llmediaplugins first step

1 files changed, 220 insertions, 0 deletions

diff --git a/linden/indra/test_apps/llplugintest/demo_plugin.cpp b/linden/indra/test_apps/llplugintest/demo_plugin.cpp
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+/** 
+ * @file demo_plugin.cpp
+ * @brief Test plugin to be loaded by the llplugin testbed.
+ *
+ * $LicenseInfo:firstyear=2008&license=viewergpl$
+ * 
+ * Copyright (c) 2008-2009, 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://secondlifegrid.net/programs/open_source/licensing/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://secondlifegrid.net/programs/open_source/licensing/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.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+#include "llplugininstance.h"
+#include "llpluginmessage.h"
+#include "llpluginmessageclasses.h"
+
+// TODO: Make sure that the only symbol exported from this library is LLPluginInitEntryPoint
+
+class DemoPlugin
+{
+public:
+
+        static int init(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data);
+
+private:
+        DemoPlugin(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data);
+        ~DemoPlugin();
+
+        static void staticReceiveMessage(const char *message_string, void **user_data);
+        void receiveMessage(const char *message_string);
+        void sendMessage(const LLPluginMessage &message);
+
+        LLPluginInstance::sendMessageFunction mHostSendFunction;
+        void *mHostUserData;
+        bool mDeleteMe;
+        
+        int mSharedSegmentFillValue;
+        void *mSharedSegmentBase;
+        size_t mSharedSegmentSize;
+};
+
+int DemoPlugin::init(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data)
+{
+        DemoPlugin *self = new DemoPlugin(host_send_func, host_user_data);
+        *plugin_send_func = staticReceiveMessage;
+        *plugin_user_data = (void*)self;
+
+        return 0;
+}
+
+DemoPlugin::DemoPlugin(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data)
+{
+        std::cerr << "DemoPlugin constructor" << std::endl;
+
+        mHostSendFunction = host_send_func;
+        mHostUserData = host_user_data;
+        mDeleteMe = false;
+        mSharedSegmentBase = NULL;
+        mSharedSegmentSize = 0;
+        mSharedSegmentFillValue = 0;
+}
+
+DemoPlugin::~DemoPlugin()
+{
+        std::cerr << "DemoPlugin destructor" << std::endl;
+}
+
+void DemoPlugin::staticReceiveMessage(const char *message_string, void **user_data)
+{
+        DemoPlugin *self = (DemoPlugin*)*user_data;
+        
+        if(self != NULL)
+        {
+                self->receiveMessage(message_string);
+        
+                // If the plugin has processed the delete message, delete it.
+                if(self->mDeleteMe)
+                {
+                        delete self;
+                        *user_data = NULL;
+                }
+        }
+}
+
+void DemoPlugin::receiveMessage(const char *message_string)
+{
+//      std::cerr << "DemoPlugin::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 == "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;
+                                message.setValueLLSD("versions", versions);
+                                sendMessage(message);
+                        }
+                        else if(message_name == "idle")
+                        {
+                                // no response is necessary here.
+//                              std::cerr << "DemoPlugin::receiveMessage: idle processing" << std::endl;
+                                if(mSharedSegmentBase != NULL)
+                                {
+                                        // Fill the shared memory segment
+                                        memset(mSharedSegmentBase, mSharedSegmentFillValue, mSharedSegmentSize);
+                                        // and increment the fill value
+                                        mSharedSegmentFillValue++;
+                                }
+                        }
+                        else if(message_name == "shutdown")
+                        {
+                                sendMessage(LLPluginMessage("base", "shutdown_response"));
+                                
+                                mDeleteMe = true;
+                        }
+                        else if(message_name == "shm_added")
+                        {
+                                // Normally, we would check the name and match it up with something from another message.
+                                // For this test, just fill any segment that comes in.
+                                mSharedSegmentSize = (size_t)message_in.getValueS32("size");
+                                mSharedSegmentBase = (void*)message_in.getValueU32("address");
+                                
+                                std::cerr << "DemoPlugin::receiveMessage: shared memory added, name: " << message_in.getValue("name") 
+                                        << ", size: " << mSharedSegmentSize 
+                                        << ", address: " << mSharedSegmentBase 
+                                        << std::endl;
+
+                                memset(mSharedSegmentBase, mSharedSegmentFillValue, mSharedSegmentSize);
+                        
+                        }
+                        else if(message_name == "shm_remove")
+                        {
+                                std::cerr << "DemoPlugin::receiveMessage: shared memory remove" << std::endl;
+                                
+                                // Normally, we would check the name and match it up with something from another message.
+                                // For this test, just stop filling the only segment we track.
+
+                                mSharedSegmentBase = NULL;
+
+                                // Send the response so it can be cleaned up.
+                                LLPluginMessage message("base", "shm_remove_response");
+                                message.setValue("name", message_in.getValue("name"));
+                                sendMessage(message);
+                        }
+                        else
+                        {
+                                std::cerr << "DemoPlugin::receiveMessage: unknown base message: " << message_name << std::endl;
+                        }
+                }
+                else
+                {
+                        std::cerr << "DemoPlugin::receiveMessage: unknown message class: " << message_class << std::endl;
+                }
+
+        }
+}
+
+void DemoPlugin::sendMessage(const LLPluginMessage &message)
+{
+        std::string output = message.generate();
+        mHostSendFunction(output.c_str(), &mHostUserData);
+}
+
+
+extern "C"
+{
+#ifdef WIN32
+        __declspec(dllexport)
+#endif
+                int LLPluginInitEntryPoint(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data);
+}
+
+int 
+#ifdef WIN32
+        __declspec(dllexport)
+#endif
+        LLPluginInitEntryPoint(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data)
+{
+        return DemoPlugin::init(host_send_func, host_user_data, plugin_send_func, plugin_user_data);
+}
+
+#ifdef WIN32
+int WINAPI DllEntryPoint( HINSTANCE hInstance, unsigned long reason, void* params )
+{
+        return 1;
+}
+#endif