audiochip.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:2k
- #ifndef AUDIOCHIP_H
- #define AUDIOCHIP_H
- /* ---------------------------------------------------------------------- */
- #define MIN(a,b) (((a)>(b))?(b):(a))
- #define MAX(a,b) (((a)>(b))?(a):(b))
- /* v4l device was opened in Radio mode */
- #define AUDC_SET_RADIO _IO('m',2)
- /* select from TV,radio,extern,MUTE */
- #define AUDC_SET_INPUT _IOW('m',17,int)
- /* audio inputs */
- #define AUDIO_TUNER 0x00
- #define AUDIO_RADIO 0x01
- #define AUDIO_EXTERN 0x02
- #define AUDIO_INTERN 0x03
- #define AUDIO_OFF 0x04
- #define AUDIO_ON 0x05
- #define AUDIO_MUTE 0x80
- #define AUDIO_UNMUTE 0x81
- /* all the stuff below is obsolete and just here for reference. I'll
- * remove it once the driver is tested and works fine.
- *
- * Instead creating alot of tiny API's for all kinds of different
- * chips, we'll just pass throuth the v4l ioctl structs (v4l2 not
- * yet...). It is a bit less flexible, but most/all used i2c chips
- * make sense in v4l context only. So I think that's acceptable...
- */
- #if 0
- /* TODO (if it is ever [to be] accessible in the V4L[2] spec):
- * maybe fade? (back/front)
- * notes:
- * NEWCHANNEL and SWITCH_MUTE are here because the MSP3400 has a special
- * routine to go through when it tunes in to a new channel before turning
- * back on the sound.
- * Either SET_RADIO, NEWCHANNEL, and SWITCH_MUTE or SET_INPUT need to be
- * implemented (MSP3400 uses SET_RADIO to select inputs, and SWITCH_MUTE for
- * channel-change mute -- TEA6300 et al use SET_AUDIO to select input [TV,
- * radio, external, or MUTE]). If both methods are implemented, you get a
- * cookie for doing such a good job! :)
- */
- #define AUDC_SET_TVNORM _IOW('m',1,int) /* TV mode + PAL/SECAM/NTSC */
- #define AUDC_NEWCHANNEL _IO('m',3) /* indicate new chan - off mute */
- #define AUDC_GET_VOLUME_LEFT _IOR('m',4,__u16)
- #define AUDC_GET_VOLUME_RIGHT _IOR('m',5,__u16)
- #define AUDC_SET_VOLUME_LEFT _IOW('m',6,__u16)
- #define AUDC_SET_VOLUME_RIGHT _IOW('m',7,__u16)
- #define AUDC_GET_STEREO _IOR('m',8,__u16)
- #define AUDC_SET_STEREO _IOW('m',9,__u16)
- #define AUDC_GET_DC _IOR('m',10,__u16)/* ??? */
- #define AUDC_GET_BASS _IOR('m',11,__u16)
- #define AUDC_SET_BASS _IOW('m',12,__u16)
- #define AUDC_GET_TREBLE _IOR('m',13,__u16)
- #define AUDC_SET_TREBLE _IOW('m',14,__u16)
- #define AUDC_GET_UNIT _IOR('m',15,int) /* ??? - unimplemented in MSP3400 */
- #define AUDC_SWITCH_MUTE _IO('m',16) /* turn on mute */
- #endif
- #endif /* AUDIOCHIP_H */