mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-12-25 18:51:49 +01:00
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
|
|
#ifndef _SYSTEM_H_
|
|
#define _SYSTEM_H_
|
|
|
|
typedef struct
|
|
{
|
|
uint8 *data; /* Bitmap data */
|
|
int width; /* Bitmap width (32+512+32) */
|
|
int height; /* Bitmap height (256) */
|
|
int depth; /* Color depth (8 bits) */
|
|
int pitch; /* Width of bitmap in bytes */
|
|
int granularity; /* Size of each pixel in bytes */
|
|
int remap; /* 1= Translate pixel data */
|
|
struct
|
|
{
|
|
int x; /* X offset of viewport within bitmap */
|
|
int y; /* Y offset of viewport within bitmap */
|
|
int w; /* Width of viewport */
|
|
int h; /* Height of viewport */
|
|
int ow; /* Previous width of viewport */
|
|
int oh; /* Previous height of viewport */
|
|
int changed; /* 1= Viewport width or height have changed */
|
|
} viewport;
|
|
} t_bitmap;
|
|
|
|
|
|
typedef struct
|
|
{
|
|
int sample_rate; /* Sample rate (8000-44100) */
|
|
int enabled; /* 1= sound emulation is enabled */
|
|
int buffer_size; /* Size of sound buffer (in bytes) */
|
|
int16 *buffer[2]; /* Signed 16-bit stereo sound data */
|
|
struct
|
|
{
|
|
int curStage;
|
|
int lastStage;
|
|
int *gens_buffer[2];
|
|
int16 *buffer[2];
|
|
} fm;
|
|
struct
|
|
{
|
|
int curStage;
|
|
int lastStage;
|
|
int16 *buffer;
|
|
} psg;
|
|
} t_snd;
|
|
|
|
/* Global variables */
|
|
extern t_bitmap bitmap;
|
|
extern t_snd snd;
|
|
extern uint8 initialized;
|
|
extern uint32 aim_m68k;
|
|
extern uint32 count_m68k;
|
|
extern uint32 dma_m68k;
|
|
extern uint32 aim_z80;
|
|
extern uint32 count_z80;
|
|
extern uint16 misc68Kcycles;
|
|
extern uint16 miscZ80cycles;
|
|
extern uint16 lines_per_frame;
|
|
extern double CPU_Clock;
|
|
|
|
/* Function prototypes */
|
|
void system_init (void);
|
|
void system_reset (void);
|
|
void system_shutdown (void);
|
|
int system_frame(int skip);
|
|
void m68k_run (int cyc);
|
|
void z80_run (int cyc);
|
|
void m68k_freeze(int cycles);
|
|
int audio_init (int rate);
|
|
void audio_update (void);
|
|
|
|
#endif /* _SYSTEM_H_ */
|
|
|