2008-01-13 04:15:20 +00:00
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/* -*- 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 Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2007
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Justin Dolske <dolske@mozilla.com> (original author)
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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 "imgTools.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "ImageErrors.h"
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#include "imgIContainer.h"
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#include "imgILoad.h"
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#include "imgIDecoder.h"
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#include "imgIEncoder.h"
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#include "imgIDecoderObserver.h"
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#include "imgIContainerObserver.h"
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#include "gfxContext.h"
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#include "nsStringStream.h"
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#include "nsComponentManagerUtils.h"
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#include "nsWeakReference.h"
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#include "nsIInterfaceRequestorUtils.h"
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/* ========== Utility classes ========== */
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class HelperLoader : public imgILoad,
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public imgIDecoderObserver,
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public nsSupportsWeakReference
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_IMGILOAD
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NS_DECL_IMGIDECODEROBSERVER
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NS_DECL_IMGICONTAINEROBSERVER
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HelperLoader(void);
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private:
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nsCOMPtr<imgIContainer> mContainer;
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};
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NS_IMPL_ISUPPORTS4 (HelperLoader, imgILoad, imgIDecoderObserver, imgIContainerObserver, nsISupportsWeakReference)
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HelperLoader::HelperLoader (void)
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{
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}
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/* Implement imgILoad::image getter */
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NS_IMETHODIMP
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HelperLoader::GetImage(imgIContainer **aImage)
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{
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*aImage = mContainer;
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NS_IF_ADDREF (*aImage);
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return NS_OK;
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}
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/* Implement imgILoad::image setter */
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NS_IMETHODIMP
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HelperLoader::SetImage(imgIContainer *aImage)
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{
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mContainer = aImage;
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return NS_OK;
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}
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/* Implement imgILoad::isMultiPartChannel getter */
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NS_IMETHODIMP
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HelperLoader::GetIsMultiPartChannel(PRBool *aIsMultiPartChannel)
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{
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*aIsMultiPartChannel = PR_FALSE;
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return NS_OK;
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}
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/* Implement imgIDecoderObserver::onStartRequest() */
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NS_IMETHODIMP
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HelperLoader::OnStartRequest(imgIRequest *aRequest)
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{
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return NS_OK;
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}
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/* Implement imgIDecoderObserver::onStartDecode() */
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NS_IMETHODIMP
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HelperLoader::OnStartDecode(imgIRequest *aRequest)
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{
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return NS_OK;
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}
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/* Implement imgIDecoderObserver::onStartContainer() */
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NS_IMETHODIMP
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HelperLoader::OnStartContainer(imgIRequest *aRequest, imgIContainer
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*aContainer)
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{
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return NS_OK;
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}
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/* Implement imgIDecoderObserver::onStartFrame() */
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NS_IMETHODIMP
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Bug 753 - Remove nsIImage, gfxIImageFrame, and their implementations, and expose an equivalent api on imgIContainer. r=roc,josh,bz,longsonr,vlad,karlt,jimm,bsmedberg,mfinkle,peterw,peterv sr=vlad,roc
--HG--
rename : gfx/src/shared/gfxImageFrame.cpp => modules/libpr0n/src/imgFrame.cpp
rename : gfx/src/shared/gfxImageFrame.h => modules/libpr0n/src/imgFrame.h
2009-07-21 01:50:15 +00:00
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HelperLoader::OnStartFrame(imgIRequest *aRequest, PRUint32 aFrame)
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2008-01-13 04:15:20 +00:00
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{
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return NS_OK;
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}
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/* Implement imgIDecoderObserver::onDataAvailable() */
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NS_IMETHODIMP
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Bug 753 - Remove nsIImage, gfxIImageFrame, and their implementations, and expose an equivalent api on imgIContainer. r=roc,josh,bz,longsonr,vlad,karlt,jimm,bsmedberg,mfinkle,peterw,peterv sr=vlad,roc
--HG--
rename : gfx/src/shared/gfxImageFrame.cpp => modules/libpr0n/src/imgFrame.cpp
rename : gfx/src/shared/gfxImageFrame.h => modules/libpr0n/src/imgFrame.h
2009-07-21 01:50:15 +00:00
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HelperLoader::OnDataAvailable(imgIRequest *aRequest, PRBool aCurrentFrame, const nsIntRect * aRect)
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2008-01-13 04:15:20 +00:00
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{
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return NS_OK;
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}
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/* Implement imgIDecoderObserver::onStopFrame() */
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NS_IMETHODIMP
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Bug 753 - Remove nsIImage, gfxIImageFrame, and their implementations, and expose an equivalent api on imgIContainer. r=roc,josh,bz,longsonr,vlad,karlt,jimm,bsmedberg,mfinkle,peterw,peterv sr=vlad,roc
--HG--
rename : gfx/src/shared/gfxImageFrame.cpp => modules/libpr0n/src/imgFrame.cpp
rename : gfx/src/shared/gfxImageFrame.h => modules/libpr0n/src/imgFrame.h
2009-07-21 01:50:15 +00:00
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HelperLoader::OnStopFrame(imgIRequest *aRequest, PRUint32 aFrame)
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2008-01-13 04:15:20 +00:00
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{
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return NS_OK;
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}
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/* Implement imgIDecoderObserver::onStopContainer() */
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NS_IMETHODIMP
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HelperLoader::OnStopContainer(imgIRequest *aRequest, imgIContainer
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*aContainer)
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{
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return NS_OK;
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}
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/* Implement imgIDecoderObserver::onStopDecode() */
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NS_IMETHODIMP
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HelperLoader::OnStopDecode(imgIRequest *aRequest, nsresult status, const
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PRUnichar *statusArg)
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{
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return NS_OK;
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}
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/* Implement imgIDecoderObserver::onStopRequest() */
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NS_IMETHODIMP
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HelperLoader::OnStopRequest(imgIRequest *aRequest, PRBool aIsLastPart)
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{
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return NS_OK;
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}
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/* implement imgIContainerObserver::frameChanged() */
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NS_IMETHODIMP
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Bug 753 - Remove nsIImage, gfxIImageFrame, and their implementations, and expose an equivalent api on imgIContainer. r=roc,josh,bz,longsonr,vlad,karlt,jimm,bsmedberg,mfinkle,peterw,peterv sr=vlad,roc
--HG--
rename : gfx/src/shared/gfxImageFrame.cpp => modules/libpr0n/src/imgFrame.cpp
rename : gfx/src/shared/gfxImageFrame.h => modules/libpr0n/src/imgFrame.h
2009-07-21 01:50:15 +00:00
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HelperLoader::FrameChanged(imgIContainer *aContainer, nsIntRect * aDirtyRect)
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2008-01-13 04:15:20 +00:00
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{
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return NS_OK;
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}
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/* ========== imgITools implementation ========== */
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NS_IMPL_ISUPPORTS1(imgTools, imgITools)
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imgTools::imgTools()
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{
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/* member initializers and constructor code */
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}
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imgTools::~imgTools()
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{
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/* destructor code */
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}
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NS_IMETHODIMP imgTools::DecodeImageData(nsIInputStream* aInStr,
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const nsACString& aMimeType,
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imgIContainer **aContainer)
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{
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nsresult rv;
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// Get an image decoder for our media type
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nsCAutoString decoderCID(
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NS_LITERAL_CSTRING("@mozilla.org/image/decoder;2?type=") + aMimeType);
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nsCOMPtr<imgIDecoder> decoder = do_CreateInstance(decoderCID.get());
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if (!decoder)
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return NS_IMAGELIB_ERROR_NO_DECODER;
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// Init the decoder, we use a small utility class here.
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nsCOMPtr<imgILoad> loader = new HelperLoader();
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if (!loader)
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return NS_ERROR_OUT_OF_MEMORY;
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// If caller provided an existing container, use it.
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if (*aContainer)
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loader->SetImage(*aContainer);
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rv = decoder->Init(loader);
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NS_ENSURE_SUCCESS(rv, rv);
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PRUint32 length;
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rv = aInStr->Available(&length);
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NS_ENSURE_SUCCESS(rv, rv);
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PRUint32 written;
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rv = decoder->WriteFrom(aInStr, length, &written);
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NS_ENSURE_SUCCESS(rv, rv);
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2008-01-23 06:09:21 +00:00
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if (written != length)
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NS_WARNING("decoder didn't eat all of its vegetables");
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2008-01-13 04:15:20 +00:00
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rv = decoder->Flush();
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NS_ENSURE_SUCCESS(rv, rv);
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rv = decoder->Close();
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NS_ENSURE_SUCCESS(rv, rv);
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// If caller didn't provide an existing container, return the new one.
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if (!*aContainer)
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loader->GetImage(aContainer);
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return NS_OK;
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}
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NS_IMETHODIMP imgTools::EncodeImage(imgIContainer *aContainer,
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const nsACString& aMimeType,
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nsIInputStream **aStream)
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{
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return EncodeScaledImage(aContainer, aMimeType, 0, 0, aStream);
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}
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NS_IMETHODIMP imgTools::EncodeScaledImage(imgIContainer *aContainer,
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const nsACString& aMimeType,
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PRInt32 aScaledWidth,
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PRInt32 aScaledHeight,
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nsIInputStream **aStream)
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{
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nsresult rv;
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PRBool doScaling = PR_TRUE;
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PRUint8 *bitmapData;
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PRUint32 bitmapDataLength, strideSize;
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// If no scaled size is specified, we'll just encode the image at its
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// original size (no scaling).
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if (aScaledWidth == 0 && aScaledHeight == 0) {
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doScaling = PR_FALSE;
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} else {
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NS_ENSURE_ARG(aScaledWidth > 0);
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NS_ENSURE_ARG(aScaledHeight > 0);
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}
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// Get an image encoder for the media type
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nsCAutoString encoderCID(
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NS_LITERAL_CSTRING("@mozilla.org/image/encoder;2?type=") + aMimeType);
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nsCOMPtr<imgIEncoder> encoder = do_CreateInstance(encoderCID.get());
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if (!encoder)
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return NS_IMAGELIB_ERROR_NO_ENCODER;
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// Use frame 0 from the image container.
|
Bug 753 - Remove nsIImage, gfxIImageFrame, and their implementations, and expose an equivalent api on imgIContainer. r=roc,josh,bz,longsonr,vlad,karlt,jimm,bsmedberg,mfinkle,peterw,peterv sr=vlad,roc
--HG--
rename : gfx/src/shared/gfxImageFrame.cpp => modules/libpr0n/src/imgFrame.cpp
rename : gfx/src/shared/gfxImageFrame.h => modules/libpr0n/src/imgFrame.h
2009-07-21 01:50:15 +00:00
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nsRefPtr<gfxImageSurface> frame;
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rv = aContainer->CopyCurrentFrame(getter_AddRefs(frame));
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2008-01-13 04:15:20 +00:00
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NS_ENSURE_SUCCESS(rv, rv);
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2008-01-23 02:14:23 +00:00
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if (!frame)
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return NS_ERROR_NOT_AVAILABLE;
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2008-01-13 04:15:20 +00:00
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Bug 753 - Remove nsIImage, gfxIImageFrame, and their implementations, and expose an equivalent api on imgIContainer. r=roc,josh,bz,longsonr,vlad,karlt,jimm,bsmedberg,mfinkle,peterw,peterv sr=vlad,roc
--HG--
rename : gfx/src/shared/gfxImageFrame.cpp => modules/libpr0n/src/imgFrame.cpp
rename : gfx/src/shared/gfxImageFrame.h => modules/libpr0n/src/imgFrame.h
2009-07-21 01:50:15 +00:00
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PRInt32 w = frame->Width(), h = frame->Height();
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2008-01-13 04:15:20 +00:00
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if (!w || !h)
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return NS_ERROR_FAILURE;
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nsRefPtr<gfxImageSurface> dest;
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if (!doScaling) {
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// If we're not scaling the image, use the actual width/height.
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aScaledWidth = w;
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aScaledHeight = h;
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Bug 753 - Remove nsIImage, gfxIImageFrame, and their implementations, and expose an equivalent api on imgIContainer. r=roc,josh,bz,longsonr,vlad,karlt,jimm,bsmedberg,mfinkle,peterw,peterv sr=vlad,roc
--HG--
rename : gfx/src/shared/gfxImageFrame.cpp => modules/libpr0n/src/imgFrame.cpp
rename : gfx/src/shared/gfxImageFrame.h => modules/libpr0n/src/imgFrame.h
2009-07-21 01:50:15 +00:00
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bitmapData = frame->Data();
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if (!bitmapData)
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2008-01-13 04:15:20 +00:00
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return NS_ERROR_FAILURE;
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Bug 753 - Remove nsIImage, gfxIImageFrame, and their implementations, and expose an equivalent api on imgIContainer. r=roc,josh,bz,longsonr,vlad,karlt,jimm,bsmedberg,mfinkle,peterw,peterv sr=vlad,roc
--HG--
rename : gfx/src/shared/gfxImageFrame.cpp => modules/libpr0n/src/imgFrame.cpp
rename : gfx/src/shared/gfxImageFrame.h => modules/libpr0n/src/imgFrame.h
2009-07-21 01:50:15 +00:00
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strideSize = frame->Stride();
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2008-01-13 04:15:20 +00:00
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bitmapDataLength = aScaledHeight * strideSize;
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} else {
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// Prepare to draw a scaled version of the image to a temporary surface...
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// Create a temporary image surface
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dest = new gfxImageSurface(gfxIntSize(aScaledWidth, aScaledHeight),
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gfxASurface::ImageFormatARGB32);
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if (!dest)
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return NS_ERROR_OUT_OF_MEMORY;
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gfxContext ctx(dest);
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// Set scaling
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gfxFloat sw = (double) aScaledWidth / w;
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gfxFloat sh = (double) aScaledHeight / h;
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ctx.Scale(sw, sh);
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// Paint a scaled image
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ctx.SetOperator(gfxContext::OPERATOR_SOURCE);
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Bug 753 - Remove nsIImage, gfxIImageFrame, and their implementations, and expose an equivalent api on imgIContainer. r=roc,josh,bz,longsonr,vlad,karlt,jimm,bsmedberg,mfinkle,peterw,peterv sr=vlad,roc
--HG--
rename : gfx/src/shared/gfxImageFrame.cpp => modules/libpr0n/src/imgFrame.cpp
rename : gfx/src/shared/gfxImageFrame.h => modules/libpr0n/src/imgFrame.h
2009-07-21 01:50:15 +00:00
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ctx.SetSource(frame);
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2008-01-13 04:15:20 +00:00
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ctx.Paint();
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bitmapData = dest->Data();
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strideSize = dest->Stride();
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bitmapDataLength = aScaledHeight * strideSize;
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}
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// Encode the bitmap
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rv = encoder->InitFromData(bitmapData, bitmapDataLength,
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aScaledWidth, aScaledHeight, strideSize,
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imgIEncoder::INPUT_FORMAT_HOSTARGB, EmptyString());
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NS_ENSURE_SUCCESS(rv, rv);
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return CallQueryInterface(encoder, aStream);
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}
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