C++ LLPluginMessage::getClass方法代码示例

// This function is called when a new message is received from the plugin.
// We get here when calling mPluginManager->update() in the first line of
// AIFilePicker::multiplex_impl.
//
// Note that we can't call finish() or abort() directly in this function,
// as that deletes mPluginManager and we're using the plugin manager
// right now (to receive this message)!
void AIFilePicker::receivePluginMessage(const LLPluginMessage &message)
{
	std::string message_class = message.getClass();

	if (message_class == LLPLUGIN_MESSAGE_CLASS_BASIC)
	{
		std::string message_name = message.getName();
		if (message_name == "canceled")
		{
			LL_DEBUGS("Plugin") << "received message \"canceled\"" << LL_ENDL;
			set_state(AIFilePicker_canceled);
		}
		else if (message_name == "done")
		{
			LL_DEBUGS("Plugin") << "received message \"done\"" << LL_ENDL;
			LLSD filenames = message.getValueLLSD("filenames");
			mFilenames.clear();
			for(LLSD::array_iterator filename = filenames.beginArray(); filename != filenames.endArray(); ++filename)
			{
				mFilenames.push_back(*filename);
			}
			set_state(AIFilePicker_done);
		}
		else
		{
			LL_WARNS("Plugin") << "Unknown " << message_class << " class message: " << message_name << LL_ENDL;
		}
	}
}

void LLPluginProcessParent::receiveMessageEarly(const LLPluginMessage &message)
{
    // NOTE: this function will be called from the polling thread.  It will be called with mIncomingQueueMutex _already locked_.

    bool handled = false;

    std::string message_class = message.getClass();
    if(message_class == LLPLUGIN_MESSAGE_CLASS_INTERNAL)
    {
        // no internal messages need to be handled early.
    }
    else
    {
        // Call out to the owner and see if they to reply
        // TODO: Should this only happen when blocked?
        if(mOwner != NULL)
        {
            handled = mOwner->receivePluginMessageEarly(message);
        }
    }

    if(!handled)
    {
        // any message that wasn't handled early needs to be queued.
        mIncomingQueue.push(message);
    }
}

/* virtual */ 
void LLPluginClassBasic::receivePluginMessage(const LLPluginMessage &message)
{
	std::string message_class = message.getClass();

	if (message_class == LLPLUGIN_MESSAGE_CLASS_BASIC)
	{
		std::string message_name = message.getName();

		// This class hasn't defined any incoming messages yet.
//		if (message_name == "message_name")
//		{
//		}
//		else 
		{
			LL_WARNS("Plugin") << "Unknown " << message_class << " class message: " << message_name << LL_ENDL;
		}
	}
}

/* virtual */
void LLPluginProcessChild::receivePluginMessage(const std::string &message)
{
	LL_DEBUGS("Plugin") << "Received from plugin: " << message << LL_ENDL;
	
	if(mBlockingRequest)
	{
		// 
		LL_ERRS("Plugin") << "Can't send a message while already waiting on a blocking request -- aborting!" << LL_ENDL;
	}
	
	// Incoming message from the plugin instance
	bool passMessage = true;

	// FIXME: how should we handle queueing here?
	
	// Intercept certain base messages (responses to ones sent by this class)
	{
		// Decode this message
		LLPluginMessage parsed;
		parsed.parse(message);
		
		if(parsed.hasValue("blocking_request"))
		{
			mBlockingRequest = true;
		}

		std::string message_class = parsed.getClass();
		if(message_class == "base")
		{
			std::string message_name = parsed.getName();
			if(message_name == "init_response")
			{
				// The plugin has finished initializing.
				setState(STATE_RUNNING);

				// Don't pass this message up to the parent
				passMessage = false;
				
				LLPluginMessage new_message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "load_plugin_response");
				LLSD versions = parsed.getValueLLSD("versions");
				new_message.setValueLLSD("versions", versions);
				
				if(parsed.hasValue("plugin_version"))
				{
					std::string plugin_version = parsed.getValue("plugin_version");
					new_message.setValueLLSD("plugin_version", plugin_version);
				}

				// Let the parent know it's loaded and initialized.
				sendMessageToParent(new_message);
			}
			else if(message_name == "shm_remove_response")
			{
				// Don't pass this message up to the parent
				passMessage = false;

				std::string name = parsed.getValue("name");
				sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name);				
				if(iter != mSharedMemoryRegions.end())
				{
					// detach the shared memory region
					iter->second->detach();
					
					// and remove it from our map
					mSharedMemoryRegions.erase(iter);
					
					// Finally, send the response to the parent.
					LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_remove_response");
					message.setValue("name", name);
					sendMessageToParent(message);
				}
				else
				{
					LL_WARNS("Plugin") << "shm_remove_response for unknown memory segment!" << LL_ENDL;
				}
			}
		}
		else if (message_class == LLPLUGIN_MESSAGE_CLASS_INTERNAL)
		{
			bool flush = false;
			std::string message_name = parsed.getName();
			if(message_name == "shutdown")
			{
				// The plugin is finished.
				setState(STATE_UNLOADING);
				flush = true;
			}
			else if (message_name == "flush")
			{
				flush = true;
				passMessage = false;
			}
			if (flush)
			{
				flushMessages();
			}
		}
	}
	
//.........这里部分代码省略.........

// This is the SLPlugin process (the child process).
// This is not part of a DSO.
//
// This function is called when the serialized message 'message' was received from the viewer.
// It parses the message and handles LLPLUGIN_MESSAGE_CLASS_INTERNAL.
// Other message classes are passed on to LLPluginInstance::sendMessage.
void LLPluginProcessChild::receiveMessageRaw(const std::string &message)
{
	// Incoming message from the TCP Socket

	LL_DEBUGS("Plugin") << "Received from parent: " << message << LL_ENDL;

	// Decode this message
	LLPluginMessage parsed;
	parsed.parse(message);

	if(mBlockingRequest)
	{
		// We're blocking the plugin waiting for a response.

		if(parsed.hasValue("blocking_response"))
		{
			// This is the message we've been waiting for -- fall through and send it immediately. 
			mBlockingResponseReceived = true;
		}
		else
		{
			// Still waiting.  Queue this message and don't process it yet.
			mMessageQueue.push(message);
			return;
		}
	}
	
	bool passMessage = true;
	
	// FIXME: how should we handle queueing here?
	
	{
		std::string message_class = parsed.getClass();
		if(message_class == LLPLUGIN_MESSAGE_CLASS_INTERNAL)
		{
			passMessage = false;
			
			std::string message_name = parsed.getName();
			if(message_name == "load_plugin")
			{
				mPluginFile = parsed.getValue("file");
				mPluginDir = parsed.getValue("dir");
			}
			else if(message_name == "shm_add")
			{
				std::string name = parsed.getValue("name");
				size_t size = (size_t)parsed.getValueS32("size");
				
				sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name);
				if(iter != mSharedMemoryRegions.end())
				{
					// Need to remove the old region first
					LL_WARNS("Plugin") << "Adding a duplicate shared memory segment!" << LL_ENDL;
				}
				else
				{
					// This is a new region
					LLPluginSharedMemory *region = new LLPluginSharedMemory;
					if(region->attach(name, size))
					{
						mSharedMemoryRegions.insert(sharedMemoryRegionsType::value_type(name, region));
						
						std::stringstream addr;
						addr << region->getMappedAddress();
						
						// Send the add notification to the plugin
						LLPluginMessage message("base", "shm_added");
						message.setValue("name", name);
						message.setValueS32("size", (S32)size);
						message.setValuePointer("address", region->getMappedAddress());
						sendMessageToPlugin(message);
						
						// and send the response to the parent
						message.setMessage(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_add_response");
						message.setValue("name", name);
						sendMessageToParent(message);
					}
					else
					{
						LL_WARNS("Plugin") << "Couldn't create a shared memory segment!" << LL_ENDL;
						delete region;
					}
				}
				
			}
			else if(message_name == "shm_remove")
			{
				std::string name = parsed.getValue("name");
				sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name);
				if(iter != mSharedMemoryRegions.end())
				{
					// forward the remove request to the plugin -- its response will trigger us to detach the segment.
					LLPluginMessage message("base", "shm_remove");
					message.setValue("name", name);
//.........这里部分代码省略.........

// This is the viewer process (the parent process).
//
// This function is called for messages that have to
// be written to the plugin.
// Note that LLPLUGIN_MESSAGE_CLASS_INTERNAL messages
// are not sent to the plugin, but are handled here.
void LLPluginProcessParent::receiveMessage(const LLPluginMessage &message)
{
    std::string message_class = message.getClass();
    if(message_class == LLPLUGIN_MESSAGE_CLASS_INTERNAL)
    {
        // internal messages should be handled here
        std::string message_name = message.getName();
        if(message_name == "hello")
        {
            if(mState == STATE_CONNECTED)
            {
                // Plugin host has launched.  Tell it which plugin to load.
                setState(STATE_HELLO);
            }
            else
            {
                LL_WARNS("Plugin") << "received hello message in wrong state -- bailing out" << LL_ENDL;
                errorState();
            }

        }
        else if(message_name == "load_plugin_response")
        {
            if(mState == STATE_LOADING)
            {
                // Plugin has been loaded.

                mPluginVersionString = message.getValue("plugin_version");
                LL_INFOS("Plugin") << "plugin version string: " << mPluginVersionString << LL_ENDL;

                // Check which message classes/versions the plugin supports.
                // TODO: check against current versions
                // TODO: kill plugin on major mismatches?
                mMessageClassVersions = message.getValueLLSD("versions");
                LLSD::map_iterator iter;
                for(iter = mMessageClassVersions.beginMap(); iter != mMessageClassVersions.endMap(); iter++)
                {
                    LL_INFOS("Plugin") << "message class: " << iter->first << " -> version: " << iter->second.asString() << LL_ENDL;
                }

                // Send initial sleep time
                setSleepTime(mSleepTime, true);

                setState(STATE_RUNNING);
            }
            else
            {
                LL_WARNS("Plugin") << "received load_plugin_response message in wrong state -- bailing out" << LL_ENDL;
                errorState();
            }
        }
        else if(message_name == "heartbeat")
        {
            // this resets our timer.
            mHeartbeat.setTimerExpirySec(mPluginLockupTimeout);

            mCPUUsage = message.getValueReal("cpu_usage");

            LL_DEBUGS("PluginHeartbeat") << "cpu usage reported as " << mCPUUsage << LL_ENDL;
        }
        else if(message_name == "shutdown")
        {
            LL_INFOS("Plugin") << "received shutdown message" << LL_ENDL;
            mReceivedShutdown = true;
            mOwner->receivedShutdown();
        }
        else if(message_name == "shm_add_response")
        {
            // Nothing to do here.
        }
        else if(message_name == "shm_remove_response")
        {
            std::string name = message.getValue("name");
            sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name);

            if(iter != mSharedMemoryRegions.end())
            {
                // destroy the shared memory region
                iter->second->destroy();

                // and remove it from our map
                mSharedMemoryRegions.erase(iter);
            }
        }
        else if(message_name == "log_message")
        {
            std::string msg=message.getValue("message");
            S32 level=message.getValueS32("log_level");

            switch(level)
            {
            case LLPluginMessage::LOG_LEVEL_DEBUG:
                LL_DEBUGS("Plugin child")<<msg<<LL_ENDL;
                break;
//.........这里部分代码省略.........

/* virtual */ 
void LLPluginClassMedia::receivePluginMessage(const LLPluginMessage &message)
{
	std::string message_class = message.getClass();
	
	if (message_class == LLPLUGIN_MESSAGE_CLASS_BASIC)
	{
		LLPluginClassBasic::receivePluginMessage(message);
	}
	else if(message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA)
	{
		std::string message_name = message.getName();
		if(message_name == "texture_params")
		{
			mRequestedTextureDepth = message.getValueS32("depth");
			mRequestedTextureInternalFormat = message.getValueU32("internalformat");
			mRequestedTextureFormat = message.getValueU32("format");
			mRequestedTextureType = message.getValueU32("type");
			mRequestedTextureSwapBytes = message.getValueBoolean("swap_bytes");
			mRequestedTextureCoordsOpenGL = message.getValueBoolean("coords_opengl");			
			
			// These two are optional, and will default to 0 if they're not specified.
			mDefaultMediaWidth = message.getValueS32("default_width");
			mDefaultMediaHeight = message.getValueS32("default_height");
			
			mAllowDownsample = message.getValueBoolean("allow_downsample");
			mPadding = message.getValueS32("padding");

			setSizeInternal();
			
			mTextureParamsReceived = true;
		}
		else if(message_name == "updated")
		{			
			if(message.hasValue("left"))
			{
				LLRect newDirtyRect;
				newDirtyRect.mLeft = message.getValueS32("left");
				newDirtyRect.mTop = message.getValueS32("top");
				newDirtyRect.mRight = message.getValueS32("right");
				newDirtyRect.mBottom = message.getValueS32("bottom");
							
				// The plugin is likely to have top and bottom switched, due to vertical flip and OpenGL coordinate confusion.
				// If they're backwards, swap them.
				if(newDirtyRect.mTop < newDirtyRect.mBottom)
				{
					S32 temp = newDirtyRect.mTop;
					newDirtyRect.mTop = newDirtyRect.mBottom;
					newDirtyRect.mBottom = temp;
				}
				
				if(mDirtyRect.isEmpty())
				{
					mDirtyRect = newDirtyRect;
				}
				else
				{
					mDirtyRect.unionWith(newDirtyRect);
				}

				LL_DEBUGS("PluginUpdated") << "adjusted incoming rect is: (" 
					<< newDirtyRect.mLeft << ", "
					<< newDirtyRect.mTop << ", "
					<< newDirtyRect.mRight << ", "
					<< newDirtyRect.mBottom << "), new dirty rect is: ("
					<< mDirtyRect.mLeft << ", "
					<< mDirtyRect.mTop << ", "
					<< mDirtyRect.mRight << ", "
					<< mDirtyRect.mBottom << ")"
					<< LL_ENDL;
				
				mediaEvent(LLPluginClassMediaOwner::MEDIA_EVENT_CONTENT_UPDATED);
			}			
			

			bool time_duration_updated = false;
			int previous_percent = mProgressPercent;

			if(message.hasValue("current_time"))
			{
				mCurrentTime = message.getValueReal("current_time");
				time_duration_updated = true;
			}
			if(message.hasValue("duration"))
			{
				mDuration = message.getValueReal("duration");
				time_duration_updated = true;
			}

			if(message.hasValue("current_rate"))
			{
				mCurrentRate = message.getValueReal("current_rate");
			}
			
			if(message.hasValue("loaded_duration"))
			{
				mLoadedDuration = message.getValueReal("loaded_duration");
				time_duration_updated = true;
			}
			else
//.........这里部分代码省略.........

/* virtual */ 
void LLPluginProcessChild::receivePluginMessage(const std::string &message)
{
	LL_DEBUGS("Plugin") << "Received from plugin: " << message << LL_ENDL;

	// Incoming message from the plugin instance
	bool passMessage = true;

	// FIXME: how should we handle queueing here?
	
	// Intercept certain base messages (responses to ones sent by this class)
	{
		// Decode this message
		LLPluginMessage parsed;
		parsed.parse(message);
		std::string message_class = parsed.getClass();
		if(message_class == "base")
		{
			std::string message_name = parsed.getName();
			if(message_name == "init_response")
			{
				// The plugin has finished initializing.
				setState(STATE_RUNNING);

				// Don't pass this message up to the parent
				passMessage = false;
				
				LLPluginMessage new_message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "load_plugin_response");
				LLSD versions = parsed.getValueLLSD("versions");
				new_message.setValueLLSD("versions", versions);
				
				if(parsed.hasValue("plugin_version"))
				{
					std::string plugin_version = parsed.getValue("plugin_version");
					new_message.setValueLLSD("plugin_version", plugin_version);
				}

				// Let the parent know it's loaded and initialized.
				sendMessageToParent(new_message);
			}
			else if(message_name == "shm_remove_response")
			{
				// Don't pass this message up to the parent
				passMessage = false;

				std::string name = parsed.getValue("name");
				sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name);				
				if(iter != mSharedMemoryRegions.end())
				{
					// detach the shared memory region
					iter->second->detach();
					
					// and remove it from our map
					mSharedMemoryRegions.erase(iter);
					
					// Finally, send the response to the parent.
					LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_remove_response");
					message.setValue("name", name);
					sendMessageToParent(message);
				}
				else
				{
					LL_WARNS("Plugin") << "shm_remove_response for unknown memory segment!" << LL_ENDL;
				}
			}
		}
	}
	
	if(passMessage)
	{
		LL_DEBUGS("Plugin") << "Passing through to parent: " << message << LL_ENDL;
		writeMessageRaw(message);
	}
}