static void mixaudio( object unused, short[] stream, uint len )
{
SoundData Snd, OldSound;
uint PlayLen, i, Buffer_Len, Buffer_RemainLen;
uint PlayPos;
uint nSounds;
Buffer_Len = len;
for( i = 0; i < Buffer_Len; i++ )
SoundBuffer[i] = 0;
nSounds = 0;
Snd = PlayingSoundList;
while( Snd != null )
{
if( Snd.UseIntCompute )
{
Buffer_RemainLen = Buffer_Len;
while( Buffer_RemainLen != 0 )
{
PlayLen = ( Snd.RLen > Buffer_RemainLen ) ? Buffer_RemainLen : Snd.RLen;
if( PlayLen == 0 )
{
if( Snd.Repeat )
{
Snd.Pos = Snd.RepeatPos;
Snd.RLen = Snd.Len - Snd.RepeatPos;
}
else
{
if( Snd.FlagOnEnd != null ) Snd.FlagOnEnd();
Snd.DeletePending = true;
break;
}
}
else
{
for( i = 0; i < PlayLen / 2; i++ ) SoundBuffer[i] += Snd.Data[i+Snd.Pos];
Buffer_RemainLen -= PlayLen;
Snd.RLen -= PlayLen;
Snd.Pos += PlayLen;
}
}
//SDL_MixAudio(stream, Snd.Data + Snd.Pos, PlayLen, SDL_MIX_MAXVOLUME);
//for (i=0;i<PlayLen-2;i+=2) {((UShort *)stream)[i]=0x0;((UShort *)stream)[i+1]=0x8000;}
}
else
{
double Coef, Temp;
uint BufferPos;
uint MaxOffset;
Buffer_RemainLen = Buffer_Len >> 1;
BufferPos = 0;
MaxOffset = ( Snd.Len >> 1 ) - 1;
double S1, S2, Ir;
uint Offset;
while( Buffer_RemainLen > 0 && ( !Snd.DeletePending ) )
{
Coef = Snd.DPos - ( Temp = Math.Floor( Snd.DPos ) );
Offset = (uint)Temp;
if( Offset < MaxOffset )
{
S1 = Snd.Data[Offset];
S2 = Snd.Data[Offset + 1];
Ir = S1 * ( 1.0 - Coef ) + ( S2 * Coef );
SoundBuffer[BufferPos++] += (uint)Ir;
Buffer_RemainLen--;
Snd.DPos += Snd.FrequencyVar;
}
else
{
if( Snd.Repeat )
{
Snd.DPos = Snd.DRepeatPos;
}
else
{
if( Snd.FlagOnEnd != null ) Snd.FlagOnEnd();// = true;
Snd.DeletePending = true;
break;
}
}
}
}
#if false
OldSound = Snd;
Snd = Snd.NextSound;
// If sound must be deleted
if( OldSound.DeletePending )
{
if( OldSound.PrevSound == null ) PlayingSoundList = OldSound.NextSound;
else OldSound.PrevSound.NextSound = OldSound.NextSound;
if( OldSound.NextSound != null ) OldSound.NextSound.PrevSound = OldSound.PrevSound;
OldSound.NextSound = null;
OldSound.PrevSound = null;
delete OldSound;
}
#endif
nSounds++;
}
// if (nSounds) for (i=0;i<Buffer_Len/2;i++) ((Short *)stream) [i] = (Short)(SoundBuffer[i]/nSounds );
if( nSounds != 0 ) for( i = 0; i < Buffer_Len / 2; i++ ) ( stream )[i] = (short)( SoundBuffer[i] );
//else
//memset( stream, 0, len );
}
void Stop_PlaySound( SoundData SoundHandle )
{
}
void ModifyFrequency( SoundData SoundHandle, double NewFrequency )
{
}
bool IsPlayed( SoundData SoundHandle )
{
return true;
}
public Sound()
{
int i;
SampleCount = 0;
SoundActivated = false; PlayingSoundList = null;
for( i = 0; i < ZSOUND_MAX_SOUNDFILES; i++ ) { SoundBank[i].Used = false;
SoundBank[i].SoundData = null;
SoundBank[i].SoundLen = 0; }
}
SoundData FindSound( SoundData SoundHandle )
{
SoundData Snd;
Snd = PlayingSoundList;
while( Snd != null )
{
if( Snd == SoundHandle )
{
return ( Snd );
}
Snd = Snd.NextSound;
}
return ( null );
}
/// <summary>
/// Reads and decodes the sound stream.
/// </summary>
/// <returns>An OpenTK.Audio.SoundData object that contains the decoded buffer.</returns>
public override SoundData ReadToEnd()
{
try
{
//read the buffer into a byte array, even if the format is 16 bit
//decoded_data = new byte[data_chunk_size];
decoded_data = new SoundData(new SoundFormat(channels, bits_per_sample, sample_rate),
reader.ReadBytes((int)reader.BaseStream.Length));
//Debug.WriteLine("decoded!");
//return new SoundData(decoded_data, new SoundFormat(channels, bits_per_sample, sample_rate));
return decoded_data;
}
catch (AudioReaderException)
{
reader.Close();
throw;
}
}
/// <summary>
/// Reads and decodes the specified number of samples from the sound stream.
/// </summary>
/// <param name="samples">The number of samples to read and decode.</param>
/// <returns>An OpenTK.Audio.SoundData object that contains the decoded buffer.</returns>
public override SoundData ReadSamples(long samples)
{
if (samples > reader.BaseStream.Length - reader.BaseStream.Position)
samples = reader.BaseStream.Length - reader.BaseStream.Position;
//while (samples > decoded_data.Data.Length * (bits_per_sample / 8))
// Array.Resize<byte>(ref decoded_data.Data, decoded_data.Data.Length * 2);
decoded_data = new SoundData(new SoundFormat(channels, bits_per_sample, sample_rate),
reader.ReadBytes((int)samples));
return decoded_data;
}
