Enum AudioEncoding 

#[non_exhaustive]
pub enum AudioEncoding {
    Unspecified,
    Linear16,
    Flac,
    Mulaw,
    Amr,
    AmrWb,
    OggOpus,
    SpeexWithHeaderByte,
    Alaw,
    UnknownValue(UnknownValue),
}

Available on crate features conversation-profiles or conversations or participants or sessions only.

Audio encoding of the audio content sent in the conversational query request. Refer to the Cloud Speech API documentation for more details.

Working with unknown values

This enum is defined as #[non_exhaustive] because Google Cloud may add additional enum variants at any time. Adding new variants is not considered a breaking change. Applications should write their code in anticipation of:

• New values appearing in future releases of the client library, and
• New values received dynamically, without application changes.

Please consult the Working with enums section in the user guide for some guidelines.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Unspecified

Not specified.

Linear16

Uncompressed 16-bit signed little-endian samples (Linear PCM).

Flac

FLAC (Free Lossless Audio Codec) is the recommended encoding because it is lossless (therefore recognition is not compromised) and requires only about half the bandwidth of LINEAR16. FLAC stream encoding supports 16-bit and 24-bit samples, however, not all fields in STREAMINFO are supported.

Mulaw

8-bit samples that compand 14-bit audio samples using G.711 PCMU/mu-law.

Amr

Adaptive Multi-Rate Narrowband codec. sample_rate_hertz must be 8000.

AmrWb

Adaptive Multi-Rate Wideband codec. sample_rate_hertz must be 16000.

OggOpus

Opus encoded audio frames in Ogg container (OggOpus). sample_rate_hertz must be 16000.

SpeexWithHeaderByte

Although the use of lossy encodings is not recommended, if a very low bitrate encoding is required, OGG_OPUS is highly preferred over Speex encoding. The Speex encoding supported by Dialogflow API has a header byte in each block, as in MIME type audio/x-speex-with-header-byte. It is a variant of the RTP Speex encoding defined in RFC 5574. The stream is a sequence of blocks, one block per RTP packet. Each block starts with a byte containing the length of the block, in bytes, followed by one or more frames of Speex data, padded to an integral number of bytes (octets) as specified in RFC 5574. In other words, each RTP header is replaced with a single byte containing the block length. Only Speex wideband is supported. sample_rate_hertz must be 16000.

Alaw

8-bit samples that compand 13-bit audio samples using G.711 PCMU/a-law.

UnknownValue(UnknownValue)

If set, the enum was initialized with an unknown value.

Applications can examine the value using AudioEncoding::value or AudioEncoding::name.

Implementations

impl AudioEncoding

pub fn value(&self) -> Option<i32>

Gets the enum value.

Returns None if the enum contains an unknown value deserialized from the string representation of enums.

pub fn name(&self) -> Option<&str>

Gets the enum value as a string.

Returns None if the enum contains an unknown value deserialized from the integer representation of enums.

Trait Implementations

impl Clone for AudioEncoding

fn clone(&self) -> AudioEncoding

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AudioEncoding

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

Formats the value using the given formatter.

impl Default for AudioEncoding

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for AudioEncoding

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for AudioEncoding

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

Formats the value using the given formatter.

impl From<&str> for AudioEncoding

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<i32> for AudioEncoding

fn from(value: i32) -> Self

Converts to this type from the input type.

impl PartialEq for AudioEncoding

fn eq(&self, other: &AudioEncoding) -> 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 Serialize for AudioEncoding

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for AudioEncoding