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/* |
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* video.h - Video/graphics emulation |
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* |
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* SheepShaver (C) 1997-2004 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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|
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#ifndef VIDEO_H |
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#define VIDEO_H |
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|
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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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|
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extern int16 VideoDoDriverIO(void *spaceID, void *commandID, void *commandContents, uint32 commandCode, uint32 commandKind); |
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|
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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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|
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extern struct VideoInfo VModes[]; // List of available video modes |
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|
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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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|
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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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|
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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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|
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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 / 8; |
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case APPLE_2_BIT: return width / 4; |
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case APPLE_4_BIT: return width / 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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|
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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_ID_MIN = APPLE_640x480, |
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APPLE_ID_MAX = APPLE_1600x1200 |
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}; |
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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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|
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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 uint8 remap_mac_be[256]; |
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extern uint8 MacCursor[68]; |
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|
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struct GammaTbl; |
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|
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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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GammaTbl *gammaTable; // Current gamma table |
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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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int32 cursorX; // Hardware cursor state. Unused, but must be remembered |
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int32 cursorY; |
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uint32 cursorVisible; |
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uint32 cursorSet; |
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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[4]; |
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}; |
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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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|
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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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|
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extern void video_set_palette(void); |
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extern void video_set_cursor(void); |
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extern int16 video_mode_change(VidLocals *csSave, uint32 ParamPtr); |
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|
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extern int16 VSLDoInterruptService(uint32 arg1); |
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extern void NQDMisc(uint32 arg1, void *arg2); |
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|
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extern bool keyfile_valid; |
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|
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#endif |
