pico.h 7.9 KB

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  1. /*
  2. * PicoDrive
  3. * (c) Copyright Dave, 2004
  4. * (C) notaz, 2006-2010
  5. *
  6. * This work is licensed under the terms of MAME license.
  7. * See COPYING file in the top-level directory.
  8. */
  9. #ifndef PICO_H
  10. #define PICO_H
  11. #include <stdlib.h> // size_t
  12. // port-specific compile-time settings
  13. #include <port_config.h>
  14. #ifdef __cplusplus
  15. extern "C" {
  16. #endif
  17. // external funcs for Sega/Mega CD
  18. extern int mp3_get_bitrate(void *f, int size);
  19. extern void mp3_start_play(void *f, int pos);
  20. extern void mp3_update(int *buffer, int length, int stereo);
  21. // this function should write-back d-cache and invalidate i-cache
  22. // on a mem region [start_addr, end_addr)
  23. // used by dynarecs
  24. extern void cache_flush_d_inval_i(const void *start_addr, const void *end_addr);
  25. // attempt to alloc mem at specified address.
  26. // alloc anywhere else if that fails (callers should handle that)
  27. extern void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed);
  28. extern void *plat_mremap(void *ptr, size_t oldsize, size_t newsize);
  29. extern void plat_munmap(void *ptr, size_t size);
  30. // this one should handle display mode changes
  31. extern void emu_video_mode_change(int start_line, int line_count, int is_32cols);
  32. // this must switch to 16bpp mode
  33. extern void emu_32x_startup(void);
  34. // optional 32X BIOS, should be left NULL if not used
  35. // must be 256, 2048, 1024 bytes
  36. extern void *p32x_bios_g, *p32x_bios_m, *p32x_bios_s;
  37. // Pico.c
  38. #define POPT_EN_FM (1<< 0) // 00 000x
  39. #define POPT_EN_PSG (1<< 1)
  40. #define POPT_EN_Z80 (1<< 2)
  41. #define POPT_EN_STEREO (1<< 3)
  42. #define POPT_ALT_RENDERER (1<< 4) // 00 00x0
  43. #define POPT_6BTN_PAD (1<< 5)
  44. // unused (1<< 6)
  45. #define POPT_ACC_SPRITES (1<< 7)
  46. #define POPT_DIS_32C_BORDER (1<< 8) // 00 0x00
  47. #define POPT_EXT_FM (1<< 9)
  48. #define POPT_EN_MCD_PCM (1<<10)
  49. #define POPT_EN_MCD_CDDA (1<<11)
  50. #define POPT_EN_MCD_GFX (1<<12) // 00 x000
  51. #define POPT_EN_MCD_PSYNC (1<<13)
  52. #define POPT_EN_SOFTSCALE (1<<14)
  53. #define POPT_EN_MCD_RAMCART (1<<15)
  54. #define POPT_DIS_VDP_FIFO (1<<16) // 0x 0000
  55. #define POPT_EN_SVP_DRC (1<<17)
  56. #define POPT_DIS_SPRITE_LIM (1<<18)
  57. #define POPT_DIS_IDLE_DET (1<<19)
  58. #define POPT_EN_32X (1<<20)
  59. #define POPT_EN_PWM (1<<21)
  60. extern int PicoOpt; // bitfield
  61. #define PAHW_MCD (1<<0)
  62. #define PAHW_32X (1<<1)
  63. #define PAHW_SVP (1<<2)
  64. #define PAHW_PICO (1<<3)
  65. #define PAHW_SMS (1<<4)
  66. extern int PicoAHW; // Pico active hw
  67. extern int PicoSkipFrame; // skip rendering frame, but still do sound (if enabled) and emulation stuff
  68. extern int PicoRegionOverride; // override the region detection 0: auto, 1: Japan NTSC, 2: Japan PAL, 4: US, 8: Europe
  69. extern int PicoAutoRgnOrder; // packed priority list of regions, for example 0x148 means this detection order: EUR, USA, JAP
  70. extern int PicoSVPCycles;
  71. void PicoInit(void);
  72. void PicoExit(void);
  73. void PicoPower(void);
  74. int PicoReset(void);
  75. void PicoLoopPrepare(void);
  76. void PicoFrame(void);
  77. void PicoFrameDrawOnly(void);
  78. extern int PicoPad[2]; // Joypads, format is MXYZ SACB RLDU
  79. extern void (*PicoWriteSound)(int bytes); // called once per frame at the best time to send sound buffer (PsndOut) to hardware
  80. extern void (*PicoMessage)(const char *msg); // callback to output text message from emu
  81. typedef enum { PI_ROM, PI_ISPAL, PI_IS40_CELL, PI_IS240_LINES } pint_t;
  82. typedef union { int vint; void *vptr; } pint_ret_t;
  83. void PicoGetInternal(pint_t which, pint_ret_t *ret);
  84. // cd/Pico.c
  85. extern void (*PicoMCDopenTray)(void);
  86. extern void (*PicoMCDcloseTray)(void);
  87. extern int PicoCDBuffers;
  88. // pico.c
  89. #define XPCM_BUFFER_SIZE (320+160)
  90. typedef struct
  91. {
  92. int pen_pos[2];
  93. int page;
  94. // internal
  95. int fifo_bytes; // bytes in FIFO
  96. int fifo_bytes_prev;
  97. int fifo_line_bytes; // float part, << 16
  98. int line_counter;
  99. unsigned short r1, r12;
  100. unsigned char xpcm_buffer[XPCM_BUFFER_SIZE+4];
  101. unsigned char *xpcm_ptr;
  102. } picohw_state;
  103. extern picohw_state PicoPicohw;
  104. // area.c
  105. int PicoState(const char *fname, int is_save);
  106. int PicoStateLoadGfx(const char *fname);
  107. void *PicoTmpStateSave(void);
  108. void PicoTmpStateRestore(void *data);
  109. extern void (*PicoStateProgressCB)(const char *str);
  110. // cd/buffering.c
  111. void PicoCDBufferInit(void);
  112. void PicoCDBufferFree(void);
  113. void PicoCDBufferFlush(void);
  114. // cd/cd_sys.c
  115. int Insert_CD(const char *cdimg_name, int type);
  116. void Stop_CD(void); // releases all resources taken when CD game was started.
  117. // Cart.c
  118. typedef enum
  119. {
  120. PMT_UNCOMPRESSED = 0,
  121. PMT_ZIP,
  122. PMT_CSO
  123. } pm_type;
  124. typedef struct
  125. {
  126. void *file; /* file handle */
  127. void *param; /* additional file related field */
  128. unsigned int size; /* size */
  129. pm_type type;
  130. char ext[4];
  131. } pm_file;
  132. pm_file *pm_open(const char *path);
  133. size_t pm_read(void *ptr, size_t bytes, pm_file *stream);
  134. int pm_seek(pm_file *stream, long offset, int whence);
  135. int pm_close(pm_file *fp);
  136. int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize,int is_sms);
  137. int PicoCartInsert(unsigned char *rom, unsigned int romsize, const char *carthw_cfg);
  138. void PicoCartUnload(void);
  139. extern void (*PicoCartLoadProgressCB)(int percent);
  140. extern void (*PicoCDLoadProgressCB)(const char *fname, int percent);
  141. // Draw.c
  142. // for line-based renderer, set conversion
  143. // from internal 8 bit representation in 'HighCol' to:
  144. typedef enum
  145. {
  146. PDF_NONE = 0, // no conversion
  147. PDF_RGB555, // RGB/BGR output, depends on compile options
  148. PDF_8BIT, // 8-bit out (handles shadow/hilight mode, sonic water)
  149. } pdso_t;
  150. void PicoDrawSetOutFormat(pdso_t which, int allow_32x);
  151. void PicoDrawSetOutBuf(void *dest, int increment);
  152. void PicoDrawSetCallbacks(int (*begin)(unsigned int num), int (*end)(unsigned int num));
  153. extern void *DrawLineDest;
  154. extern unsigned char *HighCol;
  155. // utility
  156. #ifdef _ASM_DRAW_C
  157. void vidConvCpyRGB565(void *to, void *from, int pixels);
  158. #endif
  159. void PicoDoHighPal555(int sh);
  160. extern int PicoDrawMask;
  161. #define PDRAW_LAYERB_ON (1<<2)
  162. #define PDRAW_LAYERA_ON (1<<3)
  163. #define PDRAW_SPRITES_LOW_ON (1<<4)
  164. #define PDRAW_SPRITES_HI_ON (1<<7)
  165. #define PDRAW_32X_ON (1<<8)
  166. // internals
  167. #define PDRAW_SPRITES_MOVED (1<<0) // (asm)
  168. #define PDRAW_WND_DIFF_PRIO (1<<1) // not all window tiles use same priority
  169. #define PDRAW_SPR_LO_ON_HI (1<<2) // seen sprites without layer pri bit ontop spr. with that bit
  170. #define PDRAW_INTERLACE (1<<3)
  171. #define PDRAW_DIRTY_SPRITES (1<<4) // (asm)
  172. #define PDRAW_SONIC_MODE (1<<5) // mid-frame palette changes for 8bit renderer
  173. #define PDRAW_PLANE_HI_PRIO (1<<6) // have layer with all hi prio tiles (mk3)
  174. #define PDRAW_SHHI_DONE (1<<7) // layer sh/hi already processed
  175. #define PDRAW_32_COLS (1<<8) // 32 column mode
  176. extern int rendstatus, rendstatus_old;
  177. extern int rendlines;
  178. extern unsigned short HighPal[0x100];
  179. // draw.c
  180. void PicoDrawUpdateHighPal(void);
  181. void PicoDrawSetInternalBuf(void *dest, int line_increment);
  182. // draw2.c
  183. // stuff below is optional
  184. extern unsigned char *PicoDraw2FB; // buffer for fast renderer in format (8+320)x(8+224+8) (eights for borders)
  185. extern unsigned short *PicoCramHigh; // pointer to CRAM buff (0x40 shorts), converted to native device color (works only with 16bit for now)
  186. extern void (*PicoPrepareCram)(); // prepares PicoCramHigh for renderer to use
  187. // pico.c (32x)
  188. // multipliers against 68k clock
  189. extern int p32x_msh2_multiplier;
  190. extern int p32x_ssh2_multiplier;
  191. #define SH2_MULTI_SHIFT 10
  192. #define MSH2_MULTI_DEFAULT ((1 << SH2_MULTI_SHIFT) * 3 / 2)
  193. #define SSH2_MULTI_DEFAULT ((1 << SH2_MULTI_SHIFT) * 3 / 2)
  194. // 32x/draw.c
  195. void PicoDraw32xSetFrameMode(int is_on, int only_32x);
  196. // sound.c
  197. extern int PsndRate,PsndLen;
  198. extern short *PsndOut;
  199. extern void (*PsndMix_32_to_16l)(short *dest, int *src, int count);
  200. void PsndRerate(int preserve_state);
  201. #ifdef __cplusplus
  202. } // End of extern "C"
  203. #endif
  204. #endif // PICO_H