+	U64 lparam = ll_U32_from_sd(native_key_data["l_param"]);
+	mLLCEFLib->nativeKeyboardEvent(msg, wparam, lparam);
+#endif
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginCEF::checkEditState()
+{
+	bool can_cut = mLLCEFLib->editCanCut();
+	bool can_copy = mLLCEFLib->editCanCopy();
+	bool can_paste = mLLCEFLib->editCanPaste();
+
+	if ((can_cut != mCanCut) || (can_copy != mCanCopy) || (can_paste != mCanPaste))
+	{
+		LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "edit_state");
+
+		if (can_cut != mCanCut)
+		{
+			mCanCut = can_cut;
+			message.setValueBoolean("cut", can_cut);
+		}
+
+		if (can_copy != mCanCopy)
+		{
+			mCanCopy = can_copy;
+			message.setValueBoolean("copy", can_copy);
+		}
+
+		if (can_paste != mCanPaste)
+		{
+			mCanPaste = can_paste;
+			message.setValueBoolean("paste", can_paste);
+		}
+
+		sendMessage(message);
+	}
+}
+
+void MediaPluginCEF::setVolume(F32 vol)
+{
+    mVolumeCatcher.setVolume(vol);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+bool MediaPluginCEF::init()
+{
+	LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "name_text");
+	message.setValue("name", "CEF Plugin");
+	sendMessage(message);
+
+	return true;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//
+int init_media_plugin(LLPluginInstance::sendMessageFunction host_send_func,
+	void* host_user_data,
+	LLPluginInstance::sendMessageFunction *plugin_send_func,
+	void **plugin_user_data)
+{
+	MediaPluginCEF* self = new MediaPluginCEF(host_send_func, host_user_data);
+	*plugin_send_func = MediaPluginCEF::staticReceiveMessage;
+	*plugin_user_data = (void*)self;
+
+	return 0;
+}
diff --git a/indra/media_plugins/cef/volume_catcher.h b/indra/media_plugins/cef/volume_catcher.h
new file mode 100644
index 0000000000..337f2913d3
--- /dev/null
+++ b/indra/media_plugins/cef/volume_catcher.h
@@ -0,0 +1,54 @@
+/** 
+ * @file volume_catcher.h
+ * @brief Interface to a class with platform-specific implementations that allows control of the audio volume of all sources in the current process.
+ *
+ * @cond
+ * $LicenseInfo:firstyear=2010&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ * @endcond
+ */
+
+#ifndef VOLUME_CATCHER_H
+#define VOLUME_CATCHER_H
+
+#include "linden_common.h"
+
+class VolumeCatcherImpl;
+
+class VolumeCatcher
+{
+ public:
+	VolumeCatcher();
+	~VolumeCatcher();
+
+	void setVolume(F32 volume); // 0.0 - 1.0
+	
+	// Set the left-right pan of audio sources
+	// where -1.0 = left, 0 = center, and 1.0 = right
+	void setPan(F32 pan); 
+
+	void pump(); // call this at least a few times a second if you can - it affects how quickly we can 'catch' a new audio source and adjust its volume
+	
+ private:
+	VolumeCatcherImpl *pimpl;
+};
+
+#endif // VOLUME_CATCHER_H
diff --git a/indra/media_plugins/cef/windows_volume_catcher.cpp b/indra/media_plugins/cef/windows_volume_catcher.cpp
new file mode 100644
index 0000000000..0cfb810906
--- /dev/null
+++ b/indra/media_plugins/cef/windows_volume_catcher.cpp
@@ -0,0 +1,147 @@
+/** 
+ * @file windows_volume_catcher.cpp
+ * @brief A Windows implementation of volume level control of all audio channels opened by a process.
+ *
+ * @cond
+ * $LicenseInfo:firstyear=2010&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ * @endcond
+ */
+
+#include "volume_catcher.h"
+#include <windows.h>
+#include "llsingleton.h"
+class VolumeCatcherImpl : public LLSingleton<VolumeCatcherImpl>
+{
+friend LLSingleton<VolumeCatcherImpl>;
+public:
+
+	void setVolume(F32 volume);
+	void setPan(F32 pan);
+	
+private:
+	// This is a singleton class -- both callers and the component implementation should use getInstance() to find the instance.
+	VolumeCatcherImpl();
+	~VolumeCatcherImpl();
+
+	typedef void (WINAPI *set_volume_func_t)(F32);
+	typedef void (WINAPI *set_mute_func_t)(bool);
+
+	set_volume_func_t mSetVolumeFunc;
+	set_mute_func_t mSetMuteFunc;
+
+	// tests if running on Vista, 7, 8 + once in CTOR
+	bool isWindowsVistaOrHigher();
+
+	F32 	mVolume;
+	F32 	mPan;
+	bool mSystemIsVistaOrHigher;
+};
+
+bool VolumeCatcherImpl::isWindowsVistaOrHigher()
+{
+	OSVERSIONINFO osvi;
+	ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
+	osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+	GetVersionEx(&osvi);
+	return osvi.dwMajorVersion >= 6;
+}
+
+VolumeCatcherImpl::VolumeCatcherImpl()
+:	mVolume(1.0f),			// default volume is max
+	mPan(0.f)				// default pan is centered
+{
+	mSystemIsVistaOrHigher = isWindowsVistaOrHigher();
+
+	if ( ! mSystemIsVistaOrHigher )
+	{
+		HMODULE handle = ::LoadLibrary(L"winmm.dll");
+		if(handle)
+		{
+			mSetVolumeFunc = (set_volume_func_t)::GetProcAddress(handle, "setPluginVolume");
+			mSetMuteFunc = (set_mute_func_t)::GetProcAddress(handle, "setPluginMute");
+		}
+	}
+}
+
+VolumeCatcherImpl::~VolumeCatcherImpl()
+{
+}
+
+void VolumeCatcherImpl::setVolume(F32 volume)
+{
+	mVolume = volume;
+
+	if ( mSystemIsVistaOrHigher )
+	{
+		// set both left/right to same volume
+		// TODO: use pan value to set independently
+		DWORD left_channel  = (DWORD)(mVolume * 65535.0f);
+		DWORD right_channel =  (DWORD)(mVolume * 65535.0f);
+		DWORD hw_volume = left_channel << 16 | right_channel;
+		::waveOutSetVolume(NULL, hw_volume);
+	}
+	else
+	{
+		if (mSetMuteFunc)
+		{
+			mSetMuteFunc(volume == 0.f);
+		}
+		if (mSetVolumeFunc)
+		{
+			mSetVolumeFunc(mVolume);
+		}
+	}
+}
+
+void VolumeCatcherImpl::setPan(F32 pan)
+{	// remember pan for calculating individual channel levels later
+	mPan = pan;
+}
+
+/////////////////////////////////////////////////////
+
+VolumeCatcher::VolumeCatcher()
+{
+	pimpl = VolumeCatcherImpl::getInstance();
+}
+
+VolumeCatcher::~VolumeCatcher()
+{
+	// Let the instance persist until exit.
+}
+
+void VolumeCatcher::setVolume(F32 volume)
+{
+	pimpl->setVolume(volume);
+}
+
+void VolumeCatcher::setPan(F32 pan)
+{
+	pimpl->setPan(pan);
+}
+
+void VolumeCatcher::pump()
+{
+	// No periodic tasks are necessary for this implementation.
+}
+
+