nolan/tts-rs
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FFI: Take only const pointers to TTS objects when we don't modify them.

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This commit is contained in:
mcb2003 2021-03-06 09:36:45 +00:00
parent 9ab38f550f
commit 060a057c0f
1 changed files with 16 additions and 15 deletions
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31
src/ffi.rs
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@ -81,7 +81,7 @@ pub unsafe extern "C" fn tts_free(tts: *mut TTS) {
/// Returns the features supported by this TTS engine.
/// `tts` must be a valid pointer to a TTS object.
#[no_mangle]
pub unsafe extern "C" fn tts_supported_features(tts: *mut TTS) -> Features {
pub unsafe extern "C" fn tts_supported_features(tts: *const TTS) -> Features {
tts.as_ref().unwrap().supported_features()
}
@ -97,7 +97,7 @@ pub unsafe extern "C" fn tts_speak(
utterance: *mut *mut UtteranceId,
) -> bool {
if tts.is_null() {
return true;
return false;
}
let text = CStr::from_ptr(text).to_string_lossy().into_owned();
match tts.as_mut().unwrap().speak(text, interrupt) {
@ -126,6 +126,7 @@ pub unsafe extern "C" fn tts_free_utterance(utterance: *mut UtteranceId) {
}
Box::from_raw(utterance);
}
/// Stops current speech.
/// Returns true on success, false on error or if `tts` is NULL.
#[no_mangle]
@ -145,21 +146,21 @@ pub unsafe extern "C" fn tts_stop(tts: *mut TTS) -> bool {
/// Returns the minimum rate for this speech synthesizer.
/// `tts` must be a valid pointer to a TTS object.
#[no_mangle]
pub unsafe extern "C" fn tts_min_rate(tts: *mut TTS) -> c_float {
pub unsafe extern "C" fn tts_min_rate(tts: *const TTS) -> c_float {
tts.as_ref().unwrap().min_rate()
}
/// Returns the maximum rate for this speech synthesizer.
/// `tts` must be a valid pointer to a TTS object.
#[no_mangle]
pub unsafe extern "C" fn tts_max_rate(tts: *mut TTS) -> c_float {
pub unsafe extern "C" fn tts_max_rate(tts: *const TTS) -> c_float {
tts.as_ref().unwrap().max_rate()
}
/// Returns the normal rate for this speech synthesizer.
/// `tts` must be a valid pointer to a TTS object.
#[no_mangle]
pub unsafe extern "C" fn tts_normal_rate(tts: *mut TTS) -> c_float {
pub unsafe extern "C" fn tts_normal_rate(tts: *const TTS) -> c_float {
tts.as_ref().unwrap().normal_rate()
}
@ -168,7 +169,7 @@ pub unsafe extern "C" fn tts_normal_rate(tts: *mut TTS) -> c_float {
/// or if `tts` is NULL.
/// Does nothing if `rate` is NULL.
#[no_mangle]
pub unsafe extern "C" fn tts_get_rate(tts: *mut TTS, rate: *mut c_float) -> bool {
pub unsafe extern "C" fn tts_get_rate(tts: *const TTS, rate: *mut c_float) -> bool {
if tts.is_null() {
return false;
}
@ -206,21 +207,21 @@ pub unsafe extern "C" fn tts_set_rate(tts: *mut TTS, rate: c_float) -> bool {
/// Returns the minimum pitch for this speech synthesizer.
/// `tts` must be a valid pointer to a TTS object.
#[no_mangle]
pub unsafe extern "C" fn tts_min_pitch(tts: *mut TTS) -> c_float {
pub unsafe extern "C" fn tts_min_pitch(tts: *const TTS) -> c_float {
tts.as_ref().unwrap().min_pitch()
}
/// Returns the maximum pitch for this speech synthesizer.
/// `tts` must be a valid pointer to a TTS object.
#[no_mangle]
pub unsafe extern "C" fn tts_max_pitch(tts: *mut TTS) -> c_float {
pub unsafe extern "C" fn tts_max_pitch(tts: *const TTS) -> c_float {
tts.as_ref().unwrap().max_pitch()
}
/// Returns the normal pitch for this speech synthesizer.
/// `tts` must be a valid pointer to a TTS object.
#[no_mangle]
pub unsafe extern "C" fn tts_normal_pitch(tts: *mut TTS) -> c_float {
pub unsafe extern "C" fn tts_normal_pitch(tts: *const TTS) -> c_float {
tts.as_ref().unwrap().normal_pitch()
}
@ -229,7 +230,7 @@ pub unsafe extern "C" fn tts_normal_pitch(tts: *mut TTS) -> c_float {
/// or if `tts` is NULL.
/// Does nothing if `pitch` is NULL.
#[no_mangle]
pub unsafe extern "C" fn tts_get_pitch(tts: *mut TTS, pitch: *mut c_float) -> bool {
pub unsafe extern "C" fn tts_get_pitch(tts: *const TTS, pitch: *mut c_float) -> bool {
if tts.is_null() {
return false;
}
@ -267,21 +268,21 @@ 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 {
pub unsafe extern "C" fn tts_min_volume(tts: *const 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 {
pub unsafe extern "C" fn tts_max_volume(tts: *const 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 {
pub unsafe extern "C" fn tts_normal_volume(tts: *const TTS) -> c_float {
tts.as_ref().unwrap().normal_volume()
}
@ -290,7 +291,7 @@ pub unsafe extern "C" fn tts_normal_volume(tts: *mut TTS) -> c_float {
/// 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 {
pub unsafe extern "C" fn tts_get_volume(tts: *const TTS, volume: *mut c_float) -> bool {
if tts.is_null() {
return false;
}
@ -331,7 +332,7 @@ pub unsafe extern "C" fn tts_set_volume(tts: *mut TTS, volume: c_float) -> bool
/// If `speaking` is NULL, returns this value instead, meaning you can't tell the difference
/// between an error occuring and the synth not speaking.
#[no_mangle]
pub unsafe extern "C" fn tts_is_speaking(tts: *mut TTS, speaking: *mut bool) -> bool {
pub unsafe extern "C" fn tts_is_speaking(tts: *const TTS, speaking: *mut bool) -> bool {
if tts.is_null() {
return false;
}