public static void Main(string[] args)
{
Parser.Default.ParseArguments<SearchCommandVerb, IndexCommandVerb>(args)
.WithParsed<SearchCommandVerb>(search =>
{
var serializationMethod = SerializationMethod.JSON;
Enum.TryParse(search.SerializationMethod, out serializationMethod);
Maybe<ImageFingerPrint> fingerPrintMaybe = ImageFingerPrinter.TryCalculateFingerPrint(search.PictureFile);
if (fingerPrintMaybe.IsSomething())
{
var database = new IndexDatabase(search.IndexFile, serializationMethod);
IEnumerable<IndexEntry> queryResults = database.TryFindEntries(fingerPrintMaybe.Value);
foreach (IndexEntry entry in queryResults)
{
Console.Error.WriteLine(string.Format("{0} ({1}, {2}) ", entry.VideoFile, entry.StartTime, entry.EndTime));
}
}
})
.WithParsed<IndexCommandVerb>(index =>
{
var serializationMethod = SerializationMethod.JSON;
Enum.TryParse(index.SerializationMethod, out serializationMethod);
var database = new IndexDatabase(index.IndexFile, serializationMethod);
Indexer.IndexVideo(index.VideoFile, database);
database.Flush();
})
.WithNotParsed(errors =>
{
Console.Error.WriteLine("Could not parse arguments");
});
}
private static void IndexEntries(string videoFile, MediaInfo info, IndexDatabase database)
{
TimeSpan totalDuration = info.GetDuration();
for (var startTime = TimeSpan.FromSeconds(0); startTime < totalDuration; startTime += PlaybackDuration)
{
IndexEntriesAtIndex(videoFile, startTime, info.GetFramerate(), totalDuration, database);
}
}
private static void IndexEntriesAtIndex(
string videoFile,
TimeSpan startTime,
Ratio framerate,
TimeSpan totalDuration,
IndexDatabase database
)
{
string outputDirectory = Path.GetRandomFileName();
Ratio quarterFramerate = new Ratio(framerate.Numerator, framerate.Denominator * 4);
var ffmpegProcessSettings = new FFMPEGProcessSettings(
videoFile,
outputDirectory,
startTime,
CalculateFramesToOutputFromFramerate(startTime, quarterFramerate, totalDuration),
framerate,
FFMPEGOutputFormat.Y4M
);
if (Directory.Exists(outputDirectory) == false)
{
Directory.CreateDirectory(outputDirectory);
}
using (var ffmpegProcess = new FFMPEGProcess(ffmpegProcessSettings))
{
ffmpegProcess.Execute();
IndexFilesInDirectory(videoFile, outputDirectory, startTime, database, quarterFramerate);
try
{
Directory.Delete(outputDirectory, true);
}
catch (Exception e)
{
Console.Error.WriteLine(string.Format("Could not clean up images: {0}", e.Message));
}
}
}
public static void IndexVideo(string videoFile, IndexDatabase database)
{
MediaInfo info = new MediaInfoProcess(videoFile).Execute();
IndexEntries(videoFile, info, database);
}
private static void IndexFilesInDirectory(string originalFileName, string directory, TimeSpan startTime, IndexDatabase database, Ratio frameRate)
{
foreach (string file in Directory.EnumerateFiles(directory, "*.y4m"))
{
using (var parser = new VideoFileParser(file))
{
Maybe<VideoFile> videoFileMaybe = parser.TryParseVideoFile();
if (videoFileMaybe.IsNothing())
{
return;
}
VideoFile videoFile = videoFileMaybe.Value;
int frameNumber = 0;
foreach (VideoFrame frame in videoFile.Frames)
{
database.QueueAddEntry(new IndexEntry
{
VideoFile = originalFileName,
StartTime = startTime,
EndTime = CalculateEndTime(startTime, frameRate, frameNumber),
FrameHash = ImageFingerPrinter.CalculateFingerPrint(frame),
});
frameNumber++;
}
}
}
}