WebSVN – HelenOS – Blame – //branches/dd/uspace/srv/fb/fb.c

Rev	Author	Line No.	Line
4419	trochtova	1	/*
		2	* Copyright (c) 2008 Martin Decky
		3	* Copyright (c) 2006 Jakub Vana
		4	* Copyright (c) 2006 Ondrej Palkovsky
		5	* All rights reserved.
		6	*
		7	* Redistribution and use in source and binary forms, with or without
		8	* modification, are permitted provided that the following conditions
		9	* are met:
		10	*
		11	* - Redistributions of source code must retain the above copyright
		12	* notice, this list of conditions and the following disclaimer.
		13	* - Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	* - The name of the author may not be used to endorse or promote products
		17	* derived from this software without specific prior written permission.
		18	*
		19	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
		20	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
		21	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
		22	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
		23	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
		24	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		25	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		26	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		27	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
		28	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		29	*/
		30
		31	/**
		32	* @defgroup fb Graphical framebuffer
		33	* @brief HelenOS graphical framebuffer.
		34	* @ingroup fbs
		35	* @{
		36	*/
		37
		38	/** @file
		39	*/
		40
		41	#include <stdlib.h>
		42	#include <unistd.h>
		43	#include <string.h>
		44	#include <ddi.h>
		45	#include <sysinfo.h>
		46	#include <align.h>
		47	#include <as.h>
		48	#include <ipc/fb.h>
		49	#include <ipc/ipc.h>
		50	#include <ipc/ns.h>
		51	#include <ipc/services.h>
		52	#include <kernel/errno.h>
		53	#include <kernel/genarch/fb/visuals.h>
		54	#include <console/color.h>
		55	#include <console/style.h>
		56	#include <async.h>
		57	#include <bool.h>
		58
		59	#include "font-8x16.h"
		60	#include "fb.h"
		61	#include "main.h"
		62	#include "../console/screenbuffer.h"
		63	#include "ppm.h"
		64
		65	#include "pointer.xbm"
		66	#include "pointer_mask.xbm"
		67
		68	#define DEFAULT_BGCOLOR 0xf0f0f0
		69	#define DEFAULT_FGCOLOR 0x000000
		70
		71	#define GLYPH_UNAVAIL '?'
		72
		73	#define MAX_ANIM_LEN 8
		74	#define MAX_ANIMATIONS 4
		75	#define MAX_PIXMAPS 256 /*< Maximum number of saved pixmaps /
		76	#define MAX_VIEWPORTS 128 /*< Viewport is a rectangular area on the screen /
		77
		78	/** Function to render a pixel from a RGB value. */
		79	typedef void (rgb_conv_t)(void , uint32_t);
		80
		81	/** Function to draw a glyph. */
		82	typedef void (*dg_t)(unsigned int x, unsigned int y, bool cursor,
		83	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
		84
		85	struct {
		86	uint8_t *fb_addr;
		87
		88	unsigned int xres;
		89	unsigned int yres;
		90
		91	unsigned int scanline;
		92	unsigned int glyphscanline;
		93
		94	unsigned int pixelbytes;
		95	unsigned int glyphbytes;
		96
		97	/** Pre-rendered mask for rendering glyphs. Specific for the visual. */
		98	uint8_t *glyphs;
		99
		100	rgb_conv_t rgb_conv;
		101	} screen;
		102
		103	/** Backbuffer character cell. */
		104	typedef struct {
		105	uint32_t glyph;
		106	uint32_t fg_color;
		107	uint32_t bg_color;
		108	} bb_cell_t;
		109
		110	typedef struct {
		111	bool initialized;
		112	unsigned int x;
		113	unsigned int y;
		114	unsigned int width;
		115	unsigned int height;
		116
		117	/* Text support in window */
		118	unsigned int cols;
		119	unsigned int rows;
		120
		121	/*
		122	* Style and glyphs for text printing
		123	*/
		124
		125	/** Current attributes. */
		126	attr_rgb_t attr;
		127
		128	uint8_t *bgpixel;
		129
		130	/**
		131	* Glyph drawing function for this viewport. Different viewports
		132	* might use different drawing functions depending on whether their
		133	* scanlines are aligned on a word boundary.
		134	*/
		135	dg_t dglyph;
		136
		137	/* Auto-cursor position */
		138	bool cursor_active;
		139	unsigned int cur_col;
		140	unsigned int cur_row;
		141	bool cursor_shown;
		142
		143	/* Back buffer */
		144	bb_cell_t *backbuf;
		145	unsigned int bbsize;
		146	} viewport_t;
		147
		148	typedef struct {
		149	bool initialized;
		150	bool enabled;
		151	unsigned int vp;
		152
		153	unsigned int pos;
		154	unsigned int animlen;
		155	unsigned int pixmaps[MAX_ANIM_LEN];
		156	} animation_t;
		157
		158	static animation_t animations[MAX_ANIMATIONS];
		159	static bool anims_enabled;
		160
		161	typedef struct {
		162	unsigned int width;
		163	unsigned int height;
		164	uint8_t *data;
		165	} pixmap_t;
		166
		167	static pixmap_t pixmaps[MAX_PIXMAPS];
		168	static viewport_t viewports[128];
		169
		170	static bool client_connected = false; /*< Allow only 1 connection /
		171
		172	static uint32_t color_table[16] = {
		173	[COLOR_BLACK] = 0x000000,
		174	[COLOR_BLUE] = 0x0000f0,
		175	[COLOR_GREEN] = 0x00f000,
		176	[COLOR_CYAN] = 0x00f0f0,
		177	[COLOR_RED] = 0xf00000,
		178	[COLOR_MAGENTA] = 0xf000f0,
		179	[COLOR_YELLOW] = 0xf0f000,
		180	[COLOR_WHITE] = 0xf0f0f0,
		181
		182	[8 + COLOR_BLACK] = 0x000000,
		183	[8 + COLOR_BLUE] = 0x0000ff,
		184	[8 + COLOR_GREEN] = 0x00ff00,
		185	[8 + COLOR_CYAN] = 0x00ffff,
		186	[8 + COLOR_RED] = 0xff0000,
		187	[8 + COLOR_MAGENTA] = 0xff00ff,
		188	[8 + COLOR_YELLOW] = 0xffff00,
		189	[8 + COLOR_WHITE] = 0xffffff,
		190	};
		191
		192	static int rgb_from_attr(attr_rgb_t rgb, const attrs_t a);
		193	static int rgb_from_style(attr_rgb_t *rgb, int style);
		194	static int rgb_from_idx(attr_rgb_t *rgb, ipcarg_t fg_color,
		195	ipcarg_t bg_color, ipcarg_t flags);
		196
		197	static int fb_set_color(viewport_t *vport, ipcarg_t fg_color,
		198	ipcarg_t bg_color, ipcarg_t attr);
		199
		200	static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
		201	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
		202	static void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
		203	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
		204
		205	static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
		206	unsigned int row);
		207
		208
		209	#define RED(x, bits) ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
		210	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
		211	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
		212
		213	#define COL2X(col) ((col) * FONT_WIDTH)
		214	#define ROW2Y(row) ((row) * FONT_SCANLINES)
		215
		216	#define X2COL(x) ((x) / FONT_WIDTH)
		217	#define Y2ROW(y) ((y) / FONT_SCANLINES)
		218
		219	#define FB_POS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)
		220	#define BB_POS(vport, col, row) ((row) * vport->cols + (col))
		221	#define GLYPH_POS(glyph, y, cursor) (((glyph) + (cursor) * FONT_GLYPHS) * screen.glyphbytes + (y) * screen.glyphscanline)
		222
		223
		224	/** ARGB 8:8:8:8 conversion
		225	*
		226	*/
		227	static void rgb_0888(void *dst, uint32_t rgb)
		228	{
		229	((uint32_t ) dst) = rgb & 0xffffff;
		230	}
		231
		232
		233	/** ABGR 8:8:8:8 conversion
		234	*
		235	*/
		236	static void bgr_0888(void *dst, uint32_t rgb)
		237	{
		238	((uint32_t ) dst)
		239	= (BLUE(rgb, 8) << 16) \| (GREEN(rgb, 8) << 8) \| RED(rgb, 8);
		240	}
		241
		242
		243	/** RGB 8:8:8 conversion
		244	*
		245	*/
		246	static void rgb_888(void *dst, uint32_t rgb)
		247	{
		248	((uint8_t *) dst)[0] = BLUE(rgb, 8);
		249	((uint8_t *) dst)[1] = GREEN(rgb, 8);
		250	((uint8_t *) dst)[2] = RED(rgb, 8);
		251	}
		252
		253
		254	/** BGR 8:8:8 conversion
		255	*
		256	*/
		257	static void bgr_888(void *dst, uint32_t rgb)
		258	{
		259	((uint8_t *) dst)[0] = RED(rgb, 8);
		260	((uint8_t *) dst)[1] = GREEN(rgb, 8);
		261	((uint8_t *) dst)[2] = BLUE(rgb, 8);
		262	}
		263
		264
		265	/** RGB 5:5:5 conversion
		266	*
		267	*/
		268	static void rgb_555(void *dst, uint32_t rgb)
		269	{
		270	((uint16_t ) dst)
		271	= (RED(rgb, 5) << 10) \| (GREEN(rgb, 5) << 5) \| BLUE(rgb, 5);
		272	}
		273
		274
		275	/** RGB 5:6:5 conversion
		276	*
		277	*/
		278	static void rgb_565(void *dst, uint32_t rgb)
		279	{
		280	((uint16_t ) dst)
		281	= (RED(rgb, 5) << 11) \| (GREEN(rgb, 6) << 5) \| BLUE(rgb, 5);
		282	}
		283
		284
		285	/** RGB 3:2:3
		286	*
		287	*/
		288	static void rgb_323(void *dst, uint32_t rgb)
		289	{
		290	((uint8_t ) dst)
		291	= ~((RED(rgb, 3) << 5) \| (GREEN(rgb, 2) << 3) \| BLUE(rgb, 3));
		292	}
		293
		294	/** Draw a filled rectangle.
		295	*
		296	* @note Need real implementation that does not access VRAM twice.
		297	*/
		298	static void draw_filled_rect(unsigned int x0, unsigned int y0, unsigned int x1,
		299	unsigned int y1, uint32_t color)
		300	{
		301	unsigned int x, y;
		302	unsigned int copy_bytes;
		303
		304	uint8_t sp, dp;
		305	uint8_t cbuf[4];
		306
		307	if (y0 >= y1 \|\| x0 >= x1) return;
		308	screen.rgb_conv(cbuf, color);
		309
		310	sp = &screen.fb_addr[FB_POS(x0, y0)];
		311	dp = sp;
		312
		313	/* Draw the first line. */
		314	for (x = x0; x < x1; x++) {
		315	memcpy(dp, cbuf, screen.pixelbytes);
		316	dp += screen.pixelbytes;
		317	}
		318
		319	dp = sp + screen.scanline;
		320	copy_bytes = (x1 - x0) * screen.pixelbytes;
		321
		322	/* Draw the remaining lines by copying. */
		323	for (y = y0 + 1; y < y1; y++) {
		324	memcpy(dp, sp, copy_bytes);
		325	dp += screen.scanline;
		326	}
		327	}
		328
		329	/** Redraw viewport.
		330	*
		331	* @param vport Viewport to redraw
		332	*
		333	*/
		334	static void vport_redraw(viewport_t *vport)
		335	{
		336	unsigned int row, col;
		337
		338	for (row = 0; row < vport->rows; row++) {
		339	for (col = 0; col < vport->cols; col++) {
		340	draw_vp_glyph(vport, false, col, row);
		341	}
		342	}
		343
		344	if (COL2X(vport->cols) < vport->width) {
		345	draw_filled_rect(
		346	vport->x + COL2X(vport->cols), vport->y,
		347	vport->x + vport->width, vport->y + vport->height,
		348	vport->attr.bg_color);
		349	}
		350
		351	if (ROW2Y(vport->rows) < vport->height) {
		352	draw_filled_rect(
		353	vport->x, vport->y + ROW2Y(vport->rows),
		354	vport->x + vport->width, vport->y + vport->height,
		355	vport->attr.bg_color);
		356	}
		357	}
		358
		359	static void backbuf_clear(bb_cell_t *backbuf, size_t len, uint32_t fg_color,
		360	uint32_t bg_color)
		361	{
		362	unsigned i;
		363
		364	for (i = 0; i < len; i++) {
		365	backbuf[i].glyph = 0;
		366	backbuf[i].fg_color = fg_color;
		367	backbuf[i].bg_color = bg_color;
		368	}
		369	}
		370
		371	/** Clear viewport.
		372	*
		373	* @param vport Viewport to clear
		374	*
		375	*/
		376	static void vport_clear(viewport_t *vport)
		377	{
		378	backbuf_clear(vport->backbuf, vport->cols * vport->rows,
		379	vport->attr.fg_color, vport->attr.bg_color);
		380	vport_redraw(vport);
		381	}
		382
		383	/** Scroll viewport by the specified number of lines.
		384	*
		385	* @param vport Viewport to scroll
		386	* @param lines Number of lines to scroll
		387	*
		388	*/
		389	static void vport_scroll(viewport_t *vport, int lines)
		390	{
		391	unsigned int row, col;
		392	unsigned int x, y;
		393	uint32_t glyph;
		394	uint32_t fg_color;
		395	uint32_t bg_color;
		396	bb_cell_t bbp, xbp;
		397
		398	/*
		399	* Redraw.
		400	*/
		401
		402	y = vport->y;
		403	for (row = 0; row < vport->rows; row++) {
		404	x = vport->x;
		405	for (col = 0; col < vport->cols; col++) {
		406	if ((row + lines >= 0) && (row + lines < vport->rows)) {
		407	xbp = &vport->backbuf[BB_POS(vport, col, row + lines)];
		408	bbp = &vport->backbuf[BB_POS(vport, col, row)];
		409
		410	glyph = xbp->glyph;
		411	fg_color = xbp->fg_color;
		412	bg_color = xbp->bg_color;
		413
		414	if (bbp->glyph == glyph &&
		415	bbp->fg_color == xbp->fg_color &&
		416	bbp->bg_color == xbp->bg_color) {
		417	x += FONT_WIDTH;
		418	continue;
		419	}
		420	} else {
		421	glyph = 0;
		422	fg_color = vport->attr.fg_color;
		423	bg_color = vport->attr.bg_color;
		424	}
		425
		426	(*vport->dglyph)(x, y, false, screen.glyphs, glyph,
		427	fg_color, bg_color);
		428	x += FONT_WIDTH;
		429	}
		430	y += FONT_SCANLINES;
		431	}
		432
		433	/*
		434	* Scroll backbuffer.
		435	*/
		436
		437	if (lines > 0) {
		438	memmove(vport->backbuf, vport->backbuf + vport->cols * lines,
		439	vport->cols * (vport->rows - lines) * sizeof(bb_cell_t));
		440	backbuf_clear(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)],
		441	vport->cols * lines, vport->attr.fg_color, vport->attr.bg_color);
		442	} else {
		443	memmove(vport->backbuf - vport->cols * lines, vport->backbuf,
		444	vport->cols * (vport->rows + lines) * sizeof(bb_cell_t));
		445	backbuf_clear(vport->backbuf, - vport->cols * lines,
		446	vport->attr.fg_color, vport->attr.bg_color);
		447	}
		448	}
		449
		450	/** Render glyphs
		451	*
		452	* Convert glyphs from device independent font
		453	* description to current visual representation.
		454	*/
		455	static void render_glyphs(void)
		456	{
		457	unsigned int glyph;
		458
		459	for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
		460	unsigned int y;
		461
		462	for (y = 0; y < FONT_SCANLINES; y++) {
		463	unsigned int x;
		464
		465	for (x = 0; x < FONT_WIDTH; x++) {
		466	screen.rgb_conv(&screen.glyphs[GLYPH_POS(glyph, y, false) + x * screen.pixelbytes],
		467	(fb_font[glyph][y] & (1 << (7 - x)))
		468	? 0xffffff : 0x000000);
		469
		470	screen.rgb_conv(&screen.glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes],
		471	(fb_font[glyph][y] & (1 << (7 - x)))
		472	? 0x000000 : 0xffffff);
		473	}
		474	}
		475	}
		476	}
		477
		478
		479	/** Create new viewport
		480	*
		481	* @param x Origin of the viewport (x).
		482	* @param y Origin of the viewport (y).
		483	* @param width Width of the viewport.
		484	* @param height Height of the viewport.
		485	*
		486	* @return New viewport number.
		487	*
		488	*/
		489	static int vport_create(unsigned int x, unsigned int y,
		490	unsigned int width, unsigned int height)
		491	{
		492	unsigned int i;
		493
		494	for (i = 0; i < MAX_VIEWPORTS; i++) {
		495	if (!viewports[i].initialized)
		496	break;
		497	}
		498	if (i == MAX_VIEWPORTS)
		499	return ELIMIT;
		500
		501	unsigned int cols = width / FONT_WIDTH;
		502	unsigned int rows = height / FONT_SCANLINES;
		503	unsigned int bbsize = cols * rows * sizeof(bb_cell_t);
		504	unsigned int word_size = sizeof(unsigned long);
		505
		506	bb_cell_t backbuf = (bb_cell_t ) malloc(bbsize);
		507	if (!backbuf)
		508	return ENOMEM;
		509
		510	uint8_t bgpixel = (uint8_t ) malloc(screen.pixelbytes);
		511	if (!bgpixel) {
		512	free(backbuf);
		513	return ENOMEM;
		514	}
		515
		516	backbuf_clear(backbuf, cols * rows, DEFAULT_FGCOLOR, DEFAULT_BGCOLOR);
		517	memset(bgpixel, 0, screen.pixelbytes);
		518
		519	viewports[i].x = x;
		520	viewports[i].y = y;
		521	viewports[i].width = width;
		522	viewports[i].height = height;
		523
		524	viewports[i].cols = cols;
		525	viewports[i].rows = rows;
		526
		527	viewports[i].attr.bg_color = DEFAULT_BGCOLOR;
		528	viewports[i].attr.fg_color = DEFAULT_FGCOLOR;
		529
		530	viewports[i].bgpixel = bgpixel;
		531
		532	/*
		533	* Conditions necessary to select aligned version:
		534	*
		535	* - word size is divisible by pixelbytes
		536	* - cell scanline size is divisible by word size
		537	* - cell scanlines are word-aligned
		538	*/
		539	if ((word_size % screen.pixelbytes) == 0 &&
		540	(FONT_WIDTH * screen.pixelbytes) % word_size == 0 &&
		541	(x * screen.pixelbytes) % word_size == 0 &&
		542	screen.scanline % word_size == 0) {
		543
		544	viewports[i].dglyph = draw_glyph_aligned;
		545	} else {
		546	viewports[i].dglyph = draw_glyph_fallback;
		547	}
		548
		549	viewports[i].cur_col = 0;
		550	viewports[i].cur_row = 0;
		551	viewports[i].cursor_active = false;
		552	viewports[i].cursor_shown = false;
		553
		554	viewports[i].bbsize = bbsize;
		555	viewports[i].backbuf = backbuf;
		556
		557	viewports[i].initialized = true;
		558
		559	screen.rgb_conv(viewports[i].bgpixel, viewports[i].attr.bg_color);
		560
		561	return i;
		562	}
		563
		564
		565	/** Initialize framebuffer as a chardev output device
		566	*
		567	* @param addr Address of the framebuffer
		568	* @param xres Screen width in pixels
		569	* @param yres Screen height in pixels
		570	* @param visual Bits per pixel (8, 16, 24, 32)
		571	* @param scan Bytes per one scanline
		572	*
		573	*/
		574	static bool screen_init(void *addr, unsigned int xres, unsigned int yres,
		575	unsigned int scan, unsigned int visual)
		576	{
		577	unsigned int glyphsize;
		578	uint8_t *glyphs;
		579	switch (visual) {
		580	case VISUAL_INDIRECT_8:
		581	screen.rgb_conv = rgb_323;
		582	screen.pixelbytes = 1;
		583	break;
		584	case VISUAL_RGB_5_5_5:
		585	screen.rgb_conv = rgb_555;
		586	screen.pixelbytes = 2;
		587	break;
		588	case VISUAL_RGB_5_6_5:
		589	screen.rgb_conv = rgb_565;
		590	screen.pixelbytes = 2;
		591	break;
		592	case VISUAL_RGB_8_8_8:
		593	screen.rgb_conv = rgb_888;
		594	screen.pixelbytes = 3;
		595	break;
		596	case VISUAL_BGR_8_8_8:
		597	screen.rgb_conv = bgr_888;
		598	screen.pixelbytes = 3;
		599	break;
		600	case VISUAL_RGB_8_8_8_0:
		601	screen.rgb_conv = rgb_888;
		602	screen.pixelbytes = 4;
		603	break;
		604	case VISUAL_RGB_0_8_8_8:
		605	screen.rgb_conv = rgb_0888;
		606	screen.pixelbytes = 4;
		607	break;
		608	case VISUAL_BGR_0_8_8_8:
		609	screen.rgb_conv = bgr_0888;
		610	screen.pixelbytes = 4;
		611	break;
		612	default:
		613	return false;
		614	}
		615
		616	screen.fb_addr = (unsigned char *) addr;
		617	screen.xres = xres;
		618	screen.yres = yres;
		619	screen.scanline = scan;
		620
		621	screen.glyphscanline = FONT_WIDTH * screen.pixelbytes;
		622	screen.glyphbytes = screen.glyphscanline * FONT_SCANLINES;
		623
		624	glyphsize = 2 * FONT_GLYPHS * screen.glyphbytes;
		625	glyphs = (uint8_t *) malloc(glyphsize);
		626	if (!glyphs)
		627	return false;
		628
		629	memset(glyphs, 0, glyphsize);
		630	screen.glyphs = glyphs;
		631
		632	render_glyphs();
		633
		634	/* Create first viewport */
		635	vport_create(0, 0, xres, yres);
		636
		637	return true;
		638	}
		639
		640
		641	/** Draw a glyph, takes advantage of alignment.
		642	*
		643	* This version can only be used if the following conditions are met:
		644	*
		645	* - word size is divisible by pixelbytes
		646	* - cell scanline size is divisible by word size
		647	* - cell scanlines are word-aligned
		648	*
		649	* It makes use of the pre-rendered mask to process (possibly) several
		650	* pixels at once (word size / pixelbytes pixels at a time are processed)
		651	* making it very fast. Most notably this version is not applicable at 24 bits
		652	* per pixel.
		653	*
		654	* @param x x coordinate of top-left corner on screen.
		655	* @param y y coordinate of top-left corner on screen.
		656	* @param cursor Draw glyph with cursor
		657	* @param glyphs Pointer to font bitmap.
		658	* @param glyph Code of the glyph to draw.
		659	* @param fg_color Foreground color.
		660	* @param bg_color Backgroudn color.
		661	*/
		662	static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
		663	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color)
		664	{
		665	unsigned int i, yd;
		666	unsigned long fg_buf, bg_buf;
		667	unsigned long maskp, dp;
		668	unsigned long mask;
		669	unsigned int ww, d_add;
		670
		671	/*
		672	* Prepare a pair of words, one filled with foreground-color
		673	* pattern and the other filled with background-color pattern.
		674	*/
		675	for (i = 0; i < sizeof(unsigned long) / screen.pixelbytes; i++) {
		676	screen.rgb_conv(&((uint8_t )&fg_buf)[i screen.pixelbytes],
		677	fg_color);
		678	screen.rgb_conv(&((uint8_t )&bg_buf)[i screen.pixelbytes],
		679	bg_color);
		680	}
		681
		682	/* Pointer to the current position in the mask. */
		683	maskp = (unsigned long *) &glyphs[GLYPH_POS(glyph, 0, cursor)];
		684
		685	/* Pointer to the current position on the screen. */
		686	dp = (unsigned long *) &screen.fb_addr[FB_POS(x, y)];
		687
		688	/* Width of the character cell in words. */
		689	ww = FONT_WIDTH * screen.pixelbytes / sizeof(unsigned long);
		690
		691	/* Offset to add when moving to another screen scanline. */
		692	d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
		693
		694	for (yd = 0; yd < FONT_SCANLINES; yd++) {
		695	/*
		696	* Now process the cell scanline, combining foreground
		697	* and background color patters using the pre-rendered mask.
		698	*/
		699	for (i = 0; i < ww; i++) {
		700	mask = *maskp++;
		701	*dp++ = (fg_buf & mask) \| (bg_buf & ~mask);
		702	}
		703
		704	/* Move to the beginning of the next scanline of the cell. */
		705	dp = (unsigned long ) ((uint8_t ) dp + d_add);
		706	}
		707	}
		708
		709	/** Draw a glyph, fallback version.
		710	*
		711	* This version does not make use of the pre-rendered mask, it uses
		712	* the font bitmap directly. It works always, but it is slower.
		713	*
		714	* @param x x coordinate of top-left corner on screen.
		715	* @param y y coordinate of top-left corner on screen.
		716	* @param cursor Draw glyph with cursor
		717	* @param glyphs Pointer to font bitmap.
		718	* @param glyph Code of the glyph to draw.
		719	* @param fg_color Foreground color.
		720	* @param bg_color Backgroudn color.
		721	*/
		722	void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
		723	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color)
		724	{
		725	unsigned int i, j, yd;
		726	uint8_t fg_buf[4], bg_buf[4];
		727	uint8_t dp, sp;
		728	unsigned int d_add;
		729	uint8_t b;
		730
		731	/* Pre-render 1x the foreground and background color pixels. */
		732	if (cursor) {
		733	screen.rgb_conv(fg_buf, bg_color);
		734	screen.rgb_conv(bg_buf, fg_color);
		735	} else {
		736	screen.rgb_conv(fg_buf, fg_color);
		737	screen.rgb_conv(bg_buf, bg_color);
		738	}
		739
		740	/* Pointer to the current position on the screen. */
		741	dp = (uint8_t *) &screen.fb_addr[FB_POS(x, y)];
		742
		743	/* Offset to add when moving to another screen scanline. */
		744	d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
		745
		746	for (yd = 0; yd < FONT_SCANLINES; yd++) {
		747	/* Byte containing bits of the glyph scanline. */
		748	b = fb_font[glyph][yd];
		749
		750	for (i = 0; i < FONT_WIDTH; i++) {
		751	/* Choose color based on the current bit. */
		752	sp = (b & 0x80) ? fg_buf : bg_buf;
		753
		754	/* Copy the pixel. */
		755	for (j = 0; j < screen.pixelbytes; j++) {
		756	dp++ = sp++;
		757	}
		758
		759	/* Move to the next bit. */
		760	b = b << 1;
		761	}
		762
		763	/* Move to the beginning of the next scanline of the cell. */
		764	dp += d_add;
		765	}
		766	}
		767
		768	/** Draw glyph at specified position in viewport.
		769	*
		770	* @param vport Viewport identification
		771	* @param cursor Draw glyph with cursor
		772	* @param col Screen position relative to viewport
		773	* @param row Screen position relative to viewport
		774	*
		775	*/
		776	static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
		777	unsigned int row)
		778	{
		779	unsigned int x = vport->x + COL2X(col);
		780	unsigned int y = vport->y + ROW2Y(row);
		781
		782	uint32_t glyph;
		783	uint32_t fg_color;
		784	uint32_t bg_color;
		785
		786	glyph = vport->backbuf[BB_POS(vport, col, row)].glyph;
		787	fg_color = vport->backbuf[BB_POS(vport, col, row)].fg_color;
		788	bg_color = vport->backbuf[BB_POS(vport, col, row)].bg_color;
		789
		790	(*vport->dglyph)(x, y, cursor, screen.glyphs, glyph,
		791	fg_color, bg_color);
		792	}
		793
		794	/** Hide cursor if it is shown
		795	*
		796	*/
		797	static void cursor_hide(viewport_t *vport)
		798	{
		799	if ((vport->cursor_active) && (vport->cursor_shown)) {
		800	draw_vp_glyph(vport, false, vport->cur_col, vport->cur_row);
		801	vport->cursor_shown = false;
		802	}
		803	}
		804
		805
		806	/** Show cursor if cursor showing is enabled
		807	*
		808	*/
		809	static void cursor_show(viewport_t *vport)
		810	{
		811	/* Do not check for cursor_shown */
		812	if (vport->cursor_active) {
		813	draw_vp_glyph(vport, true, vport->cur_col, vport->cur_row);
		814	vport->cursor_shown = true;
		815	}
		816	}
		817
		818
		819	/** Invert cursor, if it is enabled
		820	*
		821	*/
		822	static void cursor_blink(viewport_t *vport)
		823	{
		824	if (vport->cursor_shown)
		825	cursor_hide(vport);
		826	else
		827	cursor_show(vport);
		828	}
		829
		830
		831	/** Draw character at given position relative to viewport
		832	*
		833	* @param vport Viewport identification
		834	* @param c Character to draw
		835	* @param col Screen position relative to viewport
		836	* @param row Screen position relative to viewport
		837	*
		838	*/
		839	static void draw_char(viewport_t *vport, wchar_t c, unsigned int col, unsigned int row)
		840	{
		841	bb_cell_t *bbp;
		842
		843	/* Do not hide cursor if we are going to overwrite it */
		844	if ((vport->cursor_active) && (vport->cursor_shown) &&
		845	((vport->cur_col != col) \|\| (vport->cur_row != row)))
		846	cursor_hide(vport);
		847
		848	bbp = &vport->backbuf[BB_POS(vport, col, row)];
		849	bbp->glyph = fb_font_glyph(c);
		850	bbp->fg_color = vport->attr.fg_color;
		851	bbp->bg_color = vport->attr.bg_color;
		852
		853	draw_vp_glyph(vport, false, col, row);
		854
		855	vport->cur_col = col;
		856	vport->cur_row = row;
		857
		858	vport->cur_col++;
		859	if (vport->cur_col >= vport->cols) {
		860	vport->cur_col = 0;
		861	vport->cur_row++;
		862	if (vport->cur_row >= vport->rows)
		863	vport->cur_row--;
		864	}
		865
		866	cursor_show(vport);
		867	}
		868
		869	/** Draw text data to viewport.
		870	*
		871	* @param vport Viewport id
		872	* @param data Text data.
		873	* @param x Leftmost column of the area.
		874	* @param y Topmost row of the area.
		875	* @param w Number of rows.
		876	* @param h Number of columns.
		877	*/
		878	static void draw_text_data(viewport_t vport, keyfield_t data, unsigned int x,
		879	unsigned int y, unsigned int w, unsigned int h)
		880	{
		881	unsigned int i, j;
		882	bb_cell_t *bbp;
		883	attrs_t *a;
		884	attr_rgb_t rgb;
		885
		886	for (j = 0; j < h; j++) {
		887	for (i = 0; i < w; i++) {
		888	unsigned int col = x + i;
		889	unsigned int row = y + j;
		890
		891	bbp = &vport->backbuf[BB_POS(vport, col, row)];
		892
		893	a = &data[j * w + i].attrs;
		894	rgb_from_attr(&rgb, a);
		895
		896	bbp->glyph = fb_font_glyph(data[j * w + i].character);
		897	bbp->fg_color = rgb.fg_color;
		898	bbp->bg_color = rgb.bg_color;
		899
		900	draw_vp_glyph(vport, false, col, row);
		901	}
		902	}
		903	cursor_show(vport);
		904	}
		905
		906
		907	static void putpixel_pixmap(void *data, unsigned int x, unsigned int y, uint32_t color)
		908	{
		909	int pm = ((int ) data);
		910	pixmap_t *pmap = &pixmaps[pm];
		911	unsigned int pos = (y * pmap->width + x) * screen.pixelbytes;
		912
		913	screen.rgb_conv(&pmap->data[pos], color);
		914	}
		915
		916
		917	static void putpixel(void *data, unsigned int x, unsigned int y, uint32_t color)
		918	{
		919	viewport_t vport = (viewport_t ) data;
		920	unsigned int dx = vport->x + x;
		921	unsigned int dy = vport->y + y;
		922
		923	screen.rgb_conv(&screen.fb_addr[FB_POS(dx, dy)], color);
		924	}
		925
		926
		927	/** Return first free pixmap
		928	*
		929	*/
		930	static int find_free_pixmap(void)
		931	{
		932	unsigned int i;
		933
		934	for (i = 0; i < MAX_PIXMAPS; i++)
		935	if (!pixmaps[i].data)
		936	return i;
		937
		938	return -1;
		939	}
		940
		941
		942	/** Create a new pixmap and return appropriate ID
		943	*
		944	*/
		945	static int shm2pixmap(unsigned char *shm, size_t size)
		946	{
		947	int pm;
		948	pixmap_t *pmap;
		949
		950	pm = find_free_pixmap();
		951	if (pm == -1)
		952	return ELIMIT;
		953
		954	pmap = &pixmaps[pm];
		955
		956	if (ppm_get_data(shm, size, &pmap->width, &pmap->height))
		957	return EINVAL;
		958
		959	pmap->data = malloc(pmap->width * pmap->height * screen.pixelbytes);
		960	if (!pmap->data)
		961	return ENOMEM;
		962
		963	ppm_draw(shm, size, 0, 0, pmap->width, pmap->height, putpixel_pixmap, (void *) &pm);
		964
		965	return pm;
		966	}
		967
		968
		969	/** Handle shared memory communication calls
		970	*
		971	* Protocol for drawing pixmaps:
		972	* - FB_PREPARE_SHM(client shm identification)
		973	* - IPC_M_AS_AREA_SEND
		974	* - FB_DRAW_PPM(startx, starty)
		975	* - FB_DROP_SHM
		976	*
		977	* Protocol for text drawing
		978	* - IPC_M_AS_AREA_SEND
		979	* - FB_DRAW_TEXT_DATA
		980	*
		981	* @param callid Callid of the current call
		982	* @param call Current call data
		983	* @param vp Active viewport
		984	*
		985	* @return false if the call was not handled byt this function, true otherwise
		986	*
		987	* Note: this function is not threads safe, you would have
		988	* to redefine static variables with __thread
		989	*
		990	*/
		991	static bool shm_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
		992	{
		993	static keyfield_t *interbuffer = NULL;
		994	static size_t intersize = 0;
		995
		996	static unsigned char *shm = NULL;
		997	static ipcarg_t shm_id = 0;
		998	static size_t shm_size;
		999
		1000	bool handled = true;
		1001	int retval = EOK;
		1002	viewport_t *vport = &viewports[vp];
		1003	unsigned int x;
		1004	unsigned int y;
		1005	unsigned int w;
		1006	unsigned int h;
		1007
		1008	switch (IPC_GET_METHOD(*call)) {
		1009	case IPC_M_SHARE_OUT:
		1010	/* We accept one area for data interchange */
		1011	if (IPC_GET_ARG1(*call) == shm_id) {
		1012	void dest = as_get_mappable_page(IPC_GET_ARG2(call));
		1013	shm_size = IPC_GET_ARG2(*call);
		1014	if (!ipc_answer_1(callid, EOK, (sysarg_t) dest))
		1015	shm = dest;
		1016	else
		1017	shm_id = 0;
		1018
		1019	if (shm[0] != 'P')
		1020	return false;
		1021
		1022	return true;
		1023	} else {
		1024	intersize = IPC_GET_ARG2(*call);
		1025	receive_comm_area(callid, call, (void *) &interbuffer);
		1026	}
		1027	return true;
		1028	case FB_PREPARE_SHM:
		1029	if (shm_id)
		1030	retval = EBUSY;
		1031	else
		1032	shm_id = IPC_GET_ARG1(*call);
		1033	break;
		1034
		1035	case FB_DROP_SHM:
		1036	if (shm) {
		1037	as_area_destroy(shm);
		1038	shm = NULL;
		1039	}
		1040	shm_id = 0;
		1041	break;
		1042
		1043	case FB_SHM2PIXMAP:
		1044	if (!shm) {
		1045	retval = EINVAL;
		1046	break;
		1047	}
		1048	retval = shm2pixmap(shm, shm_size);
		1049	break;
		1050	case FB_DRAW_PPM:
		1051	if (!shm) {
		1052	retval = EINVAL;
		1053	break;
		1054	}
		1055	x = IPC_GET_ARG1(*call);
		1056	y = IPC_GET_ARG2(*call);
		1057
		1058	if ((x > vport->width) \|\| (y > vport->height)) {
		1059	retval = EINVAL;
		1060	break;
		1061	}
		1062
		1063	ppm_draw(shm, shm_size, IPC_GET_ARG1(*call),
		1064	IPC_GET_ARG2(call), vport->width - x, vport->height - y, putpixel, (void ) vport);
		1065	break;
		1066	case FB_DRAW_TEXT_DATA:
		1067	x = IPC_GET_ARG1(*call);
		1068	y = IPC_GET_ARG2(*call);
		1069	w = IPC_GET_ARG3(*call);
		1070	h = IPC_GET_ARG4(*call);
		1071	if (!interbuffer) {
		1072	retval = EINVAL;
		1073	break;
		1074	}
		1075	if (x + w > vport->cols \|\| y + h > vport->rows) {
		1076	retval = EINVAL;
		1077	break;
		1078	}
		1079	if (intersize < w * h * sizeof(*interbuffer)) {
		1080	retval = EINVAL;
		1081	break;
		1082	}
		1083	draw_text_data(vport, interbuffer, x, y, w, h);
		1084	break;
		1085	default:
		1086	handled = false;
		1087	}
		1088
		1089	if (handled)
		1090	ipc_answer_0(callid, retval);
		1091	return handled;
		1092	}
		1093
		1094
		1095	static void copy_vp_to_pixmap(viewport_t vport, pixmap_t pmap)
		1096	{
		1097	unsigned int width = vport->width;
		1098	unsigned int height = vport->height;
		1099
		1100	if (width + vport->x > screen.xres)
		1101	width = screen.xres - vport->x;
		1102	if (height + vport->y > screen.yres)
		1103	height = screen.yres - vport->y;
		1104
		1105	unsigned int realwidth = pmap->width <= width ? pmap->width : width;
		1106	unsigned int realheight = pmap->height <= height ? pmap->height : height;
		1107
		1108	unsigned int srcrowsize = vport->width * screen.pixelbytes;
		1109	unsigned int realrowsize = realwidth * screen.pixelbytes;
		1110
		1111	unsigned int y;
		1112	for (y = 0; y < realheight; y++) {
		1113	unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
		1114	memcpy(pmap->data + srcrowsize * y, screen.fb_addr + tmp, realrowsize);
		1115	}
		1116	}
		1117
		1118
		1119	/** Save viewport to pixmap
		1120	*
		1121	*/
		1122	static int save_vp_to_pixmap(viewport_t *vport)
		1123	{
		1124	int pm;
		1125	pixmap_t *pmap;
		1126
		1127	pm = find_free_pixmap();
		1128	if (pm == -1)
		1129	return ELIMIT;
		1130
		1131	pmap = &pixmaps[pm];
		1132	pmap->data = malloc(screen.pixelbytes * vport->width * vport->height);
		1133	if (!pmap->data)
		1134	return ENOMEM;
		1135
		1136	pmap->width = vport->width;
		1137	pmap->height = vport->height;
		1138
		1139	copy_vp_to_pixmap(vport, pmap);
		1140
		1141	return pm;
		1142	}
		1143
		1144
		1145	/** Draw pixmap on screen
		1146	*
		1147	* @param vp Viewport to draw on
		1148	* @param pm Pixmap identifier
		1149	*
		1150	*/
		1151	static int draw_pixmap(int vp, int pm)
		1152	{
		1153	pixmap_t *pmap = &pixmaps[pm];
		1154	viewport_t *vport = &viewports[vp];
		1155
		1156	unsigned int width = vport->width;
		1157	unsigned int height = vport->height;
		1158
		1159	if (width + vport->x > screen.xres)
		1160	width = screen.xres - vport->x;
		1161	if (height + vport->y > screen.yres)
		1162	height = screen.yres - vport->y;
		1163
		1164	if (!pmap->data)
		1165	return EINVAL;
		1166
		1167	unsigned int realwidth = pmap->width <= width ? pmap->width : width;
		1168	unsigned int realheight = pmap->height <= height ? pmap->height : height;
		1169
		1170	unsigned int srcrowsize = vport->width * screen.pixelbytes;
		1171	unsigned int realrowsize = realwidth * screen.pixelbytes;
		1172
		1173	unsigned int y;
		1174	for (y = 0; y < realheight; y++) {
		1175	unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
		1176	memcpy(screen.fb_addr + tmp, pmap->data + y * srcrowsize, realrowsize);
		1177	}
		1178
		1179	return EOK;
		1180	}
		1181
		1182
		1183	/** Tick animation one step forward
		1184	*
		1185	*/
		1186	static void anims_tick(void)
		1187	{
		1188	unsigned int i;
		1189	static int counts = 0;
		1190
		1191	/* Limit redrawing */
		1192	counts = (counts + 1) % 8;
		1193	if (counts)
		1194	return;
		1195
		1196	for (i = 0; i < MAX_ANIMATIONS; i++) {
		1197	if ((!animations[i].animlen) \|\| (!animations[i].initialized) \|\|
		1198	(!animations[i].enabled))
		1199	continue;
		1200
		1201	draw_pixmap(animations[i].vp, animations[i].pixmaps[animations[i].pos]);
		1202	animations[i].pos = (animations[i].pos + 1) % animations[i].animlen;
		1203	}
		1204	}
		1205
		1206
		1207	static unsigned int pointer_x;
		1208	static unsigned int pointer_y;
		1209	static bool pointer_shown, pointer_enabled;
		1210	static int pointer_vport = -1;
		1211	static int pointer_pixmap = -1;
		1212
		1213
		1214	static void mouse_show(void)
		1215	{
		1216	int i, j;
		1217	int visibility;
		1218	int color;
		1219	int bytepos;
		1220
		1221	if ((pointer_shown) \|\| (!pointer_enabled))
		1222	return;
		1223
		1224	/* Save image under the pointer. */
		1225	if (pointer_vport == -1) {
		1226	pointer_vport = vport_create(pointer_x, pointer_y, pointer_width, pointer_height);
		1227	if (pointer_vport < 0)
		1228	return;
		1229	} else {
		1230	viewports[pointer_vport].x = pointer_x;
		1231	viewports[pointer_vport].y = pointer_y;
		1232	}
		1233
		1234	if (pointer_pixmap == -1)
		1235	pointer_pixmap = save_vp_to_pixmap(&viewports[pointer_vport]);
		1236	else
		1237	copy_vp_to_pixmap(&viewports[pointer_vport], &pixmaps[pointer_pixmap]);
		1238
		1239	/* Draw mouse pointer. */
		1240	for (i = 0; i < pointer_height; i++)
		1241	for (j = 0; j < pointer_width; j++) {
		1242	bytepos = i * ((pointer_width - 1) / 8 + 1) + j / 8;
		1243	visibility = pointer_mask_bits[bytepos] &
		1244	(1 << (j % 8));
		1245	if (visibility) {
		1246	color = pointer_bits[bytepos] &
		1247	(1 << (j % 8)) ? 0 : 0xffffff;
		1248	if (pointer_x + j < screen.xres && pointer_y +
		1249	i < screen.yres)
		1250	putpixel(&viewports[0], pointer_x + j,
		1251	pointer_y + i, color);
		1252	}
		1253	}
		1254	pointer_shown = 1;
		1255	}
		1256
		1257
		1258	static void mouse_hide(void)
		1259	{
		1260	/* Restore image under the pointer. */
		1261	if (pointer_shown) {
		1262	draw_pixmap(pointer_vport, pointer_pixmap);
		1263	pointer_shown = 0;
		1264	}
		1265	}
		1266
		1267
		1268	static void mouse_move(unsigned int x, unsigned int y)
		1269	{
		1270	mouse_hide();
		1271	pointer_x = x;
		1272	pointer_y = y;
		1273	mouse_show();
		1274	}
		1275
		1276
		1277	static int anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
		1278	{
		1279	bool handled = true;
		1280	int retval = EOK;
		1281	int i, nvp;
		1282	int newval;
		1283
		1284	switch (IPC_GET_METHOD(*call)) {
		1285	case FB_ANIM_CREATE:
		1286	nvp = IPC_GET_ARG1(*call);
		1287	if (nvp == -1)
		1288	nvp = vp;
		1289	if (nvp >= MAX_VIEWPORTS \|\| nvp < 0 \|\|
		1290	!viewports[nvp].initialized) {
		1291	retval = EINVAL;
		1292	break;
		1293	}
		1294	for (i = 0; i < MAX_ANIMATIONS; i++) {
		1295	if (!animations[i].initialized)
		1296	break;
		1297	}
		1298	if (i == MAX_ANIMATIONS) {
		1299	retval = ELIMIT;
		1300	break;
		1301	}
		1302	animations[i].initialized = 1;
		1303	animations[i].animlen = 0;
		1304	animations[i].pos = 0;
		1305	animations[i].enabled = 0;
		1306	animations[i].vp = nvp;
		1307	retval = i;
		1308	break;
		1309	case FB_ANIM_DROP:
		1310	i = IPC_GET_ARG1(*call);
		1311	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1312	retval = EINVAL;
		1313	break;
		1314	}
		1315	animations[i].initialized = 0;
		1316	break;
		1317	case FB_ANIM_ADDPIXMAP:
		1318	i = IPC_GET_ARG1(*call);
		1319	if (i >= MAX_ANIMATIONS \|\| i < 0 \|\|
		1320	!animations[i].initialized) {
		1321	retval = EINVAL;
		1322	break;
		1323	}
		1324	if (animations[i].animlen == MAX_ANIM_LEN) {
		1325	retval = ELIMIT;
		1326	break;
		1327	}
		1328	newval = IPC_GET_ARG2(*call);
		1329	if (newval < 0 \|\| newval > MAX_PIXMAPS \|\|
		1330	!pixmaps[newval].data) {
		1331	retval = EINVAL;
		1332	break;
		1333	}
		1334	animations[i].pixmaps[animations[i].animlen++] = newval;
		1335	break;
		1336	case FB_ANIM_CHGVP:
		1337	i = IPC_GET_ARG1(*call);
		1338	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1339	retval = EINVAL;
		1340	break;
		1341	}
		1342	nvp = IPC_GET_ARG2(*call);
		1343	if (nvp == -1)
		1344	nvp = vp;
		1345	if (nvp >= MAX_VIEWPORTS \|\| nvp < 0 \|\|
		1346	!viewports[nvp].initialized) {
		1347	retval = EINVAL;
		1348	break;
		1349	}
		1350	animations[i].vp = nvp;
		1351	break;
		1352	case FB_ANIM_START:
		1353	case FB_ANIM_STOP:
		1354	i = IPC_GET_ARG1(*call);
		1355	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1356	retval = EINVAL;
		1357	break;
		1358	}
		1359	newval = (IPC_GET_METHOD(*call) == FB_ANIM_START);
		1360	if (newval ^ animations[i].enabled) {
		1361	animations[i].enabled = newval;
		1362	anims_enabled += newval ? 1 : -1;
		1363	}
		1364	break;
		1365	default:
		1366	handled = 0;
		1367	}
		1368	if (handled)
		1369	ipc_answer_0(callid, retval);
		1370	return handled;
		1371	}
		1372
		1373
		1374	/** Handler for messages concerning pixmap handling
		1375	*
		1376	*/
		1377	static int pixmap_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
		1378	{
		1379	bool handled = true;
		1380	int retval = EOK;
		1381	int i, nvp;
		1382
		1383	switch (IPC_GET_METHOD(*call)) {
		1384	case FB_VP_DRAW_PIXMAP:
		1385	nvp = IPC_GET_ARG1(*call);
		1386	if (nvp == -1)
		1387	nvp = vp;
		1388	if (nvp < 0 \|\| nvp >= MAX_VIEWPORTS \|\|
		1389	!viewports[nvp].initialized) {
		1390	retval = EINVAL;
		1391	break;
		1392	}
		1393	i = IPC_GET_ARG2(*call);
		1394	retval = draw_pixmap(nvp, i);
		1395	break;
		1396	case FB_VP2PIXMAP:
		1397	nvp = IPC_GET_ARG1(*call);
		1398	if (nvp == -1)
		1399	nvp = vp;
		1400	if (nvp < 0 \|\| nvp >= MAX_VIEWPORTS \|\|
		1401	!viewports[nvp].initialized)
		1402	retval = EINVAL;
		1403	else
		1404	retval = save_vp_to_pixmap(&viewports[nvp]);
		1405	break;
		1406	case FB_DROP_PIXMAP:
		1407	i = IPC_GET_ARG1(*call);
		1408	if (i >= MAX_PIXMAPS) {
		1409	retval = EINVAL;
		1410	break;
		1411	}
		1412	if (pixmaps[i].data) {
		1413	free(pixmaps[i].data);
		1414	pixmaps[i].data = NULL;
		1415	}
		1416	break;
		1417	default:
		1418	handled = 0;
		1419	}
		1420
		1421	if (handled)
		1422	ipc_answer_0(callid, retval);
		1423	return handled;
		1424
		1425	}
		1426
		1427	static int rgb_from_style(attr_rgb_t *rgb, int style)
		1428	{
		1429	switch (style) {
		1430	case STYLE_NORMAL:
		1431	rgb->fg_color = color_table[COLOR_BLACK];
		1432	rgb->bg_color = color_table[COLOR_WHITE];
		1433	break;
		1434	case STYLE_EMPHASIS:
		1435	rgb->fg_color = color_table[COLOR_RED];
		1436	rgb->bg_color = color_table[COLOR_WHITE];
		1437	break;
		1438	default:
		1439	return EINVAL;
		1440	}
		1441
		1442	return EOK;
		1443	}
		1444
		1445	static int rgb_from_idx(attr_rgb_t *rgb, ipcarg_t fg_color,
		1446	ipcarg_t bg_color, ipcarg_t flags)
		1447	{
		1448	fg_color = (fg_color & 7) \| ((flags & CATTR_BRIGHT) ? 8 : 0);
		1449	bg_color = (bg_color & 7) \| ((flags & CATTR_BRIGHT) ? 8 : 0);
		1450
		1451	rgb->fg_color = color_table[fg_color];
		1452	rgb->bg_color = color_table[bg_color];
		1453
		1454	return EOK;
		1455	}
		1456
		1457	static int rgb_from_attr(attr_rgb_t rgb, const attrs_t a)
		1458	{
		1459	int rc;
		1460
		1461	switch (a->t) {
		1462	case at_style:
		1463	rc = rgb_from_style(rgb, a->a.s.style);
		1464	break;
		1465	case at_idx:
		1466	rc = rgb_from_idx(rgb, a->a.i.fg_color,
		1467	a->a.i.bg_color, a->a.i.flags);
		1468	break;
		1469	case at_rgb:
		1470	*rgb = a->a.r;
		1471	rc = EOK;
		1472	break;
		1473	}
		1474
		1475	return rc;
		1476	}
		1477
		1478	static int fb_set_style(viewport_t *vport, ipcarg_t style)
		1479	{
		1480	return rgb_from_style(&vport->attr, (int) style);
		1481	}
		1482
		1483	static int fb_set_color(viewport_t *vport, ipcarg_t fg_color,
		1484	ipcarg_t bg_color, ipcarg_t flags)
		1485	{
		1486	return rgb_from_idx(&vport->attr, fg_color, bg_color, flags);
		1487	}
		1488
		1489	/** Function for handling connections to FB
		1490	*
		1491	*/
		1492	static void fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
		1493	{
		1494	unsigned int vp = 0;
		1495	viewport_t *vport = &viewports[vp];
		1496
		1497	if (client_connected) {
		1498	ipc_answer_0(iid, ELIMIT);
		1499	return;
		1500	}
		1501
		1502	/* Accept connection */
		1503	client_connected = true;
		1504	ipc_answer_0(iid, EOK);
		1505
		1506	while (true) {
		1507	ipc_callid_t callid;
		1508	ipc_call_t call;
		1509	int retval;
		1510	unsigned int i;
		1511	int scroll;
		1512	wchar_t ch;
		1513	unsigned int row, col;
		1514
		1515	if ((vport->cursor_active) \|\| (anims_enabled))
		1516	callid = async_get_call_timeout(&call, 250000);
		1517	else
		1518	callid = async_get_call(&call);
		1519
		1520	mouse_hide();
		1521	if (!callid) {
		1522	cursor_blink(vport);
		1523	anims_tick();
		1524	mouse_show();
		1525	continue;
		1526	}
		1527
		1528	if (shm_handle(callid, &call, vp))
		1529	continue;
		1530
		1531	if (pixmap_handle(callid, &call, vp))
		1532	continue;
		1533
		1534	if (anim_handle(callid, &call, vp))
		1535	continue;
		1536
		1537	switch (IPC_GET_METHOD(call)) {
		1538	case IPC_M_PHONE_HUNGUP:
		1539	client_connected = false;
		1540
		1541	/* Cleanup other viewports */
		1542	for (i = 1; i < MAX_VIEWPORTS; i++)
		1543	vport->initialized = false;
		1544
		1545	/* Exit thread */
		1546	return;
		1547
		1548	case FB_PUTCHAR:
		1549	ch = IPC_GET_ARG1(call);
		1550	row = IPC_GET_ARG2(call);
		1551	col = IPC_GET_ARG3(call);
		1552
		1553	if ((col >= vport->cols) \|\| (row >= vport->rows)) {
		1554	retval = EINVAL;
		1555	break;
		1556	}
		1557	ipc_answer_0(callid, EOK);
		1558
		1559	draw_char(vport, ch, col, row);
		1560
		1561	/* Message already answered */
		1562	continue;
		1563	case FB_CLEAR:
		1564	vport_clear(vport);
		1565	cursor_show(vport);
		1566	retval = EOK;
		1567	break;
		1568	case FB_CURSOR_GOTO:
		1569	row = IPC_GET_ARG1(call);
		1570	col = IPC_GET_ARG2(call);
		1571
		1572	if ((col >= vport->cols) \|\| (row >= vport->rows)) {
		1573	retval = EINVAL;
		1574	break;
		1575	}
		1576	retval = EOK;
		1577
		1578	cursor_hide(vport);
		1579	vport->cur_col = col;
		1580	vport->cur_row = row;
		1581	cursor_show(vport);
		1582	break;
		1583	case FB_CURSOR_VISIBILITY:
		1584	cursor_hide(vport);
		1585	vport->cursor_active = IPC_GET_ARG1(call);
		1586	cursor_show(vport);
		1587	retval = EOK;
		1588	break;
		1589	case FB_GET_CSIZE:
		1590	ipc_answer_2(callid, EOK, vport->rows, vport->cols);
		1591	continue;
		1592	case FB_SCROLL:
		1593	scroll = IPC_GET_ARG1(call);
		1594	if ((scroll > (int) vport->rows) \|\| (scroll < (-(int) vport->rows))) {
		1595	retval = EINVAL;
		1596	break;
		1597	}
		1598	cursor_hide(vport);
		1599	vport_scroll(vport, scroll);
		1600	cursor_show(vport);
		1601	retval = EOK;
		1602	break;
		1603	case FB_VIEWPORT_SWITCH:
		1604	i = IPC_GET_ARG1(call);
		1605	if (i >= MAX_VIEWPORTS) {
		1606	retval = EINVAL;
		1607	break;
		1608	}
		1609	if (!viewports[i].initialized) {
		1610	retval = EADDRNOTAVAIL;
		1611	break;
		1612	}
		1613	cursor_hide(vport);
		1614	vp = i;
		1615	vport = &viewports[vp];
		1616	cursor_show(vport);
		1617	retval = EOK;
		1618	break;
		1619	case FB_VIEWPORT_CREATE:
		1620	retval = vport_create(IPC_GET_ARG1(call) >> 16,
		1621	IPC_GET_ARG1(call) & 0xffff,
		1622	IPC_GET_ARG2(call) >> 16,
		1623	IPC_GET_ARG2(call) & 0xffff);
		1624	break;
		1625	case FB_VIEWPORT_DELETE:
		1626	i = IPC_GET_ARG1(call);
		1627	if (i >= MAX_VIEWPORTS) {
		1628	retval = EINVAL;
		1629	break;
		1630	}
		1631	if (!viewports[i].initialized) {
		1632	retval = EADDRNOTAVAIL;
		1633	break;
		1634	}
		1635	viewports[i].initialized = false;
		1636	if (viewports[i].bgpixel)
		1637	free(viewports[i].bgpixel);
		1638	if (viewports[i].backbuf)
		1639	free(viewports[i].backbuf);
		1640	retval = EOK;
		1641	break;
		1642	case FB_SET_STYLE:
		1643	retval = fb_set_style(vport, IPC_GET_ARG1(call));
		1644	break;
		1645	case FB_SET_COLOR:
		1646	retval = fb_set_color(vport, IPC_GET_ARG1(call),
		1647	IPC_GET_ARG2(call), IPC_GET_ARG3(call));
		1648	break;
		1649	case FB_SET_RGB_COLOR:
		1650	vport->attr.fg_color = IPC_GET_ARG1(call);
		1651	vport->attr.bg_color = IPC_GET_ARG2(call);
		1652	retval = EOK;
		1653	break;
		1654	case FB_GET_RESOLUTION:
		1655	ipc_answer_2(callid, EOK, screen.xres, screen.yres);
		1656	continue;
		1657	case FB_POINTER_MOVE:
		1658	pointer_enabled = true;
		1659	mouse_move(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
		1660	retval = EOK;
		1661	break;
		1662	default:
		1663	retval = ENOENT;
		1664	}
		1665	ipc_answer_0(callid, retval);
		1666	}
		1667	}
		1668
		1669	/** Initialization of framebuffer
		1670	*
		1671	*/
		1672	int fb_init(void)
		1673	{
		1674	async_set_client_connection(fb_client_connection);
		1675
		1676	void fb_ph_addr = (void ) sysinfo_value("fb.address.physical");
		1677	unsigned int fb_offset = sysinfo_value("fb.offset");
		1678	unsigned int fb_width = sysinfo_value("fb.width");
		1679	unsigned int fb_height = sysinfo_value("fb.height");
		1680	unsigned int fb_scanline = sysinfo_value("fb.scanline");
		1681	unsigned int fb_visual = sysinfo_value("fb.visual");
		1682
		1683	unsigned int fbsize = fb_scanline * fb_height;
		1684	void *fb_addr = as_get_mappable_page(fbsize);
		1685
		1686	if (physmem_map(fb_ph_addr + fb_offset, fb_addr,
		1687	ALIGN_UP(fbsize, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ \| AS_AREA_WRITE) != 0)
		1688	return -1;
		1689
		1690	if (screen_init(fb_addr, fb_width, fb_height, fb_scanline, fb_visual))
		1691	return 0;
		1692
		1693	return -1;
		1694	}
		1695
		1696	/**
		1697	* @}
		1698	*/

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(root)//branches/dd/uspace/srv/fb/fb.c – Rev 4419