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tts-rs
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Support dynamic feature selection/use in example.

This commit is contained in:
Nolan Darilek 2019-03-25 16:34:30 +00:00
parent ac4ebea05a
commit e388934e5e
2 changed files with 44 additions and 27 deletions
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49
examples/hello_world.rs
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@ -1,30 +1,39 @@
use std::u8; use std::u8;
use tts::TTS; use tts::*;
fn main() -> Result<(), std::io::Error> { fn main() -> Result<(), std::io::Error> {
env_logger::init(); env_logger::init();
let mut tts = TTS::default()?; let mut tts = TTS::default()?;
tts.speak("Hello, world.", false)?; tts.speak("Hello, world.", false)?;
let original_rate = tts.get_rate()?; let Features { rate, .. } = tts.supported_features();
tts.speak(format!("Current rate: {}", original_rate), false)?; if rate {
tts.set_rate(u8::MAX)?; let original_rate = tts.get_rate()?;
tts.speak("This is very fast.", false)?; tts.speak(format!("Current rate: {}", original_rate), false)?;
tts.set_rate(0)?; tts.set_rate(u8::MAX)?;
tts.speak("This is very slow.", false)?; tts.speak("This is very fast.", false)?;
tts.set_rate(original_rate)?; tts.set_rate(0)?;
let original_pitch = tts.get_pitch()?; tts.speak("This is very slow.", false)?;
tts.set_pitch(u8::MAX)?; tts.set_rate(original_rate)?;
tts.speak("This is high-pitch.", false)?; }
tts.set_pitch(0)?; let Features { pitch, .. } = tts.supported_features();
tts.speak("This is low pitch.", false)?; if pitch {
tts.set_pitch(original_pitch)?; let original_pitch = tts.get_pitch()?;
let original_volume = tts.get_volume()?; tts.set_pitch(u8::MAX)?;
tts.set_volume(u8::MAX)?; tts.speak("This is high-pitch.", false)?;
tts.speak("This is loud!", false)?; tts.set_pitch(0)?;
tts.set_volume(0)?; tts.speak("This is low pitch.", false)?;
tts.speak("This is quiet.", false)?; tts.set_pitch(original_pitch)?;
tts.set_volume(original_volume)?; }
let Features { volume, .. } = tts.supported_features();
if volume {
let original_volume = tts.get_volume()?;
tts.set_volume(u8::MAX)?;
tts.speak("This is loud!", false)?;
tts.set_volume(0)?;
tts.speak("This is quiet.", false)?;
tts.set_volume(original_volume)?;
}
tts.speak("Goodbye.", false)?; tts.speak("Goodbye.", false)?;
Ok(()) Ok(())
} }

22
src/lib.rs
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@ -38,10 +38,10 @@ impl convert::From<Error> for io::Error {
} }
pub struct Features { pub struct Features {
stop: bool, pub stop: bool,
rate: bool, pub rate: bool,
pitch: bool, pub pitch: bool,
volume: bool, pub volume: bool,
} }
pub trait Backend { pub trait Backend {
@ -130,7 +130,9 @@ impl TTS {
* Sets the desired speech rate. * Sets the desired speech rate.
*/ */
pub fn set_rate(&mut self, rate: u8) -> Result<&Self, Error> { pub fn set_rate(&mut self, rate: u8) -> Result<&Self, Error> {
let Features { rate: rate_feature, .. } = self.supported_features(); let Features {
rate: rate_feature, ..
} = self.supported_features();
if rate_feature { if rate_feature {
self.0.set_rate(rate)?; self.0.set_rate(rate)?;
Ok(self) Ok(self)
@ -155,7 +157,10 @@ impl TTS {
* Sets the desired speech pitch. * Sets the desired speech pitch.
*/ */
pub fn set_pitch(&mut self, pitch: u8) -> Result<&Self, Error> { pub fn set_pitch(&mut self, pitch: u8) -> Result<&Self, Error> {
let Features { pitch: pitch_feature, .. } = self.supported_features(); let Features {
pitch: pitch_feature,
..
} = self.supported_features();
if pitch_feature { if pitch_feature {
self.0.set_pitch(pitch)?; self.0.set_pitch(pitch)?;
Ok(self) Ok(self)
@ -180,7 +185,10 @@ impl TTS {
* Sets the desired speech volume. * Sets the desired speech volume.
*/ */
pub fn set_volume(&mut self, volume: u8) -> Result<&Self, Error> { pub fn set_volume(&mut self, volume: u8) -> Result<&Self, Error> {
let Features { volume: volume_feature, .. } = self.supported_features(); let Features {
volume: volume_feature,
..
} = self.supported_features();
if volume_feature { if volume_feature {
self.0.set_volume(volume)?; self.0.set_volume(volume)?;
Ok(self) Ok(self)