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arcade: add ymfm-based core

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less CPU usage at the cost of some quality
This commit is contained in:
tildearrow 2021-12-15 01:23:58 -05:00
parent 8de60fe2a6
commit 2879b5e4d0
21 changed files with 964 additions and 10 deletions
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15
src/engine/platform/arcade.h
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@ -3,6 +3,11 @@
#include "../dispatch.h"
#include <queue>
#include "../../../extern/opm/opm.h"
#include "sound/ymfm/ymfm_opm.h"
class DivArcadeInterface: public ymfm::ymfm_interface {
};
class DivPlatformArcade: public DivDispatch {
protected:
@ -38,13 +43,20 @@ class DivPlatformArcade: public DivDispatch {
unsigned char sampleBank;
unsigned char lastBusy;
bool extMode;
ymfm::ym2151* fm_ymfm;
ymfm::ym2151::output_data out_ymfm;
DivArcadeInterface iface;
bool extMode, useYMFM;
short oldWrites[256];
short pendingWrites[256];
int octave(int freq);
int toFreq(int freq);
void acquire_nuked(short* bufL, short* bufR, size_t start, size_t len);
void acquire_ymfm(short* bufL, short* bufR, size_t start, size_t len);
public:
void acquire(short* bufL, short* bufR, size_t start, size_t len);
@ -52,6 +64,7 @@ class DivPlatformArcade: public DivDispatch {
void reset();
void tick();
bool isStereo();
void setYMFM(bool use);
int init(DivEngine* parent, int channels, int sugRate, bool pal);
void quit();
~DivPlatformArcade();