public VideoEncoder ScheduleEncode(Video video)
{
VideoEncoder encoder = null;
lock (instanceLock)
{
lock (instanceLock)
{
if (!runningEncoders.ContainsKey(video.node.id))
{
encoder = new VideoEncoder(this, video);
LongTask task = new LongTask(() => {
encoder.Run();
lock (instanceLock)
{
runningEncoders.Remove(encoder.Video.node.id);
runningEncodersById.Remove(encoder.Id);
}
}, video.node.owner, $"Build MP4 for '{video.node.name}' (id: {video.node.id})");
scheduler.Start(task);
runningEncoders[video.node.id] = encoder;
runningEncodersById[encoder.Id] = encoder;
}
else
{
encoder = runningEncoders[video.node.id];
}
}
}
return(encoder);
}
public VideoEncoderService(PriorityTaskScheduler scheduler)
{
this.scheduler = scheduler;
Get["/{id}"] = (p, c) =>
{
var id = (string)p["id"];
VideoEncoder encoder = null;
lock (instanceLock)
{
if (runningEncodersById.ContainsKey(id))
{
encoder = runningEncodersById[id];
}
}
if (encoder != null)
{
c.Response.StatusCode = 200;
c.Response.Content = encoder.ToJson();
}
};
PostAsync["/{id}/progress"] = async(p, c) =>
{
var values = new Dictionary <string, string>();
string id = (string)p["id"];
VideoEncoder encoder = null;
lock (instanceLock)
{
if (runningEncodersById.ContainsKey(id))
{
encoder = runningEncodersById[id];
}
}
if (encoder == null)
{
return;
}
using (StreamReader sr = new StreamReader(c.Request.InputStream))
{
var end = false;
while (!sr.EndOfStream && !end)
{
var line = await sr.ReadLineAsync();
var pos = line.IndexOf('=');
if (pos > 0)
{
var cmd = line.Substring(0, pos);
var value = line.Substring(pos + 1);
if (cmd == "progress")
{
end |= value == "end";
// get the total micro secondes position in the video
if (values.ContainsKey("out_time_ms") && long.TryParse(values["out_time_ms"], out long outTimeMs))
{
encoder.TimeProgress = ((double)outTimeMs) / 1000000.0d;
}
// get current frame position in the video
if (values.ContainsKey("frame") && long.TryParse(values["frame"], out long frame))
{
encoder.Frame = frame;
}
values.Clear();
}
else
{
values[cmd] = value;
}
}
}
}
};
}