| 1 |
|
/* |
| 2 |
|
* video.h - Video/graphics emulation |
| 3 |
|
* |
| 4 |
< |
* Basilisk II (C) 1997-2001 Christian Bauer |
| 4 |
> |
* Basilisk II (C) 1997-2002 Christian Bauer |
| 5 |
|
* |
| 6 |
|
* This program is free software; you can redistribute it and/or modify |
| 7 |
|
* it under the terms of the GNU General Public License as published by |
| 23 |
|
|
| 24 |
|
#include <vector> |
| 25 |
|
|
| 26 |
+ |
#ifndef NO_STD_NAMESPACE |
| 27 |
+ |
using std::vector; |
| 28 |
+ |
#endif |
| 29 |
+ |
|
| 30 |
+ |
|
| 31 |
|
/* |
| 32 |
|
Some of the terminology here is completely frelled. In Basilisk II, a |
| 33 |
|
"video mode" refers to a combination of resolution and color depth, and |
| 56 |
|
VDEPTH_32BIT // "Millions" |
| 57 |
|
}; |
| 58 |
|
|
| 59 |
< |
inline uint16 DepthToAppleMode(video_depth depth) |
| 55 |
< |
{ |
| 56 |
< |
return depth + 0x80; |
| 57 |
< |
} |
| 58 |
< |
|
| 59 |
< |
inline video_depth AppleModeToDepth(uint16 mode) |
| 60 |
< |
{ |
| 61 |
< |
return video_depth(mode - 0x80); |
| 62 |
< |
} |
| 63 |
< |
|
| 59 |
> |
// 1, 2, 4 and 8 bit depths use a color palette |
| 60 |
|
inline bool IsDirectMode(video_depth depth) |
| 61 |
|
{ |
| 62 |
|
return depth == VDEPTH_16BIT || depth == VDEPTH_32BIT; |
| 63 |
|
} |
| 64 |
|
|
| 69 |
– |
inline bool IsDirectMode(uint16 mode) |
| 70 |
– |
{ |
| 71 |
– |
return IsDirectMode(AppleModeToDepth(mode)); |
| 72 |
– |
} |
| 73 |
– |
|
| 65 |
|
// Return the depth code that corresponds to the specified bits-per-pixel value |
| 66 |
|
inline video_depth DepthModeForPixelDepth(int depth) |
| 67 |
|
{ |
| 86 |
|
case VDEPTH_8BIT: return width; |
| 87 |
|
case VDEPTH_16BIT: return width * 2; |
| 88 |
|
case VDEPTH_32BIT: return width * 4; |
| 89 |
+ |
default: return width; |
| 90 |
|
} |
| 91 |
|
} |
| 92 |
|
|
| 93 |
+ |
|
| 94 |
|
/* |
| 95 |
|
You are not completely free in your selection of depth/resolution |
| 96 |
|
combinations: |
| 124 |
|
uint32 x; // X size of screen (pixels) |
| 125 |
|
uint32 y; // Y size of screen (pixels) |
| 126 |
|
uint32 resolution_id; // Resolution ID (should be >= 0x80 and uniquely identify the sets of modes with the same X/Y size) |
| 134 |
– |
uint32 bytes_per_row; // Bytes per row of frame buffer |
| 127 |
|
video_depth depth; // Color depth (see definitions above) |
| 128 |
+ |
uint32 bytes_per_row; // Bytes per row of frame buffer |
| 129 |
+ |
uint32 user_data; // Free for use by platform-specific code |
| 130 |
|
}; |
| 131 |
|
|
| 132 |
|
inline bool IsDirectMode(const video_mode &mode) |
| 134 |
|
return IsDirectMode(mode.depth); |
| 135 |
|
} |
| 136 |
|
|
| 143 |
– |
// List of all supported video modes |
| 144 |
– |
extern std::vector<video_mode> VideoModes; |
| 137 |
|
|
| 138 |
< |
// Description for one (possibly virtual) monitor |
| 139 |
< |
struct monitor_desc { |
| 140 |
< |
uint32 mac_frame_base; // Mac frame buffer address |
| 141 |
< |
video_mode mode; // Currently selected video mode description |
| 138 |
> |
// Mac video driver per-display private variables (opaque) |
| 139 |
> |
struct video_locals; |
| 140 |
> |
|
| 141 |
> |
|
| 142 |
> |
// Abstract base class representing one (possibly virtual) monitor |
| 143 |
> |
// ("monitor" = rectangular display with a contiguous frame buffer) |
| 144 |
> |
class monitor_desc { |
| 145 |
> |
public: |
| 146 |
> |
monitor_desc(const vector<video_mode> &available_modes, video_depth default_depth, uint32 default_id); |
| 147 |
> |
virtual ~monitor_desc() {} |
| 148 |
> |
|
| 149 |
> |
// Get Mac slot ID number |
| 150 |
> |
uint8 get_slot_id(void) const {return slot_id;} |
| 151 |
> |
|
| 152 |
> |
// Get current Mac frame buffer base address |
| 153 |
> |
uint32 get_mac_frame_base(void) const {return mac_frame_base;} |
| 154 |
> |
|
| 155 |
> |
// Set Mac frame buffer base address (called from switch_to_mode()) |
| 156 |
> |
void set_mac_frame_base(uint32 base) {mac_frame_base = base;} |
| 157 |
> |
|
| 158 |
> |
// Get current video mode |
| 159 |
> |
const video_mode &get_current_mode(void) const {return *current_mode;} |
| 160 |
> |
|
| 161 |
> |
// Get Apple mode id for given depth |
| 162 |
> |
uint16 depth_to_apple_mode(video_depth depth) const {return apple_mode_for_depth[depth];} |
| 163 |
> |
|
| 164 |
> |
// Get current color depth |
| 165 |
> |
uint16 get_apple_mode(void) const {return depth_to_apple_mode(current_mode->depth);} |
| 166 |
> |
|
| 167 |
> |
// Get bytes-per-row value for specified resolution/depth |
| 168 |
> |
// (if the mode isn't supported, make a good guess) |
| 169 |
> |
uint32 get_bytes_per_row(video_depth depth, uint32 id) const; |
| 170 |
> |
|
| 171 |
> |
// Check whether a mode with the specified depth exists on this display |
| 172 |
> |
bool has_depth(video_depth depth) const; |
| 173 |
> |
|
| 174 |
> |
// Mac video driver functions |
| 175 |
> |
int16 driver_open(void); |
| 176 |
> |
int16 driver_control(uint16 code, uint32 param, uint32 dce); |
| 177 |
> |
int16 driver_status(uint16 code, uint32 param); |
| 178 |
> |
|
| 179 |
> |
protected: |
| 180 |
> |
vector<video_mode> modes; // List of supported video modes |
| 181 |
> |
vector<video_mode>::const_iterator current_mode; // Currently selected video mode |
| 182 |
> |
|
| 183 |
> |
uint32 mac_frame_base; // Mac frame buffer address for current mode |
| 184 |
> |
|
| 185 |
> |
// Mac video driver per-display private variables/functions |
| 186 |
> |
private: |
| 187 |
> |
// Check whether the specified resolution ID is one of the supported resolutions |
| 188 |
> |
bool has_resolution(uint32 id) const; |
| 189 |
> |
|
| 190 |
> |
// Return iterator signifying "invalid mode" |
| 191 |
> |
vector<video_mode>::const_iterator invalid_mode(void) const {return modes.end();} |
| 192 |
> |
|
| 193 |
> |
// Find specified mode (depth/resolution) (or invalid_mode() if not found) |
| 194 |
> |
vector<video_mode>::const_iterator find_mode(uint16 apple_mode, uint32 id) const; |
| 195 |
> |
|
| 196 |
> |
// Find maximum supported depth for given resolution ID |
| 197 |
> |
video_depth max_depth_of_resolution(uint32 id) const; |
| 198 |
> |
|
| 199 |
> |
// Get X/Y size of specified resolution |
| 200 |
> |
void get_size_of_resolution(uint32 id, uint32 &x, uint32 &y) const; |
| 201 |
> |
|
| 202 |
> |
// Set palette to 50% gray |
| 203 |
> |
void set_gray_palette(void); |
| 204 |
> |
|
| 205 |
> |
// Load gamma-corrected black-to-white ramp to palette for direct-color mode |
| 206 |
> |
void load_ramp_palette(void); |
| 207 |
> |
|
| 208 |
> |
// Allocate gamma table of specified size |
| 209 |
> |
bool allocate_gamma_table(int size); |
| 210 |
> |
|
| 211 |
> |
// Set gamma table (0 = build linear ramp) |
| 212 |
> |
bool set_gamma_table(uint32 user_table); |
| 213 |
> |
|
| 214 |
> |
// Switch video mode |
| 215 |
> |
void switch_mode(vector<video_mode>::const_iterator it, uint32 param, uint32 dce); |
| 216 |
> |
|
| 217 |
> |
uint8 slot_id; // NuBus slot ID number |
| 218 |
> |
static uint8 next_slot_id; // Next available slot ID |
| 219 |
> |
|
| 220 |
> |
uint8 palette[256 * 3]; // Color palette, 256 entries, RGB |
| 221 |
> |
|
| 222 |
> |
bool luminance_mapping; // Luminance mapping on/off |
| 223 |
> |
bool interrupts_enabled; // VBL interrupts on/off |
| 224 |
> |
bool dm_present; // We received a GetVideoParameters call, so the Display Manager seems to be present |
| 225 |
> |
|
| 226 |
> |
uint32 gamma_table; // Mac address of gamma table |
| 227 |
> |
int alloc_gamma_table_size; // Allocated size of gamma table |
| 228 |
> |
|
| 229 |
> |
uint16 current_apple_mode; // Currently selected depth/resolution |
| 230 |
> |
uint32 current_id; |
| 231 |
> |
uint16 preferred_apple_mode; // Preferred depth/resolution |
| 232 |
> |
uint32 preferred_id; |
| 233 |
> |
|
| 234 |
> |
uint32 slot_param; // Mac address of Slot Manager parameter block |
| 235 |
> |
|
| 236 |
> |
// For compatibility reasons with older (pre-Display Manager) versions of |
| 237 |
> |
// MacOS, the Apple modes must start at 0x80 and be contiguous. Therefore |
| 238 |
> |
// we maintain an array to map the depth codes to the corresponding Apple |
| 239 |
> |
// mode. |
| 240 |
> |
uint16 apple_mode_for_depth[6]; |
| 241 |
> |
|
| 242 |
> |
// The following functions are implemented by platform-specific code |
| 243 |
> |
public: |
| 244 |
> |
|
| 245 |
> |
// Called by the video driver to switch the video mode on this display |
| 246 |
> |
// (must call set_mac_frame_base()) |
| 247 |
> |
virtual void switch_to_current_mode(void) = 0; |
| 248 |
> |
|
| 249 |
> |
// Called by the video driver to set the color palette (in indexed modes) |
| 250 |
> |
// or the gamma table (in direct modes) |
| 251 |
> |
virtual void set_palette(uint8 *pal, int num) = 0; |
| 252 |
|
}; |
| 253 |
|
|
| 254 |
< |
// Description of the main (and currently the only) monitor, set by VideoInit() |
| 255 |
< |
extern monitor_desc VideoMonitor; |
| 254 |
> |
// Vector of pointers to available monitor descriptions, filled by VideoInit() |
| 255 |
> |
extern vector<monitor_desc *> VideoMonitors; |
| 256 |
> |
|
| 257 |
|
|
| 258 |
|
extern int16 VideoDriverOpen(uint32 pb, uint32 dce); |
| 259 |
|
extern int16 VideoDriverControl(uint32 pb, uint32 dce); |
| 260 |
|
extern int16 VideoDriverStatus(uint32 pb, uint32 dce); |
| 261 |
|
|
| 262 |
+ |
|
| 263 |
|
// System specific and internal functions/data |
| 264 |
|
extern bool VideoInit(bool classic); |
| 265 |
|
extern void VideoExit(void); |
| 269 |
|
extern void VideoInterrupt(void); |
| 270 |
|
extern void VideoRefresh(void); |
| 271 |
|
|
| 168 |
– |
// Called by the video driver to switch the video mode |
| 169 |
– |
extern void video_switch_to_mode(const video_mode &mode); |
| 170 |
– |
|
| 171 |
– |
// Called by the video driver to set the color palette (in indexed modes) |
| 172 |
– |
// or gamma table (in direct modes) |
| 173 |
– |
extern void video_set_palette(uint8 *pal); |
| 174 |
– |
|
| 272 |
|
#endif |
