/[gxemul]/upstream/0.4.4/src/devices/dev_ps2_gif.c
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Contents of /upstream/0.4.4/src/devices/dev_ps2_gif.c

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Revision 35 - (show annotations)
Mon Oct 8 16:21:26 2007 UTC (16 years, 8 months ago) by dpavlin
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0.4.4
1 /*
2 * Copyright (C) 2003-2007 Anders Gavare. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *
28 * $Id: dev_ps2_gif.c,v 1.34 2006/12/30 13:30:58 debug Exp $
29 *
30 * Playstation 2 "gif" graphics device.
31 *
32 * TODO: Convert dev_fb_access() accesses into direct framebuffer reads and
33 * writes, to improve performance.
34 *
35 * TODO 2: The way things are now, rgb bytes are copied from emulated
36 * space to the framebuffer as rgb, but on X Windows servers on
37 * big-endian machines that should be bgr. (?) Hm...
38 */
39
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43
44 #include "cpu.h"
45 #include "device.h"
46 #include "devices.h"
47 #include "machine.h"
48 #include "memory.h"
49 #include "misc.h"
50
51
52 #define DEV_PS2_GIF_LENGTH 0x10000
53
54 #define PS2_FB_ADDR 0x60000000ULL /* hopefully nothing else here */
55
56
57 struct gif_data {
58 struct cpu *cpu;
59 int xsize, ysize;
60 int bytes_per_pixel;
61 int transparent_text;
62 struct vfb_data *vfb_data;
63 };
64
65
66 /*
67 * test_triangle():
68 *
69 * Draw a triangle:
70 */
71 void test_triangle(struct gif_data *d,
72 int x1, int y1, int r1, int g1, int b1,
73 int x2, int y2, int r2, int g2, int b2,
74 int x3, int y3, int r3, int g3, int b3)
75 {
76 unsigned char *line = malloc(d->xsize * d->bytes_per_pixel);
77 int y, tmp, scale = 32768;
78 int xofs, xlen, savedxlen, xdir, x;
79 int r, g, b; /* scaled */
80 int xstart, xstop; /* scaled */
81 int rstart, rstop; /* scaled */
82 int gstart, gstop; /* scaled */
83 int bstart, bstop; /* scaled */
84 int rpx, gpx, bpx; /* scaled */
85 int xpy12, xpy13, xpy23;
86 int rpy12, rpy13, rpy23;
87 int gpy12, gpy13, gpy23;
88 int bpy12, bpy13, bpy23;
89
90 if (y2 > y3) {
91 tmp = x2; x2 = x3; x3 = tmp;
92 tmp = y2; y2 = y3; y3 = tmp;
93 tmp = r2; r2 = r3; r3 = tmp;
94 tmp = g2; g2 = g3; g3 = tmp;
95 tmp = b2; b2 = b3; b3 = tmp;
96 }
97
98 if (y1 > y2) {
99 tmp = x1; x1 = x2; x2 = tmp;
100 tmp = y1; y1 = y2; y2 = tmp;
101 tmp = r1; r1 = r2; r2 = tmp;
102 tmp = g1; g1 = g2; g2 = tmp;
103 tmp = b1; b1 = b2; b2 = tmp;
104 }
105
106 if (y1 > y3) {
107 tmp = x1; x1 = x3; x3 = tmp;
108 tmp = y1; y1 = y3; y3 = tmp;
109 tmp = r1; r1 = r3; r3 = tmp;
110 tmp = g1; g1 = g3; g3 = tmp;
111 tmp = b1; b1 = b3; b3 = tmp;
112 }
113
114 /* X change per line: */
115 xpy12 = (y2-y1)? scale*(x2-x1)/(y2-y1) : 0;
116 xpy13 = (y3-y1)? scale*(x3-x1)/(y3-y1) : 0;
117 xpy23 = (y3-y2)? scale*(x3-x2)/(y3-y2) : 0;
118
119 /* Color change per line: */
120 rpy12 = (y2-y1)? scale*(r2-r1)/(y2-y1) : 0;
121 rpy13 = (y3-y1)? scale*(r3-r1)/(y3-y1) : 0;
122 rpy23 = (y3-y2)? scale*(r3-r2)/(y3-y2) : 0;
123
124 gpy12 = (y2-y1)? scale*(g2-g1)/(y2-y1) : 0;
125 gpy13 = (y3-y1)? scale*(g3-g1)/(y3-y1) : 0;
126 gpy23 = (y3-y2)? scale*(g3-g2)/(y3-y2) : 0;
127
128 bpy12 = (y2-y1)? scale*(b2-b1)/(y2-y1) : 0;
129 bpy13 = (y3-y1)? scale*(b3-b1)/(y3-y1) : 0;
130 bpy23 = (y3-y2)? scale*(b3-b2)/(y3-y2) : 0;
131
132 xstart = xstop = x1 * scale;
133 rstart = rstop = r1 * scale;
134 gstart = gstop = g1 * scale;
135 bstart = bstop = b1 * scale;
136
137 for (y=y1; y<=y3; y++) {
138 if (xstart < xstop)
139 xofs = xstart/scale, xlen = (xstop-xstart)/scale + 1;
140 else
141 xofs = xstop/scale, xlen = (xstart-xstop)/scale + 1;
142
143 savedxlen = xlen;
144 xdir = (xstart < xstop)? 1 : -1;
145 r = rstart; g = gstart; b = bstart;
146
147 rpx = (xstop-xstart)? (rstop-rstart) / ((xstop-xstart)
148 / scale) : 0;
149 gpx = (xstop-xstart)? (gstop-gstart) / ((xstop-xstart)
150 / scale) : 0;
151 bpx = (xstop-xstart)? (bstop-bstart) / ((xstop-xstart)
152 / scale): 0;
153
154 x = xstart / scale;
155 while (xlen > 0) {
156 if (x>=0 && x<d->xsize) {
157 int c;
158 c = r/scale;
159 line[x * d->bytes_per_pixel + 0] = c<0?
160 0 : (c > 255? 255 : c);
161 c = g/scale;
162 line[x * d->bytes_per_pixel + 1] = c<0?
163 0 : (c > 255? 255 : c);
164 c = b/scale;
165 line[x * d->bytes_per_pixel + 2] = c<0?
166 0 : (c > 255? 255 : c);
167 }
168 r += rpx;
169 g += gpx;
170 b += bpx;
171 x += xdir;
172 xlen --;
173 }
174
175 dev_fb_access(d->cpu, d->cpu->mem,
176 (y*d->xsize + xofs) * d->bytes_per_pixel,
177 line + xofs * d->bytes_per_pixel,
178 savedxlen * d->bytes_per_pixel,
179 MEM_WRITE, d->vfb_data);
180
181 if (y<y2) {
182 xstart += xpy12;
183 rstart += rpy12;
184 gstart += gpy12;
185 bstart += bpy12;
186 } else {
187 xstart += xpy23;
188 rstart += rpy23;
189 gstart += gpy23;
190 bstart += bpy23;
191 }
192 xstop += xpy13;
193 rstop += rpy13;
194 gstop += gpy13;
195 bstop += bpy13;
196
197 if (y==y2) {
198 xstart = x2 * scale;
199 rstart = r2 * scale;
200 gstart = g2 * scale;
201 bstart = b2 * scale;
202 }
203 }
204 }
205
206
207 /*
208 * dev_ps2_gif_access():
209 */
210 DEVICE_ACCESS(ps2_gif)
211 {
212 unsigned int i;
213 struct gif_data *d = extra;
214
215 if (relative_addr + len > DEV_PS2_GIF_LENGTH)
216 return 0;
217
218 if (writeflag==MEM_READ) {
219 debug("[ gif read from addr 0x%x, len=%i ]\n",
220 (int)relative_addr, (int)len);
221 } else {
222 if (data[0] == 0x08 && data[1] == 0x80) {
223 /* Possibly "initialize 640x480 mode": */
224 debug("[ gif: initialize video mode (?) ]\n");
225 } else if (data[0] == 0x04 && data[1] == 0x00 && len > 300) {
226 /* Possibly "output 8x16 character": */
227 int xbase, ybase, xsize, ysize, x, y;
228
229 xbase = data[9*4 + 0] + (data[9*4 + 1] << 8);
230 ybase = data[9*4 + 2] + (data[9*4 + 3] << 8);
231
232 xsize = data[12*4 + 0] + (data[12*4 + 1] << 8);
233 ysize = data[13*4 + 0] + (data[13*4 + 1] << 8);
234 ysize &= ~0xf; /* multple of 16 */
235
236 /* debug("[ gif: putchar at (%i,%i), size (%i,%i) "
237 "]\n", xbase, ybase, xsize, ysize); */
238
239 /*
240 * NetBSD and Linux:
241 *
242 * [ gif write to addr 0x0 (len=608):
243 * 04 00 00 00 00 00 00 10, 0e 00 00 00 00 00 00 00,
244 * 00 00 00 00 00 00 0a 00, 50 00 00 00 00 00 00 00,
245 * 00 00 00 00 00 00 00 00, 51 00 00 00 00 00 00 00,
246 * 08 00 00 00 16 00 00 00, 52 00 00 00 00 00 00 00,
247 * 00 00 00 00 00 00 00 00, 53 00 00 00 00 00 00 00,
248 * 20 80 00 00 00 00 00 08, 00 00 00 00 00 00 00 00,
249 * 00 00 aa 80 00 00 aa 80, 00 00 aa 80 00 00 aa 80,
250 * 00 00 aa 80 00 00 aa 80, 00 00 aa 80 00 00 aa 80,
251 * aa aa 00 80 aa aa 00 80, 00 00 aa 80 00 00 aa 80,
252 * 00 00 aa 80 00 00 aa 80, 00 00 aa 80 00 00 aa 80,
253 */
254
255 /*
256 fatal("[ gif write to addr 0x%x (len=%i):",
257 (int)relative_addr, (int)len);
258 for (i=0; i<len; i++) {
259 fatal(" %02x", data[i]);
260 if ((i & 7) == 7)
261 fatal(",");
262 if ((i & 31) == 31)
263 fatal("\n");
264 }
265 fatal(" ]\n");
266 */
267
268 for (y=0; y<ysize; y++) {
269 int fb_addr = (xbase + (ybase+y) * d->xsize)
270 * d->bytes_per_pixel;
271 int addr = (24 + y*xsize) * 4;
272 for (x=0; x<xsize; x++) {
273 /* There are three bytes (r,g,b) at
274 data[addr + 0] .. [addr + 2].
275 TODO: This should be translated to a
276 direct update of the framebuffer. */
277
278 dev_fb_access(d->cpu, d->cpu->mem,
279 fb_addr, data + addr, 3, MEM_WRITE,
280 d->vfb_data);
281
282 fb_addr += d->bytes_per_pixel;
283 addr += 4;
284 }
285 }
286 } else if (data[0] == 0x04 && data[1] == 0x80 && len == 0x50) {
287 /* blockcopy */
288 int y_source, y_dest, x_source, x_dest, x_size, y_size;
289 x_source = data[8*4 + 0] + ((data[8*4 + 1]) << 8);
290 y_source = data[8*4 + 2] + ((data[8*4 + 3]) << 8);
291 x_dest = data[9*4 + 0] + ((data[9*4 + 1]) << 8);
292 y_dest = data[9*4 + 2] + ((data[9*4 + 3]) << 8);
293 x_size = data[12*4 + 0] + ((data[12*4 + 1]) << 8);
294 y_size = data[13*4 + 0] + ((data[13*4 + 1]) << 8);
295
296 /* debug("[ gif: blockcopy (%i,%i) -> (%i,%i), size="
297 "(%i,%i) ]\n", x_source,y_source, x_dest,y_dest,
298 x_size,y_size); */
299
300 framebuffer_blockcopyfill(d->vfb_data, 0, 0,0,0,
301 x_dest, y_dest, x_dest + x_size - 1, y_dest +
302 y_size - 1, x_source, y_source);
303 } else if (data[8] == 0x10 && data[9] == 0x55 && len == 48) {
304 /* Linux "clear": This is used by linux to clear the
305 lowest 16 pixels of the framebuffer. */
306 int xbase, ybase, xend, yend;
307
308 xbase = (data[8*4 + 0] + (data[8*4 + 1] << 8)) / 16;
309 ybase = (data[8*4 + 2] + (data[8*4 + 3] << 8)) / 16;
310 xend = (data[8*5 + 0] + (data[8*5 + 1] << 8)) / 16;
311 yend = (data[8*5 + 2] + (data[8*5 + 3] << 8)) / 16;
312
313 /* debug("[ gif: linux \"clear\" (%i,%i)-(%i,%i) ]\n",
314 xbase, ybase, xend, yend); */
315
316 framebuffer_blockcopyfill(d->vfb_data, 1, 0,0,0,
317 xbase, ybase, xend - 1, yend - 1, 0,0);
318 } else if (data[0] == 0x07 && data[1] == 0x80 && len == 128) {
319 /* NetBSD "output cursor": */
320 int xbase, ybase, xend, yend, x, y;
321
322 xbase = (data[20*4 + 0] + (data[20*4 + 1] << 8)) / 16;
323 ybase = (data[20*4 + 2] + (data[20*4 + 3] << 8)) / 16;
324 xend = (data[28*4 + 0] + (data[28*4 + 1] << 8)) / 16;
325 yend = (data[28*4 + 2] + (data[28*4 + 3] << 8)) / 16;
326
327 /* debug("[ gif: NETBSD cursor at (%i,%i)-(%i,%i) ]\n",
328 xbase, ybase, xend, yend); */
329
330 /* Output the cursor to framebuffer memory: */
331
332 for (y=ybase; y<=yend; y++)
333 for (x=xbase; x<=xend; x++) {
334 int fb_addr = (x + y * d->xsize) *
335 d->bytes_per_pixel;
336 unsigned char pixels[3];
337
338 dev_fb_access(d->cpu, d->cpu->mem,
339 fb_addr, pixels, sizeof(pixels),
340 MEM_READ, d->vfb_data);
341
342 pixels[0] = 0xff - pixels[0];
343 pixels[1] = 0xff - pixels[1];
344 pixels[2] = 0xff - pixels[2];
345
346 dev_fb_access(d->cpu, d->cpu->mem,
347 fb_addr, pixels, sizeof(pixels),
348 MEM_WRITE, d->vfb_data);
349 }
350 } else if (data[0] == 0x01 && data[1] == 0x00 && len == 80) {
351 /* Linux "output cursor": */
352 int xbase, ybase, xend, yend, x, y;
353
354 xbase = (data[7*8 + 0] + (data[7*8 + 1] << 8)) / 16;
355 ybase = (data[7*8 + 2] + (data[7*8 + 3] << 8)) / 16;
356 xend = (data[8*8 + 0] + (data[8*8 + 1] << 8)) / 16;
357 yend = (data[8*8 + 2] + (data[8*8 + 3] << 8)) / 16;
358
359 debug("[ gif: LINUX cursor at (%i,%i)-(%i,%i) ]\n",
360 xbase, ybase, xend, yend);
361
362 /* Output the cursor to framebuffer memory: */
363
364 for (y=ybase; y<=yend; y++)
365 for (x=xbase; x<=xend; x++) {
366 int fb_addr = (x + y * d->xsize) *
367 d->bytes_per_pixel;
368 unsigned char pixels[3];
369
370 dev_fb_access(d->cpu, d->cpu->mem,
371 fb_addr, pixels, sizeof(pixels),
372 MEM_READ, d->vfb_data);
373
374 pixels[0] = 0xff - pixels[0];
375 pixels[1] = 0xff - pixels[1];
376 pixels[2] = 0xff - pixels[2];
377
378 dev_fb_access(d->cpu, d->cpu->mem,
379 fb_addr, pixels, sizeof(pixels),
380 MEM_WRITE, d->vfb_data);
381 }
382 } else { /* Unknown command: */
383 fatal("[ gif write to addr 0x%x (len=%i):",
384 (int)relative_addr, len);
385 for (i=0; i<len; i++)
386 fatal(" %02x", data[i]);
387 fatal(" ]\n");
388 /* fatal("Unknown gif command.\n");
389 cpu->running = 0;
390 */ }
391 }
392
393 return 1;
394 }
395
396
397 /*
398 * devinit_ps2_gif():
399 *
400 * Attached to separate memory by devinit_ps2_gs().
401 */
402 DEVINIT(ps2_gif)
403 {
404 struct gif_data *d;
405
406 d = malloc(sizeof(struct gif_data));
407 if (d == NULL) {
408 fprintf(stderr, "out of memory\n");
409 exit(1);
410 }
411 memset(d, 0, sizeof(struct gif_data));
412
413 d->transparent_text = 0;
414 d->cpu = devinit->machine->cpus[0]; /* TODO */
415 d->xsize = 640; d->ysize = 480;
416 d->bytes_per_pixel = 3;
417
418 d->vfb_data = dev_fb_init(devinit->machine, devinit->machine->memory,
419 PS2_FB_ADDR, VFB_PLAYSTATION2,
420 d->xsize, d->ysize, d->xsize, d->ysize, 24, "Playstation 2");
421 if (d->vfb_data == NULL) {
422 fprintf(stderr, "could not initialize fb, out of memory\n");
423 exit(1);
424 }
425
426 #if 0
427 test_triangle(d, 300,50, 255,0,0, 50,150, 0,255,0, 600,400, 0,0,255);
428 test_triangle(d, 310,210, 128,32,0, 175,410, 0,32,0,
429 500,470, 125,255,125);
430 test_triangle(d, 100,450, 255,255,0, 250,370, 0,255,255,
431 400,470, 255,0,255);
432 #endif
433
434 memory_device_register(devinit->machine->memory, devinit->name,
435 devinit->addr, DEV_PS2_GIF_LENGTH, dev_ps2_gif_access, d,
436 DM_DEFAULT, NULL);
437
438 return 1;
439 }
440

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