alsa_ioctl 0.1.0

ioctl bindings for alsa
Documentation 
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// Source:
/*
#define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
#define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
#define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
#define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
#define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
    (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
     (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
       SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
 */

pub struct Version {
    val: u32,
}

impl Version {
    pub fn new(major: u32, minor: u32, subminor: u32) -> Self {
        let val = ((major) << 16) | ((minor) << 8) | (subminor);
        Self { val }
    }

    pub fn from_val(val: u32) -> Self {
        Self { val }
    }

    pub fn val(&self) -> u32 {
        self.val
    }

    pub fn major(&self) -> u32 {
        (self.val >> 16) & 0xffff
    }

    pub fn minor(&self) -> u32 {
        (self.val >> 8) & 0xff
    }

    pub fn subminor(&self) -> u32 {
        self.val & 0xff
    }

    pub fn check_protocol_incompatible(&self, version: Self) -> bool {
        let kmajor = self.major();
        let kminor = self.minor();

        let umajor = version.major();
        let uminor = version.minor();

        kmajor != umajor || kminor != uminor
    }
}