Source/WebCore/platform/mock/MockRealtimeVideoSource.h

/*
 * Copyright (C) 2015-2017 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.
 * 3. Neither the name of Ericsson nor the names of its contributors
 *    may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
 * OWNER 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,
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 */

#ifndef MockRealtimeVideoSource_h
#define MockRealtimeVideoSource_h

#if ENABLE(MEDIA_STREAM)

#include "FontCascade.h"
#include "ImageBuffer.h"
#include "MockRealtimeMediaSource.h"
#include <wtf/RunLoop.h>

namespace WebCore {

class FloatRect;
class GraphicsContext;

class MockRealtimeVideoSource : public MockRealtimeMediaSource {
public:

    static CaptureSourceOrError create(const String& deviceID, const String& name, const MediaConstraints*);

    static VideoCaptureFactory& factory();

    virtual ~MockRealtimeVideoSource();

protected:
    MockRealtimeVideoSource(const String& deviceID, const String& name);
    virtual void updateSampleBuffer() { }

    ImageBuffer* imageBuffer() const;

    Seconds elapsedTime();
    bool applySize(const IntSize&) override;

private:
    void updateSettings(RealtimeMediaSourceSettings&) override;
    void initializeCapabilities(RealtimeMediaSourceCapabilities&) override;
    void initializeSupportedConstraints(RealtimeMediaSourceSupportedConstraints&) override;

    void startProducingData() final;
    void stopProducingData() final;

    void drawAnimation(GraphicsContext&);
    void drawText(GraphicsContext&);
    void drawBoxes(GraphicsContext&);

    bool applyFrameRate(double) override;
    bool applyFacingMode(RealtimeMediaSourceSettings::VideoFacingMode) override { return true; }
    bool applyAspectRatio(double) override { return true; }

    bool isCaptureSource() const final { return true; }

    void generateFrame();

    void delaySamples(Seconds) override;

    bool mockCamera() const { return device() == MockDevice::Camera1 || device() == MockDevice::Camera2; }
    bool mockScreen() const { return device() == MockDevice::Screen1 || device() == MockDevice::Screen2; }

    float m_baseFontSize { 0 };
    float m_bipBopFontSize { 0 };
    float m_statsFontSize { 0 };

    mutable std::unique_ptr<ImageBuffer> m_imageBuffer;

    Path m_path;
    DashArray m_dashWidths;

    MonotonicTime m_startTime { MonotonicTime::nan() };
    Seconds m_elapsedTime { 0_s };
    MonotonicTime m_delayUntil;

    unsigned m_frameNumber { 0 };

    RunLoop::Timer<MockRealtimeVideoSource> m_timer;
};

} // namespace WebCore

#endif // ENABLE(MEDIA_STREAM)

#endif // MockRealtimeVideoSource_h