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95 lines
3.5 KiB
C++
95 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Oracle Corporation code.
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*
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* The Initial Developer of the Original Code is Oracle Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Stuart Parmenter <pavlov@pavlov.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "imgIEncoder.h"
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#include <png.h>
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#define NS_PNGENCODER_CID \
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{ /* 38d1592e-b81e-432b-86f8-471878bbfe07 */ \
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0x38d1592e, \
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0xb81e, \
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0x432b, \
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{0x86, 0xf8, 0x47, 0x18, 0x78, 0xbb, 0xfe, 0x07} \
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}
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// Provides PNG encoding functionality. Use InitFromData() to do the
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// encoding. See that function definition for encoding options.
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class nsPNGEncoder : public imgIEncoder
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_IMGIENCODER
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NS_DECL_NSIINPUTSTREAM
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nsPNGEncoder();
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private:
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~nsPNGEncoder();
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protected:
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nsresult ParseOptions(const nsAString& aOptions,
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PRBool* useTransparency,
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PRBool* skipFirstFrame,
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PRUint32* numAnimatedFrames,
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PRUint32* numIterations,
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PRUint32* frameDispose,
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PRUint32* frameBlend,
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PRUint32* frameDelay,
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PRUint32* offsetX,
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PRUint32* offsetY);
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void ConvertHostARGBRow(const PRUint8* aSrc, PRUint8* aDest,
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PRUint32 aPixelWidth, PRBool aUseTransparency);
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void StripAlpha(const PRUint8* aSrc, PRUint8* aDest,
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PRUint32 aPixelWidth);
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static void ErrorCallback(png_structp png_ptr, png_const_charp warning_msg);
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static void WriteCallback(png_structp png, png_bytep data, png_size_t size);
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png_struct* mPNG;
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png_info* mPNGinfo;
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PRBool mIsAnimation;
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// image buffer
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PRUint8* mImageBuffer;
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PRUint32 mImageBufferSize;
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PRUint32 mImageBufferUsed;
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PRUint32 mImageBufferReadPoint;
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};
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