AIFF audio.

ArcFormats/AudioAIFF.cs

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+//! \file       AudioAIFF.cs
+//! \date       2018 Jul 04
+//! \brief      Audio Interchange File Format.
+//
+// Copyright (C) 2018 by morkt
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+using System.ComponentModel.Composition;
+using System.IO;
+using NAudio.Wave;
+
+namespace GameRes.Formats
+{
+    [Export(typeof(AudioFormat))]
+    public class AiffAudio : AudioFormat
+    {
+        public override string         Tag { get { return "AIFF"; } }
+        public override string Description { get { return "Audio Interchange File Format"; } }
+        public override uint     Signature { get { return 0x4D524F46; } } // 'FORM'
+        public override bool      CanWrite { get { return false; } }
+
+        public AiffAudio ()
+        {
+            Extensions = new string[] { "aif", "aiff" };
+        }
+
+        public override SoundInput TryOpen (IBinaryStream file)
+        {
+            return new AiffInput (file.AsStream);
+        }
+    }
+
+    public class AiffInput : SoundInput
+    {
+        int                     m_bitrate = 0;
+        AiffFileReader          m_reader;
+
+        public override long Position
+        {
+            get { return m_reader.Position; }
+            set { m_reader.Position = value; }
+        }
+
+        public override bool CanSeek { get { return true; } }
+
+        public override int SourceBitrate
+        {
+            get { return m_bitrate; }
+        }
+
+        public override string SourceFormat { get { return "aiff"; } }
+
+        public AiffInput (Stream file) : base (file)
+        {
+            m_reader = new AiffFileReader (file);
+            var format = new GameRes.WaveFormat {
+                FormatTag                = (ushort)m_reader.WaveFormat.Encoding,
+                Channels                 = (ushort)m_reader.WaveFormat.Channels,
+                SamplesPerSecond         = (uint)m_reader.WaveFormat.SampleRate,
+                BitsPerSample            = (ushort)m_reader.WaveFormat.BitsPerSample,
+                BlockAlign               = (ushort)m_reader.BlockAlign,
+                AverageBytesPerSecond    = (uint)m_reader.WaveFormat.AverageBytesPerSecond,
+            };
+            this.Format = format;
+            this.PcmSize = m_reader.Length;
+        }
+
+        public override int Read (byte[] buffer, int offset, int count)
+        {
+            return m_reader.Read (buffer, offset, count);
+        }
+
+        #region IDisposable Members
+        bool m_disposed;
+        protected override void Dispose (bool disposing)
+        {
+            if (!m_disposed)
+            {
+                if (disposing)
+                {
+                    m_reader.Dispose();
+                }
+                m_disposed = true;
+                base.Dispose (disposing);
+            }
+        }
+        #endregion
+    }
+}