KeypadGuard

gemini_adk_fluent_rs::telephony::bridge

Struct KeypadGuard 

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pub struct KeypadGuard { /* private fields */ }
Expand description

Keeps keypad tones and masked keypad entry away from the model.

An InputAudioProcessor for the caller’s audio at the connector’s rate:

  • Frames carrying DTMF tones are silenced (from the first detection, for 60 ms after), so the model neither hears nor transcribes keypresses. Up to one detection block (26 ms) of a tone’s onset can pass before it is recognized; that is too short to be decoded.
  • While KEY_KEYPAD_MASK is set, every frame is silenced.
  • With record_in_band, digits found in the audio are recorded with record_dtmf. Use it for transports without out-of-band DTMF; where the platform reports keypresses itself (Twilio dtmf events, RFC 4733), leave it off so digits aren’t counted twice.

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impl KeypadGuard

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pub fn new(state: State, sample_rate: u32) -> Self

A guard for caller audio at sample_rate, writing to state.

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pub fn record_in_band(self, enabled: bool) -> Self

Also record digits detected in the audio (see the type docs).

Trait Implementations§

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impl InputAudioProcessor for KeypadGuard

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fn process_frame(&mut self, frame: &mut Vec<i16>)

Process one PCM16 frame in place (the frame may change length).

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