private static IEnumerable<FrameFingerPrintWrapper> IndexVideo(
string videoFile,
MediaInfo info,
long maxMemory
)
{
TimeSpan totalDuration = info.GetDuration();
var ffmpegProcessSettings = new FFMPEGProcessVideoSettings(
videoFile,
info.GetFramerate().Numerator,
info.GetFramerate().Denominator * 4,
FFMPEGMode.PlaybackAtFourX
);
using (var indexingPool = new VideoIndexingExecutor(4, (long)Math.Round((3.0 * maxMemory) / 4.0)))
using (var byteStore = new RawByteStore(info.GetWidth(), info.GetHeight(), indexingPool, (long)Math.Round(maxMemory / 4.0)))
using (var ffmpegProcess = new FFMPEGProcess(ffmpegProcessSettings, (byteArray, bytesToSubmit) => { byteStore.Submit(byteArray, bytesToSubmit); }))
{
ffmpegProcess.Execute();
byteStore.Shutdown();
byteStore.Wait();
indexingPool.Shutdown();
indexingPool.Wait();
return indexingPool.GetFingerPrints();
}
}
public RawByteStore(int width, int height, VideoIndexingExecutor videoIndexer, long maxCapacity)
{
_disposed = false;
_currentMemoryLevel = 0;
_width = width;
_height = height;
_rawByteQueue = new BlockingCollection <byte[]>();
_videoIndexer = videoIndexer;
_queueTask = Task.Factory.StartNew(RunQueue);
_maxCapacity = maxCapacity;
_capacityBarrier = new ManualResetEventSlim(true);
}
