Struct Chmap 

pub struct Chmap {
    pub mode: ChmapMode,
    pub entries: Vec<ChmapEntry>,
}

The data to express channel map of PCM substream in TLV (Type-Length-Value) of ALSA control interface.

It has three variants below;

• SNDRV_CTL_TLVT_CHMAP_FIXED (=0x101)
• SNDRV_CTL_TLVT_CHMAP_VAR (=0x102)
• SNDRV_CTL_TLVT_CHMAP_PAIRED (=0x103)

The length of value field is variable depending on the number of channels.

Fields

mode: ChmapMode

The mode of map.

entries: Vec<ChmapEntry>

The entries of map corresponding to each channel.

Trait Implementations

impl Clone for Chmap

fn clone(&self) -> Chmap

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Chmap

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Chmap

fn default() -> Chmap

Returns the “default value” for a type.

impl From<&Chmap> for Vec<u32>

fn from(data: &Chmap) -> Self

Converts to this type from the input type.

impl From<Chmap> for Vec<u32>

fn from(data: Chmap) -> Self

Converts to this type from the input type.

impl PartialEq for Chmap

fn eq(&self, other: &Chmap) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> TlvData<'a> for Chmap

fn value_type(&self) -> u32

Return the value of type field. It should come from UAPI of Linux kernel.

fn value_length(&self) -> usize

Return the length of value field. It should be in byte unit and multiples of 4 as result.

fn value(&self) -> Vec<u32>

Generate vector with u32 element for raw data.

impl TryFrom<&[u32]> for Chmap

type Error = TlvDecodeError

The type returned in the event of a conversion error.

fn try_from(raw: &[u32]) -> Result<Self, Self::Error>

Performs the conversion.

impl Eq for Chmap

impl StructuralPartialEq for Chmap