326 lines
9.4 KiB
C#
326 lines
9.4 KiB
C#
|
/* This file is part of CustomizeMii
|
|||
|
|
* Copyright (C) 2009 Leathl
|
|||
|
|
*
|
|||
|
|
* CustomizeMii is free software: you can redistribute it and/or
|
|||
|
|
* modify it under the terms of the GNU General Public License as published
|
|||
|
|
* by the Free Software Foundation, either version 3 of the License, or
|
|||
|
|
* (at your option) any later version.
|
|||
|
|
*
|
|||
|
|
* CustomizeMii is distributed in the hope that it will be
|
|||
|
|
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
|
|||
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|||
|
|
* GNU General Public License for more details.
|
|||
|
|
*
|
|||
|
|
* You should have received a copy of the GNU General Public License
|
|||
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
using System;
|
|||
|
|
using System.IO;
|
|||
|
|
|
|||
|
|
namespace WaveFile
|
|||
|
|
{
|
|||
|
|
/// <summary>
|
|||
|
|
/// A class for RIFF Wave files
|
|||
|
|
/// </summary>
|
|||
|
|
public class Wave
|
|||
|
|
{
|
|||
|
|
//Private Variables
|
|||
|
|
private int fmtOffset;
|
|||
|
|
private int dataOffset;
|
|||
|
|
private int smplOffset;
|
|||
|
|
private byte[] waveFile;
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
//Public Variables
|
|||
|
|
/// <summary>
|
|||
|
|
/// The Samplerate of the Wave file
|
|||
|
|
/// </summary>
|
|||
|
|
public int SampleRate { get { return GetSampleRate(); } }
|
|||
|
|
/// <summary>
|
|||
|
|
/// The Bitdepth of the Wave file
|
|||
|
|
/// </summary>
|
|||
|
|
public int BitDepth { get { return GetBitDepth(); } }
|
|||
|
|
/// <summary>
|
|||
|
|
/// The number of channels of the Wave file
|
|||
|
|
/// </summary>
|
|||
|
|
public int ChannelCount { get { return GetChannelCount(); } }
|
|||
|
|
/// <summary>
|
|||
|
|
/// The format of the Wave file's data. 1 = PCM
|
|||
|
|
/// </summary>
|
|||
|
|
public int DataFormat { get { return GetDataFormat(); } }
|
|||
|
|
/// <summary>
|
|||
|
|
/// The number of Loops in the Wave file
|
|||
|
|
/// </summary>
|
|||
|
|
public int LoopCount { get { return GetLoopCount(); } }
|
|||
|
|
/// <summary>
|
|||
|
|
/// The start sample of the first Loop (if exist)
|
|||
|
|
/// </summary>
|
|||
|
|
public int LoopStart { get { return GetLoopStart(); } }
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
//Public Functions
|
|||
|
|
|
|||
|
|
public Wave(string waveFile)
|
|||
|
|
{
|
|||
|
|
using (FileStream fs = new FileStream(waveFile, FileMode.Open))
|
|||
|
|
{
|
|||
|
|
byte[] temp = new byte[fs.Length];
|
|||
|
|
fs.Read(temp, 0, temp.Length);
|
|||
|
|
|
|||
|
|
this.waveFile = temp;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (!CheckWave()) throw new Exception("This is not a supported PCM Wave File!");
|
|||
|
|
|
|||
|
|
if (!GetFmtOffset()) throw new Exception("The format section couldn't be found!");
|
|||
|
|
if (!GetDataOffset()) throw new Exception("The data section couldn't be found!");
|
|||
|
|
GetSmplOffset();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public Wave(byte[] waveFile)
|
|||
|
|
{
|
|||
|
|
this.waveFile = waveFile;
|
|||
|
|
|
|||
|
|
if (!CheckWave()) throw new Exception("This is not a supported PCM Wave File!");
|
|||
|
|
|
|||
|
|
if (!GetFmtOffset()) throw new Exception("The format section couldn't be found!");
|
|||
|
|
if (!GetDataOffset()) throw new Exception("The data section couldn't be found!");
|
|||
|
|
GetSmplOffset();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Returns the Wave file as a Byte Array
|
|||
|
|
/// </summary>
|
|||
|
|
/// <returns></returns>
|
|||
|
|
public byte[] ToByteArray()
|
|||
|
|
{
|
|||
|
|
return waveFile;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Returns the Wave file as a Memory Stream
|
|||
|
|
/// </summary>
|
|||
|
|
/// <returns></returns>
|
|||
|
|
public MemoryStream ToMemoryStream()
|
|||
|
|
{
|
|||
|
|
return new MemoryStream(waveFile);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Returns only the audio data of the Wave file (No header or anything else)
|
|||
|
|
/// </summary>
|
|||
|
|
/// <returns></returns>
|
|||
|
|
public byte[] GetAllFrames()
|
|||
|
|
{
|
|||
|
|
int dataLength = GetDataLength();
|
|||
|
|
|
|||
|
|
MemoryStream ms = new MemoryStream();
|
|||
|
|
ms.Write(waveFile, dataOffset, dataLength);
|
|||
|
|
|
|||
|
|
return ms.ToArray();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Closes the Wave file
|
|||
|
|
/// </summary>
|
|||
|
|
public void Close()
|
|||
|
|
{
|
|||
|
|
waveFile = null;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
//Private Functions
|
|||
|
|
|
|||
|
|
private int GetLoopStart()
|
|||
|
|
{
|
|||
|
|
if (smplOffset == -1) return 0;
|
|||
|
|
|
|||
|
|
byte[] temp = new byte[4];
|
|||
|
|
|
|||
|
|
temp[0] = waveFile[smplOffset + 52];
|
|||
|
|
temp[1] = waveFile[smplOffset + 53];
|
|||
|
|
temp[2] = waveFile[smplOffset + 54];
|
|||
|
|
temp[3] = waveFile[smplOffset + 55];
|
|||
|
|
|
|||
|
|
return BitConverter.ToInt32(temp, 0);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private int GetLoopCount()
|
|||
|
|
{
|
|||
|
|
if (smplOffset == -1) return 0;
|
|||
|
|
|
|||
|
|
byte[] temp = new byte[4];
|
|||
|
|
|
|||
|
|
temp[0] = waveFile[smplOffset + 36];
|
|||
|
|
temp[1] = waveFile[smplOffset + 37];
|
|||
|
|
temp[2] = waveFile[smplOffset + 38];
|
|||
|
|
temp[3] = waveFile[smplOffset + 39];
|
|||
|
|
|
|||
|
|
return BitConverter.ToInt32(temp, 0);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private bool GetSmplOffset()
|
|||
|
|
{
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
int length = (waveFile.Length > 5004 ? (waveFile.Length - 5000) : 0);
|
|||
|
|
for (int i = waveFile.Length - 4; i > length; i--)
|
|||
|
|
{
|
|||
|
|
if (waveFile[i] == 's' &&
|
|||
|
|
waveFile[i + 1] == 'm' &&
|
|||
|
|
waveFile[i + 2] == 'p' &&
|
|||
|
|
waveFile[i + 3] == 'l')
|
|||
|
|
{
|
|||
|
|
this.smplOffset = i;
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
catch { }
|
|||
|
|
|
|||
|
|
for (int i = 0; i < waveFile.Length - 4; i++)
|
|||
|
|
{
|
|||
|
|
if (waveFile[i] == 's' &&
|
|||
|
|
waveFile[i + 1] == 'm' &&
|
|||
|
|
waveFile[i + 2] == 'p' &&
|
|||
|
|
waveFile[i + 3] == 'l')
|
|||
|
|
{
|
|||
|
|
this.smplOffset = i;
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
this.smplOffset = -1;
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private bool GetFmtOffset()
|
|||
|
|
{
|
|||
|
|
if (waveFile[12] == 'f' &&
|
|||
|
|
waveFile[13] == 'm' &&
|
|||
|
|
waveFile[14] == 't' &&
|
|||
|
|
waveFile[15] == ' ')
|
|||
|
|
{
|
|||
|
|
this.fmtOffset = 12;
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
int length = (waveFile.Length > 5004 ? 5000 : waveFile.Length - 4);
|
|||
|
|
for (int i = 0; i < length; i++)
|
|||
|
|
{
|
|||
|
|
if (waveFile[i] == 'f' &&
|
|||
|
|
waveFile[i + 1] == 'm' &&
|
|||
|
|
waveFile[i + 2] == 't' &&
|
|||
|
|
waveFile[i + 3] == ' ')
|
|||
|
|
{
|
|||
|
|
this.fmtOffset = i;
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
this.fmtOffset = -1;
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private int GetDataLength()
|
|||
|
|
{
|
|||
|
|
byte[] temp = new byte[4];
|
|||
|
|
|
|||
|
|
temp[0] = waveFile[dataOffset + 4];
|
|||
|
|
temp[1] = waveFile[dataOffset + 5];
|
|||
|
|
temp[2] = waveFile[dataOffset + 6];
|
|||
|
|
temp[3] = waveFile[dataOffset + 7];
|
|||
|
|
|
|||
|
|
return BitConverter.ToInt32(temp, 0);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private bool GetDataOffset()
|
|||
|
|
{
|
|||
|
|
if (waveFile[40] == 'd' &&
|
|||
|
|
waveFile[41] == 'a' &&
|
|||
|
|
waveFile[42] == 't' &&
|
|||
|
|
waveFile[43] == 'a')
|
|||
|
|
{
|
|||
|
|
this.dataOffset = 40;
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
for (int i = 0; i < waveFile.Length - 4; i++)
|
|||
|
|
{
|
|||
|
|
if (waveFile[i] == 'd' &&
|
|||
|
|
waveFile[i + 1] == 'a' &&
|
|||
|
|
waveFile[i + 2] == 't' &&
|
|||
|
|
waveFile[i + 3] == 'a')
|
|||
|
|
{
|
|||
|
|
this.dataOffset = i;
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
this.dataOffset = -1;
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private int GetSampleRate()
|
|||
|
|
{
|
|||
|
|
byte[] temp = new byte[4];
|
|||
|
|
|
|||
|
|
temp[0] = waveFile[fmtOffset + 12];
|
|||
|
|
temp[1] = waveFile[fmtOffset + 13];
|
|||
|
|
temp[2] = waveFile[fmtOffset + 14];
|
|||
|
|
temp[3] = waveFile[fmtOffset + 15];
|
|||
|
|
|
|||
|
|
return BitConverter.ToInt32(temp, 0);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private int GetBitDepth()
|
|||
|
|
{
|
|||
|
|
byte[] temp = new byte[2];
|
|||
|
|
|
|||
|
|
temp[0] = waveFile[fmtOffset + 22];
|
|||
|
|
temp[1] = waveFile[fmtOffset + 23];
|
|||
|
|
|
|||
|
|
return BitConverter.ToInt16(temp, 0);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private int GetChannelCount()
|
|||
|
|
{
|
|||
|
|
byte[] temp = new byte[2];
|
|||
|
|
|
|||
|
|
temp[0] = waveFile[fmtOffset + 10];
|
|||
|
|
temp[1] = waveFile[fmtOffset + 11];
|
|||
|
|
|
|||
|
|
return BitConverter.ToInt16(temp, 0);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private int GetDataFormat()
|
|||
|
|
{
|
|||
|
|
byte[] temp = new byte[2];
|
|||
|
|
|
|||
|
|
temp[0] = waveFile[fmtOffset + 8];
|
|||
|
|
temp[1] = waveFile[fmtOffset + 9];
|
|||
|
|
|
|||
|
|
return BitConverter.ToInt16(temp, 0);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private bool CheckWave()
|
|||
|
|
{
|
|||
|
|
if (waveFile[0] != 'R' ||
|
|||
|
|
waveFile[1] != 'I' ||
|
|||
|
|
waveFile[2] != 'F' ||
|
|||
|
|
waveFile[3] != 'F' ||
|
|||
|
|
|
|||
|
|
waveFile[8] != 'W' ||
|
|||
|
|
waveFile[9] != 'A' ||
|
|||
|
|
waveFile[10] != 'V' ||
|
|||
|
|
waveFile[11] != 'E') return false;
|
|||
|
|
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|