private Task <AtemFrame> GetFrameFromJob(AtemMediaCacheItem image)
{
Task <AtemFrame> frameTask = null;
lock (image.JobLock)
{
frameTask = image.RawFrame;
}
if (frameTask == null)
{
throw new Exception("Download of still not queued...");
}
return(frameTask);
}
public async Task <IActionResult> GetImage(string deviceId, string hash)
{
// TODO - quality/format selector
var client = _repo.GetConnection(deviceId);
if (client == null)
{
return(BadRequest("Device not found"));
}
AtemMediaCacheItem image = client.GetImage(hash.ToUpper());
if (image == null)
{
return(NotFound());
}
if (image.PreviewJpeg == null)
{
AtemFrame frame = await GetFrameFromJob(image);
// TODO - this makes a lot of assumptions about color space and resolution
using Image image2 = Image.LoadPixelData <Rgba32>(frame.GetRGBA(ColourSpace.BT709), 1920, 1080);
// TODO - is this a good resolution?
image2.Mutate(x => x.Resize(640, 0));
var outStream = new MemoryStream();
await image2.SaveAsJpegAsync(outStream);
image.PreviewJpeg = outStream.ToArray();
}
return(File(image.PreviewJpeg, "image/jpeg"));
}
