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/* |
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* video.h - Video/graphics emulation |
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* |
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* Basilisk II (C) 1997-2001 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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#include <vector> |
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|
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// Color depth codes |
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enum video_depth { |
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VDEPTH_1BIT, // 2 colors |
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VDEPTH_2BIT, // 4 colors |
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VDEPTH_4BIT, // 16 colors |
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VDEPTH_8BIT, // 256 colors |
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VDEPTH_16BIT, // "Thousands" |
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VDEPTH_32BIT // "Millions" |
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}; |
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|
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inline uint16 DepthToAppleMode(video_depth depth) |
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{ |
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return depth + 0x80; |
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} |
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|
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inline video_depth AppleModeToDepth(uint16 mode) |
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{ |
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return video_depth(mode - 0x80); |
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} |
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|
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inline bool IsDirectMode(video_depth depth) |
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{ |
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return depth == VDEPTH_16BIT || depth == VDEPTH_32BIT; |
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} |
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|
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inline bool IsDirectMode(uint16 mode) |
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{ |
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return IsDirectMode(AppleModeToDepth(mode)); |
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} |
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|
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inline video_depth DepthModeForPixelDepth(int depth) |
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{ |
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switch (depth) { |
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case 1: return VDEPTH_1BIT; |
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case 2: return VDEPTH_2BIT; |
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case 4: return VDEPTH_4BIT; |
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case 8: return VDEPTH_8BIT; |
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case 15: case 16: return VDEPTH_16BIT; |
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case 24: case 32: return VDEPTH_32BIT; |
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default: return VDEPTH_1BIT; |
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} |
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} |
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|
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// Return a bytes-per-row value that assumes no padding for specified depth and pixel width |
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inline uint32 TrivialBytesPerRow(uint32 width, video_depth depth) |
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{ |
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switch (depth) { |
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case VDEPTH_1BIT: return width / 8; |
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case VDEPTH_2BIT: return width / 4; |
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case VDEPTH_4BIT: return width / 2; |
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case VDEPTH_8BIT: return width; |
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case VDEPTH_16BIT: return width * 2; |
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case VDEPTH_32BIT: return width * 4; |
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} |
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} |
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|
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// Description of one video mode |
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struct video_mode { |
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uint32 x; // X size of screen (pixels) |
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uint32 y; // Y size of screen (pixels) |
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uint32 resolution_id; // Resolution ID (should be >= 0x80 and uniquely identify the sets of modes with the same X/Y size) |
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uint32 bytes_per_row; // Bytes per row of frame buffer |
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video_depth depth; // Color depth (see definitions above) |
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}; |
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|
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inline bool IsDirectMode(const video_mode &mode) |
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{ |
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return IsDirectMode(mode.depth); |
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} |
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|
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// List of all supported video modes |
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extern std::vector<video_mode> VideoModes; |
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|
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// Description for one (possibly virtual) monitor |
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struct monitor_desc { |
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uint32 mac_frame_base; // Mac frame buffer address |
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video_mode mode; // Currently selected video mode description |
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}; |
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|
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extern monitor_desc VideoMonitor; // Description of the main monitor, set by VideoInit() |
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|
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extern int16 VideoDriverOpen(uint32 pb, uint32 dce); |
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extern int16 VideoDriverControl(uint32 pb, uint32 dce); |
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extern int16 VideoDriverStatus(uint32 pb, uint32 dce); |
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|
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// System specific and internal functions/data |
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extern bool VideoInit(bool classic); |
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extern void VideoExit(void); |
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|
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extern void VideoQuitFullScreen(void); |
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|
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extern void VideoInterrupt(void); |
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extern void VideoRefresh(void); |
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|
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extern void video_switch_to_mode(const video_mode &mode); |
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extern void video_set_palette(uint8 *pal); |
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|
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#endif |
