Refactoring of CUETools.Codecs.

2025-12-16 18:14:25 +00:00 · 2011-10-24 00:13:35 +00:00
parent 74c22995b8
commit 6f84aadc2e
34 changed files with 3117 additions and 3094 deletions
--- a/CUETools.Codecs/UserDefinedReader.cs
+++ b/CUETools.Codecs/UserDefinedReader.cs
@@ -0,0 +1,107 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+
+namespace CUETools.Codecs
+{
+    public class UserDefinedReader : IAudioSource
+    {
+        string _path, _decoder, _decoderParams;
+        Process _decoderProcess;
+        WAVReader rdr;
+
+        public long Position
+        {
+            get
+            {
+                Initialize();
+                return rdr.Position;
+            }
+            set
+            {
+                Initialize();
+                rdr.Position = value;
+            }
+        }
+
+        public long Length
+        {
+            get
+            {
+                Initialize();
+                return rdr.Length;
+            }
+        }
+
+        public long Remaining
+        {
+            get
+            {
+                Initialize();
+                return rdr.Remaining;
+            }
+        }
+
+        public AudioPCMConfig PCM
+        {
+            get
+            {
+                Initialize();
+                return rdr.PCM;
+            }
+        }
+
+        public string Path { get { return _path; } }
+
+        public UserDefinedReader(string path, Stream IO, string decoder, string decoderParams)
+        {
+            _path = path;
+            _decoder = decoder;
+            _decoderParams = decoderParams;
+            _decoderProcess = null;
+            rdr = null;
+        }
+
+        void Initialize()
+        {
+            if (_decoderProcess != null)
+                return;
+            _decoderProcess = new Process();
+            _decoderProcess.StartInfo.FileName = _decoder;
+            _decoderProcess.StartInfo.Arguments = _decoderParams.Replace("%I", "\"" + _path + "\"");
+            _decoderProcess.StartInfo.CreateNoWindow = true;
+            _decoderProcess.StartInfo.RedirectStandardOutput = true;
+            _decoderProcess.StartInfo.UseShellExecute = false;
+            bool started = false;
+            Exception ex = null;
+            try
+            {
+                started = _decoderProcess.Start();
+                if (started)
+                    _decoderProcess.PriorityClass = Process.GetCurrentProcess().PriorityClass;
+            }
+            catch (Exception _ex)
+            {
+                ex = _ex;
+            }
+            if (!started)
+                throw new Exception(_decoder + ": " + (ex == null ? "please check the path" : ex.Message));
+            rdr = new WAVReader(_path, _decoderProcess.StandardOutput.BaseStream);
+        }
+
+        public void Close()
+        {
+            if (rdr != null)
+                rdr.Close();
+            if (_decoderProcess != null && !_decoderProcess.HasExited)
+                try { _decoderProcess.Kill(); _decoderProcess.WaitForExit(); }
+                catch { }
+        }
+
+        public int Read(AudioBuffer buff, int maxLength)
+        {
+            Initialize();
+            return rdr.Read(buff, maxLength);
+        }
+    }
+}