start to build up this code

1 files changed, 1009 insertions, 0 deletions

diff --git a/indra/media_plugins/webkit/linux_volume_catcher.cpp b/indra/media_plugins/webkit/linux_volume_catcher.cpp
new file mode 100644
index 0000000000..cd68c20be1
--- /dev/null
+++ b/indra/media_plugins/webkit/linux_volume_catcher.cpp
@@ -0,0 +1,1009 @@
+/** 
+ * @file linux_volume_catcher.cpp
+ * @brief A Linux-specific, PulseAudio-specific hack to detect and volume-adjust new audio sources
+ *
+ * @cond
+ * $LicenseInfo:firstyear=2008&license=viewergpl$
+ *
+ * Copyright (c) 2008, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ * @endcond
+ */
+
+#include "llqtwebkit.h"
+
+#include "linden_common.h"
+#include "indra_constants.h" // for indra keyboard codes
+
+#include "llgl.h"
+
+#include "llplugininstance.h"
+#include "llpluginmessage.h"
+#include "llpluginmessageclasses.h"
+#include "media_plugin_base.h"
+
+#if LL_WINDOWS
+#include <direct.h>
+#else
+#include <unistd.h>
+#include <stdlib.h>
+#endif
+
+#if LL_WINDOWS
+	// *NOTE:Mani - This captures the module handle fo rthe dll. This is used below
+	// to get the path to this dll for webkit initialization.
+	// I don't know how/if this can be done with apr...
+	namespace {	HMODULE gModuleHandle;};
+	BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
+	{
+		gModuleHandle = (HMODULE) hinstDLL;
+		return TRUE;
+	}
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+//
+class MediaPluginWebKit : 
+		public MediaPluginBase,
+		public LLEmbeddedBrowserWindowObserver
+{
+public:
+	MediaPluginWebKit(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data);
+	~MediaPluginWebKit();
+
+	/*virtual*/ void receiveMessage(const char *message_string);
+
+private:
+
+	std::string mProfileDir;
+
+	enum
+	{
+		INIT_STATE_UNINITIALIZED,		// Browser instance hasn't been set up yet
+		INIT_STATE_NAVIGATING,			// Browser instance has been set up and initial navigate to about:blank has been issued
+		INIT_STATE_NAVIGATE_COMPLETE,	// initial navigate to about:blank has completed
+		INIT_STATE_WAIT_REDRAW,			// First real navigate begin has been received, waiting for page changed event to start handling redraws
+		INIT_STATE_WAIT_COMPLETE,		// Waiting for first real navigate complete event
+		INIT_STATE_RUNNING				// All initialization gymnastics are complete.
+	};
+	int mBrowserWindowId;
+	int mInitState;
+	std::string mInitialNavigateURL;
+	bool mNeedsUpdate;
+
+	bool	mCanCut;
+	bool	mCanCopy;
+	bool	mCanPaste;
+	int mLastMouseX;
+	int mLastMouseY;
+	bool mFirstFocus;
+	F32 mBackgroundR;
+	F32 mBackgroundG;
+	F32 mBackgroundB;
+	
+	void setInitState(int state)
+	{
+//		std::cerr << "changing init state to " << state << std::endl;
+		mInitState = state;
+	}
+	
+	////////////////////////////////////////////////////////////////////////////////
+	//
+	void update(int milliseconds)
+	{
+		LLQtWebKit::getInstance()->pump( milliseconds );
+		
+		checkEditState();
+		
+		if(mInitState == INIT_STATE_NAVIGATE_COMPLETE)
+		{
+			if(!mInitialNavigateURL.empty())
+			{
+				// We already have the initial navigate URL -- kick off the navigate.
+				LLQtWebKit::getInstance()->navigateTo( mBrowserWindowId, mInitialNavigateURL );
+				mInitialNavigateURL.clear();
+			}
+		}
+		
+		if ( (mInitState > INIT_STATE_WAIT_REDRAW) && mNeedsUpdate )
+		{
+			const unsigned char* browser_pixels = LLQtWebKit::getInstance()->grabBrowserWindow( mBrowserWindowId );
+
+			unsigned int buffer_size = LLQtWebKit::getInstance()->getBrowserRowSpan( mBrowserWindowId ) * LLQtWebKit::getInstance()->getBrowserHeight( mBrowserWindowId );
+			
+//			std::cerr << "webkit plugin: updating" << std::endl;
+			
+			// TODO: should get rid of this memcpy if possible
+			if ( mPixels && browser_pixels )
+			{
+//				std::cerr << "    memcopy of " << buffer_size << " bytes" << std::endl;
+				memcpy( mPixels, browser_pixels, buffer_size );
+			}
+
+			if ( mWidth > 0 && mHeight > 0 )
+			{
+//				std::cerr << "Setting dirty, " << mWidth << " x " << mHeight << std::endl;
+				setDirty( 0, 0, mWidth, mHeight );
+			}
+
+			mNeedsUpdate = false;
+		};
+	};
+
+	////////////////////////////////////////////////////////////////////////////////
+	//
+	bool initBrowser()
+	{
+		// already initialized
+		if ( mInitState > INIT_STATE_UNINITIALIZED )
+			return true;
+
+		// not enough information to initialize the browser yet.
+		if ( mWidth < 0 || mHeight < 0 || mDepth < 0 || 
+				mTextureWidth < 0 || mTextureHeight < 0 )
+		{
+			return false;
+		};
+
+		// set up directories
+		char cwd[ FILENAME_MAX ];	// I *think* this is defined on all platforms we use
+		if (NULL == getcwd( cwd, FILENAME_MAX - 1 ))
+		{
+			llwarns << "Couldn't get cwd - probably too long - failing to init." << llendl;
+			return false;
+		}
+		std::string application_dir = std::string( cwd );
+
+#if LL_DARWIN
+	// When running under the Xcode debugger, there's a setting called "Break on Debugger()/DebugStr()" which defaults to being turned on.
+	// This causes the environment variable USERBREAK to be set to 1, which causes these legacy calls to break into the debugger.
+	// This wouldn't cause any problems except for the fact that the current release version of the Flash plugin has a call to Debugger() in it
+	// which gets hit when the plugin is probed by webkit.
+	// Unsetting the environment variable here works around this issue.
+	unsetenv("USERBREAK");
+#endif
+
+#if LL_WINDOWS
+		//*NOTE:Mani - On windows, at least, the component path is the
+		// location of this dll's image file. 
+		std::string component_dir;
+		char dll_path[_MAX_PATH];
+		DWORD len = GetModuleFileNameA(gModuleHandle, (LPCH)&dll_path, _MAX_PATH);
+		while(len && dll_path[ len ] != ('\\') )
+		{
+			len--;
+		}
+		if(len >= 0)
+		{
+			dll_path[len] = 0;
+			component_dir = dll_path;
+		}
+		else
+		{
+			// *NOTE:Mani - This case should be an rare exception. 
+			// GetModuleFileNameA should always give you a full path, no?
+			component_dir = application_dir;
+		}
+#else
+		std::string component_dir = application_dir;
+#endif
+
+		// window handle - needed on Windows and must be app window.
+#if LL_WINDOWS
+		char window_title[ MAX_PATH ];
+		GetConsoleTitleA( window_title, MAX_PATH );
+		void* native_window_handle = (void*)FindWindowA( NULL, window_title );
+#else
+		void* native_window_handle = 0;
+#endif
+
+		// main browser initialization
+		bool result = LLQtWebKit::getInstance()->init( application_dir, component_dir, mProfileDir, native_window_handle );
+		if ( result )
+		{
+			// create single browser window
+			mBrowserWindowId = LLQtWebKit::getInstance()->createBrowserWindow( mWidth, mHeight );
+#if LL_WINDOWS
+			// Enable plugins
+			LLQtWebKit::getInstance()->enablePlugins(true);
+#elif LL_DARWIN
+			// Enable plugins
+			LLQtWebKit::getInstance()->enablePlugins(true);
+#elif LL_LINUX
+			// Enable plugins
+			LLQtWebKit::getInstance()->enablePlugins(true);
+#endif
+			// Enable cookies
+			LLQtWebKit::getInstance()->enableCookies( true );
+
+			// tell LLQtWebKit about the size of the browser window
+			LLQtWebKit::getInstance()->setSize( mBrowserWindowId, mWidth, mHeight );
+
+			// observer events that LLQtWebKit emits
+			LLQtWebKit::getInstance()->addObserver( mBrowserWindowId, this );
+
+			// append details to agent string
+			LLQtWebKit::getInstance()->setBrowserAgentId( "LLPluginMedia Web Browser" );
+
+			// don't flip bitmap
+			LLQtWebKit::getInstance()->flipWindow( mBrowserWindowId, true );
+			
+			// set background color
+			// convert background color channels from [0.0, 1.0] to [0, 255];
+			LLQtWebKit::getInstance()->setBackgroundColor( mBrowserWindowId, int(mBackgroundR * 255.0f), int(mBackgroundG * 255.0f), int(mBackgroundB * 255.0f) );
+
+			// Set state _before_ starting the navigate, since onNavigateBegin might get called before this call returns.
+			setInitState(INIT_STATE_NAVIGATING);
+
+			// Don't do this here -- it causes the dreaded "white flash" when loading a browser instance.
+			// FIXME: Re-added this because navigating to a "page" initializes things correctly - especially
+			// for the HTTP AUTH dialog issues (DEV-41731). Will fix at a later date.
+			// Build a data URL like this: "data:text/html,%3Chtml%3E%3Cbody bgcolor=%22#RRGGBB%22%3E%3C/body%3E%3C/html%3E"
+			// where RRGGBB is the background color in HTML style
+			std::stringstream url;
+			
+			url << "data:text/html,%3Chtml%3E%3Cbody%20bgcolor=%22#";
+			// convert background color channels from [0.0, 1.0] to [0, 255];
+			url << std::setfill('0') << std::setw(2) << std::hex << int(mBackgroundR * 255.0f);
+			url << std::setfill('0') << std::setw(2) << std::hex << int(mBackgroundG * 255.0f);
+			url << std::setfill('0') << std::setw(2) << std::hex << int(mBackgroundB * 255.0f);
+			url << "%22%3E%3C/body%3E%3C/html%3E";
+			
+			lldebugs << "data url is: " << url.str() << llendl;
+						
+			LLQtWebKit::getInstance()->navigateTo( mBrowserWindowId, url.str() );
+//			LLQtWebKit::getInstance()->navigateTo( mBrowserWindowId, "about:blank" );
+
+			return true;
+		};
+
+		return false;
+	};
+
+
+	////////////////////////////////////////////////////////////////////////////////
+	// virtual
+	void onCursorChanged(const EventType& event)
+	{
+		LLQtWebKit::ECursor llqt_cursor = (LLQtWebKit::ECursor)event.getIntValue();
+		std::string name;
+
+		switch(llqt_cursor)
+		{
+			case LLQtWebKit::C_ARROW:
+				name = "arrow";
+			break;
+			case LLQtWebKit::C_IBEAM:
+				name = "ibeam";
+			break;
+			case LLQtWebKit::C_SPLITV:
+				name = "splitv";
+			break;
+			case LLQtWebKit::C_SPLITH:
+				name = "splith";
+			break;
+			case LLQtWebKit::C_POINTINGHAND:
+				name = "hand";
+			break;
+			
+			default:
+				llwarns << "Unknown cursor ID: " << (int)llqt_cursor << llendl;
+			break;
+		}
+		
+		LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "cursor_changed");
+		message.setValue("name", name);
+		sendMessage(message);
+	}
+
+	////////////////////////////////////////////////////////////////////////////////
+	// virtual
+	void onPageChanged( const EventType& event )
+	{
+		if(mInitState == INIT_STATE_WAIT_REDRAW)
+		{
+			setInitState(INIT_STATE_WAIT_COMPLETE);
+		}
+		
+		// flag that an update is required
+		mNeedsUpdate = true;
+	};
+
+	////////////////////////////////////////////////////////////////////////////////
+	// virtual
+	void onNavigateBegin(const EventType& event)
+	{
+		if(mInitState >= INIT_STATE_NAVIGATE_COMPLETE)
+		{
+			LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "navigate_begin");
+			message.setValue("uri", event.getEventUri());
+			sendMessage(message);
+		
+			setStatus(STATUS_LOADING);
+		}
+
+		if(mInitState == INIT_STATE_NAVIGATE_COMPLETE)
+		{
+			// Skip the WAIT_REDRAW state now -- with the right background color set, it should no longer be necessary.
+//			setInitState(INIT_STATE_WAIT_REDRAW);
+			setInitState(INIT_STATE_WAIT_COMPLETE);
+		}
+		
+	}
+
+	////////////////////////////////////////////////////////////////////////////////
+	// virtual
+	void onNavigateComplete(const EventType& event)
+	{
+		if(mInitState >= INIT_STATE_NAVIGATE_COMPLETE)
+		{
+			if(mInitState < INIT_STATE_RUNNING)
+			{
+				setInitState(INIT_STATE_RUNNING);
+				
+				// Clear the history, so the "back" button doesn't take you back to "about:blank".
+				LLQtWebKit::getInstance()->clearHistory(mBrowserWindowId);
+			}
+			
+			LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "navigate_complete");
+			message.setValue("uri", event.getEventUri());
+			message.setValueS32("result_code", event.getIntValue());
+			message.setValue("result_string", event.getStringValue());
+			message.setValueBoolean("history_back_available", LLQtWebKit::getInstance()->userActionIsEnabled( mBrowserWindowId, LLQtWebKit::UA_NAVIGATE_BACK));
+			message.setValueBoolean("history_forward_available", LLQtWebKit::getInstance()->userActionIsEnabled( mBrowserWindowId, LLQtWebKit::UA_NAVIGATE_FORWARD));
+			sendMessage(message);
+			
+			setStatus(STATUS_LOADED);
+		}
+		else if(mInitState == INIT_STATE_NAVIGATING)
+		{
+			setInitState(INIT_STATE_NAVIGATE_COMPLETE);
+		}
+
+	}
+
+	////////////////////////////////////////////////////////////////////////////////
+	// virtual
+	void onUpdateProgress(const EventType& event)
+	{
+		if(mInitState >= INIT_STATE_NAVIGATE_COMPLETE)
+		{
+			LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "progress");
+			message.setValueS32("percent", event.getIntValue());
+			sendMessage(message);
+		}
+	}
+	
+	////////////////////////////////////////////////////////////////////////////////
+	// virtual
+	void onStatusTextChange(const EventType& event)
+	{
+		if(mInitState >= INIT_STATE_NAVIGATE_COMPLETE)
+		{
+			LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "status_text");
+			message.setValue("status", event.getStringValue());
+			sendMessage(message);
+		}
+	}
+
+	////////////////////////////////////////////////////////////////////////////////
+	// virtual
+	void onTitleChange(const EventType& event)
+	{
+		if(mInitState >= INIT_STATE_NAVIGATE_COMPLETE)
+		{
+			LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "name_text");
+			message.setValue("name", event.getStringValue());
+			sendMessage(message);
+		}
+	}
+
+	////////////////////////////////////////////////////////////////////////////////
+	// virtual
+	void onLocationChange(const EventType& event)
+	{
+		if(mInitState >= INIT_STATE_NAVIGATE_COMPLETE)
+		{
+			LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "location_changed");
+			message.setValue("uri", event.getEventUri());
+			sendMessage(message);
+		}
+	}
+	
+	////////////////////////////////////////////////////////////////////////////////
+	// virtual
+	void onClickLinkHref(const EventType& event)
+	{
+		LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "click_href");
+		message.setValue("uri", event.getStringValue());
+		message.setValue("target", event.getStringValue2());
+		message.setValueU32("target_type", event.getLinkType());
+		sendMessage(message);
+	}
+	
+	////////////////////////////////////////////////////////////////////////////////
+	// virtual
+	void onClickLinkNoFollow(const EventType& event)
+	{
+		LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER, "click_nofollow");
+		message.setValue("uri", event.getStringValue());
+		sendMessage(message);
+	}
+	
+	LLQtWebKit::EKeyboardModifier decodeModifiers(std::string &modifiers)
+	{
+		int result = 0;
+		
+		if(modifiers.find("shift") != std::string::npos)
+			result |= LLQtWebKit::KM_MODIFIER_SHIFT;
+
+		if(modifiers.find("alt") != std::string::npos)
+			result |= LLQtWebKit::KM_MODIFIER_ALT;
+		
+		if(modifiers.find("control") != std::string::npos)
+			result |= LLQtWebKit::KM_MODIFIER_CONTROL;
+		
+		if(modifiers.find("meta") != std::string::npos)
+			result |= LLQtWebKit::KM_MODIFIER_META;
+		
+		return (LLQtWebKit::EKeyboardModifier)result;
+	}
+	
+	////////////////////////////////////////////////////////////////////////////////
+	//
+	void 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
+#elif LL_LINUX
+			native_scan_code = (uint32_t)(native_key_data["scan_code"].asInteger());
+			native_virtual_key = (uint32_t)(native_key_data["virtual_key"].asInteger());
+			native_modifiers = (uint32_t)(native_key_data["modifiers"].asInteger());
+#else
+			// Add other platforms here as needed
+#endif
+		};
+	};
+
+	////////////////////////////////////////////////////////////////////////////////
+	//
+	void keyEvent(LLQtWebKit::EKeyEvent key_event, int key, LLQtWebKit::EKeyboardModifier modifiers, LLSD native_key_data = LLSD::emptyMap())
+	{
+		// The incoming values for 'key' will be the ones from indra_constants.h
+		std::string utf8_text;
+		
+		if(key < KEY_SPECIAL)
+		{
+			// Low-ascii characters need to get passed through.
+			utf8_text = (char)key;
+		}
+		
+		// Any special-case handling we want to do for particular keys...
+		switch((KEY)key)
+		{
+			// ASCII codes for some standard keys
+			case LLQtWebKit::KEY_BACKSPACE:		utf8_text = (char)8;		break;
+			case LLQtWebKit::KEY_TAB:			utf8_text = (char)9;		break;
+			case LLQtWebKit::KEY_RETURN:		utf8_text = (char)13;		break;
+			case LLQtWebKit::KEY_PAD_RETURN:	utf8_text = (char)13;		break;
+			case LLQtWebKit::KEY_ESCAPE:		utf8_text = (char)27;		break;
+			
+			default:  
+			break;
+		}
+		
+//		std::cerr << "key event " << (int)key_event << ", native_key_data = " << native_key_data << std::endl;
+		
+		uint32_t native_scan_code = 0;
+		uint32_t native_virtual_key = 0;
+		uint32_t native_modifiers = 0;
+		deserializeKeyboardData( native_key_data, native_scan_code, native_virtual_key, native_modifiers );
+		
+		LLQtWebKit::getInstance()->keyboardEvent( mBrowserWindowId, key_event, (uint32_t)key, utf8_text.c_str(), modifiers, native_scan_code, native_virtual_key, native_modifiers);
+
+		checkEditState();
+	};
+
+	////////////////////////////////////////////////////////////////////////////////
+	//
+	void unicodeInput( const std::string &utf8str, LLQtWebKit::EKeyboardModifier modifiers, LLSD native_key_data = LLSD::emptyMap())
+	{		
+		uint32_t key = LLQtWebKit::KEY_NONE;
+		
+//		std::cerr << "unicode input, native_key_data = " << native_key_data << std::endl;
+		
+		if(utf8str.size() == 1)
+		{
+			// The only way a utf8 string can be one byte long is if it's actually a single 7-bit ascii character.
+			// In this case, use it as the key value.
+			key = utf8str[0];
+		}
+
+		uint32_t native_scan_code = 0;
+		uint32_t native_virtual_key = 0;
+		uint32_t native_modifiers = 0;
+		deserializeKeyboardData( native_key_data, native_scan_code, native_virtual_key, native_modifiers );
+		
+		LLQtWebKit::getInstance()->keyboardEvent( mBrowserWindowId, LLQtWebKit::KE_KEY_DOWN, (uint32_t)key, utf8str.c_str(), modifiers, native_scan_code, native_virtual_key, native_modifiers);
+		LLQtWebKit::getInstance()->keyboardEvent( mBrowserWindowId, LLQtWebKit::KE_KEY_UP, (uint32_t)key, utf8str.c_str(), modifiers, native_scan_code, native_virtual_key, native_modifiers);
+
+		checkEditState();
+	};
+	
+	void checkEditState(void)
+	{
+		bool can_cut = LLQtWebKit::getInstance()->userActionIsEnabled( mBrowserWindowId, LLQtWebKit::UA_EDIT_CUT);
+		bool can_copy = LLQtWebKit::getInstance()->userActionIsEnabled( mBrowserWindowId, LLQtWebKit::UA_EDIT_COPY);
+		bool can_paste = LLQtWebKit::getInstance()->userActionIsEnabled( mBrowserWindowId, LLQtWebKit::UA_EDIT_PASTE);
+					
+		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);
+			
+		}
+	}
+
+};
+
+MediaPluginWebKit::MediaPluginWebKit(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data) :
+	MediaPluginBase(host_send_func, host_user_data)
+{
+//	std::cerr << "MediaPluginWebKit constructor" << std::endl;
+
+	mBrowserWindowId = 0;
+	mInitState = INIT_STATE_UNINITIALIZED;
+	mNeedsUpdate = true;
+	mCanCut = false;
+	mCanCopy = false;
+	mCanPaste = false;
+	mLastMouseX = 0;
+	mLastMouseY = 0;
+	mFirstFocus = true;
+	mBackgroundR = 0.0f;
+	mBackgroundG = 0.0f;
+	mBackgroundB = 0.0f;
+}
+
+MediaPluginWebKit::~MediaPluginWebKit()
+{
+	// unhook observer
+	LLQtWebKit::getInstance()->remObserver( mBrowserWindowId, this );
+
+	// clean up
+	LLQtWebKit::getInstance()->reset();
+
+//	std::cerr << "MediaPluginWebKit destructor" << std::endl;
+}
+
+void MediaPluginWebKit::receiveMessage(const char *message_string)
+{
+//	std::cerr << "MediaPluginWebKit::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")
+			{
+				std::string user_data_path = message_in.getValue("user_data_path"); // n.b. always has trailing platform-specific dir-delimiter
+				mProfileDir = user_data_path + "browser_profile";
+
+				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 = "Webkit media plugin, Webkit version ";
+				plugin_version += LLQtWebKit::getInstance()->getVersion();
+				message.setValue("plugin_version", plugin_version);
+				sendMessage(message);
+				
+				// Plugin gets to decide the texture parameters to use.
+				mDepth = 4;
+
+				message.setMessage(LLPLUGIN_MESSAGE_CLASS_MEDIA, "texture_params");
+				message.setValueS32("default_width", 1024);
+				message.setValueS32("default_height", 1024);
+				message.setValueS32("depth", mDepth);
+				message.setValueU32("internalformat", GL_RGBA);
+				message.setValueU32("format", GL_RGBA);
+				message.setValueU32("type", GL_UNSIGNED_BYTE);
+				message.setValueBoolean("coords_opengl", true);
+				sendMessage(message);
+			}
+			else if(message_name == "idle")
+			{
+				// no response is necessary here.
+				F64 time = message_in.getValueReal("time");
+				
+				// Convert time to milliseconds for update()
+				update((int)(time * 1000.0f));
+			}
+			else if(message_name == "cleanup")
+			{
+				// DTOR most likely won't be called but the recent change to the way this process
+				// is (not) killed means we see this message and can do what we need to here.
+				// Note: this cleanup is ultimately what writes cookies to the disk
+				LLQtWebKit::getInstance()->remObserver( mBrowserWindowId, this );
+				LLQtWebKit::getInstance()->reset();
+			}
+			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");
+				
+//				std::cerr << "MediaPluginWebKit::receiveMessage: shared memory added, name: " << name 
+//					<< ", size: " << info.mSize 
+//					<< ", address: " << info.mAddress 
+//					<< std::endl;
+
+				mSharedSegments.insert(SharedSegmentMap::value_type(name, info));
+			
+			}
+			else if(message_name == "shm_remove")
+			{
+				std::string name = message_in.getValue("name");
+				
+//				std::cerr << "MediaPluginWebKit::receiveMessage: shared memory remove, name = " << name << std::endl;
+
+				SharedSegmentMap::iterator iter = mSharedSegments.find(name);
+				if(iter != mSharedSegments.end())
+				{
+					if(mPixels == iter->second.mAddress)
+					{
+						// This is the currently active pixel buffer.  Make sure we stop drawing to it.
+						mPixels = NULL;
+						mTextureSegmentName.clear();
+					}
+					mSharedSegments.erase(iter);
+				}
+				else
+				{
+//					std::cerr << "MediaPluginWebKit::receiveMessage: unknown shared memory region!" << std::endl;
+				}
+
+				// Send the response so it can be cleaned up.
+				LLPluginMessage message("base", "shm_remove_response");
+				message.setValue("name", name);
+				sendMessage(message);
+			}
+			else
+			{
+//				std::cerr << "MediaPluginWebKit::receiveMessage: unknown base message: " << message_name << std::endl;
+			}
+		}
+		else if(message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA)
+		{
+			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");
+				mBackgroundR = message_in.getValueReal("background_r");
+				mBackgroundG = message_in.getValueReal("background_g");
+				mBackgroundB = message_in.getValueReal("background_b");
+//				mBackgroundA = message_in.setValueReal("background_a");		// Ignore any alpha
+								
+				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;
+
+						// initialize (only gets called once)
+						initBrowser();
+
+						// size changed so tell the browser
+						LLQtWebKit::getInstance()->setSize( mBrowserWindowId, mWidth, mHeight );
+						
+//						std::cerr << "webkit plugin: set size to " << mWidth << " x " << mHeight 
+//								<< ", rowspan is " << LLQtWebKit::getInstance()->getBrowserRowSpan(mBrowserWindowId) << std::endl;
+								
+						S32 real_width = LLQtWebKit::getInstance()->getBrowserRowSpan(mBrowserWindowId) / LLQtWebKit::getInstance()->getBrowserDepth(mBrowserWindowId); 
+						
+						// The actual width the browser will be drawing to is probably smaller... let the host know by modifying texture_width in the response.
+						if(real_width <= texture_width)
+						{
+							texture_width = real_width;
+						}
+						else
+						{
+							// This won't work -- it'll be bigger than the allocated memory.  This is a fatal error.
+//							std::cerr << "Fatal error: browser rowbytes greater than texture width" << std::endl;
+							mDeleteMe = true;
+							return;
+						}
+						
+						mTextureWidth = texture_width;
+						mTextureHeight = texture_height;
+						
+					};
+				};
+
+				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 == "load_uri")
+			{
+				std::string uri = message_in.getValue("uri");
+
+//				std::cout << "loading URI: " << uri << std::endl;
+				
+				if(!uri.empty())
+				{
+					if(mInitState >= INIT_STATE_NAVIGATE_COMPLETE)
+					{
+						LLQtWebKit::getInstance()->navigateTo( mBrowserWindowId, uri );
+					}
+					else
+					{
+						mInitialNavigateURL = uri;
+					}
+				}
+			}
+			else if(message_name == "mouse_event")
+			{
+				std::string event = message_in.getValue("event");
+				S32 button = message_in.getValueS32("button");
+				mLastMouseX = message_in.getValueS32("x");
+				mLastMouseY = message_in.getValueS32("y");
+				std::string modifiers = message_in.getValue("modifiers");
+				
+				// Treat unknown mouse events as mouse-moves.
+				LLQtWebKit::EMouseEvent mouse_event = LLQtWebKit::ME_MOUSE_MOVE;
+				if(event == "down")
+				{
+					mouse_event = LLQtWebKit::ME_MOUSE_DOWN;
+				}
+				else if(event == "up")
+				{
+					mouse_event = LLQtWebKit::ME_MOUSE_UP;
+				}
+				else if(event == "double_click")
+				{
+					mouse_event = LLQtWebKit::ME_MOUSE_DOUBLE_CLICK;
+				}
+				
+				LLQtWebKit::getInstance()->mouseEvent( mBrowserWindowId, mouse_event, button, mLastMouseX, mLastMouseY, decodeModifiers(modifiers));
+				checkEditState();
+			}
+			else if(message_name == "scroll_event")
+			{
+				S32 x = message_in.getValueS32("x");
+				S32 y = message_in.getValueS32("y");
+				std::string modifiers = message_in.getValue("modifiers");
+				
+				// Incoming scroll events are adjusted so that 1 detent is approximately 1 unit.
+				// Qt expects 1 detent to be 120 units.
+				// It also seems that our y scroll direction is inverted vs. what Qt expects.
+				
+				x *= 120;
+				y *= -120;
+				
+				LLQtWebKit::getInstance()->scrollWheelEvent(mBrowserWindowId, mLastMouseX, mLastMouseY, x, y, decodeModifiers(modifiers));
+			}
+			else if(message_name == "key_event")
+			{
+				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.
+				LLQtWebKit::EKeyEvent key_event = LLQtWebKit::KE_KEY_UP;
+				if(event == "down")
+				{
+					key_event = LLQtWebKit::KE_KEY_DOWN;
+				}
+				else if(event == "repeat")
+				{
+					key_event = LLQtWebKit::KE_KEY_REPEAT;
+				}
+				
+				keyEvent(key_event, key, decodeModifiers(modifiers), native_key_data);
+			}
+			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);
+			}
+			if(message_name == "edit_cut")
+			{
+				LLQtWebKit::getInstance()->userAction( mBrowserWindowId, LLQtWebKit::UA_EDIT_CUT );
+				checkEditState();
+			}
+			if(message_name == "edit_copy")
+			{
+				LLQtWebKit::getInstance()->userAction( mBrowserWindowId, LLQtWebKit::UA_EDIT_COPY );
+				checkEditState();
+			}
+			if(message_name == "edit_paste")
+			{
+				LLQtWebKit::getInstance()->userAction( mBrowserWindowId, LLQtWebKit::UA_EDIT_PASTE );
+				checkEditState();
+			}
+			else
+			{
+//				std::cerr << "MediaPluginWebKit::receiveMessage: unknown media message: " << message_string << std::endl;
+			};
+		}
+		else if(message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER)
+		{
+			if(message_name == "focus")
+			{
+				bool val = message_in.getValueBoolean("focused");
+				LLQtWebKit::getInstance()->focusBrowser( mBrowserWindowId, val );
+				
+				if(mFirstFocus && val)
+				{
+					// On the first focus, post a tab key event.  This fixes a problem with initial focus.
+					std::string empty;
+					keyEvent(LLQtWebKit::KE_KEY_DOWN, KEY_TAB, decodeModifiers(empty));
+					keyEvent(LLQtWebKit::KE_KEY_UP, KEY_TAB, decodeModifiers(empty));
+					mFirstFocus = false;
+				}
+			}
+			else if(message_name == "clear_cache")
+			{
+				LLQtWebKit::getInstance()->clearCache();
+			}
+			else if(message_name == "clear_cookies")
+			{
+				LLQtWebKit::getInstance()->clearAllCookies();
+			}
+			else if(message_name == "enable_cookies")
+			{
+				bool val = message_in.getValueBoolean("enable");
+				LLQtWebKit::getInstance()->enableCookies( val );
+			}
+			else if(message_name == "proxy_setup")
+			{
+				bool val = message_in.getValueBoolean("enable");
+				std::string host = message_in.getValue("host");
+				int port = message_in.getValueS32("port");
+				LLQtWebKit::getInstance()->enableProxy( val, host, port );
+			}
+			else if(message_name == "browse_stop")
+			{
+				LLQtWebKit::getInstance()->userAction( mBrowserWindowId, LLQtWebKit::UA_NAVIGATE_STOP );
+			}
+			else if(message_name == "browse_reload")
+			{
+				// foo = message_in.getValueBoolean("ignore_cache");
+				LLQtWebKit::getInstance()->userAction( mBrowserWindowId, LLQtWebKit::UA_NAVIGATE_RELOAD );
+			}
+			else if(message_name == "browse_forward")
+			{
+				LLQtWebKit::getInstance()->userAction( mBrowserWindowId, LLQtWebKit::UA_NAVIGATE_FORWARD );
+			}
+			else if(message_name == "browse_back")
+			{
+				LLQtWebKit::getInstance()->userAction( mBrowserWindowId, LLQtWebKit::UA_NAVIGATE_BACK );
+			}
+			else if(message_name == "set_status_redirect")
+			{
+				int code = message_in.getValueS32("code");
+				std::string url = message_in.getValue("url");
+				if ( 404 == code )	// browser lib only supports 404 right now
+				{
+					LLQtWebKit::getInstance()->set404RedirectUrl( mBrowserWindowId, url );
+				};
+			}
+			else if(message_name == "set_user_agent")
+			{
+				std::string user_agent = message_in.getValue("user_agent");
+				LLQtWebKit::getInstance()->setBrowserAgentId( user_agent );
+			}
+			else if(message_name == "init_history")
+			{
+				// Initialize browser history
+				LLSD history = message_in.getValueLLSD("history");
+				// First, clear the URL history
+				LLQtWebKit::getInstance()->clearHistory(mBrowserWindowId);
+				// Then, add the history items in order
+				LLSD::array_iterator iter_history = history.beginArray();
+				LLSD::array_iterator end_history = history.endArray();
+				for(; iter_history != end_history; ++iter_history)
+				{
+					std::string url = (*iter_history).asString();
+					if(! url.empty()) {
+						LLQtWebKit::getInstance()->prependHistoryUrl(mBrowserWindowId, url);
+					}
+				}
+			}
+			else
+			{
+//				std::cerr << "MediaPluginWebKit::receiveMessage: unknown media_browser message: " << message_string << std::endl;
+			};
+		}
+		else
+		{
+//			std::cerr << "MediaPluginWebKit::receiveMessage: unknown message class: " << message_class << std::endl;
+		};
+	}
+}
+
+int init_media_plugin(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data)
+{
+	MediaPluginWebKit *self = new MediaPluginWebKit(host_send_func, host_user_data);
+	*plugin_send_func = MediaPluginWebKit::staticReceiveMessage;
+	*plugin_user_data = (void*)self;
+
+	return 0;
+}
+