Enum gstreamer_audio::AudioChannelPosition

pub enum AudioChannelPosition {
    None,
    Mono,
    Invalid,
    FrontLeft,
    FrontRight,
    FrontCenter,
    Lfe1,
    RearLeft,
    RearRight,
    FrontLeftOfCenter,
    FrontRightOfCenter,
    RearCenter,
    Lfe2,
    SideLeft,
    SideRight,
    TopFrontLeft,
    TopFrontRight,
    TopFrontCenter,
    TopCenter,
    TopRearLeft,
    TopRearRight,
    TopSideLeft,
    TopSideRight,
    TopRearCenter,
    BottomFrontCenter,
    BottomFrontLeft,
    BottomFrontRight,
    WideLeft,
    WideRight,
    SurroundLeft,
    SurroundRight,
    // some variants omitted
}

Audio channel positions.

These are the channels defined in SMPTE 2036-2-2008 Table 1 for 22.2 audio systems with the Surround and Wide channels from DTS Coherent Acoustics (v.1.3.1) and 10.2 and 7.1 layouts. In the caps the actual channel layout is expressed with a channel count and a channel mask, which describes the existing channels. The positions in the bit mask correspond to the enum values. For negotiation it is allowed to have more bits set in the channel mask than the number of channels to specify the allowed channel positions but this is not allowed in negotiated caps. It is not allowed in any situation other than the one mentioned below to have less bits set in the channel mask than the number of channels.

AudioChannelPosition::Mono can only be used with a single mono channel that has no direction information and would be mixed into all directional channels. This is expressed in caps by having a single channel and no channel mask.

AudioChannelPosition::None can only be used if all channels have this position. This is expressed in caps by having a channel mask with no bits set.

As another special case it is allowed to have two channels without a channel mask. This implicitely means that this is a stereo stream with a front left and front right channel.

Variants

NoneMonoInvalidFrontLeftFrontRightFrontCenterLfe1RearLeftRearRightFrontLeftOfCenterFrontRightOfCenterRearCenterLfe2SideLeftSideRightTopFrontLeftTopFrontRightTopFrontCenterTopCenterTopRearLeftTopRearRightTopSideLeftTopSideRightTopRearCenterBottomFrontCenterBottomFrontLeftBottomFrontRightWideLeftWideRightSurroundLeftSurroundRight

Methods

impl AudioChannelPosition

pub fn to_mask(self) -> u64

pub fn positions_to_mask(     positions: &[AudioChannelPosition],     force_order: bool ) -> Option<u64>

pub fn positions_from_mask(     mask: u64,     positions: &mut [AudioChannelPosition] ) -> Result<(), BoolError>

pub fn positions_to_valid_order(     positions: &mut [AudioChannelPosition] ) -> Result<(), BoolError>

pub fn get_fallback_mask(channels: u32) -> u64

pub fn check_valid_channel_positions(     positions: &[AudioChannelPosition],     force_order: bool ) -> bool

Trait Implementations

impl Debug for AudioChannelPosition

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

Formats the value using the given formatter.

impl Eq for AudioChannelPosition

impl PartialEq for AudioChannelPosition

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Ord for AudioChannelPosition

fn cmp(&self, other: &AudioChannelPosition) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl PartialOrd for AudioChannelPosition

fn partial_cmp(&self, other: &AudioChannelPosition) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &AudioChannelPosition) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &AudioChannelPosition) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &AudioChannelPosition) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &AudioChannelPosition) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Hash for AudioChannelPosition

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].

impl Clone for AudioChannelPosition

fn clone(&self) -> AudioChannelPosition

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for AudioChannelPosition

impl StaticType for AudioChannelPosition

fn static_type() -> Type

Returns the type identifier of Self.

impl<'a> FromValueOptional<'a> for AudioChannelPosition

unsafe fn from_value_optional(value: &Value) -> Option<Self>

impl<'a> FromValue<'a> for AudioChannelPosition

unsafe fn from_value(value: &Value) -> Self

impl SetValue for AudioChannelPosition

unsafe fn set_value(value: &mut Value, this: &Self)