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Refactor JavaCamera2View to add option to override Camera2 session request options.

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Co-authored-by: Maksim Shabunin <maksim.shabunin@gmail.com>
pull/24649/head
Alexander Smorkalov 1 year ago
parent 903b66906e
commit 938951f4f0
1 changed files with 32 additions and 29 deletions
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  1. 61
      modules/java/generator/android-21/java/org/opencv/android/JavaCamera2View.java

61
modules/java/generator/android-21/java/org/opencv/android/JavaCamera2View.java
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@ -45,6 +45,7 @@ public class JavaCamera2View extends CameraBridgeViewBase {
protected ImageReader mImageReader;
protected int mPreviewFormat = ImageFormat.YUV_420_888;
protected int mRequestTemplate = CameraDevice.TEMPLATE_PREVIEW;
protected CameraDevice mCameraDevice;
protected CameraCaptureSession mCaptureSession;
@ -155,6 +156,35 @@ public class JavaCamera2View extends CameraBridgeViewBase {
};
protected CameraCaptureSession.StateCallback allocateSessionStateCallback() {
return new CameraCaptureSession.StateCallback() {
@Override
public void onConfigured(CameraCaptureSession cameraCaptureSession) {
Log.i(LOGTAG, "createCaptureSession::onConfigured");
if (null == mCameraDevice) {
return; // camera is already closed
}
mCaptureSession = cameraCaptureSession;
try {
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE,
CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE,
CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
mCaptureSession.setRepeatingRequest(mPreviewRequestBuilder.build(), null, mBackgroundHandler);
Log.i(LOGTAG, "CameraPreviewSession has been started");
} catch (Exception e) {
Log.e(LOGTAG, "createCaptureSession failed", e);
}
}
@Override
public void onConfigureFailed(CameraCaptureSession cameraCaptureSession) {
Log.e(LOGTAG, "createCameraPreviewSession failed");
}
};
}
private void createCameraPreviewSession() {
final int w = mPreviewSize.getWidth(), h = mPreviewSize.getHeight();
Log.i(LOGTAG, "createCameraPreviewSession(" + w + "x" + h + ")");
@ -191,38 +221,11 @@ public class JavaCamera2View extends CameraBridgeViewBase {
}, mBackgroundHandler);
Surface surface = mImageReader.getSurface();
mPreviewRequestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
mPreviewRequestBuilder = mCameraDevice.createCaptureRequest(mRequestTemplate);
mPreviewRequestBuilder.addTarget(surface);
mCameraDevice.createCaptureSession(Arrays.asList(surface),
new CameraCaptureSession.StateCallback() {
@Override
public void onConfigured(CameraCaptureSession cameraCaptureSession) {
Log.i(LOGTAG, "createCaptureSession::onConfigured");
if (null == mCameraDevice) {
return; // camera is already closed
}
mCaptureSession = cameraCaptureSession;
try {
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE,
CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE,
CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
mCaptureSession.setRepeatingRequest(mPreviewRequestBuilder.build(), null, mBackgroundHandler);
Log.i(LOGTAG, "CameraPreviewSession has been started");
} catch (Exception e) {
Log.e(LOGTAG, "createCaptureSession failed", e);
}
}
@Override
public void onConfigureFailed(CameraCaptureSession cameraCaptureSession) {
Log.e(LOGTAG, "createCameraPreviewSession failed");
}
},
null
);
allocateSessionStateCallback(), null);
} catch (CameraAccessException e) {
Log.e(LOGTAG, "createCameraPreviewSession", e);
}

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