1 files changed, 85 insertions, 0 deletions
diff --git a/sid/sidplay-libs-2.1.0/resid/voice.h b/sid/sidplay-libs-2.1.0/resid/voice.h
new file mode 100644
index 00000000..77f8b443
--- /dev/null
+++ b/sid/sidplay-libs-2.1.0/resid/voice.h
@@ -0,0 +1,85 @@
+//  ---------------------------------------------------------------------------
+//  This file is part of reSID, a MOS6581 SID emulator engine.
+//  Copyright (C) 2002  Dag Lem <resid@nimrod.no>
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//  ---------------------------------------------------------------------------
+
+#ifndef __VOICE_H__
+#define __VOICE_H__
+
+#include "siddefs.h"
+#include "wave.h"
+#include "envelope.h"
+
+RESID_NAMESPACE_START
+
+class Voice
+{
+public:
+  Voice();
+
+  void set_chip_model(chip_model model);
+  void set_sync_source(Voice*);
+  void reset();
+  void mute(bool enable);
+
+  void writeCONTROL_REG(reg8);
+
+  // Amplitude modulated waveform output.
+  // Range [-2048*255, 2047*255].
+  RESID_INLINE sound_sample output();
+
+protected:
+  WaveformGenerator wave;
+  EnvelopeGenerator envelope;
+  bool muted;
+
+  // Waveform D/A and envelope multiplying D/A DC offsets.
+  sound_sample wave_DC;
+  sound_sample voice_DC;
+
+friend class SID;
+};
+
+
+// ----------------------------------------------------------------------------
+// Inline functions.
+// The following function is defined inline because it is called every
+// time a sample is calculated.
+// ----------------------------------------------------------------------------
+
+#if RESID_INLINING || defined(__VOICE_CC__)
+
+// ----------------------------------------------------------------------------
+// Amplitude modulated waveform output.
+// Ideal range [-2048*255, 2047*255].
+// ----------------------------------------------------------------------------
+RESID_INLINE
+sound_sample Voice::output()
+{
+  if (!muted)
+  { // Multiply oscillator output with envelope output.
+    return (wave.output() + wave_DC)*envelope.output() + voice_DC;
+  } else {
+    return 0;
+  }
+}
+
+#endif // RESID_INLINING || defined(__VOICE_CC__)
+
+RESID_NAMESPACE_STOP
+
+#endif // not __VOICE_H__