public HttpResponseMessage Get(int lastKnownFrame)
{
var frames = Recorder.Frames;
List <Region> regions = new List <Region>();
if (frames.FirstOrDefault(f => f.Number == lastKnownFrame) != null)
{
frames.FindAll(f => f.Number > lastKnownFrame).ForEach(f =>
{
f.Regions.ForEach(r =>
{
regions.Add(r);
});
});
}
else
{
regions.Add(new Region(0, 0, Recorder.OutputWidth, Recorder.OutputHeight));
}
Recorder.NormalizeRegions(regions);
Frame lastFrame = frames.Last();
using (Bitmap lastImage = new Bitmap(lastFrame.Image))
using (var response = new MemoryStream())
{
foreach (var region in regions)
{
using (var bmp = new Bitmap(region.Width, region.Height))
using (var graph = Graphics.FromImage(bmp))
using (var ms = new MemoryStream())
{
graph.DrawImage(lastImage, new Rectangle(0, 0, bmp.Width, bmp.Height),
new Rectangle(region.X1, region.Y1, region.Width, region.Height), GraphicsUnit.Pixel);
bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
var array = ms.ToArray();
response.Write(BitConverter.GetBytes(IPAddress.HostToNetworkOrder(lastFrame.Number)), 0, 4);
response.Write(BitConverter.GetBytes(IPAddress.HostToNetworkOrder(array.Length)), 0, 4);
response.Write(BitConverter.GetBytes(IPAddress.HostToNetworkOrder(region.X1)), 0, 4);
response.Write(BitConverter.GetBytes(IPAddress.HostToNetworkOrder(region.Y1)), 0, 4);
response.Write(array, 0, array.Length);
}
}
HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
result.Content = new ByteArrayContent(response.ToArray());
result.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");// "application/octet-stream"
return(result);
}
/*
* using (MemoryStream ms = new MemoryStream())
* {
* lastFrame.Image.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
* HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
* result.Content = new ByteArrayContent(ms.ToArray());
* result.Content.Headers.ContentType = new MediaTypeHeaderValue("image/png");// "application/octet-stream"
* return result;
* }
*/
}
