modules/gui/skins2/src/file_bitmap.cpp

   1 /*****************************************************************************
   2  * file_bitmap.cpp
   3  *****************************************************************************
   4  * Copyright (C) 2003 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Cyril Deguet     <asmax@via.ecp.fr>
   8  *          Olivier Teulière <ipkiss@via.ecp.fr>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 #ifdef HAVE_CONFIG_H
  26 # include "config.h"
  27 #endif
  28
  29 #include <vlc_common.h>
  30 #include <vlc_image.h>
  31 #include <vlc_url.h>
  32 #include "file_bitmap.hpp"
  33
  34 FileBitmap::FileBitmap( intf_thread_t *pIntf, image_handler_t *pImageHandler,
  35                         string fileName, uint32_t aColor, int nbFrames,
  36                         int fps, int nbLoops ):
  37     GenericBitmap( pIntf, nbFrames, fps, nbLoops ), m_width( 0 ), m_height( 0 ),
  38     m_pData( NULL )
  39 {
  40     video_format_t fmt_in = {0}, fmt_out = {0};
  41     picture_t *pPic;
  42
  43     fmt_out.i_chroma = VLC_CODEC_RGBA;
  44
  45     char* psz_uri = make_URI( fileName.c_str(), NULL );
  46     pPic = image_ReadUrl( pImageHandler, psz_uri, &fmt_in, &fmt_out );
  47     free( psz_uri );
  48
  49     if( !pPic )
  50         return;
  51
  52     m_width = fmt_out.i_width;
  53     m_height = fmt_out.i_height;
  54
  55     m_pData = new uint8_t[m_height * m_width * 4];
  56
  57     // Compute the alpha layer
  58     uint8_t *pData = m_pData, *pSrc = pPic->p->p_pixels;
  59     for( int y = 0; y < m_height; y++ )
  60     {
  61         for( int x = 0; x < m_width; x++ )
  62         {
  63             uint32_t r = *pSrc++;
  64             uint32_t g = *pSrc++;
  65             uint32_t b = *pSrc++;
  66             uint8_t  a = *pSrc++;
  67
  68             *(pData++) = b * a / 255;
  69             *(pData++) = g * a / 255;
  70             *(pData++) = r * a / 255;
  71
  72             // Transparent pixel ?
  73             if( aColor == (r<<16 | g<<8 | b) )
  74             {
  75                 *pData = 0;
  76             }
  77             else
  78             {
  79                 *pData = a;
  80             }
  81             pData++;
  82         }
  83         pSrc += pPic->p->i_pitch - m_width * 4;
  84     }
  85
  86     picture_Release( pPic );
  87     return;
  88 }
  89
  90
  91 FileBitmap::~FileBitmap()
  92 {
  93     delete[] m_pData;
  94 }
  95
  96
  97 uint8_t *FileBitmap::getData() const
  98 {
  99     if( m_pData == NULL )
 100     {
 101         msg_Warn( getIntf(), "FileBitmap::getData() returns NULL" );
 102     }
 103     return m_pData;
 104 }