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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SYSTEM_MEDIA_CONTROLS_SYSTEM_MEDIA_CONTROLS_H_
#define COMPONENTS_SYSTEM_MEDIA_CONTROLS_SYSTEM_MEDIA_CONTROLS_H_
#include <string>
#include "base/component_export.h"
#include "services/media_session/public/cpp/media_position.h"
#include "third_party/skia/include/core/SkBitmap.h"
namespace system_media_controls {
class SystemMediaControlsObserver;
// OSes often provide a system-level media controls API (e.g. Media Player
// Remote Interfacing Specification on Linux or System Media Transport Controls
// on Windows). These tend to have similar APIs to each other.
// SystemMediaControls is a platform-agnostic API that clients can use to
// interface with the operating system's media controls API if it exists.
class COMPONENT_EXPORT(SYSTEM_MEDIA_CONTROLS) SystemMediaControls {
public:
enum class PlaybackStatus {
kPlaying,
kPaused,
kStopped,
};
// |window| used by Windows OS for web app (dPWA) connections.
static std::unique_ptr<SystemMediaControls> Create(
const std::string& product_name,
int window = -1);
virtual ~SystemMediaControls() = default;
virtual void AddObserver(SystemMediaControlsObserver* observer) = 0;
virtual void RemoveObserver(SystemMediaControlsObserver* observer) = 0;
// Enable or disable the service.
virtual void SetEnabled(bool enabled) = 0;
// Enable or disable specific controls.
virtual void SetIsNextEnabled(bool value) = 0;
virtual void SetIsPreviousEnabled(bool value) = 0;
virtual void SetIsPlayPauseEnabled(bool value) = 0;
virtual void SetIsStopEnabled(bool value) = 0;
virtual void SetIsSeekToEnabled(bool value) {}
// Setters for metadata.
virtual void SetPlaybackStatus(PlaybackStatus value) = 0;
virtual void SetID(const std::string* value) {}
virtual void SetTitle(const std::u16string& value) = 0;
virtual void SetArtist(const std::u16string& value) = 0;
virtual void SetAlbum(const std::u16string& value) = 0;
virtual void SetThumbnail(const SkBitmap& bitmap) = 0;
virtual void SetPosition(const media_session::MediaPosition& position) {}
// Helpers for metadata
virtual void ClearThumbnail() = 0;
virtual void ClearMetadata() = 0;
virtual void UpdateDisplay() = 0;
};
} // namespace system_media_controls
#endif // COMPONENTS_SYSTEM_MEDIA_CONTROLS_SYSTEM_MEDIA_CONTROLS_H_
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