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165 lines
4.8 KiB
C
165 lines
4.8 KiB
C
/*
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* video.h - Video/graphics emulation
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*
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* SheepShaver (C) 1997-2008 Marc Hellwig and Christian Bauer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef VIDEO_H
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#define VIDEO_H
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extern bool VideoActivated(void);
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extern bool VideoSnapshot(int xsize, int ysize, uint8 *p);
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extern int16 VideoDoDriverIO(uint32 spaceID, uint32 commandID, uint32 commandContents, uint32 commandCode, uint32 commandKind);
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// System specific and internal functions/data
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struct VideoInfo {
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int viType; // Screen/Window
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uint32 viRowBytes; // width of each row in memory
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uint16 viXsize,viYsize; // Window
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uint32 viAppleMode; // Screen Color Depth
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uint32 viAppleID; // Screen DisplayID
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};
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extern struct VideoInfo VModes[]; // List of available video modes
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enum { // viAppleMode
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APPLE_1_BIT = 0x80,
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APPLE_2_BIT,
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APPLE_4_BIT,
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APPLE_8_BIT,
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APPLE_16_BIT,
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APPLE_32_BIT
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};
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// 1, 2, 4 and 8 bit depths use a color palette
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inline bool IsDirectMode(int mode)
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{
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return mode == APPLE_16_BIT || mode == APPLE_32_BIT;
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}
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// Return the depth code that corresponds to the specified bits-per-pixel value
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inline int DepthModeForPixelDepth(int depth)
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{
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switch (depth) {
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case 1: return APPLE_1_BIT;
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case 2: return APPLE_2_BIT;
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case 4: return APPLE_4_BIT;
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case 8: return APPLE_8_BIT;
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case 15: case 16: return APPLE_16_BIT;
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case 24: case 32: return APPLE_32_BIT;
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default: return APPLE_1_BIT;
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}
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}
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// Return a bytes-per-row value (assuming no padding) for the specified depth and pixel width
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inline uint32 TrivialBytesPerRow(uint32 width, int mode)
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{
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switch (mode) {
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case APPLE_1_BIT: return (width + 7)/8;
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case APPLE_2_BIT: return (width + 3)/4;
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case APPLE_4_BIT: return (width + 1)/2;
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case APPLE_8_BIT: return width;
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case APPLE_16_BIT: return width * 2;
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case APPLE_32_BIT: return width * 4;
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default: return width;
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}
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}
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enum { // viAppleID
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APPLE_640x480 = 0x81,
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APPLE_W_640x480,
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APPLE_800x600,
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APPLE_W_800x600,
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APPLE_1024x768,
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APPLE_1152x768,
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APPLE_1152x900,
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APPLE_1280x1024,
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APPLE_1600x1200,
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APPLE_CUSTOM,
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APPLE_ID_MIN = APPLE_640x480,
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APPLE_ID_MAX = APPLE_CUSTOM
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};
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enum { // Display type
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DIS_INVALID,
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DIS_SCREEN,
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DIS_WINDOW
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};
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extern bool video_activated; // Flag: video display activated, mouse and keyboard data valid
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extern uint32 screen_base; // Frame buffer base address
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extern int cur_mode; // Number of current video mode (index in VModes array)
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extern int display_type; // Current display type (see above)
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extern rgb_color mac_pal[256];
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extern rgb_color mac_gamma[256];
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extern uint8 remap_mac_be[256];
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extern uint8 MacCursor[68];
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struct VidLocals{
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uint16 saveMode;
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uint32 saveData;
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uint16 savePage;
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uint32 saveBaseAddr;
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uint32 gammaTable; // Mac address of gamma tble
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uint32 maxGammaTableSize; // Biggest gamma table allocated
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uint32 saveVidParms;
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bool luminanceMapping; // Luminance mapping on/off
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bool cursorHardware; // True if using hardware cursor
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int32 cursorX; // Hardware cursor state
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int32 cursorY;
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uint32 cursorVisible;
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uint32 cursorSet;
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bool cursorHotFlag;
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uint8 cursorHotX;
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uint8 cursorHotY;
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uint32 vslServiceID; // VSL interrupt service ID
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bool interruptsEnabled; // VBL interrupts on/off
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uint32 regEntryID; // Mac address of the service owner
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};
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extern VidLocals *private_data; // Pointer to driver local variables (there is only one display, so this is ok)
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extern bool VideoInit(void);
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extern void VideoExit(void);
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extern void VideoVBL(void);
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extern void VideoInstallAccel(void);
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extern void VideoQuitFullScreen(void);
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extern void video_set_palette(void);
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extern void video_set_gamma(int n_colors);
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extern void video_set_cursor(void);
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extern bool video_can_change_cursor(void);
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extern int16 video_mode_change(VidLocals *csSave, uint32 ParamPtr);
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extern void video_set_dirty_area(int x, int y, int w, int h);
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extern int16 VSLDoInterruptService(uint32 arg1);
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extern void NQDMisc(uint32 arg1, uintptr arg2);
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// Native QuickDraw acceleration callbacks
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extern bool NQD_sync_hook(uint32);
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extern bool NQD_bitblt_hook(uint32);
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extern bool NQD_fillrect_hook(uint32);
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extern bool NQD_unknown_hook(uint32);
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extern void NQD_bitblt(uint32);
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extern void NQD_invrect(uint32);
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extern void NQD_fillrect(uint32);
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extern bool keyfile_valid;
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#endif
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