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FFI: Allow getting and setting volume, and getting min, normal and max volume.

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mcb2003 2020-12-12 20:31:30 +00:00
parent 73210d6572
commit a2c13dd21f
1 changed files with 61 additions and 0 deletions
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61
src/ffi.rs
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@ -261,3 +261,64 @@ pub unsafe extern "C" fn tts_set_pitch(tts: *mut TTS, pitch: c_float) -> bool {
}
}
}
/// Returns the minimum volume for this speech synthesizer.
/// `tts` must be a valid pointer to a TTS object.
#[no_mangle]
pub unsafe extern "C" fn tts_min_volume(tts: *mut TTS) -> c_float {
tts.as_ref().unwrap().min_volume()
}
/// Returns the maximum volume for this speech synthesizer.
/// `tts` must be a valid pointer to a TTS object.
#[no_mangle]
pub unsafe extern "C" fn tts_max_volume(tts: *mut TTS) -> c_float {
tts.as_ref().unwrap().max_volume()
}
/// Returns the normal volume for this speech synthesizer.
/// `tts` must be a valid pointer to a TTS object.
#[no_mangle]
pub unsafe extern "C" fn tts_normal_volume(tts: *mut TTS) -> c_float {
tts.as_ref().unwrap().normal_volume()
}
/// Gets the current speech volume.
/// Returns true on success, false on error (likely that the backend doesn't support volume changes)
/// or if `tts` is NULL.
/// Does nothing if `volume` is NULL.
#[no_mangle]
pub unsafe extern "C" fn tts_get_volume(tts: *mut TTS, volume: *mut c_float) -> bool {
if tts.is_null() {
return false;
}
match tts.as_ref().unwrap().get_volume() {
Ok(r) => {
if !volume.is_null() {
*volume = r;
}
true
}
Err(e) => {
set_last_error(e.to_string()).unwrap();
false
}
}
}
/// Sets the desired speech volume.
/// Returns true on success, false on error (likely that the backend doesn't support volume changes)
/// or if `tts` is NULL.
#[no_mangle]
pub unsafe extern "C" fn tts_set_volume(tts: *mut TTS, volume: c_float) -> bool {
if tts.is_null() {
return false;
}
match tts.as_mut().unwrap().set_volume(volume) {
Ok(_) => true,
Err(e) => {
set_last_error(e.to_string()).unwrap();
false
}
}
}