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Code Issues Releases Activity

video: use global timer; implement frameskip

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This commit is contained in:
Laserlicht 2024-10-18 03:30:22 +02:00
parent 8b427c3989
commit f0b7d007a0
2 changed files with 14 additions and 4 deletions
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12
client/media/CVideoHandler.cpp
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@ -173,6 +173,7 @@ void CVideoInstance::openVideo()
{ {
openContext(); openContext();
openCodec(findVideoStream()); openCodec(findVideoStream());
startTime = std::chrono::high_resolution_clock::now();
} }
void CVideoInstance::prepareOutput(float scaleFactor, bool useTextureOutput) void CVideoInstance::prepareOutput(float scaleFactor, bool useTextureOutput)
@ -391,9 +392,16 @@ void CVideoInstance::tick(uint32_t msPassed)
if(videoEnded()) if(videoEnded())
throw std::runtime_error("Video already ended!"); throw std::runtime_error("Video already ended!");
frameTime += msPassed / 1000.0; auto nowTime = std::chrono::high_resolution_clock::now();
double difference = std::chrono::duration_cast<std::chrono::milliseconds>(nowTime - startTime).count() / 1000.0;
if(frameTime >= getCurrentFrameEndTime()) int frameskipCounter = 0;
while(!videoEnded() && difference >= getCurrentFrameEndTime() + getCurrentFrameDuration() && frameskipCounter < MAX_FRAMESKIP) // Frameskip
{
decodeNextFrame();
frameskipCounter++;
}
if(!videoEnded() && difference >= getCurrentFrameEndTime())
loadNextFrame(); loadNextFrame();
} }

6
client/media/CVideoHandler.h
View File

@ -77,11 +77,13 @@ class CVideoInstance final : public IVideoInstance, public FFMpegStream
SDL_Surface * surface = nullptr; SDL_Surface * surface = nullptr;
Point dimensions; Point dimensions;
/// video playback current progress, in seconds /// video playback start time point
double frameTime = 0.0; std::chrono::high_resolution_clock::time_point startTime;
void prepareOutput(float scaleFactor, bool useTextureOutput); void prepareOutput(float scaleFactor, bool useTextureOutput);
const int MAX_FRAMESKIP = 5;
public: public:
~CVideoInstance(); ~CVideoInstance();