WebSVN – HelenOS – Blame – /trunk/uspace/srv/fb/fb.c/

Rev	Author	Line No.	Line
1363	vana	1	/*
3707	decky	2	* Copyright (c) 2008 Martin Decky
2071	jermar	3	* Copyright (c) 2006 Jakub Vana
		4	* Copyright (c) 2006 Ondrej Palkovsky
1363	vana	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
1740	jermar	31	/**
		32	* @defgroup fb Graphical framebuffer
		33	* @brief HelenOS graphical framebuffer.
1649	cejka	34	* @ingroup fbs
		35	* @{
3707	decky	36	*/
1888	jermar	37
1649	cejka	38	/** @file
		39	*/
		40
1430	jermar	41	#include <stdlib.h>
		42	#include <unistd.h>
		43	#include <string.h>
1363	vana	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>
1430	jermar	50	#include <ipc/ns.h>
1363	vana	51	#include <ipc/services.h>
		52	#include <kernel/errno.h>
1993	decky	53	#include <kernel/genarch/fb/visuals.h>
3767	svoboda	54	#include <console/color.h>
		55	#include <console/style.h>
1392	palkovsky	56	#include <async.h>
1993	decky	57	#include <bool.h>
1505	palkovsky	58
1404	palkovsky	59	#include "font-8x16.h"
1363	vana	60	#include "fb.h"
1505	palkovsky	61	#include "main.h"
		62	#include "../console/screenbuffer.h"
1547	palkovsky	63	#include "ppm.h"
1363	vana	64
1711	palkovsky	65	#include "pointer.xbm"
		66	#include "pointer_mask.xbm"
		67
3707	decky	68	#define DEFAULT_BGCOLOR 0xf0f0f0
		69	#define DEFAULT_FGCOLOR 0x000000
1363	vana	70
3707	decky	71	#define MAX_ANIM_LEN 8
		72	#define MAX_ANIMATIONS 4
		73	#define MAX_PIXMAPS 256 /*< Maximum number of saved pixmaps /
		74	#define MAX_VIEWPORTS 128 /*< Viewport is a rectangular area on the screen /
1363	vana	75
3744	svoboda	76	/** Function to render a pixel from a RGB value. */
3707	decky	77	typedef void (rgb_conv_t)(void , uint32_t);
1363	vana	78
3744	svoboda	79	/** Function to draw a glyph. */
		80	typedef void (*dg_t)(unsigned int x, unsigned int y, bool cursor,
		81	uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color);
		82
1485	palkovsky	83	struct {
3707	decky	84	uint8_t *fb_addr;
		85
1875	jermar	86	unsigned int xres;
		87	unsigned int yres;
3707	decky	88
1875	jermar	89	unsigned int scanline;
3707	decky	90	unsigned int glyphscanline;
		91
1875	jermar	92	unsigned int pixelbytes;
3707	decky	93	unsigned int glyphbytes;
		94
		95	rgb_conv_t rgb_conv;
1485	palkovsky	96	} screen;
1363	vana	97
3767	svoboda	98	/** Backbuffer character cell. */
1485	palkovsky	99	typedef struct {
4211	svoboda	100	uint32_t glyph;
3767	svoboda	101	uint32_t fg_color;
		102	uint32_t bg_color;
		103	} bb_cell_t;
		104
		105	typedef struct {
3707	decky	106	bool initialized;
		107	unsigned int x;
		108	unsigned int y;
		109	unsigned int width;
		110	unsigned int height;
		111
1485	palkovsky	112	/* Text support in window */
3707	decky	113	unsigned int cols;
		114	unsigned int rows;
		115
3744	svoboda	116	/*
		117	* Style and glyphs for text printing
		118	*/
		119
3767	svoboda	120	/** Current attributes. */
		121	attr_rgb_t attr;
3744	svoboda	122
		123	/** Pre-rendered mask for rendering glyphs. Different viewports
		124	* might use different drawing functions depending on whether their
		125	* scanlines are aligned on a word boundary.*/
3707	decky	126	uint8_t *glyphs;
3744	svoboda	127
3707	decky	128	uint8_t *bgpixel;
3744	svoboda	129
		130	/** Glyph drawing function for this viewport. */
		131	dg_t dglyph;
3707	decky	132
1485	palkovsky	133	/* Auto-cursor position */
3707	decky	134	bool cursor_active;
		135	unsigned int cur_col;
		136	unsigned int cur_row;
		137	bool cursor_shown;
		138
		139	/* Back buffer */
3767	svoboda	140	bb_cell_t *backbuf;
3707	decky	141	unsigned int bbsize;
1485	palkovsky	142	} viewport_t;
1363	vana	143
1646	palkovsky	144	typedef struct {
3707	decky	145	bool initialized;
		146	bool enabled;
1646	palkovsky	147	unsigned int vp;
3707	decky	148
1646	palkovsky	149	unsigned int pos;
		150	unsigned int animlen;
		151	unsigned int pixmaps[MAX_ANIM_LEN];
		152	} animation_t;
3707	decky	153
1646	palkovsky	154	static animation_t animations[MAX_ANIMATIONS];
3707	decky	155	static bool anims_enabled;
1646	palkovsky	156
1552	palkovsky	157	typedef struct {
		158	unsigned int width;
		159	unsigned int height;
1781	jermar	160	uint8_t *data;
1552	palkovsky	161	} pixmap_t;
3707	decky	162
1552	palkovsky	163	static pixmap_t pixmaps[MAX_PIXMAPS];
1485	palkovsky	164	static viewport_t viewports[128];
		165
3707	decky	166	static bool client_connected = false; /*< Allow only 1 connection /
1485	palkovsky	167
3767	svoboda	168	static uint32_t color_table[16] = {
		169	[COLOR_BLACK] = 0x000000,
		170	[COLOR_BLUE] = 0x0000f0,
		171	[COLOR_GREEN] = 0x00f000,
		172	[COLOR_CYAN] = 0x00f0f0,
		173	[COLOR_RED] = 0xf00000,
		174	[COLOR_MAGENTA] = 0xf000f0,
		175	[COLOR_YELLOW] = 0xf0f000,
		176	[COLOR_WHITE] = 0xf0f0f0,
		177
		178	[8 + COLOR_BLACK] = 0x000000,
		179	[8 + COLOR_BLUE] = 0x0000ff,
		180	[8 + COLOR_GREEN] = 0x00ff00,
		181	[8 + COLOR_CYAN] = 0x00ffff,
		182	[8 + COLOR_RED] = 0xff0000,
		183	[8 + COLOR_MAGENTA] = 0xff00ff,
		184	[8 + COLOR_YELLOW] = 0xffff00,
		185	[8 + COLOR_WHITE] = 0xffffff,
		186	};
		187
3792	svoboda	188	static int rgb_from_attr(attr_rgb_t rgb, const attrs_t a);
3767	svoboda	189	static int rgb_from_style(attr_rgb_t *rgb, int style);
		190	static int rgb_from_idx(attr_rgb_t *rgb, ipcarg_t fg_color,
		191	ipcarg_t bg_color, ipcarg_t flags);
		192
		193	static int fb_set_color(viewport_t *vport, ipcarg_t fg_color,
		194	ipcarg_t bg_color, ipcarg_t attr);
		195
3744	svoboda	196	static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
4211	svoboda	197	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
3744	svoboda	198	static void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
4211	svoboda	199	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
3744	svoboda	200
3739	svoboda	201	static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
3723	svoboda	202	unsigned int row);
		203
		204
3707	decky	205	#define RED(x, bits) ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
		206	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
		207	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
1363	vana	208
3707	decky	209	#define COL2X(col) ((col) * FONT_WIDTH)
		210	#define ROW2Y(row) ((row) * FONT_SCANLINES)
1363	vana	211
3707	decky	212	#define X2COL(x) ((x) / FONT_WIDTH)
		213	#define Y2ROW(y) ((y) / FONT_SCANLINES)
1363	vana	214
3707	decky	215	#define FB_POS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)
		216	#define BB_POS(vport, col, row) ((row) * vport->cols + (col))
		217	#define GLYPH_POS(glyph, y, cursor) (((glyph) + (cursor) * FONT_GLYPHS) * screen.glyphbytes + (y) * screen.glyphscanline)
1875	jermar	218
1363	vana	219
3707	decky	220	/** ARGB 8:8:8:8 conversion
		221	*
		222	*/
		223	static void rgb_0888(void *dst, uint32_t rgb)
1363	vana	224	{
3707	decky	225	((uint32_t ) dst) = rgb & 0xffffff;
1363	vana	226	}
		227
1994	decky	228
3707	decky	229	/** ABGR 8:8:8:8 conversion
		230	*
		231	*/
		232	static void bgr_0888(void *dst, uint32_t rgb)
1994	decky	233	{
3707	decky	234	((uint32_t ) dst)
		235	= (BLUE(rgb, 8) << 16) \| (GREEN(rgb, 8) << 8) \| RED(rgb, 8);
1994	decky	236	}
		237
3707	decky	238
3882	decky	239	/** RGB 8:8:8 conversion
3707	decky	240	*
		241	*/
		242	static void rgb_888(void *dst, uint32_t rgb)
1363	vana	243	{
3710	decky	244	((uint8_t *) dst)[0] = BLUE(rgb, 8);
		245	((uint8_t *) dst)[1] = GREEN(rgb, 8);
		246	((uint8_t *) dst)[2] = RED(rgb, 8);
1363	vana	247	}
		248
		249
3882	decky	250	/** BGR 8:8:8 conversion
		251	*
		252	*/
		253	static void bgr_888(void *dst, uint32_t rgb)
		254	{
		255	((uint8_t *) dst)[0] = RED(rgb, 8);
		256	((uint8_t *) dst)[1] = GREEN(rgb, 8);
		257	((uint8_t *) dst)[2] = BLUE(rgb, 8);
		258	}
		259
		260
3707	decky	261	/** RGB 5:5:5 conversion
		262	*
		263	*/
		264	static void rgb_555(void *dst, uint32_t rgb)
1993	decky	265	{
3707	decky	266	((uint16_t ) dst)
		267	= (RED(rgb, 5) << 10) \| (GREEN(rgb, 5) << 5) \| BLUE(rgb, 5);
1993	decky	268	}
		269
		270
3707	decky	271	/** RGB 5:6:5 conversion
		272	*
		273	*/
		274	static void rgb_565(void *dst, uint32_t rgb)
1363	vana	275	{
3707	decky	276	((uint16_t ) dst)
		277	= (RED(rgb, 5) << 11) \| (GREEN(rgb, 6) << 5) \| BLUE(rgb, 5);
1363	vana	278	}
		279
		280
3707	decky	281	/** RGB 3:2:3
		282	*
		283	*/
		284	static void rgb_323(void *dst, uint32_t rgb)
1363	vana	285	{
3707	decky	286	((uint8_t ) dst)
		287	= ~((RED(rgb, 3) << 5) \| (GREEN(rgb, 2) << 3) \| BLUE(rgb, 3));
1363	vana	288	}
		289
3725	svoboda	290	/** Draw a filled rectangle.
		291	*
		292	* @note Need real implementation that does not access VRAM twice.
		293	*/
3723	svoboda	294	static void draw_filled_rect(unsigned int x0, unsigned int y0, unsigned int x1,
		295	unsigned int y1, uint32_t color)
		296	{
		297	unsigned int x, y;
3725	svoboda	298	unsigned int copy_bytes;
		299
		300	uint8_t sp, dp;
3723	svoboda	301	uint8_t cbuf[4];
1363	vana	302
3725	svoboda	303	if (y0 >= y1 \|\| x0 >= x1) return;
3723	svoboda	304	screen.rgb_conv(cbuf, color);
		305
3725	svoboda	306	sp = &screen.fb_addr[FB_POS(x0, y0)];
		307	dp = sp;
		308
		309	/* Draw the first line. */
		310	for (x = x0; x < x1; x++) {
		311	memcpy(dp, cbuf, screen.pixelbytes);
		312	dp += screen.pixelbytes;
3723	svoboda	313	}
3725	svoboda	314
		315	dp = sp + screen.scanline;
		316	copy_bytes = (x1 - x0) * screen.pixelbytes;
		317
		318	/* Draw the remaining lines by copying. */
		319	for (y = y0 + 1; y < y1; y++) {
		320	memcpy(dp, sp, copy_bytes);
		321	dp += screen.scanline;
		322	}
3723	svoboda	323	}
		324
		325	/** Redraw viewport.
1498	palkovsky	326	*
3707	decky	327	* @param vport Viewport to redraw
		328	*
1498	palkovsky	329	*/
3707	decky	330	static void vport_redraw(viewport_t *vport)
1485	palkovsky	331	{
3723	svoboda	332	unsigned int row, col;
		333
3707	decky	334	for (row = 0; row < vport->rows; row++) {
3723	svoboda	335	for (col = 0; col < vport->cols; col++) {
3739	svoboda	336	draw_vp_glyph(vport, false, col, row);
3707	decky	337	}
1672	palkovsky	338	}
3723	svoboda	339
3707	decky	340	if (COL2X(vport->cols) < vport->width) {
3723	svoboda	341	draw_filled_rect(
		342	vport->x + COL2X(vport->cols), vport->y,
		343	vport->x + vport->width, vport->y + vport->height,
3767	svoboda	344	vport->attr.bg_color);
1672	palkovsky	345	}
3723	svoboda	346
3707	decky	347	if (ROW2Y(vport->rows) < vport->height) {
3723	svoboda	348	draw_filled_rect(
		349	vport->x, vport->y + ROW2Y(vport->rows),
		350	vport->x + vport->width, vport->y + vport->height,
3767	svoboda	351	vport->attr.bg_color);
1672	palkovsky	352	}
1559	palkovsky	353	}
		354
3767	svoboda	355	static void backbuf_clear(bb_cell_t *backbuf, size_t len, uint32_t fg_color,
		356	uint32_t bg_color)
		357	{
		358	unsigned i;
3707	decky	359
3767	svoboda	360	for (i = 0; i < len; i++) {
		361	backbuf[i].glyph = 0;
		362	backbuf[i].fg_color = fg_color;
		363	backbuf[i].bg_color = bg_color;
		364	}
		365	}
		366
3724	svoboda	367	/** Clear viewport.
3707	decky	368	*
		369	* @param vport Viewport to clear
		370	*
		371	*/
		372	static void vport_clear(viewport_t *vport)
1363	vana	373	{
3767	svoboda	374	backbuf_clear(vport->backbuf, vport->cols * vport->rows,
		375	vport->attr.fg_color, vport->attr.bg_color);
3707	decky	376	vport_redraw(vport);
1363	vana	377	}
		378
3724	svoboda	379	/** Scroll viewport by the specified number of lines.
1485	palkovsky	380	*
1709	jermar	381	* @param vport Viewport to scroll
3707	decky	382	* @param lines Number of lines to scroll
		383	*
1485	palkovsky	384	*/
3707	decky	385	static void vport_scroll(viewport_t *vport, int lines)
1363	vana	386	{
3726	svoboda	387	unsigned int row, col;
3739	svoboda	388	unsigned int x, y;
		389	uint8_t glyph;
3767	svoboda	390	uint32_t fg_color;
		391	uint32_t bg_color;
		392	bb_cell_t bbp, xbp;
3726	svoboda	393
3724	svoboda	394	/*
3739	svoboda	395	* Redraw.
		396	*/
		397
		398	y = vport->y;
		399	for (row = 0; row < vport->rows; row++) {
		400	x = vport->x;
		401	for (col = 0; col < vport->cols; col++) {
		402	if ((row + lines >= 0) && (row + lines < vport->rows)) {
3767	svoboda	403	xbp = &vport->backbuf[BB_POS(vport, col, row + lines)];
		404	bbp = &vport->backbuf[BB_POS(vport, col, row)];
3739	svoboda	405
3767	svoboda	406	glyph = xbp->glyph;
		407	fg_color = xbp->fg_color;
		408	bg_color = xbp->bg_color;
		409
		410	if (bbp->glyph == glyph &&
		411	bbp->fg_color == xbp->fg_color &&
		412	bbp->bg_color == xbp->bg_color) {
3739	svoboda	413	x += FONT_WIDTH;
		414	continue;
		415	}
		416	} else {
		417	glyph = 0;
3767	svoboda	418	fg_color = vport->attr.fg_color;
		419	bg_color = vport->attr.bg_color;
3739	svoboda	420	}
		421
3744	svoboda	422	(*vport->dglyph)(x, y, false, vport->glyphs, glyph,
3767	svoboda	423	fg_color, bg_color);
3739	svoboda	424	x += FONT_WIDTH;
		425	}
		426	y += FONT_SCANLINES;
		427	}
		428
		429	/*
3724	svoboda	430	* Scroll backbuffer.
		431	*/
3723	svoboda	432
1672	palkovsky	433	if (lines > 0) {
3739	svoboda	434	memmove(vport->backbuf, vport->backbuf + vport->cols * lines,
3767	svoboda	435	vport->cols * (vport->rows - lines) * sizeof(bb_cell_t));
		436	backbuf_clear(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)],
		437	vport->cols * lines, vport->attr.fg_color, vport->attr.bg_color);
3707	decky	438	} else {
3739	svoboda	439	memmove(vport->backbuf - vport->cols * lines, vport->backbuf,
3767	svoboda	440	vport->cols * (vport->rows + lines) * sizeof(bb_cell_t));
		441	backbuf_clear(vport->backbuf, - vport->cols * lines,
		442	vport->attr.fg_color, vport->attr.bg_color);
1672	palkovsky	443	}
		444	}
		445
3707	decky	446	/** Render glyphs
1558	palkovsky	447	*
3707	decky	448	* Convert glyphs from device independent font
		449	* description to current visual representation.
		450	*
		451	* @param vport Viewport
		452	*
1558	palkovsky	453	*/
3707	decky	454	static void render_glyphs(viewport_t* vport)
1363	vana	455	{
3707	decky	456	unsigned int glyph;
		457
		458	for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
		459	unsigned int y;
		460
		461	for (y = 0; y < FONT_SCANLINES; y++) {
		462	unsigned int x;
		463
		464	for (x = 0; x < FONT_WIDTH; x++) {
		465	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, false) + x * screen.pixelbytes],
		466	(fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))
3744	svoboda	467	? 0xffffff : 0x000000);
3707	decky	468
3744	svoboda	469	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes],
		470	(fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))
		471	? 0x000000 : 0xffffff);
3707	decky	472	}
1509	palkovsky	473	}
		474	}
3707	decky	475
3767	svoboda	476	screen.rgb_conv(vport->bgpixel, vport->attr.bg_color);
1363	vana	477	}
		478
		479
1485	palkovsky	480	/** Create new viewport
1363	vana	481	*
3707	decky	482	* @param x Origin of the viewport (x).
		483	* @param y Origin of the viewport (y).
		484	* @param width Width of the viewport.
		485	* @param height Height of the viewport.
		486	*
		487	* @return New viewport number.
		488	*
1363	vana	489	*/
3707	decky	490	static int vport_create(unsigned int x, unsigned int y,
		491	unsigned int width, unsigned int height)
1363	vana	492	{
3707	decky	493	unsigned int i;
		494
2070	jermar	495	for (i = 0; i < MAX_VIEWPORTS; i++) {
1485	palkovsky	496	if (!viewports[i].initialized)
1363	vana	497	break;
		498	}
1485	palkovsky	499	if (i == MAX_VIEWPORTS)
		500	return ELIMIT;
3707	decky	501
		502	unsigned int cols = width / FONT_WIDTH;
		503	unsigned int rows = height / FONT_SCANLINES;
3767	svoboda	504	unsigned int bbsize = cols * rows * sizeof(bb_cell_t);
3707	decky	505	unsigned int glyphsize = 2 * FONT_GLYPHS * screen.glyphbytes;
3744	svoboda	506	unsigned int word_size = sizeof(unsigned long);
3707	decky	507
3767	svoboda	508	bb_cell_t backbuf = (bb_cell_t ) malloc(bbsize);
3707	decky	509	if (!backbuf)
		510	return ENOMEM;
		511
		512	uint8_t glyphs = (uint8_t ) malloc(glyphsize);
		513	if (!glyphs) {
		514	free(backbuf);
		515	return ENOMEM;
		516	}
		517
		518	uint8_t bgpixel = (uint8_t ) malloc(screen.pixelbytes);
		519	if (!bgpixel) {
		520	free(glyphs);
		521	free(backbuf);
		522	return ENOMEM;
		523	}
3767	svoboda	524
		525	backbuf_clear(backbuf, cols * rows, DEFAULT_FGCOLOR, DEFAULT_BGCOLOR);
3707	decky	526	memset(glyphs, 0, glyphsize);
		527	memset(bgpixel, 0, screen.pixelbytes);
		528
1485	palkovsky	529	viewports[i].x = x;
		530	viewports[i].y = y;
		531	viewports[i].width = width;
		532	viewports[i].height = height;
1363	vana	533
3707	decky	534	viewports[i].cols = cols;
		535	viewports[i].rows = rows;
		536
3767	svoboda	537	viewports[i].attr.bg_color = DEFAULT_BGCOLOR;
		538	viewports[i].attr.fg_color = DEFAULT_FGCOLOR;
1363	vana	539
3707	decky	540	viewports[i].glyphs = glyphs;
		541	viewports[i].bgpixel = bgpixel;
3744	svoboda	542
		543	/*
		544	* Conditions necessary to select aligned version:
		545	*
		546	* - word size is divisible by pixelbytes
		547	* - cell scanline size is divisible by word size
		548	* - cell scanlines are word-aligned
		549	*/
		550	if ((word_size % screen.pixelbytes) == 0 &&
		551	(FONT_WIDTH * screen.pixelbytes) % word_size == 0 &&
		552	(x * screen.pixelbytes) % word_size == 0 &&
		553	screen.scanline % word_size == 0) {
		554
		555	viewports[i].dglyph = draw_glyph_aligned;
		556	} else {
		557	viewports[i].dglyph = draw_glyph_fallback;
		558	}
		559
1489	palkovsky	560	viewports[i].cur_col = 0;
		561	viewports[i].cur_row = 0;
3707	decky	562	viewports[i].cursor_active = false;
		563	viewports[i].cursor_shown = false;
		564
		565	viewports[i].bbsize = bbsize;
		566	viewports[i].backbuf = backbuf;
		567
		568	viewports[i].initialized = true;
		569
		570	render_glyphs(&viewports[i]);
		571
1485	palkovsky	572	return i;
1363	vana	573	}
		574
3707	decky	575
1363	vana	576	/** Initialize framebuffer as a chardev output device
		577	*
3707	decky	578	* @param addr Address of the framebuffer
		579	* @param xres Screen width in pixels
		580	* @param yres Screen height in pixels
		581	* @param visual Bits per pixel (8, 16, 24, 32)
		582	* @param scan Bytes per one scanline
1363	vana	583	*
		584	*/
3707	decky	585	static bool screen_init(void *addr, unsigned int xres, unsigned int yres,
		586	unsigned int scan, unsigned int visual)
1363	vana	587	{
1993	decky	588	switch (visual) {
		589	case VISUAL_INDIRECT_8:
3707	decky	590	screen.rgb_conv = rgb_323;
1886	jermar	591	screen.pixelbytes = 1;
		592	break;
1993	decky	593	case VISUAL_RGB_5_5_5:
3707	decky	594	screen.rgb_conv = rgb_555;
1886	jermar	595	screen.pixelbytes = 2;
		596	break;
1993	decky	597	case VISUAL_RGB_5_6_5:
3707	decky	598	screen.rgb_conv = rgb_565;
1993	decky	599	screen.pixelbytes = 2;
1886	jermar	600	break;
1993	decky	601	case VISUAL_RGB_8_8_8:
3707	decky	602	screen.rgb_conv = rgb_888;
1993	decky	603	screen.pixelbytes = 3;
		604	break;
3882	decky	605	case VISUAL_BGR_8_8_8:
		606	screen.rgb_conv = bgr_888;
		607	screen.pixelbytes = 3;
		608	break;
1993	decky	609	case VISUAL_RGB_8_8_8_0:
3707	decky	610	screen.rgb_conv = rgb_888;
1886	jermar	611	screen.pixelbytes = 4;
		612	break;
1993	decky	613	case VISUAL_RGB_0_8_8_8:
3707	decky	614	screen.rgb_conv = rgb_0888;
1993	decky	615	screen.pixelbytes = 4;
		616	break;
1994	decky	617	case VISUAL_BGR_0_8_8_8:
3707	decky	618	screen.rgb_conv = bgr_0888;
1994	decky	619	screen.pixelbytes = 4;
		620	break;
1993	decky	621	default:
		622	return false;
1363	vana	623	}
		624
3707	decky	625	screen.fb_addr = (unsigned char *) addr;
1485	palkovsky	626	screen.xres = xres;
		627	screen.yres = yres;
		628	screen.scanline = scan;
1363	vana	629
3707	decky	630	screen.glyphscanline = FONT_WIDTH * screen.pixelbytes;
		631	screen.glyphbytes = screen.glyphscanline * FONT_SCANLINES;
		632
1485	palkovsky	633	/* Create first viewport */
3707	decky	634	vport_create(0, 0, xres, yres);
1993	decky	635
		636	return true;
1485	palkovsky	637	}
1363	vana	638
3707	decky	639
3744	svoboda	640	/** Draw a glyph, takes advantage of alignment.
3707	decky	641	*
3744	svoboda	642	* This version can only be used if the following conditions are met:
3739	svoboda	643	*
3744	svoboda	644	* - word size is divisible by pixelbytes
		645	* - cell scanline size is divisible by word size
		646	* - cell scanlines are word-aligned
		647	*
		648	* It makes use of the pre-rendered mask to process (possibly) several
		649	* pixels at once (word size / pixelbytes pixels at a time are processed)
		650	* making it very fast. Most notably this version is not applicable at 24 bits
		651	* per pixel.
		652	*
		653	* @param x x coordinate of top-left corner on screen.
		654	* @param y y coordinate of top-left corner on screen.
		655	* @param cursor Draw glyph with cursor
		656	* @param glyphs Pointer to font bitmap.
		657	* @param glyph Code of the glyph to draw.
		658	* @param fg_color Foreground color.
		659	* @param bg_color Backgroudn color.
3739	svoboda	660	*/
3744	svoboda	661	static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
4211	svoboda	662	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color)
3739	svoboda	663	{
3744	svoboda	664	unsigned int i, yd;
		665	unsigned long fg_buf, bg_buf;
		666	unsigned long maskp, dp;
		667	unsigned long mask;
		668	unsigned int ww, d_add;
		669
4211	svoboda	670	/* Check glyph range. */
		671	if (glyph >= FONT_GLYPHS)
		672	return;
		673
3744	svoboda	674	/*
		675	* Prepare a pair of words, one filled with foreground-color
		676	* pattern and the other filled with background-color pattern.
		677	*/
		678	for (i = 0; i < sizeof(unsigned long) / screen.pixelbytes; i++) {
		679	screen.rgb_conv(&((uint8_t )&fg_buf)[i screen.pixelbytes],
		680	fg_color);
		681	screen.rgb_conv(&((uint8_t )&bg_buf)[i screen.pixelbytes],
		682	bg_color);
		683	}
		684
		685	/* Pointer to the current position in the mask. */
		686	maskp = (unsigned long *) &glyphs[GLYPH_POS(glyph, 0, cursor)];
		687
		688	/* Pointer to the current position on the screen. */
		689	dp = (unsigned long *) &screen.fb_addr[FB_POS(x, y)];
		690
		691	/* Width of the character cell in words. */
		692	ww = FONT_WIDTH * screen.pixelbytes / sizeof(unsigned long);
		693
		694	/* Offset to add when moving to another screen scanline. */
		695	d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
		696
		697	for (yd = 0; yd < FONT_SCANLINES; yd++) {
		698	/*
		699	* Now process the cell scanline, combining foreground
		700	* and background color patters using the pre-rendered mask.
		701	*/
		702	for (i = 0; i < ww; i++) {
		703	mask = *maskp++;
		704	*dp++ = (fg_buf & mask) \| (bg_buf & ~mask);
		705	}
		706
		707	/* Move to the beginning of the next scanline of the cell. */
		708	dp = (unsigned long ) ((uint8_t ) dp + d_add);
		709	}
3739	svoboda	710	}
		711
3744	svoboda	712	/** Draw a glyph, fallback version.
		713	*
		714	* This version does not make use of the pre-rendered mask, it uses
		715	* the font bitmap directly. It works always, but it is slower.
		716	*
		717	* @param x x coordinate of top-left corner on screen.
		718	* @param y y coordinate of top-left corner on screen.
		719	* @param cursor Draw glyph with cursor
		720	* @param glyphs Pointer to font bitmap.
		721	* @param glyph Code of the glyph to draw.
		722	* @param fg_color Foreground color.
		723	* @param bg_color Backgroudn color.
		724	*/
		725	void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
4211	svoboda	726	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color)
3744	svoboda	727	{
		728	unsigned int i, j, yd;
		729	uint8_t fg_buf[4], bg_buf[4];
		730	uint8_t dp, sp;
		731	unsigned int d_add;
		732	uint8_t b;
		733
4211	svoboda	734	/* Check glyph range. */
		735	if (glyph >= FONT_GLYPHS)
		736	return;
		737
3744	svoboda	738	/* Pre-render 1x the foreground and background color pixels. */
		739	if (cursor) {
		740	screen.rgb_conv(fg_buf, bg_color);
		741	screen.rgb_conv(bg_buf, fg_color);
		742	} else {
		743	screen.rgb_conv(fg_buf, fg_color);
		744	screen.rgb_conv(bg_buf, bg_color);
		745	}
		746
		747	/* Pointer to the current position on the screen. */
		748	dp = (uint8_t *) &screen.fb_addr[FB_POS(x, y)];
		749
		750	/* Offset to add when moving to another screen scanline. */
		751	d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
		752
		753	for (yd = 0; yd < FONT_SCANLINES; yd++) {
		754	/* Byte containing bits of the glyph scanline. */
		755	b = fb_font[glyph * FONT_SCANLINES + yd];
		756
		757	for (i = 0; i < FONT_WIDTH; i++) {
		758	/* Choose color based on the current bit. */
		759	sp = (b & 0x80) ? fg_buf : bg_buf;
		760
		761	/* Copy the pixel. */
		762	for (j = 0; j < screen.pixelbytes; j++) {
		763	dp++ = sp++;
		764	}
		765
		766	/* Move to the next bit. */
		767	b = b << 1;
		768	}
		769
		770	/* Move to the beginning of the next scanline of the cell. */
		771	dp += d_add;
		772	}
		773	}
		774
3739	svoboda	775	/** Draw glyph at specified position in viewport.
		776	*
3707	decky	777	* @param vport Viewport identification
		778	* @param cursor Draw glyph with cursor
		779	* @param col Screen position relative to viewport
		780	* @param row Screen position relative to viewport
		781	*
		782	*/
3739	svoboda	783	static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
		784	unsigned int row)
1500	palkovsky	785	{
3707	decky	786	unsigned int x = vport->x + COL2X(col);
		787	unsigned int y = vport->y + ROW2Y(row);
3767	svoboda	788
4211	svoboda	789	uint32_t glyph;
3767	svoboda	790	uint32_t fg_color;
		791	uint32_t bg_color;
3707	decky	792
3767	svoboda	793	glyph = vport->backbuf[BB_POS(vport, col, row)].glyph;
		794	fg_color = vport->backbuf[BB_POS(vport, col, row)].fg_color;
		795	bg_color = vport->backbuf[BB_POS(vport, col, row)].bg_color;
3744	svoboda	796
		797	(*vport->dglyph)(x, y, cursor, vport->glyphs, glyph,
3767	svoboda	798	fg_color, bg_color);
3707	decky	799	}
		800
		801	/** Hide cursor if it is shown
		802	*
		803	*/
		804	static void cursor_hide(viewport_t *vport)
		805	{
		806	if ((vport->cursor_active) && (vport->cursor_shown)) {
3739	svoboda	807	draw_vp_glyph(vport, false, vport->cur_col, vport->cur_row);
3707	decky	808	vport->cursor_shown = false;
1500	palkovsky	809	}
		810	}
		811
3707	decky	812
		813	/** Show cursor if cursor showing is enabled
		814	*
		815	*/
		816	static void cursor_show(viewport_t *vport)
1500	palkovsky	817	{
		818	/* Do not check for cursor_shown */
		819	if (vport->cursor_active) {
3739	svoboda	820	draw_vp_glyph(vport, true, vport->cur_col, vport->cur_row);
3707	decky	821	vport->cursor_shown = true;
1500	palkovsky	822	}
		823	}
		824
3707	decky	825
		826	/** Invert cursor, if it is enabled
		827	*
		828	*/
		829	static void cursor_blink(viewport_t *vport)
1500	palkovsky	830	{
		831	if (vport->cursor_shown)
1673	palkovsky	832	cursor_hide(vport);
1500	palkovsky	833	else
3707	decky	834	cursor_show(vport);
1500	palkovsky	835	}
		836
3707	decky	837
		838	/** Draw character at given position relative to viewport
		839	*
		840	* @param vport Viewport identification
		841	* @param c Character to draw
		842	* @param col Screen position relative to viewport
		843	* @param row Screen position relative to viewport
		844	*
1498	palkovsky	845	*/
4211	svoboda	846	static void draw_char(viewport_t *vport, wchar_t c, unsigned int col, unsigned int row)
1486	palkovsky	847	{
3767	svoboda	848	bb_cell_t *bbp;
		849
3707	decky	850	/* Do not hide cursor if we are going to overwrite it */
		851	if ((vport->cursor_active) && (vport->cursor_shown) &&
		852	((vport->cur_col != col) \|\| (vport->cur_row != row)))
		853	cursor_hide(vport);
3767	svoboda	854
		855	bbp = &vport->backbuf[BB_POS(vport, col, row)];
4211	svoboda	856	bbp->glyph = (uint32_t) c;
3767	svoboda	857	bbp->fg_color = vport->attr.fg_color;
		858	bbp->bg_color = vport->attr.bg_color;
		859
3739	svoboda	860	draw_vp_glyph(vport, false, col, row);
3707	decky	861
1489	palkovsky	862	vport->cur_col = col;
		863	vport->cur_row = row;
3707	decky	864
1489	palkovsky	865	vport->cur_col++;
2025	jermar	866	if (vport->cur_col >= vport->cols) {
1489	palkovsky	867	vport->cur_col = 0;
		868	vport->cur_row++;
		869	if (vport->cur_row >= vport->rows)
		870	vport->cur_row--;
1486	palkovsky	871	}
3707	decky	872
		873	cursor_show(vport);
1486	palkovsky	874	}
		875
4167	svoboda	876	/** Draw text data to viewport.
1552	palkovsky	877	*
1709	jermar	878	* @param vport Viewport id
4167	svoboda	879	* @param data Text data.
		880	* @param x Leftmost column of the area.
		881	* @param y Topmost row of the area.
		882	* @param w Number of rows.
		883	* @param h Number of columns.
1552	palkovsky	884	*/
4167	svoboda	885	static void draw_text_data(viewport_t vport, keyfield_t data, unsigned int x,
		886	unsigned int y, unsigned int w, unsigned int h)
1505	palkovsky	887	{
4167	svoboda	888	unsigned int i, j;
3767	svoboda	889	bb_cell_t *bbp;
		890	attrs_t *a;
		891	attr_rgb_t rgb;
		892
4167	svoboda	893	for (j = 0; j < h; j++) {
		894	for (i = 0; i < w; i++) {
		895	unsigned int col = x + i;
		896	unsigned int row = y + j;
3767	svoboda	897
4167	svoboda	898	bbp = &vport->backbuf[BB_POS(vport, col, row)];
4211	svoboda	899	uint32_t glyph = bbp->glyph;
3767	svoboda	900
4167	svoboda	901	a = &data[j * w + i].attrs;
		902	rgb_from_attr(&rgb, a);
		903
		904	bbp->glyph = data[j * w + i].character;
		905	bbp->fg_color = rgb.fg_color;
		906	bbp->bg_color = rgb.bg_color;
		907
		908	draw_vp_glyph(vport, false, col, row);
		909	}
1505	palkovsky	910	}
3707	decky	911	cursor_show(vport);
1505	palkovsky	912	}
		913
3707	decky	914
		915	static void putpixel_pixmap(void *data, unsigned int x, unsigned int y, uint32_t color)
1555	palkovsky	916	{
3707	decky	917	int pm = ((int ) data);
		918	pixmap_t *pmap = &pixmaps[pm];
		919	unsigned int pos = (y * pmap->width + x) * screen.pixelbytes;
1555	palkovsky	920
3707	decky	921	screen.rgb_conv(&pmap->data[pos], color);
		922	}
		923
		924
		925	static void putpixel(void *data, unsigned int x, unsigned int y, uint32_t color)
		926	{
		927	viewport_t vport = (viewport_t ) data;
		928	unsigned int dx = vport->x + x;
		929	unsigned int dy = vport->y + y;
		930
		931	screen.rgb_conv(&screen.fb_addr[FB_POS(dx, dy)], color);
		932	}
		933
		934
		935	/** Return first free pixmap
		936	*
		937	*/
		938	static int find_free_pixmap(void)
		939	{
		940	unsigned int i;
		941
		942	for (i = 0; i < MAX_PIXMAPS; i++)
1555	palkovsky	943	if (!pixmaps[i].data)
		944	return i;
3707	decky	945
1555	palkovsky	946	return -1;
		947	}
		948
		949
3707	decky	950	/** Create a new pixmap and return appropriate ID
		951	*
		952	*/
		953	static int shm2pixmap(unsigned char *shm, size_t size)
1555	palkovsky	954	{
		955	int pm;
		956	pixmap_t *pmap;
3707	decky	957
1555	palkovsky	958	pm = find_free_pixmap();
		959	if (pm == -1)
		960	return ELIMIT;
3707	decky	961
1555	palkovsky	962	pmap = &pixmaps[pm];
		963
		964	if (ppm_get_data(shm, size, &pmap->width, &pmap->height))
		965	return EINVAL;
		966
		967	pmap->data = malloc(pmap->width * pmap->height * screen.pixelbytes);
		968	if (!pmap->data)
		969	return ENOMEM;
3707	decky	970
		971	ppm_draw(shm, size, 0, 0, pmap->width, pmap->height, putpixel_pixmap, (void *) &pm);
		972
1555	palkovsky	973	return pm;
		974	}
		975
3707	decky	976
1552	palkovsky	977	/** Handle shared memory communication calls
		978	*
		979	* Protocol for drawing pixmaps:
		980	* - FB_PREPARE_SHM(client shm identification)
2025	jermar	981	* - IPC_M_AS_AREA_SEND
3707	decky	982	* - FB_DRAW_PPM(startx, starty)
1552	palkovsky	983	* - FB_DROP_SHM
		984	*
		985	* Protocol for text drawing
2025	jermar	986	* - IPC_M_AS_AREA_SEND
1552	palkovsky	987	* - FB_DRAW_TEXT_DATA
		988	*
		989	* @param callid Callid of the current call
3707	decky	990	* @param call Current call data
		991	* @param vp Active viewport
1552	palkovsky	992	*
3707	decky	993	* @return false if the call was not handled byt this function, true otherwise
		994	*
		995	* Note: this function is not threads safe, you would have
1552	palkovsky	996	* to redefine static variables with __thread
3707	decky	997	*
1552	palkovsky	998	*/
3707	decky	999	static bool shm_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
1547	palkovsky	1000	{
		1001	static keyfield_t *interbuffer = NULL;
		1002	static size_t intersize = 0;
3707	decky	1003
1720	palkovsky	1004	static unsigned char *shm = NULL;
1555	palkovsky	1005	static ipcarg_t shm_id = 0;
		1006	static size_t shm_size;
3707	decky	1007
		1008	bool handled = true;
		1009	int retval = EOK;
1547	palkovsky	1010	viewport_t *vport = &viewports[vp];
3707	decky	1011	unsigned int x;
		1012	unsigned int y;
4167	svoboda	1013	unsigned int w;
		1014	unsigned int h;
3707	decky	1015
1547	palkovsky	1016	switch (IPC_GET_METHOD(*call)) {
2677	jermar	1017	case IPC_M_SHARE_OUT:
1547	palkovsky	1018	/* We accept one area for data interchange */
1555	palkovsky	1019	if (IPC_GET_ARG1(*call) == shm_id) {
2141	jermar	1020	void dest = as_get_mappable_page(IPC_GET_ARG2(call));
1555	palkovsky	1021	shm_size = IPC_GET_ARG2(*call);
3707	decky	1022	if (!ipc_answer_1(callid, EOK, (sysarg_t) dest))
1555	palkovsky	1023	shm = dest;
1547	palkovsky	1024	else
1555	palkovsky	1025	shm_id = 0;
3707	decky	1026
1555	palkovsky	1027	if (shm[0] != 'P')
3707	decky	1028	return false;
		1029
		1030	return true;
1547	palkovsky	1031	} else {
		1032	intersize = IPC_GET_ARG2(*call);
2015	jermar	1033	receive_comm_area(callid, call, (void *) &interbuffer);
1547	palkovsky	1034	}
3707	decky	1035	return true;
1547	palkovsky	1036	case FB_PREPARE_SHM:
1555	palkovsky	1037	if (shm_id)
1547	palkovsky	1038	retval = EBUSY;
		1039	else
1555	palkovsky	1040	shm_id = IPC_GET_ARG1(*call);
1547	palkovsky	1041	break;
		1042
		1043	case FB_DROP_SHM:
1555	palkovsky	1044	if (shm) {
		1045	as_area_destroy(shm);
		1046	shm = NULL;
1547	palkovsky	1047	}
1555	palkovsky	1048	shm_id = 0;
1547	palkovsky	1049	break;
3707	decky	1050
1555	palkovsky	1051	case FB_SHM2PIXMAP:
		1052	if (!shm) {
		1053	retval = EINVAL;
		1054	break;
		1055	}
		1056	retval = shm2pixmap(shm, shm_size);
		1057	break;
1547	palkovsky	1058	case FB_DRAW_PPM:
1555	palkovsky	1059	if (!shm) {
1547	palkovsky	1060	retval = EINVAL;
		1061	break;
		1062	}
		1063	x = IPC_GET_ARG1(*call);
		1064	y = IPC_GET_ARG2(*call);
3707	decky	1065
		1066	if ((x > vport->width) \|\| (y > vport->height)) {
1547	palkovsky	1067	retval = EINVAL;
		1068	break;
		1069	}
		1070
2025	jermar	1071	ppm_draw(shm, shm_size, IPC_GET_ARG1(*call),
3707	decky	1072	IPC_GET_ARG2(call), vport->width - x, vport->height - y, putpixel, (void ) vport);
1547	palkovsky	1073	break;
		1074	case FB_DRAW_TEXT_DATA:
4167	svoboda	1075	x = IPC_GET_ARG1(*call);
		1076	y = IPC_GET_ARG2(*call);
		1077	w = IPC_GET_ARG3(*call);
		1078	h = IPC_GET_ARG4(*call);
1547	palkovsky	1079	if (!interbuffer) {
		1080	retval = EINVAL;
		1081	break;
		1082	}
4167	svoboda	1083	if (x + w > vport->cols \|\| y + h > vport->rows) {
1547	palkovsky	1084	retval = EINVAL;
		1085	break;
		1086	}
4167	svoboda	1087	if (intersize < w * h * sizeof(*interbuffer)) {
		1088	retval = EINVAL;
		1089	break;
		1090	}
		1091	draw_text_data(vport, interbuffer, x, y, w, h);
1547	palkovsky	1092	break;
		1093	default:
3707	decky	1094	handled = false;
1547	palkovsky	1095	}
		1096
		1097	if (handled)
2619	jermar	1098	ipc_answer_0(callid, retval);
1547	palkovsky	1099	return handled;
		1100	}
		1101
3707	decky	1102
		1103	static void copy_vp_to_pixmap(viewport_t vport, pixmap_t pmap)
1552	palkovsky	1104	{
3707	decky	1105	unsigned int width = vport->width;
		1106	unsigned int height = vport->height;
		1107
1711	palkovsky	1108	if (width + vport->x > screen.xres)
		1109	width = screen.xres - vport->x;
2301	decky	1110	if (height + vport->y > screen.yres)
1711	palkovsky	1111	height = screen.yres - vport->y;
2301	decky	1112
3707	decky	1113	unsigned int realwidth = pmap->width <= width ? pmap->width : width;
		1114	unsigned int realheight = pmap->height <= height ? pmap->height : height;
2301	decky	1115
3707	decky	1116	unsigned int srcrowsize = vport->width * screen.pixelbytes;
		1117	unsigned int realrowsize = realwidth * screen.pixelbytes;
		1118
		1119	unsigned int y;
2301	decky	1120	for (y = 0; y < realheight; y++) {
3707	decky	1121	unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
		1122	memcpy(pmap->data + srcrowsize * y, screen.fb_addr + tmp, realrowsize);
1711	palkovsky	1123	}
		1124	}
		1125
3707	decky	1126
		1127	/** Save viewport to pixmap
		1128	*
		1129	*/
		1130	static int save_vp_to_pixmap(viewport_t *vport)
1711	palkovsky	1131	{
		1132	int pm;
		1133	pixmap_t *pmap;
3707	decky	1134
1552	palkovsky	1135	pm = find_free_pixmap();
		1136	if (pm == -1)
		1137	return ELIMIT;
		1138
		1139	pmap = &pixmaps[pm];
		1140	pmap->data = malloc(screen.pixelbytes * vport->width * vport->height);
		1141	if (!pmap->data)
		1142	return ENOMEM;
3707	decky	1143
1552	palkovsky	1144	pmap->width = vport->width;
		1145	pmap->height = vport->height;
3707	decky	1146
1711	palkovsky	1147	copy_vp_to_pixmap(vport, pmap);
1552	palkovsky	1148
		1149	return pm;
		1150	}
		1151
3707	decky	1152
1552	palkovsky	1153	/** Draw pixmap on screen
		1154	*
		1155	* @param vp Viewport to draw on
		1156	* @param pm Pixmap identifier
3707	decky	1157	*
1552	palkovsky	1158	*/
		1159	static int draw_pixmap(int vp, int pm)
		1160	{
		1161	pixmap_t *pmap = &pixmaps[pm];
		1162	viewport_t *vport = &viewports[vp];
3707	decky	1163
		1164	unsigned int width = vport->width;
		1165	unsigned int height = vport->height;
		1166
1711	palkovsky	1167	if (width + vport->x > screen.xres)
		1168	width = screen.xres - vport->x;
		1169	if (height + vport->y > screen.yres)
		1170	height = screen.yres - vport->y;
3707	decky	1171
1552	palkovsky	1172	if (!pmap->data)
		1173	return EINVAL;
3707	decky	1174
		1175	unsigned int realwidth = pmap->width <= width ? pmap->width : width;
		1176	unsigned int realheight = pmap->height <= height ? pmap->height : height;
		1177
		1178	unsigned int srcrowsize = vport->width * screen.pixelbytes;
		1179	unsigned int realrowsize = realwidth * screen.pixelbytes;
		1180
		1181	unsigned int y;
2070	jermar	1182	for (y = 0; y < realheight; y++) {
3707	decky	1183	unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
		1184	memcpy(screen.fb_addr + tmp, pmap->data + y * srcrowsize, realrowsize);
1552	palkovsky	1185	}
3707	decky	1186
		1187	return EOK;
1552	palkovsky	1188	}
		1189
3707	decky	1190
		1191	/** Tick animation one step forward
		1192	*
		1193	*/
		1194	static void anims_tick(void)
1646	palkovsky	1195	{
3707	decky	1196	unsigned int i;
1646	palkovsky	1197	static int counts = 0;
		1198
		1199	/* Limit redrawing */
2025	jermar	1200	counts = (counts + 1) % 8;
1646	palkovsky	1201	if (counts)
		1202	return;
		1203
2070	jermar	1204	for (i = 0; i < MAX_ANIMATIONS; i++) {
3707	decky	1205	if ((!animations[i].animlen) \|\| (!animations[i].initialized) \|\|
		1206	(!animations[i].enabled))
1646	palkovsky	1207	continue;
3707	decky	1208
		1209	draw_pixmap(animations[i].vp, animations[i].pixmaps[animations[i].pos]);
		1210	animations[i].pos = (animations[i].pos + 1) % animations[i].animlen;
1646	palkovsky	1211	}
		1212	}
		1213
1711	palkovsky	1214
3707	decky	1215	static unsigned int pointer_x;
		1216	static unsigned int pointer_y;
		1217	static bool pointer_shown, pointer_enabled;
1711	palkovsky	1218	static int pointer_vport = -1;
		1219	static int pointer_pixmap = -1;
		1220
3707	decky	1221
		1222	static void mouse_show(void)
1711	palkovsky	1223	{
2070	jermar	1224	int i, j;
1711	palkovsky	1225	int visibility;
		1226	int color;
		1227	int bytepos;
3707	decky	1228
		1229	if ((pointer_shown) \|\| (!pointer_enabled))
1723	palkovsky	1230	return;
3707	decky	1231
3723	svoboda	1232	/* Save image under the pointer. */
1711	palkovsky	1233	if (pointer_vport == -1) {
3707	decky	1234	pointer_vport = vport_create(pointer_x, pointer_y, pointer_width, pointer_height);
1711	palkovsky	1235	if (pointer_vport < 0)
		1236	return;
		1237	} else {
		1238	viewports[pointer_vport].x = pointer_x;
		1239	viewports[pointer_vport].y = pointer_y;
		1240	}
3707	decky	1241
1711	palkovsky	1242	if (pointer_pixmap == -1)
		1243	pointer_pixmap = save_vp_to_pixmap(&viewports[pointer_vport]);
		1244	else
3707	decky	1245	copy_vp_to_pixmap(&viewports[pointer_vport], &pixmaps[pointer_pixmap]);
		1246
3723	svoboda	1247	/* Draw mouse pointer. */
2025	jermar	1248	for (i = 0; i < pointer_height; i++)
		1249	for (j = 0; j < pointer_width; j++) {
		1250	bytepos = i * ((pointer_width - 1) / 8 + 1) + j / 8;
2070	jermar	1251	visibility = pointer_mask_bits[bytepos] &
2619	jermar	1252	(1 << (j % 8));
1711	palkovsky	1253	if (visibility) {
2619	jermar	1254	color = pointer_bits[bytepos] &
		1255	(1 << (j % 8)) ? 0 : 0xffffff;
2025	jermar	1256	if (pointer_x + j < screen.xres && pointer_y +
2619	jermar	1257	i < screen.yres)
2025	jermar	1258	putpixel(&viewports[0], pointer_x + j,
2619	jermar	1259	pointer_y + i, color);
1711	palkovsky	1260	}
		1261	}
		1262	pointer_shown = 1;
		1263	}
		1264
3707	decky	1265
		1266	static void mouse_hide(void)
1711	palkovsky	1267	{
3723	svoboda	1268	/* Restore image under the pointer. */
1711	palkovsky	1269	if (pointer_shown) {
		1270	draw_pixmap(pointer_vport, pointer_pixmap);
		1271	pointer_shown = 0;
		1272	}
		1273	}
		1274
3707	decky	1275
		1276	static void mouse_move(unsigned int x, unsigned int y)
1711	palkovsky	1277	{
		1278	mouse_hide();
		1279	pointer_x = x;
		1280	pointer_y = y;
		1281	mouse_show();
		1282	}
		1283
3707	decky	1284
		1285	static int anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
1646	palkovsky	1286	{
3707	decky	1287	bool handled = true;
		1288	int retval = EOK;
		1289	int i, nvp;
1646	palkovsky	1290	int newval;
3707	decky	1291
1646	palkovsky	1292	switch (IPC_GET_METHOD(*call)) {
		1293	case FB_ANIM_CREATE:
		1294	nvp = IPC_GET_ARG1(*call);
		1295	if (nvp == -1)
		1296	nvp = vp;
2025	jermar	1297	if (nvp >= MAX_VIEWPORTS \|\| nvp < 0 \|\|
		1298	!viewports[nvp].initialized) {
1646	palkovsky	1299	retval = EINVAL;
		1300	break;
		1301	}
2025	jermar	1302	for (i = 0; i < MAX_ANIMATIONS; i++) {
		1303	if (!animations[i].initialized)
1646	palkovsky	1304	break;
		1305	}
		1306	if (i == MAX_ANIMATIONS) {
		1307	retval = ELIMIT;
		1308	break;
		1309	}
		1310	animations[i].initialized = 1;
		1311	animations[i].animlen = 0;
		1312	animations[i].pos = 0;
		1313	animations[i].enabled = 0;
		1314	animations[i].vp = nvp;
		1315	retval = i;
		1316	break;
		1317	case FB_ANIM_DROP:
		1318	i = IPC_GET_ARG1(*call);
1720	palkovsky	1319	if (i >= MAX_ANIMATIONS \|\| i < 0) {
1646	palkovsky	1320	retval = EINVAL;
		1321	break;
		1322	}
		1323	animations[i].initialized = 0;
		1324	break;
		1325	case FB_ANIM_ADDPIXMAP:
		1326	i = IPC_GET_ARG1(*call);
2025	jermar	1327	if (i >= MAX_ANIMATIONS \|\| i < 0 \|\|
		1328	!animations[i].initialized) {
1646	palkovsky	1329	retval = EINVAL;
		1330	break;
		1331	}
		1332	if (animations[i].animlen == MAX_ANIM_LEN) {
		1333	retval = ELIMIT;
		1334	break;
		1335	}
		1336	newval = IPC_GET_ARG2(*call);
2025	jermar	1337	if (newval < 0 \|\| newval > MAX_PIXMAPS \|\|
		1338	!pixmaps[newval].data) {
1646	palkovsky	1339	retval = EINVAL;
		1340	break;
		1341	}
		1342	animations[i].pixmaps[animations[i].animlen++] = newval;
		1343	break;
		1344	case FB_ANIM_CHGVP:
		1345	i = IPC_GET_ARG1(*call);
		1346	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1347	retval = EINVAL;
		1348	break;
		1349	}
		1350	nvp = IPC_GET_ARG2(*call);
		1351	if (nvp == -1)
		1352	nvp = vp;
2025	jermar	1353	if (nvp >= MAX_VIEWPORTS \|\| nvp < 0 \|\|
		1354	!viewports[nvp].initialized) {
1646	palkovsky	1355	retval = EINVAL;
		1356	break;
		1357	}
		1358	animations[i].vp = nvp;
		1359	break;
		1360	case FB_ANIM_START:
		1361	case FB_ANIM_STOP:
		1362	i = IPC_GET_ARG1(*call);
		1363	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1364	retval = EINVAL;
		1365	break;
		1366	}
		1367	newval = (IPC_GET_METHOD(*call) == FB_ANIM_START);
		1368	if (newval ^ animations[i].enabled) {
		1369	animations[i].enabled = newval;
		1370	anims_enabled += newval ? 1 : -1;
		1371	}
		1372	break;
		1373	default:
		1374	handled = 0;
		1375	}
		1376	if (handled)
2619	jermar	1377	ipc_answer_0(callid, retval);
1646	palkovsky	1378	return handled;
		1379	}
		1380
3707	decky	1381
		1382	/** Handler for messages concerning pixmap handling
		1383	*
		1384	*/
		1385	static int pixmap_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
1552	palkovsky	1386	{
3707	decky	1387	bool handled = true;
		1388	int retval = EOK;
		1389	int i, nvp;
		1390
1552	palkovsky	1391	switch (IPC_GET_METHOD(*call)) {
		1392	case FB_VP_DRAW_PIXMAP:
		1393	nvp = IPC_GET_ARG1(*call);
		1394	if (nvp == -1)
		1395	nvp = vp;
2025	jermar	1396	if (nvp < 0 \|\| nvp >= MAX_VIEWPORTS \|\|
		1397	!viewports[nvp].initialized) {
1552	palkovsky	1398	retval = EINVAL;
		1399	break;
		1400	}
		1401	i = IPC_GET_ARG2(*call);
		1402	retval = draw_pixmap(nvp, i);
		1403	break;
		1404	case FB_VP2PIXMAP:
		1405	nvp = IPC_GET_ARG1(*call);
		1406	if (nvp == -1)
		1407	nvp = vp;
2025	jermar	1408	if (nvp < 0 \|\| nvp >= MAX_VIEWPORTS \|\|
		1409	!viewports[nvp].initialized)
1552	palkovsky	1410	retval = EINVAL;
		1411	else
1711	palkovsky	1412	retval = save_vp_to_pixmap(&viewports[nvp]);
1552	palkovsky	1413	break;
		1414	case FB_DROP_PIXMAP:
		1415	i = IPC_GET_ARG1(*call);
		1416	if (i >= MAX_PIXMAPS) {
		1417	retval = EINVAL;
		1418	break;
		1419	}
		1420	if (pixmaps[i].data) {
		1421	free(pixmaps[i].data);
		1422	pixmaps[i].data = NULL;
		1423	}
		1424	break;
		1425	default:
		1426	handled = 0;
		1427	}
3707	decky	1428
1552	palkovsky	1429	if (handled)
2619	jermar	1430	ipc_answer_0(callid, retval);
1552	palkovsky	1431	return handled;
		1432
		1433	}
		1434
3767	svoboda	1435	static int rgb_from_style(attr_rgb_t *rgb, int style)
		1436	{
		1437	switch (style) {
		1438	case STYLE_NORMAL:
		1439	rgb->fg_color = color_table[COLOR_BLACK];
		1440	rgb->bg_color = color_table[COLOR_WHITE];
		1441	break;
		1442	case STYLE_EMPHASIS:
		1443	rgb->fg_color = color_table[COLOR_RED];
		1444	rgb->bg_color = color_table[COLOR_WHITE];
		1445	break;
		1446	default:
		1447	return EINVAL;
		1448	}
		1449
		1450	return EOK;
		1451	}
		1452
		1453	static int rgb_from_idx(attr_rgb_t *rgb, ipcarg_t fg_color,
		1454	ipcarg_t bg_color, ipcarg_t flags)
		1455	{
		1456	fg_color = (fg_color & 7) \| ((flags & CATTR_BRIGHT) ? 8 : 0);
		1457	bg_color = (bg_color & 7) \| ((flags & CATTR_BRIGHT) ? 8 : 0);
		1458
		1459	rgb->fg_color = color_table[fg_color];
		1460	rgb->bg_color = color_table[bg_color];
		1461
		1462	return EOK;
		1463	}
		1464
3792	svoboda	1465	static int rgb_from_attr(attr_rgb_t rgb, const attrs_t a)
		1466	{
		1467	int rc;
		1468
		1469	switch (a->t) {
		1470	case at_style:
		1471	rc = rgb_from_style(rgb, a->a.s.style);
		1472	break;
		1473	case at_idx:
		1474	rc = rgb_from_idx(rgb, a->a.i.fg_color,
		1475	a->a.i.bg_color, a->a.i.flags);
		1476	break;
		1477	case at_rgb:
		1478	*rgb = a->a.r;
		1479	rc = EOK;
		1480	break;
		1481	}
		1482
		1483	return rc;
		1484	}
		1485
3767	svoboda	1486	static int fb_set_style(viewport_t *vport, ipcarg_t style)
		1487	{
		1488	return rgb_from_style(&vport->attr, (int) style);
		1489	}
		1490
		1491	static int fb_set_color(viewport_t *vport, ipcarg_t fg_color,
		1492	ipcarg_t bg_color, ipcarg_t flags)
		1493	{
		1494	return rgb_from_idx(&vport->attr, fg_color, bg_color, flags);
		1495	}
		1496
1498	palkovsky	1497	/** Function for handling connections to FB
		1498	*
		1499	*/
3707	decky	1500	static void fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
1363	vana	1501	{
3707	decky	1502	unsigned int vp = 0;
		1503	viewport_t *vport = &viewports[vp];
		1504
1485	palkovsky	1505	if (client_connected) {
2619	jermar	1506	ipc_answer_0(iid, ELIMIT);
1485	palkovsky	1507	return;
		1508	}
3707	decky	1509
		1510	/* Accept connection */
		1511	client_connected = true;
		1512	ipc_answer_0(iid, EOK);
		1513
		1514	while (true) {
		1515	ipc_callid_t callid;
		1516	ipc_call_t call;
		1517	int retval;
		1518	unsigned int i;
		1519	int scroll;
4211	svoboda	1520	uint32_t glyph;
3707	decky	1521	unsigned int row, col;
		1522
		1523	if ((vport->cursor_active) \|\| (anims_enabled))
2070	jermar	1524	callid = async_get_call_timeout(&call, 250000);
1640	palkovsky	1525	else
		1526	callid = async_get_call(&call);
3707	decky	1527
1713	palkovsky	1528	mouse_hide();
1500	palkovsky	1529	if (!callid) {
1673	palkovsky	1530	cursor_blink(vport);
1646	palkovsky	1531	anims_tick();
1723	palkovsky	1532	mouse_show();
1500	palkovsky	1533	continue;
		1534	}
3707	decky	1535
1547	palkovsky	1536	if (shm_handle(callid, &call, vp))
		1537	continue;
3707	decky	1538
1552	palkovsky	1539	if (pixmap_handle(callid, &call, vp))
		1540	continue;
3707	decky	1541
1646	palkovsky	1542	if (anim_handle(callid, &call, vp))
		1543	continue;
3707	decky	1544
		1545	switch (IPC_GET_METHOD(call)) {
1485	palkovsky	1546	case IPC_M_PHONE_HUNGUP:
3707	decky	1547	client_connected = false;
		1548
		1549	/* Cleanup other viewports */
2025	jermar	1550	for (i = 1; i < MAX_VIEWPORTS; i++)
3707	decky	1551	vport->initialized = false;
		1552
		1553	/* Exit thread */
		1554	return;
		1555
1485	palkovsky	1556	case FB_PUTCHAR:
3707	decky	1557	glyph = IPC_GET_ARG1(call);
1485	palkovsky	1558	row = IPC_GET_ARG2(call);
		1559	col = IPC_GET_ARG3(call);
3707	decky	1560
		1561	if ((col >= vport->cols) \|\| (row >= vport->rows)) {
1485	palkovsky	1562	retval = EINVAL;
		1563	break;
		1564	}
2619	jermar	1565	ipc_answer_0(callid, EOK);
3707	decky	1566
		1567	draw_char(vport, glyph, col, row);
		1568
		1569	/* Message already answered */
		1570	continue;
1485	palkovsky	1571	case FB_CLEAR:
3707	decky	1572	vport_clear(vport);
		1573	cursor_show(vport);
		1574	retval = EOK;
1485	palkovsky	1575	break;
3707	decky	1576	case FB_CURSOR_GOTO:
1486	palkovsky	1577	row = IPC_GET_ARG1(call);
		1578	col = IPC_GET_ARG2(call);
3707	decky	1579
		1580	if ((col >= vport->cols) \|\| (row >= vport->rows)) {
1486	palkovsky	1581	retval = EINVAL;
		1582	break;
		1583	}
3707	decky	1584	retval = EOK;
		1585
1673	palkovsky	1586	cursor_hide(vport);
1486	palkovsky	1587	vport->cur_col = col;
		1588	vport->cur_row = row;
3707	decky	1589	cursor_show(vport);
		1590	break;
1486	palkovsky	1591	case FB_CURSOR_VISIBILITY:
1673	palkovsky	1592	cursor_hide(vport);
1500	palkovsky	1593	vport->cursor_active = IPC_GET_ARG1(call);
3707	decky	1594	cursor_show(vport);
		1595	retval = EOK;
1486	palkovsky	1596	break;
1485	palkovsky	1597	case FB_GET_CSIZE:
2619	jermar	1598	ipc_answer_2(callid, EOK, vport->rows, vport->cols);
1485	palkovsky	1599	continue;
1486	palkovsky	1600	case FB_SCROLL:
3707	decky	1601	scroll = IPC_GET_ARG1(call);
		1602	if ((scroll > (int) vport->rows) \|\| (scroll < (-(int) vport->rows))) {
1486	palkovsky	1603	retval = EINVAL;
		1604	break;
		1605	}
1673	palkovsky	1606	cursor_hide(vport);
3707	decky	1607	vport_scroll(vport, scroll);
		1608	cursor_show(vport);
		1609	retval = EOK;
1486	palkovsky	1610	break;
		1611	case FB_VIEWPORT_SWITCH:
		1612	i = IPC_GET_ARG1(call);
3707	decky	1613	if (i >= MAX_VIEWPORTS) {
1486	palkovsky	1614	retval = EINVAL;
		1615	break;
		1616	}
3707	decky	1617	if (!viewports[i].initialized) {
1486	palkovsky	1618	retval = EADDRNOTAVAIL;
		1619	break;
		1620	}
1673	palkovsky	1621	cursor_hide(vport);
1486	palkovsky	1622	vp = i;
		1623	vport = &viewports[vp];
3707	decky	1624	cursor_show(vport);
		1625	retval = EOK;
1486	palkovsky	1626	break;
		1627	case FB_VIEWPORT_CREATE:
3707	decky	1628	retval = vport_create(IPC_GET_ARG1(call) >> 16,
2619	jermar	1629	IPC_GET_ARG1(call) & 0xffff,
		1630	IPC_GET_ARG2(call) >> 16,
		1631	IPC_GET_ARG2(call) & 0xffff);
1486	palkovsky	1632	break;
		1633	case FB_VIEWPORT_DELETE:
		1634	i = IPC_GET_ARG1(call);
3707	decky	1635	if (i >= MAX_VIEWPORTS) {
1486	palkovsky	1636	retval = EINVAL;
		1637	break;
		1638	}
3707	decky	1639	if (!viewports[i].initialized) {
1486	palkovsky	1640	retval = EADDRNOTAVAIL;
		1641	break;
		1642	}
3707	decky	1643	viewports[i].initialized = false;
		1644	if (viewports[i].glyphs)
		1645	free(viewports[i].glyphs);
		1646	if (viewports[i].bgpixel)
		1647	free(viewports[i].bgpixel);
		1648	if (viewports[i].backbuf)
		1649	free(viewports[i].backbuf);
		1650	retval = EOK;
1486	palkovsky	1651	break;
		1652	case FB_SET_STYLE:
3767	svoboda	1653	retval = fb_set_style(vport, IPC_GET_ARG1(call));
		1654	break;
		1655	case FB_SET_COLOR:
		1656	retval = fb_set_color(vport, IPC_GET_ARG1(call),
		1657	IPC_GET_ARG2(call), IPC_GET_ARG3(call));
		1658	break;
		1659	case FB_SET_RGB_COLOR:
		1660	vport->attr.fg_color = IPC_GET_ARG1(call);
		1661	vport->attr.bg_color = IPC_GET_ARG2(call);
3707	decky	1662	retval = EOK;
1486	palkovsky	1663	break;
		1664	case FB_GET_RESOLUTION:
2619	jermar	1665	ipc_answer_2(callid, EOK, screen.xres, screen.yres);
1486	palkovsky	1666	continue;
1707	palkovsky	1667	case FB_POINTER_MOVE:
3707	decky	1668	pointer_enabled = true;
1711	palkovsky	1669	mouse_move(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
3707	decky	1670	retval = EOK;
1707	palkovsky	1671	break;
1485	palkovsky	1672	default:
		1673	retval = ENOENT;
		1674	}
2619	jermar	1675	ipc_answer_0(callid, retval);
1363	vana	1676	}
1485	palkovsky	1677	}
1363	vana	1678
3707	decky	1679	/** Initialization of framebuffer
		1680	*
		1681	*/
		1682	int fb_init(void)
1485	palkovsky	1683	{
1490	palkovsky	1684	async_set_client_connection(fb_client_connection);
1485	palkovsky	1685
3707	decky	1686	void fb_ph_addr = (void ) sysinfo_value("fb.address.physical");
		1687	unsigned int fb_offset = sysinfo_value("fb.offset");
		1688	unsigned int fb_width = sysinfo_value("fb.width");
		1689	unsigned int fb_height = sysinfo_value("fb.height");
		1690	unsigned int fb_scanline = sysinfo_value("fb.scanline");
		1691	unsigned int fb_visual = sysinfo_value("fb.visual");
		1692
		1693	unsigned int fbsize = fb_scanline * fb_height;
		1694	void *fb_addr = as_get_mappable_page(fbsize);
		1695
3908	decky	1696	if (physmem_map(fb_ph_addr + fb_offset, fb_addr,
		1697	ALIGN_UP(fbsize, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ \| AS_AREA_WRITE) != 0)
		1698	return -1;
3707	decky	1699
		1700	if (screen_init(fb_addr, fb_width, fb_height, fb_scanline, fb_visual))
1993	decky	1701	return 0;
		1702
		1703	return -1;
1363	vana	1704	}
1490	palkovsky	1705
3707	decky	1706	/**
1649	cejka	1707	* @}
		1708	*/

Subversion Repositories HelenOS

(root)/trunk/uspace/srv/fb/fb.c/ – Rev 4211