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
4420	trochtova	33	* @brief HelenOS graphical framebuffer.
4419	trochtova	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
4420	trochtova	71	#define GLYPH_UNAVAIL '?'
4419	trochtova	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
4420	trochtova	81	/** Function to render a bit mask. */
		82	typedef void (mask_conv_t)(void , bool);
		83
4419	trochtova	84	/** Function to draw a glyph. */
		85	typedef void (*dg_t)(unsigned int x, unsigned int y, bool cursor,
		86	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
		87
		88	struct {
		89	uint8_t *fb_addr;
		90
		91	unsigned int xres;
		92	unsigned int yres;
		93
		94	unsigned int scanline;
		95	unsigned int glyphscanline;
		96
		97	unsigned int pixelbytes;
		98	unsigned int glyphbytes;
4420	trochtova	99
4419	trochtova	100	/** Pre-rendered mask for rendering glyphs. Specific for the visual. */
		101	uint8_t *glyphs;
		102
		103	rgb_conv_t rgb_conv;
4420	trochtova	104	mask_conv_t mask_conv;
4419	trochtova	105	} screen;
		106
		107	/** Backbuffer character cell. */
		108	typedef struct {
		109	uint32_t glyph;
		110	uint32_t fg_color;
		111	uint32_t bg_color;
		112	} bb_cell_t;
		113
		114	typedef struct {
		115	bool initialized;
		116	unsigned int x;
		117	unsigned int y;
		118	unsigned int width;
		119	unsigned int height;
		120
		121	/* Text support in window */
		122	unsigned int cols;
		123	unsigned int rows;
		124
		125	/*
		126	* Style and glyphs for text printing
		127	*/
4420	trochtova	128
4419	trochtova	129	/** Current attributes. */
		130	attr_rgb_t attr;
4420	trochtova	131
4419	trochtova	132	uint8_t *bgpixel;
4420	trochtova	133
4419	trochtova	134	/**
		135	* Glyph drawing function for this viewport. Different viewports
		136	* might use different drawing functions depending on whether their
		137	* scanlines are aligned on a word boundary.
		138	*/
		139	dg_t dglyph;
		140
		141	/* Auto-cursor position */
		142	bool cursor_active;
		143	unsigned int cur_col;
		144	unsigned int cur_row;
		145	bool cursor_shown;
		146
		147	/* Back buffer */
		148	bb_cell_t *backbuf;
		149	unsigned int bbsize;
		150	} viewport_t;
		151
		152	typedef struct {
		153	bool initialized;
		154	bool enabled;
		155	unsigned int vp;
		156
		157	unsigned int pos;
		158	unsigned int animlen;
		159	unsigned int pixmaps[MAX_ANIM_LEN];
		160	} animation_t;
		161
		162	static animation_t animations[MAX_ANIMATIONS];
		163	static bool anims_enabled;
		164
		165	typedef struct {
		166	unsigned int width;
		167	unsigned int height;
		168	uint8_t *data;
		169	} pixmap_t;
		170
		171	static pixmap_t pixmaps[MAX_PIXMAPS];
		172	static viewport_t viewports[128];
		173
		174	static bool client_connected = false; /*< Allow only 1 connection /
		175
		176	static uint32_t color_table[16] = {
4420	trochtova	177	[COLOR_BLACK] = 0x000000,
		178	[COLOR_BLUE] = 0x0000f0,
		179	[COLOR_GREEN] = 0x00f000,
		180	[COLOR_CYAN] = 0x00f0f0,
		181	[COLOR_RED] = 0xf00000,
		182	[COLOR_MAGENTA] = 0xf000f0,
		183	[COLOR_YELLOW] = 0xf0f000,
		184	[COLOR_WHITE] = 0xf0f0f0,
		185
		186	[8 + COLOR_BLACK] = 0x000000,
		187	[8 + COLOR_BLUE] = 0x0000ff,
		188	[8 + COLOR_GREEN] = 0x00ff00,
		189	[8 + COLOR_CYAN] = 0x00ffff,
		190	[8 + COLOR_RED] = 0xff0000,
		191	[8 + COLOR_MAGENTA] = 0xff00ff,
		192	[8 + COLOR_YELLOW] = 0xffff00,
		193	[8 + COLOR_WHITE] = 0xffffff,
4419	trochtova	194	};
		195
		196	static int rgb_from_attr(attr_rgb_t rgb, const attrs_t a);
		197	static int rgb_from_style(attr_rgb_t *rgb, int style);
		198	static int rgb_from_idx(attr_rgb_t *rgb, ipcarg_t fg_color,
		199	ipcarg_t bg_color, ipcarg_t flags);
		200
		201	static int fb_set_color(viewport_t *vport, ipcarg_t fg_color,
		202	ipcarg_t bg_color, ipcarg_t attr);
		203
		204	static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
		205	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
		206	static void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
		207	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
		208
		209	static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
		210	unsigned int row);
		211
		212
		213	#define RED(x, bits) ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
		214	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
		215	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
		216
		217	#define COL2X(col) ((col) * FONT_WIDTH)
		218	#define ROW2Y(row) ((row) * FONT_SCANLINES)
		219
		220	#define X2COL(x) ((x) / FONT_WIDTH)
		221	#define Y2ROW(y) ((y) / FONT_SCANLINES)
		222
		223	#define FB_POS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)
		224	#define BB_POS(vport, col, row) ((row) * vport->cols + (col))
		225	#define GLYPH_POS(glyph, y, cursor) (((glyph) + (cursor) * FONT_GLYPHS) * screen.glyphbytes + (y) * screen.glyphscanline)
		226
		227
		228	/** ARGB 8:8:8:8 conversion
		229	*
		230	*/
		231	static void rgb_0888(void *dst, uint32_t rgb)
		232	{
4420	trochtova	233	((uint32_t ) dst) = rgb & 0x00ffffff;
4419	trochtova	234	}
		235
4420	trochtova	236	static void mask_0888(void *dst, bool mask)
		237	{
		238	((uint32_t ) dst) = (mask ? 0x00ffffff : 0);
		239	}
4419	trochtova	240
4420	trochtova	241
4419	trochtova	242	/** ABGR 8:8:8:8 conversion
		243	*
		244	*/
		245	static void bgr_0888(void *dst, uint32_t rgb)
		246	{
		247	((uint32_t ) dst)
		248	= (BLUE(rgb, 8) << 16) \| (GREEN(rgb, 8) << 8) \| RED(rgb, 8);
		249	}
		250
		251
		252	/** RGB 8:8:8 conversion
		253	*
		254	*/
		255	static void rgb_888(void *dst, uint32_t rgb)
		256	{
		257	((uint8_t *) dst)[0] = BLUE(rgb, 8);
		258	((uint8_t *) dst)[1] = GREEN(rgb, 8);
		259	((uint8_t *) dst)[2] = RED(rgb, 8);
		260	}
		261
4420	trochtova	262	static void mask_888(void *dst, bool mask)
		263	{
		264	if (mask) {
		265	((uint8_t *) dst)[0] = 0xff;
		266	((uint8_t *) dst)[1] = 0xff;
		267	((uint8_t *) dst)[2] = 0xff;
		268	} else {
		269	((uint8_t *) dst)[0] = 0;
		270	((uint8_t *) dst)[1] = 0;
		271	((uint8_t *) dst)[2] = 0;
		272	}
		273	}
4419	trochtova	274
4420	trochtova	275
4419	trochtova	276	/** BGR 8:8:8 conversion
		277	*
		278	*/
		279	static void bgr_888(void *dst, uint32_t rgb)
		280	{
		281	((uint8_t *) dst)[0] = RED(rgb, 8);
		282	((uint8_t *) dst)[1] = GREEN(rgb, 8);
		283	((uint8_t *) dst)[2] = BLUE(rgb, 8);
		284	}
		285
		286
		287	/** RGB 5:5:5 conversion
		288	*
		289	*/
		290	static void rgb_555(void *dst, uint32_t rgb)
		291	{
		292	((uint16_t ) dst)
		293	= (RED(rgb, 5) << 10) \| (GREEN(rgb, 5) << 5) \| BLUE(rgb, 5);
		294	}
		295
4420	trochtova	296	static void mask_555(void *dst, bool mask)
		297	{
		298	((uint16_t ) dst) = (mask ? 0x7fff : 0);
		299	}
4419	trochtova	300
4420	trochtova	301
4419	trochtova	302	/** RGB 5:6:5 conversion
		303	*
		304	*/
		305	static void rgb_565(void *dst, uint32_t rgb)
		306	{
		307	((uint16_t ) dst)
		308	= (RED(rgb, 5) << 11) \| (GREEN(rgb, 6) << 5) \| BLUE(rgb, 5);
		309	}
		310
4420	trochtova	311	static void mask_565(void *dst, bool mask)
		312	{
		313	((uint16_t ) dst) = (mask ? 0xffff : 0);
		314	}
4419	trochtova	315
4420	trochtova	316
4419	trochtova	317	/** RGB 3:2:3
		318	*
		319	*/
		320	static void rgb_323(void *dst, uint32_t rgb)
		321	{
		322	((uint8_t ) dst)
		323	= ~((RED(rgb, 3) << 5) \| (GREEN(rgb, 2) << 3) \| BLUE(rgb, 3));
		324	}
		325
4420	trochtova	326	static void mask_323(void *dst, bool mask)
		327	{
		328	((uint8_t ) dst) = (mask ? 0xff : 0);
		329	}
		330
4419	trochtova	331	/** Draw a filled rectangle.
		332	*
		333	* @note Need real implementation that does not access VRAM twice.
4420	trochtova	334	*
4419	trochtova	335	*/
		336	static void draw_filled_rect(unsigned int x0, unsigned int y0, unsigned int x1,
		337	unsigned int y1, uint32_t color)
		338	{
4420	trochtova	339	unsigned int x;
		340	unsigned int y;
4419	trochtova	341	unsigned int copy_bytes;
4420	trochtova	342
		343	uint8_t *sp;
		344	uint8_t *dp;
4419	trochtova	345	uint8_t cbuf[4];
4420	trochtova	346
		347	if ((y0 >= y1) \|\| (x0 >= x1))
		348	return;
		349
4419	trochtova	350	screen.rgb_conv(cbuf, color);
4420	trochtova	351
4419	trochtova	352	sp = &screen.fb_addr[FB_POS(x0, y0)];
		353	dp = sp;
4420	trochtova	354
4419	trochtova	355	/* Draw the first line. */
		356	for (x = x0; x < x1; x++) {
		357	memcpy(dp, cbuf, screen.pixelbytes);
		358	dp += screen.pixelbytes;
		359	}
4420	trochtova	360
4419	trochtova	361	dp = sp + screen.scanline;
		362	copy_bytes = (x1 - x0) * screen.pixelbytes;
4420	trochtova	363
4419	trochtova	364	/* Draw the remaining lines by copying. */
		365	for (y = y0 + 1; y < y1; y++) {
		366	memcpy(dp, sp, copy_bytes);
		367	dp += screen.scanline;
		368	}
		369	}
		370
		371	/** Redraw viewport.
		372	*
		373	* @param vport Viewport to redraw
		374	*
		375	*/
		376	static void vport_redraw(viewport_t *vport)
		377	{
4420	trochtova	378	unsigned int row;
		379	unsigned int col;
		380
4419	trochtova	381	for (row = 0; row < vport->rows; row++) {
		382	for (col = 0; col < vport->cols; col++) {
		383	draw_vp_glyph(vport, false, col, row);
		384	}
		385	}
4420	trochtova	386
4419	trochtova	387	if (COL2X(vport->cols) < vport->width) {
		388	draw_filled_rect(
		389	vport->x + COL2X(vport->cols), vport->y,
		390	vport->x + vport->width, vport->y + vport->height,
		391	vport->attr.bg_color);
		392	}
4420	trochtova	393
4419	trochtova	394	if (ROW2Y(vport->rows) < vport->height) {
		395	draw_filled_rect(
		396	vport->x, vport->y + ROW2Y(vport->rows),
		397	vport->x + vport->width, vport->y + vport->height,
		398	vport->attr.bg_color);
		399	}
		400	}
		401
		402	static void backbuf_clear(bb_cell_t *backbuf, size_t len, uint32_t fg_color,
		403	uint32_t bg_color)
		404	{
4420	trochtova	405	size_t i;
		406
4419	trochtova	407	for (i = 0; i < len; i++) {
		408	backbuf[i].glyph = 0;
		409	backbuf[i].fg_color = fg_color;
		410	backbuf[i].bg_color = bg_color;
		411	}
		412	}
		413
		414	/** Clear viewport.
		415	*
		416	* @param vport Viewport to clear
		417	*
		418	*/
		419	static void vport_clear(viewport_t *vport)
		420	{
		421	backbuf_clear(vport->backbuf, vport->cols * vport->rows,
		422	vport->attr.fg_color, vport->attr.bg_color);
		423	vport_redraw(vport);
		424	}
		425
		426	/** Scroll viewport by the specified number of lines.
		427	*
		428	* @param vport Viewport to scroll
		429	* @param lines Number of lines to scroll
		430	*
		431	*/
		432	static void vport_scroll(viewport_t *vport, int lines)
		433	{
4420	trochtova	434	unsigned int row;
		435	unsigned int col;
		436	unsigned int x;
		437	unsigned int y;
4419	trochtova	438	uint32_t glyph;
		439	uint32_t fg_color;
		440	uint32_t bg_color;
4420	trochtova	441	bb_cell_t *bbp;
		442	bb_cell_t *xbp;
		443
4419	trochtova	444	/*
		445	* Redraw.
		446	*/
4420	trochtova	447
4419	trochtova	448	y = vport->y;
		449	for (row = 0; row < vport->rows; row++) {
		450	x = vport->x;
		451	for (col = 0; col < vport->cols; col++) {
		452	if ((row + lines >= 0) && (row + lines < vport->rows)) {
		453	xbp = &vport->backbuf[BB_POS(vport, col, row + lines)];
		454	bbp = &vport->backbuf[BB_POS(vport, col, row)];
4420	trochtova	455
4419	trochtova	456	glyph = xbp->glyph;
		457	fg_color = xbp->fg_color;
		458	bg_color = xbp->bg_color;
4420	trochtova	459
		460	if ((bbp->glyph == glyph)
		461	&& (bbp->fg_color == xbp->fg_color)
		462	&& (bbp->bg_color == xbp->bg_color)) {
4419	trochtova	463	x += FONT_WIDTH;
		464	continue;
		465	}
		466	} else {
		467	glyph = 0;
		468	fg_color = vport->attr.fg_color;
		469	bg_color = vport->attr.bg_color;
		470	}
4420	trochtova	471
4419	trochtova	472	(*vport->dglyph)(x, y, false, screen.glyphs, glyph,
		473	fg_color, bg_color);
		474	x += FONT_WIDTH;
		475	}
		476	y += FONT_SCANLINES;
		477	}
4420	trochtova	478
4419	trochtova	479	/*
		480	* Scroll backbuffer.
		481	*/
4420	trochtova	482
4419	trochtova	483	if (lines > 0) {
		484	memmove(vport->backbuf, vport->backbuf + vport->cols * lines,
		485	vport->cols * (vport->rows - lines) * sizeof(bb_cell_t));
		486	backbuf_clear(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)],
		487	vport->cols * lines, vport->attr.fg_color, vport->attr.bg_color);
		488	} else {
		489	memmove(vport->backbuf - vport->cols * lines, vport->backbuf,
		490	vport->cols * (vport->rows + lines) * sizeof(bb_cell_t));
		491	backbuf_clear(vport->backbuf, - vport->cols * lines,
		492	vport->attr.fg_color, vport->attr.bg_color);
		493	}
		494	}
		495
		496	/** Render glyphs
		497	*
		498	* Convert glyphs from device independent font
		499	* description to current visual representation.
4420	trochtova	500	*
4419	trochtova	501	*/
		502	static void render_glyphs(void)
		503	{
		504	unsigned int glyph;
4420	trochtova	505
4419	trochtova	506	for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
		507	unsigned int y;
4420	trochtova	508
4419	trochtova	509	for (y = 0; y < FONT_SCANLINES; y++) {
		510	unsigned int x;
4420	trochtova	511
4419	trochtova	512	for (x = 0; x < FONT_WIDTH; x++) {
4420	trochtova	513	screen.mask_conv(&screen.glyphs[GLYPH_POS(glyph, y, false) + x * screen.pixelbytes],
		514	(fb_font[glyph][y] & (1 << (7 - x))) ? true : false);
		515
		516	screen.mask_conv(&screen.glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes],
		517	(fb_font[glyph][y] & (1 << (7 - x))) ? false : true);
4419	trochtova	518	}
		519	}
		520	}
		521	}
		522
		523	/** Create new viewport
		524	*
		525	* @param x Origin of the viewport (x).
		526	* @param y Origin of the viewport (y).
		527	* @param width Width of the viewport.
		528	* @param height Height of the viewport.
		529	*
		530	* @return New viewport number.
		531	*
		532	*/
		533	static int vport_create(unsigned int x, unsigned int y,
		534	unsigned int width, unsigned int height)
		535	{
		536	unsigned int i;
		537
		538	for (i = 0; i < MAX_VIEWPORTS; i++) {
		539	if (!viewports[i].initialized)
		540	break;
		541	}
4420	trochtova	542
4419	trochtova	543	if (i == MAX_VIEWPORTS)
		544	return ELIMIT;
		545
		546	unsigned int cols = width / FONT_WIDTH;
		547	unsigned int rows = height / FONT_SCANLINES;
		548	unsigned int bbsize = cols * rows * sizeof(bb_cell_t);
		549	unsigned int word_size = sizeof(unsigned long);
		550
		551	bb_cell_t backbuf = (bb_cell_t ) malloc(bbsize);
		552	if (!backbuf)
		553	return ENOMEM;
		554
		555	uint8_t bgpixel = (uint8_t ) malloc(screen.pixelbytes);
		556	if (!bgpixel) {
		557	free(backbuf);
		558	return ENOMEM;
		559	}
4420	trochtova	560
4419	trochtova	561	backbuf_clear(backbuf, cols * rows, DEFAULT_FGCOLOR, DEFAULT_BGCOLOR);
		562	memset(bgpixel, 0, screen.pixelbytes);
		563
		564	viewports[i].x = x;
		565	viewports[i].y = y;
		566	viewports[i].width = width;
		567	viewports[i].height = height;
		568
		569	viewports[i].cols = cols;
		570	viewports[i].rows = rows;
		571
		572	viewports[i].attr.bg_color = DEFAULT_BGCOLOR;
		573	viewports[i].attr.fg_color = DEFAULT_FGCOLOR;
		574
		575	viewports[i].bgpixel = bgpixel;
4420	trochtova	576
4419	trochtova	577	/*
4420	trochtova	578	* Conditions necessary to select aligned version:
		579	* - word size is divisible by pixelbytes
		580	* - cell scanline size is divisible by word size
		581	* - cell scanlines are word-aligned
4419	trochtova	582	*
		583	*/
4420	trochtova	584	if (((word_size % screen.pixelbytes) == 0)
		585	&& ((FONT_WIDTH * screen.pixelbytes) % word_size == 0)
		586	&& ((x * screen.pixelbytes) % word_size == 0)
		587	&& (screen.scanline % word_size == 0)) {
4419	trochtova	588	viewports[i].dglyph = draw_glyph_aligned;
		589	} else {
		590	viewports[i].dglyph = draw_glyph_fallback;
		591	}
4420	trochtova	592
4419	trochtova	593	viewports[i].cur_col = 0;
		594	viewports[i].cur_row = 0;
		595	viewports[i].cursor_active = false;
		596	viewports[i].cursor_shown = false;
		597
		598	viewports[i].bbsize = bbsize;
		599	viewports[i].backbuf = backbuf;
		600
		601	viewports[i].initialized = true;
		602
		603	screen.rgb_conv(viewports[i].bgpixel, viewports[i].attr.bg_color);
		604
		605	return i;
		606	}
		607
		608
		609	/** Initialize framebuffer as a chardev output device
		610	*
		611	* @param addr Address of the framebuffer
		612	* @param xres Screen width in pixels
		613	* @param yres Screen height in pixels
		614	* @param visual Bits per pixel (8, 16, 24, 32)
		615	* @param scan Bytes per one scanline
		616	*
		617	*/
		618	static bool screen_init(void *addr, unsigned int xres, unsigned int yres,
		619	unsigned int scan, unsigned int visual)
		620	{
4420	trochtova	621
		622
4419	trochtova	623	switch (visual) {
		624	case VISUAL_INDIRECT_8:
		625	screen.rgb_conv = rgb_323;
4420	trochtova	626	screen.mask_conv = mask_323;
4419	trochtova	627	screen.pixelbytes = 1;
		628	break;
		629	case VISUAL_RGB_5_5_5:
		630	screen.rgb_conv = rgb_555;
4420	trochtova	631	screen.mask_conv = mask_555;
4419	trochtova	632	screen.pixelbytes = 2;
		633	break;
		634	case VISUAL_RGB_5_6_5:
		635	screen.rgb_conv = rgb_565;
4420	trochtova	636	screen.mask_conv = mask_565;
4419	trochtova	637	screen.pixelbytes = 2;
		638	break;
		639	case VISUAL_RGB_8_8_8:
		640	screen.rgb_conv = rgb_888;
4420	trochtova	641	screen.mask_conv = mask_888;
4419	trochtova	642	screen.pixelbytes = 3;
		643	break;
		644	case VISUAL_BGR_8_8_8:
		645	screen.rgb_conv = bgr_888;
4420	trochtova	646	screen.mask_conv = mask_888;
4419	trochtova	647	screen.pixelbytes = 3;
		648	break;
		649	case VISUAL_RGB_8_8_8_0:
		650	screen.rgb_conv = rgb_888;
4420	trochtova	651	screen.mask_conv = mask_888;
4419	trochtova	652	screen.pixelbytes = 4;
		653	break;
		654	case VISUAL_RGB_0_8_8_8:
		655	screen.rgb_conv = rgb_0888;
4420	trochtova	656	screen.mask_conv = mask_0888;
4419	trochtova	657	screen.pixelbytes = 4;
		658	break;
		659	case VISUAL_BGR_0_8_8_8:
		660	screen.rgb_conv = bgr_0888;
4420	trochtova	661	screen.mask_conv = mask_0888;
4419	trochtova	662	screen.pixelbytes = 4;
		663	break;
		664	default:
		665	return false;
		666	}
4420	trochtova	667
4419	trochtova	668	screen.fb_addr = (unsigned char *) addr;
		669	screen.xres = xres;
		670	screen.yres = yres;
		671	screen.scanline = scan;
		672
		673	screen.glyphscanline = FONT_WIDTH * screen.pixelbytes;
		674	screen.glyphbytes = screen.glyphscanline * FONT_SCANLINES;
4420	trochtova	675
		676	size_t glyphsize = 2 * FONT_GLYPHS * screen.glyphbytes;
		677	uint8_t glyphs = (uint8_t ) malloc(glyphsize);
4419	trochtova	678	if (!glyphs)
		679	return false;
		680
		681	memset(glyphs, 0, glyphsize);
		682	screen.glyphs = glyphs;
4420	trochtova	683
4419	trochtova	684	render_glyphs();
		685
		686	/* Create first viewport */
		687	vport_create(0, 0, xres, yres);
		688
		689	return true;
		690	}
		691
		692
		693	/** Draw a glyph, takes advantage of alignment.
		694	*
		695	* This version can only be used if the following conditions are met:
		696	*
		697	* - word size is divisible by pixelbytes
		698	* - cell scanline size is divisible by word size
		699	* - cell scanlines are word-aligned
		700	*
		701	* It makes use of the pre-rendered mask to process (possibly) several
		702	* pixels at once (word size / pixelbytes pixels at a time are processed)
		703	* making it very fast. Most notably this version is not applicable at 24 bits
		704	* per pixel.
		705	*
4420	trochtova	706	* @param x x coordinate of top-left corner on screen.
		707	* @param y y coordinate of top-left corner on screen.
		708	* @param cursor Draw glyph with cursor
		709	* @param glyphs Pointer to font bitmap.
		710	* @param glyph Code of the glyph to draw.
		711	* @param fg_color Foreground color.
		712	* @param bg_color Backgroudn color.
		713	*
4419	trochtova	714	*/
		715	static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
		716	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color)
		717	{
4420	trochtova	718	unsigned int i;
		719	unsigned int yd;
		720	unsigned long fg_buf;
		721	unsigned long bg_buf;
4419	trochtova	722	unsigned long mask;
4420	trochtova	723
4419	trochtova	724	/*
		725	* Prepare a pair of words, one filled with foreground-color
		726	* pattern and the other filled with background-color pattern.
		727	*/
		728	for (i = 0; i < sizeof(unsigned long) / screen.pixelbytes; i++) {
4420	trochtova	729	screen.rgb_conv(&((uint8_t ) &fg_buf)[i screen.pixelbytes],
4419	trochtova	730	fg_color);
4420	trochtova	731	screen.rgb_conv(&((uint8_t ) &bg_buf)[i screen.pixelbytes],
4419	trochtova	732	bg_color);
		733	}
4420	trochtova	734
4419	trochtova	735	/* Pointer to the current position in the mask. */
4420	trochtova	736	unsigned long maskp = (unsigned long ) &glyphs[GLYPH_POS(glyph, 0, cursor)];
		737
4419	trochtova	738	/* Pointer to the current position on the screen. */
4420	trochtova	739	unsigned long dp = (unsigned long ) &screen.fb_addr[FB_POS(x, y)];
		740
4419	trochtova	741	/* Width of the character cell in words. */
4420	trochtova	742	unsigned int ww = FONT_WIDTH * screen.pixelbytes / sizeof(unsigned long);
		743
4419	trochtova	744	/* Offset to add when moving to another screen scanline. */
4420	trochtova	745	unsigned int d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
		746
4419	trochtova	747	for (yd = 0; yd < FONT_SCANLINES; yd++) {
		748	/*
		749	* Now process the cell scanline, combining foreground
		750	* and background color patters using the pre-rendered mask.
		751	*/
		752	for (i = 0; i < ww; i++) {
		753	mask = *maskp++;
		754	*dp++ = (fg_buf & mask) \| (bg_buf & ~mask);
		755	}
4420	trochtova	756
4419	trochtova	757	/* Move to the beginning of the next scanline of the cell. */
		758	dp = (unsigned long ) ((uint8_t ) dp + d_add);
		759	}
		760	}
		761
		762	/** Draw a glyph, fallback version.
		763	*
		764	* This version does not make use of the pre-rendered mask, it uses
		765	* the font bitmap directly. It works always, but it is slower.
		766	*
4420	trochtova	767	* @param x x coordinate of top-left corner on screen.
		768	* @param y y coordinate of top-left corner on screen.
		769	* @param cursor Draw glyph with cursor
		770	* @param glyphs Pointer to font bitmap.
		771	* @param glyph Code of the glyph to draw.
		772	* @param fg_color Foreground color.
		773	* @param bg_color Backgroudn color.
		774	*
4419	trochtova	775	*/
		776	void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
		777	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color)
		778	{
4420	trochtova	779	unsigned int i;
		780	unsigned int j;
		781	unsigned int yd;
		782	uint8_t fg_buf[4];
		783	uint8_t bg_buf[4];
		784	uint8_t *sp;
4419	trochtova	785	uint8_t b;
4420	trochtova	786
4419	trochtova	787	/* Pre-render 1x the foreground and background color pixels. */
		788	if (cursor) {
		789	screen.rgb_conv(fg_buf, bg_color);
		790	screen.rgb_conv(bg_buf, fg_color);
		791	} else {
		792	screen.rgb_conv(fg_buf, fg_color);
		793	screen.rgb_conv(bg_buf, bg_color);
		794	}
4420	trochtova	795
4419	trochtova	796	/* Pointer to the current position on the screen. */
4420	trochtova	797	uint8_t dp = (uint8_t ) &screen.fb_addr[FB_POS(x, y)];
		798
4419	trochtova	799	/* Offset to add when moving to another screen scanline. */
4420	trochtova	800	unsigned int d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
		801
4419	trochtova	802	for (yd = 0; yd < FONT_SCANLINES; yd++) {
		803	/* Byte containing bits of the glyph scanline. */
		804	b = fb_font[glyph][yd];
4420	trochtova	805
4419	trochtova	806	for (i = 0; i < FONT_WIDTH; i++) {
		807	/* Choose color based on the current bit. */
		808	sp = (b & 0x80) ? fg_buf : bg_buf;
4420	trochtova	809
4419	trochtova	810	/* Copy the pixel. */
		811	for (j = 0; j < screen.pixelbytes; j++) {
		812	dp++ = sp++;
		813	}
4420	trochtova	814
4419	trochtova	815	/* Move to the next bit. */
		816	b = b << 1;
		817	}
		818
		819	/* Move to the beginning of the next scanline of the cell. */
		820	dp += d_add;
		821	}
		822	}
		823
4420	trochtova	824	/** Draw glyph at specified position in viewport.
4419	trochtova	825	*
		826	* @param vport Viewport identification
		827	* @param cursor Draw glyph with cursor
		828	* @param col Screen position relative to viewport
		829	* @param row Screen position relative to viewport
		830	*
		831	*/
		832	static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
		833	unsigned int row)
		834	{
		835	unsigned int x = vport->x + COL2X(col);
		836	unsigned int y = vport->y + ROW2Y(row);
		837
4420	trochtova	838	uint32_t glyph = vport->backbuf[BB_POS(vport, col, row)].glyph;
		839	uint32_t fg_color = vport->backbuf[BB_POS(vport, col, row)].fg_color;
		840	uint32_t bg_color = vport->backbuf[BB_POS(vport, col, row)].bg_color;
		841
4419	trochtova	842	(*vport->dglyph)(x, y, cursor, screen.glyphs, glyph,
		843	fg_color, bg_color);
		844	}
		845
		846	/** Hide cursor if it is shown
		847	*
		848	*/
		849	static void cursor_hide(viewport_t *vport)
		850	{
		851	if ((vport->cursor_active) && (vport->cursor_shown)) {
		852	draw_vp_glyph(vport, false, vport->cur_col, vport->cur_row);
		853	vport->cursor_shown = false;
		854	}
		855	}
		856
		857
		858	/** Show cursor if cursor showing is enabled
		859	*
		860	*/
		861	static void cursor_show(viewport_t *vport)
		862	{
		863	/* Do not check for cursor_shown */
		864	if (vport->cursor_active) {
		865	draw_vp_glyph(vport, true, vport->cur_col, vport->cur_row);
		866	vport->cursor_shown = true;
		867	}
		868	}
		869
		870
		871	/** Invert cursor, if it is enabled
		872	*
		873	*/
		874	static void cursor_blink(viewport_t *vport)
		875	{
		876	if (vport->cursor_shown)
		877	cursor_hide(vport);
		878	else
		879	cursor_show(vport);
		880	}
		881
		882
		883	/** Draw character at given position relative to viewport
		884	*
		885	* @param vport Viewport identification
		886	* @param c Character to draw
		887	* @param col Screen position relative to viewport
		888	* @param row Screen position relative to viewport
		889	*
		890	*/
		891	static void draw_char(viewport_t *vport, wchar_t c, unsigned int col, unsigned int row)
		892	{
		893	bb_cell_t *bbp;
4420	trochtova	894
4419	trochtova	895	/* Do not hide cursor if we are going to overwrite it */
		896	if ((vport->cursor_active) && (vport->cursor_shown) &&
		897	((vport->cur_col != col) \|\| (vport->cur_row != row)))
		898	cursor_hide(vport);
4420	trochtova	899
4419	trochtova	900	bbp = &vport->backbuf[BB_POS(vport, col, row)];
		901	bbp->glyph = fb_font_glyph(c);
		902	bbp->fg_color = vport->attr.fg_color;
		903	bbp->bg_color = vport->attr.bg_color;
4420	trochtova	904
4419	trochtova	905	draw_vp_glyph(vport, false, col, row);
		906
		907	vport->cur_col = col;
		908	vport->cur_row = row;
		909
		910	vport->cur_col++;
		911	if (vport->cur_col >= vport->cols) {
		912	vport->cur_col = 0;
		913	vport->cur_row++;
		914	if (vport->cur_row >= vport->rows)
		915	vport->cur_row--;
		916	}
		917
		918	cursor_show(vport);
		919	}
		920
		921	/** Draw text data to viewport.
		922	*
		923	* @param vport Viewport id
		924	* @param data Text data.
4420	trochtova	925	* @param x Leftmost column of the area.
		926	* @param y Topmost row of the area.
		927	* @param w Number of rows.
		928	* @param h Number of columns.
		929	*
4419	trochtova	930	*/
		931	static void draw_text_data(viewport_t vport, keyfield_t data, unsigned int x,
		932	unsigned int y, unsigned int w, unsigned int h)
		933	{
4420	trochtova	934	unsigned int i;
		935	unsigned int j;
4419	trochtova	936	bb_cell_t *bbp;
		937	attrs_t *a;
		938	attr_rgb_t rgb;
4420	trochtova	939
4419	trochtova	940	for (j = 0; j < h; j++) {
		941	for (i = 0; i < w; i++) {
		942	unsigned int col = x + i;
		943	unsigned int row = y + j;
4420	trochtova	944
4419	trochtova	945	bbp = &vport->backbuf[BB_POS(vport, col, row)];
4420	trochtova	946
4419	trochtova	947	a = &data[j * w + i].attrs;
		948	rgb_from_attr(&rgb, a);
4420	trochtova	949
4419	trochtova	950	bbp->glyph = fb_font_glyph(data[j * w + i].character);
		951	bbp->fg_color = rgb.fg_color;
		952	bbp->bg_color = rgb.bg_color;
4420	trochtova	953
4419	trochtova	954	draw_vp_glyph(vport, false, col, row);
		955	}
		956	}
		957	cursor_show(vport);
		958	}
		959
		960
		961	static void putpixel_pixmap(void *data, unsigned int x, unsigned int y, uint32_t color)
		962	{
		963	int pm = ((int ) data);
		964	pixmap_t *pmap = &pixmaps[pm];
		965	unsigned int pos = (y * pmap->width + x) * screen.pixelbytes;
		966
		967	screen.rgb_conv(&pmap->data[pos], color);
		968	}
		969
		970
		971	static void putpixel(void *data, unsigned int x, unsigned int y, uint32_t color)
		972	{
		973	viewport_t vport = (viewport_t ) data;
		974	unsigned int dx = vport->x + x;
		975	unsigned int dy = vport->y + y;
		976
		977	screen.rgb_conv(&screen.fb_addr[FB_POS(dx, dy)], color);
		978	}
		979
		980
		981	/** Return first free pixmap
		982	*
		983	*/
		984	static int find_free_pixmap(void)
		985	{
		986	unsigned int i;
		987
		988	for (i = 0; i < MAX_PIXMAPS; i++)
		989	if (!pixmaps[i].data)
		990	return i;
		991
		992	return -1;
		993	}
		994
		995
		996	/** Create a new pixmap and return appropriate ID
		997	*
		998	*/
		999	static int shm2pixmap(unsigned char *shm, size_t size)
		1000	{
		1001	int pm;
		1002	pixmap_t *pmap;
		1003
		1004	pm = find_free_pixmap();
		1005	if (pm == -1)
		1006	return ELIMIT;
		1007
		1008	pmap = &pixmaps[pm];
		1009
		1010	if (ppm_get_data(shm, size, &pmap->width, &pmap->height))
		1011	return EINVAL;
		1012
		1013	pmap->data = malloc(pmap->width * pmap->height * screen.pixelbytes);
		1014	if (!pmap->data)
		1015	return ENOMEM;
		1016
		1017	ppm_draw(shm, size, 0, 0, pmap->width, pmap->height, putpixel_pixmap, (void *) &pm);
		1018
		1019	return pm;
		1020	}
		1021
		1022
		1023	/** Handle shared memory communication calls
		1024	*
		1025	* Protocol for drawing pixmaps:
		1026	* - FB_PREPARE_SHM(client shm identification)
		1027	* - IPC_M_AS_AREA_SEND
		1028	* - FB_DRAW_PPM(startx, starty)
		1029	* - FB_DROP_SHM
		1030	*
		1031	* Protocol for text drawing
		1032	* - IPC_M_AS_AREA_SEND
		1033	* - FB_DRAW_TEXT_DATA
		1034	*
		1035	* @param callid Callid of the current call
		1036	* @param call Current call data
		1037	* @param vp Active viewport
		1038	*
		1039	* @return false if the call was not handled byt this function, true otherwise
		1040	*
		1041	* Note: this function is not threads safe, you would have
		1042	* to redefine static variables with __thread
		1043	*
		1044	*/
		1045	static bool shm_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
		1046	{
		1047	static keyfield_t *interbuffer = NULL;
		1048	static size_t intersize = 0;
		1049
		1050	static unsigned char *shm = NULL;
		1051	static ipcarg_t shm_id = 0;
		1052	static size_t shm_size;
		1053
		1054	bool handled = true;
		1055	int retval = EOK;
		1056	viewport_t *vport = &viewports[vp];
		1057	unsigned int x;
		1058	unsigned int y;
		1059	unsigned int w;
		1060	unsigned int h;
		1061
		1062	switch (IPC_GET_METHOD(*call)) {
		1063	case IPC_M_SHARE_OUT:
		1064	/* We accept one area for data interchange */
		1065	if (IPC_GET_ARG1(*call) == shm_id) {
		1066	void dest = as_get_mappable_page(IPC_GET_ARG2(call));
		1067	shm_size = IPC_GET_ARG2(*call);
		1068	if (!ipc_answer_1(callid, EOK, (sysarg_t) dest))
		1069	shm = dest;
		1070	else
		1071	shm_id = 0;
		1072
		1073	if (shm[0] != 'P')
		1074	return false;
		1075
		1076	return true;
		1077	} else {
		1078	intersize = IPC_GET_ARG2(*call);
		1079	receive_comm_area(callid, call, (void *) &interbuffer);
		1080	}
		1081	return true;
		1082	case FB_PREPARE_SHM:
		1083	if (shm_id)
		1084	retval = EBUSY;
		1085	else
		1086	shm_id = IPC_GET_ARG1(*call);
		1087	break;
		1088
		1089	case FB_DROP_SHM:
		1090	if (shm) {
		1091	as_area_destroy(shm);
		1092	shm = NULL;
		1093	}
		1094	shm_id = 0;
		1095	break;
		1096
		1097	case FB_SHM2PIXMAP:
		1098	if (!shm) {
		1099	retval = EINVAL;
		1100	break;
		1101	}
		1102	retval = shm2pixmap(shm, shm_size);
		1103	break;
		1104	case FB_DRAW_PPM:
		1105	if (!shm) {
		1106	retval = EINVAL;
		1107	break;
		1108	}
		1109	x = IPC_GET_ARG1(*call);
		1110	y = IPC_GET_ARG2(*call);
		1111
		1112	if ((x > vport->width) \|\| (y > vport->height)) {
		1113	retval = EINVAL;
		1114	break;
		1115	}
		1116
		1117	ppm_draw(shm, shm_size, IPC_GET_ARG1(*call),
		1118	IPC_GET_ARG2(call), vport->width - x, vport->height - y, putpixel, (void ) vport);
		1119	break;
		1120	case FB_DRAW_TEXT_DATA:
		1121	x = IPC_GET_ARG1(*call);
		1122	y = IPC_GET_ARG2(*call);
		1123	w = IPC_GET_ARG3(*call);
		1124	h = IPC_GET_ARG4(*call);
		1125	if (!interbuffer) {
		1126	retval = EINVAL;
		1127	break;
		1128	}
		1129	if (x + w > vport->cols \|\| y + h > vport->rows) {
		1130	retval = EINVAL;
		1131	break;
		1132	}
		1133	if (intersize < w * h * sizeof(*interbuffer)) {
		1134	retval = EINVAL;
		1135	break;
		1136	}
		1137	draw_text_data(vport, interbuffer, x, y, w, h);
		1138	break;
		1139	default:
		1140	handled = false;
		1141	}
		1142
		1143	if (handled)
		1144	ipc_answer_0(callid, retval);
		1145	return handled;
		1146	}
		1147
		1148
		1149	static void copy_vp_to_pixmap(viewport_t vport, pixmap_t pmap)
		1150	{
		1151	unsigned int width = vport->width;
		1152	unsigned int height = vport->height;
		1153
		1154	if (width + vport->x > screen.xres)
		1155	width = screen.xres - vport->x;
		1156	if (height + vport->y > screen.yres)
		1157	height = screen.yres - vport->y;
		1158
		1159	unsigned int realwidth = pmap->width <= width ? pmap->width : width;
		1160	unsigned int realheight = pmap->height <= height ? pmap->height : height;
		1161
		1162	unsigned int srcrowsize = vport->width * screen.pixelbytes;
		1163	unsigned int realrowsize = realwidth * screen.pixelbytes;
		1164
		1165	unsigned int y;
		1166	for (y = 0; y < realheight; y++) {
		1167	unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
		1168	memcpy(pmap->data + srcrowsize * y, screen.fb_addr + tmp, realrowsize);
		1169	}
		1170	}
		1171
		1172
		1173	/** Save viewport to pixmap
		1174	*
		1175	*/
		1176	static int save_vp_to_pixmap(viewport_t *vport)
		1177	{
		1178	int pm;
		1179	pixmap_t *pmap;
		1180
		1181	pm = find_free_pixmap();
		1182	if (pm == -1)
		1183	return ELIMIT;
		1184
		1185	pmap = &pixmaps[pm];
		1186	pmap->data = malloc(screen.pixelbytes * vport->width * vport->height);
		1187	if (!pmap->data)
		1188	return ENOMEM;
		1189
		1190	pmap->width = vport->width;
		1191	pmap->height = vport->height;
		1192
		1193	copy_vp_to_pixmap(vport, pmap);
		1194
		1195	return pm;
		1196	}
		1197
		1198
		1199	/** Draw pixmap on screen
		1200	*
		1201	* @param vp Viewport to draw on
		1202	* @param pm Pixmap identifier
		1203	*
		1204	*/
		1205	static int draw_pixmap(int vp, int pm)
		1206	{
		1207	pixmap_t *pmap = &pixmaps[pm];
		1208	viewport_t *vport = &viewports[vp];
		1209
		1210	unsigned int width = vport->width;
		1211	unsigned int height = vport->height;
		1212
		1213	if (width + vport->x > screen.xres)
		1214	width = screen.xres - vport->x;
		1215	if (height + vport->y > screen.yres)
		1216	height = screen.yres - vport->y;
		1217
		1218	if (!pmap->data)
		1219	return EINVAL;
		1220
		1221	unsigned int realwidth = pmap->width <= width ? pmap->width : width;
		1222	unsigned int realheight = pmap->height <= height ? pmap->height : height;
		1223
		1224	unsigned int srcrowsize = vport->width * screen.pixelbytes;
		1225	unsigned int realrowsize = realwidth * screen.pixelbytes;
		1226
		1227	unsigned int y;
		1228	for (y = 0; y < realheight; y++) {
		1229	unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
		1230	memcpy(screen.fb_addr + tmp, pmap->data + y * srcrowsize, realrowsize);
		1231	}
		1232
		1233	return EOK;
		1234	}
		1235
		1236
		1237	/** Tick animation one step forward
		1238	*
		1239	*/
		1240	static void anims_tick(void)
		1241	{
		1242	unsigned int i;
		1243	static int counts = 0;
		1244
		1245	/* Limit redrawing */
		1246	counts = (counts + 1) % 8;
		1247	if (counts)
		1248	return;
4420	trochtova	1249
4419	trochtova	1250	for (i = 0; i < MAX_ANIMATIONS; i++) {
		1251	if ((!animations[i].animlen) \|\| (!animations[i].initialized) \|\|
		1252	(!animations[i].enabled))
		1253	continue;
		1254
		1255	draw_pixmap(animations[i].vp, animations[i].pixmaps[animations[i].pos]);
		1256	animations[i].pos = (animations[i].pos + 1) % animations[i].animlen;
		1257	}
		1258	}
		1259
		1260
		1261	static unsigned int pointer_x;
		1262	static unsigned int pointer_y;
		1263	static bool pointer_shown, pointer_enabled;
		1264	static int pointer_vport = -1;
		1265	static int pointer_pixmap = -1;
		1266
		1267
		1268	static void mouse_show(void)
		1269	{
		1270	int i, j;
		1271	int visibility;
		1272	int color;
		1273	int bytepos;
		1274
		1275	if ((pointer_shown) \|\| (!pointer_enabled))
		1276	return;
		1277
		1278	/* Save image under the pointer. */
		1279	if (pointer_vport == -1) {
		1280	pointer_vport = vport_create(pointer_x, pointer_y, pointer_width, pointer_height);
		1281	if (pointer_vport < 0)
		1282	return;
		1283	} else {
		1284	viewports[pointer_vport].x = pointer_x;
		1285	viewports[pointer_vport].y = pointer_y;
		1286	}
		1287
		1288	if (pointer_pixmap == -1)
		1289	pointer_pixmap = save_vp_to_pixmap(&viewports[pointer_vport]);
		1290	else
		1291	copy_vp_to_pixmap(&viewports[pointer_vport], &pixmaps[pointer_pixmap]);
		1292
		1293	/* Draw mouse pointer. */
		1294	for (i = 0; i < pointer_height; i++)
		1295	for (j = 0; j < pointer_width; j++) {
		1296	bytepos = i * ((pointer_width - 1) / 8 + 1) + j / 8;
		1297	visibility = pointer_mask_bits[bytepos] &
		1298	(1 << (j % 8));
		1299	if (visibility) {
		1300	color = pointer_bits[bytepos] &
		1301	(1 << (j % 8)) ? 0 : 0xffffff;
		1302	if (pointer_x + j < screen.xres && pointer_y +
		1303	i < screen.yres)
		1304	putpixel(&viewports[0], pointer_x + j,
		1305	pointer_y + i, color);
		1306	}
		1307	}
		1308	pointer_shown = 1;
		1309	}
		1310
		1311
		1312	static void mouse_hide(void)
		1313	{
		1314	/* Restore image under the pointer. */
		1315	if (pointer_shown) {
		1316	draw_pixmap(pointer_vport, pointer_pixmap);
		1317	pointer_shown = 0;
		1318	}
		1319	}
		1320
		1321
		1322	static void mouse_move(unsigned int x, unsigned int y)
		1323	{
		1324	mouse_hide();
		1325	pointer_x = x;
		1326	pointer_y = y;
		1327	mouse_show();
		1328	}
		1329
		1330
		1331	static int anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
		1332	{
		1333	bool handled = true;
		1334	int retval = EOK;
		1335	int i, nvp;
		1336	int newval;
		1337
		1338	switch (IPC_GET_METHOD(*call)) {
		1339	case FB_ANIM_CREATE:
		1340	nvp = IPC_GET_ARG1(*call);
		1341	if (nvp == -1)
		1342	nvp = vp;
		1343	if (nvp >= MAX_VIEWPORTS \|\| nvp < 0 \|\|
		1344	!viewports[nvp].initialized) {
		1345	retval = EINVAL;
		1346	break;
		1347	}
		1348	for (i = 0; i < MAX_ANIMATIONS; i++) {
		1349	if (!animations[i].initialized)
		1350	break;
		1351	}
		1352	if (i == MAX_ANIMATIONS) {
		1353	retval = ELIMIT;
		1354	break;
		1355	}
		1356	animations[i].initialized = 1;
		1357	animations[i].animlen = 0;
		1358	animations[i].pos = 0;
		1359	animations[i].enabled = 0;
		1360	animations[i].vp = nvp;
		1361	retval = i;
		1362	break;
		1363	case FB_ANIM_DROP:
		1364	i = IPC_GET_ARG1(*call);
		1365	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1366	retval = EINVAL;
		1367	break;
		1368	}
		1369	animations[i].initialized = 0;
		1370	break;
		1371	case FB_ANIM_ADDPIXMAP:
		1372	i = IPC_GET_ARG1(*call);
		1373	if (i >= MAX_ANIMATIONS \|\| i < 0 \|\|
		1374	!animations[i].initialized) {
		1375	retval = EINVAL;
		1376	break;
		1377	}
		1378	if (animations[i].animlen == MAX_ANIM_LEN) {
		1379	retval = ELIMIT;
		1380	break;
		1381	}
		1382	newval = IPC_GET_ARG2(*call);
		1383	if (newval < 0 \|\| newval > MAX_PIXMAPS \|\|
		1384	!pixmaps[newval].data) {
		1385	retval = EINVAL;
		1386	break;
		1387	}
		1388	animations[i].pixmaps[animations[i].animlen++] = newval;
		1389	break;
		1390	case FB_ANIM_CHGVP:
		1391	i = IPC_GET_ARG1(*call);
		1392	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1393	retval = EINVAL;
		1394	break;
		1395	}
		1396	nvp = IPC_GET_ARG2(*call);
		1397	if (nvp == -1)
		1398	nvp = vp;
		1399	if (nvp >= MAX_VIEWPORTS \|\| nvp < 0 \|\|
		1400	!viewports[nvp].initialized) {
		1401	retval = EINVAL;
		1402	break;
		1403	}
		1404	animations[i].vp = nvp;
		1405	break;
		1406	case FB_ANIM_START:
		1407	case FB_ANIM_STOP:
		1408	i = IPC_GET_ARG1(*call);
		1409	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1410	retval = EINVAL;
		1411	break;
		1412	}
		1413	newval = (IPC_GET_METHOD(*call) == FB_ANIM_START);
		1414	if (newval ^ animations[i].enabled) {
		1415	animations[i].enabled = newval;
		1416	anims_enabled += newval ? 1 : -1;
		1417	}
		1418	break;
		1419	default:
		1420	handled = 0;
		1421	}
		1422	if (handled)
		1423	ipc_answer_0(callid, retval);
		1424	return handled;
		1425	}
		1426
		1427
		1428	/** Handler for messages concerning pixmap handling
		1429	*
		1430	*/
		1431	static int pixmap_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
		1432	{
		1433	bool handled = true;
		1434	int retval = EOK;
		1435	int i, nvp;
		1436
		1437	switch (IPC_GET_METHOD(*call)) {
		1438	case FB_VP_DRAW_PIXMAP:
		1439	nvp = IPC_GET_ARG1(*call);
		1440	if (nvp == -1)
		1441	nvp = vp;
		1442	if (nvp < 0 \|\| nvp >= MAX_VIEWPORTS \|\|
		1443	!viewports[nvp].initialized) {
		1444	retval = EINVAL;
		1445	break;
		1446	}
		1447	i = IPC_GET_ARG2(*call);
		1448	retval = draw_pixmap(nvp, i);
		1449	break;
		1450	case FB_VP2PIXMAP:
		1451	nvp = IPC_GET_ARG1(*call);
		1452	if (nvp == -1)
		1453	nvp = vp;
		1454	if (nvp < 0 \|\| nvp >= MAX_VIEWPORTS \|\|
		1455	!viewports[nvp].initialized)
		1456	retval = EINVAL;
		1457	else
		1458	retval = save_vp_to_pixmap(&viewports[nvp]);
		1459	break;
		1460	case FB_DROP_PIXMAP:
		1461	i = IPC_GET_ARG1(*call);
		1462	if (i >= MAX_PIXMAPS) {
		1463	retval = EINVAL;
		1464	break;
		1465	}
		1466	if (pixmaps[i].data) {
		1467	free(pixmaps[i].data);
		1468	pixmaps[i].data = NULL;
		1469	}
		1470	break;
		1471	default:
		1472	handled = 0;
		1473	}
		1474
		1475	if (handled)
		1476	ipc_answer_0(callid, retval);
		1477	return handled;
		1478
		1479	}
		1480
		1481	static int rgb_from_style(attr_rgb_t *rgb, int style)
		1482	{
		1483	switch (style) {
		1484	case STYLE_NORMAL:
		1485	rgb->fg_color = color_table[COLOR_BLACK];
		1486	rgb->bg_color = color_table[COLOR_WHITE];
		1487	break;
		1488	case STYLE_EMPHASIS:
		1489	rgb->fg_color = color_table[COLOR_RED];
		1490	rgb->bg_color = color_table[COLOR_WHITE];
		1491	break;
		1492	default:
		1493	return EINVAL;
		1494	}
		1495
		1496	return EOK;
		1497	}
		1498
		1499	static int rgb_from_idx(attr_rgb_t *rgb, ipcarg_t fg_color,
		1500	ipcarg_t bg_color, ipcarg_t flags)
		1501	{
		1502	fg_color = (fg_color & 7) \| ((flags & CATTR_BRIGHT) ? 8 : 0);
		1503	bg_color = (bg_color & 7) \| ((flags & CATTR_BRIGHT) ? 8 : 0);
		1504
		1505	rgb->fg_color = color_table[fg_color];
		1506	rgb->bg_color = color_table[bg_color];
		1507
		1508	return EOK;
		1509	}
		1510
		1511	static int rgb_from_attr(attr_rgb_t rgb, const attrs_t a)
		1512	{
		1513	int rc;
		1514
		1515	switch (a->t) {
		1516	case at_style:
		1517	rc = rgb_from_style(rgb, a->a.s.style);
		1518	break;
		1519	case at_idx:
		1520	rc = rgb_from_idx(rgb, a->a.i.fg_color,
		1521	a->a.i.bg_color, a->a.i.flags);
		1522	break;
		1523	case at_rgb:
		1524	*rgb = a->a.r;
		1525	rc = EOK;
		1526	break;
		1527	}
		1528
		1529	return rc;
		1530	}
		1531
		1532	static int fb_set_style(viewport_t *vport, ipcarg_t style)
		1533	{
		1534	return rgb_from_style(&vport->attr, (int) style);
		1535	}
		1536
		1537	static int fb_set_color(viewport_t *vport, ipcarg_t fg_color,
		1538	ipcarg_t bg_color, ipcarg_t flags)
		1539	{
		1540	return rgb_from_idx(&vport->attr, fg_color, bg_color, flags);
		1541	}
		1542
		1543	/** Function for handling connections to FB
		1544	*
		1545	*/
		1546	static void fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
		1547	{
		1548	unsigned int vp = 0;
		1549	viewport_t *vport = &viewports[vp];
		1550
		1551	if (client_connected) {
		1552	ipc_answer_0(iid, ELIMIT);
		1553	return;
		1554	}
		1555
		1556	/* Accept connection */
		1557	client_connected = true;
		1558	ipc_answer_0(iid, EOK);
		1559
		1560	while (true) {
		1561	ipc_callid_t callid;
		1562	ipc_call_t call;
		1563	int retval;
		1564	unsigned int i;
		1565	int scroll;
		1566	wchar_t ch;
		1567	unsigned int row, col;
		1568
		1569	if ((vport->cursor_active) \|\| (anims_enabled))
		1570	callid = async_get_call_timeout(&call, 250000);
		1571	else
		1572	callid = async_get_call(&call);
		1573
		1574	mouse_hide();
		1575	if (!callid) {
		1576	cursor_blink(vport);
		1577	anims_tick();
		1578	mouse_show();
		1579	continue;
		1580	}
		1581
		1582	if (shm_handle(callid, &call, vp))
		1583	continue;
		1584
		1585	if (pixmap_handle(callid, &call, vp))
		1586	continue;
		1587
		1588	if (anim_handle(callid, &call, vp))
		1589	continue;
		1590
		1591	switch (IPC_GET_METHOD(call)) {
		1592	case IPC_M_PHONE_HUNGUP:
		1593	client_connected = false;
		1594
		1595	/* Cleanup other viewports */
		1596	for (i = 1; i < MAX_VIEWPORTS; i++)
		1597	vport->initialized = false;
		1598
		1599	/* Exit thread */
		1600	return;
		1601
		1602	case FB_PUTCHAR:
		1603	ch = IPC_GET_ARG1(call);
		1604	row = IPC_GET_ARG2(call);
		1605	col = IPC_GET_ARG3(call);
		1606
		1607	if ((col >= vport->cols) \|\| (row >= vport->rows)) {
		1608	retval = EINVAL;
		1609	break;
		1610	}
		1611	ipc_answer_0(callid, EOK);
		1612
		1613	draw_char(vport, ch, col, row);
		1614
		1615	/* Message already answered */
		1616	continue;
		1617	case FB_CLEAR:
		1618	vport_clear(vport);
		1619	cursor_show(vport);
		1620	retval = EOK;
		1621	break;
		1622	case FB_CURSOR_GOTO:
		1623	row = IPC_GET_ARG1(call);
		1624	col = IPC_GET_ARG2(call);
		1625
		1626	if ((col >= vport->cols) \|\| (row >= vport->rows)) {
		1627	retval = EINVAL;
		1628	break;
		1629	}
		1630	retval = EOK;
		1631
		1632	cursor_hide(vport);
		1633	vport->cur_col = col;
		1634	vport->cur_row = row;
		1635	cursor_show(vport);
		1636	break;
		1637	case FB_CURSOR_VISIBILITY:
		1638	cursor_hide(vport);
		1639	vport->cursor_active = IPC_GET_ARG1(call);
		1640	cursor_show(vport);
		1641	retval = EOK;
		1642	break;
		1643	case FB_GET_CSIZE:
		1644	ipc_answer_2(callid, EOK, vport->rows, vport->cols);
		1645	continue;
		1646	case FB_SCROLL:
		1647	scroll = IPC_GET_ARG1(call);
		1648	if ((scroll > (int) vport->rows) \|\| (scroll < (-(int) vport->rows))) {
		1649	retval = EINVAL;
		1650	break;
		1651	}
		1652	cursor_hide(vport);
		1653	vport_scroll(vport, scroll);
		1654	cursor_show(vport);
		1655	retval = EOK;
		1656	break;
		1657	case FB_VIEWPORT_SWITCH:
		1658	i = IPC_GET_ARG1(call);
		1659	if (i >= MAX_VIEWPORTS) {
		1660	retval = EINVAL;
		1661	break;
		1662	}
		1663	if (!viewports[i].initialized) {
		1664	retval = EADDRNOTAVAIL;
		1665	break;
		1666	}
		1667	cursor_hide(vport);
		1668	vp = i;
		1669	vport = &viewports[vp];
		1670	cursor_show(vport);
		1671	retval = EOK;
		1672	break;
		1673	case FB_VIEWPORT_CREATE:
		1674	retval = vport_create(IPC_GET_ARG1(call) >> 16,
		1675	IPC_GET_ARG1(call) & 0xffff,
		1676	IPC_GET_ARG2(call) >> 16,
		1677	IPC_GET_ARG2(call) & 0xffff);
		1678	break;
		1679	case FB_VIEWPORT_DELETE:
		1680	i = IPC_GET_ARG1(call);
		1681	if (i >= MAX_VIEWPORTS) {
		1682	retval = EINVAL;
		1683	break;
		1684	}
		1685	if (!viewports[i].initialized) {
		1686	retval = EADDRNOTAVAIL;
		1687	break;
		1688	}
		1689	viewports[i].initialized = false;
		1690	if (viewports[i].bgpixel)
		1691	free(viewports[i].bgpixel);
		1692	if (viewports[i].backbuf)
		1693	free(viewports[i].backbuf);
		1694	retval = EOK;
		1695	break;
		1696	case FB_SET_STYLE:
		1697	retval = fb_set_style(vport, IPC_GET_ARG1(call));
		1698	break;
		1699	case FB_SET_COLOR:
		1700	retval = fb_set_color(vport, IPC_GET_ARG1(call),
		1701	IPC_GET_ARG2(call), IPC_GET_ARG3(call));
		1702	break;
		1703	case FB_SET_RGB_COLOR:
		1704	vport->attr.fg_color = IPC_GET_ARG1(call);
		1705	vport->attr.bg_color = IPC_GET_ARG2(call);
		1706	retval = EOK;
		1707	break;
		1708	case FB_GET_RESOLUTION:
		1709	ipc_answer_2(callid, EOK, screen.xres, screen.yres);
		1710	continue;
		1711	case FB_POINTER_MOVE:
		1712	pointer_enabled = true;
		1713	mouse_move(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
		1714	retval = EOK;
		1715	break;
4420	trochtova	1716	case FB_SCREEN_YIELD:
		1717	case FB_SCREEN_RECLAIM:
		1718	retval = EOK;
		1719	break;
4419	trochtova	1720	default:
		1721	retval = ENOENT;
		1722	}
		1723	ipc_answer_0(callid, retval);
		1724	}
		1725	}
		1726
		1727	/** Initialization of framebuffer
		1728	*
		1729	*/
		1730	int fb_init(void)
		1731	{
		1732	async_set_client_connection(fb_client_connection);
		1733
		1734	void fb_ph_addr = (void ) sysinfo_value("fb.address.physical");
		1735	unsigned int fb_offset = sysinfo_value("fb.offset");
		1736	unsigned int fb_width = sysinfo_value("fb.width");
		1737	unsigned int fb_height = sysinfo_value("fb.height");
		1738	unsigned int fb_scanline = sysinfo_value("fb.scanline");
		1739	unsigned int fb_visual = sysinfo_value("fb.visual");
		1740
		1741	unsigned int fbsize = fb_scanline * fb_height;
		1742	void *fb_addr = as_get_mappable_page(fbsize);
		1743
		1744	if (physmem_map(fb_ph_addr + fb_offset, fb_addr,
		1745	ALIGN_UP(fbsize, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ \| AS_AREA_WRITE) != 0)
		1746	return -1;
		1747
		1748	if (screen_init(fb_addr, fb_width, fb_height, fb_scanline, fb_visual))
		1749	return 0;
		1750
		1751	return -1;
		1752	}
		1753
		1754	/**
		1755	* @}
		1756	*/

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(root)//branches/dd/uspace/srv/fb/fb.c – Rev 4420