Forward TTS speed for VoxCPM clone

Author: skyguan92

internal/inferencehttp/routes.go

@@ -636,7 +636,7 @@ func buildVoxCPMCloneRequest(raw map[string]any) ([]byte, string, error) {
 			return nil, "", err
 		}
 	}
-	for _, key := range []string{"response_format", "temperature", "cfg", "max_length"} {
+	for _, key := range []string{"response_format", "temperature", "cfg", "max_length", "speed"} {
 		if value, ok := raw[key]; ok {
 			if err := writer.WriteField(key, fmt.Sprint(value)); err != nil {
 				return nil, "", err

internal/inferencehttp/routes_test.go

@@ -433,7 +433,7 @@ func TestHandleTTSVoxCPMCloneJSONRoutesToCloneAndWrapsAudio(t *testing.T) {
 	mux := http.NewServeMux()
 	RegisterRoutes(deps)(mux)
 
-	reqBody := `{"model":"voxcpm2","text":"hello","response_format":"wav","reference_audio":"data:audio/wav;base64,UklGRg==","reference_text":"sample voice"}`
+	reqBody := `{"model":"voxcpm2","text":"hello","response_format":"wav","speed":1.1,"reference_audio":"data:audio/wav;base64,UklGRg==","reference_text":"sample voice"}`
 	req := httptest.NewRequest(http.MethodPost, "/v1/tts", strings.NewReader(reqBody))
 	req.Header.Set("Content-Type", "application/json")
 	w := httptest.NewRecorder()
@@ -463,6 +463,9 @@ func TestHandleTTSVoxCPMCloneJSONRoutesToCloneAndWrapsAudio(t *testing.T) {
 	if field("response_format") != "wav" {
 		t.Fatalf("response_format field = %q, want wav", field("response_format"))
 	}
+	if field("speed") != "1.1" {
+		t.Fatalf("speed field = %q, want 1.1", field("speed"))
+	}
 	if gotRefName != "reference.wav" {
 		t.Fatalf("ref_audio filename = %q, want reference.wav", gotRefName)
 	}