media_session_impl.h | Explore in Territory

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_IMPL_H_
#define CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_IMPL_H_

#include <stddef.h>

#include <map>
#include <optional>
#include <set>
#include <vector>

#include "base/containers/flat_map.h"
#include "base/containers/flat_set.h"
#include "base/containers/id_map.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/raw_ptr_exclusion.h"
#include "base/memory/weak_ptr.h"
#include "base/timer/timer.h"
#include "build/build_config.h"
#include "content/browser/media/session/audio_focus_delegate.h"
#include "content/browser/media/session/media_session_uma_helper.h"
#include "content/common/content_export.h"
#include "content/public/browser/media_session.h"
#include "content/public/browser/page_user_data.h"
#include "content/public/browser/presentation_observer.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/bindings/remote_set.h"
#include "services/media_session/public/mojom/audio_focus.mojom.h"
#include "third_party/blink/public/mojom/favicon/favicon_url.mojom.h"
#include "third_party/blink/public/mojom/mediasession/media_session.mojom.h"

#if BUILDFLAG(IS_ANDROID)
#include "base/android/scoped_java_ref.h"
#endif  // BUILDFLAG(IS_ANDROID)

namespace media_session {
struct MediaMetadata;
}  // namespace media_session

namespace content {

class AudioFocusManagerTest;
class MediaSessionImplServiceRoutingTest;
class MediaSessionImplServiceRoutingThrottleTest;
class MediaSessionImplStateObserver;
class MediaSessionImplVisibilityBrowserTest;
class MediaSessionPlayerObserver;
class MediaSessionServiceImpl;
class MediaSessionServiceImplBrowserTest;

#if BUILDFLAG(IS_ANDROID)
class MediaSessionAndroid;
#endif  // BUILDFLAG(IS_ANDROID)

// MediaSessionImpl is the implementation of MediaSession. It manages the media
// session and audio focus for a given WebContents. It is requesting the audio
// focus, pausing when requested by the system and dropping it on demand. The
// audio focus can be of two types: Transient or Content. A Transient audio
// focus will allow other players to duck instead of pausing and will be
// declared as temporary to the system. A Content audio focus will not be
// declared as temporary and will not allow other players to duck. If a given
// WebContents can only have one audio focus at a time, it will be Content in
// case of Transient and Content audio focus are both requested.
// TODO(thakis,mlamouri): MediaSessionImpl isn't CONTENT_EXPORT'd because it
// creates complicated build issues with WebContentsUserData being a
// non-exported template, see https://crbug.com/589840. As a result, the class
// uses CONTENT_EXPORT for methods that are being used from tests.
// CONTENT_EXPORT should be moved back to the class when the Windows build will
// work with it.
class MediaSessionImpl : public MediaSession,
                         public WebContentsObserver,
                         public WebContentsUserData<MediaSessionImpl>,
                         public PresentationObserver { … };

}  // namespace content

#endif  // CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_IMPL_H_
chromium/content/browser/media/session/media_session_impl.h
