コード例 #1
0
ファイル: fasttracker.cpp プロジェクト: djdron/zxtune
    void SynthesizeChannel(ChannelState& dst, AYM::ChannelBuilder& channel, AYM::TrackBuilder& track)
    {
      const Ornament::Line& curOrnamentLine = *dst.OrnamentIterator.GetLine();
      const int_t noteAddon = dst.NoteAccumulator.Update(curOrnamentLine.NoteAddon, curOrnamentLine.KeepNoteAddon);
      const int_t noiseAddon = dst.NoiseAccumulator.Update(curOrnamentLine.NoiseAddon, curOrnamentLine.KeepNoiseAddon);
      dst.OrnamentIterator.Next();

      if (const Sample::Line* curSampleLine = dst.SampleIterator.GetLine())
      {
        //apply noise
        const int_t sampleNoiseAddon = dst.SampleNoiseAccumulator.Update(curSampleLine->Noise, curSampleLine->AccumulateNoise);
        if (curSampleLine->NoiseMask)
        {
          channel.DisableNoise();
        }
        else
        {
          track.SetNoise(dst.Noise + noiseAddon + sampleNoiseAddon);
        }
        //apply tone
        dst.ToneAddon = dst.ToneAccumulator.Update(curSampleLine->Tone, curSampleLine->AccumulateTone);
        if (curSampleLine->ToneMask)
        {
          channel.DisableTone();
        }
        //apply level
        dst.VolumeSlide += curSampleLine->VolSlide;
        const int_t volume = Math::Clamp<int_t>(curSampleLine->Level + dst.VolumeSlide, 0, 15);
        const uint_t level = ((dst.Volume * 17 + (dst.Volume > 7)) * volume + 128) / 256;
        channel.SetLevel(level);

        const uint_t envelope = dst.EnvelopeAccumulator.Update(curSampleLine->EnvelopeAddon, curSampleLine->AccumulateEnvelope);
        if (curSampleLine->EnableEnvelope && dst.EnvelopeEnabled)
        {
          channel.EnableEnvelope();
          track.SetEnvelopeTone(dst.Envelope - envelope);
        }

        dst.SampleIterator.Next();
      }
      else
      {
        channel.SetLevel(0);
        channel.DisableTone();
        channel.DisableNoise();
      }
      channel.SetTone(dst.Note + noteAddon, dst.ToneAddon + dst.ToneSlide.Update());
    }
コード例 #2
0
ファイル: asc_supp.cpp プロジェクト: fgroen/zxtune
    void SynthesizeChannel(ChannelState& dst, AYM::ChannelBuilder& channel, AYM::TrackBuilder& track)
    {
      if (!dst.Enabled)
      {
        channel.SetLevel(0);
        return;
      }

      const Sample& curSample = Data->Samples.Get(dst.CurrentSampleNum);
      const Sample::Line& curSampleLine = curSample.GetLine(dst.PosInSample);
      const Ornament& curOrnament = Data->Ornaments.Get(dst.CurrentOrnamentNum);
      const Ornament::Line& curOrnamentLine = curOrnament.GetLine(dst.PosInOrnament);

      //calculate volume addon
      if (dst.VolSlideCounter >= 2)
      {
        dst.VolSlideCounter--;
      }
      else if (dst.VolSlideCounter)
      {
        dst.VolumeAddon += dst.VolSlideAddon;
        dst.VolSlideCounter = dst.VolSlideDelay;
      }
      dst.VolumeAddon += curSampleLine.VolSlide;
      dst.VolumeAddon = Math::Clamp<int_t>(dst.VolumeAddon, -15, 15);

      //calculate tone
      dst.ToneDeviation += curSampleLine.ToneDeviation;
      dst.NoteAddon += curOrnamentLine.NoteAddon;
      const int_t halfTone = int_t(dst.Note) + dst.NoteAddon;
      const int_t toneAddon = dst.ToneDeviation + dst.Sliding / 16;
      //apply tone
      channel.SetTone(halfTone, toneAddon);

      //apply level
      channel.SetLevel((dst.Volume + 1) * Math::Clamp<int_t>(dst.VolumeAddon + curSampleLine.Level, 0, 15) / 16);
      //apply envelope
      if (dst.Envelope && curSampleLine.EnableEnvelope)
      {
        channel.EnableEnvelope();
      }

      //calculate noise
      dst.CurrentNoise += curOrnamentLine.NoiseAddon;

      //mixer
      if (curSampleLine.ToneMask)
      {
        channel.DisableTone();
      }
      if (curSampleLine.NoiseMask && curSampleLine.EnableEnvelope)
      {
        EnvelopeTone += curSampleLine.Adding;
        track.SetEnvelopeTone(EnvelopeTone);
      }
      else
      {
        dst.CurrentNoise += curSampleLine.Adding;
      }

      if (!curSampleLine.NoiseMask)
      {
        track.SetNoise((dst.CurrentNoise + dst.Sliding / 256) & 0x1f);
      }
      else
      {
        channel.DisableNoise();
      }

      //recalc positions
      if (dst.SlidingSteps != 0)
      {
        if (dst.SlidingSteps > 0)
        {
          if (!--dst.SlidingSteps &&
              LIMITER != dst.SlidingTargetNote) //finish slide to note
          {
            dst.Note = dst.SlidingTargetNote;
            dst.SlidingTargetNote = LIMITER;
            dst.Sliding = dst.Glissade = 0;
          }
        }
        dst.Sliding += dst.Glissade;
      }

      if (dst.PosInSample++ >= curSample.GetLoopLimit())
      {
        if (!dst.BreakSample)
        {
          dst.PosInSample = curSample.GetLoop();
        }
        else if (dst.PosInSample >= curSample.GetSize())
        {
          dst.Enabled = false;
        }
      }
      if (dst.PosInOrnament++ >= curOrnament.GetLoopLimit())
      {
        dst.PosInOrnament = curOrnament.GetLoop();
      }
    }
コード例 #3
0
ファイル: pt2_supp.cpp プロジェクト: fgroen/zxtune
    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();
      }
    }