以下的代码片段是从摄像头中获取视频帧，但是里面使用到了AutoFitTextureView，这样的话就需要预览才可以获取视频帧。但是机器人识别中不需要，这样要怎么处理呢？
// 创建捕获图片session
private void createCaptureSession() {
try {
final SurfaceTexture texture = mTextureView.getSurfaceTexture();
texture.setDefaultBufferSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
final Surface surface = new Surface(texture);
final CaptureRequest.Builder captureRequestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
captureRequestBuilder.addTarget(surface);
mImageReader = ImageReader.newInstance(
mPreviewSize.getWidth(), mPreviewSize.getHeight(), ImageFormat.JPEG, 10);
mCameraDevice.createCaptureSession(
Arrays.asList(surface, mImageReader.getSurface()),
new CameraCaptureSession.StateCallback() {
@Override
public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {
if (null == mCameraDevice) {
return;
}
mCaptureSession = cameraCaptureSession;
try {
captureRequestBuilder.set(
CaptureRequest.CONTROL_AF_MODE,
CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
captureRequestBuilder.set(
CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
CaptureRequest previewRequest = captureRequestBuilder.build();
mCaptureSession.setRepeatingRequest(
previewRequest, new CameraCaptureSession.CaptureCallback() {
@Override
public void onCaptureProgressed(@NonNull CameraCaptureSession session, @NonNull CaptureRequest request, @NonNull CaptureResult partialResult) {
super.onCaptureProgressed(session, request, partialResult);
}
@Override
public void onCaptureFailed(@NonNull CameraCaptureSession session, @NonNull CaptureRequest request, @NonNull CaptureFailure failure) {
super.onCaptureFailed(session, request, failure);
Log.d(TAG, "onCaptureFailed = " + failure.getReason());
}
@Override
public void onCaptureSequenceCompleted(@NonNull CameraCaptureSession session, int sequenceId, long frameNumber) {
super.onCaptureSequenceCompleted(session, sequenceId, frameNumber);
Log.d(TAG, "onCaptureSequenceCompleted");
}
}, mCaptureHandler);
} catch (final CameraAccessException e) {
Log.e(TAG, "onConfigured exception ", e);
}
}
@Override
public void onConfigureFailed(@NonNull final CameraCaptureSession cameraCaptureSession) {
Log.e(TAG, "onConfigureFailed ");
}
},
null);
} catch (final CameraAccessException e) {
Log.e(TAG, "创建捕获图片session异常 ", e);
}
}
