func doGenerateSpeechFiles(sentences []string, option option) ([]string, error) {
sLen := len(sentences)
files := make([]string, 0)
filePrefix := utils.RandomString(16)
reply := make(chan int, sLen)
timeout := false
hasError := false
for i, sentence := range sentences {
option.LimitCh <- 1
fileName := fmt.Sprintf("%s%s-%d.mp3", option.SpeechFileDir, filePrefix, i)
go getSpeech(sentence, option.Speaker, fileName, reply, option.LimitCh)
files = append(files, fileName)
}
L:
for i := 0; i < sLen; i++ {
select {
case <-time.After(time.Duration(GenerateSpeechTimeout)):
timeout = true
break L
case r := <-reply:
if r == -1 {
hasError = true
break L
}
}
}
if timeout {
return []string{}, errors.New("Generate speech timeout!")
} else if hasError {
return []string{}, errors.New("Generate speech error!")
}
return files, nil
}
func mp3ToFlac(mp3File string) (string, error) {
flacPath, _ := filepath.Abs(utils.RandomString(7) + ".flac")
_, convertErr := exec.Command("ffmpeg", "-i", mp3File, flacPath).Output()
if convertErr != nil {
return "", convertErr
}
return flacPath, nil
}
func downloadFile(fileUrl string) (string, error) {
ext := filepath.Ext(fileUrl)
fileName := utils.RandomString(7) + ext
f, createFileErr := os.Create(fileName)
defer f.Close()
if createFileErr != nil {
return "", createFileErr
}
resp, downloadFileErr := http.Get(fileUrl)
defer resp.Body.Close()
if downloadFileErr != nil {
return "", downloadFileErr
}
_, writeFileErr := io.Copy(f, resp.Body)
if writeFileErr != nil {
return "", writeFileErr
}
p, _ := filepath.Abs(f.Name())
return p, nil
}
func (self *PiAssistant) getCommandFile(fileUrl string) (string, error) {
ext := filepath.Ext(fileUrl)
fileName := utils.RandomString(7) + ext
return utils.DownloadHttpFile(fileUrl, fileName)
}