2ba4663c86
Depends on D152494 Differential Revision: https://phabricator.services.mozilla.com/D152495
133 lines
3.6 KiB
C++
133 lines
3.6 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_WEBCODECS_WEBCODECSUTILS_H
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#define MOZILLA_DOM_WEBCODECS_WEBCODECSUTILS_H
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#include <tuple>
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#include "ErrorList.h"
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#include "js/TypeDecls.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/Result.h"
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#include "mozilla/Span.h"
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#include "mozilla/dom/BindingDeclarations.h"
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#include "mozilla/dom/Nullable.h"
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#include "mozilla/dom/UnionTypes.h"
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namespace mozilla {
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namespace gfx {
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enum class ColorRange : uint8_t;
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enum class ColorSpace2 : uint8_t;
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enum class SurfaceFormat : int8_t;
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enum class TransferFunction : uint8_t;
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enum class YUVColorSpace : uint8_t;
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} // namespace gfx
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namespace dom {
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/*
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* The followings are helpers for WebCodecs methods
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*/
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nsTArray<nsCString> GuessContainers(const nsAString& aCodec);
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/*
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* Below are helpers for conversion among Maybe, Optional, and Nullable.
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*/
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template <typename T>
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Maybe<T> OptionalToMaybe(const Optional<T>& aOptional) {
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if (aOptional.WasPassed()) {
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return Some(aOptional.Value());
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}
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return Nothing();
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}
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template <typename T>
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const T* OptionalToPointer(const Optional<T>& aOptional) {
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return aOptional.WasPassed() ? &aOptional.Value() : nullptr;
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}
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template <typename T>
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Maybe<T> NullableToMaybe(const Nullable<T>& aNullable) {
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if (!aNullable.IsNull()) {
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return Some(aNullable.Value());
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}
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return Nothing();
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}
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template <typename T>
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Nullable<T> MaybeToNullable(const Maybe<T>& aOptional) {
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if (aOptional.isSome()) {
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return Nullable<T>(aOptional.value());
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}
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return Nullable<T>();
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}
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/*
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* Below are helpers to operate ArrayBuffer or ArrayBufferView.
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*/
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Result<Span<uint8_t>, nsresult> GetSharedArrayBufferData(
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const MaybeSharedArrayBufferViewOrMaybeSharedArrayBuffer& aBuffer);
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Result<Span<uint8_t>, nsresult> GetSharedArrayBufferData(
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const OwningMaybeSharedArrayBufferViewOrMaybeSharedArrayBuffer& aBuffer);
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Result<Ok, nsresult> CloneBuffer(
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JSContext* aCx,
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OwningMaybeSharedArrayBufferViewOrMaybeSharedArrayBuffer& aDest,
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const OwningMaybeSharedArrayBufferViewOrMaybeSharedArrayBuffer& aSrc);
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/*
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* The following are utilities to convert between VideoColorSpace values to
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* gfx's values.
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*/
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enum class VideoColorPrimaries : uint8_t;
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enum class VideoMatrixCoefficients : uint8_t;
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enum class VideoTransferCharacteristics : uint8_t;
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gfx::ColorRange ToColorRange(bool aIsFullRange);
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gfx::YUVColorSpace ToColorSpace(VideoMatrixCoefficients aMatrix);
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gfx::TransferFunction ToTransferFunction(
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VideoTransferCharacteristics aTransfer);
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gfx::ColorSpace2 ToPrimaries(VideoColorPrimaries aPrimaries);
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bool ToFullRange(const gfx::ColorRange& aColorRange);
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Maybe<VideoMatrixCoefficients> ToMatrixCoefficients(
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const gfx::YUVColorSpace& aColorSpace);
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Maybe<VideoTransferCharacteristics> ToTransferCharacteristics(
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const gfx::TransferFunction& aTransferFunction);
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Maybe<VideoColorPrimaries> ToPrimaries(const gfx::ColorSpace2& aColorSpace);
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/*
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* The following are utilities to convert from gfx's formats to
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* VideoPixelFormats.
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*/
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enum class ImageBitmapFormat : uint8_t;
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enum class VideoPixelFormat : uint8_t;
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Maybe<VideoPixelFormat> SurfaceFormatToVideoPixelFormat(
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gfx::SurfaceFormat aFormat);
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Maybe<VideoPixelFormat> ImageBitmapFormatToVideoPixelFormat(
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ImageBitmapFormat aFormat);
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} // namespace dom
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} // namespace mozilla
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#endif // MOZILLA_DOM_WEBCODECS_WEBCODECSUTILS_H
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