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 {
3767	svoboda	100	uint8_t glyph;
		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,
		197	uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color);
		198	static void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
		199	uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color);
		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,
		662	uint8_t *glyphs, uint8_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
		670	/*
		671	* Prepare a pair of words, one filled with foreground-color
		672	* pattern and the other filled with background-color pattern.
		673	*/
		674	for (i = 0; i < sizeof(unsigned long) / screen.pixelbytes; i++) {
		675	screen.rgb_conv(&((uint8_t )&fg_buf)[i screen.pixelbytes],
		676	fg_color);
		677	screen.rgb_conv(&((uint8_t )&bg_buf)[i screen.pixelbytes],
		678	bg_color);
		679	}
		680
		681
		682	/* Pointer to the current position in the mask. */
		683	maskp = (unsigned long *) &glyphs[GLYPH_POS(glyph, 0, cursor)];
		684
		685	/* Pointer to the current position on the screen. */
		686	dp = (unsigned long *) &screen.fb_addr[FB_POS(x, y)];
		687
		688	/* Width of the character cell in words. */
		689	ww = FONT_WIDTH * screen.pixelbytes / sizeof(unsigned long);
		690
		691	/* Offset to add when moving to another screen scanline. */
		692	d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
		693
		694	for (yd = 0; yd < FONT_SCANLINES; yd++) {
		695	/*
		696	* Now process the cell scanline, combining foreground
		697	* and background color patters using the pre-rendered mask.
		698	*/
		699	for (i = 0; i < ww; i++) {
		700	mask = *maskp++;
		701	*dp++ = (fg_buf & mask) \| (bg_buf & ~mask);
		702	}
		703
		704	/* Move to the beginning of the next scanline of the cell. */
		705	dp = (unsigned long ) ((uint8_t ) dp + d_add);
		706	}
3739	svoboda	707	}
		708
3744	svoboda	709	/** Draw a glyph, fallback version.
		710	*
		711	* This version does not make use of the pre-rendered mask, it uses
		712	* the font bitmap directly. It works always, but it is slower.
		713	*
		714	* @param x x coordinate of top-left corner on screen.
		715	* @param y y coordinate of top-left corner on screen.
		716	* @param cursor Draw glyph with cursor
		717	* @param glyphs Pointer to font bitmap.
		718	* @param glyph Code of the glyph to draw.
		719	* @param fg_color Foreground color.
		720	* @param bg_color Backgroudn color.
		721	*/
		722	void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
		723	uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color)
		724	{
		725	unsigned int i, j, yd;
		726	uint8_t fg_buf[4], bg_buf[4];
		727	uint8_t dp, sp;
		728	unsigned int d_add;
		729	uint8_t b;
		730
		731	/* Pre-render 1x the foreground and background color pixels. */
		732	if (cursor) {
		733	screen.rgb_conv(fg_buf, bg_color);
		734	screen.rgb_conv(bg_buf, fg_color);
		735	} else {
		736	screen.rgb_conv(fg_buf, fg_color);
		737	screen.rgb_conv(bg_buf, bg_color);
		738	}
		739
		740	/* Pointer to the current position on the screen. */
		741	dp = (uint8_t *) &screen.fb_addr[FB_POS(x, y)];
		742
		743	/* Offset to add when moving to another screen scanline. */
		744	d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
		745
		746	for (yd = 0; yd < FONT_SCANLINES; yd++) {
		747	/* Byte containing bits of the glyph scanline. */
		748	b = fb_font[glyph * FONT_SCANLINES + yd];
		749
		750	for (i = 0; i < FONT_WIDTH; i++) {
		751	/* Choose color based on the current bit. */
		752	sp = (b & 0x80) ? fg_buf : bg_buf;
		753
		754	/* Copy the pixel. */
		755	for (j = 0; j < screen.pixelbytes; j++) {
		756	dp++ = sp++;
		757	}
		758
		759	/* Move to the next bit. */
		760	b = b << 1;
		761	}
		762
		763	/* Move to the beginning of the next scanline of the cell. */
		764	dp += d_add;
		765	}
		766	}
		767
3739	svoboda	768	/** Draw glyph at specified position in viewport.
		769	*
3707	decky	770	* @param vport Viewport identification
		771	* @param cursor Draw glyph with cursor
		772	* @param col Screen position relative to viewport
		773	* @param row Screen position relative to viewport
		774	*
		775	*/
3739	svoboda	776	static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
		777	unsigned int row)
1500	palkovsky	778	{
3707	decky	779	unsigned int x = vport->x + COL2X(col);
		780	unsigned int y = vport->y + ROW2Y(row);
3767	svoboda	781
3739	svoboda	782	uint8_t glyph;
3767	svoboda	783	uint32_t fg_color;
		784	uint32_t bg_color;
3707	decky	785
3767	svoboda	786	glyph = vport->backbuf[BB_POS(vport, col, row)].glyph;
		787	fg_color = vport->backbuf[BB_POS(vport, col, row)].fg_color;
		788	bg_color = vport->backbuf[BB_POS(vport, col, row)].bg_color;
3744	svoboda	789
		790	(*vport->dglyph)(x, y, cursor, vport->glyphs, glyph,
3767	svoboda	791	fg_color, bg_color);
3707	decky	792	}
		793
		794	/** Hide cursor if it is shown
		795	*
		796	*/
		797	static void cursor_hide(viewport_t *vport)
		798	{
		799	if ((vport->cursor_active) && (vport->cursor_shown)) {
3739	svoboda	800	draw_vp_glyph(vport, false, vport->cur_col, vport->cur_row);
3707	decky	801	vport->cursor_shown = false;
1500	palkovsky	802	}
		803	}
		804
3707	decky	805
		806	/** Show cursor if cursor showing is enabled
		807	*
		808	*/
		809	static void cursor_show(viewport_t *vport)
1500	palkovsky	810	{
		811	/* Do not check for cursor_shown */
		812	if (vport->cursor_active) {
3739	svoboda	813	draw_vp_glyph(vport, true, vport->cur_col, vport->cur_row);
3707	decky	814	vport->cursor_shown = true;
1500	palkovsky	815	}
		816	}
		817
3707	decky	818
		819	/** Invert cursor, if it is enabled
		820	*
		821	*/
		822	static void cursor_blink(viewport_t *vport)
1500	palkovsky	823	{
		824	if (vport->cursor_shown)
1673	palkovsky	825	cursor_hide(vport);
1500	palkovsky	826	else
3707	decky	827	cursor_show(vport);
1500	palkovsky	828	}
		829
3707	decky	830
		831	/** Draw character at given position relative to viewport
		832	*
		833	* @param vport Viewport identification
		834	* @param c Character to draw
		835	* @param col Screen position relative to viewport
		836	* @param row Screen position relative to viewport
		837	*
1498	palkovsky	838	*/
3707	decky	839	static void draw_char(viewport_t *vport, uint8_t c, unsigned int col, unsigned int row)
1486	palkovsky	840	{
3767	svoboda	841	bb_cell_t *bbp;
		842
3707	decky	843	/* Do not hide cursor if we are going to overwrite it */
		844	if ((vport->cursor_active) && (vport->cursor_shown) &&
		845	((vport->cur_col != col) \|\| (vport->cur_row != row)))
		846	cursor_hide(vport);
3767	svoboda	847
		848	bbp = &vport->backbuf[BB_POS(vport, col, row)];
		849	bbp->glyph = c;
		850	bbp->fg_color = vport->attr.fg_color;
		851	bbp->bg_color = vport->attr.bg_color;
		852
3739	svoboda	853	draw_vp_glyph(vport, false, col, row);
3707	decky	854
1489	palkovsky	855	vport->cur_col = col;
		856	vport->cur_row = row;
3707	decky	857
1489	palkovsky	858	vport->cur_col++;
2025	jermar	859	if (vport->cur_col >= vport->cols) {
1489	palkovsky	860	vport->cur_col = 0;
		861	vport->cur_row++;
		862	if (vport->cur_row >= vport->rows)
		863	vport->cur_row--;
1486	palkovsky	864	}
3707	decky	865
		866	cursor_show(vport);
1486	palkovsky	867	}
		868
3707	decky	869
1552	palkovsky	870	/** Draw text data to viewport
		871	*
1709	jermar	872	* @param vport Viewport id
3707	decky	873	* @param data Text data fitting exactly into viewport
		874	*
1552	palkovsky	875	*/
3707	decky	876	static void draw_text_data(viewport_t vport, keyfield_t data)
1505	palkovsky	877	{
3707	decky	878	unsigned int i;
3767	svoboda	879	bb_cell_t *bbp;
		880	attrs_t *a;
		881	attr_rgb_t rgb;
3707	decky	882
2025	jermar	883	for (i = 0; i < vport->cols * vport->rows; i++) {
3707	decky	884	unsigned int col = i % vport->cols;
		885	unsigned int row = i / vport->cols;
		886
3767	svoboda	887	bbp = &vport->backbuf[BB_POS(vport, col, row)];
		888	uint8_t glyph = bbp->glyph;
		889
3792	svoboda	890	a = &data[i].attrs;
		891	rgb_from_attr(&rgb, a);
3767	svoboda	892
3795	svoboda	893	bbp->glyph = data[i].character;
		894	bbp->fg_color = rgb.fg_color;
		895	bbp->bg_color = rgb.bg_color;
3767	svoboda	896
3795	svoboda	897	draw_vp_glyph(vport, false, col, row);
1505	palkovsky	898	}
3707	decky	899	cursor_show(vport);
1505	palkovsky	900	}
		901
3707	decky	902
		903	static void putpixel_pixmap(void *data, unsigned int x, unsigned int y, uint32_t color)
1555	palkovsky	904	{
3707	decky	905	int pm = ((int ) data);
		906	pixmap_t *pmap = &pixmaps[pm];
		907	unsigned int pos = (y * pmap->width + x) * screen.pixelbytes;
1555	palkovsky	908
3707	decky	909	screen.rgb_conv(&pmap->data[pos], color);
		910	}
		911
		912
		913	static void putpixel(void *data, unsigned int x, unsigned int y, uint32_t color)
		914	{
		915	viewport_t vport = (viewport_t ) data;
		916	unsigned int dx = vport->x + x;
		917	unsigned int dy = vport->y + y;
		918
		919	screen.rgb_conv(&screen.fb_addr[FB_POS(dx, dy)], color);
		920	}
		921
		922
		923	/** Return first free pixmap
		924	*
		925	*/
		926	static int find_free_pixmap(void)
		927	{
		928	unsigned int i;
		929
		930	for (i = 0; i < MAX_PIXMAPS; i++)
1555	palkovsky	931	if (!pixmaps[i].data)
		932	return i;
3707	decky	933
1555	palkovsky	934	return -1;
		935	}
		936
		937
3707	decky	938	/** Create a new pixmap and return appropriate ID
		939	*
		940	*/
		941	static int shm2pixmap(unsigned char *shm, size_t size)
1555	palkovsky	942	{
		943	int pm;
		944	pixmap_t *pmap;
3707	decky	945
1555	palkovsky	946	pm = find_free_pixmap();
		947	if (pm == -1)
		948	return ELIMIT;
3707	decky	949
1555	palkovsky	950	pmap = &pixmaps[pm];
		951
		952	if (ppm_get_data(shm, size, &pmap->width, &pmap->height))
		953	return EINVAL;
		954
		955	pmap->data = malloc(pmap->width * pmap->height * screen.pixelbytes);
		956	if (!pmap->data)
		957	return ENOMEM;
3707	decky	958
		959	ppm_draw(shm, size, 0, 0, pmap->width, pmap->height, putpixel_pixmap, (void *) &pm);
		960
1555	palkovsky	961	return pm;
		962	}
		963
3707	decky	964
1552	palkovsky	965	/** Handle shared memory communication calls
		966	*
		967	* Protocol for drawing pixmaps:
		968	* - FB_PREPARE_SHM(client shm identification)
2025	jermar	969	* - IPC_M_AS_AREA_SEND
3707	decky	970	* - FB_DRAW_PPM(startx, starty)
1552	palkovsky	971	* - FB_DROP_SHM
		972	*
		973	* Protocol for text drawing
2025	jermar	974	* - IPC_M_AS_AREA_SEND
1552	palkovsky	975	* - FB_DRAW_TEXT_DATA
		976	*
		977	* @param callid Callid of the current call
3707	decky	978	* @param call Current call data
		979	* @param vp Active viewport
1552	palkovsky	980	*
3707	decky	981	* @return false if the call was not handled byt this function, true otherwise
		982	*
		983	* Note: this function is not threads safe, you would have
1552	palkovsky	984	* to redefine static variables with __thread
3707	decky	985	*
1552	palkovsky	986	*/
3707	decky	987	static bool shm_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
1547	palkovsky	988	{
		989	static keyfield_t *interbuffer = NULL;
		990	static size_t intersize = 0;
3707	decky	991
1720	palkovsky	992	static unsigned char *shm = NULL;
1555	palkovsky	993	static ipcarg_t shm_id = 0;
		994	static size_t shm_size;
3707	decky	995
		996	bool handled = true;
		997	int retval = EOK;
1547	palkovsky	998	viewport_t *vport = &viewports[vp];
3707	decky	999	unsigned int x;
		1000	unsigned int y;
		1001
1547	palkovsky	1002	switch (IPC_GET_METHOD(*call)) {
2677	jermar	1003	case IPC_M_SHARE_OUT:
1547	palkovsky	1004	/* We accept one area for data interchange */
1555	palkovsky	1005	if (IPC_GET_ARG1(*call) == shm_id) {
2141	jermar	1006	void dest = as_get_mappable_page(IPC_GET_ARG2(call));
1555	palkovsky	1007	shm_size = IPC_GET_ARG2(*call);
3707	decky	1008	if (!ipc_answer_1(callid, EOK, (sysarg_t) dest))
1555	palkovsky	1009	shm = dest;
1547	palkovsky	1010	else
1555	palkovsky	1011	shm_id = 0;
3707	decky	1012
1555	palkovsky	1013	if (shm[0] != 'P')
3707	decky	1014	return false;
		1015
		1016	return true;
1547	palkovsky	1017	} else {
		1018	intersize = IPC_GET_ARG2(*call);
2015	jermar	1019	receive_comm_area(callid, call, (void *) &interbuffer);
1547	palkovsky	1020	}
3707	decky	1021	return true;
1547	palkovsky	1022	case FB_PREPARE_SHM:
1555	palkovsky	1023	if (shm_id)
1547	palkovsky	1024	retval = EBUSY;
		1025	else
1555	palkovsky	1026	shm_id = IPC_GET_ARG1(*call);
1547	palkovsky	1027	break;
		1028
		1029	case FB_DROP_SHM:
1555	palkovsky	1030	if (shm) {
		1031	as_area_destroy(shm);
		1032	shm = NULL;
1547	palkovsky	1033	}
1555	palkovsky	1034	shm_id = 0;
1547	palkovsky	1035	break;
3707	decky	1036
1555	palkovsky	1037	case FB_SHM2PIXMAP:
		1038	if (!shm) {
		1039	retval = EINVAL;
		1040	break;
		1041	}
		1042	retval = shm2pixmap(shm, shm_size);
		1043	break;
1547	palkovsky	1044	case FB_DRAW_PPM:
1555	palkovsky	1045	if (!shm) {
1547	palkovsky	1046	retval = EINVAL;
		1047	break;
		1048	}
		1049	x = IPC_GET_ARG1(*call);
		1050	y = IPC_GET_ARG2(*call);
3707	decky	1051
		1052	if ((x > vport->width) \|\| (y > vport->height)) {
1547	palkovsky	1053	retval = EINVAL;
		1054	break;
		1055	}
		1056
2025	jermar	1057	ppm_draw(shm, shm_size, IPC_GET_ARG1(*call),
3707	decky	1058	IPC_GET_ARG2(call), vport->width - x, vport->height - y, putpixel, (void ) vport);
1547	palkovsky	1059	break;
		1060	case FB_DRAW_TEXT_DATA:
		1061	if (!interbuffer) {
		1062	retval = EINVAL;
		1063	break;
		1064	}
3707	decky	1065	if (intersize < vport->cols * vport->rows * sizeof(*interbuffer)) {
1547	palkovsky	1066	retval = EINVAL;
		1067	break;
		1068	}
1673	palkovsky	1069	draw_text_data(vport, interbuffer);
1547	palkovsky	1070	break;
		1071	default:
3707	decky	1072	handled = false;
1547	palkovsky	1073	}
		1074
		1075	if (handled)
2619	jermar	1076	ipc_answer_0(callid, retval);
1547	palkovsky	1077	return handled;
		1078	}
		1079
3707	decky	1080
		1081	static void copy_vp_to_pixmap(viewport_t vport, pixmap_t pmap)
1552	palkovsky	1082	{
3707	decky	1083	unsigned int width = vport->width;
		1084	unsigned int height = vport->height;
		1085
1711	palkovsky	1086	if (width + vport->x > screen.xres)
		1087	width = screen.xres - vport->x;
2301	decky	1088	if (height + vport->y > screen.yres)
1711	palkovsky	1089	height = screen.yres - vport->y;
2301	decky	1090
3707	decky	1091	unsigned int realwidth = pmap->width <= width ? pmap->width : width;
		1092	unsigned int realheight = pmap->height <= height ? pmap->height : height;
2301	decky	1093
3707	decky	1094	unsigned int srcrowsize = vport->width * screen.pixelbytes;
		1095	unsigned int realrowsize = realwidth * screen.pixelbytes;
		1096
		1097	unsigned int y;
2301	decky	1098	for (y = 0; y < realheight; y++) {
3707	decky	1099	unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
		1100	memcpy(pmap->data + srcrowsize * y, screen.fb_addr + tmp, realrowsize);
1711	palkovsky	1101	}
		1102	}
		1103
3707	decky	1104
		1105	/** Save viewport to pixmap
		1106	*
		1107	*/
		1108	static int save_vp_to_pixmap(viewport_t *vport)
1711	palkovsky	1109	{
		1110	int pm;
		1111	pixmap_t *pmap;
3707	decky	1112
1552	palkovsky	1113	pm = find_free_pixmap();
		1114	if (pm == -1)
		1115	return ELIMIT;
		1116
		1117	pmap = &pixmaps[pm];
		1118	pmap->data = malloc(screen.pixelbytes * vport->width * vport->height);
		1119	if (!pmap->data)
		1120	return ENOMEM;
3707	decky	1121
1552	palkovsky	1122	pmap->width = vport->width;
		1123	pmap->height = vport->height;
3707	decky	1124
1711	palkovsky	1125	copy_vp_to_pixmap(vport, pmap);
1552	palkovsky	1126
		1127	return pm;
		1128	}
		1129
3707	decky	1130
1552	palkovsky	1131	/** Draw pixmap on screen
		1132	*
		1133	* @param vp Viewport to draw on
		1134	* @param pm Pixmap identifier
3707	decky	1135	*
1552	palkovsky	1136	*/
		1137	static int draw_pixmap(int vp, int pm)
		1138	{
		1139	pixmap_t *pmap = &pixmaps[pm];
		1140	viewport_t *vport = &viewports[vp];
3707	decky	1141
		1142	unsigned int width = vport->width;
		1143	unsigned int height = vport->height;
		1144
1711	palkovsky	1145	if (width + vport->x > screen.xres)
		1146	width = screen.xres - vport->x;
		1147	if (height + vport->y > screen.yres)
		1148	height = screen.yres - vport->y;
3707	decky	1149
1552	palkovsky	1150	if (!pmap->data)
		1151	return EINVAL;
3707	decky	1152
		1153	unsigned int realwidth = pmap->width <= width ? pmap->width : width;
		1154	unsigned int realheight = pmap->height <= height ? pmap->height : height;
		1155
		1156	unsigned int srcrowsize = vport->width * screen.pixelbytes;
		1157	unsigned int realrowsize = realwidth * screen.pixelbytes;
		1158
		1159	unsigned int y;
2070	jermar	1160	for (y = 0; y < realheight; y++) {
3707	decky	1161	unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
		1162	memcpy(screen.fb_addr + tmp, pmap->data + y * srcrowsize, realrowsize);
1552	palkovsky	1163	}
3707	decky	1164
		1165	return EOK;
1552	palkovsky	1166	}
		1167
3707	decky	1168
		1169	/** Tick animation one step forward
		1170	*
		1171	*/
		1172	static void anims_tick(void)
1646	palkovsky	1173	{
3707	decky	1174	unsigned int i;
1646	palkovsky	1175	static int counts = 0;
		1176
		1177	/* Limit redrawing */
2025	jermar	1178	counts = (counts + 1) % 8;
1646	palkovsky	1179	if (counts)
		1180	return;
		1181
2070	jermar	1182	for (i = 0; i < MAX_ANIMATIONS; i++) {
3707	decky	1183	if ((!animations[i].animlen) \|\| (!animations[i].initialized) \|\|
		1184	(!animations[i].enabled))
1646	palkovsky	1185	continue;
3707	decky	1186
		1187	draw_pixmap(animations[i].vp, animations[i].pixmaps[animations[i].pos]);
		1188	animations[i].pos = (animations[i].pos + 1) % animations[i].animlen;
1646	palkovsky	1189	}
		1190	}
		1191
1711	palkovsky	1192
3707	decky	1193	static unsigned int pointer_x;
		1194	static unsigned int pointer_y;
		1195	static bool pointer_shown, pointer_enabled;
1711	palkovsky	1196	static int pointer_vport = -1;
		1197	static int pointer_pixmap = -1;
		1198
3707	decky	1199
		1200	static void mouse_show(void)
1711	palkovsky	1201	{
2070	jermar	1202	int i, j;
1711	palkovsky	1203	int visibility;
		1204	int color;
		1205	int bytepos;
3707	decky	1206
		1207	if ((pointer_shown) \|\| (!pointer_enabled))
1723	palkovsky	1208	return;
3707	decky	1209
3723	svoboda	1210	/* Save image under the pointer. */
1711	palkovsky	1211	if (pointer_vport == -1) {
3707	decky	1212	pointer_vport = vport_create(pointer_x, pointer_y, pointer_width, pointer_height);
1711	palkovsky	1213	if (pointer_vport < 0)
		1214	return;
		1215	} else {
		1216	viewports[pointer_vport].x = pointer_x;
		1217	viewports[pointer_vport].y = pointer_y;
		1218	}
3707	decky	1219
1711	palkovsky	1220	if (pointer_pixmap == -1)
		1221	pointer_pixmap = save_vp_to_pixmap(&viewports[pointer_vport]);
		1222	else
3707	decky	1223	copy_vp_to_pixmap(&viewports[pointer_vport], &pixmaps[pointer_pixmap]);
		1224
3723	svoboda	1225	/* Draw mouse pointer. */
2025	jermar	1226	for (i = 0; i < pointer_height; i++)
		1227	for (j = 0; j < pointer_width; j++) {
		1228	bytepos = i * ((pointer_width - 1) / 8 + 1) + j / 8;
2070	jermar	1229	visibility = pointer_mask_bits[bytepos] &
2619	jermar	1230	(1 << (j % 8));
1711	palkovsky	1231	if (visibility) {
2619	jermar	1232	color = pointer_bits[bytepos] &
		1233	(1 << (j % 8)) ? 0 : 0xffffff;
2025	jermar	1234	if (pointer_x + j < screen.xres && pointer_y +
2619	jermar	1235	i < screen.yres)
2025	jermar	1236	putpixel(&viewports[0], pointer_x + j,
2619	jermar	1237	pointer_y + i, color);
1711	palkovsky	1238	}
		1239	}
		1240	pointer_shown = 1;
		1241	}
		1242
3707	decky	1243
		1244	static void mouse_hide(void)
1711	palkovsky	1245	{
3723	svoboda	1246	/* Restore image under the pointer. */
1711	palkovsky	1247	if (pointer_shown) {
		1248	draw_pixmap(pointer_vport, pointer_pixmap);
		1249	pointer_shown = 0;
		1250	}
		1251	}
		1252
3707	decky	1253
		1254	static void mouse_move(unsigned int x, unsigned int y)
1711	palkovsky	1255	{
		1256	mouse_hide();
		1257	pointer_x = x;
		1258	pointer_y = y;
		1259	mouse_show();
		1260	}
		1261
3707	decky	1262
		1263	static int anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
1646	palkovsky	1264	{
3707	decky	1265	bool handled = true;
		1266	int retval = EOK;
		1267	int i, nvp;
1646	palkovsky	1268	int newval;
3707	decky	1269
1646	palkovsky	1270	switch (IPC_GET_METHOD(*call)) {
		1271	case FB_ANIM_CREATE:
		1272	nvp = IPC_GET_ARG1(*call);
		1273	if (nvp == -1)
		1274	nvp = vp;
2025	jermar	1275	if (nvp >= MAX_VIEWPORTS \|\| nvp < 0 \|\|
		1276	!viewports[nvp].initialized) {
1646	palkovsky	1277	retval = EINVAL;
		1278	break;
		1279	}
2025	jermar	1280	for (i = 0; i < MAX_ANIMATIONS; i++) {
		1281	if (!animations[i].initialized)
1646	palkovsky	1282	break;
		1283	}
		1284	if (i == MAX_ANIMATIONS) {
		1285	retval = ELIMIT;
		1286	break;
		1287	}
		1288	animations[i].initialized = 1;
		1289	animations[i].animlen = 0;
		1290	animations[i].pos = 0;
		1291	animations[i].enabled = 0;
		1292	animations[i].vp = nvp;
		1293	retval = i;
		1294	break;
		1295	case FB_ANIM_DROP:
		1296	i = IPC_GET_ARG1(*call);
1720	palkovsky	1297	if (i >= MAX_ANIMATIONS \|\| i < 0) {
1646	palkovsky	1298	retval = EINVAL;
		1299	break;
		1300	}
		1301	animations[i].initialized = 0;
		1302	break;
		1303	case FB_ANIM_ADDPIXMAP:
		1304	i = IPC_GET_ARG1(*call);
2025	jermar	1305	if (i >= MAX_ANIMATIONS \|\| i < 0 \|\|
		1306	!animations[i].initialized) {
1646	palkovsky	1307	retval = EINVAL;
		1308	break;
		1309	}
		1310	if (animations[i].animlen == MAX_ANIM_LEN) {
		1311	retval = ELIMIT;
		1312	break;
		1313	}
		1314	newval = IPC_GET_ARG2(*call);
2025	jermar	1315	if (newval < 0 \|\| newval > MAX_PIXMAPS \|\|
		1316	!pixmaps[newval].data) {
1646	palkovsky	1317	retval = EINVAL;
		1318	break;
		1319	}
		1320	animations[i].pixmaps[animations[i].animlen++] = newval;
		1321	break;
		1322	case FB_ANIM_CHGVP:
		1323	i = IPC_GET_ARG1(*call);
		1324	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1325	retval = EINVAL;
		1326	break;
		1327	}
		1328	nvp = IPC_GET_ARG2(*call);
		1329	if (nvp == -1)
		1330	nvp = vp;
2025	jermar	1331	if (nvp >= MAX_VIEWPORTS \|\| nvp < 0 \|\|
		1332	!viewports[nvp].initialized) {
1646	palkovsky	1333	retval = EINVAL;
		1334	break;
		1335	}
		1336	animations[i].vp = nvp;
		1337	break;
		1338	case FB_ANIM_START:
		1339	case FB_ANIM_STOP:
		1340	i = IPC_GET_ARG1(*call);
		1341	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1342	retval = EINVAL;
		1343	break;
		1344	}
		1345	newval = (IPC_GET_METHOD(*call) == FB_ANIM_START);
		1346	if (newval ^ animations[i].enabled) {
		1347	animations[i].enabled = newval;
		1348	anims_enabled += newval ? 1 : -1;
		1349	}
		1350	break;
		1351	default:
		1352	handled = 0;
		1353	}
		1354	if (handled)
2619	jermar	1355	ipc_answer_0(callid, retval);
1646	palkovsky	1356	return handled;
		1357	}
		1358
3707	decky	1359
		1360	/** Handler for messages concerning pixmap handling
		1361	*
		1362	*/
		1363	static int pixmap_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
1552	palkovsky	1364	{
3707	decky	1365	bool handled = true;
		1366	int retval = EOK;
		1367	int i, nvp;
		1368
1552	palkovsky	1369	switch (IPC_GET_METHOD(*call)) {
		1370	case FB_VP_DRAW_PIXMAP:
		1371	nvp = IPC_GET_ARG1(*call);
		1372	if (nvp == -1)
		1373	nvp = vp;
2025	jermar	1374	if (nvp < 0 \|\| nvp >= MAX_VIEWPORTS \|\|
		1375	!viewports[nvp].initialized) {
1552	palkovsky	1376	retval = EINVAL;
		1377	break;
		1378	}
		1379	i = IPC_GET_ARG2(*call);
		1380	retval = draw_pixmap(nvp, i);
		1381	break;
		1382	case FB_VP2PIXMAP:
		1383	nvp = IPC_GET_ARG1(*call);
		1384	if (nvp == -1)
		1385	nvp = vp;
2025	jermar	1386	if (nvp < 0 \|\| nvp >= MAX_VIEWPORTS \|\|
		1387	!viewports[nvp].initialized)
1552	palkovsky	1388	retval = EINVAL;
		1389	else
1711	palkovsky	1390	retval = save_vp_to_pixmap(&viewports[nvp]);
1552	palkovsky	1391	break;
		1392	case FB_DROP_PIXMAP:
		1393	i = IPC_GET_ARG1(*call);
		1394	if (i >= MAX_PIXMAPS) {
		1395	retval = EINVAL;
		1396	break;
		1397	}
		1398	if (pixmaps[i].data) {
		1399	free(pixmaps[i].data);
		1400	pixmaps[i].data = NULL;
		1401	}
		1402	break;
		1403	default:
		1404	handled = 0;
		1405	}
3707	decky	1406
1552	palkovsky	1407	if (handled)
2619	jermar	1408	ipc_answer_0(callid, retval);
1552	palkovsky	1409	return handled;
		1410
		1411	}
		1412
3767	svoboda	1413	static int rgb_from_style(attr_rgb_t *rgb, int style)
		1414	{
		1415	switch (style) {
		1416	case STYLE_NORMAL:
		1417	rgb->fg_color = color_table[COLOR_BLACK];
		1418	rgb->bg_color = color_table[COLOR_WHITE];
		1419	break;
		1420	case STYLE_EMPHASIS:
		1421	rgb->fg_color = color_table[COLOR_RED];
		1422	rgb->bg_color = color_table[COLOR_WHITE];
		1423	break;
		1424	default:
		1425	return EINVAL;
		1426	}
		1427
		1428	return EOK;
		1429	}
		1430
		1431	static int rgb_from_idx(attr_rgb_t *rgb, ipcarg_t fg_color,
		1432	ipcarg_t bg_color, ipcarg_t flags)
		1433	{
		1434	fg_color = (fg_color & 7) \| ((flags & CATTR_BRIGHT) ? 8 : 0);
		1435	bg_color = (bg_color & 7) \| ((flags & CATTR_BRIGHT) ? 8 : 0);
		1436
		1437	rgb->fg_color = color_table[fg_color];
		1438	rgb->bg_color = color_table[bg_color];
		1439
		1440	return EOK;
		1441	}
		1442
3792	svoboda	1443	static int rgb_from_attr(attr_rgb_t rgb, const attrs_t a)
		1444	{
		1445	int rc;
		1446
		1447	switch (a->t) {
		1448	case at_style:
		1449	rc = rgb_from_style(rgb, a->a.s.style);
		1450	break;
		1451	case at_idx:
		1452	rc = rgb_from_idx(rgb, a->a.i.fg_color,
		1453	a->a.i.bg_color, a->a.i.flags);
		1454	break;
		1455	case at_rgb:
		1456	*rgb = a->a.r;
		1457	rc = EOK;
		1458	break;
		1459	}
		1460
		1461	return rc;
		1462	}
		1463
3767	svoboda	1464	static int fb_set_style(viewport_t *vport, ipcarg_t style)
		1465	{
		1466	return rgb_from_style(&vport->attr, (int) style);
		1467	}
		1468
		1469	static int fb_set_color(viewport_t *vport, ipcarg_t fg_color,
		1470	ipcarg_t bg_color, ipcarg_t flags)
		1471	{
		1472	return rgb_from_idx(&vport->attr, fg_color, bg_color, flags);
		1473	}
		1474
1498	palkovsky	1475	/** Function for handling connections to FB
		1476	*
		1477	*/
3707	decky	1478	static void fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
1363	vana	1479	{
3707	decky	1480	unsigned int vp = 0;
		1481	viewport_t *vport = &viewports[vp];
		1482
1485	palkovsky	1483	if (client_connected) {
2619	jermar	1484	ipc_answer_0(iid, ELIMIT);
1485	palkovsky	1485	return;
		1486	}
3707	decky	1487
		1488	/* Accept connection */
		1489	client_connected = true;
		1490	ipc_answer_0(iid, EOK);
		1491
		1492	while (true) {
		1493	ipc_callid_t callid;
		1494	ipc_call_t call;
		1495	int retval;
		1496	unsigned int i;
		1497	int scroll;
		1498	uint8_t glyph;
		1499	unsigned int row, col;
		1500
		1501	if ((vport->cursor_active) \|\| (anims_enabled))
2070	jermar	1502	callid = async_get_call_timeout(&call, 250000);
1640	palkovsky	1503	else
		1504	callid = async_get_call(&call);
3707	decky	1505
1713	palkovsky	1506	mouse_hide();
1500	palkovsky	1507	if (!callid) {
1673	palkovsky	1508	cursor_blink(vport);
1646	palkovsky	1509	anims_tick();
1723	palkovsky	1510	mouse_show();
1500	palkovsky	1511	continue;
		1512	}
3707	decky	1513
1547	palkovsky	1514	if (shm_handle(callid, &call, vp))
		1515	continue;
3707	decky	1516
1552	palkovsky	1517	if (pixmap_handle(callid, &call, vp))
		1518	continue;
3707	decky	1519
1646	palkovsky	1520	if (anim_handle(callid, &call, vp))
		1521	continue;
3707	decky	1522
		1523	switch (IPC_GET_METHOD(call)) {
1485	palkovsky	1524	case IPC_M_PHONE_HUNGUP:
3707	decky	1525	client_connected = false;
		1526
		1527	/* Cleanup other viewports */
2025	jermar	1528	for (i = 1; i < MAX_VIEWPORTS; i++)
3707	decky	1529	vport->initialized = false;
		1530
		1531	/* Exit thread */
		1532	return;
		1533
1485	palkovsky	1534	case FB_PUTCHAR:
3707	decky	1535	glyph = IPC_GET_ARG1(call);
1485	palkovsky	1536	row = IPC_GET_ARG2(call);
		1537	col = IPC_GET_ARG3(call);
3707	decky	1538
		1539	if ((col >= vport->cols) \|\| (row >= vport->rows)) {
1485	palkovsky	1540	retval = EINVAL;
		1541	break;
		1542	}
2619	jermar	1543	ipc_answer_0(callid, EOK);
3707	decky	1544
		1545	draw_char(vport, glyph, col, row);
		1546
		1547	/* Message already answered */
		1548	continue;
1485	palkovsky	1549	case FB_CLEAR:
3707	decky	1550	vport_clear(vport);
		1551	cursor_show(vport);
		1552	retval = EOK;
1485	palkovsky	1553	break;
3707	decky	1554	case FB_CURSOR_GOTO:
1486	palkovsky	1555	row = IPC_GET_ARG1(call);
		1556	col = IPC_GET_ARG2(call);
3707	decky	1557
		1558	if ((col >= vport->cols) \|\| (row >= vport->rows)) {
1486	palkovsky	1559	retval = EINVAL;
		1560	break;
		1561	}
3707	decky	1562	retval = EOK;
		1563
1673	palkovsky	1564	cursor_hide(vport);
1486	palkovsky	1565	vport->cur_col = col;
		1566	vport->cur_row = row;
3707	decky	1567	cursor_show(vport);
		1568	break;
1486	palkovsky	1569	case FB_CURSOR_VISIBILITY:
1673	palkovsky	1570	cursor_hide(vport);
1500	palkovsky	1571	vport->cursor_active = IPC_GET_ARG1(call);
3707	decky	1572	cursor_show(vport);
		1573	retval = EOK;
1486	palkovsky	1574	break;
1485	palkovsky	1575	case FB_GET_CSIZE:
2619	jermar	1576	ipc_answer_2(callid, EOK, vport->rows, vport->cols);
1485	palkovsky	1577	continue;
1486	palkovsky	1578	case FB_SCROLL:
3707	decky	1579	scroll = IPC_GET_ARG1(call);
		1580	if ((scroll > (int) vport->rows) \|\| (scroll < (-(int) vport->rows))) {
1486	palkovsky	1581	retval = EINVAL;
		1582	break;
		1583	}
1673	palkovsky	1584	cursor_hide(vport);
3707	decky	1585	vport_scroll(vport, scroll);
		1586	cursor_show(vport);
		1587	retval = EOK;
1486	palkovsky	1588	break;
		1589	case FB_VIEWPORT_SWITCH:
		1590	i = IPC_GET_ARG1(call);
3707	decky	1591	if (i >= MAX_VIEWPORTS) {
1486	palkovsky	1592	retval = EINVAL;
		1593	break;
		1594	}
3707	decky	1595	if (!viewports[i].initialized) {
1486	palkovsky	1596	retval = EADDRNOTAVAIL;
		1597	break;
		1598	}
1673	palkovsky	1599	cursor_hide(vport);
1486	palkovsky	1600	vp = i;
		1601	vport = &viewports[vp];
3707	decky	1602	cursor_show(vport);
		1603	retval = EOK;
1486	palkovsky	1604	break;
		1605	case FB_VIEWPORT_CREATE:
3707	decky	1606	retval = vport_create(IPC_GET_ARG1(call) >> 16,
2619	jermar	1607	IPC_GET_ARG1(call) & 0xffff,
		1608	IPC_GET_ARG2(call) >> 16,
		1609	IPC_GET_ARG2(call) & 0xffff);
1486	palkovsky	1610	break;
		1611	case FB_VIEWPORT_DELETE:
		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	}
3707	decky	1621	viewports[i].initialized = false;
		1622	if (viewports[i].glyphs)
		1623	free(viewports[i].glyphs);
		1624	if (viewports[i].bgpixel)
		1625	free(viewports[i].bgpixel);
		1626	if (viewports[i].backbuf)
		1627	free(viewports[i].backbuf);
		1628	retval = EOK;
1486	palkovsky	1629	break;
		1630	case FB_SET_STYLE:
3767	svoboda	1631	retval = fb_set_style(vport, IPC_GET_ARG1(call));
		1632	break;
		1633	case FB_SET_COLOR:
		1634	retval = fb_set_color(vport, IPC_GET_ARG1(call),
		1635	IPC_GET_ARG2(call), IPC_GET_ARG3(call));
		1636	break;
		1637	case FB_SET_RGB_COLOR:
		1638	vport->attr.fg_color = IPC_GET_ARG1(call);
		1639	vport->attr.bg_color = IPC_GET_ARG2(call);
3707	decky	1640	retval = EOK;
1486	palkovsky	1641	break;
		1642	case FB_GET_RESOLUTION:
2619	jermar	1643	ipc_answer_2(callid, EOK, screen.xres, screen.yres);
1486	palkovsky	1644	continue;
1707	palkovsky	1645	case FB_POINTER_MOVE:
3707	decky	1646	pointer_enabled = true;
1711	palkovsky	1647	mouse_move(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
3707	decky	1648	retval = EOK;
1707	palkovsky	1649	break;
1485	palkovsky	1650	default:
		1651	retval = ENOENT;
		1652	}
2619	jermar	1653	ipc_answer_0(callid, retval);
1363	vana	1654	}
1485	palkovsky	1655	}
1363	vana	1656
3707	decky	1657	/** Initialization of framebuffer
		1658	*
		1659	*/
		1660	int fb_init(void)
1485	palkovsky	1661	{
1490	palkovsky	1662	async_set_client_connection(fb_client_connection);
1485	palkovsky	1663
3707	decky	1664	void fb_ph_addr = (void ) sysinfo_value("fb.address.physical");
		1665	unsigned int fb_offset = sysinfo_value("fb.offset");
		1666	unsigned int fb_width = sysinfo_value("fb.width");
		1667	unsigned int fb_height = sysinfo_value("fb.height");
		1668	unsigned int fb_scanline = sysinfo_value("fb.scanline");
		1669	unsigned int fb_visual = sysinfo_value("fb.visual");
		1670
		1671	unsigned int fbsize = fb_scanline * fb_height;
		1672	void *fb_addr = as_get_mappable_page(fbsize);
		1673
3908	decky	1674	if (physmem_map(fb_ph_addr + fb_offset, fb_addr,
		1675	ALIGN_UP(fbsize, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ \| AS_AREA_WRITE) != 0)
		1676	return -1;
3707	decky	1677
		1678	if (screen_init(fb_addr, fb_width, fb_height, fb_scanline, fb_visual))
1993	decky	1679	return 0;
		1680
		1681	return -1;
1363	vana	1682	}
1490	palkovsky	1683
3707	decky	1684	/**
1649	cejka	1685	* @}
		1686	*/

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(root)/trunk/uspace/srv/fb/fb.c – Rev 4000