/// <summary>
/// Starts up and selects a device's camera, and finds appropriate picture settings
/// based on the provided resolution!
/// </summary>
/// <param name="preferGPUTexture">Do you prefer GPU textures, or do you prefer a NativeArray of colors? Certain optimizations may be present to take advantage of this preference.</param>
/// <param name="resolution">Preferred resolution for taking pictures, note that resolutions are not guaranteed! Refer to CameraResolution for details.</param>
/// <param name="onInitialized">When the camera is initialized, this callback is called! Some cameras may return immediately, others may take a while. Can be null.</param>
public void Initialize(bool aPreferGPUTexture, CameraResolution aResolution, Action aOnInitialized)
{
resolution = aResolution;
Resolution cameraResolution = resolution.nativeResolution == NativeResolutionMode.Smallest ?
PhotoCapture.SupportedResolutions.OrderBy((res) => res.width * res.height).First() :
PhotoCapture.SupportedResolutions.OrderBy((res) => - res.width * res.height).First();
cacheTex = new Texture2D(cameraResolution.width, cameraResolution.height);
// Create a PhotoCapture object
PhotoCapture.CreateAsync(false, delegate(PhotoCapture captureObject)
{
camera = captureObject;
cameraParams = new CameraParameters();
cameraParams.hologramOpacity = 0.0f;
cameraParams.cameraResolutionWidth = cameraResolution.width;
cameraParams.cameraResolutionHeight = cameraResolution.height;
cameraParams.pixelFormat = CapturePixelFormat.BGRA32;
IntPtr unknown = camera.GetUnsafePointerToVideoDeviceController();
using (VideoDeviceControllerWrapperUWP wrapper = new VideoDeviceControllerWrapperUWP(unknown))
{
wrapper.SetExposure(-7);
wrapper.SetWhiteBalance(5000);
wrapper.SetISO(80);
}
if (aOnInitialized != null)
{
aOnInitialized();
}
isReady = true;
});
}
/// <summary>
/// Internal version of initialize. Should not be called more than once unless Shutdown has been called.
/// </summary>
/// <param name="preferGPUTexture">
/// Whether GPU textures are preferred over NativeArray of colors. Certain optimizations may be present to take advantage of this preference.
/// </param>
/// <param name="preferredResolution">
/// Preferred resolution for taking pictures. Note that resolutions are not guaranteed! Refer to CameraResolution for details.
/// </param>
/// <returns>
/// A <see cref="Task"/> that represents the operation.
/// </returns>
private async Task InnerInitializeAsync(bool preferGPUTexture, CameraResolution preferredResolution)
{
// Store preferred resolution
resolution = preferredResolution;
// Find the nearest supported camera resolution to the preferred one
Resolution cameraResolution = resolution.nativeResolution == NativeResolutionMode.Smallest ?
PhotoCapture.SupportedResolutions.OrderBy((res) => res.width * res.height).First() :
PhotoCapture.SupportedResolutions.OrderBy((res) => - res.width * res.height).First();
// Create the texture cache
cacheTex = new Texture2D(cameraResolution.width, cameraResolution.height);
// Setup parameters for the camera
cameraParams = new CameraParameters();
cameraParams.hologramOpacity = 0.0f;
cameraParams.cameraResolutionWidth = cameraResolution.width;
cameraParams.cameraResolutionHeight = cameraResolution.height;
cameraParams.pixelFormat = CapturePixelFormat.BGRA32;
// Create the PhotoCapture camera
camera = await CameraExtensions.CreateAsync(false);
// Create the wrapper
IntPtr unknown = camera.GetUnsafePointerToVideoDeviceController();
wrapper = new VideoDeviceControllerWrapperUWP(unknown);
}
