// @Brief : Get normalized data with Float. Between -1 and 1
public override float[] GetData()
{
// Since it is acquired every 2 bytes from pWaveData, it halves the length of pResult
float[] pResult = new float[pLength / 2];
int sByteIndex = 0;
for (int sIndex = 0; sIndex < pResult.Length; sIndex++)
{
// Get 2 byte
short pShort = KrByteReader.ByteToShort(pWaveData, ref sByteIndex);
// Convert byte to float -1 to 1
// NOTE : 1. Convert the value to a float
// : 2. Divide the value by 32768 to complete the conversion
pResult[sIndex] = (float)pShort / (short.MaxValue + 1);
}
return(pResult);
}
//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
// PROTECTED FUNCTION
//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
// @Brief : Convert bytes
// @Param : pBytes => byte data
protected override void ConvertBytes(byte[] pBytes)
{
KrDebug.Log("Read wav data", typeof(KrWav));
int sIndex = 0;
// Get RIFF header. 4byte
string pRIFFHeader = KrByteReader.ByteToString(pBytes, 4, ref sIndex);
if (!pRIFFHeader.Equals("RIFF"))
{
KrDebug.Assert(false, "Format is not REFF. string = " + pRIFFHeader, typeof(KrWav));
}
// Get Subsequent file sizes. (File size - 8). 4byte
int sFileSize = KrByteReader.ByteToInt(pBytes, ref sIndex);
// Get WAVE header. 4byte
string pWaveHeader = KrByteReader.ByteToString(pBytes, 4, ref sIndex);
if (!pWaveHeader.Equals("WAVE"))
{
KrDebug.Assert(false, "Format is not WAVE string = " + pWaveHeader, typeof(KrWav));
}
while (sIndex < sFileSize)
{
// Get tag
string pTag = KrByteReader.ByteToString(pBytes, 4, ref sIndex);
int sDataLength = KrByteReader.ByteToInt(pBytes, ref sIndex);
if (pTag.Equals("fmt "))
{
m_pFmt = new KrFmtChunk();
m_pFmt.sFormatId = KrByteReader.ByteToShort(pBytes, ref sIndex);
m_pFmt.sChannelNum = KrByteReader.ByteToShort(pBytes, ref sIndex);
m_pFmt.sSampleRate = KrByteReader.ByteToInt(pBytes, ref sIndex);
m_pFmt.sDataSpeed = KrByteReader.ByteToInt(pBytes, ref sIndex);
m_pFmt.sBlockSize = KrByteReader.ByteToShort(pBytes, ref sIndex);
m_pFmt.sBitPerSample = KrByteReader.ByteToShort(pBytes, ref sIndex);
// If sDataLength is greater than 16, there is an extension
if (sDataLength > 16)
{
m_pFmt.sExtensionSize = KrByteReader.ByteToShort(pBytes, ref sIndex);
m_pFmt.pExtension = KrByteReader.ExtractByte(pBytes, m_pFmt.sExtensionSize, ref sIndex);
}
KrDebug.Log(m_pFmt.ToString(), typeof(KrWav));
}
else if (pTag.Equals("data"))
{
// Data output varies depending on the number of bits per sample (bit/sample)
if (m_pFmt.sBitPerSample == 16)
{
m_pData = new KrDataChunk16();
}
else
{
m_pData = new KrDataChunk();
}
m_pData.pLength = sDataLength;
m_pData.pWaveData = KrByteReader.ExtractByte(pBytes, sDataLength, ref sIndex);
KrDebug.Log(m_pData.ToString(), typeof(KrWav));
}
else
{
// Add data length
sIndex += sDataLength;
}
}
KrDebug.Log("Read complete", typeof(KrWav));
}
