void RefreshBuffer()
{
CalculationFunctions calc = new CalculationFunctions();
int ReadPosition;
// variable to count byte difference in compressed and non compressed data of audio file
int reduction = 0;
while (m_lPlayed < m_lLength)
{ //1
if (SoundBuffer.Status.BufferLost)
{
SoundBuffer.Restore();
}
reduction = 0;
Thread.Sleep(50);
ReadPosition = SoundBuffer.PlayPosition;
if (ReadPosition < ((m_SizeBuffer) - m_UpdateVMArrayLength))
{
Array.Copy(SoundBuffer.Read(ReadPosition, typeof(byte), LockFlag.None, m_UpdateVMArrayLength), arUpdateVM, m_UpdateVMArrayLength);
ob_UpdateVuMeter.NotifyUpdateVuMeter(this, ob_UpdateVuMeter);
}
// check if play cursor is in second half , then refresh first half else second
if ((m_BufferCheck % 2) == 1 && SoundBuffer.PlayPosition > m_RefreshLength)
{ //2
// Checks if file is played or byteBuffer is played
if (m_PlayFile == true)
{ //3
// check for normal or fast play
if (m_FastPlay == false)
{ //4
SoundBuffer.Write(0, fs, m_RefreshLength, 0);
} //-4
else
{ //4
for (int i = 0; i < m_RefreshLength; i = i + (m_Step * m_FrameSize))
{
SoundBuffer.Write(i, fs, m_Step * m_FrameSize, 0);
i = i - (2 * m_FrameSize);
reduction = reduction + (2 * m_FrameSize);
} //-4
} //-3
} //-2
else
{ //2
for (int i = 0; i < m_RefreshLength; i++)
{
RefreshArray[i] = ByteBuffer [m_lArrayPosition + i];
}
SoundBuffer.Write(0, RefreshArray, 0);
m_lArrayPosition = m_lArrayPosition + m_RefreshLength;
} //-2
m_lPlayed = m_lPlayed + m_RefreshLength + reduction;
m_BufferCheck++;
} //-1
else if ((m_BufferCheck % 2 == 0) && SoundBuffer.PlayPosition < m_RefreshLength)
{ //1
if (m_PlayFile == true)
{ //2
if (m_FastPlay == false)
{ //3
SoundBuffer.Write(m_RefreshLength, fs, m_RefreshLength, 0);
} //-3
else
{ //3
for (int i = 0; i < m_RefreshLength; i = i + (m_Step * m_FrameSize))
{ //4
SoundBuffer.Write(i + m_RefreshLength, fs, m_Step * m_FrameSize, 0);
i = i - (2 * m_FrameSize);
reduction = reduction + (2 * m_FrameSize);
} //-4
// end of FastPlay check
} //-3
} //-2
else
{ //2
for (int i = 0; i < m_RefreshLength; i++)
{
RefreshArray[i] = ByteBuffer [m_lArrayPosition + i];
}
SoundBuffer.Write(m_RefreshLength, RefreshArray, 0);
m_lArrayPosition = m_lArrayPosition + m_RefreshLength;
// end of file check
} //-2
m_lPlayed = m_lPlayed + m_RefreshLength + reduction;
m_BufferCheck++;
// end of even/ odd part of buffer;
} //-1
// end of while
}
// calculate time to stop according to remaining data
int time;
long lRemaining = (m_lPlayed - m_lLength);
double dTemp;
dTemp = ((m_RefreshLength + m_RefreshLength - lRemaining) * 1000) / m_RefreshLength;
time = Convert.ToInt32(dTemp * 0.48);
//if (m_FastPlay == true)
//time = (time-250) * (1- (2/m_Step));
Thread.Sleep(time);
// Stopping process begins
SoundBuffer.Stop();
if (m_PlayFile == true)
{
fs.Close();
ob_EndOfAudioAsset.NotifyEndOfAudioAsset(this, ob_EndOfAudioAsset);
}
else
{
m_lArrayPosition = 0;
ByteBuffer = null;
ob_EndOfAudioBuffer.NotifyEndOfAudioBuffer(this, ob_EndOfAudioBuffer);
}
//Stop () ;
// changes the state and trigger events
//ob_StateChanged = new StateChanged (m_State) ;
//StateChanged ob_StateChanged = new StateChanged (m_State) ;
StateChanged ob_StateChanged = StateChanged.From(m_State);
m_State = AudioPlayerState.stopped;
TriggerStateChangedEvent(ob_StateChanged);
StateChangedEvent(this, ob_StateChanged);
//ob_EndOfFile.TriggerEndOfFileEvent ( m_Asset.Path);
// RefreshBuffer ends
}
