void SynthesizeChannel(ChannelState& dst, AYM::ChannelBuilder& channel, AYM::TrackBuilder& track)
{
if (!dst.Enabled)
{
channel.SetLevel(0);
return;
}
const Sample& curSample = Data->Samples.Get(dst.SampleNum);
const Sample::Line& curSampleLine = curSample.GetLine(dst.PosInSample);
const Ornament& curOrnament = Data->Ornaments.Get(dst.OrnamentNum);
//apply tone
const int_t halftones = int_t(dst.Note) + curOrnament.GetLine(dst.PosInOrnament);
channel.SetTone(halftones, dst.Sliding + curSampleLine.Vibrato);
if (curSampleLine.ToneMask)
{
channel.DisableTone();
}
//apply level
channel.SetLevel(GetVolume(dst.Volume, curSampleLine.Level));
//apply envelope
if (dst.Envelope)
{
channel.EnableEnvelope();
}
//apply noise
if (!curSampleLine.NoiseMask)
{
track.SetNoise(curSampleLine.Noise + dst.NoiseAdd);
}
else
{
channel.DisableNoise();
}
//recalculate gliss
if (dst.SlidingTargetNote != LIMITER)
{
const int_t absoluteSlidingRange = track.GetSlidingDifference(dst.Note, dst.SlidingTargetNote);
const int_t realSlidingRange = absoluteSlidingRange - (dst.Sliding + dst.Glissade);
if ((dst.Glissade > 0 && realSlidingRange <= 0) ||
(dst.Glissade < 0 && realSlidingRange >= 0))
{
dst.Note = dst.SlidingTargetNote;
dst.SlidingTargetNote = LIMITER;
dst.Sliding = dst.Glissade = 0;
}
}
dst.Sliding += dst.Glissade;
if (++dst.PosInSample >= curSample.GetSize())
{
dst.PosInSample = curSample.GetLoop();
}
if (++dst.PosInOrnament >= curOrnament.GetSize())
{
dst.PosInOrnament = curOrnament.GetLoop();
}
}
void GetNewChannelState(const Cell& src, ChannelState& dst, AYM::TrackBuilder& track)
{
if (const bool* enabled = src.GetEnabled())
{
dst.Enabled = *enabled;
}
dst.VolSlideCounter = 0;
dst.SlidingSteps = 0;
bool contSample = false, contOrnament = false;
bool reloadNote = false;
for (CommandsIterator it = src.GetCommands(); it; ++it)
{
switch (it->Type)
{
case ENVELOPE:
if (-1 != it->Param1)
{
track.SetEnvelopeType(it->Param1);
}
if (-1 != it->Param2)
{
EnvelopeTone = it->Param2;
track.SetEnvelopeTone(EnvelopeTone);
}
break;
case ENVELOPE_ON:
dst.Envelope = true;
break;
case ENVELOPE_OFF:
dst.Envelope = false;
break;
case NOISE:
dst.BaseNoise = it->Param1;
break;
case CONT_SAMPLE:
contSample = true;
break;
case CONT_ORNAMENT:
contOrnament = true;
break;
case GLISS:
dst.Glissade = it->Param1;
dst.SlidingSteps = -1;//infinite sliding
break;
case SLIDE:
{
dst.SlidingSteps = it->Param1;
const int_t newSliding = (dst.Sliding | 0xf) ^ 0xf;
dst.Glissade = -newSliding / (dst.SlidingSteps ? dst.SlidingSteps : 1);
dst.Sliding = dst.Glissade * dst.SlidingSteps;
break;
}
case SLIDE_NOTE:
{
dst.SlidingSteps = it->Param1;
dst.SlidingTargetNote = it->Param2;
const int_t absoluteSliding = track.GetSlidingDifference(dst.Note, dst.SlidingTargetNote);
const int_t newSliding = absoluteSliding - (contSample ? dst.Sliding / 16 : 0);
dst.Glissade = 16 * newSliding / (dst.SlidingSteps ? dst.SlidingSteps : 1);
reloadNote = true;
break;
}
case AMPLITUDE_SLIDE:
dst.VolSlideCounter = dst.VolSlideDelay = it->Param1;
dst.VolSlideAddon = it->Param2;
break;
case BREAK_SAMPLE:
dst.BreakSample = true;
break;
default:
assert(!"Invalid cmd");
break;
}
}
if (const uint_t* ornament = src.GetOrnament())
{
dst.OrnamentNum = *ornament;
}
if (const uint_t* sample = src.GetSample())
{
dst.SampleNum = *sample;
}
if (const uint_t* note = src.GetNote())
{
dst.Note = *note;
reloadNote = true;
}
if (reloadNote)
{
dst.CurrentNoise = dst.BaseNoise;
if (dst.SlidingSteps <= 0)
{
dst.Sliding = 0;
}
if (!contSample)
{
dst.CurrentSampleNum = dst.SampleNum;
dst.PosInSample = 0;
dst.VolumeAddon = 0;
dst.ToneDeviation = 0;
dst.BreakSample = false;
}
if (!contOrnament)
{
dst.CurrentOrnamentNum = dst.OrnamentNum;
dst.PosInOrnament = 0;
dst.NoteAddon = 0;
}
}
if (const uint_t* volume = src.GetVolume())
{
dst.Volume = *volume;
}
}
void GetNewChannelState(const Cell& src, ChannelState& dst, AYM::TrackBuilder& track)
{
if (const bool* enabled = src.GetEnabled())
{
if (*enabled)
{
dst.SampleIterator.Reset();
}
else
{
dst.SampleIterator.Disable();
}
dst.SampleNoiseAccumulator.Reset();
dst.VolumeSlide = 0;
dst.NoiseAccumulator.Reset();
dst.NoteAccumulator.Reset();
dst.OrnamentIterator.Reset();
dst.ToneAccumulator.Reset();
dst.EnvelopeAccumulator.Reset();
dst.ToneSlide.Reset();
}
if (const uint_t* note = src.GetNote())
{
dst.Note = *note + Transposition;
}
if (const uint_t* sample = src.GetSample())
{
dst.SampleIterator.Set(Data->Samples.Get(*sample));
}
if (const uint_t* ornament = src.GetOrnament())
{
dst.OrnamentIterator.Set(Data->Ornaments.Get(*ornament));
dst.OrnamentIterator.Reset();
dst.NoiseAccumulator.Reset();
dst.NoteAccumulator.Reset();
}
if (const uint_t* volume = src.GetVolume())
{
dst.Volume = *volume;
}
for (CommandsIterator it = src.GetCommands(); it; ++it)
{
switch (it->Type)
{
case ENVELOPE:
track.SetEnvelopeType(it->Param1);
dst.Envelope = it->Param2;
dst.EnvelopeEnabled = true;
break;
case ENVELOPE_OFF:
dst.EnvelopeEnabled = false;
break;
case NOISE:
dst.Noise = it->Param1;
break;
case SLIDE:
dst.ToneSlide.SetGlissade(it->Param1);
break;
case SLIDE_NOTE:
{
const int_t slide = track.GetSlidingDifference(it->Param2, dst.Note);
const int_t gliss = slide >= 0 ? -it->Param1 : it->Param1;
const int_t direction = slide >= 0 ? -1 : +1;
dst.ToneSlide.SetSlide(slide);
dst.ToneSlide.SetGlissade(gliss);
dst.ToneSlide.SetSlideDirection(direction);
dst.Note = it->Param2 + Transposition;
}
break;
}
}
}