枚举 AVChannel 

#[repr(i32)]
pub enum AVChannel {
    AV_CHAN_NONE = -1,
    AV_CHAN_FRONT_LEFT = 0,
    AV_CHAN_FRONT_RIGHT = 1,
    AV_CHAN_FRONT_CENTER = 2,
    AV_CHAN_LOW_FREQUENCY = 3,
    AV_CHAN_BACK_LEFT = 4,
    AV_CHAN_BACK_RIGHT = 5,
    AV_CHAN_FRONT_LEFT_OF_CENTER = 6,
    AV_CHAN_FRONT_RIGHT_OF_CENTER = 7,
    AV_CHAN_BACK_CENTER = 8,
    AV_CHAN_SIDE_LEFT = 9,
    AV_CHAN_SIDE_RIGHT = 10,
    AV_CHAN_TOP_CENTER = 11,
    AV_CHAN_TOP_FRONT_LEFT = 12,
    AV_CHAN_TOP_FRONT_CENTER = 13,
    AV_CHAN_TOP_FRONT_RIGHT = 14,
    AV_CHAN_TOP_BACK_LEFT = 15,
    AV_CHAN_TOP_BACK_CENTER = 16,
    AV_CHAN_TOP_BACK_RIGHT = 17,
    AV_CHAN_STEREO_LEFT = 29,
    AV_CHAN_STEREO_RIGHT = 30,
    AV_CHAN_WIDE_LEFT = 31,
    AV_CHAN_WIDE_RIGHT = 32,
    AV_CHAN_SURROUND_DIRECT_LEFT = 33,
    AV_CHAN_SURROUND_DIRECT_RIGHT = 34,
    AV_CHAN_LOW_FREQUENCY_2 = 35,
    AV_CHAN_TOP_SIDE_LEFT = 36,
    AV_CHAN_TOP_SIDE_RIGHT = 37,
    AV_CHAN_BOTTOM_FRONT_CENTER = 38,
    AV_CHAN_BOTTOM_FRONT_LEFT = 39,
    AV_CHAN_BOTTOM_FRONT_RIGHT = 40,
    AV_CHAN_SIDE_SURROUND_LEFT = 41,
    AV_CHAN_SIDE_SURROUND_RIGHT = 42,
    AV_CHAN_TOP_SURROUND_LEFT = 43,
    AV_CHAN_TOP_SURROUND_RIGHT = 44,
    AV_CHAN_BINAURAL_LEFT = 61,
    AV_CHAN_BINAURAL_RIGHT = 62,
    AV_CHAN_UNUSED = 512,
    AV_CHAN_UNKNOWN = 768,
    AV_CHAN_AMBISONIC_BASE = 1_024,
    AV_CHAN_AMBISONIC_END = 2_047,
}

@defgroup lavu_audio_channels Audio channels @ingroup lavu_audio

Audio channel layout utility functions

@{

Variants

AV_CHAN_NONE = -1

Invalid channel index

AV_CHAN_FRONT_LEFT = 0

Invalid channel index

AV_CHAN_FRONT_RIGHT = 1

Invalid channel index

AV_CHAN_FRONT_CENTER = 2

Invalid channel index

AV_CHAN_LOW_FREQUENCY = 3

Invalid channel index

AV_CHAN_BACK_LEFT = 4

Invalid channel index

AV_CHAN_BACK_RIGHT = 5

Invalid channel index

AV_CHAN_FRONT_LEFT_OF_CENTER = 6

Invalid channel index

AV_CHAN_FRONT_RIGHT_OF_CENTER = 7

Invalid channel index

AV_CHAN_BACK_CENTER = 8

Invalid channel index

AV_CHAN_SIDE_LEFT = 9

Invalid channel index

AV_CHAN_SIDE_RIGHT = 10

Invalid channel index

AV_CHAN_TOP_CENTER = 11

Invalid channel index

AV_CHAN_TOP_FRONT_LEFT = 12

Invalid channel index

AV_CHAN_TOP_FRONT_CENTER = 13

Invalid channel index

AV_CHAN_TOP_FRONT_RIGHT = 14

Invalid channel index

AV_CHAN_TOP_BACK_LEFT = 15

Invalid channel index

AV_CHAN_TOP_BACK_CENTER = 16

Invalid channel index

AV_CHAN_TOP_BACK_RIGHT = 17

Invalid channel index

AV_CHAN_STEREO_LEFT = 29

Stereo downmix.

AV_CHAN_STEREO_RIGHT = 30

See above.

AV_CHAN_WIDE_LEFT = 31

See above.

AV_CHAN_WIDE_RIGHT = 32

See above.

AV_CHAN_SURROUND_DIRECT_LEFT = 33

See above.

AV_CHAN_SURROUND_DIRECT_RIGHT = 34

See above.

AV_CHAN_LOW_FREQUENCY_2 = 35

See above.

AV_CHAN_TOP_SIDE_LEFT = 36

See above.

AV_CHAN_TOP_SIDE_RIGHT = 37

See above.

AV_CHAN_BOTTOM_FRONT_CENTER = 38

See above.

AV_CHAN_BOTTOM_FRONT_LEFT = 39

See above.

AV_CHAN_BOTTOM_FRONT_RIGHT = 40

See above.

AV_CHAN_SIDE_SURROUND_LEFT = 41

< +90 degrees, Lss, SiL

AV_CHAN_SIDE_SURROUND_RIGHT = 42

< -90 degrees, Rss, SiR

AV_CHAN_TOP_SURROUND_LEFT = 43

< +110 degrees, Lvs, TpLS

AV_CHAN_TOP_SURROUND_RIGHT = 44

< -110 degrees, Rvs, TpRS

AV_CHAN_BINAURAL_LEFT = 61

AV_CHAN_BINAURAL_RIGHT = 62

AV_CHAN_UNUSED = 512

Channel is empty can be safely skipped.

AV_CHAN_UNKNOWN = 768

Channel contains data, but its position is unknown.

AV_CHAN_AMBISONIC_BASE = 1_024

Range of channels between AV_CHAN_AMBISONIC_BASE and AV_CHAN_AMBISONIC_END represent Ambisonic components using the ACN system.

Given a channel id <i> between AV_CHAN_AMBISONIC_BASE and AV_CHAN_AMBISONIC_END (inclusive), the ACN index of the channel <n> is <n> = <i> - AV_CHAN_AMBISONIC_BASE.

@note these values are only used for AV_CHANNEL_ORDER_CUSTOM channel orderings, the AV_CHANNEL_ORDER_AMBISONIC ordering orders the channels implicitly by their position in the stream.

AV_CHAN_AMBISONIC_END = 2_047

Range of channels between AV_CHAN_AMBISONIC_BASE and AV_CHAN_AMBISONIC_END represent Ambisonic components using the ACN system.

Given a channel id <i> between AV_CHAN_AMBISONIC_BASE and AV_CHAN_AMBISONIC_END (inclusive), the ACN index of the channel <n> is <n> = <i> - AV_CHAN_AMBISONIC_BASE.

@note these values are only used for AV_CHANNEL_ORDER_CUSTOM channel orderings, the AV_CHANNEL_ORDER_AMBISONIC ordering orders the channels implicitly by their position in the stream.

trait 实现

impl Clone for AVChannel

fn clone(&self) -> AVChannel

Returns a duplicate of the value. 阅读更多

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

从 source 执行拷贝赋值。 阅读更多

impl Debug for AVChannel

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

使用给定的格式化器格式化该值。 阅读更多

impl Hash for AVChannel

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

Feeds this value into the given Hasher. 阅读更多

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. 阅读更多

impl PartialEq for AVChannel

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

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

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

测试 !=。默认实现几乎总是足够的，没有充分理由不应被重写。

impl Copy for AVChannel

impl Eq for AVChannel

impl StructuralPartialEq for AVChannel