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/*
* Copyright (C) 2018 Apple 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
*/
#pragma once
#if ENABLE(MEDIA_STREAM)
#include "ActiveDOMObject.h"
#include "EventTarget.h"
#include "MediaStream.h"
#include "MediaStreamTrackPrivate.h"
#include <wtf/UniqueRef.h>
namespace WebCore {
class Blob;
class Document;
class MediaRecorderPrivate;
typedef std::unique_ptr<MediaRecorderPrivate>(*creatorFunction)();
class MediaRecorder final
: public ActiveDOMObject
, public RefCounted<MediaRecorder>
, public EventTargetWithInlineData
, public CanMakeWeakPtr<MediaRecorder>
, private MediaStream::Observer
, private MediaStreamTrackPrivate::Observer {
WTF_MAKE_ISO_ALLOCATED(MediaRecorder);
public:
enum class RecordingState { Inactive, Recording, Paused };
struct Options {
String mimeType;
unsigned audioBitsPerSecond;
unsigned videoBitsPerSecond;
unsigned bitsPerSecond;
};
~MediaRecorder();
static ExceptionOr<Ref<MediaRecorder>> create(Document&, Ref<MediaStream>&&, Options&& = { });
WEBCORE_EXPORT static void setCustomPrivateRecorderCreator(creatorFunction);
RecordingState state() const { return m_state; }
using RefCounted::ref;
using RefCounted::deref;
ExceptionOr<void> startRecording(Optional<int>);
ExceptionOr<void> stopRecording();
private:
MediaRecorder(Document&, Ref<MediaStream>&&, std::unique_ptr<MediaRecorderPrivate>&&, Options&& = { });
static std::unique_ptr<MediaRecorderPrivate> getPrivateImpl(const MediaStreamPrivate&);
Ref<Blob> createRecordingDataBlob();
Document* document() const;
// EventTarget
void refEventTarget() final { ref(); }
void derefEventTarget() final { deref(); }
EventTargetInterface eventTargetInterface() const final { return MediaRecorderEventTargetInterfaceType; }
ScriptExecutionContext* scriptExecutionContext() const final { return ActiveDOMObject::scriptExecutionContext(); }
// ActiveDOMObject API.
void suspend(ReasonForSuspension) final;
void stop() final;
const char* activeDOMObjectName() const final;
void stopRecordingInternal();
// MediaStream::Observer
void didAddOrRemoveTrack() final;
// MediaStreamTrackPrivate::Observer
void trackEnded(MediaStreamTrackPrivate&) final;
void trackMutedChanged(MediaStreamTrackPrivate&) final { };
void trackSettingsChanged(MediaStreamTrackPrivate&) final { };
void trackEnabledChanged(MediaStreamTrackPrivate&) final { };
void sampleBufferUpdated(MediaStreamTrackPrivate&, MediaSample&) final;
void audioSamplesAvailable(MediaStreamTrackPrivate&, const MediaTime&, const PlatformAudioData&, const AudioStreamDescription&, size_t) final;
void scheduleDeferredTask(Function<void()>&&);
static creatorFunction m_customCreator;
Options m_options;
Ref<MediaStream> m_stream;
std::unique_ptr<MediaRecorderPrivate> m_private;
RecordingState m_state { RecordingState::Inactive };
Vector<Ref<MediaStreamTrackPrivate>> m_tracks;
bool m_isActive { true };
};
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM)