LocalAI/pkg/backend/tts/piper.go

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package tts
// This is a wrapper to statisfy the GRPC service interface
// It is meant to be used by the main executable that is the server for the specific backend type (falcon, gpt3, etc)
import (
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"fmt"
"os"
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"path/filepath"
"github.com/go-skynet/LocalAI/pkg/grpc/base"
pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
piper "github.com/mudler/go-piper"
)
type Piper struct {
base.SingleThread
piper *PiperB
}
func (sd *Piper) Load(opts *pb.ModelOptions) error {
if filepath.Ext(opts.ModelFile) != ".onnx" {
return fmt.Errorf("unsupported model type %s (should end with .onnx)", opts.ModelFile)
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}
var err error
// Note: the Model here is a path to a directory containing the model files
sd.piper, err = New(opts.LibrarySearchPath)
return err
}
func (sd *Piper) TTS(opts *pb.TTSRequest) error {
return sd.piper.TTS(opts.Text, opts.Model, opts.Dst)
}
type PiperB struct {
assetDir string
}
func New(assetDir string) (*PiperB, error) {
if _, err := os.Stat(assetDir); err != nil {
return nil, err
}
return &PiperB{
assetDir: assetDir,
}, nil
}
func (s *PiperB) TTS(text, model, dst string) error {
return piper.TextToWav(text, model, s.assetDir, "", dst)
}