Enum AudioCodec 

pub enum AudioCodec {
    AacLc,
    AacHe,
    AacHeV2,
    Mp3,
    Flac,
    Vorbis,
    Opus,
    Alac,
    Pcm,
    Adpcm,
}

Audio codec type.

Variants

AacLc

AAC Low Complexity (mp4a.40.2)

AacHe

AAC High Efficiency (mp4a.40.5)

AacHeV2

AAC HE v2 (mp4a.40.29)

Mp3

MP3 (mp4a.40.34 or audio/mpeg)

Flac

FLAC

Vorbis

Vorbis

Opus

Opus

Alac

ALAC (Apple Lossless)

Pcm

PCM

Adpcm

ADPCM

Implementations

impl AudioCodec

pub fn encoder_priming_frames(codec: Self) -> u64

Encoder-side priming silence in PCM frames added by mainstream encoders for codec when no container or encoder tag declares an explicit count. Used as a fallback by the gapless pipeline when probing yields no metadata.

Does not include any decoder-side algorithmic delay — that is per-backend (LAME-convention mpa decoders add 529 for MP3, Apple’s AudioConverter internally compensates and adds 0) and lives on the FrameCodec trait in kithara-decode.

Free-standing (AudioCodec::encoder_priming_frames(codec)) rather than codec.encoder_priming_frames() so that the match codec { ... } body does not pretend to be a From<AudioCodec> conversion — u64 here means “priming frames”, not the codec rewritten as an integer.

pub fn parse_hls_codec(codec: &str) -> Option<Self>

Parse from HLS CODECS attribute value.

Examples:

• mp4a.40.2 -> AacLc
• mp4a.40.5 -> AacHe
• mp4a.40.29 -> AacHeV2
• mp4a.40.34 -> Mp3
• mp4a.69 or mp4a.6B -> Mp3

pub fn parse_mime(mime: &str) -> Option<Self>

Parse codec from HTTP Content-Type header value.

Examples:

• audio/mpeg -> Mp3
• audio/aac -> AacLc
• audio/flac -> Flac

Trait Implementations

impl Clone for AudioCodec

fn clone(&self) -> AudioCodec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AudioCodec

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

Formats the value using the given formatter.

impl From<AudioCodec> for MediaInfo

Build MediaInfo from a codec alone, filling the container when it is implied by the codec for standalone (non-HLS) sources. AAC and Adpcm have ambiguous containers and leave container = None.

fn from(codec: AudioCodec) -> Self

Converts to this type from the input type.

impl PartialEq for AudioCodec

fn eq(&self, other: &AudioCodec) -> 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 TryFrom<&[u8]> for AudioCodec

type Error = CodecMagicError

The type returned in the event of a conversion error.

fn try_from(bytes: &[u8]) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<AudioCodec> for ContainerFormat

The codec uniquely picks a container for standalone sources. Mp3→MpegAudio, Pcm→Wav, Flac→Flac, Vorbis/Opus→Ogg, Alac→Caf. AAC (ADTS vs Mp4) and Adpcm are ambiguous and fail.

type Error = AmbiguousContainer

The type returned in the event of a conversion error.

fn try_from(codec: AudioCodec) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for AudioCodec

impl Eq for AudioCodec

impl StructuralPartialEq for AudioCodec