Merge pull request stakira#1087 from rokujyushi/FixAddVoicevox

Small Fix Voicevox

Author: stakira

OpenUtau.Core/Util/Base64.cs

@@ -70,7 +70,7 @@ public static void Base64ToFile(string base64str,string filePath) {
                 File.WriteAllBytes(filePath, bytes);
 
             } catch (Exception ex) {
-                Log.Error(@"{ex}");
+                Log.Error($"{ex}");
             }
         }
     }

OpenUtau.Core/Voicevox/VoicevoxClient.cs

@@ -24,11 +24,12 @@ internal Tuple<string, byte[]> SendRequest(VoicevoxURL voicevoxURL) {
                         if (!str.StartsWith("{") || !str.EndsWith("}")) {
                             str = "{ \"json\":" + str + "}";
                         }
+                        Log.Information($"VoicevoxResponse StatusCode :{response.Result.StatusCode}");
                         return new Tuple<string, byte[]>(str, response.Result.Content.ReadAsByteArrayAsync().Result);
                     }
                 }
             } catch (Exception ex) {
-                Log.Error(@"{ex}");
+                Log.Error($"{ex}");
             }
             return new Tuple<string, byte[]>("", new byte[0]);
         }

OpenUtau.Core/Voicevox/VoicevoxSinger.cs

@@ -156,10 +156,12 @@ void Load() {
         }
 
         public override bool TryGetOto(string phoneme, out UOto oto) {
-            var parts = phoneme.Split();
-            if (parts.All(p => phonemes.Contains(p))) {
-                oto = UOto.OfDummy(phoneme);
-                return true;
+            if(phoneme != null) {
+                var parts = phoneme.Split();
+                if (parts.All(p => phonemes.Contains(p))) {
+                    oto = UOto.OfDummy(phoneme);
+                    return true;
+                }
             }
             oto = null;
             return false;

OpenUtau.Core/Voicevox/VoicevoxUtils.cs

@@ -77,6 +77,10 @@ public static VoicevoxQueryMain NoteGroupsToVoicevox(Note[][] notes, TimeAxis ti
                 while (index < notes.Length) {
                     string lyric = dic.Lyrictodic(notes, index);
                     int length = (int)Math.Round(((timeAxis.TickPosToMsPos(notes[index].Sum(n => n.duration)) / 1000f) * VoicevoxUtils.fps), MidpointRounding.AwayFromZero);
+                    //Avoid synthesis without at least two frames.
+                    if (length < 2 ) {
+                        length = 2;
+                    }
                     int? tone = null;
                     if (!string.IsNullOrEmpty(lyric) || VoicevoxUtils.IsPau(lyric)) {
                         if (notes[index][0].phonemeAttributes != null) {