// ----------------------------------------------------------------------------
void PlayerLibSidplay::setFilterSettingsFromPlaybackSettings(sid_filter_t& filterSettings, PlaybackSettings* settings)
// ----------------------------------------------------------------------------
{
filterSettings.distortion_enable = settings->mEnableFilterDistortion;
filterSettings.rate = settings->mDistortionRate;
filterSettings.headroom = settings->mDistortionHeadroom;
if (settings->mFilterType == SID_FILTER_8580)
{
filterSettings.opmin = -99999;
filterSettings.opmax = 99999;
filterSettings.points = sDefault8580PointCount;
memcpy(filterSettings.cutoff, sDefault8580, sizeof(sDefault8580));
}
else
{
filterSettings.opmin = -20000;
filterSettings.opmax = 20000;
filterSettings.points = 0x800;
for (int i = 0; i < 0x800; i++)
{
float i_kinked = approximate_dac(i, settings->mFilterKinkiness);
float freq = settings->mFilterBaseLevel + powf(2.0f, (i_kinked - settings->mFilterOffset) / settings->mFilterSteepness);
// Better expression for this required.
// As it stands, it's kinda embarrassing.
for (float j = 1000.f; j < 18500.f; j += 500.f)
{
if (freq > j)
freq -= (freq - j) / settings->mFilterRolloff;
}
if (freq > 18500)
freq = 18500;
filterSettings.cutoff[i][0] = i;
filterSettings.cutoff[i][1] = freq;
}
}
}
// ----------------------------------------------------------------------------
void PlayerLibSidplay::setupSIDInfo()
// ----------------------------------------------------------------------------
{
if (mSidTune == NULL)
return;
mSidTune->getInfo(mTuneInfo);
mCurrentSubtune = mTuneInfo.currentSong;
mSubtuneCount = mTuneInfo.songs;
mDefaultSubtune = mTuneInfo.startSong;
if (getCurrentChipModel() == sChipModel8580)
{
printf("8580\n");
mFilterSettings.distortion_enable = true;
mFilterSettings.rate = 3200;
mFilterSettings.headroom = 235;
mFilterSettings.opmin = -99999;
mFilterSettings.opmax = 99999;
mFilterSettings.points = sDefault8580PointCount;
memcpy(mFilterSettings.cutoff, sDefault8580, sizeof(sDefault8580));
mBuilder->set_filter((sid_filter_t*)NULL, mPlaybackSettings.mOverrideCutoffCurve);
}
else
{
printf("6581\n");
mFilterSettings.distortion_enable = true;
mFilterSettings.rate = 1500;
mFilterSettings.headroom = 300;
mFilterSettings.opmin = -20000;
mFilterSettings.opmax = 20000;
float filterKinkiness = 0.17f;
float filterBaseLevel = 210.0f;
float filterOffset = -375.0f;
float filterSteepness = 120.0f;
float filterRolloff = 5.5f;
mFilterSettings.points = 0x800;
for (int i = 0; i < 0x800; i++)
{
float i_kinked = approximate_dac(i, filterKinkiness);
float freq = filterBaseLevel + powf(2.0f, (i_kinked - filterOffset) / filterSteepness);
// Better expression for this required.
// As it stands, it's kinda embarrassing.
for (float j = 1000.f; j < 18500.f; j += 500.f)
{
if (freq > j)
freq -= (freq - j) / filterRolloff;
}
if (freq > 18500)
freq = 18500;
mFilterSettings.cutoff[i][0] = i;
mFilterSettings.cutoff[i][1] = freq;
}
mBuilder->set_filter(&mFilterSettings, mPlaybackSettings.mOverrideCutoffCurve);
}
}
