mirror of
https://github.com/mozilla/gecko-dev.git
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134 lines
4.8 KiB
C++
134 lines
4.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 WIDGET_WINDOWS_WINDOWSSTMCPROVIDER_H_
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#define WIDGET_WINDOWS_WINDOWSSTMCPROVIDER_H_
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#ifndef __MINGW32__
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# include <functional>
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# include <Windows.Media.h>
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# include <wrl.h>
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# include "mozilla/dom/FetchImageHelper.h"
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# include "mozilla/dom/MediaController.h"
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# include "mozilla/dom/MediaControlKeySource.h"
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# include "mozilla/UniquePtr.h"
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using ISMTC = ABI::Windows::Media::ISystemMediaTransportControls;
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using SMTCProperty = ABI::Windows::Media::SystemMediaTransportControlsProperty;
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using ISMTCDisplayUpdater =
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ABI::Windows::Media::ISystemMediaTransportControlsDisplayUpdater;
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using ABI::Windows::Foundation::IAsyncOperation;
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using ABI::Windows::Storage::Streams::IDataWriter;
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using ABI::Windows::Storage::Streams::IRandomAccessStream;
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using ABI::Windows::Storage::Streams::IRandomAccessStreamReference;
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using Microsoft::WRL::ComPtr;
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class WindowsSMTCProvider final : public mozilla::dom::MediaControlKeySource {
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WindowsSMTCProvider, override)
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public:
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WindowsSMTCProvider();
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bool IsOpened() const override;
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bool Open() override;
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void Close() override;
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void SetPlaybackState(
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mozilla::dom::MediaSessionPlaybackState aState) override;
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void SetMediaMetadata(
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const mozilla::dom::MediaMetadataBase& aMetadata) override;
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void SetSupportedMediaKeys(const MediaKeysArray& aSupportedKeys) override;
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void SetPositionState(
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const mozilla::Maybe<mozilla::dom::PositionState>& aState) override;
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private:
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~WindowsSMTCProvider();
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void UnregisterEvents();
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bool RegisterEvents();
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void OnButtonPressed(mozilla::dom::MediaControlKey aKey) const;
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// Enable the SMTC interface
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bool EnableControl(bool aEnabled) const;
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// Sets the play, pause, next, previous, seekto buttons on the SMTC interface
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// by mSupportedKeys
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bool UpdateButtons();
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bool IsKeySupported(mozilla::dom::MediaControlKey aKey) const;
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bool EnableKey(mozilla::dom::MediaControlKey aKey, bool aEnable) const;
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void OnPositionChangeRequested(double aPosition) const;
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bool InitDisplayAndControls();
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// Sets the Metadata for the currently playing media and sets the playback
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// type to "MUSIC"
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bool SetMusicMetadata(const nsString& aArtist, const nsString& aTitle);
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// Sets one of the artwork to the SMTC interface asynchronously
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void LoadThumbnail(const nsTArray<mozilla::dom::MediaImage>& aArtwork);
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// Stores the image at index aIndex of the mArtwork to the Thumbnail
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// asynchronously
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void LoadImageAtIndex(const size_t aIndex);
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// Stores the raw binary data of an image to mImageStream and set it to the
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// Thumbnail asynchronously
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void LoadImage(const char* aImageData, uint32_t aDataSize);
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// Sets the Thumbnail to the image stored in mImageStream
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bool SetThumbnail(const nsAString& aUrl);
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void ClearThumbnail();
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bool UpdateThumbnail(const nsAString& aUrl);
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void CancelPendingStoreAsyncOperation() const;
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void ClearMetadata();
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bool mInitialized = false;
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// A bit table indicating what keys are enabled
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uint32_t mSupportedKeys = 0;
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ComPtr<ISMTC> mControls;
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ComPtr<ISMTCDisplayUpdater> mDisplay;
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// Use mImageDataWriter to write the binary data of image into mImageStream
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// and refer the image by mImageStreamReference and then set it to the SMTC
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// interface
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ComPtr<IDataWriter> mImageDataWriter;
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ComPtr<IRandomAccessStream> mImageStream;
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ComPtr<IRandomAccessStreamReference> mImageStreamReference;
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ComPtr<IAsyncOperation<unsigned int>> mStoreAsyncOperation;
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// mThumbnailUrl is the url of the current Thumbnail
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// mProcessingUrl is the url that is being processed. The process starts from
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// fetching an image from the url and then storing the fetched image to the
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// mImageStream. If mProcessingUrl is not empty, it means there is an image is
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// in processing
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// mThumbnailUrl and mProcessingUrl won't be set at the same time and they can
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// only be touched on main thread
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nsString mThumbnailUrl;
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nsString mProcessingUrl;
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// mArtwork can only be used in main thread in case of data racing
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CopyableTArray<mozilla::dom::MediaImage> mArtwork;
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size_t mNextImageIndex;
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mozilla::UniquePtr<mozilla::dom::FetchImageHelper> mImageFetcher;
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mozilla::MozPromiseRequestHolder<mozilla::dom::ImagePromise>
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mImageFetchRequest;
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HWND mWindow; // handle to the invisible window
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// EventRegistrationTokens are used to have a handle on a callback (to remove
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// it again)
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EventRegistrationToken mButtonPressedToken;
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EventRegistrationToken mSeekRegistrationToken;
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};
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#endif // __MINGW32__
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#endif // WIDGET_WINDOWS_WINDOWSSTMCPROVIDER_H_
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