public async Task <ActionResult> GetImage()
{
if (DateTime.Now.Hour > 18 || DateTime.Now.Hour < 7)
{
_logger.LogInformation("Tuning for night mode...");
MMALCameraConfig.ExposureCompensation = (int)MMAL_PARAM_EXPOSUREMODE_T.MMAL_PARAM_EXPOSUREMODE_NIGHT;
}
else
{
_logger.LogInformation("Tuning for normal mode...");
MMALCameraConfig.ExposureCompensation = (int)MMAL_PARAM_EXPOSUREMODE_T.MMAL_PARAM_EXPOSUREMODE_OFF;
}
byte[] imageData;
using (var imgCaptureHandler = new MemoryStreamCaptureHandler())
{
_logger.LogInformation("Capturing the picture...");
await _camera.TakePicture(imgCaptureHandler, MMALEncoding.JPEG, MMALEncoding.I420);
imageData = new byte[imgCaptureHandler.CurrentStream.Length];
imgCaptureHandler.CurrentStream.Seek(0, System.IO.SeekOrigin.Begin);
imgCaptureHandler.CurrentStream.Read(imageData, 0, imageData.Length);
_logger.LogInformation("Captured the picture...");
}
return(File(imageData, "image/jpeg"));
}
/// <summary>
/// Takes a picture and saves that in the default location
/// </summary>
/// <returns>The filename of the picture,
/// without path or extension</returns>
public async Task <string> TakePicture()
{
// Instantiate the camera, if needed
// In my demos I always have the cam upside down. Fix that (not needed
// for analyzing, just for the user...)
if (_cameraDevice == null)
{
MMALCameraConfig.Flips = MMAL_PARAM_MIRROR_T.MMAL_PARAM_MIRROR_BOTH;
_cameraDevice = MMALCamera.Instance;
}
// Create the handler that will receive the data
using (var imgCaptureHandler = new ImageStreamCaptureHandler(
"/home/pi/images/",
"jpg"))
{
// Call the camera and collect bytes
await _cameraDevice.TakePicture(
imgCaptureHandler,
MMALEncoding.JPEG,
MMALEncoding.I420);
// Get the last generated filename
var fileName = imgCaptureHandler.GetFilename();
return(fileName);
}
}
static void Main(string[] args)
{
MMALCamera cam = MMALCamera.Instance;
// Create observable that will generate an incrementing number every second
var observable = Observable.Generate(1, x => true, x => x + 1, x => x, x => TimeSpan.FromSeconds(1));
var relay = OutputPort.Create(17, OutputPort.InitialValue.Low).Result;
var light1 = OutputPort.Create(27, OutputPort.InitialValue.Low).Result;
var light2 = OutputPort.Create(22, OutputPort.InitialValue.Low).Result;
var button = InputPort.Create(24, GpioEdge.Both).Result;
// Write true whenever the number is even and odd when the number is odd
using (var imgCaptureHandler = new ImageStreamCaptureHandler("/home/pi/images/", "jpg"))
using (observable.Select(x => x % 2 == 0).Subscribe(relay))
using (observable.Select(x => x % 2 == 0).Subscribe(light1))
//using (observable.Select(x => x % 2 != 0).Subscribe(light2))
//using (button.Do(pressed => Console.WriteLine(pressed)).Subscribe())
using (button.Subscribe(light2))
using (var i2cBus = new I2CBusPI("/dev/i2c-1"))
{
var takePictureTask = cam.TakePicture(imgCaptureHandler, MMALEncoding.JPEG, MMALEncoding.I420);
var i2cDevice = new I2CDevicePI(i2cBus, Display.DefaultI2CAddress);
var sensor = new BME280Sensor(i2cBus, 1014);
var display = new SSD1306.Display(i2cDevice, 128, 64);
display.Init();
var dfont = new AdafruitSinglePageFont();
for (int i = 0; i < 100; i++)
{
display.WriteLineBuff(dfont, $"Temperature: {sensor.ReadTemperature().Result} °C", $"Pressure: {sensor.ReadPressure().Result} Pa", $"Humidity: {sensor.ReadHumidity().Result} %", $"Altitude: {sensor.ReadAltitude().Result} m", "Line 5", "Line 6", "Line 7", "Line 8");
display.DisplayUpdate();
}
//for (int i = 0; i < 100; i++)
// display.DrawPixel(i, i);
takePictureTask.Wait();
display.ClearDisplay();
}
// releasing relay
relay.Write(true);
// turning of light
light1.Write(false);
light2.Write(false);
// Cleanup disposes all unmanaged resources and unloads Broadcom library. To be called when no more processing is to be done
// on the camera.
cam.Cleanup();
}
private async Task <string> CapturePictureAndGetFileName()
{
string fileName = null;
using (var imgCaptureHandler = new ImageStreamCaptureHandler(picStoragePath, picExtension))
{
await MMALCamera.TakePicture(imgCaptureHandler, MMALEncoding.JPEG, MMALEncoding.I420);
fileName = imgCaptureHandler.GetFilename();
}
return(fileName);
}
// private string UploadUrl = "https://westeurope.api.cognitive.microsoft.com/customvision/v3.0/Prediction/aeeb0af8-9c49-45d3-8419-9c76485c1fdf/detect/iterations/Iteration1/image";
public async Task <string> TakePicture()
{
if (_mmalCamera == null)
{
MMALCameraConfig.Flips = MMAL_PARAM_MIRROR_T.MMAL_PARAM_MIRROR_BOTH;
_mmalCamera = MMALCamera.Instance;
}
using (var imgCaptureHandler = new ImageStreamCaptureHandler("/home/pi/images/", "jpg"))
{
await _mmalCamera.TakePicture(imgCaptureHandler, MMALEncoding.JPEG, MMALEncoding.I420);
var fileName = imgCaptureHandler.GetFilename();
return(fileName);
}
}
public async Task <ImageDetails> Post([FromBody] bool refresh)
{
String fileName = "NotAnImage.jpg";
logger.LogInformation("Will refresh Image");
using (var imgCaptureHandler = new ImageStreamCaptureHandler("/home/pi/doorimages/", "jpg"))
{
await cam.TakePicture(imgCaptureHandler, MMALEncoding.JPEG, MMALEncoding.I420);
fileName = imgCaptureHandler.GetFilename();
logger.LogInformation(fileName);
}
ImageDetails imageDetails = new ImageDetails();
imageDetails.Name = "/doorimages/" + Uri.EscapeDataString(fileName) + ".jpg";
return(imageDetails);
}
public static async Task TakePictureAsync()
{
MMALCameraConfig.Annotate = new AnnotateImage
{
ShowDateText = true,
ShowTimeText = true
};
MMALCameraConfig.StatsPass = true;
// Singleton initialized lazily. Reference once in your application.
MMALCamera cam = MMALCamera.Instance;
using (var imgCaptureHandler = new ImageStreamCaptureHandler("/home/pi/images/", "jpg"))
{
await cam.TakePicture(imgCaptureHandler, MMALEncoding.JPEG, MMALEncoding.I420);
}
// Cleanup disposes all unmanaged resources and unloads Broadcom library. To be called when no more processing is to be done
// on the camera.
cam.Cleanup();
}
static async Task Main(string[] args)
{
System.Console.WriteLine("Starting");
const int lightCount = 12;
var settings = new SpiConnectionSettings(0, 0)
{
ClockFrequency = 2_400_000,
Mode = SpiMode.Mode0,
DataBitLength = 8
};
// Create a Neo Pixel x8 stick on spi 0.0
var spi = SpiDevice.Create(settings);
var neo = new Ws2812b(spi, lightCount);
var img = neo.Image;
img.Clear();
for (var x = 0; x < lightCount; x++)
{
img.SetPixel(x, 0, Color.White);
}
neo.Update();
MMALCamera cam = MMALCamera.Instance;
for (var y = 0; y < 50; y++)
{
using (var imgCaptureHandler = new ImageStreamCaptureHandler($"_testing{y}.jpg")){
await cam.TakePicture(imgCaptureHandler, MMALEncoding.JPEG, MMALEncoding.I420);
}
Step();
}
img.Clear();
neo.Update();
cam.Cleanup();
}
public async Task TakePictureAsync(string filePath)
{
try
{
// Singleton initialized lazily. Reference once in your application.
MMALCamera cam = this.MMALSharpCameraInstance;
using (var imgCaptureHandler = new ImageStreamCaptureHandler(filePath))
{
await cam.TakePicture(imgCaptureHandler, MMALEncoding.JPEG, MMALEncoding.I420);
}
// Cleanup disposes all unmanaged resources and unloads Broadcom library. To be called when no more processing is to be done
// on the camera.
Console.WriteLine($"Wrote picture to: {filePath}");
}
catch (Exception ex)
{
Console.WriteLine($"{nameof(MMALSharpCamera)} {nameof(TakePictureAsync)} Failed");
Console.WriteLine($"{nameof(MMALSharpCamera)} {nameof(TakePictureAsync)} {ex.ToString()}");
Console.WriteLine($"{nameof(MMALSharpCamera)} {nameof(TakePictureAsync)} Failed");
}
}
public async Task <TakePhotoResponse> TakePhotoAsync(TakePhotoRequest takePhotoRequest)
{
var cameraWasUsed = false;
if (IsTakingTimelapse())
{
return(new TakePhotoResponse()
{
ErrorMessage = $"Timelapse {currentTimelapseId?.ToString()} is being taken",
});
}
try
{
var path = EnsureLocalDirectoryExists();
await cameraInUse.WaitAsync();
cameraWasUsed = true;
using (var imgCaptureHandler = new ImageStreamCaptureHandler(path, takePhotoRequest.ImageType))
{
var stopwatch = Stopwatch.StartNew();
if (takePhotoRequest.QuickMode)
{
await camera.TakeRawPicture(imgCaptureHandler);
}
else
{
await camera.TakePicture(imgCaptureHandler, takePhotoRequest.GetImageEncoding(), takePhotoRequest.GetPixelFormatEncoding());
}
stopwatch.Stop();
var localFilePath = imgCaptureHandler.GetFilepath();
var blobName = await UploadFileAsync("photos", localFilePath);
var fi = new FileInfo(localFilePath);
Logger.Log($"New photo: {fi.Length} bytes, in {stopwatch.ElapsedMilliseconds}ms");
if (takePhotoRequest.DeleteLocalFile)
{
File.Delete(localFilePath);
}
return(new TakePhotoResponse()
{
BlobName = blobName,
LocalFilePath = localFilePath,
DeleteLocalFile = takePhotoRequest.DeleteLocalFile,
PixelFormat = takePhotoRequest.PixelFormat,
ImageType = takePhotoRequest.ImageType,
QuickMode = takePhotoRequest.QuickMode,
});
}
}
finally
{
if (cameraWasUsed)
{
cameraInUse.Release();
}
}
}
