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/*
* Copyright (C) 2011 Ericsson AB. All rights reserved.
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of Ericsson nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_MEDIASTREAM_MEDIA_STREAM_DESCRIPTOR_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_MEDIASTREAM_MEDIA_STREAM_DESCRIPTOR_H_
#include "third_party/blink/renderer/platform/mediastream/media_stream_component.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_source.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
class WebMediaStreamObserver;
class PLATFORM_EXPORT MediaStreamDescriptorClient
: public GarbageCollectedMixin {
public:
// Describes how to fire events. Events that are fired immediately execute
// JavaScript synchronously, which could change the object's state. Events
// that are scheduled to be fired fire at the end of the task execution cycle.
enum class DispatchEventTiming {
kImmediately,
kScheduled,
};
virtual ~MediaStreamDescriptorClient() = default;
virtual void AddTrackByComponentAndFireEvents(MediaStreamComponent*,
DispatchEventTiming) = 0;
virtual void RemoveTrackByComponentAndFireEvents(MediaStreamComponent*,
DispatchEventTiming) = 0;
void Trace(Visitor* visitor) const override {}
};
class PLATFORM_EXPORT MediaStreamDescriptor final
: public GarbageCollected<MediaStreamDescriptor> {
private:
static int GenerateUniqueId();
public:
MediaStreamDescriptor(const MediaStreamComponentVector& audio_components,
const MediaStreamComponentVector& video_components);
MediaStreamDescriptor(const String& id,
const MediaStreamComponentVector& audio_components,
const MediaStreamComponentVector& video_components);
MediaStreamDescriptorClient* Client() const { return client_.Get(); }
void SetClient(MediaStreamDescriptorClient* client) { client_ = client; }
// This is the same as the id of the |MediaStream|. It is unique in most
// contexts but collisions can occur e.g. if streams are created by different
// |RTCPeerConnection|s or a remote stream ID is signaled to be added, removed
// and then re-added resulting in a new stream object the second time around.
String Id() const { return id_; }
// Uniquely identifies this descriptor.
int UniqueId() const { return unique_id_; }
unsigned NumberOfAudioComponents() const { return audio_components_.size(); }
MediaStreamComponent* AudioComponent(unsigned index) const {
return audio_components_[index].Get();
}
const HeapVector<Member<MediaStreamComponent>>& AudioComponents() const {
return audio_components_;
}
unsigned NumberOfVideoComponents() const { return video_components_.size(); }
MediaStreamComponent* VideoComponent(unsigned index) const {
return video_components_[index].Get();
}
const HeapVector<Member<MediaStreamComponent>>& VideoComponents() const {
return video_components_;
}
void AddComponent(MediaStreamComponent*);
void RemoveComponent(MediaStreamComponent*);
void AddRemoteTrack(MediaStreamComponent*);
void RemoveRemoteTrack(MediaStreamComponent*);
bool Active() const { return active_; }
void SetActive(bool active);
void NotifyEnabledStateChangeForWebRtcAudio(bool enabled);
void AddObserver(WebMediaStreamObserver*);
void RemoveObserver(WebMediaStreamObserver*);
void Trace(Visitor*) const;
private:
Member<MediaStreamDescriptorClient> client_;
String id_;
int unique_id_;
HeapVector<Member<MediaStreamComponent>> audio_components_;
HeapVector<Member<MediaStreamComponent>> video_components_;
Vector<WebMediaStreamObserver*> observers_;
bool active_;
};
using MediaStreamDescriptorVector = HeapVector<Member<MediaStreamDescriptor>>;
using GCedMediaStreamDescriptorVector =
GCedHeapVector<Member<MediaStreamDescriptor>>;
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_MEDIASTREAM_MEDIA_STREAM_DESCRIPTOR_H_
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