support qaac tvbr

OKEGui/OKEGui/JobProcessor/Audio/QAACEncoder.cs

@@ -4,6 +4,7 @@
 using System.Text.RegularExpressions;
 using System.Threading;
 using OKEGui.Utils;
+using System.Text;
 
 namespace OKEGui.JobProcessor
 {
@@ -19,7 +20,19 @@ protected AudioJob AJob
         public QAACEncoder(AudioJob ajob) : base(ajob)
         {
             executable = Constants.QAACPath;
-            commandLine = $"-i -v {AJob.Info.Bitrate} -q 2 --no-delay -o \"{AJob.Output}\" \"{AJob.Input}\"";
+
+            var sb = new StringBuilder("-i ");
+            if (AJob.Info.Quality != null)
+            {
+                sb.Append($"-V {AJob.Info.Quality} ");
+            }
+            else
+            {
+                sb.Append($"-v {AJob.Info.Bitrate} ");
+            }
+            sb.Append($"-q 2 --no-delay -o \"{AJob.Output}\" \"{AJob.Input}\"");
+
+            commandLine = sb.ToString();
         }
 
         public QAACEncoder(string commandLine) : base(null)

OKEGui/OKEGui/Model/Info/AudioInfo.cs

@@ -6,6 +6,7 @@ public class AudioInfo : Info
     {
         public string OutputCodec;
         public int Bitrate = Constants.QAACBitrate;
+        public int? Quality;
         public bool Lossy = false;
         public int Length;
 

OKEGui/OKEGui/Task/AddTaskService.cs

@@ -186,6 +186,21 @@ public static TaskProfile ProcessJsonProfile(TaskProfile json, DirectoryInfo pro
                         MessageBox.Show("音轨未设置 OutputCodec，请检查大小写", "音轨编码错误", MessageBoxButton.OK, MessageBoxImage.Error);
                         return null;
                     }
+
+                    if (ai.Quality != null)
+                    {
+                        if (ai.Bitrate != Constants.QAACBitrate)
+                        {
+                            MessageBox.Show("音轨不能同时指定 Bitrate 和 Quality，请只保留其中一个", "音轨编码错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                            return null;
+                        }
+
+                        if (ai.Quality < Constants.QAACQualityMin || ai.Quality > Constants.QAACQualityMax)
+                        {
+                            MessageBox.Show($"音轨 Quality 的值必须介于 {Constants.QAACQualityMin}-${Constants.QAACQualityMax} 之间（闭区间），请检查", "音轨编码错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                            return null;
+                        }
+                    }
                 }
                 // 主音轨
                 json.AudioFormat = json.AudioTracks[0].OutputCodec;

OKEGui/OKEGui/Utils/Constants.cs

@@ -8,6 +8,8 @@ public static class Constants
         //QAAC encoder.
         public const string QAACPath = ".\\tools\\qaac\\qaac64.exe";
         public const int QAACBitrate = 192;
+        public const int QAACQualityMin = 0;
+        public const int QAACQualityMax = 127;
 
         //ffmpeg
         public const string ffmpegPath = ".\\tools\\ffmpeg\\ffmpeg.exe";