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99 lines
4.0 KiB
Plaintext
99 lines
4.0 KiB
Plaintext
/* -*- 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 Foundation.
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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 "nsISupports.idl"
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interface nsIInputStream;
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interface imgIContainer;
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[scriptable, uuid(c395d8f1-c616-4a1b-adfd-747b4b1b2cbe)]
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interface imgITools : nsISupports
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{
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/**
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* decodeImageData
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* Caller provides an input stream and mimetype. We read from the stream
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* and decompress it (according to the specified mime type) and return
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* the resulting imgIContainer. (If the caller already has a container,
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* it can be provided as input to be reused).
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*
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* @param aStream
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* An input stream for an encoded image file.
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* @param aMimeType
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* Type of image in the stream.
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* @param aContainer
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* An imgIContainer holding the decoded image. Specify |null| when
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* calling to have one created, otherwise specify a container to
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* be used. It is an error to pass an already-initialized container
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* as aContainer.
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*/
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void decodeImageData(in nsIInputStream aStream,
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in ACString aMimeType,
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inout imgIContainer aContainer);
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/**
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* encodeImage
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* Caller provides an image container, and the mime type it should be
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* encoded to. We return an input stream for the encoded image data.
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*
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* @param aContainer
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* An image container.
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* @param aMimeType
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* Type of encoded image desired (eg "image/png").
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*/
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nsIInputStream encodeImage(in imgIContainer aContainer,
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in ACString aMimeType);
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/**
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* encodeScaledImage
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* Caller provides an image container, and the mime type it should be
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* encoded to. We return an input stream for the encoded image data.
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* The encoded image is scaled to the specified dimensions.
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*
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* @param aContainer
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* An image container.
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* @param aMimeType
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* Type of encoded image desired (eg "image/png").
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* @param aWidth, aHeight
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* The size (in pixels) desired for the resulting image.
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*/
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nsIInputStream encodeScaledImage(in imgIContainer aContainer,
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in ACString aMimeType,
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in long aWidth,
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in long aHeight);
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};
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