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1.1 root 1: /*
1.1.1.5 root 2: Hatari - screen.h
3:
4: This file is distributed under the GNU Public License, version 2 or at your
5: option any later version. Read the file gpl.txt for details.
1.1 root 6: */
7:
1.1.1.5 root 8: #ifndef HATARI_SCREEN_H
9: #define HATARI_SCREEN_H
1.1.1.3 root 10:
11: #include <SDL_video.h> /* for SDL_Surface */
12:
1.1 root 13:
14: /* Frame buffer, used to store details in screen conversion */
1.1.1.5 root 15: typedef struct
16: {
1.1 root 17: unsigned short int HBLPalettes[(NUM_VISIBLE_LINES+1)*16]; /* 1x16 colour palette per screen line, +1 line as may write after line 200 */
18: unsigned long HBLPaletteMasks[NUM_VISIBLE_LINES+1]; /* Bit mask of palette colours changes, top bit set is resolution change */
19: unsigned char *pSTScreen; /* Copy of screen built up during frame(copy each line on HBL to simulate monitor raster) */
20: unsigned char *pSTScreenCopy; /* Previous frames copy of above */
21: int OverscanModeCopy; /* Previous screen overscan mode */
22: BOOL bFullUpdate; /* Set TRUE to cause full update on next draw */
23: } FRAMEBUFFER;
1.1.1.5 root 24:
1.1.1.6 root 25: /* Number of frame buffers (1 or 2) - should be 2 for supporting screen flipping */
26: #define NUM_FRAMEBUFFERS 2
1.1 root 27:
28:
29: /* ST Resolution defines */
1.1.1.5 root 30: enum
31: {
1.1 root 32: ST_LOW_RES,
33: ST_MEDIUM_RES,
34: ST_HIGH_RES,
35: ST_LOWMEDIUM_MIX_RES
36: };
37:
38: /* Update Palette defines */
1.1.1.5 root 39: enum
40: {
1.1 root 41: UPDATE_PALETTE_NONE,
42: UPDATE_PALETTE_UPDATE,
43: UPDATE_PALETTE_FULLUPDATE
44: };
45:
46: /* Palette mask values for 'HBLPaletteMask[]' */
47: #define PALETTEMASK_RESOLUTION 0x00040000
1.1.1.2 root 48: #define PALETTEMASK_PALETTE 0x0000ffff
49: #define PALETTEMASK_UPDATERES 0x20000000
50: #define PALETTEMASK_UPDATEPAL 0x40000000
1.1 root 51: #define PALETTEMASK_UPDATEFULL 0x80000000
52: #define PALETTEMASK_UPDATEMASK (PALETTEMASK_UPDATEFULL|PALETTEMASK_UPDATEPAL|PALETTEMASK_UPDATERES)
53:
54: /* Overscan values */
1.1.1.5 root 55: enum
56: {
1.1.1.2 root 57: OVERSCANMODE_NONE, /* 0x00 */
58: OVERSCANMODE_TOP, /* 0x01 */
59: OVERSCANMODE_BOTTOM /* 0x02 (Top+Bottom) 0x03 */
1.1 root 60: };
61:
1.1.1.2 root 62: /* Available fullscreen modes */
63: #define NUM_DISPLAYMODEOPTIONS 6
1.1.1.5 root 64: enum
65: {
1.1.1.7 root 66: DISPLAYMODE_LOWCOL_LOWRES, /* low color, low resolution (fastest) */
67: DISPLAYMODE_LOWCOL_HIGHRES, /* low color, zoomed resolution */
68: DISPLAYMODE_LOWCOL_DUMMY, /* unused */
69: DISPLAYMODE_HICOL_LOWRES, /* high color, low resolution */
70: DISPLAYMODE_HICOL_HIGHRES, /* high color, zoomed resolution (slowest) */
71: DISPLAYMODE_HICOL_DUMMY /* unused */
1.1.1.2 root 72: };
73:
74:
1.1 root 75: /* For palette we don't go from colour '0' as the whole background would change, so go from this value */
76: #define BASECOLOUR 0x0A
77: #define BASECOLOUR_LONG 0x0A0A0A0A
78:
79: extern FRAMEBUFFER *pFrameBuffer;
80: extern unsigned char *pSTScreen,*pSTScreenCopy;
81: extern unsigned char *pPCScreenDest;
82: extern int STScreenStartHorizLine,STScreenEndHorizLine;
83: extern int PCScreenBytesPerLine,STScreenWidthBytes,STScreenLeftSkipBytes;
84: extern BOOL bInFullScreen;
85: extern BOOL bScreenContentsChanged;
86: extern int STRes,PrevSTRes;
87: extern int STScreenLineOffset[NUM_VISIBLE_LINES];
88: extern unsigned long STRGBPalette[16];
89: extern unsigned long ST2RGB[2048];
1.1.1.3 root 90: extern SDL_Surface *sdlscrn;
1.1.1.4 root 91: extern BOOL bGrabMouse;
1.1 root 92:
93: extern void Screen_Init(void);
94: extern void Screen_UnInit(void);
95: extern void Screen_Reset(void);
96: extern void Screen_SetScreenLineOffsets(void);
97: extern void Screen_SetFullUpdate(void);
98: extern void Screen_EnterFullScreen(void);
99: extern void Screen_ReturnFromFullScreen(void);
1.1.1.2 root 100: extern void Screen_ClearScreen(void);
1.1.1.6 root 101: extern void Screen_DidResolutionChange(void);
1.1 root 102: extern void Screen_Blit(BOOL bSwapScreen);
103: extern void Screen_DrawFrame(BOOL bForceFlip);
104: extern void Screen_Draw(void);
1.1.1.3 root 105:
1.1.1.5 root 106: #endif /* ifndef HATARI_SCREEN_H */
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