// S_LoadSound
private SoundEffectCache_t LoadSound(SoundEffect_t s)
{
// see if still in memory
var sc = ( SoundEffectCache_t )Host.Cache.Check(s.cache);
if (sc != null)
{
return(sc);
}
// load it in
var namebuffer = "sound/" + s.name;
var data = FileSystem.LoadFile(namebuffer);
if (data == null)
{
Host.Console.Print("Couldn't load {0}\n", namebuffer);
return(null);
}
var info = GetWavInfo(s.name, data);
if (info.channels != 1)
{
Host.Console.Print("{0} is a stereo sample\n", s.name);
return(null);
}
var stepscale = info.rate / ( Single )_shm.speed;
var len = ( Int32 )(info.samples / stepscale);
len *= info.width * info.channels;
s.cache = Host.Cache.Alloc(len, s.name);
if (s.cache == null)
{
return(null);
}
sc = new SoundEffectCache_t( );
sc.length = info.samples;
sc.loopstart = info.loopstart;
sc.speed = info.rate;
sc.width = info.width;
sc.stereo = info.channels;
s.cache.data = sc;
ResampleSfx(s, sc.speed, sc.width, new ByteArraySegment(data, info.dataofs));
return(sc);
}
// SND_PaintChannelFrom16
private void PaintChannelFrom16(Channel_t ch, SoundEffectCache_t sc, int count)
{
var leftvol = ch.leftvol;
var rightvol = ch.rightvol;
var sfx = sc.data;
var offset = ch.pos * 2; // sfx = (signed short *)sc->data + ch->pos;
for (var i = 0; i < count; i++)
{
int data = ( short )(( ushort )sfx[offset] + (( ushort )sfx[offset + 1] << 8)); // Uze: check is this is right!!!
var left = (data * leftvol) >> 8;
var right = (data * rightvol) >> 8;
this._PaintBuffer[i].left += left;
this._PaintBuffer[i].right += right;
offset += 2;
}
ch.pos += count;
}
// SND_PaintChannelFrom8
private void PaintChannelFrom8(Channel_t ch, SoundEffectCache_t sc, int count)
{
if (ch.leftvol > 255)
{
ch.leftvol = 255;
}
if (ch.rightvol > 255)
{
ch.rightvol = 255;
}
var lscale = ch.leftvol >> 3;
var rscale = ch.rightvol >> 3;
var sfx = sc.data;
var offset = ch.pos;
for (var i = 0; i < count; i++)
{
int data = sfx[offset + i];
this._PaintBuffer[i].left += this._ScaleTable[lscale, data];
this._PaintBuffer[i].right += this._ScaleTable[rscale, data];
}
ch.pos += count;
}
