www.pudn.com > VCMPlayerClassic_Coder.rar > libpng.h

/*  
 *	Copyright (C) 2003-2006 Gabest 
 *	http://www.gabest.org 
 * 
 *  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, 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 GNU Make; see the file COPYING.  If not, write to 
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  
 *  http://www.gnu.org/copyleft/gpl.html 
 * 
 */ 
 
#pragma once 
 
struct png_t {unsigned char* data; unsigned int size, pos;}; 
 
#ifdef __cplusplus 
 
extern "C" unsigned char* DecompressPNG(struct png_t* png, int* w, int* h); 
 
#include  
 
class CPngImage : public CImage 
{ 
public: 
	bool LoadFromResource(UINT id) 
	{ 
		bool ret = false; 
 
		CStringA str; 
		if(LoadResource(id, str, _T("FILE"))) 
		{ 
			struct png_t png; 
			png.data = (unsigned char*)(LPCSTR)str; 
			png.size = str.GetLength(); 
			int w, h; 
			if(BYTE* p = DecompressPNG(&png, &w, &h)) 
			{ 
				if(Create(w, -h, 32)) 
				{ 
					for(int y = 0; y < h; y++)  
						memcpy(GetPixelAddress(0, y), &p[w*4*y], w*4); 
					ret = true; 
				} 
 
				free(p); 
			} 
		} 
 
		return ret; 
	} 
}; 
#endif