llmediaplugins first step

1 files changed, 155 insertions, 0 deletions

diff --git a/linden/indra/media_plugins/base/media_plugin_base.cpp b/linden/indra/media_plugins/base/media_plugin_base.cpp
new file mode 100644
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+++ b/linden/indra/media_plugins/base/media_plugin_base.cpp
@@ -0,0 +1,155 @@
+/** 
+ * @file media_plugin_base.cpp
+ * @brief Media plugin base class for LLMedia API plugin system
+ *
+ * $LicenseInfo:firstyear=2008&license=viewergpl$
+ * 
+ * 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"
+#include "media_plugin_base.h"
+
+
+// TODO: Make sure that the only symbol exported from this library is LLPluginInitEntryPoint
+////////////////////////////////////////////////////////////////////////////////
+//
+
+MediaPluginBase::MediaPluginBase(
+        LLPluginInstance::sendMessageFunction host_send_func,
+        void *host_user_data )
+{
+        mHostSendFunction = host_send_func;
+        mHostUserData = host_user_data;
+        mDeleteMe = false;
+        mPixels = 0;
+        mWidth = 0;
+        mHeight = 0;
+        mTextureWidth = 0;
+        mTextureHeight = 0;
+        mDepth = 0;
+        mStatus = STATUS_NONE;
+}
+
+std::string MediaPluginBase::statusString()
+{
+        std::string result;
+        
+        switch(mStatus)
+        {
+                case STATUS_LOADING:    result = "loading";             break;
+                case STATUS_LOADED:             result = "loaded";              break;
+                case STATUS_ERROR:              result = "error";               break;
+                case STATUS_PLAYING:    result = "playing";             break;
+                case STATUS_PAUSED:             result = "paused";              break;
+                default:
+                        // keep the empty string
+                break;
+        }
+        
+        return result;
+}
+        
+void MediaPluginBase::setStatus(EStatus status)
+{
+        if(mStatus != status)
+        {
+                mStatus = status;
+                sendStatus();
+        }
+}
+
+
+void MediaPluginBase::staticReceiveMessage(const char *message_string, void **user_data)
+{
+        MediaPluginBase *self = (MediaPluginBase*)*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 MediaPluginBase::sendMessage(const LLPluginMessage &message)
+{
+        std::string output = message.generate();
+        mHostSendFunction(output.c_str(), &mHostUserData);
+}
+
+void MediaPluginBase::setDirty(int left, int top, int right, int bottom)
+{
+        LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "updated");
+
+        message.setValueS32("left", left);
+        message.setValueS32("top", top);
+        message.setValueS32("right", right);
+        message.setValueS32("bottom", bottom);
+        
+        sendMessage(message);
+}
+
+void MediaPluginBase::sendStatus()
+{
+        LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "media_status");
+
+        message.setValue("status", statusString());
+        
+        sendMessage(message);
+}
+
+
+#if LL_WINDOWS
+# define LLSYMEXPORT __declspec(dllexport)
+#elif LL_LINUX
+# define LLSYMEXPORT __attribute__ ((visibility("default")))
+#else
+# define LLSYMEXPORT /**/
+#endif
+
+extern "C"
+{
+        LLSYMEXPORT int LLPluginInitEntryPoint(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data);
+}
+
+LLSYMEXPORT int
+LLPluginInitEntryPoint(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data)
+{
+        return init_media_plugin(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