381 lines
13 KiB
C#
381 lines
13 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Runtime.InteropServices;
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using System.IO;
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using System.Diagnostics;
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using System.Threading;
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namespace FDK
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{
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public unsafe class Cxa : SoundDecoder //, IDisposable
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{
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static byte[] FOURCC = Encoding.ASCII.GetBytes( "1DWK" ); // KWD1 の little endian
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#region [ XA用構造体の宣言 ]
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[StructLayout(LayoutKind.Sequential)]
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public struct XASTREAMHEADER {
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public byte* pSrc;
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public uint nSrcLen;
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public uint nSrcUsed;
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public byte* pDst;
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public uint nDstLen;
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public uint nDstUsed;
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}
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[StructLayout( LayoutKind.Sequential )]
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public struct XAHEADER
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{
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public uint id;
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public uint nDataLen;
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public uint nSamples;
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public ushort nSamplesPerSec;
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public byte nBits;
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public byte nChannels;
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public uint nLoopPtr;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
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public short[] befL;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
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public short[] befR;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
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public byte[] pad;
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}
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#endregion
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#region [ xadec.dllとのリンク ]
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[DllImport( "xadec.dll", EntryPoint = "xaDecodeOpen", CallingConvention = CallingConvention.Cdecl )]
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public extern static IntPtr xaDecodeOpen( ref XAHEADER pxah, out FDK.CWin32.WAVEFORMATEX pwfx );
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[DllImport( "xadec.dll", EntryPoint = "xaDecodeClose", CallingConvention = CallingConvention.Cdecl )]
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public extern static bool xaDecodeClose( IntPtr hxas );
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[DllImport( "xadec.dll", EntryPoint = "xaDecodeSize", CallingConvention = CallingConvention.Cdecl )]
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public extern static bool xaDecodeSize( IntPtr hxas, uint slen, out uint pdlen );
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[DllImport( "xadec.dll", EntryPoint = "xaDecodeConvert", CallingConvention = CallingConvention.Cdecl )]
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public extern static bool xaDecodeConvert( IntPtr hxas, ref XASTREAMHEADER psh );
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#endregion
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public XAHEADER xaheader;
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public XASTREAMHEADER xastreamheader;
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public CWin32.WAVEFORMATEX waveformatex;
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private string filename;
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private byte[] srcBuf = null;
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private int nHandle = -1;
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public override int Open( string filename )
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{
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this.filename = filename;
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#region [ XAヘッダと、XAデータの読み出し ]
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xaheader = new XAHEADER();
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using ( FileStream fs = new FileStream( filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite ) ) // FileShare を付けとかないと、Close() 後もロックがかかる??
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{
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using ( BinaryReader br = new BinaryReader( fs ) )
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{
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xaheader.id = br.ReadUInt32();
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xaheader.nDataLen = br.ReadUInt32();
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xaheader.nSamples = br.ReadUInt32();
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xaheader.nSamplesPerSec = br.ReadUInt16();
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xaheader.nBits = br.ReadByte();
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xaheader.nChannels = br.ReadByte();
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xaheader.nLoopPtr = br.ReadUInt32();
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xaheader.befL = new short[ 2 ];
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xaheader.befR = new short[ 2 ];
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xaheader.pad = new byte[ 4 ];
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xaheader.befL[ 0 ] = br.ReadInt16();
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xaheader.befL[ 1 ] = br.ReadInt16();
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xaheader.befR[ 0 ] = br.ReadInt16();
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xaheader.befR[ 1 ] = br.ReadInt16();
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xaheader.pad = br.ReadBytes( 4 );
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srcBuf = new byte[ xaheader.nDataLen ];
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srcBuf = br.ReadBytes( (int) xaheader.nDataLen );
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}
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}
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//string xaid = Encoding.ASCII.GetString( xah.id );
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#region [ デバッグ表示 ]
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//Debug.WriteLine( "**XAHEADER**" );
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//Debug.WriteLine( "id= " + xaheader.id.ToString( "X8" ) );
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//Debug.WriteLine( "nDataLen= " + xaheader.nDataLen.ToString( "X8" ) );
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//Debug.WriteLine( "nSamples= " + xaheader.nSamples.ToString( "X8" ) );
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//Debug.WriteLine( "nSamplesPerSec= " + xaheader.nSamplesPerSec.ToString( "X4" ) );
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//Debug.WriteLine( "nBits= " + xaheader.nBits.ToString( "X2" ) );
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//Debug.WriteLine( "nChannels= " + xaheader.nChannels.ToString( "X2" ) );
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//Debug.WriteLine( "nLoopPtr= " + xaheader.nLoopPtr.ToString( "X8" ) );
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//Debug.WriteLine( "befL[0]= " + xaheader.befL[ 0 ].ToString( "X4" ) );
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//Debug.WriteLine( "befL[1]= " + xaheader.befL[ 1 ].ToString( "X4" ) );
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//Debug.WriteLine( "befR[0]= " + xaheader.befR[ 0 ].ToString( "X4" ) );
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//Debug.WriteLine( "befR[1]= " + xaheader.befR[ 1 ].ToString( "X4" ) );
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#endregion
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#endregion
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IntPtr hxas;
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#region [ WAVEFORMEX情報の取得 ]
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waveformatex = new CWin32.WAVEFORMATEX();
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hxas = xaDecodeOpen( ref xaheader, out waveformatex );
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if ( hxas == null )
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{
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Trace.TraceError( "Error: xa: Open(): xaDecodeOpen(): " + Path.GetFileName( filename ) );
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return -1;
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}
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#region [ デバッグ表示 ]
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//Debug.WriteLine( "**WAVEFORMATEX**" );
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//Debug.WriteLine( "wFormatTag= " + waveformatex.wFormatTag.ToString( "X4" ) );
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//Debug.WriteLine( "nChannels = " + waveformatex.nChannels.ToString( "X4" ) );
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//Debug.WriteLine( "nSamplesPerSec= " + waveformatex.nSamplesPerSec.ToString( "X8" ) );
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//Debug.WriteLine( "nAvgBytesPerSec= " + waveformatex.nAvgBytesPerSec.ToString( "X8" ) );
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//Debug.WriteLine( "nBlockAlign= " + waveformatex.nBlockAlign.ToString( "X4" ) );
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//Debug.WriteLine( "wBitsPerSample= " + waveformatex.wBitsPerSample.ToString( "X4" ) );
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//Debug.WriteLine( "cbSize= " + waveformatex.cbSize.ToString( "X4" ) );
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#endregion
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#endregion
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this.nHandle = (int) hxas;
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return (int) hxas;
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}
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public override int GetFormat( int nHandle, ref CWin32.WAVEFORMATEX wfx )
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{
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#region [ WAVEFORMATEX構造体の手動コピー ]
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wfx.nAvgBytesPerSec = waveformatex.nAvgBytesPerSec;
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wfx.wBitsPerSample = waveformatex.wBitsPerSample;
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wfx.nBlockAlign = waveformatex.nBlockAlign;
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wfx.nChannels = waveformatex.nChannels;
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wfx.wFormatTag = waveformatex.wFormatTag;
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wfx.nSamplesPerSec = waveformatex.nSamplesPerSec;
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return 0;
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#endregion
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}
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public override uint GetTotalPCMSize( int nHandle )
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{
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#region [ データ長の取得 ]
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uint dlen;
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xaDecodeSize( (IntPtr) nHandle, xaheader.nDataLen, out dlen );
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#region [ デバッグ表示 ]
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//Debug.WriteLine( "**INTERNAL VALUE**" );
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//Debug.WriteLine( "dlen= " + dlen );
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#endregion
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#endregion
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return dlen;
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}
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public override int Seek( int nHandle, uint dwPosition )
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{
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return 0;
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}
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public override int Decode( int nHandle, IntPtr pDest, uint szDestSize, int bLoop )
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{
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#region [ xaデータのデコード ]
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xastreamheader = new XASTREAMHEADER();
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unsafe
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{
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fixed ( byte* pXaBuf = srcBuf )
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{
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byte* pWavBuf = (byte*) pDest;
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xastreamheader.pSrc = pXaBuf;
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xastreamheader.nSrcLen = xaheader.nDataLen;
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xastreamheader.nSrcUsed = 0;
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xastreamheader.pDst = pWavBuf;
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xastreamheader.nDstLen = szDestSize;
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xastreamheader.nDstUsed = 0;
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if ( !xaDecodeConvert( (IntPtr) nHandle, ref xastreamheader ) )
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{
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Trace.TraceError( "Error: xaDecodeConvert(): " + Path.GetFileName( filename ) );
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return -1;
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}
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}
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}
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#region [ デバッグ表示 ]
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//Debug.WriteLine( "**XASTREAMHEADER**" );
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//Debug.WriteLine( "nSrcLen= " + xastreamheader.nSrcLen );
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//Debug.WriteLine( "nSrcUsed= " + xastreamheader.nSrcUsed );
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//Debug.WriteLine( "nDstLen= " + xastreamheader.nDstLen );
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//Debug.WriteLine( "nDstUsed= " + xastreamheader.nDstUsed );
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#endregion
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#endregion
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return 0;
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}
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public override void Close( int nHandle )
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{
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#region [ xaファイルのクローズ ]
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if ( !xaDecodeClose( (IntPtr) nHandle ) )
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{
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Trace.TraceError( "Error: xaDecodeClose(): " + Path.GetFileName( filename ) );
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}
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srcBuf = null;
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#endregion
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}
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//#region [ IDisposable 実装 ]
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////-----------------
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//private bool bDispose完了済み = false;
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//public void Dispose()
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//{
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// if ( !this.bDispose完了済み )
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// {
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// if ( srcBuf != null )
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// {
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// srcBuf = null;
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// }
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// if ( dstBuf != null )
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// {
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// dstBuf = null;
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// }
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// if ( this.nHandle >= 0 )
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// {
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// this.Close( this.nHandle );
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// this.nHandle = -1;
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// }
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// this.bDispose完了済み = true;
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// }
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//}
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////-----------------
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//#endregion
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#if false
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/// <summary>
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/// xaファイルを読み込んで、wavにdecodeする
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/// </summary>
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/// <param name="filename">xaファイル名</param>
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/// <param name="wavBuf">wavファイルが格納されるバッファ</param>
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/// <returns></returns>
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public bool Decode( string filename, out byte[] wavBuf )
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{
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// Debug.WriteLine( "xa: Decode: " + Path.GetFileName( filename ) );
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#region [ XAヘッダと、XAデータの読み出し ]
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xaheader = new XAHEADER();
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byte[] xaBuf;
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using ( FileStream fs = new FileStream( filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite ) ) // FileShare を付けとかないと、Close() 後もロックがかかる??
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{
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using ( BinaryReader br = new BinaryReader( fs ) )
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{
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xaheader.id = br.ReadUInt32();
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xaheader.nDataLen = br.ReadUInt32();
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xaheader.nSamples = br.ReadUInt32();
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xaheader.nSamplesPerSec = br.ReadUInt16();
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xaheader.nBits = br.ReadByte();
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xaheader.nChannels = br.ReadByte();
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xaheader.nLoopPtr = br.ReadUInt32();
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xaheader.befL = new short[ 2 ];
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xaheader.befR = new short[ 2 ];
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xaheader.pad = new byte[ 4 ];
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xaheader.befL[ 0 ] = br.ReadInt16();
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xaheader.befL[ 1 ] = br.ReadInt16();
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xaheader.befR[ 0 ] = br.ReadInt16();
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xaheader.befR[ 1 ] = br.ReadInt16();
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xaheader.pad = br.ReadBytes( 4 );
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xaBuf = new byte[ xaheader.nDataLen ];
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xaBuf = br.ReadBytes( (int) xaheader.nDataLen );
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}
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}
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//string xaid = Encoding.ASCII.GetString( xah.id );
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#region [ デバッグ表示 ]
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//Debug.WriteLine( "**XAHEADER**" );
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//Debug.WriteLine( "id= " + xaheader.id.ToString( "X8" ) );
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//Debug.WriteLine( "nDataLen= " + xaheader.nDataLen.ToString( "X8" ) );
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//Debug.WriteLine( "nSamples= " + xaheader.nSamples.ToString( "X8" ) );
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//Debug.WriteLine( "nSamplesPerSec= " + xaheader.nSamplesPerSec.ToString( "X4" ) );
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//Debug.WriteLine( "nBits= " + xaheader.nBits.ToString( "X2" ) );
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//Debug.WriteLine( "nChannels= " + xaheader.nChannels.ToString( "X2" ) );
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//Debug.WriteLine( "nLoopPtr= " + xaheader.nLoopPtr.ToString( "X8" ) );
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//Debug.WriteLine( "befL[0]= " + xaheader.befL[ 0 ].ToString( "X4" ) );
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//Debug.WriteLine( "befL[1]= " + xaheader.befL[ 1 ].ToString( "X4" ) );
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//Debug.WriteLine( "befR[0]= " + xaheader.befR[ 0 ].ToString( "X4" ) );
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//Debug.WriteLine( "befR[1]= " + xaheader.befR[ 1 ].ToString( "X4" ) );
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#endregion
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#endregion
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object lockobj = new object();
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lock ( lockobj ) // スレッドセーフじゃないかも知れないので、念のため
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{
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#region [ WAVEFORMEX情報の取得 ]
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waveformatex = new CWin32.WAVEFORMATEX();
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IntPtr hxas = xaDecodeOpen( ref xaheader, out waveformatex );
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if ( hxas == null )
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{
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Trace.TraceError( "Error: xaDecodeOpen(): " + Path.GetFileName( filename ) );
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wavBuf = null;
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return false;
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}
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#region [ デバッグ表示 ]
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//Debug.WriteLine( "**WAVEFORMATEX**" );
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//Debug.WriteLine( "wFormatTag= " + waveformatex.wFormatTag.ToString( "X4" ) );
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|||
|
|
//Debug.WriteLine( "nChannels = " + waveformatex.nChannels.ToString( "X4" ) );
|
|||
|
|
//Debug.WriteLine( "nSamplesPerSec= " + waveformatex.nSamplesPerSec.ToString( "X8" ) );
|
|||
|
|
//Debug.WriteLine( "nAvgBytesPerSec= " + waveformatex.nAvgBytesPerSec.ToString( "X8" ) );
|
|||
|
|
//Debug.WriteLine( "nBlockAlign= " + waveformatex.nBlockAlign.ToString( "X4" ) );
|
|||
|
|
//Debug.WriteLine( "wBitsPerSample= " + waveformatex.wBitsPerSample.ToString( "X4" ) );
|
|||
|
|
//Debug.WriteLine( "cbSize= " + waveformatex.cbSize.ToString( "X4" ) );
|
|||
|
|
#endregion
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
#region [ データ長の取得 ]
|
|||
|
|
uint dlen;
|
|||
|
|
xaDecodeSize( hxas, xaheader.nDataLen, out dlen );
|
|||
|
|
#region [ デバッグ表示 ]
|
|||
|
|
//Debug.WriteLine( "**INTERNAL VALUE**" );
|
|||
|
|
//Debug.WriteLine( "dlen= " + dlen );
|
|||
|
|
#endregion
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
#region [ xaデータのデコード ]
|
|||
|
|
wavBuf = new byte[ dlen ];
|
|||
|
|
xastreamheader = new XASTREAMHEADER();
|
|||
|
|
|
|||
|
|
unsafe
|
|||
|
|
{
|
|||
|
|
fixed ( byte* pXaBuf = xaBuf, pWavBuf = wavBuf )
|
|||
|
|
{
|
|||
|
|
xastreamheader.pSrc = pXaBuf;
|
|||
|
|
xastreamheader.nSrcLen = xaheader.nDataLen;
|
|||
|
|
xastreamheader.nSrcUsed = 0;
|
|||
|
|
xastreamheader.pDst = pWavBuf;
|
|||
|
|
xastreamheader.nDstLen = dlen;
|
|||
|
|
xastreamheader.nDstUsed = 0;
|
|||
|
|
bool b = xaDecodeConvert( hxas, ref xastreamheader );
|
|||
|
|
if ( !b )
|
|||
|
|
{
|
|||
|
|
Trace.TraceError( "Error: xaDecodeConvert(): " + Path.GetFileName( filename ) );
|
|||
|
|
wavBuf = null;
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
#region [ デバッグ表示 ]
|
|||
|
|
//Debug.WriteLine( "**XASTREAMHEADER**" );
|
|||
|
|
//Debug.WriteLine( "nSrcLen= " + xastreamheader.nSrcLen );
|
|||
|
|
//Debug.WriteLine( "nSrcUsed= " + xastreamheader.nSrcUsed );
|
|||
|
|
//Debug.WriteLine( "nDstLen= " + xastreamheader.nDstLen );
|
|||
|
|
//Debug.WriteLine( "nDstUsed= " + xastreamheader.nDstUsed );
|
|||
|
|
#endregion
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
#region [ xaファイルのクローズ ]
|
|||
|
|
bool bb = xaDecodeClose( hxas );
|
|||
|
|
if ( !bb )
|
|||
|
|
{
|
|||
|
|
Trace.TraceError( "Error: xaDecodeClose(): " + Path.GetFileName( filename ) );
|
|||
|
|
}
|
|||
|
|
#endregion
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
#endif
|
|||
|
|
}
|
|||
|
|
}
|