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package aquestalk
import (
#cgo LDFLAGS: -ldl
#include <dlfcn.h>
unsigned char* callSynthe(void *p, const char *koe, int speed, int *size) {
unsigned char* (*synthe)(const char*, int, int*) = p;
return synthe(koe, speed, size);
void callFree(void *p, unsigned char *wav) {
void (*freewav)(unsigned char *) = p;
import "C"
// DLLName declares name of shared object. You can change this only before call Synthe().
var DLLName = "./"
// Synthe synthesizes voice with an engine a.k.a. "Yukkuri".
func Synthe(koe string, speed int32) ([]byte, error) {
h := C.dlopen(C.CString(DLLName), C.RTLD_LAZY)
if h == nil {
return nil, fmt.Errorf("failed to load %s", DLLName)
pSynthe := C.dlsym(h, C.CString("AquesTalk_Synthe_Utf8"))
if pSynthe == nil {
return nil, errors.New("not found symbol: AquesTalk_Synthe_Utf8")
pFree := C.dlsym(h, C.CString("AquesTalk_FreeWave"))
if pFree == nil {
return nil, errors.New("not found symbol: AquesTalk_FreeWave")
var size
r := C.callSynthe(pSynthe, C.CString(koe),, &size)
if r == nil {
return nil, errno(size)
pWav := C.GoBytes(unsafe.Pointer(r), size)
p := make([]byte, len(pWav))
copy(p, pWav)
C.callFree(pFree, r)
return p, nil