ft2_bitmap.cpp
资源名称:vlc-1.0.5.zip [点击查看]
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上传日期:2020-07-06
资源大小:29949k
文件大小:2k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * ft2_bitmap.cpp
- *****************************************************************************
- * Copyright (C) 2003 the VideoLAN team
- * $Id: 7cc8a84f45b561fceebe7951cb6abb5be17e0a86 $
- *
- * 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.
- *****************************************************************************/
- #include "ft2_bitmap.hpp"
- FT2Bitmap::FT2Bitmap( intf_thread_t *pIntf, int width, int height ):
- GenericBitmap( pIntf ), m_width( width ), m_height( height )
- {
- // Allocate memory for the buffer
- m_pData = new uint8_t[m_height * m_width * 4];
- memset( m_pData, 0, m_height * m_width * 4 );
- }
- FT2Bitmap::~FT2Bitmap()
- {
- if( m_pData )
- {
- delete[] m_pData;
- }
- }
- void FT2Bitmap::draw( const FT_Bitmap &rBitmap, int left, int top,
- uint32_t color )
- {
- uint8_t *pBuf = rBitmap.buffer;
- // Calculate colors
- uint8_t blue = color & 0xff;
- uint8_t green = (color >> 8) & 0xff;
- uint8_t red = (color >> 16) & 0xff;
- for( int y = top; y < top + rBitmap.rows; y++ )
- {
- uint8_t *pData = m_pData + 4 * (m_width * y + left);
- for( int x = left; x < left + rBitmap.width; x++ )
- {
- // The buffer in FT_Bitmap contains alpha values
- uint8_t val = *(pBuf++);
- *(pData++) = (blue * val) >> 8;
- *(pData++) = (green * val) >> 8;
- *(pData++) = (red * val) >> 8;
- *(pData++) = val;
- }
- }
- }