Method cacheFrame

YUViewLib/src/video/videoHandler.cpp:269–294

Put the frame into the cache (if it is not already in there)

// Put the frame into the cache (if it is not already in there)
void videoHandler::cacheFrame(int frameIdx, bool testMode)
{
  DEBUG_VIDEO("videoHandler::cacheFrame %d %s", frameIdx, testMode ? "testMode" : "");

  if (cacheValid && isInCache(frameIdx) && !testMode)
  {
    // No need to add it again
    DEBUG_VIDEO("videoHandler::cacheFrame frame %i already in cache - returning", frameIdx);
    return;
  }

  // Load the frame. While this is happening in the background the frame size must not change.
  QImage cacheImage;
  loadFrameForCaching(frameIdx, cacheImage);

  // Put it into the cache
  if (!cacheImage.isNull())
  {
    DEBUG_VIDEO("videoHandler::cacheFrame insert frame %i into cache", frameIdx);
    QMutexLocker imageCacheLock(&imageCacheAccess);
    if (cacheValid && !testMode)
      imageCache.insert(frameIdx, cacheImage);
  }
  else
    DEBUG_VIDEO("videoHandler::cacheFrame loading frame %i for caching failed", frameIdx);
}

unsigned videoHandler::getCachingFrameSize() const
{