void S_Update_(void) {
unsigned endtime;
int samps;
static float lastTime = 0.0f;
float ma, op;
float thisTime, sane;
static int ot = -1;
if ( !s_soundStarted || s_soundMuted ) {
return;
}
thisTime = Com_Milliseconds();
// Updates s_soundtime
S_GetSoundtime();
if (s_soundtime == ot) {
return;
}
ot = s_soundtime;
// clear any sound effects that end before the current time,
// and start any new sounds
S_ScanChannelStarts();
sane = thisTime - lastTime;
if (sane<11) {
sane = 11; // 85hz
}
ma = s_mixahead->value * dma.speed;
op = s_mixPreStep->value + sane*dma.speed*0.01;
if (op < ma) {
ma = op;
}
// mix ahead of current position
endtime = s_soundtime + ma;
// mix to an even submission block size
endtime = (endtime + dma.submission_chunk-1)
& ~(dma.submission_chunk-1);
// never mix more than the complete buffer
samps = dma.samples >> (dma.channels-1);
if (endtime - s_soundtime > samps)
endtime = s_soundtime + samps;
SNDDMA_BeginPainting ();
S_PaintChannels (endtime);
SNDDMA_Submit ();
lastTime = thisTime;
}
void S_Update_(void)
{
unsigned endtime;
int samps;
static float lastTime = 0.0f;
float ma, op;
float thisTime, sane;
static int ot = -1;
if (!s_soundStarted || s_soundMuted)
{
return;
}
thisTime = Sys_Milliseconds();
// Updates s_soundtime
S_GetSoundtime();
if (s_soundtime == ot)
{
return;
}
ot = s_soundtime;
// clear any sound effects that end before the current time,
// and start any new sounds
S_ScanChannelStarts();
sane = thisTime - lastTime;
if (sane < 11)
{
sane = 11; // 85hz
}
ma = s_mixahead->value * dma.speed;
op = s_mixPreStep->value + sane * dma.speed * 0.01;
if (op < ma)
{
ma = op;
}
// mix ahead of current position
endtime = s_soundtime + ma;
// mix to an even submission block size
endtime = (endtime + dma.submission_chunk - 1)
& ~(dma.submission_chunk - 1);
// never mix more than the complete buffer
samps = dma.samples >> (dma.channels - 1);
if (endtime - s_soundtime > samps)
{
endtime = s_soundtime + samps;
}
// global volume fading
// endtime or s_paintedtime or s_soundtime...
if (s_soundtime < s_volTime2) // still has fading to do
{
if (s_soundtime > s_volTime1) // has started fading
{
s_volFadeFrac = ((float)(s_soundtime - s_volTime1) / (float)(s_volTime2 - s_volTime1));
s_volCurrent = ((1.0f - s_volFadeFrac) * s_volStart + s_volFadeFrac * s_volTarget);
}
else
{
s_volCurrent = s_volStart;
}
}
else
{
s_volCurrent = s_volTarget;
if (s_stopSounds)
{
// stop playing any sounds if they are all faded out
S_StopAllSounds();
s_stopSounds = qfalse;
}
}
SNDDMA_BeginPainting();
S_PaintChannels(endtime);
SNDDMA_Submit();
lastTime = thisTime;
}
