枚举 AVSampleFormat 

#[repr(i32)]
pub enum AVSampleFormat {
    AV_SAMPLE_FMT_NONE = -1,
    AV_SAMPLE_FMT_U8 = 0,
    AV_SAMPLE_FMT_S16 = 1,
    AV_SAMPLE_FMT_S32 = 2,
    AV_SAMPLE_FMT_FLT = 3,
    AV_SAMPLE_FMT_DBL = 4,
    AV_SAMPLE_FMT_U8P = 5,
    AV_SAMPLE_FMT_S16P = 6,
    AV_SAMPLE_FMT_S32P = 7,
    AV_SAMPLE_FMT_FLTP = 8,
    AV_SAMPLE_FMT_DBLP = 9,
    AV_SAMPLE_FMT_S64 = 10,
    AV_SAMPLE_FMT_S64P = 11,
    AV_SAMPLE_FMT_NB = 12,
}

Audio sample formats

• The data described by the sample format is always in native-endian order. Sample values can be expressed by native C types, hence the lack of a signed 24-bit sample format even though it is a common raw audio data format.

• The floating-point formats are based on full volume being in the range [-1.0, 1.0]. Any values outside this range are beyond full volume level.

• The data layout as used in av_samples_fill_arrays() and elsewhere in FFmpeg (such as AVFrame in libavcodec) is as follows:

@par For planar sample formats, each audio channel is in a separate data plane, and linesize is the buffer size, in bytes, for a single plane. All data planes must be the same size. For packed sample formats, only the first data plane is used, and samples for each channel are interleaved. In this case, linesize is the buffer size, in bytes, for the 1 plane.

Variants

AV_SAMPLE_FMT_NONE = -1

AV_SAMPLE_FMT_U8 = 0

< unsigned 8 bits

AV_SAMPLE_FMT_S16 = 1

< signed 16 bits

AV_SAMPLE_FMT_S32 = 2

< signed 32 bits

AV_SAMPLE_FMT_FLT = 3

< float

AV_SAMPLE_FMT_DBL = 4

< double

AV_SAMPLE_FMT_U8P = 5

< unsigned 8 bits, planar

AV_SAMPLE_FMT_S16P = 6

< signed 16 bits, planar

AV_SAMPLE_FMT_S32P = 7

< signed 32 bits, planar

AV_SAMPLE_FMT_FLTP = 8

< float, planar

AV_SAMPLE_FMT_DBLP = 9

< double, planar

AV_SAMPLE_FMT_S64 = 10

< signed 64 bits

AV_SAMPLE_FMT_S64P = 11

< signed 64 bits, planar

AV_SAMPLE_FMT_NB = 12

< Number of sample formats. DO NOT USE if linking dynamically

trait 实现

impl Clone for AVSampleFormat

fn clone(&self) -> AVSampleFormat

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 AVSampleFormat

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 AVSampleFormat

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 AVSampleFormat

fn eq(&self, other: &AVSampleFormat) -> 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 AVSampleFormat

impl Eq for AVSampleFormat

impl StructuralPartialEq for AVSampleFormat