Struct dsf::FmtChunk

pub struct FmtChunk { /* fields omitted */ }

The fmt chunk contains information about the audio format.

• Channel type: mono, stereo, 5.1, etc.
• Channel number: 1 for mono, 2 for stereo, etc.
• Sampling frequency: the DSD sampling frequency.
• Bits per sample: whether the samples are big or little endian encoded.
• Block size per channel: this should always be 4096 bytes.

Methods

impl FmtChunk

pub fn channel_type(&self) -> &ChannelType

Return a reference to the ChannelType.

pub fn channel_num(&self) -> u32

Return the number of channels. This should be in the range 1 to 6.

pub fn sampling_frequency(&self) -> u32

Return the sampling freqency. DSD sampling frequencies are much higher than PCM because of the 1-bit sampling, so you should get values like:

• 2822400 Hz for DSD64
• 5644800 Hz for DSD128
• 11289600 Hz for DSD256

and so on.

pub fn bits_per_sample(&self) -> u32

Returns the bits_per_sample field. This is a bit of a misnomer in my opinion, but that’s what’s in the DSF specification. If it is equal to 1 then the sample data is stored least significant bit first. If it is equal to 8 then the sample data is stored most significant bit first.

pub fn sample_count(&self) -> u64

Return the number of DSD samples per channel.

pub fn block_size_per_channel(&self) -> u32

Return the block size per channel in bytes. This is fixed and should always be 4096 bytes.

Trait Implementations

impl Display for FmtChunk

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

Formats the value using the given formatter.

impl TryFrom<[u8; 52]> for FmtChunk

type Error = Error

The type returned in the event of a conversion error.

fn try_from(buffer: [u8; 52]) -> Result<Self, Self::Error>

Performs the conversion.