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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: /* Details for each display screen - both Window and FullScreen */
1.1.1.5 root 29: typedef struct
30: {
1.1 root 31: int STScreenLeftSkipBytes,STScreenWidthBytes; /* Bytes to skip on left and number of bytes of screen to draw */
32: int STScreenStartHorizLine,STScreenEndHorizLine; /* Start/End points in ST screen(28 is top of normal screen) */
33: int PCStartHorizLine,PCStartXOffset; /* Source ST lines/bytes to skip, Destination screen lines/bytes to skip */
34: } SCREENDRAW_OVERSCAN;
35:
1.1.1.5 root 36: typedef struct
37: {
1.1 root 38: void *pDrawFunction; /* Draw function */
39: /*int DirectDrawMode;*/ /* Mode required for DirectDraw. eg MODE_320x200x256 */
40: int Width,Height,BitDepth,VertPixelsPerLine;
41: SCREENDRAW_OVERSCAN Overscan[4]; /* Details for starting offset for each overscan mode(none,top,bottom,both) */
42: } SCREENDRAW;
43:
1.1.1.5 root 44: typedef struct
45: {
1.1 root 46: SCREENDRAW *pLowRes, *pAltLowRes;
47: SCREENDRAW *pMediumRes, *pAltMediumRes;
48: SCREENDRAW *pHighRes, *pAltHighRes;
49: SCREENDRAW *pLowMediumMixRes, *pAltLowMediumMixRes;
50: } SCREENDRAW_DISPLAYOPTIONS;
51:
52: /* ST Resolution defines */
1.1.1.5 root 53: enum
54: {
1.1 root 55: ST_LOW_RES,
56: ST_MEDIUM_RES,
57: ST_HIGH_RES,
58: ST_LOWMEDIUM_MIX_RES
59: };
60:
61: /* Update Palette defines */
1.1.1.5 root 62: enum
63: {
1.1 root 64: UPDATE_PALETTE_NONE,
65: UPDATE_PALETTE_UPDATE,
66: UPDATE_PALETTE_FULLUPDATE
67: };
68:
69: /* Palette mask values for 'HBLPaletteMask[]' */
70: #define PALETTEMASK_RESOLUTION 0x00040000
1.1.1.2 root 71: #define PALETTEMASK_PALETTE 0x0000ffff
72: #define PALETTEMASK_UPDATERES 0x20000000
73: #define PALETTEMASK_UPDATEPAL 0x40000000
1.1 root 74: #define PALETTEMASK_UPDATEFULL 0x80000000
75: #define PALETTEMASK_UPDATEMASK (PALETTEMASK_UPDATEFULL|PALETTEMASK_UPDATEPAL|PALETTEMASK_UPDATERES)
76:
77: /* Overscan values */
1.1.1.5 root 78: enum
79: {
1.1.1.2 root 80: OVERSCANMODE_NONE, /* 0x00 */
81: OVERSCANMODE_TOP, /* 0x01 */
82: OVERSCANMODE_BOTTOM /* 0x02 (Top+Bottom) 0x03 */
1.1 root 83: };
84:
1.1.1.2 root 85: /* Available fullscreen modes */
86: #define NUM_DISPLAYMODEOPTIONS 6
1.1.1.5 root 87: enum
88: {
89: DISPLAYMODE_16COL_LOWRES, /* (fastest) */
90: DISPLAYMODE_16COL_HIGHRES,
91: DISPLAYMODE_16COL_FULL,
92: DISPLAYMODE_HICOL_LOWRES,
93: DISPLAYMODE_HICOL_HIGHRES,
94: DISPLAYMODE_HICOL_FULL /* (slowest) */
1.1.1.2 root 95: };
96:
97:
1.1 root 98: /* For palette we don't go from colour '0' as the whole background would change, so go from this value */
99: #define BASECOLOUR 0x0A
100: #define BASECOLOUR_LONG 0x0A0A0A0A
101:
102: extern SCREENDRAW ScreenDrawWindow[4];
103: extern SCREENDRAW ScreenDrawFullScreen[4];
104: extern FRAMEBUFFER *pFrameBuffer;
105: extern unsigned char *pSTScreen,*pSTScreenCopy;
106: extern unsigned char *pPCScreenDest;
107: extern int STScreenStartHorizLine,STScreenEndHorizLine;
108: extern int PCScreenBytesPerLine,STScreenWidthBytes,STScreenLeftSkipBytes;
109: extern BOOL bInFullScreen;
110: extern BOOL bFullScreenHold;
111: extern BOOL bScreenContentsChanged;
112: extern int STRes,PrevSTRes;
113: extern int STScreenLineOffset[NUM_VISIBLE_LINES];
114: extern unsigned long STRGBPalette[16];
115: extern unsigned long ST2RGB[2048];
1.1.1.3 root 116: extern SDL_Surface *sdlscrn;
1.1.1.4 root 117: extern BOOL bGrabMouse;
1.1 root 118:
119: extern void Screen_Init(void);
120: extern void Screen_UnInit(void);
121: extern void Screen_Reset(void);
122: extern void Screen_SetScreenLineOffsets(void);
123: extern void Screen_SetFullUpdate(void);
1.1.1.4 root 124: extern void Screen_SetupRGBTable(void);
1.1 root 125: extern void Screen_EnterFullScreen(void);
126: extern void Screen_ReturnFromFullScreen(void);
1.1.1.2 root 127: extern void Screen_ClearScreen(void);
1.1 root 128: extern void Screen_SetDrawModes(void);
1.1.1.6 ! root 129: extern void Screen_DidResolutionChange(void);
1.1.1.4 root 130: extern void Screen_Handle8BitPalettes(void);
1.1 root 131: extern void Screen_Blit(BOOL bSwapScreen);
132: extern void Screen_DrawFrame(BOOL bForceFlip);
133: extern void Screen_Draw(void);
1.1.1.3 root 134:
1.1.1.5 root 135: #endif /* ifndef HATARI_SCREEN_H */
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