pub fn new(channels: u32, rate: u32, mode: Mode) -> Result<Self, Error> {
        if channels == 0 || channels > MAX_CHANNELS {
            return Err(Error::NoMem);
        }

        if rate < 16 || rate > MAX_RATE {
            return Err(Error::NoMem);
        }

        let sample_peak = vec![0.0; channels as usize];
        let true_peak = vec![0.0; channels as usize];

        let history = std::usize::MAX;
        let samples_in_100ms = (rate as usize + 5) / 10;

        let window = if mode.contains(Mode::S) {
            3000
        } else if mode.contains(Mode::M) {
            400
        } else {
            return Err(Error::InvalidMode);
        };

        let audio_data = Self::allocate_audio_data(channels, rate, window)?;
        // start at the beginning of the buffer
        let audio_data_index = 0;

        let block_energy_history =
            crate::history::History::new(mode.contains(Mode::HISTOGRAM), history / 100);

        let short_term_block_energy_history =
            crate::history::History::new(mode.contains(Mode::HISTOGRAM), history / 3000);
        let short_term_frame_counter = 0;

        let filter = crate::filter::Filter::new(
            rate,
            channels,
            mode.contains(Mode::SAMPLE_PEAK),
            mode.contains(Mode::TRUE_PEAK),
        );

        let channel_map = default_channel_map(channels);

        // the first block needs 400ms of audio data
        let needed_frames = samples_in_100ms * 4;

        Ok(Self {
            mode,
            rate,
            channels,
            audio_data,
            audio_data_index,
            needed_frames,
            channel_map: channel_map.into_boxed_slice(),
            samples_in_100ms,
            filter,
            block_energy_history,
            short_term_block_energy_history,
            short_term_frame_counter,
            sample_peak: sample_peak.into_boxed_slice(),
            true_peak: true_peak.into_boxed_slice(),
            window,
            history,
        })
    }
/// Create a new instance with the given configuration.
Create a new instance with the given configuration.
Create a new instance with the given configuration .
pub fn new(channels: u32, rate: u32, mode: Mode) -> Result<Self, Error> {
        if channels == 0 || channels > MAX_CHANNELS {
            return Err(Error::NoMem);
        }
        if rate < 16 || rate > MAX_RATE {
            return Err(Error::NoMem);
        }
        let sample_peak = vec![0.0; channels as usize];
        let true_peak = vec![0.0; channels as usize];
        let history = std::usize::MAX;
        let samples_in_100ms = (rate as usize + 5) / 10;
        let window = if mode.contains(Mode::S) {
            3000
        } else if mode.contains(Mode::M) {
            400
        } else {
            return Err(Error::InvalidMode);
        };
        let audio_data = Self::allocate_audio_data(channels, rate, window)?;
        // start at the beginning of the buffer
        let audio_data_index = 0;
        let block_energy_history =
            crate::history::History::new(mode.contains(Mode::HISTOGRAM), history / 100);
        let short_term_block_energy_history =
            crate::history::History::new(mode.contains(Mode::HISTOGRAM), history / 3000);
        let short_term_frame_counter = 0;
        let filter = crate::filter::Filter::new(
            rate,
            channels,
            mode.contains(Mode::SAMPLE_PEAK),
            mode.contains(Mode::TRUE_PEAK),
        );
        let channel_map = default_channel_map(channels);
        // the first block needs 400ms of audio data
        let needed_frames = samples_in_100ms * 4;
        Ok(Self {
            mode,
            rate,
            channels,
            audio_data,
            audio_data_index,
            needed_frames,
            channel_map: channel_map.into_boxed_slice(),
            samples_in_100ms,
            filter,
            block_energy_history,
            short_term_block_energy_history,
            short_term_frame_counter,
            sample_peak: sample_peak.into_boxed_slice(),
            true_peak: true_peak.into_boxed_slice(),
            window,
            history,
        })
    }
pub fn new ( channels : u32 , rate : u32 , mode : Mode ) -> Result < Self , Error > { if channels == 0 || channels > MAX_CHANNELS { return Err ( Error :: NoMem ) ; } if rate < 16 || rate > MAX_RATE { return Err ( Error :: NoMem ) ; } let sample_peak = vec ! [ 0.0 channels as usize ] ; let true_peak = vec ! [ 0.0 channels as usize ] ; let history = std :: usize :: MAX ; let samples_in_100ms = ( rate as usize + 5 ) / 10 ; let window = if mode . contains ( Mode :: S ) { 3000 } else if mode . contains ( Mode :: M ) { 400 } else { return Err ( Error :: InvalidMode ) ; } ; let audio_data = Self :: allocate_audio_data ( channels , rate , window ) ? ; // start at the beginning of the buffer let audio_data_index = 0 ; let block_energy_history = crate :: history :: History :: new ( mode . contains ( Mode :: HISTOGRAM ) , history / 100 ) ; let short_term_block_energy_history = crate :: history :: History :: new ( mode . contains ( Mode :: HISTOGRAM ) , history / 3000 ) ; let short_term_frame_counter = 0 ; let filter = crate :: filter :: Filter :: new ( rate , channels , mode . contains ( Mode :: SAMPLE_PEAK ) , mode . contains ( Mode :: TRUE_PEAK ) , ) ; let channel_map = default_channel_map ( channels ) ; // the first block needs 400ms of audio data let needed_frames = samples_in_100ms * 4 ; Ok ( Self { mode , rate , channels , audio_data , audio_data_index , needed_frames , channel_map : channel_map . into_boxed_slice ( ) , samples_in_100ms , filter , block_energy_history , short_term_block_energy_history , short_term_frame_counter , sample_peak : sample_peak . into_boxed_slice ( ) , true_peak : true_peak . into_boxed_slice ( ) , window , history , } ) }
Create a new instance with the given configuration.
Create a new instance with the given configuration .
channels
u32
rate
u32
mode
Mode
channels
u32
rate
u32
mode
Mode