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/*
* Copyright (C) 2020 Apple Inc.
*
* 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(WEB_RTC) && USE(LIBWEBRTC)
#include "LibWebRTCMacros.h"
#include "RTCRtpTransformBackend.h"
#include <webrtc/api/scoped_refptr.h>
#include <wtf/Lock.h>
#include <wtf/StdUnorderedMap.h>
WTF_IGNORE_WARNINGS_IN_THIRD_PARTY_CODE_BEGIN
#include <webrtc/api/frame_transformer_interface.h>
WTF_IGNORE_WARNINGS_IN_THIRD_PARTY_CODE_END
namespace WebCore {
class LibWebRTCRtpTransformBackend : public RTCRtpTransformBackend, public webrtc::FrameTransformerInterface {
protected:
LibWebRTCRtpTransformBackend(MediaType, Side);
void setInputCallback(Callback&&);
protected:
MediaType mediaType() const final { return m_mediaType; }
private:
void sendFrameToOutput(std::unique_ptr<webrtc::TransformableFrameInterface>&&);
void addOutputCallback(rtc::scoped_refptr<webrtc::TransformedFrameCallback>&&, uint32_t ssrc);
void removeOutputCallback(uint32_t ssrc);
// RTCRtpTransformBackend
void processTransformedFrame(RTCRtpTransformableFrame&) final;
void clearTransformableFrameCallback() final;
Side side() const final { return m_side; }
// webrtc::FrameTransformerInterface
void Transform(std::unique_ptr<webrtc::TransformableFrameInterface>) final;
void RegisterTransformedFrameCallback(rtc::scoped_refptr<webrtc::TransformedFrameCallback>) final;
void RegisterTransformedFrameSinkCallback(rtc::scoped_refptr<webrtc::TransformedFrameCallback>, uint32_t ssrc) final;
void UnregisterTransformedFrameCallback() final;
void UnregisterTransformedFrameSinkCallback(uint32_t ssrc) final;
void AddRef() const final { ref(); }
webrtc::RefCountReleaseStatus Release() const final;
MediaType m_mediaType;
Side m_side;
Lock m_inputCallbackLock;
Callback m_inputCallback WTF_GUARDED_BY_LOCK(m_inputCallbackLock);
Lock m_outputCallbacksLock;
StdUnorderedMap<uint32_t, rtc::scoped_refptr<webrtc::TransformedFrameCallback>> m_outputCallbacks WTF_GUARDED_BY_LOCK(m_outputCallbacksLock);
};
inline LibWebRTCRtpTransformBackend::LibWebRTCRtpTransformBackend(MediaType mediaType, Side side)
: m_mediaType(mediaType)
, m_side(side)
{
}
inline webrtc::RefCountReleaseStatus LibWebRTCRtpTransformBackend::Release() const
{
deref();
return webrtc::RefCountReleaseStatus::kOtherRefsRemained;
}
} // namespace WebCore
#endif // ENABLE(WEB_RTC) && USE(LIBWEBRTC)
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