mirror of
https://github.com/rn10950/RetroZilla.git
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130 lines
4.1 KiB
C++
130 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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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 mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Chris Saari <saari@netscape.com>
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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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#ifndef _nsGIFDecoder2_h
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#define _nsGIFDecoder2_h
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#include "nsCOMPtr.h"
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#include "imgIDecoder.h"
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#include "imgContainerGIF.h"
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#include "imgIDecoderObserver.h"
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#include "gfxIImageFrame.h"
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#include "GIF2.h"
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#define NS_GIFDECODER2_CID \
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{ /* 797bec5a-1dd2-11b2-a7f8-ca397e0179c4 */ \
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0x797bec5a, \
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0x1dd2, \
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0x11b2, \
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{0xa7, 0xf8, 0xca, 0x39, 0x7e, 0x01, 0x79, 0xc4} \
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}
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//////////////////////////////////////////////////////////////////////
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// nsGIFDecoder2 Definition
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class nsGIFDecoder2 : public imgIDecoder
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_IMGIDECODER
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nsGIFDecoder2();
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~nsGIFDecoder2();
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nsresult ProcessData(unsigned char *data, PRUint32 count, PRUint32 *_retval);
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NS_METHOD FlushImageData();
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/* These functions will be called when the decoder has a decoded
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* rows, frame size information, etc. */
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static int BeginGIF(
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void* aClientData,
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PRUint32 aLogicalScreenWidth,
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PRUint32 aLogicalScreenHeight,
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PRUint8 aBackgroundRGBIndex);
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static int EndGIF(
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void* aClientData,
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int aAnimationLoopCount);
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static int BeginImageFrame(
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void* aClientData,
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PRUint32 aFrameNumber, /* Frame number, 1-n */
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PRUint32 aFrameXOffset, /* X offset in logical screen */
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PRUint32 aFrameYOffset, /* Y offset in logical screen */
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PRUint32 aFrameWidth,
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PRUint32 aFrameHeight);
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static int EndImageFrame(
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void* aClientData,
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PRUint32 aFrameNumber,
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PRUint32 aDelayTimeout);
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static int HaveDecodedRow(
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void* aClientData,
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PRUint8* aRowBufPtr, /* Pointer to single scanline temporary buffer */
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int aRow, /* Row number? */
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int aDuplicateCount, /* Number of times to duplicate the row? */
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int aInterlacePass);
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private:
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nsCOMPtr<imgIContainer> mImageContainer;
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nsCOMPtr<gfxIImageFrame> mImageFrame;
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nsCOMPtr<imgIDecoderObserver> mObserver; // this is just qi'd from mRequest for speed
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PRInt32 mCurrentRow;
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PRInt32 mLastFlushedRow;
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gif_struct *mGIFStruct;
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PRUint8 *mAlphaLine;
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PRUint8 *mRGBLine;
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PRUint32 mRGBLineMaxSize;
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PRUint32 mAlphaLineMaxSize;
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PRUint8 mBackgroundRGBIndex;
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PRUint8 mCurrentPass;
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PRUint8 mLastFlushedPass;
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PRPackedBool mGIFOpen;
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};
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void nsGifShutdown();
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#endif
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