/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_DOM_MEDIA_WEBRTC_JSAPI_RTCENCODEDFRAMEBASE_H_
#define MOZILLA_DOM_MEDIA_WEBRTC_JSAPI_RTCENCODEDFRAMEBASE_H_
#include <memory>
#include "js/TypeDecls.h"
#include "mozilla/dom/TypedArray.h" // ArrayBuffer
class nsIGlobalObject;
namespace webrtc {
class TransformableFrameInterface;
}
namespace mozilla::dom {
struct RTCEncodedFrameState {
std::unique_ptr<webrtc::TransformableFrameInterface> mFrame;
uint64_t mCounter =
0;
unsigned long mTimestamp =
0;
explicit RTCEncodedFrameState(
std::unique_ptr<webrtc::TransformableFrameInterface> aFrame,
uint64_t aCounter =
0,
unsigned long aTimestamp =
0);
// work around only having forward-declared TransformableFrameInterface
~RTCEncodedFrameState();
// avoid "move got disabled by a user-declared destructor” trap
RTCEncodedFrameState() =
default;
RTCEncodedFrameState(RTCEncodedFrameState&&) noexcept =
default;
RTCEncodedFrameState&
operator=(RTCEncodedFrameState&&) noexcept =
default;
RTCEncodedFrameState(
const RTCEncodedFrameState&) =
delete;
RTCEncodedFrameState&
operator=(
const RTCEncodedFrameState&) =
delete;
};
class RTCRtpScriptTransformer;
class RTCEncodedFrameBase : public nsISupports, public nsWrapperCache {
public:
explicit RTCEncodedFrameBase(nsIGlobalObject* aGlobal,
RTCEncodedFrameState& aState,
RTCRtpScriptTransformer* aOwner);
// forbid copy/move to protect mState
RTCEncodedFrameBase(
const RTCEncodedFrameBase&) =
delete;
RTCEncodedFrameBase&
operator=(
const RTCEncodedFrameBase&) =
delete;
RTCEncodedFrameBase(RTCEncodedFrameBase&&) =
delete;
RTCEncodedFrameBase&
operator=(RTCEncodedFrameBase&&) =
delete;
// nsISupports
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(RTCEncodedFrameBase)
nsIGlobalObject* GetParentObject()
const;
// Common webidl for RTCEncodedVideoFrame/RTCEncodedAudioFrame
unsigned long Timestamp()
const;
void SetData(
const ArrayBuffer& aData);
void GetData(JSContext* aCx, JS::Rooted<JSObject*>* aObj)
const;
uint64_t GetCounter()
const;
size_t Size()
const;
virtual
bool CheckOwner(RTCRtpScriptTransformer* aOwner)
const =
0;
std::unique_ptr<webrtc::TransformableFrameInterface> TakeFrame();
virtual
bool IsVideo()
const =
0;
protected:
virtual ~RTCEncodedFrameBase();
void DetachData();
RefPtr<nsIGlobalObject> mGlobal;
RefPtr<RTCRtpScriptTransformer> mOwner;
// Keep serializable state separate in this base and its subclasses
// in a manner that avoids diamond inheritance. Subclasses must pass
// in *this, to ensure it's constructed before and destroyed after
// this base; copy and move are deleted.
RTCEncodedFrameState& mState;
JS::Heap<JSObject*> mData;
};
}
// namespace mozilla::dom
#endif // MOZILLA_DOM_MEDIA_WEBRTC_JSAPI_RTCENCODEDFRAMEBASE_H_
