Second Life viewer sources 1.19.1.0

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+/**
+ * @file llmediaimplexample1.cpp
+ * @brief Example 1 of a media impl concrete class
+ *
+ * $LicenseInfo:firstyear=2007&license=viewergpl$
+ * 
+ * Copyright (c) 2007-2008, 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://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 "llmediaimplexample1.h"
+#include "llmediaimplregister.h"
+
+// register this impl with media manager factory
+static LLMediaImplRegister sLLMediaImplExample1Reg( "LLMediaImplExample1", new LLMediaImplExample1Maker() );
+
+#include <iostream>
+
+#include <time.h>
+
+///////////////////////////////////////////////////////////////////////////////
+//
+LLMediaImplExample1Maker::LLMediaImplExample1Maker()
+{
+        // Register to handle the scheme
+        mSchema.push_back( "example1" );
+}
+
+///////////////////////////////////////////////////////////////////////////////
+//
+LLMediaImplExample1::LLMediaImplExample1() :
+        mMediaPixels( 0 )
+{
+        setRequestedMediaSize( 400, 200 );
+        setMediaDepth( 3 );
+
+        srand( (unsigned int)(time( NULL )) );
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// (static) super-initialization - called once at application startup
+bool LLMediaImplExample1::startup( LLMediaManagerData* init_data )
+{
+        return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// (static) super-uninitialization - called once at application closedown
+bool LLMediaImplExample1::closedown()
+{
+        return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// virtual
+bool LLMediaImplExample1::init()
+{
+        int buffer_size = getMediaBufferSize();
+
+        mMediaPixels = new unsigned char[ buffer_size ];
+
+        memset( mMediaPixels, 0xAA, buffer_size );
+
+        return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// virtual
+bool LLMediaImplExample1::navigateTo( const std::string url )
+{
+        std::cout << "LLMediaImplExample1::navigateTo" << std::endl;
+
+        setStatus( LLMediaBase::STATUS_NAVIGATING );
+
+        // force a size change event for new URL
+        LLMediaEvent event( this );
+        mEventEmitter.update( &LLMediaObserver::onMediaSizeChange, event );
+
+        return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// virtual
+std::string LLMediaImplExample1::getVersion()
+{
+        std::string version_string = "[" + sLLMediaImplExample1Reg.getImplName() + "] - " + "1.0.0.0";
+
+        return version_string;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// virtual
+bool LLMediaImplExample1::updateMedia()
+{
+        if ( mMediaPixels && getStatus() == LLMediaBase::STATUS_STARTED )
+        {
+                // first time - make sure it's a few seconds back so first update happens immediately
+                static time_t t = time( 0 ) - 4;
+
+                // selected time period elapsed (1 second)
+                if ( time( 0 ) - t > 1 )
+                {
+                        // display checkerboard
+                        const int num_squares = rand() % 20 + 4;
+                        int sqr1_r = rand() % 0x80;
+                        int sqr1_g = rand() % 0x80;
+                        int sqr1_b = rand() % 0x80;
+                        int sqr2_r = rand() % 0x80;
+                        int sqr2_g = rand() % 0x80;
+                        int sqr2_b = rand() % 0x80;
+
+                        for ( int y1 = 0; y1 < num_squares; ++y1 )
+                        {
+                                for ( int x1 = 0; x1 < num_squares; ++x1 )
+                                {
+                                        int px_start = getMediaWidth() * x1 / num_squares;
+                                        int px_end = ( getMediaWidth() * ( x1 + 1 ) ) / num_squares;
+                                        int py_start = getMediaHeight() * y1 / num_squares;
+                                        int py_end = ( getMediaHeight() * ( y1 + 1 ) ) / num_squares;
+
+                                        for( int y2 = py_start; y2 < py_end; ++y2 )
+                                        {
+                                                for( int x2 = px_start; x2 < px_end; ++x2 )
+                                                {
+                                                        int rowspan = getMediaWidth() * getMediaDepth();
+
+                                                        if ( ( y1 % 2 ) ^ ( x1 % 2 ) )
+                                                        {
+                                                                mMediaPixels[ y2 * rowspan + x2 * getMediaDepth() + 0 ] = sqr1_r;
+                                                                mMediaPixels[ y2 * rowspan + x2 * getMediaDepth() + 1 ] = sqr1_g;
+                                                                mMediaPixels[ y2 * rowspan + x2 * getMediaDepth() + 2 ] = sqr1_b;
+                                                        }
+                                                        else
+                                                        {
+                                                                mMediaPixels[ y2 * rowspan + x2 * getMediaDepth() + 0 ] = sqr2_r;
+                                                                mMediaPixels[ y2 * rowspan + x2 * getMediaDepth() + 1 ] = sqr2_g;
+                                                                mMediaPixels[ y2 * rowspan + x2 * getMediaDepth() + 2 ] = sqr2_b;
+                                                        };
+                                                };
+                                        };
+                                };
+                        };
+
+                        // emit an event to say that something in the media stream changed
+                        LLMediaEvent event( this );
+                        mEventEmitter.update( &LLMediaObserver::onMediaContentsChange, event );
+
+                        // reset time
+                        t = time( 0 );
+
+                        return true;
+                };
+        };
+
+        // update the command (e.g. transport controls) state
+        updateCommand();
+
+        return false;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// virtual
+unsigned char* LLMediaImplExample1::getMediaData()
+{
+        return mMediaPixels;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// virtual
+bool LLMediaImplExample1::reset()
+{
+        if ( mMediaPixels )
+        {
+                delete [] mMediaPixels;
+        };
+
+        return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// virtual
+bool LLMediaImplExample1::mouseMove( int x_pos, int y_pos )
+{
+        if ( mMediaPixels && getStatus() == LLMediaBase::STATUS_STARTED )
+        {
+                int base_pos = x_pos * getMediaDepth() + y_pos * getMediaDepth() * getMediaWidth();
+                // example: write a bright pixel to the display when we move the mouse
+                mMediaPixels[ base_pos + 0 ] = rand() % 0x80 + 0x80;
+                mMediaPixels[ base_pos + 1 ] = rand() % 0x80 + 0x80;
+                mMediaPixels[ base_pos + 2 ] = rand() % 0x80 + 0x80;
+
+                // emit an event to say that something in the media stream changed
+                LLMediaEvent event( this );
+                mEventEmitter.update( &LLMediaObserver::onMediaContentsChange, event );
+        };
+
+        return true;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// virtual
+bool LLMediaImplExample1::setRequestedMediaSize( int width, int height )
+{
+        // we accept any size:
+        return setMediaSize(width, height);
+}