forked from mirrors/gecko-dev
265e672179
# ignore-this-changeset --HG-- extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_ImageBitmapFormatUtils_h
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#define mozilla_dom_ImageBitmapFormatUtils_h
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#include "mozilla/UniquePtr.h"
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#include "nsTArrayForwardDeclare.h"
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namespace mozilla {
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namespace layers {
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class Image;
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}
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class ErrorResult;
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namespace dom {
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struct ChannelPixelLayout;
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enum class ImageBitmapFormat : uint8_t;
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typedef nsTArray<ChannelPixelLayout> ImagePixelLayout;
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/*
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* ImageUtils is a wrapper around layers::Image. It provides three unified
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* methods to all sub-classes of layers::Image, which are:
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*
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* (1) GetFormat() converts the image's format into ImageBitmapFormat enum.
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* (2) GetBufferLength() returns the number of bytes that are used to store
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* the image's underlying raw data.
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*
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* In theory, the functionalities of this class could be merged into the
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* interface of layers::Image. However, this is designed as a isolated wrapper
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* because we don't want to pollute the layers::Image's interface with methods
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* that are only meaningful to the ImageBitmap.
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*/
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class ImageUtils {
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public:
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class Impl;
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ImageUtils() = delete;
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ImageUtils(const ImageUtils&) = delete;
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ImageUtils(ImageUtils&&) = delete;
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ImageUtils& operator=(const ImageUtils&) = delete;
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ImageUtils& operator=(ImageUtils&&) = delete;
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explicit ImageUtils(layers::Image* aImage);
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~ImageUtils();
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ImageBitmapFormat GetFormat() const;
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uint32_t GetBufferLength() const;
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protected:
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Impl* mImpl;
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};
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} // namespace dom
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} // namespace mozilla
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#endif /* mozilla_dom_ImageBitmapFormatUtils_h */
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