зеркало из https://github.com/mozilla/pjs.git
144 строки
3.5 KiB
C++
144 строки
3.5 KiB
C++
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 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 Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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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) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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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 NPL, 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 NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* nsGIFDecoder.cpp --- interface to gif decoder
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*/
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#include "nsGIFDecoder.h"
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#include "nsCOMPtr.h"
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//////////////////////////////////////////////////////////////////////
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// GIF Decoder Implementation
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NS_IMPL_ISUPPORTS1(GIFDecoder, nsIImgDecoder);
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GIFDecoder::GIFDecoder(il_container* aContainer)
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{
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NS_INIT_REFCNT();
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ilContainer = aContainer;
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}
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GIFDecoder::~GIFDecoder(void)
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{
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}
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NS_METHOD
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GIFDecoder::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
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{
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nsresult rv;
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if (aOuter) return NS_ERROR_NO_AGGREGATION;
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il_container *ic = new il_container();
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if (!ic) return NS_ERROR_OUT_OF_MEMORY;
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GIFDecoder *decoder = new GIFDecoder(ic);
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if (!decoder) {
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delete ic;
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return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_ADDREF(decoder);
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rv = decoder->QueryInterface(aIID, aResult);
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NS_RELEASE(decoder);
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/* why are we creating and destroying this object for no reason? */
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delete ic; /* is a place holder */
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return rv;
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}
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NS_IMETHODIMP
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GIFDecoder::ImgDInit()
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{
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PRBool ret=PR_FALSE;
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if(ilContainer != NULL) {
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ret=il_gif_init(ilContainer);
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}
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if(ret)
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return NS_OK;
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else
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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GIFDecoder::ImgDWriteReady(PRUint32 *max_read)
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{
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if(ilContainer != NULL) {
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*max_read = il_gif_write_ready(ilContainer);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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GIFDecoder::ImgDWrite(const unsigned char *buf, int32 len)
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{
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int ret = 0;
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if( ilContainer != NULL ) {
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ret = il_gif_write(ilContainer, buf,len);
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if(ret != 0)
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return NS_ERROR_FAILURE;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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GIFDecoder::ImgDComplete()
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{
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if( ilContainer != NULL ) {
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il_gif_complete(ilContainer);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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GIFDecoder::ImgDAbort()
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{
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if( ilContainer != NULL ) {
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il_gif_abort(ilContainer);
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}
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return NS_OK;
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}
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