/*****************************************************************************
* generic_bitmap.cpp
*****************************************************************************
* Copyright (C) 2004 the VideoLAN team
*
* Authors: Cyril Deguet <asmax@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include "generic_bitmap.hpp"
#include "os_factory.hpp"
GenericBitmap::GenericBitmap( intf_thread_t *pIntf,
int nbFrames, int fps, int nbLoops ):
SkinObject( pIntf ), m_nbFrames( nbFrames ),
m_frameRate( fps ), m_nbLoops( nbLoops ), m_pGraphics( NULL )
{
}
const OSGraphics *GenericBitmap::getGraphics() const
{
if( m_pGraphics )
return m_pGraphics;
OSFactory *pOsFactory = OSFactory::instance( getIntf() );
int width = getWidth();
int height = getHeight();
if( width > 0 && height > 0 )
{
m_pGraphics = pOsFactory->createOSGraphics( width, height );
m_pGraphics->drawBitmap( *this, 0, 0 );
return m_pGraphics;
}
msg_Err( getIntf(), "failed to create a graphics, please report" );
return NULL;
}
BitmapImpl::BitmapImpl( intf_thread_t *pIntf, int width, int height,
int nbFrames, int fps, int nbLoops ):
GenericBitmap( pIntf, nbFrames, fps, nbLoops ), m_width( width ),
m_height( height ), m_pData( NULL )
{
unsigned size;
if (mul_overflow((unsigned)width, (unsigned)height, &size)
|| mul_overflow(size, 4, &size))
throw std::bad_alloc();
m_pData = new uint8_t[size];
memset(m_pData, 0, size);
}
BitmapImpl::~BitmapImpl()
{
delete[] m_pData;
}
bool BitmapImpl::drawBitmap( const GenericBitmap &rSource, int xSrc, int ySrc,
int xDest, int yDest, int width, int height )
{
int srcWidth = rSource.getWidth();
uint32_t *pSrc = (uint32_t*)rSource.getData() + ySrc * srcWidth + xSrc;
if( xSrc < 0 || xSrc + width > srcWidth ||
ySrc < 0 || ySrc + height > rSource.getHeight() )
{
msg_Warn( getIntf(), "drawBitmap: source rect too small, ignoring" );
return false;
}
if( xDest < 0 || xDest + width > m_width ||
yDest < 0 || yDest + height > m_height )
{
msg_Warn( getIntf(), "drawBitmap: dest rect too small, ignoring" );
return false;
}
uint32_t *pDest = (uint32_t*)m_pData + yDest * m_width + xDest ;
for( int y = 0; y < height; y++ )
{
memcpy( pDest, pSrc, 4 * width );
pSrc += srcWidth;
pDest += m_width;
}
return true;
}
¤ Dauer der Verarbeitung: 0.0 Sekunden
(vorverarbeitet am 2026-11-04)
¤
*© Formatika GbR, Deutschland
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