scummvm/audio/softsynth/mt32/LA32Ramp.h
Colin Snover b8d70d26fa MT32: Update Munt to 2.0.1-pre
This update uses upstream commit
f88ef828a600ce66d1f730c8fb2a7f580f6f6165.

This update switches to use the new Munt C++ interface, which
will allow ScummVM to link to an external Munt library instead
of requiring it to be built-in in the future. For the moment,
the emulator is still built-in, since it is not available from
most package repositories.

The Munt driver in ScummVM now uses writeSysex instead of the
(now-private) playSysexWithoutFraming, per recommendation from
the Munt team <https://github.com/munt/munt/pull/30>.

This changeset also removes direct modifications that used to be
made to Munt code, to ease future updates. To update Munt code in
the future:

1. Replace all source files in the `softsynth/mt32` directory with
   new files from the upstream `mt32emu/src` directory;
2. Update `config.h` with the correct version number for the new
   version of Munt;
3. Update `module.mk` to add any new source files that need to be
   built.
2016-12-16 15:44:29 -06:00

46 lines
1.3 KiB
C++
Executable file

/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
* Copyright (C) 2011-2016 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MT32EMU_LA32RAMP_H
#define MT32EMU_LA32RAMP_H
#include "globals.h"
#include "Types.h"
namespace MT32Emu {
class LA32Ramp {
private:
Bit32u current;
unsigned int largeTarget;
unsigned int largeIncrement;
bool descending;
int interruptCountdown;
bool interruptRaised;
public:
LA32Ramp();
void startRamp(Bit8u target, Bit8u increment);
Bit32u nextValue();
bool checkInterrupt();
void reset();
};
} // namespace MT32Emu
#endif // #ifndef MT32EMU_LA32RAMP_H