зеркало из https://github.com/mozilla/gecko-dev.git
new. decoder. pnunn
This commit is contained in:
pnunn%netscape.com
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143c1e35bc
Коммит
0cb075d473
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 1.0 (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"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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/* jpeg.h */
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extern int il_jpeg_init(il_container *ic);
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extern int il_jpeg_write(il_container *, const uint8 *, int32);
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extern void il_jpeg_complete(il_container *ic);
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extern unsigned int il_jpeg_write_ready(il_container *ic);
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extern void il_jpeg_abort(il_container *ic);
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http:/www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* -*- Mode: C; tab-width: 4 -*-
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* nsJPGDecoder.cpp --- interface to jpg decoder
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*/
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#include "nsJPGCallback.h"
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/* callbks: */
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/*-------------class----------*/
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NS_IMETHODIMP JPGCallbk::AddRef()
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{
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NS_INIT_REFCNT();
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return NS_OK;
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}
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NS_IMETHODIMP JPGCallbk::Release()
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{
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return NS_OK;
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}
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NS_IMETHODIMP JPGCallbk::QueryInterface(const nsIID& aIID, void** aResult)
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{
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if (NULL == aResult) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(kImgDCallbkIID)) {
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*aResult = (void*) this;
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NS_INIT_REFCNT();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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/*-----------------------------*/
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http:/www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* -*- Mode: C; tab-width: 4 -*-
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* nsJPGDecoder.cpp --- interface to gif decoder
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*/
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#include "if_struct.h"
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#include "jpeg.h"
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#include "prmem.h"
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#include "merrors.h"
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#include "dllcompat.h"
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#include "nsJPGDecoder.h"
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#include "nsImgDecCID.h"
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#include "nsIImgDecoder.h" /* interface class */
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#include "nsImgDecoder.h" /* factory */
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#include "nscore.h"
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/*--- needed for autoregistry ---*/
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#include "nsIComponentManager.h"
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#include "nsIServiceManager.h"
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#include "nsCOMPtr.h"
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PR_BEGIN_EXTERN_C
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extern int MK_OUT_OF_MEMORY;
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PR_END_EXTERN_C
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/*-----------class----------------*/
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class JPGDecoder : public nsIImgDecoder
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{
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public:
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JPGDecoder(il_container* aContainer);
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~JPGDecoder();
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NS_DECL_ISUPPORTS
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/* stream */
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NS_IMETHOD ImgDInit();
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NS_IMETHOD ImgDWriteReady();
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NS_IMETHOD ImgDWrite(const unsigned char *buf, int32 len);
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NS_IMETHOD ImgDComplete();
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NS_IMETHOD ImgDAbort();
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il_container *SetContainer(il_container *ic){mContainer = ic; return ic;}
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il_container *GetContainer() {return mContainer;}
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private:
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il_container* mContainer;
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};
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/*-------------------------------------------------*/
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JPGDecoder::JPGDecoder(il_container* aContainer)
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{
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NS_INIT_REFCNT();
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mContainer = aContainer;
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};
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JPGDecoder::~JPGDecoder(void)
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{
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NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
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};
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NS_IMETHODIMP
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JPGDecoder::QueryInterface(const nsIID& aIID, void** aInstPtr)
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{
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if (NULL == aInstPtr) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(kJPGDecoderIID) ||
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aIID.Equals(kImgDecoderIID) ||
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aIID.Equals(kISupportsIID)) {
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*aInstPtr = (void*) this;
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NS_INIT_REFCNT();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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/*----------------------------------for autoregistration ----*/
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static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
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extern "C" NS_EXPORT nsresult
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NSRegisterSelf(nsISupports* aServMgr, const char *path)
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{
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nsresult rv;
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/**/
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nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
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if (NS_FAILED(rv)) return rv;
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nsIComponentManager* compMgr;
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rv = servMgr->GetService(kComponentManagerCID,
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nsIComponentManager::GetIID(),
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(nsISupports**)&compMgr);
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if (NS_FAILED(rv)) return rv;
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if ((rv = nsRepository::RegisterComponent(kJPGDecoderCID, "Netscape JPGDec", "component://netscape/image/decoder&type=image/jpeg", path, PR_TRUE, PR_TRUE)
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) != NS_OK) {
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return rv;
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}
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(void)servMgr->ReleaseService(kComponentManagerCID, compMgr);
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return rv;
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}
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extern "C" NS_EXPORT nsresult NSUnregisterSelf(nsISupports* aServMgr, const char *path)
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{
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nsresult rv;
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nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
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if (NS_FAILED(rv)) return rv;
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nsIComponentManager* compMgr;
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rv = servMgr->GetService(kComponentManagerCID,
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nsIComponentManager::GetIID(),
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(nsISupports**)&compMgr);
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if (NS_FAILED(rv)) return rv;
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rv = compMgr->UnregisterFactory(kJPGDecoderCID, path);
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(void)servMgr->ReleaseService(kComponentManagerCID, compMgr);
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return rv;
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}
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/*--------------------*/
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NS_IMETHODIMP
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JPGDecoder::AddRef()
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{
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NS_INIT_REFCNT();
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return NS_OK;
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}
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NS_IMETHODIMP
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JPGDecoder::Release()
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{
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return NS_OK;
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}
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/*-----------class----------------*/
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class nsJPGDecFactory : public nsIFactory
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{
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public:
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NS_DECL_ISUPPORTS
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nsJPGDecFactory(const nsCID &aClass);
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~nsJPGDecFactory();
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NS_IMETHOD CreateInstance(nsISupports *aOuter,
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REFNSIID aIID,
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void **aResult);
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NS_IMETHOD LockFactory(PRBool aLock);
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protected:
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private:
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nsCID mClassID;
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il_container *mContainer;
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};
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/*-----------------------------------------*/
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nsJPGDecFactory* gFactory = NULL;
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NS_IMPL_ISUPPORTS(nsJPGDecFactory, kIFactoryIID);
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nsJPGDecFactory::nsJPGDecFactory(const nsCID &aClass)
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{
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NS_INIT_REFCNT();
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mClassID = aClass;
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}
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nsJPGDecFactory::~nsJPGDecFactory(void)
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{
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NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
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}
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NS_IMETHODIMP
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nsJPGDecFactory::CreateInstance(nsISupports *aOuter,
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const nsIID &aIID,
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void **ppv)
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{
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JPGDecoder *jpgdec = NULL;
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*ppv = NULL;
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il_container* ic = NULL;
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if (aOuter && !aIID.Equals(kISupportsIID))
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return NS_NOINTERFACE;
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ic = new il_container();
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jpgdec = new JPGDecoder(ic);
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nsresult res = jpgdec->QueryInterface(aIID,(void**)ppv);
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//interface is other than nsISupports and gifdecoder
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if (NS_FAILED(res)) {
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*ppv = NULL;
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delete jpgdec;
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}
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return res;
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}
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NS_METHOD
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nsJPGDecFactory::LockFactory(PRBool aLock)
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{
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return NS_OK;
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}
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extern "C" NS_EXPORT nsresult
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NSGetFactory(nsISupports* serviceMgr,
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const nsCID &aClass,
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const char *aClassName,
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const char *aProgID,
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nsIFactory **aFactory)
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{
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if( !aClass.Equals(kJPGDecoderCID))
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return NS_ERROR_FACTORY_NOT_REGISTERED;
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if( gFactory == NULL){
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gFactory = new nsJPGDecFactory(aClass);
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if( gFactory == NULL)
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return NS_ERROR_OUT_OF_MEMORY;
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gFactory->AddRef(); //for global
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}
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gFactory->AddRef(); //for client
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*aFactory = gFactory;
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return NS_OK;
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}
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/*------------------------------------------------------*/
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/* api functions
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*/
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/*------------------------------------------------------*/
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NS_IMETHODIMP
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JPGDecoder::ImgDInit()
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{
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if(mContainer != NULL) {
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return(il_jpeg_init(mContainer));
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}
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else {
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return nsnull;
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}
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}
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NS_IMETHODIMP
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JPGDecoder::ImgDWriteReady()
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{ /* IL_StreamWriteReady needs a return 1 */
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return 1;
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}
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NS_IMETHODIMP
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JPGDecoder::ImgDWrite(const unsigned char *buf, int32 len)
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{
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if( mContainer != NULL ) {
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return(il_jpeg_write(mContainer, buf,len));
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}
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return 0;
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}
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NS_IMETHODIMP
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JPGDecoder::ImgDComplete()
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{
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if( mContainer != NULL ) {
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il_jpeg_complete(mContainer);
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}
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return 0;
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}
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NS_IMETHODIMP
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JPGDecoder::ImgDAbort()
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{
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if( mContainer != NULL ) {
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il_jpeg_abort(mContainer);
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}
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return 0;
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}
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