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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.
*/
#include "config.h"
#include "LibWebRTCRtpTransformBackend.h"
#if ENABLE(WEB_RTC) && USE(LIBWEBRTC)
#include "LibWebRTCRtpTransformableFrame.h"
namespace WebCore {
void LibWebRTCRtpTransformBackend::setInputCallback(Callback&& callback)
{
Locker locker { m_inputCallbackLock };
m_inputCallback = WTFMove(callback);
}
void LibWebRTCRtpTransformBackend::clearTransformableFrameCallback()
{
setInputCallback({ });
}
void LibWebRTCRtpTransformBackend::addOutputCallback(rtc::scoped_refptr<webrtc::TransformedFrameCallback>&& callback, uint32_t ssrc)
{
Locker locker { m_outputCallbacksLock };
m_outputCallbacks.insert_or_assign(ssrc, WTFMove(callback));
}
void LibWebRTCRtpTransformBackend::removeOutputCallback(uint32_t ssrc)
{
Locker locker { m_outputCallbacksLock };
m_outputCallbacks.erase(ssrc);
}
void LibWebRTCRtpTransformBackend::sendFrameToOutput(std::unique_ptr<webrtc::TransformableFrameInterface>&& rtcFrame)
{
Locker locker { m_outputCallbacksLock };
if (m_outputCallbacks.size() == 1) {
m_outputCallbacks.begin()->second->OnTransformedFrame(WTFMove(rtcFrame));
return;
}
auto iterator = m_outputCallbacks.find(rtcFrame->GetSsrc());
if (iterator != m_outputCallbacks.end())
iterator->second->OnTransformedFrame(WTFMove(rtcFrame));
}
void LibWebRTCRtpTransformBackend::processTransformedFrame(RTCRtpTransformableFrame& frame)
{
if (auto rtcFrame = static_cast<LibWebRTCRtpTransformableFrame&>(frame).takeRTCFrame())
sendFrameToOutput(WTFMove(rtcFrame));
}
void LibWebRTCRtpTransformBackend::Transform(std::unique_ptr<webrtc::TransformableFrameInterface> rtcFrame)
{
{
Locker locker { m_inputCallbackLock };
if (m_inputCallback) {
m_inputCallback(LibWebRTCRtpTransformableFrame::create(WTFMove(rtcFrame), m_mediaType == MediaType::Audio && m_side == Side::Sender));
return;
}
}
// In case of no input callback, make the transform a no-op.
sendFrameToOutput(WTFMove(rtcFrame));
}
void LibWebRTCRtpTransformBackend::RegisterTransformedFrameCallback(rtc::scoped_refptr<webrtc::TransformedFrameCallback> callback)
{
addOutputCallback(WTFMove(callback), 0);
}
void LibWebRTCRtpTransformBackend::RegisterTransformedFrameSinkCallback(rtc::scoped_refptr<webrtc::TransformedFrameCallback> callback, uint32_t ssrc)
{
addOutputCallback(WTFMove(callback), ssrc);
}
void LibWebRTCRtpTransformBackend::UnregisterTransformedFrameCallback()
{
removeOutputCallback(0);
}
void LibWebRTCRtpTransformBackend::UnregisterTransformedFrameSinkCallback(uint32_t ssrc)
{
removeOutputCallback(ssrc);
}
} // namespace WebCore
#endif // ENABLE(WEB_RTC) && USE(LIBWEBRTC)
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