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/*
* Copyright (C) 2018-2022 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. ``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
* 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 "ImageBuffer.h"
#include "RealtimeMediaSource.h"
#include "VideoPreset.h"
#include <wtf/Lock.h>
#include <wtf/RunLoop.h>
namespace WebCore {
class ImageTransferSessionVT;
enum class VideoFrameRotation : uint16_t;
class WEBCORE_EXPORT RealtimeVideoCaptureSource : public RealtimeMediaSource, public ThreadSafeRefCountedAndCanMakeThreadSafeWeakPtr<RealtimeVideoCaptureSource, WTF::DestructionThread::MainRunLoop> {
public:
virtual ~RealtimeVideoCaptureSource();
void clientUpdatedSizeFrameRateAndZoom(std::optional<int> width, std::optional<int> height, std::optional<double> frameRate, std::optional<double> zoom);
bool supportsSizeFrameRateAndZoom(std::optional<int> width, std::optional<int> height, std::optional<double>, std::optional<double>) override;
virtual void generatePresets() = 0;
double observedFrameRate() const final { return m_observedFrameRate; }
Vector<VideoPresetData> presetsData();
void ensureIntrinsicSizeMaintainsAspectRatio();
const std::optional<VideoPreset> currentPreset() const { return m_currentPreset; }
void ref() const final;
void deref() const final;
ThreadSafeWeakPtrControlBlock& controlBlock() const final;
protected:
RealtimeVideoCaptureSource(const CaptureDevice&, MediaDeviceHashSalts&&, PageIdentifier);
void setSizeFrameRateAndZoom(std::optional<int> width, std::optional<int> height, std::optional<double>, std::optional<double>) override;
virtual bool prefersPreset(const VideoPreset&) { return true; }
virtual void setFrameRateAndZoomWithPreset(double, double, std::optional<VideoPreset>&&) { };
virtual bool canResizeVideoFrames() const { return false; }
bool shouldUsePreset(const VideoPreset& current, const VideoPreset& candidate);
void setSupportedPresets(Vector<VideoPreset>&&);
void setSupportedPresets(Vector<VideoPresetData>&&);
virtual const Vector<VideoPreset>& presets();
bool frameRateRangeIncludesRate(const FrameRateRange&, double);
void updateCapabilities(RealtimeMediaSourceCapabilities&);
void dispatchVideoFrameToObservers(VideoFrame&, VideoFrameTimeMetadata);
static std::span<const IntSize> standardVideoSizes();
private:
struct CaptureSizeFrameRateAndZoom {
std::optional<VideoPreset> encodingPreset;
IntSize requestedSize;
double requestedFrameRate { 0 };
double requestedZoom { 0 };
};
bool supportsCaptureSize(std::optional<int>, std::optional<int>, const Function<bool(const IntSize&)>&&);
enum class TryPreservingSize { No, Yes };
std::optional<CaptureSizeFrameRateAndZoom> bestSupportedSizeFrameRateAndZoom(std::optional<int> width, std::optional<int> height, std::optional<double>, std::optional<double>, TryPreservingSize = TryPreservingSize::Yes);
bool presetSupportsFrameRate(const VideoPreset&, double);
bool presetSupportsZoom(const VideoPreset&, double);
#if !RELEASE_LOG_DISABLED
const char* logClassName() const override { return "RealtimeVideoCaptureSource"; }
#endif
std::optional<VideoPreset> m_currentPreset;
Vector<VideoPreset> m_presets;
Deque<double> m_observedFrameTimeStamps;
double m_observedFrameRate { 0 };
};
struct SizeFrameRateAndZoom {
std::optional<int> width;
std::optional<int> height;
std::optional<double> frameRate;
std::optional<double> zoom;
String toJSONString() const;
Ref<JSON::Object> toJSONObject() const;
};
} // namespace WebCore
namespace WTF {
template<typename Type> struct LogArgument;
template <>
struct LogArgument<WebCore::SizeFrameRateAndZoom> {
static String toString(const WebCore::SizeFrameRateAndZoom& size)
{
return size.toJSONString();
}
};
}; // namespace WTF
#endif // ENABLE(MEDIA_STREAM)
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