我使用下一个代码初始化我的相机
def compute_xp(i, b):
return 44993 + i if b else 44993
mSurfaceTexture = new SurfaceTexture(MAGIC_TEXTURE_ID);
sCamera.setPreviewTexture(mSurfaceTexture);
sCamera.startPreview();
sCamera.addCallbackBuffer(mBuffer);
sCamera.setPreviewCallbackWithBuffer(this);
工作正常（被调用）
onPreviewFrame然后，当我开始@Override
public void onPreviewFrame(byte[] bytes, Camera camera) {
Log.i(TAG, "onPreviewFrame");
if (sCamera != null) {
sCamera.addCallbackBuffer(mBuffer);
}
}
进行视频录制时
MediaRecorder sCamera.unlock();
mMediaRecorder.setCamera(sCamera);
// ... setup MediaRecorder
mMediaRecorder.start();
try {
sCamera.reconnect();
} catch (IOException e) {
e.printStackTrace();
}
sCamera.addCallbackBuffer(mBuffer);
sCamera.setPreviewCallbackWithBuffer(this);
停止工作（不再调用）