안드로이드 카메라2 API OnImageAvailableListener 질문입니다.

Question

ImageReader의 OnImageAvailableListener함수에서 onImageAvailable안에서 이미지 데이터를 받아와서 직접 처리하고 싶은데 onImageAvailable 함수가 호출이 안되는것 같아서 질문드립니다..

 

앱 실행하고 카메라 preview까지는 잘 출력하는데 어떻게 해야 onImageAvailable 함수를 호출할 수 있을까요??

 

private void showCameraPreview() {
        try {
            SurfaceTexture texture = mTextureView.getSurfaceTexture();
            texture.setDefaultBufferSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
            Surface textureViewSurface = new Surface(texture);

            mCaptureRequestBuilder = mCamera.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
            mCaptureRequestBuilder.addTarget(textureViewSurface);
            mCaptureRequestBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO);

            mImageReaderPreview = ImageReader.newInstance(mPreviewSize.getWidth(), mPreviewSize.getHeight(), ImageFormat.YUV_420_888, 10);

            final ImageReader.OnImageAvailableListener readerListener = new ImageReader.OnImageAvailableListener() {
                @Override
                public void onImageAvailable(ImageReader reader) {
                    Log.e("ImageReader", "onImageAvailable");
                    Image mImage = reader.acquireNextImage();
//                    if(mImage == null) return;
//                    convertYUV420888ToNV21(mImage);
//                    mFrameProcessor.setNextFrame(convertYUV420888ToNV21(mImage));
                    mImage.close();
                }
            };
            mImageReaderPreview.setOnImageAvailableListener(readerListener, null);

//            final CameraCaptureSession.CaptureCallback captureListener = new CameraCaptureSession.CaptureCallback() {
//                @Override
//                public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request, TotalCaptureResult result) {
//                    super.onCaptureCompleted(session, request, result);
//                    Log.e("captureListener", "onCaptureCompleted");
//                }
//            };

            mCamera.createCaptureSession(Arrays.asList(textureViewSurface, mImageReaderPreview.getSurface()), new CameraCaptureSession.StateCallback() {
                @Override
                public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {
                    try {
                        mCameraSession = cameraCaptureSession;
//                        mCameraSession.setRepeatingRequest(mCaptureRequestBuilder.build(), captureListener, null);
                        mCameraSession.setRepeatingRequest(mCaptureRequestBuilder.build(), null, null);
                    } catch (CameraAccessException e) {
                        Log.e("tag", "MMM onConfigured", e);
                    }
                }

                @Override
                public void onConfigureFailed(@NonNull CameraCaptureSession cameraCaptureSession) {
                    Log.e("tag", "MMM onConfigureFailed");
                }
            }, null);
        } catch (CameraAccessException e) {
            Log.e("tag", "MMM showCameraPreview ", e);
        }
    }