llmediaplugins first step

2 files changed, 562 insertions, 0 deletions

diff --git a/linden/indra/media_plugins/example/CMakeLists.txt b/linden/indra/media_plugins/example/CMakeLists.txt
new file mode 100644
index 0000000..4d82f27
--- /dev/null
+++ b/linden/indra/media_plugins/example/CMakeLists.txt
@@ -0,0 +1,74 @@
+# -*- cmake -*-
+
+project(media_plugin_example)
+
+include(00-Common)
+include(LLCommon)
+include(LLImage)
+include(LLPlugin)
+include(LLMath)
+include(LLRender)
+include(LLWindow)
+include(Linking)
+include(PluginAPI)
+include(MediaPluginBase)
+include(FindOpenGL)
+
+include(ExamplePlugin)
+
+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}
+)
+
+
+### media_plugin_example
+
+set(media_plugin_example_SOURCE_FILES
+    media_plugin_example.cpp
+    )
+
+add_library(media_plugin_example
+    SHARED
+    ${media_plugin_example_SOURCE_FILES}
+)
+
+target_link_libraries(media_plugin_example
+  ${LLPLUGIN_LIBRARIES}
+  ${MEDIA_PLUGIN_BASE_LIBRARIES}
+  ${LLCOMMON_LIBRARIES}
+  ${EXAMPLE_PLUGIN_LIBRARIES}
+  ${PLUGIN_API_WINDOWS_LIBRARIES}
+)
+
+add_dependencies(media_plugin_example
+  ${LLPLUGIN_LIBRARIES}
+  ${MEDIA_PLUGIN_BASE_LIBRARIES}
+  ${LLCOMMON_LIBRARIES}
+)
+
+if (WINDOWS)
+  set_target_properties(
+    media_plugin_example
+    PROPERTIES
+    LINK_FLAGS "/MANIFEST:NO"
+    )
+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_example
+    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)
\ No newline at end of file
diff --git a/linden/indra/media_plugins/example/media_plugin_example.cpp b/linden/indra/media_plugins/example/media_plugin_example.cpp
new file mode 100644
index 0000000..99e0199
--- /dev/null
+++ b/linden/indra/media_plugins/example/media_plugin_example.cpp
@@ -0,0 +1,488 @@
+/**
+ * @file media_plugin_example.cpp
+ * @brief Example plugin for LLMedia API plugin system
+ *
+ * $LicenseInfo:firstyear=2008&license=viewergpl$
+ *
+ * Copyright (c) 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://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.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llgl.h"
+#include "llplugininstance.h"
+#include "llpluginmessage.h"
+#include "llpluginmessageclasses.h"
+#include "media_plugin_base.h"
+
+#include <time.h>
+
+////////////////////////////////////////////////////////////////////////////////
+//
+class MediaPluginExample :
+                public MediaPluginBase
+{
+        public:
+                MediaPluginExample( LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data );
+                ~MediaPluginExample();
+
+                /*virtual*/ void receiveMessage( const char* message_string );
+
+        private:
+                bool init();
+                void update( F64 milliseconds );
+                void write_pixel( int x, int y, unsigned char r, unsigned char g, unsigned char b );
+                bool mFirstTime;
+
+                time_t mLastUpdateTime;
+                enum Constants { ENumObjects = 10 };
+                unsigned char* mBackgroundPixels;
+                int mColorR[ ENumObjects ];
+                int mColorG[ ENumObjects ];
+                int mColorB[ ENumObjects ];
+                int mXpos[ ENumObjects ];
+                int mYpos[ ENumObjects ];
+                int mXInc[ ENumObjects ];
+                int mYInc[ ENumObjects ];
+                int mBlockSize[ ENumObjects ];
+                bool mMouseButtonDown;
+                bool mStopAction;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//
+MediaPluginExample::MediaPluginExample( LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data ) :
+        MediaPluginBase( host_send_func, host_user_data )
+{
+        mFirstTime = true;
+        mWidth = 0;
+        mHeight = 0;
+        mDepth = 4;
+        mPixels = 0;
+        mMouseButtonDown = false;
+        mStopAction = false;
+        mLastUpdateTime = 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+MediaPluginExample::~MediaPluginExample()
+{
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginExample::receiveMessage( const char* message_string )
+{
+        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 = "Example media plugin, Example Version 1.0.0.0";
+                                message.setValue( "plugin_version", plugin_version );
+                                sendMessage( message );
+
+                                // Plugin gets to decide the texture parameters to use.
+                                message.setMessage( LLPLUGIN_MESSAGE_CLASS_MEDIA, "texture_params" );
+                                message.setValueS32( "default_width", mWidth );
+                                message.setValueS32( "default_height", mHeight );
+                                message.setValueS32( "depth", mDepth );
+                                message.setValueU32( "internalformat", GL_RGBA );
+                                message.setValueU32( "format", GL_RGBA );
+                                message.setValueU32( "type", GL_UNSIGNED_BYTE );
+                                message.setValueBoolean( "coords_opengl", false );
+                                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( time );
+                        }
+                        else
+                        if ( message_name == "cleanup" )
+                        {
+                                // clean up here
+                        }
+                        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 )
+                                        {
+                                                // This is the currently active pixel buffer.
+                                                // Make sure we stop drawing to it.
+                                                mPixels = NULL;
+                                                mTextureSegmentName.clear();
+                                        };
+                                        mSharedSegments.erase( iter );
+                                }
+                                else
+                                {
+                                        //std::cerr << "MediaPluginExample::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 << "MediaPluginExample::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" );
+
+                                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;
+
+                                                init();
+                                        };
+                                };
+
+                                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" );
+                                if ( ! uri.empty() )
+                                {
+                                };
+                        }
+                        else
+                        if ( message_name == "mouse_event" )
+                        {
+                                std::string event = message_in.getValue( "event" );
+                                S32 button = message_in.getValueS32( "button" );
+
+                                // left mouse button
+                                if ( button == 0 )
+                                {
+                                        int mouse_x = message_in.getValueS32( "x" );
+                                        int mouse_y = message_in.getValueS32( "y" );
+                                        std::string modifiers = message_in.getValue( "modifiers" );
+
+                                        if ( event == "move" )
+                                        {
+                                                if ( mMouseButtonDown )
+                                                        write_pixel( mouse_x, mouse_y, rand() % 0x80 + 0x80, rand() % 0x80 + 0x80, rand() % 0x80 + 0x80 );
+                                        }
+                                        else
+                                        if ( event == "down" )
+                                        {
+                                                mMouseButtonDown = true;
+                                        }
+                                        else
+                                        if ( event == "up" )
+                                        {
+                                                mMouseButtonDown = false;
+                                        }
+                                        else
+                                        if ( event == "double_click" )
+                                        {
+                                        };
+                                };
+                        }
+                        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" );
+
+                                if ( event == "down" )
+                                {
+                                        if ( key == ' ')
+                                        {
+                                                mLastUpdateTime = 0;
+                                                update( 0.0f );
+                                        };
+                                };
+                        }
+                        else
+                        {
+                                //std::cerr << "MediaPluginExample::receiveMessage: unknown media message: " << message_string << std::endl;
+                        };
+                }
+                else
+                if ( message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER )
+                {
+                        if ( message_name == "browse_reload" )
+                        {
+                                mLastUpdateTime = 0;
+                                mFirstTime = true;
+                                mStopAction = false;
+                                update( 0.0f );
+                        }
+                        else
+                        if ( message_name == "browse_stop" )
+                        {
+                                for( int n = 0; n < ENumObjects; ++n )
+                                        mXInc[ n ] = mYInc[ n ] = 0;
+
+                                mStopAction = true;
+                                update( 0.0f );
+                        }
+                        else
+                        {
+                                //std::cerr << "MediaPluginExample::receiveMessage: unknown media_browser message: " << message_string << std::endl;
+                        };
+                }
+                else
+                {
+                        //std::cerr << "MediaPluginExample::receiveMessage: unknown message class: " << message_class << std::endl;
+                };
+        };
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginExample::write_pixel( int x, int y, unsigned char r, unsigned char g, unsigned char b )
+{
+        // make sure we don't write outside the buffer
+        if ( ( x < 0 ) || ( x >= mWidth ) || ( y < 0 ) || ( y >= mHeight ) )
+                return;
+                
+        if ( mBackgroundPixels != NULL )
+        {
+                unsigned char *pixel = mBackgroundPixels;
+                pixel += y * mWidth * mDepth;
+                pixel += ( x * mDepth );
+                pixel[ 0 ] = b;
+                pixel[ 1 ] = g;
+                pixel[ 2 ] = r;
+
+                setDirty( x, y, x + 1, y + 1 );
+        };
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+void MediaPluginExample::update( F64 milliseconds )
+{
+        if ( mWidth < 1 || mWidth > 2048 || mHeight < 1 || mHeight > 2048 )
+                return;
+
+        if ( mPixels == 0 )
+                        return;
+
+        if ( mFirstTime )
+        {
+                for( int n = 0; n < ENumObjects; ++n )
+                {
+                        mXpos[ n ] = ( mWidth / 2 ) + rand() % ( mWidth / 16 ) - ( mWidth / 32 );
+                        mYpos[ n ] = ( mHeight / 2 ) + rand() % ( mHeight / 16 ) - ( mHeight / 32 );
+
+                        mColorR[ n ] = rand() % 0x60 + 0x60;
+                        mColorG[ n ] = rand() % 0x60 + 0x60;
+                        mColorB[ n ] = rand() % 0x60 + 0x60;
+
+                        mXInc[ n ] = 0;
+                        while ( mXInc[ n ] == 0 )
+                                mXInc[ n ] = rand() % 7 - 3;
+
+                        mYInc[ n ] = 0;
+                        while ( mYInc[ n ] == 0 )
+                                mYInc[ n ] = rand() % 9 - 4;
+
+                        mBlockSize[ n ] = rand() % 0x30 + 0x10;
+                };
+
+                delete [] mBackgroundPixels;
+                                
+                mBackgroundPixels = new unsigned char[ mWidth * mHeight * mDepth ];
+
+                mFirstTime = false;
+        };
+
+        if ( mStopAction )
+                return;
+
+        if ( time( NULL ) > mLastUpdateTime + 3 )
+        {
+                const int num_squares = rand() % 20 + 4;
+                int sqr1_r = rand() % 0x80 + 0x20;
+                int sqr1_g = rand() % 0x80 + 0x20;
+                int sqr1_b = rand() % 0x80 + 0x20;
+                int sqr2_r = rand() % 0x80 + 0x20;
+                int sqr2_g = rand() % 0x80 + 0x20;
+                int sqr2_b = rand() % 0x80 + 0x20;
+
+                for ( int y1 = 0; y1 < num_squares; ++y1 )
+                {
+                        for ( int x1 = 0; x1 < num_squares; ++x1 )
+                        {
+                                int px_start = mWidth * x1 / num_squares;
+                                int px_end = ( mWidth * ( x1 + 1 ) ) / num_squares;
+                                int py_start = mHeight * y1 / num_squares;
+                                int py_end = ( mHeight * ( y1 + 1 ) ) / num_squares;
+
+                                for( int y2 = py_start; y2 < py_end; ++y2 )
+                                {
+                                        for( int x2 = px_start; x2 < px_end; ++x2 )
+                                        {
+                                                int rowspan = mWidth * mDepth;
+
+                                                if ( ( y1 % 2 ) ^ ( x1 % 2 ) )
+                                                {
+                                                        mBackgroundPixels[ y2 * rowspan + x2 * mDepth + 0 ] = sqr1_r;
+                                                        mBackgroundPixels[ y2 * rowspan + x2 * mDepth + 1 ] = sqr1_g;
+                                                        mBackgroundPixels[ y2 * rowspan + x2 * mDepth + 2 ] = sqr1_b;
+                                                }
+                                                else
+                                                {
+                                                        mBackgroundPixels[ y2 * rowspan + x2 * mDepth + 0 ] = sqr2_r;
+                                                        mBackgroundPixels[ y2 * rowspan + x2 * mDepth + 1 ] = sqr2_g;
+                                                        mBackgroundPixels[ y2 * rowspan + x2 * mDepth + 2 ] = sqr2_b;
+                                                };
+                                        };
+                                };
+                        };
+                };
+
+                time( &mLastUpdateTime );
+        };
+
+        memcpy( mPixels, mBackgroundPixels, mWidth * mHeight * mDepth );
+
+        for( int n = 0; n < ENumObjects; ++n )
+        {
+                if ( rand() % 50 == 0 )
+                {
+                                mXInc[ n ] = 0;
+                                while ( mXInc[ n ] == 0 )
+                                        mXInc[ n ] = rand() % 7 - 3;
+
+                                mYInc[ n ] = 0;
+                                while ( mYInc[ n ] == 0 )
+                                        mYInc[ n ] = rand() % 9 - 4;
+                };
+
+                if ( mXpos[ n ] + mXInc[ n ] < 0 || mXpos[ n ] + mXInc[ n ] >= mWidth - mBlockSize[ n ] )
+                        mXInc[ n ] =- mXInc[ n ];
+
+                if ( mYpos[ n ] + mYInc[ n ] < 0 || mYpos[ n ] + mYInc[ n ] >= mHeight - mBlockSize[ n ] )
+                        mYInc[ n ] =- mYInc[ n ];
+
+                mXpos[ n ] += mXInc[ n ];
+                mYpos[ n ] += mYInc[ n ];
+
+                for( int y = 0; y < mBlockSize[ n ]; ++y )
+                {
+                        for( int x = 0; x < mBlockSize[ n ]; ++x )
+                        {
+                                mPixels[ ( mXpos[ n ] + x ) * mDepth + ( mYpos[ n ] + y ) * mDepth * mWidth + 0 ] = mColorR[ n ];
+                                mPixels[ ( mXpos[ n ] + x ) * mDepth + ( mYpos[ n ] + y ) * mDepth * mWidth + 1 ] = mColorG[ n ];
+                                mPixels[ ( mXpos[ n ] + x ) * mDepth + ( mYpos[ n ] + y ) * mDepth * mWidth + 2 ] = mColorB[ n ];
+                        };
+                };
+        };
+
+        setDirty( 0, 0, mWidth, mHeight );
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//
+bool MediaPluginExample::init()
+{
+        LLPluginMessage message( LLPLUGIN_MESSAGE_CLASS_MEDIA, "name_text" );
+        message.setValue( "name", "Example 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 )
+{
+        MediaPluginExample* self = new MediaPluginExample( host_send_func, host_user_data );
+        *plugin_send_func = MediaPluginExample::staticReceiveMessage;
+        *plugin_user_data = ( void* )self;
+
+        return 0;
+}