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