Revision f559288c74e03e22fbee75e7c2a27dbcbf5bbca3 authored by ffxbld on 09 October 2012, 21:25:05 UTC, committed by ffxbld on 09 October 2012, 21:25:05 UTC
--HG-- branch : MOBILE170_2012100914_RELBRANCH
1 parent 14a970c
imgITools.idl
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
interface nsIInputStream;
interface imgIContainer;
[scriptable, uuid(8e16f39e-7012-46bd-aa22-2a7a3265608f)]
interface imgITools : nsISupports
{
/**
* decodeImageData
* Caller provides an input stream and mimetype. We read from the stream
* and decompress it (according to the specified mime type) and return
* the resulting imgIContainer. (If the caller already has a container,
* it can be provided as input to be reused).
*
* @param aStream
* An input stream for an encoded image file.
* @param aMimeType
* Type of image in the stream.
* @param aContainer
* An imgIContainer holding the decoded image. Specify |null| when
* calling to have one created, otherwise specify a container to
* be used. It is an error to pass an already-initialized container
* as aContainer.
*/
void decodeImageData(in nsIInputStream aStream,
in ACString aMimeType,
inout imgIContainer aContainer);
/**
* encodeImage
* Caller provides an image container, and the mime type it should be
* encoded to. We return an input stream for the encoded image data.
*
* @param aContainer
* An image container.
* @param aMimeType
* Type of encoded image desired (eg "image/png").
* @param outputOptions
* Encoder-specific output options.
*/
nsIInputStream encodeImage(in imgIContainer aContainer,
in ACString aMimeType,
[optional] in AString outputOptions);
/**
* encodeScaledImage
* Caller provides an image container, and the mime type it should be
* encoded to. We return an input stream for the encoded image data.
* The encoded image is scaled to the specified dimensions.
*
* @param aContainer
* An image container.
* @param aMimeType
* Type of encoded image desired (eg "image/png").
* @param aWidth, aHeight
* The size (in pixels) desired for the resulting image. Specify 0 to
* use the given image's width or height. Values must be >= 0.
* @param outputOptions
* Encoder-specific output options.
*/
nsIInputStream encodeScaledImage(in imgIContainer aContainer,
in ACString aMimeType,
in long aWidth,
in long aHeight,
[optional] in AString outputOptions);
/**
* encodeCroppedImage
* Caller provides an image container, and the mime type it should be
* encoded to. We return an input stream for the encoded image data.
* The encoded image is cropped to the specified dimensions.
*
* The given offset and size must not exceed the image bounds.
*
* @param aContainer
* An image container.
* @param aMimeType
* Type of encoded image desired (eg "image/png").
* @param aOffsetX, aOffsetY
* The crop offset (in pixels). Values must be >= 0.
* @param aWidth, aHeight
* The size (in pixels) desired for the resulting image. Specify 0 to
* use the given image's width or height. Values must be >= 0.
* @param outputOptions
* Encoder-specific output options.
*/
nsIInputStream encodeCroppedImage(in imgIContainer aContainer,
in ACString aMimeType,
in long aOffsetX,
in long aOffsetY,
in long aWidth,
in long aHeight,
[optional] in AString outputOptions);
};
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