Захват и запись на TextureView с камерой2?

Question

Я пытаюсь создать простое приложение, в котором вы можете снимать изображения и записывать видео с новой камеры Android2 на поверхности TextureView, которая показывает предварительный просмотр камеры. Я создал кнопку для захвата изображения, но мне хотелось бы знать, возможно ли на одной поверхности записывать видео. Я бы не знал, как обращаться с функцией SurfaceTexture.OnFrameAvailableListener, на самом деле, я хотел бы знать, правильно ли обрабатывать запись видео таким образом.

Я попытался увидеть два примера camera2basic и camera2video, но мне не удалось запустить их в моем приложении. Наконец, я хотел спросить: возможно ли сделать снимок во время видеозаписи?

Эти два метода:

protected void takePicture() {
    if (cameraDevice == null) {
        Log.e(TAG, "cameraDevice is null");
        return;
    }
    CameraManager cameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
    try {
        CameraCharacteristics cameraCharacteristics = cameraManager.getCameraCharacteristics(cameraDevice.getId());
        Size[] jpegSizes = null;
        if (cameraCharacteristics != null)
        {
            jpegSizes = cameraCharacteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP).getOutputSizes(ImageFormat.JPEG);
        }

        int width = 640;
        int height = 480;
        if (jpegSizes != null && jpegSizes.length > 0) {
            width = jpegSizes[0].getWidth();
            height = jpegSizes[0].getHeight();
        }

        ImageReader reader = ImageReader.newInstance(width, height, ImageFormat.JPEG, 1);

        List<Surface> outputSurfaces = new ArrayList<>(2);
        outputSurfaces.add(reader.getSurface());
        outputSurfaces.add(new Surface(textureView.getSurfaceTexture()));

        final CaptureRequest.Builder captureBuilder = cameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE );
        captureBuilder.addTarget(reader.getSurface());
        //captureBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO);
        captureBuilder.set(CaptureRequest.CONTROL_AF_MODE, CameraMetadata.CONTROL_AF_MODE_CONTINUOUS_PICTURE);

        // Orientation
        int rotation = getWindowManager().getDefaultDisplay().getRotation();
        captureBuilder.set(CaptureRequest.JPEG_ORIENTATION, ORIENTATIONS.get(rotation));

        //final File file = new File(Environment. + "/picture.jpg");
        DateFormat dateFormat = new SimpleDateFormat("dd/MM/yy HH:mm:ss");
        Date today = Calendar.getInstance().getTime();
        String logDate = dateFormat.format(today);
        final File file = new File(getApplication().getExternalFilesDir(null), "pic.jpg");

        ImageReader.OnImageAvailableListener readerListener = new ImageReader.OnImageAvailableListener() {
            @Override
            public void onImageAvailable(ImageReader reader) {
                Image image = null;
                try {
                    image = reader.acquireLatestImage();
                    ByteBuffer buffer = image.getPlanes()[0].getBuffer();
                    byte[] bytes = new byte[buffer.capacity()];
                    buffer.get(bytes);
                    save(bytes);
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                } finally {
                    if (image != null) {
                        image.close();
                    }
                }
            }

            private void save(byte[] bytes) throws IOException {
                OutputStream output = null;
                try
                {
                    output = new FileOutputStream(file);
                    output.write(bytes);
                }
                finally
                {
                    if (null != output) {
                        output.close();
                    }
                }
            }
        };
        reader.setOnImageAvailableListener(readerListener, mBackgroundHandler);
        final CameraCaptureSession.CaptureCallback captureListener = new CameraCaptureSession.CaptureCallback() {
            @Override
            public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request, TotalCaptureResult result) {
                super.onCaptureCompleted(session, request, result);
                Toast.makeText(MainActivity.this, "Salvato il file:" + file, Toast.LENGTH_SHORT).show();
                createCameraPreview();
            }
        };
        cameraDevice.createCaptureSession(outputSurfaces, new CameraCaptureSession.StateCallback() {
            @Override
            public void onConfigured(CameraCaptureSession session) {
                try {
                    session.capture(captureBuilder.build(), captureListener, mBackgroundHandler);
                } catch (CameraAccessException e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void onConfigureFailed(CameraCaptureSession session) {
            }
        }, mBackgroundHandler);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}


protected void takeVideo() {
    if (cameraDevice == null) {
        Log.e(TAG, "cameraDevice is null");
        return;
    }
    CameraManager cameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
    try {
        String cameraId = cameraManager.getCameraIdList()[0];
        CameraCharacteristics cameraCharacteristics = cameraManager.getCameraCharacteristics(cameraId);

        StreamConfigurationMap scm = cameraCharacteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
            if (scm == null) {
                throw new RuntimeException("Cannot get available preview/video sizes");
            }
        scm.getOutputSizes(SurfaceTexture.class);

        SurfaceTexture texture = textureView.getSurfaceTexture();
        assert texture != null;
        texture.setDefaultBufferSize(640, 480);
        final CaptureRequest.Builder captureBuilder = cameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_RECORD );

        Surface previewSurface = new Surface(texture);
        captureBuilder.addTarget(previewSurface);

        captureBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO);

        DateFormat dateFormat = new SimpleDateFormat("dd/MM/yy HH:mm:ss");
        Date today = Calendar.getInstance().getTime();
        String logDate = dateFormat.format(today);
        final File file = new File(getApplication().getExternalFilesDir(null), "video.mp4");



        SurfaceTexture.OnFrameAvailableListener readerListener = new SurfaceTexture.OnFrameAvailableListener() {
            @Override
            public void onFrameAvailable(SurfaceTexture surfaceTexture) {

            }

            private void save(byte[] bytes) throws IOException {
                OutputStream output = null;
                try
                {
                    output = new FileOutputStream(file);
                    output.write(bytes);
                }
                finally
                {
                    if (null != output) {
                        output.close();
                    }
                }
            }
        };


        final CameraCaptureSession.CaptureCallback captureListener = new CameraCaptureSession.CaptureCallback() {
            @Override
            public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request, TotalCaptureResult result) {
                super.onCaptureCompleted(session, request, result);
                Toast.makeText(MainActivity.this, "Salvato il video:" + file, Toast.LENGTH_SHORT).show();
                createCameraPreview();
            }
        };


    }
    catch (CameraAccessException e) {
        e.printStackTrace();
    }
}