gecko/modules/libpr0n/decoders/png/nsPNGDecoder.h
2009-12-03 18:41:00 -08:00

109 lines
3.3 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@netscape.com>
* Bobby Holley <bobbyholley@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsPNGDecoder_h__
#define nsPNGDecoder_h__
#include "imgIDecoder.h"
#include "imgIContainer.h"
#include "imgIDecoderObserver.h"
#include "gfxASurface.h"
#include "nsCOMPtr.h"
#include "png.h"
#include "qcms.h"
#define NS_PNGDECODER_CID \
{ /* 36fa00c2-1dd2-11b2-be07-d16eeb4c50ed */ \
0x36fa00c2, \
0x1dd2, \
0x11b2, \
{0xbe, 0x07, 0xd1, 0x6e, 0xeb, 0x4c, 0x50, 0xed} \
}
class nsPNGDecoder : public imgIDecoder
{
public:
NS_DECL_ISUPPORTS
NS_DECL_IMGIDECODER
nsPNGDecoder();
virtual ~nsPNGDecoder();
void CreateFrame(png_uint_32 x_offset, png_uint_32 y_offset,
PRInt32 width, PRInt32 height,
gfxASurface::gfxImageFormat format);
void SetAnimFrameInfo();
void EndImageFrame();
void NotifyDone(PRBool aSuccess);
public:
nsCOMPtr<imgIContainer> mImage;
nsCOMPtr<imgIDecoderObserver> mObserver;
PRUint32 mFlags;
png_structp mPNG;
png_infop mInfo;
nsIntRect mFrameRect;
PRUint8 *mCMSLine;
PRUint8 *interlacebuf;
PRUint8 *mImageData;
qcms_profile *mInProfile;
qcms_transform *mTransform;
gfxASurface::gfxImageFormat format;
// For header-only decodes
PRUint8 *mHeaderBuf;
PRUint32 mHeaderBytesRead;
PRUint8 mChannels;
PRPackedBool mError;
PRPackedBool mFrameHasNoAlpha;
PRPackedBool mFrameIsHidden;
PRPackedBool mNotifiedDone;
};
#endif // nsPNGDecoder_h__