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lightning-sunbird  0.9+nobinonly
nsPNGDecoder.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
00002  *
00003  * ***** BEGIN LICENSE BLOCK *****
00004  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00005  *
00006  * The contents of this file are subject to the Mozilla Public License Version
00007  * 1.1 (the "License"); you may not use this file except in compliance with
00008  * the License. You may obtain a copy of the License at
00009  * http://www.mozilla.org/MPL/
00010  *
00011  * Software distributed under the License is distributed on an "AS IS" basis,
00012  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00013  * for the specific language governing rights and limitations under the
00014  * License.
00015  *
00016  * The Original Code is mozilla.org code.
00017  *
00018  * The Initial Developer of the Original Code is
00019  * Netscape Communications Corporation.
00020  * Portions created by the Initial Developer are Copyright (C) 2001
00021  * the Initial Developer. All Rights Reserved.
00022  *
00023  * Contributor(s):
00024  *   Stuart Parmenter <pavlov@netscape.com>
00025  *
00026  * Alternatively, the contents of this file may be used under the terms of
00027  * either the GNU General Public License Version 2 or later (the "GPL"), or
00028  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00029  * in which case the provisions of the GPL or the LGPL are applicable instead
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00037  *
00038  * ***** END LICENSE BLOCK ***** */
00039 
00040 #ifndef nsPNGDecoder_h__
00041 #define nsPNGDecoder_h__
00042 
00043 #include "imgIDecoder.h"
00044 
00045 #include "imgIContainer.h"
00046 #include "imgIDecoderObserver.h"
00047 #include "gfxIImageFrame.h"
00048 #include "imgILoad.h"
00049 
00050 
00051 #include "nsCOMPtr.h"
00052 
00053 #include "png.h"
00054 
00055 #define NS_PNGDECODER_CID \
00056 { /* 36fa00c2-1dd2-11b2-be07-d16eeb4c50ed */         \
00057      0x36fa00c2,                                     \
00058      0x1dd2,                                         \
00059      0x11b2,                                         \
00060     {0xbe, 0x07, 0xd1, 0x6e, 0xeb, 0x4c, 0x50, 0xed} \
00061 }
00062 
00063 class nsPNGDecoder : public imgIDecoder
00064 {
00065 public:
00066   NS_DECL_ISUPPORTS
00067   NS_DECL_IMGIDECODER
00068 
00069   nsPNGDecoder();
00070   virtual ~nsPNGDecoder();
00071 
00072 public:
00073   nsCOMPtr<imgIContainer> mImage;
00074   nsCOMPtr<gfxIImageFrame> mFrame;
00075   nsCOMPtr<imgILoad> mImageLoad;
00076   nsCOMPtr<imgIDecoderObserver> mObserver; // this is just qi'd from mRequest for speed
00077 
00078   png_structp mPNG;
00079   png_infop mInfo;
00080   PRUint8 *colorLine, *alphaLine;
00081   PRUint8 *interlacebuf;
00082   PRUint32 ibpr;
00083   PRPackedBool mError;
00084 };
00085 
00086 #endif // nsPNGDecoder_h__