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/**
* @file llmediaimplexample2.cpp
* @brief Example 2 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 "llmediaimplexample2.h"
#include "llmediaimplregister.h"
#include <cstring>
// register this impl with media manager factory
static LLMediaImplRegister sLLMediaImplExample2Reg( "LLMediaImplExample2", new LLMediaImplExample2Maker() );
#include <iostream>
#include <time.h>
///////////////////////////////////////////////////////////////////////////////
//
LLMediaImplExample2Maker::LLMediaImplExample2Maker()
{
// Register to handle the scheme
mSchema.push_back( "example2." );
}
///////////////////////////////////////////////////////////////////////////////
//
LLMediaImplExample2::LLMediaImplExample2() :
mMediaPixels( 0 )
{
setRequestedMediaSize( 500, 500 );
setMediaDepth( 3 );
mXpos = ( getMediaWidth() / 2 ) + rand() % ( getMediaWidth() / 16 ) - ( getMediaWidth() / 32 );
mYpos = ( getMediaHeight() / 2 ) + rand() % ( getMediaHeight() / 16 ) - ( getMediaHeight() / 32 );
srand( (unsigned int)(time( NULL )) );
}
////////////////////////////////////////////////////////////////////////////////
// (static) super-initialization - called once at application startup
bool LLMediaImplExample2::startup( LLMediaManagerData* init_data )
{
return true;
}
////////////////////////////////////////////////////////////////////////////////
// (static) super-uninitialization - called once at application closedown
bool LLMediaImplExample2::closedown()
{
return true;
}
////////////////////////////////////////////////////////////////////////////////
// virtual
bool LLMediaImplExample2::init()
{
int buffer_size = getMediaBufferSize();
mMediaPixels = new unsigned char[ buffer_size ];
memset( mMediaPixels, 0x00, buffer_size );
return true;
}
////////////////////////////////////////////////////////////////////////////////
// virtual
bool LLMediaImplExample2::navigateTo( const std::string url )
{
std::cout << "LLMediaImplExample2::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 LLMediaImplExample2::getVersion()
{
std::string version_string = "[" + sLLMediaImplExample2Reg.getImplName() + "] - " + "1.0.0.0";
return version_string;
}
////////////////////////////////////////////////////////////////////////////////
// virtual
bool LLMediaImplExample2::updateMedia()
{
if ( mMediaPixels && getStatus() == LLMediaBase::STATUS_STARTED )
{
static int x_inc = rand() % 5 + 2;
static int y_inc = rand() % 5 + 2;
int block_size = 32;
for( int y = 0; y < block_size; ++y )
{
for( int x = 0; x < block_size; ++x )
{
int rowspan = getMediaWidth() * getMediaDepth();
mMediaPixels[ ( mXpos + x ) * getMediaDepth() + ( mYpos + y ) * rowspan + 0 ] = 0;
mMediaPixels[ ( mXpos + x ) * getMediaDepth() + ( mYpos + y ) * rowspan + 1 ] = 0;
mMediaPixels[ ( mXpos + x ) * getMediaDepth() + ( mYpos + y ) * rowspan + 2 ] = 0;
};
};
if ( mXpos + x_inc < 0 || mXpos + x_inc >= getMediaWidth() - block_size )
x_inc =- x_inc;
if ( mYpos + y_inc < 0 || mYpos + y_inc >= getMediaHeight() - block_size )
y_inc =- y_inc;
mXpos += x_inc;
mYpos += y_inc;
unsigned char col_r = rand() % 0xff;
unsigned char col_g = rand() % 0xff;
unsigned char col_b = rand() % 0xff;
for( int y = 0; y < block_size; ++y )
{
for( int x = 0; x < block_size; ++x )
{
int rowspan = getMediaWidth() * getMediaDepth();
mMediaPixels[ ( mXpos + x ) * getMediaDepth() + ( mYpos + y ) * rowspan + 0 ] = col_r;
mMediaPixels[ ( mXpos + x ) * getMediaDepth() + ( mYpos + y ) * rowspan + 1 ] = col_g;
mMediaPixels[ ( mXpos + x ) * getMediaDepth() + ( mYpos + y ) * rowspan + 2 ] = col_b;
};
};
// emit an event to say that something in the media stream changed
LLMediaEvent event( this );
mEventEmitter.update( &LLMediaObserver::onMediaContentsChange, event );
};
// update the command (e.g. transport controls) state
updateCommand();
return false;
}
////////////////////////////////////////////////////////////////////////////////
// virtual
unsigned char* LLMediaImplExample2::getMediaData()
{
return mMediaPixels;
}
////////////////////////////////////////////////////////////////////////////////
// virtual
bool LLMediaImplExample2::reset()
{
if ( mMediaPixels )
{
delete [] mMediaPixels;
};
return true;
}
////////////////////////////////////////////////////////////////////////////////
// virtual
bool LLMediaImplExample2::setRequestedMediaSize( int width, int height )
{
// we accept any size:
return setMediaSize(width, height);
}
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