static Mat PutCaption(Mat image, CaptionRequest caption, System.Drawing.Font font)
{
//WriteLog($"PutCaption {caption?.Caption}");
var size = image.Size();
using (var bitmap = image.ToBitmap())
using (var g = System.Drawing.Graphics.FromImage(bitmap))
{
if (caption.CognitiveResult != null && caption.CognitiveResult.predictions != null)
{
foreach (var prediction in caption.CognitiveResult.predictions)
{
var rect = new System.Drawing.Rectangle(
RatioToAbs(prediction.boundingBox.left, size.Width),
RatioToAbs(prediction.boundingBox.top, size.Height),
RatioToAbs(prediction.boundingBox.width, size.Width),
RatioToAbs(prediction.boundingBox.height, size.Height)
);
g.DrawRectangle(System.Drawing.Pens.Azure, rect);
g.DrawString($"{prediction.tagName}({prediction.probability})", font, System.Drawing.Brushes.Azure,
rect.Left,
rect.Bottom + 2);
}
}
var captionSize = g.MeasureString(caption.Caption, font);
g.DrawString(caption.Caption, font, System.Drawing.Brushes.Azure,
size.Width / 2 - captionSize.Width / 2,
size.Height - captionSize.Height - 4);
// XXX なんかVideoCaputureしたMatに位置情報が入っている感じがする
var captionedImage = image.Clone();
bitmap.ToMat(captionedImage);
return(captionedImage);
}
}
/// <summary>
/// Initializes the ModuleClient and sets up the callback to receive
/// messages containing temperature information
/// </summary>
static async Task Init()
{
MqttTransportSettings mqttSetting = new MqttTransportSettings(TransportType.Mqtt_Tcp_Only);
ITransportSettings[] settings = { mqttSetting };
// Open a connection to the Edge runtime
ModuleClient ioTHubModuleClient = await ModuleClient.CreateFromEnvironmentAsync(settings);
await ioTHubModuleClient.OpenAsync();
WriteLog("IoT Hub module client initialized.");
var connectionString = Environment.GetEnvironmentVariable("STORAGE_CONNECTION_STRING");
var containerName = Environment.GetEnvironmentVariable("RESULT_CONTAINER_NAME");
var storageAccount = CloudStorageAccount.Parse(connectionString);
var cloudBlobClient = storageAccount.CreateCloudBlobClient();
cloudBlobContainer = cloudBlobClient.GetContainerReference(containerName);
await cloudBlobContainer.CreateIfNotExistsAsync();
// XXX 環境変数に
videoInputStream = new VideoInputStream(0);
videoInputStream.Start();
var rtmpUri = Environment.GetEnvironmentVariable("RTMP_URI");
// XXX Size
videoLiveStream = new FfmpegRtmpVideoOutputStream(rtmpUri, fps, new Size(320, 240));
videoLiveStream.Start();
caption = new CaptionRequest {
Caption = ""
};
captionFont = new System.Drawing.Font("noto", 15f);
smallFont = new System.Drawing.Font("noto", 10f);
frameTimer = new System.Timers.Timer(1.0 / fps);
frameTimer.Elapsed += UpdateFrame;
frameTimer.Start();
http = new HttpRouter(new string[] { "http://+:80/" });
http.Register("/caption", SetCaption);
http.Register("/video/start", StartRecording);
http.Register("/video/end", EndRecording);
http.Register("/photo", TakePhoto);
http.Register("/photo_with_caption", TakePhotoWithCaption);
http.Start();
await Task.CompletedTask;
}
//キャプション設定
static Task SetCaption(HttpListenerContext context)
{
var request = context.Request;
var response = context.Response;
var requestJson = request.InputStream.ReadString();
var requestObj = JsonConvert.DeserializeObject <CaptionRequest>(requestJson);
caption = requestObj;
WriteLog($"SetCaption {requestJson}");
response.StatusCode = (int)HttpStatusCode.NoContent;
response.Close();
return(Task.CompletedTask);
}