Pico.h 4.2 KB

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  1. // -------------------- Pico Library --------------------
  2. // Pico Library - Header File
  3. // (c) Copyright 2004 Dave, All rights reserved.
  4. // (c) Copyright 2006 notaz, All rights reserved.
  5. // Free for non-commercial use.
  6. // For commercial use, separate licencing terms must be obtained.
  7. #ifndef PICO_H
  8. #define PICO_H
  9. // port-specific compile-time settings
  10. #include <port_config.h>
  11. #ifdef __cplusplus
  12. extern "C" {
  13. #endif
  14. // external funcs for Sega/Mega CD
  15. int mp3_get_bitrate(FILE *f, int size);
  16. void mp3_start_play(FILE *f, int pos);
  17. int mp3_get_offset(void); // 0-1023
  18. void mp3_update(int *buffer, int length, int stereo);
  19. // Pico.c
  20. // PicoOpt bits LSb->MSb:
  21. // enable_ym2612&dac, enable_sn76496, enable_z80, stereo_sound,
  22. // alt_renderer, 6button_gamepad, accurate_timing, accurate_sprites,
  23. // draw_no_32col_border, external_ym2612, enable_pcm, enable cdda
  24. // enable_cdgfx, cd_perfect_sync
  25. extern int PicoOpt;
  26. extern int PicoVer;
  27. extern int PicoSkipFrame; // skip rendering frame, but still do sound (if enabled) and emulation stuff
  28. extern int PicoRegionOverride; // override the region detection 0: auto, 1: Japan NTSC, 2: Japan PAL, 4: US, 8: Europe
  29. extern int PicoAutoRgnOrder; // packed priority list of regions, for example 0x148 means this detection order: EUR, USA, JAP
  30. int PicoInit(void);
  31. void PicoExit(void);
  32. int PicoReset(int hard);
  33. int PicoFrame(void);
  34. extern int PicoPad[2]; // Joypads, format is MXYZ SACB RLDU
  35. extern int (*PicoCram)(int cram); // Callback to convert colour ram 0000bbb0 ggg0rrr0
  36. extern void (*PicoWriteSound)(int len); // called once per frame at the best time to send sound buffer (PsndOut) to hardware
  37. int PicoFrameMCD(void);
  38. // Area.c
  39. typedef size_t (arearw)(void *p, size_t _size, size_t _n, void *file);
  40. typedef size_t (areaeof)(void *file);
  41. typedef int (areaseek)(void *file, long offset, int whence);
  42. typedef int (areaclose)(void *file);
  43. // Save or load the state from PmovFile:
  44. int PmovState(int PmovAction, void *PmovFile); // &1=for reading &2=for writing &4=volatile &8=non-volatile
  45. extern arearw *areaRead; // external read and write function pointers for
  46. extern arearw *areaWrite; // gzip save state ability
  47. extern areaeof *areaEof;
  48. extern areaseek *areaSeek;
  49. extern areaclose *areaClose;
  50. extern void (*PicoStateProgressCB)(const char *str);
  51. // Cart.c
  52. typedef enum
  53. {
  54. PMT_UNCOMPRESSED = 0,
  55. PMT_ZIP
  56. } pm_type;
  57. typedef struct
  58. {
  59. void *file; /* file handle */
  60. void *param; /* additional file related field */
  61. unsigned int size; /* size */
  62. pm_type type;
  63. } pm_file;
  64. pm_file *pm_open(const char *path);
  65. size_t pm_read(void *ptr, size_t bytes, pm_file *stream);
  66. int pm_seek(pm_file *stream, long offset, int whence);
  67. int pm_close(pm_file *fp);
  68. int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize);
  69. int PicoCartInsert(unsigned char *rom,unsigned int romsize);
  70. void Byteswap(unsigned char *data,int len);
  71. // anotherguest
  72. int PicoUnloadCart(unsigned char* romdata);
  73. // Draw.c
  74. void PicoDrawSetColorFormat(int which); // 0=BGR444, 1=RGB555, 2=8bit(HighPal pal)
  75. extern void *DrawLineDest;
  76. extern int (*PicoScan)(unsigned int num, void *data);
  77. // internals
  78. extern unsigned short HighPal[0x100];
  79. extern int rendstatus;
  80. // utility
  81. #ifdef _ASM_DRAW_C
  82. void *blockcpy(void *dst, const void *src, size_t n);
  83. #else
  84. #define blockcpy memcpy
  85. #endif
  86. // Draw2.c
  87. // stuff below is optional
  88. extern unsigned short *PicoCramHigh; // pointer to CRAM buff (0x40 shorts), converted to native device color (works only with 16bit for now)
  89. extern void (*PicoPrepareCram)(); // prepares PicoCramHigh for renderer to use
  90. // sound.c
  91. extern int PsndRate,PsndLen;
  92. extern short *PsndOut;
  93. void sound_reset();
  94. void sound_rerate(int preserve_state);
  95. void z80_pack(unsigned char *data);
  96. void z80_unpack(unsigned char *data);
  97. void z80_reset();
  98. // Utils.c
  99. extern int PicuAnd;
  100. int PicuQuick(unsigned short *dest,unsigned short *src);
  101. int PicuShrink(unsigned short *dest,int destLen,unsigned short *src,int srcLen);
  102. int PicuShrinkReverse(unsigned short *dest,int destLen,unsigned short *src,int srcLen);
  103. int PicuMerge(unsigned short *dest,int destLen,unsigned short *src,int srcLen);
  104. #ifdef __cplusplus
  105. } // End of extern "C"
  106. #endif
  107. #endif // PICO_H