furnace/src/engine/platform/dummy.h
2022-01-08 01:57:37 -05:00

27 lines
817 B
C++

#include "../dispatch.h"
// the dummy platform outputs saw waves.
// used when a DivDispatch for a system is not found.
class DivPlatformDummy: public DivDispatch {
struct Channel {
unsigned short freq, baseFreq;
short pitch;
unsigned short pos;
bool active, freqChanged;
unsigned char vol;
signed char amp;
Channel(): freq(0), baseFreq(0), pitch(0), pos(0), active(false), freqChanged(false), vol(0), amp(64) {}
};
Channel chan[128];
bool isMuted[128];
unsigned char chans;
public:
void acquire(short* bufL, short* bufR, size_t start, size_t len);
void muteChannel(int ch, bool mute);
int dispatch(DivCommand c);
void reset();
void tick();
int init(DivEngine* parent, int channels, int sugRate, bool pal);
void quit();
~DivPlatformDummy();
};