moonlight-qt/app/streaming/video/ffmpeg-renderers/pacer/pacer.h

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#pragma once
#include "../../decoder.h"
#include "../renderer.h"
#include <QQueue>
#include <QMutex>
#include <QWaitCondition>
class IVsyncSource {
public:
virtual ~IVsyncSource() {}
virtual bool initialize(SDL_Window* window, int displayFps) = 0;
};
class Pacer
{
public:
Pacer(IFFmpegRenderer* renderer, PVIDEO_STATS videoStats);
~Pacer();
void submitFrame(AVFrame* frame);
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bool initialize(SDL_Window* window, int maxVideoFps, bool enablePacing);
void vsyncCallback(int timeUntilNextVsyncMillis);
private:
static int renderThread(void* context);
void addRenderTimeToHistory(int renderTime);
void renderFrame(AVFrame* frame);
QQueue<AVFrame*> m_RenderQueue;
QQueue<AVFrame*> m_PacingQueue;
QQueue<int> m_PacingQueueHistory;
QQueue<int> m_RenderTimeHistory;
QMutex m_FrameQueueLock;
QWaitCondition m_RenderQueueNotEmpty;
QWaitCondition m_PacingQueueNotEmpty;
SDL_Thread* m_RenderThread;
bool m_Stopping;
IVsyncSource* m_VsyncSource;
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IFFmpegRenderer* m_VsyncRenderer;
int m_MaxVideoFps;
int m_DisplayFps;
PVIDEO_STATS m_VideoStats;
};