void SoundSource::MixStereoToStereo(Sound* sound, int* dest, unsigned samples, int mixRate)
{
float totalGain = masterGain_ * attenuation_ * gain_;
int vol = (int)(256.0f * totalGain + 0.5f);
if (!vol)
{
MixZeroVolume(sound, samples, mixRate);
return;
}
float add = frequency_ / (float)mixRate;
int intAdd = (int)add;
int fractAdd = (int)((add - floorf(add)) * 65536.0f);
int fractPos = fractPosition_;
if (sound->IsSixteenBit())
{
short* pos = (short*)position_;
short* end = (short*)sound->GetEnd();
short* repeat = (short*)sound->GetRepeat();
if (sound->IsLooped())
{
while (samples--)
{
*dest = *dest + (pos[0] * vol) / 256;
++dest;
*dest = *dest + (pos[1] * vol) / 256;
++dest;
INC_POS_STEREO_LOOPED();
}
position_ = (signed char*)pos;
}
else
{
while (samples--)
{
*dest = *dest + (pos[0] * vol) / 256;
++dest;
*dest = *dest + (pos[1] * vol) / 256;
++dest;
INC_POS_STEREO_ONESHOT();
}
position_ = (signed char*)pos;
}
}
else
{
signed char* pos = (signed char*)position_;
signed char* end = sound->GetEnd();
signed char* repeat = sound->GetRepeat();
if (sound->IsLooped())
{
while (samples--)
{
*dest = *dest + pos[0] * vol;
++dest;
*dest = *dest + pos[1] * vol;
++dest;
INC_POS_STEREO_LOOPED();
}
position_ = pos;
}
else
{
while (samples--)
{
*dest = *dest + pos[0] * vol;
++dest;
*dest = *dest + pos[1] * vol;
++dest;
INC_POS_STEREO_ONESHOT();
}
position_ = pos;
}
}
fractPosition_ = fractPos;
}
void SoundSource::MixStereoToMonoIP(Sound* sound, int* dest, unsigned samples, int mixRate)
{
float totalGain = audio_->GetSoundSourceMasterGain(soundType_) * attenuation_ * gain_;
int vol = (int)(256.0f * totalGain + 0.5f);
if (!vol)
{
MixZeroVolume(sound, samples, mixRate);
return;
}
float add = frequency_ / (float)mixRate;
int intAdd = (int)add;
int fractAdd = (int)((add - floorf(add)) * 65536.0f);
int fractPos = fractPosition_;
if (sound->IsSixteenBit())
{
short* pos = (short*)position_;
short* end = (short*)sound->GetEnd();
short* repeat = (short*)sound->GetRepeat();
if (sound->IsLooped())
{
while (--samples)
{
int s = (GET_IP_SAMPLE_LEFT() + GET_IP_SAMPLE_RIGHT()) / 2;
*dest = *dest + (s * vol) / 256;
++dest;
INC_POS_STEREO_LOOPED();
}
position_ = (signed char*)pos;
}
else
{
while (--samples)
{
int s = (GET_IP_SAMPLE_LEFT() + GET_IP_SAMPLE_RIGHT()) / 2;
*dest = *dest + (s * vol) / 256;
++dest;
INC_POS_STEREO_ONESHOT();
}
position_ = (signed char*)pos;
}
}
else
{
signed char* pos = (signed char*)position_;
signed char* end = sound->GetEnd();
signed char* repeat = sound->GetRepeat();
if (sound->IsLooped())
{
while (--samples)
{
int s = (GET_IP_SAMPLE_LEFT() + GET_IP_SAMPLE_RIGHT()) / 2;
*dest = *dest + s * vol;
++dest;
INC_POS_STEREO_LOOPED();
}
position_ = pos;
}
else
{
while (--samples)
{
int s = (GET_IP_SAMPLE_LEFT() + GET_IP_SAMPLE_RIGHT()) / 2;
*dest = *dest + s * vol;
++dest;
INC_POS_STEREO_ONESHOT();
}
position_ = pos;
}
}
fractPosition_ = fractPos;
}