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139 lines
3.3 KiB
139 lines
3.3 KiB
14 years ago
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/*==LICENSE==*
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CyanWorlds.com Engine - MMOG client, server and tools
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Copyright (C) 2011 Cyan Worlds, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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You can contact Cyan Worlds, Inc. by email legal@cyan.com
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or by snail mail at:
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Cyan Worlds, Inc.
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14617 N Newport Hwy
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Mead, WA 99021
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*==LICENSE==*/
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#include "hsTypes.h"
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#include "hsStream.h"
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#include "hsExceptions.h"
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#include "hsUtils.h"
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#include "plPNG.h"
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#include "../plGImage/plMipmap.h"
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#include <png.h>
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plMipmap *plPNG::IRead( hsStream *inStream )
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{
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plMipmap *newMipmap = NULL;
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png_structp png_ptr;
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png_infop info_ptr;
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png_infop end_info;
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try
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{
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// Check PNG Signature
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png_byte sig[8];
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inStream->Read8Bytes((char *) sig);
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if (!png_sig_cmp(sig, 0, 8))
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{
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inStream->Rewind();
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// Allocate required structs
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png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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if (!png_ptr)
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throw( false );
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info_ptr = png_create_info_struct(png_ptr);
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if (!info_ptr)
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{
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png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
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throw( false );
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}
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end_info = png_create_info_struct(png_ptr);
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if (!end_info)
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{
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png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
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throw( false );
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}
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// Clean up allocated structs
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png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
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}
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}
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catch( ... )
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{
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if (newMipmap != NULL)
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{
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delete newMipmap;
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newMipmap = NULL;
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}
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}
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return newMipmap;
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}
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plMipmap* plPNG::ReadFromFile( const char *fileName )
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{
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wchar* wFilename = hsStringToWString(fileName);
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plMipmap* retVal = ReadFromFile(wFilename);
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delete [] wFilename;
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return retVal;
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}
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plMipmap* plPNG::ReadFromFile( const wchar *fileName )
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{
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hsUNIXStream in;
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if (!in.Open(fileName, L"rb"))
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return false;
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plMipmap* ret = IRead(&in);
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in.Close();
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return ret;
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}
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hsBool plPNG::IWrite( plMipmap *source, hsStream *outStream )
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{
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hsBool result = true;
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try
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{
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}
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catch( ... )
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{
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result = false;
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}
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return result;
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}
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hsBool plPNG::WriteToFile( const char *fileName, plMipmap *sourceData )
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{
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wchar* wFilename = hsStringToWString(fileName);
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hsBool retVal = WriteToFile(wFilename, sourceData);
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delete [] wFilename;
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return retVal;
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}
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hsBool plPNG::WriteToFile( const wchar *fileName, plMipmap *sourceData )
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{
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hsUNIXStream out;
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if (!out.Open(fileName, L"wb"))
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return false;
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hsBool ret = IWrite(sourceData, &out);
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out.Close();
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return ret;
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}
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