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Use Pacer to drive all rendering

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This commit is contained in:
Cameron Gutman 2018-08-15 23:57:03 -07:00
commit 7d61acb2a8
13 changed files with 65 additions and 75 deletions
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26
app/streaming/video/ffmpeg-renderers/pacer/pacer.cpp
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@ -10,7 +10,7 @@
#define FRAME_HISTORY_ENTRIES 8
Pacer::Pacer(IVsyncRenderer* renderer) :
Pacer::Pacer(IFFmpegRenderer* renderer) :
m_FrameQueueLock(0),
m_VsyncSource(nullptr),
m_VsyncRenderer(renderer),
@ -111,10 +111,15 @@ bool Pacer::initialize(SDL_Window* window, int maxVideoFps)
#elif defined(Q_OS_WIN32)
m_VsyncSource = new DxVsyncSource(this);
#else
SDL_assert(false);
// Platforms without a VsyncSource will just render frames
// immediately like they used to.
#endif
return m_VsyncSource->initialize(window);
if (m_VsyncSource != nullptr && !m_VsyncSource->initialize(window)) {
return false;
}
return true;
}
void Pacer::submitFrame(AVFrame* frame)
@ -122,9 +127,18 @@ void Pacer::submitFrame(AVFrame* frame)
// Make sure initialize() has been called
SDL_assert(m_MaxVideoFps != 0);
SDL_AtomicLock(&m_FrameQueueLock);
m_FrameQueue.enqueue(frame);
SDL_AtomicUnlock(&m_FrameQueueLock);
// Queue the frame until the V-sync callback if
// we have a V-sync source, otherwise deliver it
// immediately and hope for the best.
if (m_VsyncSource != nullptr) {
SDL_AtomicLock(&m_FrameQueueLock);
m_FrameQueue.enqueue(frame);
SDL_AtomicUnlock(&m_FrameQueueLock);
}
else {
m_VsyncRenderer->renderFrameAtVsync(frame);
av_frame_free(&frame);
}
}
void Pacer::drain()