| 1 |
/* |
| 2 |
* video.cpp - Video/graphics emulation |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-2001 Christian Bauer |
| 5 |
* Portions (C) 1997-1999 Marc Hellwig |
| 6 |
* |
| 7 |
* This program is free software; you can redistribute it and/or modify |
| 8 |
* it under the terms of the GNU General Public License as published by |
| 9 |
* the Free Software Foundation; either version 2 of the License, or |
| 10 |
* (at your option) any later version. |
| 11 |
* |
| 12 |
* This program is distributed in the hope that it will be useful, |
| 13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 |
* GNU General Public License for more details. |
| 16 |
* |
| 17 |
* You should have received a copy of the GNU General Public License |
| 18 |
* along with this program; if not, write to the Free Software |
| 19 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 |
*/ |
| 21 |
|
| 22 |
/* |
| 23 |
* SEE ALSO |
| 24 |
* Inside Macintosh: Devices, chapter 1 "Device Manager" |
| 25 |
* Designing Cards and Drivers for the Macintosh Family, Second Edition |
| 26 |
*/ |
| 27 |
|
| 28 |
#include <stdio.h> |
| 29 |
|
| 30 |
#include "sysdeps.h" |
| 31 |
#include "cpu_emulation.h" |
| 32 |
#include "main.h" |
| 33 |
#include "macos_util.h" |
| 34 |
#include "video.h" |
| 35 |
#include "video_defs.h" |
| 36 |
|
| 37 |
#define DEBUG 0 |
| 38 |
#include "debug.h" |
| 39 |
|
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|
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// List of supported video modes |
| 42 |
vector<video_mode> VideoModes; |
| 43 |
|
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// Description of the main monitor |
| 45 |
monitor_desc VideoMonitor; |
| 46 |
|
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// Local variables (per monitor) |
| 48 |
struct { |
| 49 |
monitor_desc *desc; // Pointer to description of monitor handled by this instance of the driver |
| 50 |
uint8 palette[256 * 3]; // Color palette, 256 entries, RGB |
| 51 |
bool luminance_mapping; // Luminance mapping on/off |
| 52 |
bool interrupts_enabled; // VBL interrupts on/off |
| 53 |
uint16 current_mode; // Currently selected depth/resolution |
| 54 |
uint32 current_id; |
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uint16 preferred_mode; // Preferred depth/resolution |
| 56 |
uint32 preferred_id; |
| 57 |
} VidLocal; |
| 58 |
|
| 59 |
|
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/* |
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* Check whether specified resolution ID is one of the supported resolutions |
| 62 |
*/ |
| 63 |
|
| 64 |
static bool has_resolution(uint32 id) |
| 65 |
{ |
| 66 |
vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end(); |
| 67 |
while (i != end) { |
| 68 |
if (i->resolution_id == id) |
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return true; |
| 70 |
++i; |
| 71 |
} |
| 72 |
return false; |
| 73 |
} |
| 74 |
|
| 75 |
|
| 76 |
/* |
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* Find maximum supported depth for given resolution ID |
| 78 |
*/ |
| 79 |
|
| 80 |
static video_depth max_depth_of_resolution(uint32 id) |
| 81 |
{ |
| 82 |
video_depth m = VDEPTH_1BIT; |
| 83 |
vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end(); |
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while (i != end) { |
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if (i->depth > m) |
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m = i->depth; |
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++i; |
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} |
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return m; |
| 90 |
} |
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|
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|
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/* |
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* Get X/Y size of specified resolution |
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*/ |
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|
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static void get_size_of_resolution(uint32 id, uint32 &x, uint32 &y) |
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{ |
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vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end(); |
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while (i != end) { |
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if (i->resolution_id == id) { |
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x = i->x; |
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y = i->y; |
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return; |
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} |
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++i; |
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} |
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} |
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|
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|
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/* |
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* Driver Open() routine |
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*/ |
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|
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int16 VideoDriverOpen(uint32 pb, uint32 dce) |
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{ |
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D(bug("VideoDriverOpen\n")); |
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|
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// This shouldn't happen unless the platform-specific video code is broken |
| 120 |
if (VideoModes.empty()) |
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fprintf(stderr, "No valid video modes found (broken video driver?)\n"); |
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|
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// Init local variables |
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VidLocal.desc = &VideoMonitor; |
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VidLocal.luminance_mapping = false; |
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VidLocal.interrupts_enabled = false; |
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VidLocal.current_mode = DepthToAppleMode(VidLocal.desc->mode.depth); |
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VidLocal.current_id = VidLocal.desc->mode.resolution_id; |
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VidLocal.preferred_mode = VidLocal.current_mode; |
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VidLocal.preferred_id = VidLocal.current_id; |
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|
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// Init color palette (solid gray) |
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if (!IsDirectMode(VidLocal.desc->mode)) { |
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for (int i=0; i<256; i++) { |
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VidLocal.palette[i * 3 + 0] = 127; |
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VidLocal.palette[i * 3 + 1] = 127; |
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VidLocal.palette[i * 3 + 2] = 127; |
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} |
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video_set_palette(VidLocal.palette); |
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} |
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return noErr; |
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} |
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|
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|
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/* |
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* Driver Control() routine |
| 147 |
*/ |
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|
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int16 VideoDriverControl(uint32 pb, uint32 dce) |
| 150 |
{ |
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uint16 code = ReadMacInt16(pb + csCode); |
| 152 |
uint32 param = ReadMacInt32(pb + csParam); |
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D(bug("VideoDriverControl %d\n", code)); |
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switch (code) { |
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|
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case cscSetMode: { // Set color depth |
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uint16 mode = ReadMacInt16(param + csMode); |
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D(bug(" SetMode %04x\n", mode)); |
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//!! switch mode |
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WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base); |
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//!! VidLocal.current_mode = mode; |
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if (mode != VidLocal.current_mode) |
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return paramErr; |
| 164 |
else |
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return noErr; |
| 166 |
} |
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|
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case cscSetEntries: { // Set palette |
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D(bug(" SetEntries table %08lx, count %d, start %d\n", ReadMacInt32(param + csTable), ReadMacInt16(param + csCount), ReadMacInt16(param + csStart))); |
| 170 |
if (IsDirectMode(VidLocal.desc->mode)) |
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return controlErr; |
| 172 |
|
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uint32 s_pal = ReadMacInt32(param + csTable); // Source palette |
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uint8 *d_pal; // Destination palette |
| 175 |
uint16 count = ReadMacInt16(param + csCount); |
| 176 |
if (!s_pal || count > 255) |
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return paramErr; |
| 178 |
|
| 179 |
if (ReadMacInt16(param + csStart) == 0xffff) { // Indexed |
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for (uint32 i=0; i<=count; i++) { |
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d_pal = VidLocal.palette + ReadMacInt16(s_pal) * 3; |
| 182 |
uint8 red = (uint16)ReadMacInt16(s_pal + 2) >> 8; |
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uint8 green = (uint16)ReadMacInt16(s_pal + 4) >> 8; |
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uint8 blue = (uint16)ReadMacInt16(s_pal + 6) >> 8; |
| 185 |
if (VidLocal.luminance_mapping) |
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red = green = blue = (red * 0x4ccc + green * 0x970a + blue * 0x1c29) >> 16; |
| 187 |
*d_pal++ = red; |
| 188 |
*d_pal++ = green; |
| 189 |
*d_pal++ = blue; |
| 190 |
s_pal += 8; |
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} |
| 192 |
} else { // Sequential |
| 193 |
d_pal = VidLocal.palette + ReadMacInt16(param + csStart) * 3; |
| 194 |
for (uint32 i=0; i<=count; i++) { |
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uint8 red = (uint16)ReadMacInt16(s_pal + 2) >> 8; |
| 196 |
uint8 green = (uint16)ReadMacInt16(s_pal + 4) >> 8; |
| 197 |
uint8 blue = (uint16)ReadMacInt16(s_pal + 6) >> 8; |
| 198 |
if (VidLocal.luminance_mapping) |
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red = green = blue = (red * 0x4ccc + green * 0x970a + blue * 0x1c29) >> 16; |
| 200 |
*d_pal++ = red; |
| 201 |
*d_pal++ = green; |
| 202 |
*d_pal++ = blue; |
| 203 |
s_pal += 8; |
| 204 |
} |
| 205 |
} |
| 206 |
video_set_palette(VidLocal.palette); |
| 207 |
return noErr; |
| 208 |
} |
| 209 |
|
| 210 |
case cscSetGamma: // Set gamma table |
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D(bug(" SetGamma\n")); |
| 212 |
//!! |
| 213 |
return noErr; |
| 214 |
|
| 215 |
case cscGrayPage: { // Fill page with dithered gray pattern |
| 216 |
D(bug(" GrayPage %d\n", ReadMacInt16(param + csPage))); |
| 217 |
if (ReadMacInt16(param + csPage)) |
| 218 |
return paramErr; |
| 219 |
|
| 220 |
uint32 pattern[6] = { |
| 221 |
0xaaaaaaaa, // 1 bpp |
| 222 |
0xcccccccc, // 2 bpp |
| 223 |
0xf0f0f0f0, // 4 bpp |
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0xff00ff00, // 8 bpp |
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0xffff0000, // 16 bpp |
| 226 |
0xffffffff // 32 bpp |
| 227 |
}; |
| 228 |
uint32 p = VidLocal.desc->mac_frame_base; |
| 229 |
uint32 pat = pattern[VidLocal.desc->mode.depth]; |
| 230 |
for (uint32 y=0; y<VidLocal.desc->mode.y; y++) { |
| 231 |
for (uint32 x=0; x<VidLocal.desc->mode.bytes_per_row; x+=4) { |
| 232 |
WriteMacInt32(p + x, pat); |
| 233 |
if (VidLocal.desc->mode.depth == VDEPTH_32BIT) |
| 234 |
pat = ~pat; |
| 235 |
} |
| 236 |
p += VidLocal.desc->mode.bytes_per_row; |
| 237 |
pat = ~pat; |
| 238 |
} |
| 239 |
return noErr; |
| 240 |
} |
| 241 |
|
| 242 |
case cscSetGray: // Enable/disable luminance mapping |
| 243 |
D(bug(" SetGray %02x\n", ReadMacInt8(param + csMode))); |
| 244 |
VidLocal.luminance_mapping = ReadMacInt8(param + csMode); |
| 245 |
return noErr; |
| 246 |
|
| 247 |
case cscSetInterrupt: // Enable/disable VBL |
| 248 |
D(bug(" SetInterrupt %02x\n", ReadMacInt8(param + csMode))); |
| 249 |
VidLocal.interrupts_enabled = (ReadMacInt8(param + csMode) == 0); |
| 250 |
return noErr; |
| 251 |
|
| 252 |
// case cscDirectSetEntries: |
| 253 |
|
| 254 |
case cscSetDefaultMode: { // Set default color depth |
| 255 |
uint16 mode = ReadMacInt16(param + csMode); |
| 256 |
D(bug(" SetDefaultMode %04x\n", mode)); |
| 257 |
VidLocal.preferred_mode = mode; |
| 258 |
return noErr; |
| 259 |
} |
| 260 |
|
| 261 |
case cscSwitchMode: { // Switch video mode (depth and resolution) |
| 262 |
uint16 mode = ReadMacInt16(param + csMode); |
| 263 |
uint32 id = ReadMacInt32(param + csData); |
| 264 |
D(bug(" SwitchMode %04x, %08x\n", mode, id)); |
| 265 |
//!! switch mode |
| 266 |
WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base); |
| 267 |
//!! VidLocal.current_mode = mode; |
| 268 |
//!! VidLocal.current_id = id; |
| 269 |
if (mode != VidLocal.current_mode || id != VidLocal.current_id) |
| 270 |
return paramErr; |
| 271 |
else |
| 272 |
return noErr; |
| 273 |
} |
| 274 |
|
| 275 |
case cscSavePreferredConfiguration: { |
| 276 |
uint16 mode = ReadMacInt16(param + csMode); |
| 277 |
uint32 id = ReadMacInt32(param + csData); |
| 278 |
D(bug(" SavePreferredConfiguration %04x, %08x\n", mode, id)); |
| 279 |
VidLocal.preferred_mode = mode; |
| 280 |
VidLocal.preferred_id = id; |
| 281 |
return noErr; |
| 282 |
} |
| 283 |
|
| 284 |
default: |
| 285 |
printf("WARNING: Unknown VideoDriverControl(%d)\n", code); |
| 286 |
return controlErr; |
| 287 |
} |
| 288 |
} |
| 289 |
|
| 290 |
|
| 291 |
/* |
| 292 |
* Driver Status() routine |
| 293 |
*/ |
| 294 |
|
| 295 |
int16 VideoDriverStatus(uint32 pb, uint32 dce) |
| 296 |
{ |
| 297 |
uint16 code = ReadMacInt16(pb + csCode); |
| 298 |
uint32 param = ReadMacInt32(pb + csParam); |
| 299 |
D(bug("VideoDriverStatus %d\n", code)); |
| 300 |
switch (code) { |
| 301 |
|
| 302 |
case cscGetMode: // Get current color depth |
| 303 |
D(bug(" GetMode -> %04x, base %08x\n", VidLocal.current_mode, VidLocal.desc->mac_frame_base)); |
| 304 |
WriteMacInt16(param + csMode, VidLocal.current_mode); |
| 305 |
WriteMacInt16(param + csPage, 0); |
| 306 |
WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base); |
| 307 |
return noErr; |
| 308 |
|
| 309 |
// case cscGetEntries: |
| 310 |
|
| 311 |
case cscGetPageCnt: // Get number of pages |
| 312 |
D(bug(" GetPageCnt -> 1\n")); |
| 313 |
WriteMacInt16(param + csPage, 1); |
| 314 |
return noErr; |
| 315 |
|
| 316 |
case cscGetPageBase: // Get page base address |
| 317 |
D(bug(" GetPageBase -> %08x\n", VidLocal.desc->mac_frame_base)); |
| 318 |
WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base); |
| 319 |
return noErr; |
| 320 |
|
| 321 |
case cscGetGray: // Get luminance mapping flag |
| 322 |
D(bug(" GetGray -> %d\n", VidLocal.luminance_mapping)); |
| 323 |
WriteMacInt8(param, VidLocal.luminance_mapping ? 1 : 0); |
| 324 |
return noErr; |
| 325 |
|
| 326 |
case cscGetInterrupt: // Get interrupt disable flag |
| 327 |
D(bug(" GetInterrupt -> %d\n", VidLocal.interrupts_enabled)); |
| 328 |
WriteMacInt8(param, VidLocal.interrupts_enabled ? 0 : 1); |
| 329 |
return noErr; |
| 330 |
|
| 331 |
// case cscGetGamma: |
| 332 |
|
| 333 |
case cscGetDefaultMode: // Get default color depth |
| 334 |
D(bug(" GetDefaultMode -> %04x\n", VidLocal.preferred_mode)); |
| 335 |
WriteMacInt16(param + csMode, VidLocal.preferred_mode); |
| 336 |
return noErr; |
| 337 |
|
| 338 |
case cscGetCurMode: // Get current video mode (depth and resolution) |
| 339 |
D(bug(" GetCurMode -> %04x/%08x\n", VidLocal.current_mode, VidLocal.current_id)); |
| 340 |
WriteMacInt16(param + csMode, VidLocal.current_mode); |
| 341 |
WriteMacInt32(param + csData, VidLocal.current_id); |
| 342 |
WriteMacInt16(param + csPage, 0); |
| 343 |
WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base); |
| 344 |
return noErr; |
| 345 |
|
| 346 |
case cscGetConnection: // Get monitor information |
| 347 |
D(bug(" GetConnection\n")); |
| 348 |
WriteMacInt16(param + csDisplayType, 6); // 21" Multiscan |
| 349 |
WriteMacInt8(param + csConnectTaggedType, 6); |
| 350 |
WriteMacInt8(param + csConnectTaggedData, 0x23); |
| 351 |
WriteMacInt32(param + csConnectFlags, 0x03); // All modes valid and safe |
| 352 |
WriteMacInt32(param + csDisplayComponent, 0); |
| 353 |
return noErr; |
| 354 |
|
| 355 |
case cscGetModeBaseAddress: // Get frame buffer base address |
| 356 |
D(bug(" GetModeBaseAddress -> %08x\n", VidLocal.desc->mac_frame_base)); |
| 357 |
WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base); // Base address of video RAM for the current DisplayModeID and relative bit depth |
| 358 |
return noErr; |
| 359 |
|
| 360 |
case cscGetPreferredConfiguration: // Get default video mode (depth and resolution) |
| 361 |
D(bug(" GetPreferredConfiguration -> %04x/%08x\n", VidLocal.preferred_mode, VidLocal.preferred_id)); |
| 362 |
WriteMacInt16(param + csMode, VidLocal.preferred_mode); |
| 363 |
WriteMacInt32(param + csData, VidLocal.preferred_id); |
| 364 |
return noErr; |
| 365 |
|
| 366 |
case cscGetNextResolution: { // Called iteratively to obtain a list of all supported resolutions |
| 367 |
uint32 id = ReadMacInt32(param + csPreviousDisplayModeID); |
| 368 |
D(bug(" GetNextResolution %08x\n", id)); |
| 369 |
|
| 370 |
switch (id) { |
| 371 |
case 0: |
| 372 |
// Return current resolution |
| 373 |
id = VidLocal.current_id; |
| 374 |
break; |
| 375 |
|
| 376 |
case 0xfffffffe: |
| 377 |
// Return first supported resolution |
| 378 |
id = 0x80; |
| 379 |
while (!has_resolution(id)) |
| 380 |
id++; |
| 381 |
break; |
| 382 |
|
| 383 |
default: |
| 384 |
// Get next resolution |
| 385 |
if (!has_resolution(id)) |
| 386 |
return paramErr; |
| 387 |
id++; |
| 388 |
while (!has_resolution(id) && id < 0x100) |
| 389 |
id++; |
| 390 |
if (id == 0x100) { // No more resolutions |
| 391 |
WriteMacInt32(param + csRIDisplayModeID, 0xfffffffd); |
| 392 |
return noErr; |
| 393 |
} |
| 394 |
break; |
| 395 |
} |
| 396 |
|
| 397 |
WriteMacInt32(param + csRIDisplayModeID, id); |
| 398 |
uint32 x, y; |
| 399 |
get_size_of_resolution(id, x, y); |
| 400 |
WriteMacInt32(param + csHorizontalPixels, x); |
| 401 |
WriteMacInt32(param + csVerticalLines, y); |
| 402 |
WriteMacInt32(param + csRefreshRate, 75 << 16); |
| 403 |
WriteMacInt16(param + csMaxDepthMode, DepthToAppleMode(max_depth_of_resolution(id))); |
| 404 |
uint32 flags = 0xb; // mode valid, safe and shown in Monitors panel |
| 405 |
if (id == VidLocal.preferred_id) |
| 406 |
flags |= 4; // default mode |
| 407 |
WriteMacInt32(param + csResolutionFlags, flags); |
| 408 |
return noErr; |
| 409 |
} |
| 410 |
|
| 411 |
case cscGetVideoParameters: { // Get information about specified resolution/depth |
| 412 |
uint32 id = ReadMacInt32(param + csDisplayModeID); |
| 413 |
uint16 mode = ReadMacInt16(param + csDepthMode); |
| 414 |
D(bug(" GetVideoParameters %04x/%08x\n", mode, id)); |
| 415 |
|
| 416 |
vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end(); |
| 417 |
while (i != end) { |
| 418 |
if (DepthToAppleMode(i->depth) == mode && i->resolution_id == id) { |
| 419 |
uint32 vp = ReadMacInt32(param + csVPBlockPtr); |
| 420 |
WriteMacInt32(vp + vpBaseOffset, 0); |
| 421 |
WriteMacInt16(vp + vpRowBytes, i->bytes_per_row); |
| 422 |
WriteMacInt16(vp + vpBounds, 0); |
| 423 |
WriteMacInt16(vp + vpBounds + 2, 0); |
| 424 |
WriteMacInt16(vp + vpBounds + 4, i->y); |
| 425 |
WriteMacInt16(vp + vpBounds + 6, i->x); |
| 426 |
WriteMacInt16(vp + vpVersion, 0); |
| 427 |
WriteMacInt16(vp + vpPackType, 0); |
| 428 |
WriteMacInt32(vp + vpPackSize, 0); |
| 429 |
WriteMacInt32(vp + vpHRes, 0x00480000); |
| 430 |
WriteMacInt32(vp + vpVRes, 0x00480000); |
| 431 |
uint32 pix_type, pix_size, cmp_count, cmp_size, dev_type; |
| 432 |
switch (i->depth) { |
| 433 |
case VDEPTH_1BIT: |
| 434 |
pix_type = 0; pix_size = 1; |
| 435 |
cmp_count = 1; cmp_size = 1; |
| 436 |
dev_type = 0; // CLUT |
| 437 |
break; |
| 438 |
case VDEPTH_2BIT: |
| 439 |
pix_type = 0; pix_size = 2; |
| 440 |
cmp_count = 1; cmp_size = 2; |
| 441 |
dev_type = 0; // CLUT |
| 442 |
break; |
| 443 |
case VDEPTH_4BIT: |
| 444 |
pix_type = 0; pix_size = 4; |
| 445 |
cmp_count = 1; cmp_size = 4; |
| 446 |
dev_type = 0; // CLUT |
| 447 |
break; |
| 448 |
case VDEPTH_8BIT: |
| 449 |
pix_type = 0; pix_size = 8; |
| 450 |
cmp_count = 1; cmp_size = 8; |
| 451 |
dev_type = 0; // CLUT |
| 452 |
break; |
| 453 |
case VDEPTH_16BIT: |
| 454 |
pix_type = 0x10; pix_size = 16; |
| 455 |
cmp_count = 3; cmp_size = 5; |
| 456 |
dev_type = 2; // direct |
| 457 |
break; |
| 458 |
case VDEPTH_32BIT: |
| 459 |
pix_type = 0x10; pix_size = 32; |
| 460 |
cmp_count = 3; cmp_size = 8; |
| 461 |
dev_type = 2; // direct |
| 462 |
break; |
| 463 |
} |
| 464 |
WriteMacInt16(vp + vpPixelType, pix_type); |
| 465 |
WriteMacInt16(vp + vpPixelSize, pix_size); |
| 466 |
WriteMacInt16(vp + vpCmpCount, cmp_count); |
| 467 |
WriteMacInt16(vp + vpCmpSize, cmp_size); |
| 468 |
WriteMacInt32(param + csPageCount, 1); |
| 469 |
WriteMacInt32(param + csDeviceType, dev_type); |
| 470 |
return noErr; |
| 471 |
} |
| 472 |
++i; |
| 473 |
} |
| 474 |
return paramErr; // specified resolution/depth not supported |
| 475 |
} |
| 476 |
|
| 477 |
case cscGetModeTiming: { // Get video timing for specified resolution |
| 478 |
uint32 id = ReadMacInt32(param + csTimingMode); |
| 479 |
D(bug(" GetModeTiming %08x\n", id)); |
| 480 |
if (!has_resolution(id)) |
| 481 |
return paramErr; |
| 482 |
|
| 483 |
WriteMacInt32(param + csTimingFormat, FOURCC('d', 'e', 'c', 'l')); |
| 484 |
WriteMacInt32(param + csTimingData, 0); // unknown |
| 485 |
uint32 flags = 0xb; // mode valid, safe and shown in Monitors panel |
| 486 |
if (id == VidLocal.preferred_id) |
| 487 |
flags |= 4; // default mode |
| 488 |
WriteMacInt32(param + csTimingFlags, flags); |
| 489 |
return noErr; |
| 490 |
} |
| 491 |
|
| 492 |
default: |
| 493 |
printf("WARNING: Unknown VideoDriverStatus(%d)\n", code); |
| 494 |
return statusErr; |
| 495 |
} |
| 496 |
} |
