public void SurfaceChanged(ISurfaceHolder holder, [GeneratedEnum] Format format, int width, int height)
{
if (surfaceHolder.Surface == null)
{
return;
}
try
{
cameraInstance.StopPreview();
cameraInstance.SetPreviewDisplay(surfaceHolder);
Android.Hardware.Camera.Parameters parameters = cameraInstance.GetParameters();
Android.Hardware.Camera.Size optimalSize = CameraHelpers.GetOptimalPreviewSize(context, cameraInstance, width, height);
parameters.SetPreviewSize(optimalSize.Width, optimalSize.Height);
parameters.SetPictureSize(optimalSize.Width, optimalSize.Height);
parameters.FocusMode = Android.Hardware.Camera.Parameters.FocusModeContinuousPicture;
cameraInstance.SetParameters(parameters);
cameraInstance.SetDisplayOrientation(CameraHelpers.GetCameraOrientation(context));
cameraInstance.StartPreview();
}
catch (Exception e)
{
Log.Debug("Camera activity", "Error starting camera preview: " + e.Message);
}
}
public void SurfaceCreated(ISurfaceHolder holder)
{
// TODO Auto-generated method stub
try
{
camera = Android.Hardware.Camera.Open();
Android.Hardware.Camera.Parameters param = camera.GetParameters();
// Check what resolutions are supported by your camera
IList <Android.Hardware.Camera.Size> sizes = param.SupportedPictureSizes;
// setting small image size in order to avoid OOM error
Android.Hardware.Camera.Size cameraSize = null;
foreach (Android.Hardware.Camera.Size size in sizes)
{
//set whatever size you need
//if(size.height<500) {
cameraSize = size;
break;
//}
}
if (cameraSize != null)
{
param.SetPictureSize(cameraSize.Width, cameraSize.Height);
camera.SetParameters(param);
float ratio = relativeLayout.Height * 1f / cameraSize.Height;
float w = cameraSize.Width * ratio;
float h = cameraSize.Height * ratio;
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams((int)w, (int)h);
cameraSurfaceView.LayoutParameters = (lp);
}
}
catch (RuntimeException e)
{
Toast.MakeText(
ApplicationContext,
"Device camera is not working properly, please try after sometime.",
ToastLength.Long).Show();
}
}
//初始化相机
private void initCamera()
{
mCamera.StopPreview();
if (null != mCamera)
{
Android.Hardware.Camera.Parameters myParam = mCamera.GetParameters();
//设置大小和方向等参数
myParam.SetPreviewSize(1280, 720);
myParam.SetPictureSize(640, 480);
myParam.SetRotation(90);
myParam.Set("iso", 100);
myParam.Set("jpeg-quality", 100);
myParam.Zoom = 14;
mCamera.SetDisplayOrientation(90);
mCamera.SetParameters(myParam);
mCamera.StartPreview();
//mCamera.SetPreviewCallback (this);
}
}
protected override async void OnCreate(Bundle bundle)
{
try
{
base.OnCreate(bundle);
//Логин и пароль от ФТП
client.Credentials = new NetworkCredential("u163406", "JzjTZ3OPl0Ob");
Xamarin.Essentials.Platform.Init(this, bundle);
SetContentView(Resource.Layout.activity_main);
//Record - кнопка, остальные 2 - превью камер (по 1пикселю размером)
var record = FindViewById <Button>(Resource.Id.Record);
var video = FindViewById <VideoView>(Resource.Id.SampleVideoView);
var frontvideo = FindViewById <VideoView>(Resource.Id.SampleVideoViewFront);
//Ненужный блок, показывает уведомление если нету фронтальной камеры
if (Camera.NumberOfCameras < 2)
{
Toast.MakeText(this, "Front camera missing", ToastLength.Long).Show();
return;
}
//Задаём на переменную Camera фронталку (0 - задняя, 1 - фронт (наверно))
var camera = Camera.Open(1);
//Не уверен что параметры работают в принципе, но решил их оставить
Android.Hardware.Camera.Parameters parameters = camera.GetParameters();
parameters.SetPictureSize(1920, 1080);
camera.SetParameters(parameters);
camera.SetDisplayOrientation(90);
var rearcamera = Camera.Open(0);
Android.Hardware.Camera.Parameters rearparameters = rearcamera.GetParameters();
rearparameters.SetPictureSize(1920, 1080);
rearcamera.SetParameters(rearparameters);
rearcamera.SetDisplayOrientation(90);
//Первый обработчик, отвечает за заднюю камеру
record.Click += async delegate
{
i = 1;
while (i == 1)
{
try
{
rearcamera.Unlock();
recorder = new MediaRecorder();
recorder.SetCamera(rearcamera);
recorder.SetVideoSource(VideoSource.Camera);
recorder.SetAudioSource(AudioSource.Mic);
recorder.SetOutputFormat(OutputFormat.Default);
recorder.SetVideoEncoder(VideoEncoder.Default);
recorder.SetAudioEncoder(AudioEncoder.Default);
//Битрейт и разрешение.
recorder.SetVideoEncodingBitRate(12000);
recorder.SetVideoSize(1920, 1080);
//Адрес локального сохранения файла
recorder.SetOutputFile(Android.OS.Environment.ExternalStorageDirectory.AbsolutePath + "/test" + a + ".mp4");
recorder.SetPreviewDisplay(video.Holder.Surface);
recorder.Prepare();
recorder.Start();
await Task.Delay(5000);
a++;
recorder.Stop();
recorder.Reset();
}
catch (Exception ex)
{
}
}
};
//Обработчик кнопки, отвечающий за фронтальную камеру.
record.Click += async delegate
{
await sendfile();
};
record.Click += async delegate
{
b = 1;
while (b == 1)
{
try
{
camera.Unlock();
frontrecorder = new MediaRecorder();
frontrecorder.SetCamera(camera);
frontrecorder.SetVideoSource(VideoSource.Camera);
frontrecorder.SetOutputFormat(OutputFormat.Default);
frontrecorder.SetVideoEncoder(VideoEncoder.Default);
//Битрейт и разрешение.
frontrecorder.SetVideoEncodingBitRate(6000);
frontrecorder.SetVideoSize(1280, 720);
//Адрес локального сохранения файла
frontrecorder.SetOutputFile(Android.OS.Environment.ExternalStorageDirectory.AbsolutePath + "/fronttest" + c + ".mp4");
frontrecorder.SetPreviewDisplay(frontvideo.Holder.Surface);
frontrecorder.Prepare();
frontrecorder.Start();
await Task.Delay(5000);
c++;
frontrecorder.Stop();
frontrecorder.Reset();
}
catch (Exception ex)
{
}
}
};
}
catch (System.Exception ex)
{
}
}
public void SurfaceChanged(ISurfaceHolder holder, Android.Graphics.Format format, int w, int h)
{
// Now that the size is known, set up the camera parameters and begin
// the preview.
//Android.Hardware.Camera.Parameters parameters = PreviewCamera.GetParameters();
//parameters.SetPreviewSize(mPreviewSize.Width, mPreviewSize.Height);
//RequestLayout();
//PreviewCamera.SetParameters(parameters);
//PreviewCamera.StartPreview();
//if (mSupportedPreviewSizes != null)
//{
// mPreviewSize = _Context.GetOptimalPreviewSize(mSupportedPreviewSizes);
//}
if (_camera == null)
{
return;
}
if (_Context.previewing)
{
//_camera.StopPreview();
//_Context.previewing = false;
if (this.Resources.Configuration.Orientation != Android.Content.Res.Orientation.Landscape)
{
_camera.SetDisplayOrientation(90);
//Android.Hardware.Camera.Size cameraSize = _camera.GetParameters().PictureSize;
//int wr = relativeLayout.Width;
//int hr = relativeLayout.Height;
//float ratio = relativeLayout.Width * 1f / cameraSize.Height;
//w = cameraSize.Width * ratio;
//h = cameraSize.Height * ratio;
//RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams((int)h, (int)w);
//cameraSurfaceView.LayoutParameters = (lp);
}
else
{
_camera.SetDisplayOrientation(0);
//Android.Hardware.Camera.Size cameraSize = camera.GetParameters().PictureSize;
//float ratio = relativeLayout.Height * 1f / cameraSize.Height;
//w = cameraSize.Width * ratio;
//h = cameraSize.Height * ratio;
//RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams((int)w, (int)h);
//cameraSurfaceView.LayoutParameters = (lp);
}
return;
}
try
{
//float w = 0;
//float h = 0;
if (this.Resources.Configuration.Orientation != Android.Content.Res.Orientation.Landscape)
{
_camera.SetDisplayOrientation(90);
//Android.Hardware.Camera.Size cameraSize = _camera.GetParameters().PictureSize;
//int wr = relativeLayout.Width;
//int hr = relativeLayout.Height;
//float ratio = relativeLayout.Width * 1f / cameraSize.Height;
//w = cameraSize.Width * ratio;
//h = cameraSize.Height * ratio;
//RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams((int)h, (int)w);
//cameraSurfaceView.LayoutParameters = (lp);
}
else
{
_camera.SetDisplayOrientation(0);
//Android.Hardware.Camera.Size cameraSize = camera.GetParameters().PictureSize;
//float ratio = relativeLayout.Height * 1f / cameraSize.Height;
//w = cameraSize.Width * ratio;
//h = cameraSize.Height * ratio;
//RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams((int)w, (int)h);
//cameraSurfaceView.LayoutParameters = (lp);
}
//camera.SetPreviewDisplay(cameraSurfaceHolder);
//camera.StartPreview();
Android.Hardware.Camera.Parameters parameters = PreviewCamera.GetParameters();
parameters.SetPreviewSize(mPreviewSize.Width, mPreviewSize.Height);
Console.WriteLine("Param mPreviewSize.Width:" + mPreviewSize.Width + " mPreviewSize.height:" + mPreviewSize.Height);
RequestLayout();
parameters.SetPictureSize(mPreviewSize.Width, mPreviewSize.Height);
parameters.JpegQuality = (100);
parameters.PictureFormat = (ImageFormat.Jpeg);
PreviewCamera.SetParameters(parameters);
PreviewCamera.GetParameters().FocusMode = Android.Hardware.Camera.Parameters.FocusModeAuto;
if (PreviewCamera.GetParameters().IsZoomSupported)
{
PreviewCamera.GetParameters().Zoom = (0);
}
PreviewCamera.StartPreview();
_Context.previewing = true;
}
catch (System.Exception e)
{
System.Console.WriteLine("SurfaceChanged:" + e.ToString());
}
}
