1V4L2_TUNER_MODE_MONO
2V4L2_TUNER_MODE_STEREO
3V4L2_TUNER_MODE_LANG2
4V4L2_TUNER_MODE_SAP
5V4L2_TUNER_MODE_LANG1
6V4L2_TUNER_MODE_LANG1_LANG2
7