Struct BelaInitSettings 

#[repr(C)]
pub struct BelaInitSettings {

    pub periodSize: c_int,
    pub useAnalog: c_int,
    pub useDigital: c_int,
    pub numAudioInChannels: c_int,
    pub numAudioOutChannels: c_int,
    pub numAnalogInChannels: c_int,
    pub numAnalogOutChannels: c_int,
    pub numDigitalChannels: c_int,
    pub beginMuted: c_int,
    pub dacLevel: f32,
    pub adcLevel: f32,
    pub pgaGain: [f32; 2],
    pub headphoneLevel: f32,
    pub numMuxChannels: c_int,
    pub audioExpanderInputs: c_uint,
    pub audioExpanderOutputs: c_uint,
    pub pruNumber: c_int,
    pub pruFilename: [c_char; 256],
    pub detectUnderruns: c_int,
    pub verbose: c_int,
    pub enableLED: c_int,
    pub stopButtonPin: c_int,
    pub highPerformanceMode: c_int,
    pub interleave: c_int,
    pub analogOutputsPersist: c_int,
    pub uniformSampleRate: c_int,
    pub audioThreadStackSize: c_uint,
    pub auxiliaryTaskStackSize: c_uint,
    pub setup: Option<unsafe extern "C" fn(arg1: *mut BelaContext, arg2: *mut c_void) -> bool>,
    pub render: Option<unsafe extern "C" fn(arg1: *mut BelaContext, arg2: *mut c_void)>,
    pub cleanup: Option<unsafe extern "C" fn(arg1: *mut BelaContext, arg2: *mut c_void)>,
    pub ampMutePin: c_int,
    pub audioThreadDone: Option<unsafe extern "C" fn(arg1: *mut BelaContext, arg2: *mut c_void)>,
    pub codecMode: *mut c_char,
    pub audioInputGains: BelaChannelGainArray,
    pub headphoneGains: BelaChannelGainArray,
    pub adcGains: BelaChannelGainArray,
    pub lineOutGains: BelaChannelGainArray,
    pub disabledDigitalChannels: u32,
    pub unused: [c_char; 220],
    pub board: BelaHw,
    pub projectName: *mut c_char,
}

\ingroup control \brief Structure containing initialisation parameters for the real-time audio control system.

This structure is initialised using Bela_defaultSettings(). Its contents are used up through the point of calling Bela_initAudio() at which point it is no longer needed.

Fields

periodSize: c_int

\brief Number of audio frames per period (“blocksize”).

The number of analog frames depends on relative sample rates of the two. By default, audio is twice the sample rate, so has twice the period size.

useAnalog: c_int

Whether to use the analog input and output

useDigital: c_int

Whether to use the 16 programmable GPIOs

numAudioInChannels: c_int

How many audio input channels [ignored]

numAudioOutChannels: c_int

How many audio out channels [ignored]

numAnalogInChannels: c_int

How many analog input channels

numAnalogOutChannels: c_int

How many analog output channels

numDigitalChannels: c_int

How many channels for the GPIOs

beginMuted: c_int

Whether to begin with the speakers muted

dacLevel: f32

Level for the audio DAC output. DEPRECATED: ues lineOutGains

adcLevel: f32

Level for the audio ADC input. DEPRECATED: use audioInputGains

pgaGain: [f32; 2]

Gains for the PGA, left and right channels. DEPRECATED: use audioInputGains

headphoneLevel: f32

Level for the headphone output. DEPRECATED: use headphoneGains

numMuxChannels: c_int

How many channels to use on the multiplexer capelet, if enabled

audioExpanderInputs: c_uint

Which audio expander settings to use on the input

audioExpanderOutputs: c_uint

Which audio expander settings to use on the input

pruNumber: c_int

Which PRU (0 or 1) the code should run on

pruFilename: [c_char; 256]

The external .bin file to load. If empty will use PRU code from pru_rtaudio_bin.h

detectUnderruns: c_int

Whether to detect and log underruns

verbose: c_int

Whether to use verbose logging

enableLED: c_int

Whether to use the blinking LED to indicate Bela is running

stopButtonPin: c_int

What GPIO pin to monitor for stopping the program. Defaults to 115 (button on P9.27/P2.34/GPIO3[19]). Pass -1 to disable monitoring.

highPerformanceMode: c_int

Whether to use high-performance mode: gives more CPU to the Bela task. The Linux part of the board and the IDE may freeze while the program is running. Use the button on the Bela cape to forcefully stop the running program

interleave: c_int

Whether audio/analog data should be interleaved

analogOutputsPersist: c_int

\brief Whether analog outputs should persist to future frames.

n.b. digital pins always persist, audio never does

uniformSampleRate: c_int

\brief Whether the analog channels should be resampled to audio sampling rate.

audioThreadStackSize: c_uint

\brief The requested stack size for the audio thread. Defaults

auxiliaryTaskStackSize: c_uint

\brief The requested stack size for each AuxilaryTask. Defaults

setup: Option<unsafe extern "C" fn(arg1: *mut BelaContext, arg2: *mut c_void) -> bool>

render: Option<unsafe extern "C" fn(arg1: *mut BelaContext, arg2: *mut c_void)>

cleanup: Option<unsafe extern "C" fn(arg1: *mut BelaContext, arg2: *mut c_void)>

ampMutePin: c_int

Pin where amplifier mute can be found

audioThreadDone: Option<unsafe extern "C" fn(arg1: *mut BelaContext, arg2: *mut c_void)>

Pointer to an optional function to be called when the audio thread is done. This function is called from the audio thread itself just before it returns.

codecMode: *mut c_char

A codec-specific intialisation parameter

audioInputGains: BelaChannelGainArray

audio input gains

headphoneGains: BelaChannelGainArray

level for headphone outputs

adcGains: BelaChannelGainArray

Level for the audio ADC input DEPRECATED: use audioInputGains

lineOutGains: BelaChannelGainArray

Level for the audio line level output

disabledDigitalChannels: u32

A bitmask of disabled digital channels

unused: [c_char; 220]

board: BelaHw

User selected board to work with (as opposed to detected hardware).

projectName: *mut c_char

Name of running project.

Trait Implementations

impl Clone for BelaInitSettings

fn clone(&self) -> BelaInitSettings

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BelaInitSettings

impl Debug for BelaInitSettings

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

Formats the value using the given formatter.

impl Default for BelaInitSettings

fn default() -> Self

Returns the “default value” for a type.