public void OpenCamera2(SurfaceTexture surfaceTexture)
{
//Camera2
CameraManager manager = (CameraManager)Android.App.Application.Context.GetSystemService(Context.CameraService);
//string cameraId = manager.GetCameraIdList().Where(r => manager.GetCameraCharacteristics(r).Get(CameraCharacteristics.LensFacing).ToString() == "").FirstOrDefault();
string cameraId = manager.GetCameraIdList().FirstOrDefault();
CameraCharacteristics cameraCharacteristics = manager.GetCameraCharacteristics(cameraId);
Android.Hardware.Camera2.Params.StreamConfigurationMap scm = (Android.Hardware.Camera2.Params.StreamConfigurationMap)cameraCharacteristics.Get(CameraCharacteristics.ScalerStreamConfigurationMap);
var previewSize = scm.GetOutputSizes((int)ImageFormatType.Jpeg)[0];
manager.OpenCamera(cameraId, new CameraCallBack(_recorder, surfaceTexture, previewSize), null);
}
public void StartCamera()
{
//アプリ起動時に,表示領域が未作成の前にStartCameraが実行されることを防ぐ
if (this.SurfaceTexture == null)
{
return;
}
StartBackgroundThread();
this._cameraManager = (CameraManager)Android.App.Application.Context.GetSystemService(Context.CameraService);
var cameraIdList = this._cameraManager.GetCameraIdList();
CameraCharacteristics cameraCharacteristics = null;
//指定のカメラのidを取得する
//フロント,バックのカメラidの取得についてはこちらを参考
//https://bellsoft.jp/blog/system/detail_538
this._cameraId = cameraIdList.FirstOrDefault(cId =>
{
cameraCharacteristics = _cameraManager.GetCameraCharacteristics(cId);
var lensFacing = (int)cameraCharacteristics.Get(CameraCharacteristics.LensFacing);
if (lensFacing == (int)this.CameraOption)
{
return(true);
}
return(false);
});
Android.Hardware.Camera2.Params.StreamConfigurationMap scm = (Android.Hardware.Camera2.Params.StreamConfigurationMap)cameraCharacteristics.Get(CameraCharacteristics.ScalerStreamConfigurationMap);
this.PreviewSize = scm.GetOutputSizes((int)ImageFormatType.Jpeg)[0];
this.SensorOrientation = (int)cameraCharacteristics.Get(CameraCharacteristics.SensorOrientation);//Back:4032*3024,Front:3264*2448
//ImageReaderの設定
this.ImageReader = ImageReader.NewInstance(480, 640, ImageFormatType.Jpeg, 1);
this.ImageReader.SetOnImageAvailableListener(this.ImageAvailableListener, this.BackgroundHandler);
this._cameraStateListener = new CameraStateListener(this);
_cameraManager.OpenCamera(_cameraId, this._cameraStateListener, null);
}