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https://github.com/RaySollium99/picodrive.git
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a9b3ffd3cc
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@224 be3aeb3a-fb24-0410-a615-afba39da0efa
136 lines
4.5 KiB
C
136 lines
4.5 KiB
C
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// -------------------- Pico Library --------------------
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// Pico Library - Header File
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// (c) Copyright 2004 Dave, All rights reserved.
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// (c) Copyright 2006-2007 notaz, All rights reserved.
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// Free for non-commercial use.
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// For commercial use, separate licencing terms must be obtained.
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#ifndef PICO_H
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#define PICO_H
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// port-specific compile-time settings
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#include <port_config.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// external funcs for Sega/Mega CD
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int mp3_get_bitrate(FILE *f, int size);
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void mp3_start_play(FILE *f, int pos);
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int mp3_get_offset(void); // 0-1023
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void mp3_update(int *buffer, int length, int stereo);
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// Pico.c
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// PicoOpt bits LSb->MSb:
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// enable_ym2612&dac, enable_sn76496, enable_z80, stereo_sound,
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// alt_renderer, 6button_gamepad, accurate_timing, accurate_sprites,
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// draw_no_32col_border, external_ym2612, enable_cd_pcm, enable_cd_cdda
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// enable_cd_gfx, cd_perfect_sync, soft_32col_scaling, enable_cd_ramcart
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extern int PicoOpt;
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extern int PicoVer;
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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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int PicoInit(void);
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void PicoExit(void);
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int PicoReset(int hard);
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int PicoFrame(void);
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extern int PicoPad[2]; // Joypads, format is MXYZ SACB RLDU
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extern void (*PicoWriteSound)(int len); // called once per frame at the best time to send sound buffer (PsndOut) to hardware
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extern void (*PicoMessage)(const char *msg); // callback to output text message from emu
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// cd/Pico.c
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int PicoFrameMCD(void);
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extern void (*PicoMCDopenTray)(void);
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extern int (*PicoMCDcloseTray)(void);
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extern int PicoCDBuffers;
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// Area.c
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typedef size_t (arearw)(void *p, size_t _size, size_t _n, void *file);
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typedef size_t (areaeof)(void *file);
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typedef int (areaseek)(void *file, long offset, int whence);
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typedef int (areaclose)(void *file);
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// Save or load the state from PmovFile:
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int PmovState(int PmovAction, void *PmovFile); // &1=for reading &2=for writing &4=volatile &8=non-volatile
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extern arearw *areaRead; // external read and write function pointers for
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extern arearw *areaWrite; // gzip save state ability
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extern areaeof *areaEof;
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extern areaseek *areaSeek;
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extern areaclose *areaClose;
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extern void (*PicoStateProgressCB)(const char *str);
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// cd/buffering.c
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void PicoCDBufferInit(void);
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void PicoCDBufferFree(void);
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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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} 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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} 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);
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int PicoCartInsert(unsigned char *rom,unsigned int romsize);
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void Byteswap(unsigned char *data,int len);
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// anotherguest
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int PicoUnloadCart(unsigned char* romdata);
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extern void (*PicoCartLoadProgressCB)(int percent);
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// Draw.c
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void PicoDrawSetColorFormat(int which); // 0=BGR444, 1=RGB555, 2=8bit(HighPal pal)
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extern void *DrawLineDest;
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extern int (*PicoScan)(unsigned int num, void *data);
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// internals
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extern unsigned short HighPal[0x100];
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extern int rendstatus;
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// utility
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#ifdef _ASM_DRAW_C
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void *blockcpy(void *dst, const void *src, size_t n);
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#else
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#define blockcpy memcpy
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#endif
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// Draw2.c
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// stuff below is optional
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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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// sound.c
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extern int PsndRate,PsndLen;
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extern short *PsndOut;
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void sound_reset();
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void sound_rerate(int preserve_state);
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void z80_pack(unsigned char *data);
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void z80_unpack(unsigned char *data);
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void z80_reset();
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// Utils.c
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extern int PicuAnd;
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int PicuQuick(unsigned short *dest,unsigned short *src);
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int PicuShrink(unsigned short *dest,int destLen,unsigned short *src,int srcLen);
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int PicuShrinkReverse(unsigned short *dest,int destLen,unsigned short *src,int srcLen);
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int PicuMerge(unsigned short *dest,int destLen,unsigned short *src,int srcLen);
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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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