244 lines
7.4 KiB
C
244 lines
7.4 KiB
C
/*
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* PicoDrive
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* (c) Copyright Dave, 2004
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* (C) notaz, 2006-2010
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*
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* This work is licensed under the terms of MAME license.
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* See COPYING file in the top-level directory.
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*/
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#ifndef PICO_H
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#define PICO_H
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#include <stdlib.h> // size_t
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#ifdef __cplusplus
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extern "C" {
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#endif
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// message log
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extern void lprintf(const char *fmt, ...);
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// this one should handle display mode changes
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extern void emu_video_mode_change(int start_line, int line_count, int is_32cols);
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// this must switch to 16bpp mode
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extern void emu_32x_startup(void);
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// optional 32X BIOS, should be left NULL if not used
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// must be 256, 2048, 1024 bytes
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extern const void *p32x_bios_g, *p32x_bios_m, *p32x_bios_s;
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// Pico.c
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#define POPT_EN_FM (1<< 0) // 00 000x
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#define POPT_EN_PSG (1<< 1)
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#define POPT_EN_Z80 (1<< 2)
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#define POPT_EN_STEREO (1<< 3)
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#define POPT_ALT_RENDERER (1<< 4) // 00 00x0
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// unused (1<< 5)
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// unused (1<< 6)
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#define POPT_ACC_SPRITES (1<< 7)
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#define POPT_DIS_32C_BORDER (1<< 8) // 00 0x00
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#define POPT_EXT_FM (1<< 9)
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#define POPT_EN_MCD_PCM (1<<10)
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#define POPT_EN_MCD_CDDA (1<<11)
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#define POPT_EN_MCD_GFX (1<<12) // 00 x000
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// unused (1<<13)
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#define POPT_EN_MCD_RAMCART (1<<15)
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#define POPT_DIS_VDP_FIFO (1<<16) // 0x 0000
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#define POPT_EN_DRC (1<<17)
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#define POPT_DIS_SPRITE_LIM (1<<18)
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#define POPT_DIS_IDLE_DET (1<<19)
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#define POPT_EN_32X (1<<20)
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#define POPT_EN_PWM (1<<21)
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extern int PicoOpt; // bitfield
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#define PAHW_MCD (1<<0)
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#define PAHW_32X (1<<1)
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#define PAHW_SVP (1<<2)
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#define PAHW_PICO (1<<3)
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#define PAHW_SMS (1<<4)
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extern int PicoAHW; // Pico active hw
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#define PQUIRK_FORCE_6BTN (1<<0)
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extern int PicoQuirks;
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extern int PicoSkipFrame; // skip rendering frame, but still do sound (if enabled) and emulation stuff
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extern int PicoRegionOverride; // override the region detection 0: auto, 1: Japan NTSC, 2: Japan PAL, 4: US, 8: Europe
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extern int PicoAutoRgnOrder; // packed priority list of regions, for example 0x148 means this detection order: EUR, USA, JAP
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extern int PicoSVPCycles;
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void PicoInit(void);
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void PicoPower(void);
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int PicoReset(void);
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void PicoLoopPrepare(void);
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void PicoFrame(void);
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void PicoFrameDrawOnly(void);
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extern int PicoPad[2]; // Joypads, format is MXYZ SACB RLDU
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extern void (*PicoWriteSound)(int bytes); // called once per frame at the best time to send sound buffer (PsndOut) to hardware
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typedef enum { PI_ROM, PI_ISPAL, PI_IS40_CELL, PI_IS240_LINES } pint_t;
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typedef union { int vint; void *vptr; } pint_ret_t;
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void PicoGetInternal(pint_t which, pint_ret_t *ret);
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extern void (*PicoInputCallback)(void);
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extern int PicoInputWasRead;
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// cd/mcd.c
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extern void (*PicoMCDopenTray)(void);
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extern void (*PicoMCDcloseTray)(void);
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// pico.c
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#define XPCM_BUFFER_SIZE (320+160)
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typedef struct
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{
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int pen_pos[2];
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int page;
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// internal
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int fifo_bytes; // bytes in FIFO
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int fifo_bytes_prev;
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int fifo_line_bytes; // float part, << 16
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int line_counter;
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unsigned short r1, r12;
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unsigned char xpcm_buffer[XPCM_BUFFER_SIZE+4];
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unsigned char *xpcm_ptr;
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} picohw_state;
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extern picohw_state PicoPicohw;
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// cd/cdd.c
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int cdd_load(const char *filename, int type);
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// Cart.c
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typedef enum
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{
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PMT_UNCOMPRESSED = 0,
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PMT_ZIP,
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PMT_CSO
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} pm_type;
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typedef struct
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{
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void *file; /* file handle */
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void *param; /* additional file related field */
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unsigned int size; /* size */
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pm_type type;
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char ext[4];
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} pm_file;
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pm_file *pm_open(const char *path);
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size_t pm_read(void *ptr, size_t bytes, pm_file *stream);
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int pm_seek(pm_file *stream, long offset, int whence);
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int pm_close(pm_file *fp);
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int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize,int is_sms);
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int PicoCartInsert(unsigned char *rom, unsigned int romsize, const char *carthw_cfg);
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extern void (*PicoCDLoadProgressCB)(const char *fname, int percent);
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extern int PicoGameLoaded;
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// Draw.c
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// for line-based renderer, set conversion
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// from internal 8 bit representation in 'HighCol' to:
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typedef enum
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{
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PDF_NONE = 0, // no conversion
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PDF_RGB555, // RGB/BGR output, depends on compile options
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PDF_8BIT, // 8-bit out (handles shadow/hilight mode, sonic water)
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} pdso_t;
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void PicoDrawSetOutFormat(pdso_t which, int use_32x_line_mode);
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void PicoDrawSetOutBuf(void *dest, int increment);
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void PicoDrawSetCallbacks(int (*begin)(unsigned int num), int (*end)(unsigned int num));
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extern void *DrawLineDest;
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extern unsigned char *HighCol;
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// utility
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#ifdef _ASM_DRAW_C
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void vidConvCpyRGB565(void *to, void *from, int pixels);
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#endif
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void PicoDoHighPal555(int sh);
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extern int PicoDrawMask;
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#define PDRAW_LAYERB_ON (1<<2)
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#define PDRAW_LAYERA_ON (1<<3)
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#define PDRAW_SPRITES_LOW_ON (1<<4)
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#define PDRAW_SPRITES_HI_ON (1<<7)
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#define PDRAW_32X_ON (1<<8)
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// internals
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#define PDRAW_SPRITES_MOVED (1<<0) // (asm)
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#define PDRAW_WND_DIFF_PRIO (1<<1) // not all window tiles use same priority
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#define PDRAW_SPR_LO_ON_HI (1<<2) // seen sprites without layer pri bit ontop spr. with that bit
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#define PDRAW_INTERLACE (1<<3)
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#define PDRAW_DIRTY_SPRITES (1<<4) // (asm)
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#define PDRAW_SONIC_MODE (1<<5) // mid-frame palette changes for 8bit renderer
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#define PDRAW_PLANE_HI_PRIO (1<<6) // have layer with all hi prio tiles (mk3)
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#define PDRAW_SHHI_DONE (1<<7) // layer sh/hi already processed
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#define PDRAW_32_COLS (1<<8) // 32 column mode
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extern int rendstatus, rendstatus_old;
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extern int rendlines;
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extern unsigned short HighPal[0x100];
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// draw.c
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void PicoDrawUpdateHighPal(void);
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void PicoDrawSetInternalBuf(void *dest, int line_increment);
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// draw2.c
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// stuff below is optional
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extern unsigned char *PicoDraw2FB; // buffer for fast renderer in format (8+320)x(8+224+8) (eights for borders)
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extern unsigned short *PicoCramHigh; // pointer to CRAM buff (0x40 shorts), converted to native device color (works only with 16bit for now)
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extern void (*PicoPrepareCram)(); // prepares PicoCramHigh for renderer to use
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// pico.c (32x)
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#ifndef NO_32X
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void Pico32xSetClocks(int msh2_hz, int ssh2_hz);
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#else
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#define Pico32xSetClocks(msh2_khz, ssh2_khz)
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#endif
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// normally 68k clock (7670442) * 3, in reality but much lower
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// because of high memory latencies
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#define PICO_MSH2_HZ ((int)(7670442.0 * 2.4))
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#define PICO_SSH2_HZ ((int)(7670442.0 * 2.4))
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// sound.c
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extern int PsndRate,PsndLen;
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extern short *PsndOut;
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extern void (*PsndMix_32_to_16l)(short *dest, int *src, int count);
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void PsndRerate(int preserve_state);
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// media.c
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enum media_type_e {
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PM_BAD_DETECT = -1,
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PM_ERROR = -2,
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PM_BAD_CD = -3,
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PM_BAD_CD_NO_BIOS = -4,
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PM_MD_CART = 1, /* also 32x */
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PM_MARK3,
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PM_CD,
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};
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enum cd_img_type
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{
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CIT_NOT_CD = 0,
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CIT_ISO,
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CIT_BIN,
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CIT_CUE
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};
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enum media_type_e PicoLoadMedia(const char *filename,
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const char *carthw_cfg_fname,
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const char *(*get_bios_filename)(int *region, const char *cd_fname),
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void (*do_region_override)(const char *media_filename), enum media_type_e media_type);
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int PicoCdCheck(const char *fname_in, int *pregion);
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extern unsigned char media_id_header[0x100];
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// memory.c
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enum input_device {
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PICO_INPUT_NOTHING,
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PICO_INPUT_PAD_3BTN,
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PICO_INPUT_PAD_6BTN,
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};
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void PicoSetInputDevice(int port, enum input_device device);
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#ifdef __cplusplus
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} // End of extern "C"
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#endif
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#endif // PICO_H
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