/*****************************************************************************
* file_bitmap.cpp
*****************************************************************************
* Copyright (C) 2003 the VideoLAN team
*
* Authors: Cyril Deguet <asmax@via.ecp.fr>
* Olivier Teulière <ipkiss@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.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_image.h>
#include <vlc_url.h>
#include "file_bitmap.hpp"
FileBitmap::FileBitmap( intf_thread_t *pIntf, image_handler_t *pImageHandler,
const std::string &fileName, uint32_t aColor, int nbFrames,
int fps, int nbLoops ):
GenericBitmap( pIntf, nbFrames, fps, nbLoops ), m_width( 0 ), m_height( 0 ),
m_pData( NULL )
{
video_format_t fmt_out;
picture_t *pPic;
unsigned size;
video_format_Init( &fmt_out, VLC_CODEC_RGBA );
std::string uriName = fileName;
if( strstr( fileName.c_str(), "://" ) == NULL )
{
char *psz_uri = vlc_path2uri( fileName.c_str(), NULL );
if( !psz_uri )
return;
uriName = psz_uri;
free( psz_uri );
}
pPic = image_ReadUrl( pImageHandler, uriName.c_str(), &fmt_out );
if( !pPic )
{
video_format_Clean( &fmt_out );
return;
}
m_width = fmt_out.i_width;
m_height = fmt_out.i_height;
video_format_Clean( &fmt_out );
if (mul_overflow((unsigned)m_width, (unsigned)m_height, &size)
|| mul_overflow(size, 4, &size))
throw std::bad_alloc();
m_pData = new uint8_t[size];
// Compute the alpha layer
uint8_t *pData = m_pData, *pSrc = pPic->p->p_pixels;
for( int y = 0; y < m_height; y++ )
{
for( int x = 0; x < m_width; x++ )
{
uint32_t r = *pSrc++;
uint32_t g = *pSrc++;
uint32_t b = *pSrc++;
uint8_t a = *pSrc++;
*(pData++) = b * a / 255;
*(pData++) = g * a / 255;
*(pData++) = r * a / 255;
// Transparent pixel ?
if( aColor == (r<<16 | g<<8 | b) )
{
*pData = 0;
}
else
{
*pData = a;
}
pData++;
}
pSrc += pPic->p->i_pitch - m_width * 4;
}
picture_Release( pPic );
return;
}
FileBitmap::~FileBitmap()
{
delete[] m_pData;
}
uint8_t *FileBitmap::getData() const
{
if( m_pData == NULL )
{
msg_Warn( getIntf(), "FileBitmap::getData() returns NULL" );
}
return m_pData;
}
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(vorverarbeitet am 2026-11-04)
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*© Formatika GbR, Deutschland