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Up to [HATARI the Atari ST Emulator] / hatari / src / includes|
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1.1 root 1: /*
2: Hatari
3: */
4:
1.1.1.3 ! root 5: #ifndef SCREEN_H
! 6: #define SCREEN_H
! 7:
! 8: #include <SDL_video.h> /* for SDL_Surface */
! 9:
1.1 root 10:
11: /* Frame buffer, used to store details in screen conversion */
12: typedef struct {
13: unsigned short int HBLPalettes[(NUM_VISIBLE_LINES+1)*16]; /* 1x16 colour palette per screen line, +1 line as may write after line 200 */
14: unsigned long HBLPaletteMasks[NUM_VISIBLE_LINES+1]; /* Bit mask of palette colours changes, top bit set is resolution change */
15: unsigned char *pSTScreen; /* Copy of screen built up during frame(copy each line on HBL to simulate monitor raster) */
16: unsigned char *pSTScreenCopy; /* Previous frames copy of above */
17: int OverscanModeCopy; /* Previous screen overscan mode */
18: BOOL bFullUpdate; /* Set TRUE to cause full update on next draw */
19: } FRAMEBUFFER;
20: #define NUM_FRAMEBUFFERS 2
21:
22: /* Details for each display screen - both Window and FullScreen */
23: typedef struct {
24: int STScreenLeftSkipBytes,STScreenWidthBytes; /* Bytes to skip on left and number of bytes of screen to draw */
25: int STScreenStartHorizLine,STScreenEndHorizLine; /* Start/End points in ST screen(28 is top of normal screen) */
26: int PCStartHorizLine,PCStartXOffset; /* Source ST lines/bytes to skip, Destination screen lines/bytes to skip */
27: } SCREENDRAW_OVERSCAN;
28:
29: typedef struct {
30: void *pDrawFunction; /* Draw function */
31: /*int DirectDrawMode;*/ /* Mode required for DirectDraw. eg MODE_320x200x256 */
32: int Width,Height,BitDepth,VertPixelsPerLine;
33: SCREENDRAW_OVERSCAN Overscan[4]; /* Details for starting offset for each overscan mode(none,top,bottom,both) */
34: } SCREENDRAW;
35:
36: typedef struct {
37: SCREENDRAW *pLowRes, *pAltLowRes;
38: SCREENDRAW *pMediumRes, *pAltMediumRes;
39: SCREENDRAW *pHighRes, *pAltHighRes;
40: SCREENDRAW *pLowMediumMixRes, *pAltLowMediumMixRes;
41: } SCREENDRAW_DISPLAYOPTIONS;
42:
43: /* ST Resolution defines */
44: enum {
45: ST_LOW_RES,
46: ST_MEDIUM_RES,
47: ST_HIGH_RES,
48: ST_LOWMEDIUM_MIX_RES
49: };
50:
51: /* Update Palette defines */
52: enum {
53: UPDATE_PALETTE_NONE,
54: UPDATE_PALETTE_UPDATE,
55: UPDATE_PALETTE_FULLUPDATE
56: };
57:
58: /* Palette mask values for 'HBLPaletteMask[]' */
59: #define PALETTEMASK_RESOLUTION 0x00040000
1.1.1.2 root 60: #define PALETTEMASK_PALETTE 0x0000ffff
61: #define PALETTEMASK_UPDATERES 0x20000000
62: #define PALETTEMASK_UPDATEPAL 0x40000000
1.1 root 63: #define PALETTEMASK_UPDATEFULL 0x80000000
64: #define PALETTEMASK_UPDATEMASK (PALETTEMASK_UPDATEFULL|PALETTEMASK_UPDATEPAL|PALETTEMASK_UPDATERES)
65:
66: /* Overscan values */
67: enum {
1.1.1.2 root 68: OVERSCANMODE_NONE, /* 0x00 */
69: OVERSCANMODE_TOP, /* 0x01 */
70: OVERSCANMODE_BOTTOM /* 0x02 (Top+Bottom) 0x03 */
1.1 root 71: };
72:
1.1.1.2 root 73: /* Available fullscreen modes */
74: #define NUM_DISPLAYMODEOPTIONS 6
75: enum {
76: DISPLAYMODE_16COL_LOWRES, /* (fastest) */
77: DISPLAYMODE_16COL_HIGHRES,
78: DISPLAYMODE_16COL_FULL,
79: DISPLAYMODE_HICOL_LOWRES,
80: DISPLAYMODE_HICOL_HIGHRES,
81: DISPLAYMODE_HICOL_FULL /* (slowest) */
82: };
83:
84:
1.1 root 85: /* For palette we don't go from colour '0' as the whole background would change, so go from this value */
86: #define BASECOLOUR 0x0A
87: #define BASECOLOUR_LONG 0x0A0A0A0A
88:
89: extern SCREENDRAW ScreenDrawWindow[4];
90: extern SCREENDRAW ScreenDrawFullScreen[4];
91: extern FRAMEBUFFER *pFrameBuffer;
92: extern unsigned char *pScreenBitmap;
93: extern unsigned char *pSTScreen,*pSTScreenCopy;
94: extern unsigned char *pPCScreenDest;
95: extern int STScreenStartHorizLine,STScreenEndHorizLine;
96: extern int PCScreenBytesPerLine,STScreenWidthBytes,STScreenLeftSkipBytes;
97: extern BOOL bInFullScreen;
98: extern BOOL bFullScreenHold;
99: extern BOOL bScreenContentsChanged;
100: extern int STRes,PrevSTRes;
101: extern int STScreenLineOffset[NUM_VISIBLE_LINES];
102: extern unsigned long STRGBPalette[16];
103: extern unsigned long ST2RGB[2048];
1.1.1.3 ! root 104: extern SDL_Surface *sdlscrn;
1.1 root 105:
106: extern void Screen_Init(void);
107: extern void Screen_UnInit(void);
108: extern void Screen_Reset(void);
109: extern void Screen_SetScreenLineOffsets(void);
110: extern void Screen_SetFullUpdate(void);
111: extern void Screen_SetupRGBTable(BOOL bFullScreen);
112: extern void Screen_EnterFullScreen(void);
113: extern void Screen_ReturnFromFullScreen(void);
1.1.1.2 root 114: extern void Screen_ClearScreen(void);
1.1 root 115: extern void Screen_SetDrawModes(void);
1.1.1.2 root 116: extern void Screen_SetWindowRes(int Width,int Height,int BitCount);
1.1 root 117: extern void Screen_Blit(BOOL bSwapScreen);
118: extern FRAMEBUFFER *Screen_GetOtherFrameBuffer(void);
119: extern void Screen_DrawFrame(BOOL bForceFlip);
120: extern void Screen_Draw(void);
1.1.1.3 ! root 121:
! 122: #endif /* ifndef SCREEN_H */
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