public void append(double[] L, double[] R, int length)
{
try {
if (m_bit_per_sample == 8)
{
if (m_channel == 1)
{
for (int i = 0; i < length; i++)
{
m_stream.WriteByte((byte)((L[i] + R[i] + 2.0) * 63.75));
}
}
else
{
for (int i = 0; i < length; i++)
{
m_stream.WriteByte((byte)((L[i] + 1.0) * 127.5));
m_stream.WriteByte((byte)((R[i] + 1.0) * 127.5));
}
}
}
else
{
byte[] buf;
if (m_channel == 1)
{
for (int i = 0; i < length; i++)
{
buf = PortUtil.getbytes_int16_le((short)((L[i] + R[i]) * 16384.0));
writeByteArray(m_stream, buf, 2);
}
}
else
{
for (int i = 0; i < length; i++)
{
buf = PortUtil.getbytes_int16_le((short)(L[i] * 32768.0));
writeByteArray(m_stream, buf, 2);
buf = PortUtil.getbytes_int16_le((short)(R[i] * 32768.0));
writeByteArray(m_stream, buf, 2);
}
}
}
m_total_samples += (int)length;
} catch (Exception ex) {
serr.println("WaveWriter#append(double[],double[],int); ex=" + ex);
}
}
public void append(short[] L, short[] R)
{
int total = Math.Min(L.Length, R.Length);
if (m_bit_per_sample == 8)
{
if (m_channel == 1)
{
for (int i = 0; i < total; i++)
{
m_stream.WriteByte((byte)(((L[i] + R[i]) / 2f + 32768f) / 255f));
}
}
else
{
for (int i = 0; i < total; i++)
{
m_stream.WriteByte((byte)((L[i] + 32768f) / 255f));
m_stream.WriteByte((byte)((R[i] + 32768f) / 255f));
}
}
}
else
{
byte[] buf;
if (m_channel == 1)
{
for (int i = 0; i < total; i++)
{
buf = PortUtil.getbytes_int16_le((short)((L[i] + R[i]) / 2));
writeByteArray(m_stream, buf, 2);
}
}
else
{
for (int i = 0; i < total; i++)
{
buf = PortUtil.getbytes_int16_le(L[i]);
writeByteArray(m_stream, buf, 2);
buf = PortUtil.getbytes_int16_le(R[i]);
writeByteArray(m_stream, buf, 2);
}
}
}
m_total_samples += (int)total;
}
public void append(float[] L, float[] R)
{
int total = Math.Min(L.Length, R.Length);
if (m_bit_per_sample == 8)
{
if (m_channel == 1)
{
for (int i = 0; i < total; i++)
{
m_stream.WriteByte((byte)((L[i] + R[i] + 2.0f) * 63.75f));
}
}
else
{
for (int i = 0; i < total; i++)
{
m_stream.WriteByte((byte)((L[i] + 1.0f) * 127.5f));
m_stream.WriteByte((byte)((R[i] + 1.0f) * 127.5f));
}
}
}
else
{
byte[] buf;
if (m_channel == 1)
{
for (int i = 0; i < total; i++)
{
buf = PortUtil.getbytes_int16_le((short)((L[i] + R[i]) * 16384f));
writeByteArray(m_stream, buf, 2);
}
}
else
{
for (int i = 0; i < total; i++)
{
buf = PortUtil.getbytes_int16_le((short)(L[i] * 32768f));
writeByteArray(m_stream, buf, 2);
buf = PortUtil.getbytes_int16_le((short)(R[i] * 32768f));
writeByteArray(m_stream, buf, 2);
}
}
}
m_total_samples += (int)total;
}
public void append(double[] L)
{
int total = L.Length;
if (m_bit_per_sample == 8)
{
if (m_channel == 1)
{
for (int i = 0; i < total; i++)
{
m_stream.WriteByte((byte)((L[i] + 1.0) * 127.5));
}
}
else
{
for (int i = 0; i < total; i++)
{
byte b = (byte)((L[i] + 1.0) * 127.5);
m_stream.WriteByte(b);
m_stream.WriteByte(b);
}
}
}
else
{
byte[] buf;
if (m_channel == 1)
{
for (int i = 0; i < total; i++)
{
buf = PortUtil.getbytes_int16_le((short)(L[i] * 32768.0));
writeByteArray(m_stream, buf, 2);
}
}
else
{
for (int i = 0; i < total; i++)
{
buf = PortUtil.getbytes_int16_le((short)(L[i] * 32768.0));
writeByteArray(m_stream, buf, 2);
writeByteArray(m_stream, buf, 2);
}
}
}
m_total_samples += (int)total;
}
/// <summary>
/// 第posサンプルからlengthサンプル分、指定した波形データで置き換えます
/// </summary>
/// <param name="pos"></param>
/// <param name="length"></param>
/// <param name="L"></param>
/// <param name="R"></param>
public void replace(long pos, int length, double[] L, double[] R)
{
long lastPos = m_stream.Position;
long posFile = pos * m_channel * m_bit_per_sample / 8 + m_pos_data_chunk;
long streamLen = m_stream.Length;
if (streamLen < posFile)
{
// ファイルの長さが足りていない場合、とりあえず0で埋める。
m_stream.Seek(streamLen - 1, SeekOrigin.Begin);
long remain = posFile - streamLen;
int buflen = 1024;
byte[] data = new byte[buflen];
while (remain > 0)
{
int delta = remain > buflen ? buflen : (int)remain;
m_stream.Write(data, 0, delta);
remain -= delta;
}
m_total_samples = pos;
}
m_stream.Seek(posFile, SeekOrigin.Begin);
// 書き込み
if (m_bit_per_sample == 8)
{
if (m_channel == 1)
{
for (int i = 0; i < length; i++)
{
m_stream.WriteByte((byte)((L[i] + R[i] + 2.0) * 63.75));
}
}
else
{
for (int i = 0; i < length; i++)
{
m_stream.WriteByte((byte)((L[i] + 1.0) * 127.5));
m_stream.WriteByte((byte)((R[i] + 1.0) * 127.5));
}
}
}
else
{
byte[] buf;
if (m_channel == 1)
{
for (int i = 0; i < length; i++)
{
buf = PortUtil.getbytes_int16_le((short)((L[i] + R[i]) * 16384.0));
writeByteArray(m_stream, buf, 2);
}
}
else
{
for (int i = 0; i < length; i++)
{
buf = PortUtil.getbytes_int16_le((short)(L[i] * 32768.0));
writeByteArray(m_stream, buf, 2);
buf = PortUtil.getbytes_int16_le((short)(R[i] * 32768.0));
writeByteArray(m_stream, buf, 2);
}
}
}
m_total_samples = (m_total_samples < pos + length) ? (pos + length) : (m_total_samples);
// 最後にファイルポインタを戻す
m_stream.Seek(lastPos, SeekOrigin.Begin);
}
