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- /*
- * PicoDrive
- * (c) Copyright Dave, 2004
- * (C) notaz, 2006-2010
- *
- * This work is licensed under the terms of MAME license.
- * See COPYING file in the top-level directory.
- */
- #ifndef PICO_H
- #define PICO_H
- #include <stdlib.h> // size_t
- // port-specific compile-time settings
- #include <port_config.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- // external funcs for Sega/Mega CD
- extern int mp3_get_bitrate(void *f, int size);
- extern void mp3_start_play(void *f, int pos);
- extern void mp3_update(int *buffer, int length, int stereo);
- // this function should write-back d-cache and invalidate i-cache
- // on a mem region [start_addr, end_addr)
- // used by dynarecs
- extern void cache_flush_d_inval_i(const void *start_addr, const void *end_addr);
- // attempt to alloc mem at specified address.
- // alloc anywhere else if that fails (callers should handle that)
- extern void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed);
- extern void *plat_mremap(void *ptr, size_t oldsize, size_t newsize);
- extern void plat_munmap(void *ptr, size_t size);
- // this one should handle display mode changes
- extern void emu_video_mode_change(int start_line, int line_count, int is_32cols);
- // this must switch to 16bpp mode
- extern void emu_32x_startup(void);
- // optional 32X BIOS, should be left NULL if not used
- // must be 256, 2048, 1024 bytes
- extern void *p32x_bios_g, *p32x_bios_m, *p32x_bios_s;
- // Pico.c
- #define POPT_EN_FM (1<< 0) // 00 000x
- #define POPT_EN_PSG (1<< 1)
- #define POPT_EN_Z80 (1<< 2)
- #define POPT_EN_STEREO (1<< 3)
- #define POPT_ALT_RENDERER (1<< 4) // 00 00x0
- #define POPT_6BTN_PAD (1<< 5)
- // unused (1<< 6)
- #define POPT_ACC_SPRITES (1<< 7)
- #define POPT_DIS_32C_BORDER (1<< 8) // 00 0x00
- #define POPT_EXT_FM (1<< 9)
- #define POPT_EN_MCD_PCM (1<<10)
- #define POPT_EN_MCD_CDDA (1<<11)
- #define POPT_EN_MCD_GFX (1<<12) // 00 x000
- #define POPT_EN_MCD_PSYNC (1<<13)
- #define POPT_EN_SOFTSCALE (1<<14)
- #define POPT_EN_MCD_RAMCART (1<<15)
- #define POPT_DIS_VDP_FIFO (1<<16) // 0x 0000
- #define POPT_EN_SVP_DRC (1<<17)
- #define POPT_DIS_SPRITE_LIM (1<<18)
- #define POPT_DIS_IDLE_DET (1<<19)
- #define POPT_EN_32X (1<<20)
- #define POPT_EN_PWM (1<<21)
- extern int PicoOpt; // bitfield
- #define PAHW_MCD (1<<0)
- #define PAHW_32X (1<<1)
- #define PAHW_SVP (1<<2)
- #define PAHW_PICO (1<<3)
- #define PAHW_SMS (1<<4)
- extern int PicoAHW; // Pico active hw
- extern int PicoSkipFrame; // skip rendering frame, but still do sound (if enabled) and emulation stuff
- extern int PicoRegionOverride; // override the region detection 0: auto, 1: Japan NTSC, 2: Japan PAL, 4: US, 8: Europe
- extern int PicoAutoRgnOrder; // packed priority list of regions, for example 0x148 means this detection order: EUR, USA, JAP
- extern int PicoSVPCycles;
- void PicoInit(void);
- void PicoExit(void);
- void PicoPower(void);
- int PicoReset(void);
- void PicoLoopPrepare(void);
- void PicoFrame(void);
- void PicoFrameDrawOnly(void);
- extern int PicoPad[2]; // Joypads, format is MXYZ SACB RLDU
- extern void (*PicoWriteSound)(int bytes); // called once per frame at the best time to send sound buffer (PsndOut) to hardware
- extern void (*PicoMessage)(const char *msg); // callback to output text message from emu
- typedef enum { PI_ROM, PI_ISPAL, PI_IS40_CELL, PI_IS240_LINES } pint_t;
- typedef union { int vint; void *vptr; } pint_ret_t;
- void PicoGetInternal(pint_t which, pint_ret_t *ret);
- // cd/Pico.c
- extern void (*PicoMCDopenTray)(void);
- extern void (*PicoMCDcloseTray)(void);
- extern int PicoCDBuffers;
- // pico.c
- #define XPCM_BUFFER_SIZE (320+160)
- typedef struct
- {
- int pen_pos[2];
- int page;
- // internal
- int fifo_bytes; // bytes in FIFO
- int fifo_bytes_prev;
- int fifo_line_bytes; // float part, << 16
- int line_counter;
- unsigned short r1, r12;
- unsigned char xpcm_buffer[XPCM_BUFFER_SIZE+4];
- unsigned char *xpcm_ptr;
- } picohw_state;
- extern picohw_state PicoPicohw;
- // area.c
- int PicoState(const char *fname, int is_save);
- int PicoStateLoadGfx(const char *fname);
- void *PicoTmpStateSave(void);
- void PicoTmpStateRestore(void *data);
- extern void (*PicoStateProgressCB)(const char *str);
- // cd/buffering.c
- void PicoCDBufferInit(void);
- void PicoCDBufferFree(void);
- void PicoCDBufferFlush(void);
- // cd/cd_sys.c
- int Insert_CD(const char *cdimg_name, int type);
- void Stop_CD(void); // releases all resources taken when CD game was started.
- // Cart.c
- typedef enum
- {
- PMT_UNCOMPRESSED = 0,
- PMT_ZIP,
- PMT_CSO
- } pm_type;
- typedef struct
- {
- void *file; /* file handle */
- void *param; /* additional file related field */
- unsigned int size; /* size */
- pm_type type;
- char ext[4];
- } pm_file;
- pm_file *pm_open(const char *path);
- size_t pm_read(void *ptr, size_t bytes, pm_file *stream);
- int pm_seek(pm_file *stream, long offset, int whence);
- int pm_close(pm_file *fp);
- int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize,int is_sms);
- int PicoCartInsert(unsigned char *rom, unsigned int romsize, const char *carthw_cfg);
- void PicoCartUnload(void);
- extern void (*PicoCartLoadProgressCB)(int percent);
- extern void (*PicoCDLoadProgressCB)(const char *fname, int percent);
- // Draw.c
- // for line-based renderer, set conversion
- // from internal 8 bit representation in 'HighCol' to:
- typedef enum
- {
- PDF_NONE = 0, // no conversion
- PDF_RGB555, // RGB/BGR output, depends on compile options
- PDF_8BIT, // 8-bit out (handles shadow/hilight mode, sonic water)
- } pdso_t;
- void PicoDrawSetOutFormat(pdso_t which, int allow_32x);
- void PicoDrawSetOutBuf(void *dest, int increment);
- void PicoDrawSetCallbacks(int (*begin)(unsigned int num), int (*end)(unsigned int num));
- extern void *DrawLineDest;
- extern unsigned char *HighCol;
- // utility
- #ifdef _ASM_DRAW_C
- void vidConvCpyRGB565(void *to, void *from, int pixels);
- #endif
- void PicoDoHighPal555(int sh);
- extern int PicoDrawMask;
- #define PDRAW_LAYERB_ON (1<<2)
- #define PDRAW_LAYERA_ON (1<<3)
- #define PDRAW_SPRITES_LOW_ON (1<<4)
- #define PDRAW_SPRITES_HI_ON (1<<7)
- #define PDRAW_32X_ON (1<<8)
- // internals
- #define PDRAW_SPRITES_MOVED (1<<0) // (asm)
- #define PDRAW_WND_DIFF_PRIO (1<<1) // not all window tiles use same priority
- #define PDRAW_SPR_LO_ON_HI (1<<2) // seen sprites without layer pri bit ontop spr. with that bit
- #define PDRAW_INTERLACE (1<<3)
- #define PDRAW_DIRTY_SPRITES (1<<4) // (asm)
- #define PDRAW_SONIC_MODE (1<<5) // mid-frame palette changes for 8bit renderer
- #define PDRAW_PLANE_HI_PRIO (1<<6) // have layer with all hi prio tiles (mk3)
- #define PDRAW_SHHI_DONE (1<<7) // layer sh/hi already processed
- #define PDRAW_32_COLS (1<<8) // 32 column mode
- extern int rendstatus, rendstatus_old;
- extern int rendlines;
- extern unsigned short HighPal[0x100];
- // draw.c
- void PicoDrawUpdateHighPal(void);
- void PicoDrawSetInternalBuf(void *dest, int line_increment);
- // draw2.c
- // stuff below is optional
- extern unsigned char *PicoDraw2FB; // buffer for fast renderer in format (8+320)x(8+224+8) (eights for borders)
- extern unsigned short *PicoCramHigh; // pointer to CRAM buff (0x40 shorts), converted to native device color (works only with 16bit for now)
- extern void (*PicoPrepareCram)(); // prepares PicoCramHigh for renderer to use
- // pico.c (32x)
- // multipliers against 68k clock
- extern int p32x_msh2_multiplier;
- extern int p32x_ssh2_multiplier;
- #define SH2_MULTI_SHIFT 10
- #define MSH2_MULTI_DEFAULT ((1 << SH2_MULTI_SHIFT) * 3 / 2)
- #define SSH2_MULTI_DEFAULT ((1 << SH2_MULTI_SHIFT) * 3 / 2)
- // 32x/draw.c
- void PicoDraw32xSetFrameMode(int is_on, int only_32x);
- // sound.c
- extern int PsndRate,PsndLen;
- extern short *PsndOut;
- extern void (*PsndMix_32_to_16l)(short *dest, int *src, int count);
- void PsndRerate(int preserve_state);
- #ifdef __cplusplus
- } // End of extern "C"
- #endif
- #endif // PICO_H
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