DevVGATmpl.h@ 34024

Last change on this file since 34024 was 34024, checked in by vboxsync, 14 years ago
VGA: Added support for double scanned text modes.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 17.1 KB

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1	/* $Id: DevVGATmpl.h 34024 2010-11-12 09:47:37Z vboxsync $ */
2	/** @file
3	* DevVGA - VBox VGA/VESA device, code templates.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	* --------------------------------------------------------------------
17	*
18	* This code is based on:
19	*
20	* QEMU VGA Emulator templates
21	*
22	* Copyright (c) 2003 Fabrice Bellard
23	*
24	* Permission is hereby granted, free of charge, to any person obtaining a copy
25	* of this software and associated documentation files (the "Software"), to deal
26	* in the Software without restriction, including without limitation the rights
27	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
28	* copies of the Software, and to permit persons to whom the Software is
29	* furnished to do so, subject to the following conditions:
30	*
31	* The above copyright notice and this permission notice shall be included in
32	* all copies or substantial portions of the Software.
33	*
34	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
37	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
38	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
39	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
40	* THE SOFTWARE.
41	*/
42
43	#if DEPTH == 8
44	#define BPP 1
45	#define PIXEL_TYPE uint8_t
46	#elif DEPTH == 15 \|\| DEPTH == 16
47	#define BPP 2
48	#define PIXEL_TYPE uint16_t
49	#elif DEPTH == 32
50	#define BPP 4
51	#define PIXEL_TYPE uint32_t
52	#else
53	#error unsupport depth
54	#endif
55
56	#if DEPTH != 15
57
58	static inline void glue(vga_draw_glyph_line_, DEPTH)(uint8_t *d,
59	int font_data,
60	uint32_t xorcol,
61	uint32_t bgcol,
62	int dscan,
63	int linesize)
64	{
65	#if BPP == 1
66	((uint32_t *)d)[0] = (dmask16[(font_data >> 4)] & xorcol) ^ bgcol;
67	((uint32_t *)d)[1] = (dmask16[(font_data >> 0) & 0xf] & xorcol) ^ bgcol;
68	if (dscan) {
69	uint8_t *c = d + linesize;
70	((uint32_t )c)[0] = ((uint32_t )d)[0];
71	((uint32_t )c)[1] = ((uint32_t )d)[1];
72	}
73	#elif BPP == 2
74	((uint32_t *)d)[0] = (dmask4[(font_data >> 6)] & xorcol) ^ bgcol;
75	((uint32_t *)d)[1] = (dmask4[(font_data >> 4) & 3] & xorcol) ^ bgcol;
76	((uint32_t *)d)[2] = (dmask4[(font_data >> 2) & 3] & xorcol) ^ bgcol;
77	((uint32_t *)d)[3] = (dmask4[(font_data >> 0) & 3] & xorcol) ^ bgcol;
78	if (dscan)
79	memcpy(d + linesize, d, 4 * sizeof(uint32_t));
80	#else
81	((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
82	((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
83	((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
84	((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
85	((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
86	((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
87	((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
88	((uint32_t *)d)[7] = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
89	if (dscan)
90	memcpy(d + linesize, d, 8 * sizeof(uint32_t));
91	#endif
92	}
93
94	static void glue(vga_draw_glyph8_, DEPTH)(uint8_t *d, int linesize,
95	const uint8_t *font_ptr, int h,
96	uint32_t fgcol, uint32_t bgcol, int dscan)
97	{
98	uint32_t xorcol;
99	int font_data;
100
101	xorcol = bgcol ^ fgcol;
102	do {
103	font_data = font_ptr[0];
104	glue(vga_draw_glyph_line_, DEPTH)(d, font_data, xorcol, bgcol, dscan, linesize);
105	font_ptr += 4;
106	d += linesize << dscan;
107	} while (--h);
108	}
109
110	static void glue(vga_draw_glyph16_, DEPTH)(uint8_t *d, int linesize,
111	const uint8_t *font_ptr, int h,
112	uint32_t fgcol, uint32_t bgcol, int dscan)
113	{
114	uint32_t xorcol;
115	int font_data;
116
117	xorcol = bgcol ^ fgcol;
118	do {
119	font_data = font_ptr[0];
120	glue(vga_draw_glyph_line_, DEPTH)(d,
121	expand4to8[font_data >> 4],
122	xorcol, bgcol, dscan, linesize);
123	glue(vga_draw_glyph_line_, DEPTH)(d + 8 * BPP,
124	expand4to8[font_data & 0x0f],
125	xorcol, bgcol, dscan, linesize);
126	font_ptr += 4;
127	d += linesize << dscan;
128	} while (--h);
129	}
130
131	static void glue(vga_draw_glyph9_, DEPTH)(uint8_t *d, int linesize,
132	const uint8_t *font_ptr, int h,
133	uint32_t fgcol, uint32_t bgcol, int dup9)
134	{
135	uint32_t xorcol, v;
136	int font_data;
137
138	xorcol = bgcol ^ fgcol;
139	do {
140	font_data = font_ptr[0];
141	#if BPP == 1
142	cpu_to_32wu((uint32_t *)d, (dmask16[(font_data >> 4)] & xorcol) ^ bgcol);
143	v = (dmask16[(font_data >> 0) & 0xf] & xorcol) ^ bgcol;
144	cpu_to_32wu(((uint32_t *)d)+1, v);
145	if (dup9)
146	((uint8_t )d)[8] = v >> (24 (1 - BIG));
147	else
148	((uint8_t *)d)[8] = bgcol;
149
150	#elif BPP == 2
151	cpu_to_32wu(((uint32_t *)d)+0, (dmask4[(font_data >> 6)] & xorcol) ^ bgcol);
152	cpu_to_32wu(((uint32_t *)d)+1, (dmask4[(font_data >> 4) & 3] & xorcol) ^ bgcol);
153	cpu_to_32wu(((uint32_t *)d)+2, (dmask4[(font_data >> 2) & 3] & xorcol) ^ bgcol);
154	v = (dmask4[(font_data >> 0) & 3] & xorcol) ^ bgcol;
155	cpu_to_32wu(((uint32_t *)d)+3, v);
156	if (dup9)
157	((uint16_t )d)[8] = v >> (16 (1 - BIG));
158	else
159	((uint16_t *)d)[8] = bgcol;
160	#else
161	((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
162	((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
163	((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
164	((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
165	((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
166	((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
167	((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
168	v = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
169	((uint32_t *)d)[7] = v;
170	if (dup9)
171	((uint32_t *)d)[8] = v;
172	else
173	((uint32_t *)d)[8] = bgcol;
174	#endif
175	font_ptr += 4;
176	d += linesize;
177	} while (--h);
178	}
179
180	/*
181	* 4 color mode
182	*/
183	static void glue(vga_draw_line2_, DEPTH)(VGAState s1, uint8_t d,
184	const uint8_t *s, int width)
185	{
186	uint32_t plane_mask, *palette, data, v, src_inc, dwb_mode;
187	int x;
188
189	palette = s1->last_palette;
190	plane_mask = mask16[s1->ar[0x12] & 0xf];
191	dwb_mode = (s1->cr[0x14] & 0x40) ? 2 : (s1->cr[0x17] & 0x40) ? 0 : 1;
192	src_inc = 4 << dwb_mode;
193	width >>= 3;
194	for(x = 0; x < width; x++) {
195	data = ((uint32_t *)s)[0];
196	data &= plane_mask;
197	v = expand2[GET_PLANE(data, 0)];
198	v \|= expand2[GET_PLANE(data, 2)] << 2;
199	((PIXEL_TYPE *)d)[0] = palette[v >> 12];
200	((PIXEL_TYPE *)d)[1] = palette[(v >> 8) & 0xf];
201	((PIXEL_TYPE *)d)[2] = palette[(v >> 4) & 0xf];
202	((PIXEL_TYPE *)d)[3] = palette[(v >> 0) & 0xf];
203
204	v = expand2[GET_PLANE(data, 1)];
205	v \|= expand2[GET_PLANE(data, 3)] << 2;
206	((PIXEL_TYPE *)d)[4] = palette[v >> 12];
207	((PIXEL_TYPE *)d)[5] = palette[(v >> 8) & 0xf];
208	((PIXEL_TYPE *)d)[6] = palette[(v >> 4) & 0xf];
209	((PIXEL_TYPE *)d)[7] = palette[(v >> 0) & 0xf];
210	d += BPP * 8;
211	s += src_inc;
212	}
213	}
214
215	#if BPP == 1
216	#define PUT_PIXEL2(d, n, v) ((uint16_t *)d)[(n)] = (v)
217	#elif BPP == 2
218	#define PUT_PIXEL2(d, n, v) ((uint32_t *)d)[(n)] = (v)
219	#else
220	#define PUT_PIXEL2(d, n, v) \
221	((uint32_t )d)[2(n)] = ((uint32_t )d)[2(n)+1] = (v)
222	#endif
223
224	/*
225	* 4 color mode, dup2 horizontal
226	*/
227	static void glue(vga_draw_line2d2_, DEPTH)(VGAState s1, uint8_t d,
228	const uint8_t *s, int width)
229	{
230	uint32_t plane_mask, *palette, data, v, src_inc, dwb_mode;
231	int x;
232
233	palette = s1->last_palette;
234	plane_mask = mask16[s1->ar[0x12] & 0xf];
235	dwb_mode = (s1->cr[0x14] & 0x40) ? 2 : (s1->cr[0x17] & 0x40) ? 0 : 1;
236	src_inc = 4 << dwb_mode;
237	width >>= 3;
238	for(x = 0; x < width; x++) {
239	data = ((uint32_t *)s)[0];
240	data &= plane_mask;
241	v = expand2[GET_PLANE(data, 0)];
242	v \|= expand2[GET_PLANE(data, 2)] << 2;
243	PUT_PIXEL2(d, 0, palette[v >> 12]);
244	PUT_PIXEL2(d, 1, palette[(v >> 8) & 0xf]);
245	PUT_PIXEL2(d, 2, palette[(v >> 4) & 0xf]);
246	PUT_PIXEL2(d, 3, palette[(v >> 0) & 0xf]);
247
248	v = expand2[GET_PLANE(data, 1)];
249	v \|= expand2[GET_PLANE(data, 3)] << 2;
250	PUT_PIXEL2(d, 4, palette[v >> 12]);
251	PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
252	PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
253	PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
254	d += BPP * 16;
255	s += src_inc;
256	}
257	}
258
259	/*
260	* 16 color mode
261	*/
262	static void glue(vga_draw_line4_, DEPTH)(VGAState s1, uint8_t d,
263	const uint8_t *s, int width)
264	{
265	uint32_t plane_mask, data, v, *palette;
266	int x;
267
268	palette = s1->last_palette;
269	plane_mask = mask16[s1->ar[0x12] & 0xf];
270	width >>= 3;
271	for(x = 0; x < width; x++) {
272	data = ((uint32_t *)s)[0];
273	data &= plane_mask;
274	v = expand4[GET_PLANE(data, 0)];
275	v \|= expand4[GET_PLANE(data, 1)] << 1;
276	v \|= expand4[GET_PLANE(data, 2)] << 2;
277	v \|= expand4[GET_PLANE(data, 3)] << 3;
278	((PIXEL_TYPE *)d)[0] = palette[v >> 28];
279	((PIXEL_TYPE *)d)[1] = palette[(v >> 24) & 0xf];
280	((PIXEL_TYPE *)d)[2] = palette[(v >> 20) & 0xf];
281	((PIXEL_TYPE *)d)[3] = palette[(v >> 16) & 0xf];
282	((PIXEL_TYPE *)d)[4] = palette[(v >> 12) & 0xf];
283	((PIXEL_TYPE *)d)[5] = palette[(v >> 8) & 0xf];
284	((PIXEL_TYPE *)d)[6] = palette[(v >> 4) & 0xf];
285	((PIXEL_TYPE *)d)[7] = palette[(v >> 0) & 0xf];
286	d += BPP * 8;
287	s += 4;
288	}
289	}
290
291	/*
292	* 16 color mode, dup2 horizontal
293	*/
294	static void glue(vga_draw_line4d2_, DEPTH)(VGAState s1, uint8_t d,
295	const uint8_t *s, int width)
296	{
297	uint32_t plane_mask, data, v, *palette;
298	int x;
299
300	palette = s1->last_palette;
301	plane_mask = mask16[s1->ar[0x12] & 0xf];
302	width >>= 3;
303	for(x = 0; x < width; x++) {
304	data = ((uint32_t *)s)[0];
305	data &= plane_mask;
306	v = expand4[GET_PLANE(data, 0)];
307	v \|= expand4[GET_PLANE(data, 1)] << 1;
308	v \|= expand4[GET_PLANE(data, 2)] << 2;
309	v \|= expand4[GET_PLANE(data, 3)] << 3;
310	PUT_PIXEL2(d, 0, palette[v >> 28]);
311	PUT_PIXEL2(d, 1, palette[(v >> 24) & 0xf]);
312	PUT_PIXEL2(d, 2, palette[(v >> 20) & 0xf]);
313	PUT_PIXEL2(d, 3, palette[(v >> 16) & 0xf]);
314	PUT_PIXEL2(d, 4, palette[(v >> 12) & 0xf]);
315	PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
316	PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
317	PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
318	d += BPP * 16;
319	s += 4;
320	}
321	}
322
323	/*
324	* 256 color mode, double pixels
325	*
326	* XXX: add plane_mask support (never used in standard VGA modes)
327	*/
328	static void glue(vga_draw_line8d2_, DEPTH)(VGAState s1, uint8_t d,
329	const uint8_t *s, int width)
330	{
331	uint32_t *palette;
332	int x;
333
334	palette = s1->last_palette;
335	width >>= 3;
336	for(x = 0; x < width; x++) {
337	PUT_PIXEL2(d, 0, palette[s[0]]);
338	PUT_PIXEL2(d, 1, palette[s[1]]);
339	PUT_PIXEL2(d, 2, palette[s[2]]);
340	PUT_PIXEL2(d, 3, palette[s[3]]);
341	d += BPP * 8;
342	s += 4;
343	}
344	}
345
346	/*
347	* standard 256 color mode
348	*
349	* XXX: add plane_mask support (never used in standard VGA modes)
350	*/
351	static void glue(vga_draw_line8_, DEPTH)(VGAState s1, uint8_t d,
352	const uint8_t *s, int width)
353	{
354	uint32_t *palette;
355	int x;
356
357	palette = s1->last_palette;
358	width >>= 3;
359	for(x = 0; x < width; x++) {
360	((PIXEL_TYPE *)d)[0] = palette[s[0]];
361	((PIXEL_TYPE *)d)[1] = palette[s[1]];
362	((PIXEL_TYPE *)d)[2] = palette[s[2]];
363	((PIXEL_TYPE *)d)[3] = palette[s[3]];
364	((PIXEL_TYPE *)d)[4] = palette[s[4]];
365	((PIXEL_TYPE *)d)[5] = palette[s[5]];
366	((PIXEL_TYPE *)d)[6] = palette[s[6]];
367	((PIXEL_TYPE *)d)[7] = palette[s[7]];
368	d += BPP * 8;
369	s += 8;
370	}
371	}
372
373	#endif /* DEPTH != 15 */
374
375
376	/* XXX: optimize */
377
378	/*
379	* 15 bit color
380	*/
381	static void glue(vga_draw_line15_, DEPTH)(VGAState s1, uint8_t d,
382	const uint8_t *s, int width)
383	{
384	#if DEPTH == 15 && defined(WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
385	memcpy(d, s, width * 2);
386	#else
387	int w;
388	uint32_t v, r, g, b;
389
390	w = width;
391	do {
392	v = lduw_raw((void *)s);
393	r = (v >> 7) & 0xf8;
394	g = (v >> 2) & 0xf8;
395	b = (v << 3) & 0xf8;
396	((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
397	s += 2;
398	d += BPP;
399	} while (--w != 0);
400	#endif
401	}
402
403	/*
404	* 16 bit color
405	*/
406	static void glue(vga_draw_line16_, DEPTH)(VGAState s1, uint8_t d,
407	const uint8_t *s, int width)
408	{
409	#if DEPTH == 16 && defined(WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
410	memcpy(d, s, width * 2);
411	#else
412	int w;
413	uint32_t v, r, g, b;
414
415	w = width;
416	do {
417	v = lduw_raw((void *)s);
418	r = (v >> 8) & 0xf8;
419	g = (v >> 3) & 0xfc;
420	b = (v << 3) & 0xf8;
421	((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
422	s += 2;
423	d += BPP;
424	} while (--w != 0);
425	#endif
426	}
427
428	/*
429	* 24 bit color
430	*/
431	static void glue(vga_draw_line24_, DEPTH)(VGAState s1, uint8_t d,
432	const uint8_t *s, int width)
433	{
434	int w;
435	uint32_t r, g, b;
436
437	w = width;
438	do {
439	#if defined(TARGET_WORDS_BIGENDIAN)
440	r = s[0];
441	g = s[1];
442	b = s[2];
443	#else
444	b = s[0];
445	g = s[1];
446	r = s[2];
447	#endif
448	((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
449	s += 3;
450	d += BPP;
451	} while (--w != 0);
452	}
453
454	/*
455	* 32 bit color
456	*/
457	static void glue(vga_draw_line32_, DEPTH)(VGAState s1, uint8_t d,
458	const uint8_t *s, int width)
459	{
460	#if DEPTH == 32 && defined(WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
461	memcpy(d, s, width * 4);
462	#else
463	int w;
464	uint32_t r, g, b;
465
466	w = width;
467	do {
468	#if defined(TARGET_WORDS_BIGENDIAN)
469	r = s[1];
470	g = s[2];
471	b = s[3];
472	#else
473	b = s[0];
474	g = s[1];
475	r = s[2];
476	#endif
477	((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
478	s += 4;
479	d += BPP;
480	} while (--w != 0);
481	#endif
482	}
483
484	#if DEPTH != 15
485	#ifndef VBOX
486	#ifdef VBOX
487	static
488	#endif/* VBOX */
489	void glue(vga_draw_cursor_line_, DEPTH)(uint8_t *d1,
490	const uint8_t *src1,
491	int poffset, int w,
492	unsigned int color0,
493	unsigned int color1,
494	unsigned int color_xor)
495	{
496	const uint8_t plane0, plane1;
497	int x, b0, b1;
498	uint8_t *d;
499
500	d = d1;
501	plane0 = src1;
502	plane1 = src1 + poffset;
503	for(x = 0; x < w; x++) {
504	b0 = (plane0[x >> 3] >> (7 - (x & 7))) & 1;
505	b1 = (plane1[x >> 3] >> (7 - (x & 7))) & 1;
506	#if DEPTH == 8
507	switch(b0 \| (b1 << 1)) {
508	case 0:
509	break;
510	case 1:
511	d[0] ^= color_xor;
512	break;
513	case 2:
514	d[0] = color0;
515	break;
516	case 3:
517	d[0] = color1;
518	break;
519	}
520	#elif DEPTH == 16
521	switch(b0 \| (b1 << 1)) {
522	case 0:
523	break;
524	case 1:
525	((uint16_t *)d)[0] ^= color_xor;
526	break;
527	case 2:
528	((uint16_t *)d)[0] = color0;
529	break;
530	case 3:
531	((uint16_t *)d)[0] = color1;
532	break;
533	}
534	#elif DEPTH == 32
535	switch(b0 \| (b1 << 1)) {
536	case 0:
537	break;
538	case 1:
539	((uint32_t *)d)[0] ^= color_xor;
540	break;
541	case 2:
542	((uint32_t *)d)[0] = color0;
543	break;
544	case 3:
545	((uint32_t *)d)[0] = color1;
546	break;
547	}
548	#else
549	#error unsupported depth
550	#endif
551	d += BPP;
552	}
553	}
554	#endif /* !VBOX */
555	#endif
556
557	#undef PUT_PIXEL2
558	#undef DEPTH
559	#undef BPP
560	#undef PIXEL_TYPE

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