在device\rockchip\common\external_camera_config.xml中修改如下：
<ExternalCamera> <Provider> <ignore> <!-- Internal video devices to be ignored by external camera HAL --> <!-- <id>0</id> --> <!-- No leading/trailing spaces --> </ignore> </Provider> <!-- See ExternalCameraUtils.cpp for default values of Device configurations below--> <Device> <!-- Max JPEG buffer size in bytes--> <MaxJpegBufferSize bytes="3145728"/> <!-- 3MB (~= 1080p YUV420) --> <!-- Size of v4l2 buffer queue when streaming >= 30fps --> <!-- Larger value: more request can be cached pipeline (less janky) -->
