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/**
* @file llmediaimplexample1.cpp
* @brief Example 1 of a media impl concrete class
*
* $LicenseInfo:firstyear=2007&license=viewergpl$
*
* Copyright (c) 2007-2009, 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 "llmediaimplexample1.h"
#include "llmediaimplregister.h"
#include <cstring>
// 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);
}
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