void
GameSoundBuffer::UpdateMods()
{
// adjust the gain if needed
if (fGainRamp) {
if (ChangeRamp(fGainRamp)) {
delete fGainRamp;
fGainRamp = NULL;
}
}
// adjust the ramp if needed
if (fPanRamp) {
if (ChangeRamp(fPanRamp)) {
delete fPanRamp;
fPanRamp = NULL;
} else {
if (fPan < 0.0) {
fPanLeft = 1.0;
fPanRight = 1.0 + fPan;
} else {
fPanRight = 1.0;
fPanLeft = 1.0 - fPan;
}
}
}
}
bool FillBuffer(_gs_ramp * ramp, int16 * data, int16 * buffer, size_t * bytes)
{
int32 samples = *bytes / sizeof(int16);
for (int32 byte = 0; byte < samples; byte++) {
float gain = *ramp->value;
data[byte] = int16(float(buffer[byte]) * gain);
if (ChangeRamp(ramp)) {
*bytes = byte * sizeof(int16);
return true;
}
}
return false;
}
bool FillBuffer(_gs_ramp * ramp, float * data, float * buffer, size_t * bytes)
{
size_t byte = 0;
bool bytesAreReady = (*bytes > 0);
while (bytesAreReady) {
float gain = *ramp->value;
data[byte] = buffer[byte] * gain;
if (ChangeRamp(ramp)) {
*bytes = byte;
return true;
}
byte++;
bytesAreReady = (byte >= *bytes);
}
return false;
}
