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
4226	svoboda	71	#define GLYPH_UNAVAIL '?'
		72
3707	decky	73	#define MAX_ANIM_LEN 8
		74	#define MAX_ANIMATIONS 4
		75	#define MAX_PIXMAPS 256 /*< Maximum number of saved pixmaps /
		76	#define MAX_VIEWPORTS 128 /*< Viewport is a rectangular area on the screen /
1363	vana	77
3744	svoboda	78	/** Function to render a pixel from a RGB value. */
3707	decky	79	typedef void (rgb_conv_t)(void , uint32_t);
1363	vana	80
3744	svoboda	81	/** Function to draw a glyph. */
		82	typedef void (*dg_t)(unsigned int x, unsigned int y, bool cursor,
4226	svoboda	83	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
3744	svoboda	84
1485	palkovsky	85	struct {
3707	decky	86	uint8_t *fb_addr;
		87
1875	jermar	88	unsigned int xres;
		89	unsigned int yres;
3707	decky	90
1875	jermar	91	unsigned int scanline;
3707	decky	92	unsigned int glyphscanline;
		93
1875	jermar	94	unsigned int pixelbytes;
3707	decky	95	unsigned int glyphbytes;
		96
		97	rgb_conv_t rgb_conv;
1485	palkovsky	98	} screen;
1363	vana	99
3767	svoboda	100	/** Backbuffer character cell. */
1485	palkovsky	101	typedef struct {
4211	svoboda	102	uint32_t glyph;
3767	svoboda	103	uint32_t fg_color;
		104	uint32_t bg_color;
		105	} bb_cell_t;
		106
		107	typedef struct {
3707	decky	108	bool initialized;
		109	unsigned int x;
		110	unsigned int y;
		111	unsigned int width;
		112	unsigned int height;
		113
1485	palkovsky	114	/* Text support in window */
3707	decky	115	unsigned int cols;
		116	unsigned int rows;
		117
3744	svoboda	118	/*
		119	* Style and glyphs for text printing
		120	*/
		121
3767	svoboda	122	/** Current attributes. */
		123	attr_rgb_t attr;
3744	svoboda	124
		125	/** Pre-rendered mask for rendering glyphs. Different viewports
		126	* might use different drawing functions depending on whether their
		127	* scanlines are aligned on a word boundary.*/
3707	decky	128	uint8_t *glyphs;
3744	svoboda	129
3707	decky	130	uint8_t *bgpixel;
3744	svoboda	131
		132	/** Glyph drawing function for this viewport. */
		133	dg_t dglyph;
3707	decky	134
1485	palkovsky	135	/* Auto-cursor position */
3707	decky	136	bool cursor_active;
		137	unsigned int cur_col;
		138	unsigned int cur_row;
		139	bool cursor_shown;
		140
		141	/* Back buffer */
3767	svoboda	142	bb_cell_t *backbuf;
3707	decky	143	unsigned int bbsize;
1485	palkovsky	144	} viewport_t;
1363	vana	145
1646	palkovsky	146	typedef struct {
3707	decky	147	bool initialized;
		148	bool enabled;
1646	palkovsky	149	unsigned int vp;
3707	decky	150
1646	palkovsky	151	unsigned int pos;
		152	unsigned int animlen;
		153	unsigned int pixmaps[MAX_ANIM_LEN];
		154	} animation_t;
3707	decky	155
1646	palkovsky	156	static animation_t animations[MAX_ANIMATIONS];
3707	decky	157	static bool anims_enabled;
1646	palkovsky	158
1552	palkovsky	159	typedef struct {
		160	unsigned int width;
		161	unsigned int height;
1781	jermar	162	uint8_t *data;
1552	palkovsky	163	} pixmap_t;
3707	decky	164
1552	palkovsky	165	static pixmap_t pixmaps[MAX_PIXMAPS];
1485	palkovsky	166	static viewport_t viewports[128];
		167
3707	decky	168	static bool client_connected = false; /*< Allow only 1 connection /
1485	palkovsky	169
3767	svoboda	170	static uint32_t color_table[16] = {
		171	[COLOR_BLACK] = 0x000000,
		172	[COLOR_BLUE] = 0x0000f0,
		173	[COLOR_GREEN] = 0x00f000,
		174	[COLOR_CYAN] = 0x00f0f0,
		175	[COLOR_RED] = 0xf00000,
		176	[COLOR_MAGENTA] = 0xf000f0,
		177	[COLOR_YELLOW] = 0xf0f000,
		178	[COLOR_WHITE] = 0xf0f0f0,
		179
		180	[8 + COLOR_BLACK] = 0x000000,
		181	[8 + COLOR_BLUE] = 0x0000ff,
		182	[8 + COLOR_GREEN] = 0x00ff00,
		183	[8 + COLOR_CYAN] = 0x00ffff,
		184	[8 + COLOR_RED] = 0xff0000,
		185	[8 + COLOR_MAGENTA] = 0xff00ff,
		186	[8 + COLOR_YELLOW] = 0xffff00,
		187	[8 + COLOR_WHITE] = 0xffffff,
		188	};
		189
3792	svoboda	190	static int rgb_from_attr(attr_rgb_t rgb, const attrs_t a);
3767	svoboda	191	static int rgb_from_style(attr_rgb_t *rgb, int style);
		192	static int rgb_from_idx(attr_rgb_t *rgb, ipcarg_t fg_color,
		193	ipcarg_t bg_color, ipcarg_t flags);
		194
		195	static int fb_set_color(viewport_t *vport, ipcarg_t fg_color,
		196	ipcarg_t bg_color, ipcarg_t attr);
		197
3744	svoboda	198	static void draw_glyph_aligned(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	static void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
4211	svoboda	201	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
3744	svoboda	202
3739	svoboda	203	static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
3723	svoboda	204	unsigned int row);
		205
		206
3707	decky	207	#define RED(x, bits) ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
		208	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
		209	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
1363	vana	210
3707	decky	211	#define COL2X(col) ((col) * FONT_WIDTH)
		212	#define ROW2Y(row) ((row) * FONT_SCANLINES)
1363	vana	213
3707	decky	214	#define X2COL(x) ((x) / FONT_WIDTH)
		215	#define Y2ROW(y) ((y) / FONT_SCANLINES)
1363	vana	216
3707	decky	217	#define FB_POS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)
		218	#define BB_POS(vport, col, row) ((row) * vport->cols + (col))
		219	#define GLYPH_POS(glyph, y, cursor) (((glyph) + (cursor) * FONT_GLYPHS) * screen.glyphbytes + (y) * screen.glyphscanline)
1875	jermar	220
1363	vana	221
3707	decky	222	/** ARGB 8:8:8:8 conversion
		223	*
		224	*/
		225	static void rgb_0888(void *dst, uint32_t rgb)
1363	vana	226	{
3707	decky	227	((uint32_t ) dst) = rgb & 0xffffff;
1363	vana	228	}
		229
1994	decky	230
3707	decky	231	/** ABGR 8:8:8:8 conversion
		232	*
		233	*/
		234	static void bgr_0888(void *dst, uint32_t rgb)
1994	decky	235	{
3707	decky	236	((uint32_t ) dst)
		237	= (BLUE(rgb, 8) << 16) \| (GREEN(rgb, 8) << 8) \| RED(rgb, 8);
1994	decky	238	}
		239
3707	decky	240
3882	decky	241	/** RGB 8:8:8 conversion
3707	decky	242	*
		243	*/
		244	static void rgb_888(void *dst, uint32_t rgb)
1363	vana	245	{
3710	decky	246	((uint8_t *) dst)[0] = BLUE(rgb, 8);
		247	((uint8_t *) dst)[1] = GREEN(rgb, 8);
		248	((uint8_t *) dst)[2] = RED(rgb, 8);
1363	vana	249	}
		250
		251
3882	decky	252	/** BGR 8:8:8 conversion
		253	*
		254	*/
		255	static void bgr_888(void *dst, uint32_t rgb)
		256	{
		257	((uint8_t *) dst)[0] = RED(rgb, 8);
		258	((uint8_t *) dst)[1] = GREEN(rgb, 8);
		259	((uint8_t *) dst)[2] = BLUE(rgb, 8);
		260	}
		261
		262
3707	decky	263	/** RGB 5:5:5 conversion
		264	*
		265	*/
		266	static void rgb_555(void *dst, uint32_t rgb)
1993	decky	267	{
3707	decky	268	((uint16_t ) dst)
		269	= (RED(rgb, 5) << 10) \| (GREEN(rgb, 5) << 5) \| BLUE(rgb, 5);
1993	decky	270	}
		271
		272
3707	decky	273	/** RGB 5:6:5 conversion
		274	*
		275	*/
		276	static void rgb_565(void *dst, uint32_t rgb)
1363	vana	277	{
3707	decky	278	((uint16_t ) dst)
		279	= (RED(rgb, 5) << 11) \| (GREEN(rgb, 6) << 5) \| BLUE(rgb, 5);
1363	vana	280	}
		281
		282
3707	decky	283	/** RGB 3:2:3
		284	*
		285	*/
		286	static void rgb_323(void *dst, uint32_t rgb)
1363	vana	287	{
3707	decky	288	((uint8_t ) dst)
		289	= ~((RED(rgb, 3) << 5) \| (GREEN(rgb, 2) << 3) \| BLUE(rgb, 3));
1363	vana	290	}
		291
3725	svoboda	292	/** Draw a filled rectangle.
		293	*
		294	* @note Need real implementation that does not access VRAM twice.
		295	*/
3723	svoboda	296	static void draw_filled_rect(unsigned int x0, unsigned int y0, unsigned int x1,
		297	unsigned int y1, uint32_t color)
		298	{
		299	unsigned int x, y;
3725	svoboda	300	unsigned int copy_bytes;
		301
		302	uint8_t sp, dp;
3723	svoboda	303	uint8_t cbuf[4];
1363	vana	304
3725	svoboda	305	if (y0 >= y1 \|\| x0 >= x1) return;
3723	svoboda	306	screen.rgb_conv(cbuf, color);
		307
3725	svoboda	308	sp = &screen.fb_addr[FB_POS(x0, y0)];
		309	dp = sp;
		310
		311	/* Draw the first line. */
		312	for (x = x0; x < x1; x++) {
		313	memcpy(dp, cbuf, screen.pixelbytes);
		314	dp += screen.pixelbytes;
3723	svoboda	315	}
3725	svoboda	316
		317	dp = sp + screen.scanline;
		318	copy_bytes = (x1 - x0) * screen.pixelbytes;
		319
		320	/* Draw the remaining lines by copying. */
		321	for (y = y0 + 1; y < y1; y++) {
		322	memcpy(dp, sp, copy_bytes);
		323	dp += screen.scanline;
		324	}
3723	svoboda	325	}
		326
		327	/** Redraw viewport.
1498	palkovsky	328	*
3707	decky	329	* @param vport Viewport to redraw
		330	*
1498	palkovsky	331	*/
3707	decky	332	static void vport_redraw(viewport_t *vport)
1485	palkovsky	333	{
3723	svoboda	334	unsigned int row, col;
		335
3707	decky	336	for (row = 0; row < vport->rows; row++) {
3723	svoboda	337	for (col = 0; col < vport->cols; col++) {
3739	svoboda	338	draw_vp_glyph(vport, false, col, row);
3707	decky	339	}
1672	palkovsky	340	}
3723	svoboda	341
3707	decky	342	if (COL2X(vport->cols) < vport->width) {
3723	svoboda	343	draw_filled_rect(
		344	vport->x + COL2X(vport->cols), vport->y,
		345	vport->x + vport->width, vport->y + vport->height,
3767	svoboda	346	vport->attr.bg_color);
1672	palkovsky	347	}
3723	svoboda	348
3707	decky	349	if (ROW2Y(vport->rows) < vport->height) {
3723	svoboda	350	draw_filled_rect(
		351	vport->x, vport->y + ROW2Y(vport->rows),
		352	vport->x + vport->width, vport->y + vport->height,
3767	svoboda	353	vport->attr.bg_color);
1672	palkovsky	354	}
1559	palkovsky	355	}
		356
3767	svoboda	357	static void backbuf_clear(bb_cell_t *backbuf, size_t len, uint32_t fg_color,
		358	uint32_t bg_color)
		359	{
		360	unsigned i;
3707	decky	361
3767	svoboda	362	for (i = 0; i < len; i++) {
		363	backbuf[i].glyph = 0;
		364	backbuf[i].fg_color = fg_color;
		365	backbuf[i].bg_color = bg_color;
		366	}
		367	}
		368
3724	svoboda	369	/** Clear viewport.
3707	decky	370	*
		371	* @param vport Viewport to clear
		372	*
		373	*/
		374	static void vport_clear(viewport_t *vport)
1363	vana	375	{
3767	svoboda	376	backbuf_clear(vport->backbuf, vport->cols * vport->rows,
		377	vport->attr.fg_color, vport->attr.bg_color);
3707	decky	378	vport_redraw(vport);
1363	vana	379	}
		380
3724	svoboda	381	/** Scroll viewport by the specified number of lines.
1485	palkovsky	382	*
1709	jermar	383	* @param vport Viewport to scroll
3707	decky	384	* @param lines Number of lines to scroll
		385	*
1485	palkovsky	386	*/
3707	decky	387	static void vport_scroll(viewport_t *vport, int lines)
1363	vana	388	{
3726	svoboda	389	unsigned int row, col;
3739	svoboda	390	unsigned int x, y;
4232	svoboda	391	uint32_t glyph;
3767	svoboda	392	uint32_t fg_color;
		393	uint32_t bg_color;
		394	bb_cell_t bbp, xbp;
3726	svoboda	395
3724	svoboda	396	/*
3739	svoboda	397	* Redraw.
		398	*/
		399
		400	y = vport->y;
		401	for (row = 0; row < vport->rows; row++) {
		402	x = vport->x;
		403	for (col = 0; col < vport->cols; col++) {
		404	if ((row + lines >= 0) && (row + lines < vport->rows)) {
3767	svoboda	405	xbp = &vport->backbuf[BB_POS(vport, col, row + lines)];
		406	bbp = &vport->backbuf[BB_POS(vport, col, row)];
3739	svoboda	407
3767	svoboda	408	glyph = xbp->glyph;
		409	fg_color = xbp->fg_color;
		410	bg_color = xbp->bg_color;
		411
		412	if (bbp->glyph == glyph &&
		413	bbp->fg_color == xbp->fg_color &&
		414	bbp->bg_color == xbp->bg_color) {
3739	svoboda	415	x += FONT_WIDTH;
		416	continue;
		417	}
		418	} else {
		419	glyph = 0;
3767	svoboda	420	fg_color = vport->attr.fg_color;
		421	bg_color = vport->attr.bg_color;
3739	svoboda	422	}
		423
3744	svoboda	424	(*vport->dglyph)(x, y, false, vport->glyphs, glyph,
3767	svoboda	425	fg_color, bg_color);
3739	svoboda	426	x += FONT_WIDTH;
		427	}
		428	y += FONT_SCANLINES;
		429	}
		430
		431	/*
3724	svoboda	432	* Scroll backbuffer.
		433	*/
3723	svoboda	434
1672	palkovsky	435	if (lines > 0) {
3739	svoboda	436	memmove(vport->backbuf, vport->backbuf + vport->cols * lines,
3767	svoboda	437	vport->cols * (vport->rows - lines) * sizeof(bb_cell_t));
		438	backbuf_clear(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)],
		439	vport->cols * lines, vport->attr.fg_color, vport->attr.bg_color);
3707	decky	440	} else {
3739	svoboda	441	memmove(vport->backbuf - vport->cols * lines, vport->backbuf,
3767	svoboda	442	vport->cols * (vport->rows + lines) * sizeof(bb_cell_t));
		443	backbuf_clear(vport->backbuf, - vport->cols * lines,
		444	vport->attr.fg_color, vport->attr.bg_color);
1672	palkovsky	445	}
		446	}
		447
3707	decky	448	/** Render glyphs
1558	palkovsky	449	*
3707	decky	450	* Convert glyphs from device independent font
		451	* description to current visual representation.
		452	*
		453	* @param vport Viewport
		454	*
1558	palkovsky	455	*/
3707	decky	456	static void render_glyphs(viewport_t* vport)
1363	vana	457	{
3707	decky	458	unsigned int glyph;
		459
		460	for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
		461	unsigned int y;
		462
		463	for (y = 0; y < FONT_SCANLINES; y++) {
		464	unsigned int x;
		465
		466	for (x = 0; x < FONT_WIDTH; x++) {
		467	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, false) + x * screen.pixelbytes],
4232	svoboda	468	(fb_font[glyph][y] & (1 << (7 - x)))
3744	svoboda	469	? 0xffffff : 0x000000);
3707	decky	470
3744	svoboda	471	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes],
4232	svoboda	472	(fb_font[glyph][y] & (1 << (7 - x)))
3744	svoboda	473	? 0x000000 : 0xffffff);
3707	decky	474	}
1509	palkovsky	475	}
		476	}
3707	decky	477
3767	svoboda	478	screen.rgb_conv(vport->bgpixel, vport->attr.bg_color);
1363	vana	479	}
		480
		481
1485	palkovsky	482	/** Create new viewport
1363	vana	483	*
3707	decky	484	* @param x Origin of the viewport (x).
		485	* @param y Origin of the viewport (y).
		486	* @param width Width of the viewport.
		487	* @param height Height of the viewport.
		488	*
		489	* @return New viewport number.
		490	*
1363	vana	491	*/
3707	decky	492	static int vport_create(unsigned int x, unsigned int y,
		493	unsigned int width, unsigned int height)
1363	vana	494	{
3707	decky	495	unsigned int i;
		496
2070	jermar	497	for (i = 0; i < MAX_VIEWPORTS; i++) {
1485	palkovsky	498	if (!viewports[i].initialized)
1363	vana	499	break;
		500	}
1485	palkovsky	501	if (i == MAX_VIEWPORTS)
		502	return ELIMIT;
3707	decky	503
		504	unsigned int cols = width / FONT_WIDTH;
		505	unsigned int rows = height / FONT_SCANLINES;
3767	svoboda	506	unsigned int bbsize = cols * rows * sizeof(bb_cell_t);
3707	decky	507	unsigned int glyphsize = 2 * FONT_GLYPHS * screen.glyphbytes;
3744	svoboda	508	unsigned int word_size = sizeof(unsigned long);
3707	decky	509
3767	svoboda	510	bb_cell_t backbuf = (bb_cell_t ) malloc(bbsize);
3707	decky	511	if (!backbuf)
		512	return ENOMEM;
		513
		514	uint8_t glyphs = (uint8_t ) malloc(glyphsize);
		515	if (!glyphs) {
		516	free(backbuf);
		517	return ENOMEM;
		518	}
		519
		520	uint8_t bgpixel = (uint8_t ) malloc(screen.pixelbytes);
		521	if (!bgpixel) {
		522	free(glyphs);
		523	free(backbuf);
		524	return ENOMEM;
		525	}
3767	svoboda	526
		527	backbuf_clear(backbuf, cols * rows, DEFAULT_FGCOLOR, DEFAULT_BGCOLOR);
3707	decky	528	memset(glyphs, 0, glyphsize);
		529	memset(bgpixel, 0, screen.pixelbytes);
		530
1485	palkovsky	531	viewports[i].x = x;
		532	viewports[i].y = y;
		533	viewports[i].width = width;
		534	viewports[i].height = height;
1363	vana	535
3707	decky	536	viewports[i].cols = cols;
		537	viewports[i].rows = rows;
		538
3767	svoboda	539	viewports[i].attr.bg_color = DEFAULT_BGCOLOR;
		540	viewports[i].attr.fg_color = DEFAULT_FGCOLOR;
1363	vana	541
3707	decky	542	viewports[i].glyphs = glyphs;
		543	viewports[i].bgpixel = bgpixel;
3744	svoboda	544
		545	/*
		546	* Conditions necessary to select aligned version:
		547	*
		548	* - word size is divisible by pixelbytes
		549	* - cell scanline size is divisible by word size
		550	* - cell scanlines are word-aligned
		551	*/
		552	if ((word_size % screen.pixelbytes) == 0 &&
		553	(FONT_WIDTH * screen.pixelbytes) % word_size == 0 &&
		554	(x * screen.pixelbytes) % word_size == 0 &&
		555	screen.scanline % word_size == 0) {
		556
		557	viewports[i].dglyph = draw_glyph_aligned;
		558	} else {
		559	viewports[i].dglyph = draw_glyph_fallback;
		560	}
		561
1489	palkovsky	562	viewports[i].cur_col = 0;
		563	viewports[i].cur_row = 0;
3707	decky	564	viewports[i].cursor_active = false;
		565	viewports[i].cursor_shown = false;
		566
		567	viewports[i].bbsize = bbsize;
		568	viewports[i].backbuf = backbuf;
		569
		570	viewports[i].initialized = true;
		571
		572	render_glyphs(&viewports[i]);
		573
1485	palkovsky	574	return i;
1363	vana	575	}
		576
3707	decky	577
1363	vana	578	/** Initialize framebuffer as a chardev output device
		579	*
3707	decky	580	* @param addr Address of the framebuffer
		581	* @param xres Screen width in pixels
		582	* @param yres Screen height in pixels
		583	* @param visual Bits per pixel (8, 16, 24, 32)
		584	* @param scan Bytes per one scanline
1363	vana	585	*
		586	*/
3707	decky	587	static bool screen_init(void *addr, unsigned int xres, unsigned int yres,
		588	unsigned int scan, unsigned int visual)
1363	vana	589	{
1993	decky	590	switch (visual) {
		591	case VISUAL_INDIRECT_8:
3707	decky	592	screen.rgb_conv = rgb_323;
1886	jermar	593	screen.pixelbytes = 1;
		594	break;
1993	decky	595	case VISUAL_RGB_5_5_5:
3707	decky	596	screen.rgb_conv = rgb_555;
1886	jermar	597	screen.pixelbytes = 2;
		598	break;
1993	decky	599	case VISUAL_RGB_5_6_5:
3707	decky	600	screen.rgb_conv = rgb_565;
1993	decky	601	screen.pixelbytes = 2;
1886	jermar	602	break;
1993	decky	603	case VISUAL_RGB_8_8_8:
3707	decky	604	screen.rgb_conv = rgb_888;
1993	decky	605	screen.pixelbytes = 3;
		606	break;
3882	decky	607	case VISUAL_BGR_8_8_8:
		608	screen.rgb_conv = bgr_888;
		609	screen.pixelbytes = 3;
		610	break;
1993	decky	611	case VISUAL_RGB_8_8_8_0:
3707	decky	612	screen.rgb_conv = rgb_888;
1886	jermar	613	screen.pixelbytes = 4;
		614	break;
1993	decky	615	case VISUAL_RGB_0_8_8_8:
3707	decky	616	screen.rgb_conv = rgb_0888;
1993	decky	617	screen.pixelbytes = 4;
		618	break;
1994	decky	619	case VISUAL_BGR_0_8_8_8:
3707	decky	620	screen.rgb_conv = bgr_0888;
1994	decky	621	screen.pixelbytes = 4;
		622	break;
1993	decky	623	default:
		624	return false;
1363	vana	625	}
		626
3707	decky	627	screen.fb_addr = (unsigned char *) addr;
1485	palkovsky	628	screen.xres = xres;
		629	screen.yres = yres;
		630	screen.scanline = scan;
1363	vana	631
3707	decky	632	screen.glyphscanline = FONT_WIDTH * screen.pixelbytes;
		633	screen.glyphbytes = screen.glyphscanline * FONT_SCANLINES;
		634
1485	palkovsky	635	/* Create first viewport */
3707	decky	636	vport_create(0, 0, xres, yres);
1993	decky	637
		638	return true;
1485	palkovsky	639	}
1363	vana	640
3707	decky	641
3744	svoboda	642	/** Draw a glyph, takes advantage of alignment.
3707	decky	643	*
3744	svoboda	644	* This version can only be used if the following conditions are met:
3739	svoboda	645	*
3744	svoboda	646	* - word size is divisible by pixelbytes
		647	* - cell scanline size is divisible by word size
		648	* - cell scanlines are word-aligned
		649	*
		650	* It makes use of the pre-rendered mask to process (possibly) several
		651	* pixels at once (word size / pixelbytes pixels at a time are processed)
		652	* making it very fast. Most notably this version is not applicable at 24 bits
		653	* per pixel.
		654	*
		655	* @param x x coordinate of top-left corner on screen.
		656	* @param y y coordinate of top-left corner on screen.
		657	* @param cursor Draw glyph with cursor
		658	* @param glyphs Pointer to font bitmap.
		659	* @param glyph Code of the glyph to draw.
		660	* @param fg_color Foreground color.
		661	* @param bg_color Backgroudn color.
3739	svoboda	662	*/
3744	svoboda	663	static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
4211	svoboda	664	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color)
3739	svoboda	665	{
3744	svoboda	666	unsigned int i, yd;
		667	unsigned long fg_buf, bg_buf;
		668	unsigned long maskp, dp;
		669	unsigned long mask;
		670	unsigned int ww, d_add;
		671
		672	/*
		673	* Prepare a pair of words, one filled with foreground-color
		674	* pattern and the other filled with background-color pattern.
		675	*/
		676	for (i = 0; i < sizeof(unsigned long) / screen.pixelbytes; i++) {
		677	screen.rgb_conv(&((uint8_t )&fg_buf)[i screen.pixelbytes],
		678	fg_color);
		679	screen.rgb_conv(&((uint8_t )&bg_buf)[i screen.pixelbytes],
		680	bg_color);
		681	}
		682
		683	/* Pointer to the current position in the mask. */
		684	maskp = (unsigned long *) &glyphs[GLYPH_POS(glyph, 0, cursor)];
		685
		686	/* Pointer to the current position on the screen. */
		687	dp = (unsigned long *) &screen.fb_addr[FB_POS(x, y)];
		688
		689	/* Width of the character cell in words. */
		690	ww = FONT_WIDTH * screen.pixelbytes / sizeof(unsigned long);
		691
		692	/* Offset to add when moving to another screen scanline. */
		693	d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
		694
		695	for (yd = 0; yd < FONT_SCANLINES; yd++) {
		696	/*
		697	* Now process the cell scanline, combining foreground
		698	* and background color patters using the pre-rendered mask.
		699	*/
		700	for (i = 0; i < ww; i++) {
		701	mask = *maskp++;
		702	*dp++ = (fg_buf & mask) \| (bg_buf & ~mask);
		703	}
		704
		705	/* Move to the beginning of the next scanline of the cell. */
		706	dp = (unsigned long ) ((uint8_t ) dp + d_add);
		707	}
3739	svoboda	708	}
		709
3744	svoboda	710	/** Draw a glyph, fallback version.
		711	*
		712	* This version does not make use of the pre-rendered mask, it uses
		713	* the font bitmap directly. It works always, but it is slower.
		714	*
		715	* @param x x coordinate of top-left corner on screen.
		716	* @param y y coordinate of top-left corner on screen.
		717	* @param cursor Draw glyph with cursor
		718	* @param glyphs Pointer to font bitmap.
		719	* @param glyph Code of the glyph to draw.
		720	* @param fg_color Foreground color.
		721	* @param bg_color Backgroudn color.
		722	*/
		723	void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
4211	svoboda	724	uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color)
3744	svoboda	725	{
		726	unsigned int i, j, yd;
		727	uint8_t fg_buf[4], bg_buf[4];
		728	uint8_t dp, sp;
		729	unsigned int d_add;
		730	uint8_t b;
		731
		732	/* Pre-render 1x the foreground and background color pixels. */
		733	if (cursor) {
		734	screen.rgb_conv(fg_buf, bg_color);
		735	screen.rgb_conv(bg_buf, fg_color);
		736	} else {
		737	screen.rgb_conv(fg_buf, fg_color);
		738	screen.rgb_conv(bg_buf, bg_color);
		739	}
		740
		741	/* Pointer to the current position on the screen. */
		742	dp = (uint8_t *) &screen.fb_addr[FB_POS(x, y)];
		743
		744	/* Offset to add when moving to another screen scanline. */
		745	d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
		746
		747	for (yd = 0; yd < FONT_SCANLINES; yd++) {
		748	/* Byte containing bits of the glyph scanline. */
4232	svoboda	749	b = fb_font[glyph][yd];
3744	svoboda	750
		751	for (i = 0; i < FONT_WIDTH; i++) {
		752	/* Choose color based on the current bit. */
		753	sp = (b & 0x80) ? fg_buf : bg_buf;
		754
		755	/* Copy the pixel. */
		756	for (j = 0; j < screen.pixelbytes; j++) {
		757	dp++ = sp++;
		758	}
		759
		760	/* Move to the next bit. */
		761	b = b << 1;
		762	}
		763
		764	/* Move to the beginning of the next scanline of the cell. */
		765	dp += d_add;
		766	}
		767	}
		768
3739	svoboda	769	/** Draw glyph at specified position in viewport.
		770	*
3707	decky	771	* @param vport Viewport identification
		772	* @param cursor Draw glyph with cursor
		773	* @param col Screen position relative to viewport
		774	* @param row Screen position relative to viewport
		775	*
		776	*/
3739	svoboda	777	static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
		778	unsigned int row)
1500	palkovsky	779	{
3707	decky	780	unsigned int x = vport->x + COL2X(col);
		781	unsigned int y = vport->y + ROW2Y(row);
3767	svoboda	782
4211	svoboda	783	uint32_t glyph;
3767	svoboda	784	uint32_t fg_color;
		785	uint32_t bg_color;
3707	decky	786
3767	svoboda	787	glyph = vport->backbuf[BB_POS(vport, col, row)].glyph;
		788	fg_color = vport->backbuf[BB_POS(vport, col, row)].fg_color;
		789	bg_color = vport->backbuf[BB_POS(vport, col, row)].bg_color;
3744	svoboda	790
		791	(*vport->dglyph)(x, y, cursor, vport->glyphs, glyph,
3767	svoboda	792	fg_color, bg_color);
3707	decky	793	}
		794
		795	/** Hide cursor if it is shown
		796	*
		797	*/
		798	static void cursor_hide(viewport_t *vport)
		799	{
		800	if ((vport->cursor_active) && (vport->cursor_shown)) {
3739	svoboda	801	draw_vp_glyph(vport, false, vport->cur_col, vport->cur_row);
3707	decky	802	vport->cursor_shown = false;
1500	palkovsky	803	}
		804	}
		805
3707	decky	806
		807	/** Show cursor if cursor showing is enabled
		808	*
		809	*/
		810	static void cursor_show(viewport_t *vport)
1500	palkovsky	811	{
		812	/* Do not check for cursor_shown */
		813	if (vport->cursor_active) {
3739	svoboda	814	draw_vp_glyph(vport, true, vport->cur_col, vport->cur_row);
3707	decky	815	vport->cursor_shown = true;
1500	palkovsky	816	}
		817	}
		818
3707	decky	819
		820	/** Invert cursor, if it is enabled
		821	*
		822	*/
		823	static void cursor_blink(viewport_t *vport)
1500	palkovsky	824	{
		825	if (vport->cursor_shown)
1673	palkovsky	826	cursor_hide(vport);
1500	palkovsky	827	else
3707	decky	828	cursor_show(vport);
1500	palkovsky	829	}
		830
3707	decky	831
		832	/** Draw character at given position relative to viewport
		833	*
		834	* @param vport Viewport identification
		835	* @param c Character to draw
		836	* @param col Screen position relative to viewport
		837	* @param row Screen position relative to viewport
		838	*
1498	palkovsky	839	*/
4211	svoboda	840	static void draw_char(viewport_t *vport, wchar_t c, unsigned int col, unsigned int row)
1486	palkovsky	841	{
3767	svoboda	842	bb_cell_t *bbp;
		843
3707	decky	844	/* Do not hide cursor if we are going to overwrite it */
		845	if ((vport->cursor_active) && (vport->cursor_shown) &&
		846	((vport->cur_col != col) \|\| (vport->cur_row != row)))
		847	cursor_hide(vport);
3767	svoboda	848
		849	bbp = &vport->backbuf[BB_POS(vport, col, row)];
4232	svoboda	850	bbp->glyph = fb_font_glyph(c);
3767	svoboda	851	bbp->fg_color = vport->attr.fg_color;
		852	bbp->bg_color = vport->attr.bg_color;
		853
3739	svoboda	854	draw_vp_glyph(vport, false, col, row);
3707	decky	855
1489	palkovsky	856	vport->cur_col = col;
		857	vport->cur_row = row;
3707	decky	858
1489	palkovsky	859	vport->cur_col++;
2025	jermar	860	if (vport->cur_col >= vport->cols) {
1489	palkovsky	861	vport->cur_col = 0;
		862	vport->cur_row++;
		863	if (vport->cur_row >= vport->rows)
		864	vport->cur_row--;
1486	palkovsky	865	}
3707	decky	866
		867	cursor_show(vport);
1486	palkovsky	868	}
		869
4167	svoboda	870	/** Draw text data to viewport.
1552	palkovsky	871	*
1709	jermar	872	* @param vport Viewport id
4167	svoboda	873	* @param data Text data.
		874	* @param x Leftmost column of the area.
		875	* @param y Topmost row of the area.
		876	* @param w Number of rows.
		877	* @param h Number of columns.
1552	palkovsky	878	*/
4167	svoboda	879	static void draw_text_data(viewport_t vport, keyfield_t data, unsigned int x,
		880	unsigned int y, unsigned int w, unsigned int h)
1505	palkovsky	881	{
4167	svoboda	882	unsigned int i, j;
3767	svoboda	883	bb_cell_t *bbp;
		884	attrs_t *a;
		885	attr_rgb_t rgb;
		886
4167	svoboda	887	for (j = 0; j < h; j++) {
		888	for (i = 0; i < w; i++) {
		889	unsigned int col = x + i;
		890	unsigned int row = y + j;
3767	svoboda	891
4167	svoboda	892	bbp = &vport->backbuf[BB_POS(vport, col, row)];
3767	svoboda	893
4167	svoboda	894	a = &data[j * w + i].attrs;
		895	rgb_from_attr(&rgb, a);
		896
4232	svoboda	897	bbp->glyph = fb_font_glyph(data[j * w + i].character);
4167	svoboda	898	bbp->fg_color = rgb.fg_color;
		899	bbp->bg_color = rgb.bg_color;
		900
		901	draw_vp_glyph(vport, false, col, row);
		902	}
1505	palkovsky	903	}
3707	decky	904	cursor_show(vport);
1505	palkovsky	905	}
		906
3707	decky	907
		908	static void putpixel_pixmap(void *data, unsigned int x, unsigned int y, uint32_t color)
1555	palkovsky	909	{
3707	decky	910	int pm = ((int ) data);
		911	pixmap_t *pmap = &pixmaps[pm];
		912	unsigned int pos = (y * pmap->width + x) * screen.pixelbytes;
1555	palkovsky	913
3707	decky	914	screen.rgb_conv(&pmap->data[pos], color);
		915	}
		916
		917
		918	static void putpixel(void *data, unsigned int x, unsigned int y, uint32_t color)
		919	{
		920	viewport_t vport = (viewport_t ) data;
		921	unsigned int dx = vport->x + x;
		922	unsigned int dy = vport->y + y;
		923
		924	screen.rgb_conv(&screen.fb_addr[FB_POS(dx, dy)], color);
		925	}
		926
		927
		928	/** Return first free pixmap
		929	*
		930	*/
		931	static int find_free_pixmap(void)
		932	{
		933	unsigned int i;
		934
		935	for (i = 0; i < MAX_PIXMAPS; i++)
1555	palkovsky	936	if (!pixmaps[i].data)
		937	return i;
3707	decky	938
1555	palkovsky	939	return -1;
		940	}
		941
		942
3707	decky	943	/** Create a new pixmap and return appropriate ID
		944	*
		945	*/
		946	static int shm2pixmap(unsigned char *shm, size_t size)
1555	palkovsky	947	{
		948	int pm;
		949	pixmap_t *pmap;
3707	decky	950
1555	palkovsky	951	pm = find_free_pixmap();
		952	if (pm == -1)
		953	return ELIMIT;
3707	decky	954
1555	palkovsky	955	pmap = &pixmaps[pm];
		956
		957	if (ppm_get_data(shm, size, &pmap->width, &pmap->height))
		958	return EINVAL;
		959
		960	pmap->data = malloc(pmap->width * pmap->height * screen.pixelbytes);
		961	if (!pmap->data)
		962	return ENOMEM;
3707	decky	963
		964	ppm_draw(shm, size, 0, 0, pmap->width, pmap->height, putpixel_pixmap, (void *) &pm);
		965
1555	palkovsky	966	return pm;
		967	}
		968
3707	decky	969
1552	palkovsky	970	/** Handle shared memory communication calls
		971	*
		972	* Protocol for drawing pixmaps:
		973	* - FB_PREPARE_SHM(client shm identification)
2025	jermar	974	* - IPC_M_AS_AREA_SEND
3707	decky	975	* - FB_DRAW_PPM(startx, starty)
1552	palkovsky	976	* - FB_DROP_SHM
		977	*
		978	* Protocol for text drawing
2025	jermar	979	* - IPC_M_AS_AREA_SEND
1552	palkovsky	980	* - FB_DRAW_TEXT_DATA
		981	*
		982	* @param callid Callid of the current call
3707	decky	983	* @param call Current call data
		984	* @param vp Active viewport
1552	palkovsky	985	*
3707	decky	986	* @return false if the call was not handled byt this function, true otherwise
		987	*
		988	* Note: this function is not threads safe, you would have
1552	palkovsky	989	* to redefine static variables with __thread
3707	decky	990	*
1552	palkovsky	991	*/
3707	decky	992	static bool shm_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
1547	palkovsky	993	{
		994	static keyfield_t *interbuffer = NULL;
		995	static size_t intersize = 0;
3707	decky	996
1720	palkovsky	997	static unsigned char *shm = NULL;
1555	palkovsky	998	static ipcarg_t shm_id = 0;
		999	static size_t shm_size;
3707	decky	1000
		1001	bool handled = true;
		1002	int retval = EOK;
1547	palkovsky	1003	viewport_t *vport = &viewports[vp];
3707	decky	1004	unsigned int x;
		1005	unsigned int y;
4167	svoboda	1006	unsigned int w;
		1007	unsigned int h;
3707	decky	1008
1547	palkovsky	1009	switch (IPC_GET_METHOD(*call)) {
2677	jermar	1010	case IPC_M_SHARE_OUT:
1547	palkovsky	1011	/* We accept one area for data interchange */
1555	palkovsky	1012	if (IPC_GET_ARG1(*call) == shm_id) {
2141	jermar	1013	void dest = as_get_mappable_page(IPC_GET_ARG2(call));
1555	palkovsky	1014	shm_size = IPC_GET_ARG2(*call);
3707	decky	1015	if (!ipc_answer_1(callid, EOK, (sysarg_t) dest))
1555	palkovsky	1016	shm = dest;
1547	palkovsky	1017	else
1555	palkovsky	1018	shm_id = 0;
3707	decky	1019
1555	palkovsky	1020	if (shm[0] != 'P')
3707	decky	1021	return false;
		1022
		1023	return true;
1547	palkovsky	1024	} else {
		1025	intersize = IPC_GET_ARG2(*call);
2015	jermar	1026	receive_comm_area(callid, call, (void *) &interbuffer);
1547	palkovsky	1027	}
3707	decky	1028	return true;
1547	palkovsky	1029	case FB_PREPARE_SHM:
1555	palkovsky	1030	if (shm_id)
1547	palkovsky	1031	retval = EBUSY;
		1032	else
1555	palkovsky	1033	shm_id = IPC_GET_ARG1(*call);
1547	palkovsky	1034	break;
		1035
		1036	case FB_DROP_SHM:
1555	palkovsky	1037	if (shm) {
		1038	as_area_destroy(shm);
		1039	shm = NULL;
1547	palkovsky	1040	}
1555	palkovsky	1041	shm_id = 0;
1547	palkovsky	1042	break;
3707	decky	1043
1555	palkovsky	1044	case FB_SHM2PIXMAP:
		1045	if (!shm) {
		1046	retval = EINVAL;
		1047	break;
		1048	}
		1049	retval = shm2pixmap(shm, shm_size);
		1050	break;
1547	palkovsky	1051	case FB_DRAW_PPM:
1555	palkovsky	1052	if (!shm) {
1547	palkovsky	1053	retval = EINVAL;
		1054	break;
		1055	}
		1056	x = IPC_GET_ARG1(*call);
		1057	y = IPC_GET_ARG2(*call);
3707	decky	1058
		1059	if ((x > vport->width) \|\| (y > vport->height)) {
1547	palkovsky	1060	retval = EINVAL;
		1061	break;
		1062	}
		1063
2025	jermar	1064	ppm_draw(shm, shm_size, IPC_GET_ARG1(*call),
3707	decky	1065	IPC_GET_ARG2(call), vport->width - x, vport->height - y, putpixel, (void ) vport);
1547	palkovsky	1066	break;
		1067	case FB_DRAW_TEXT_DATA:
4167	svoboda	1068	x = IPC_GET_ARG1(*call);
		1069	y = IPC_GET_ARG2(*call);
		1070	w = IPC_GET_ARG3(*call);
		1071	h = IPC_GET_ARG4(*call);
1547	palkovsky	1072	if (!interbuffer) {
		1073	retval = EINVAL;
		1074	break;
		1075	}
4167	svoboda	1076	if (x + w > vport->cols \|\| y + h > vport->rows) {
1547	palkovsky	1077	retval = EINVAL;
		1078	break;
		1079	}
4167	svoboda	1080	if (intersize < w * h * sizeof(*interbuffer)) {
		1081	retval = EINVAL;
		1082	break;
		1083	}
		1084	draw_text_data(vport, interbuffer, x, y, w, h);
1547	palkovsky	1085	break;
		1086	default:
3707	decky	1087	handled = false;
1547	palkovsky	1088	}
		1089
		1090	if (handled)
2619	jermar	1091	ipc_answer_0(callid, retval);
1547	palkovsky	1092	return handled;
		1093	}
		1094
3707	decky	1095
		1096	static void copy_vp_to_pixmap(viewport_t vport, pixmap_t pmap)
1552	palkovsky	1097	{
3707	decky	1098	unsigned int width = vport->width;
		1099	unsigned int height = vport->height;
		1100
1711	palkovsky	1101	if (width + vport->x > screen.xres)
		1102	width = screen.xres - vport->x;
2301	decky	1103	if (height + vport->y > screen.yres)
1711	palkovsky	1104	height = screen.yres - vport->y;
2301	decky	1105
3707	decky	1106	unsigned int realwidth = pmap->width <= width ? pmap->width : width;
		1107	unsigned int realheight = pmap->height <= height ? pmap->height : height;
2301	decky	1108
3707	decky	1109	unsigned int srcrowsize = vport->width * screen.pixelbytes;
		1110	unsigned int realrowsize = realwidth * screen.pixelbytes;
		1111
		1112	unsigned int y;
2301	decky	1113	for (y = 0; y < realheight; y++) {
3707	decky	1114	unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
		1115	memcpy(pmap->data + srcrowsize * y, screen.fb_addr + tmp, realrowsize);
1711	palkovsky	1116	}
		1117	}
		1118
3707	decky	1119
		1120	/** Save viewport to pixmap
		1121	*
		1122	*/
		1123	static int save_vp_to_pixmap(viewport_t *vport)
1711	palkovsky	1124	{
		1125	int pm;
		1126	pixmap_t *pmap;
3707	decky	1127
1552	palkovsky	1128	pm = find_free_pixmap();
		1129	if (pm == -1)
		1130	return ELIMIT;
		1131
		1132	pmap = &pixmaps[pm];
		1133	pmap->data = malloc(screen.pixelbytes * vport->width * vport->height);
		1134	if (!pmap->data)
		1135	return ENOMEM;
3707	decky	1136
1552	palkovsky	1137	pmap->width = vport->width;
		1138	pmap->height = vport->height;
3707	decky	1139
1711	palkovsky	1140	copy_vp_to_pixmap(vport, pmap);
1552	palkovsky	1141
		1142	return pm;
		1143	}
		1144
3707	decky	1145
1552	palkovsky	1146	/** Draw pixmap on screen
		1147	*
		1148	* @param vp Viewport to draw on
		1149	* @param pm Pixmap identifier
3707	decky	1150	*
1552	palkovsky	1151	*/
		1152	static int draw_pixmap(int vp, int pm)
		1153	{
		1154	pixmap_t *pmap = &pixmaps[pm];
		1155	viewport_t *vport = &viewports[vp];
3707	decky	1156
		1157	unsigned int width = vport->width;
		1158	unsigned int height = vport->height;
		1159
1711	palkovsky	1160	if (width + vport->x > screen.xres)
		1161	width = screen.xres - vport->x;
		1162	if (height + vport->y > screen.yres)
		1163	height = screen.yres - vport->y;
3707	decky	1164
1552	palkovsky	1165	if (!pmap->data)
		1166	return EINVAL;
3707	decky	1167
		1168	unsigned int realwidth = pmap->width <= width ? pmap->width : width;
		1169	unsigned int realheight = pmap->height <= height ? pmap->height : height;
		1170
		1171	unsigned int srcrowsize = vport->width * screen.pixelbytes;
		1172	unsigned int realrowsize = realwidth * screen.pixelbytes;
		1173
		1174	unsigned int y;
2070	jermar	1175	for (y = 0; y < realheight; y++) {
3707	decky	1176	unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
		1177	memcpy(screen.fb_addr + tmp, pmap->data + y * srcrowsize, realrowsize);
1552	palkovsky	1178	}
3707	decky	1179
		1180	return EOK;
1552	palkovsky	1181	}
		1182
3707	decky	1183
		1184	/** Tick animation one step forward
		1185	*
		1186	*/
		1187	static void anims_tick(void)
1646	palkovsky	1188	{
3707	decky	1189	unsigned int i;
1646	palkovsky	1190	static int counts = 0;
		1191
		1192	/* Limit redrawing */
2025	jermar	1193	counts = (counts + 1) % 8;
1646	palkovsky	1194	if (counts)
		1195	return;
		1196
2070	jermar	1197	for (i = 0; i < MAX_ANIMATIONS; i++) {
3707	decky	1198	if ((!animations[i].animlen) \|\| (!animations[i].initialized) \|\|
		1199	(!animations[i].enabled))
1646	palkovsky	1200	continue;
3707	decky	1201
		1202	draw_pixmap(animations[i].vp, animations[i].pixmaps[animations[i].pos]);
		1203	animations[i].pos = (animations[i].pos + 1) % animations[i].animlen;
1646	palkovsky	1204	}
		1205	}
		1206
1711	palkovsky	1207
3707	decky	1208	static unsigned int pointer_x;
		1209	static unsigned int pointer_y;
		1210	static bool pointer_shown, pointer_enabled;
1711	palkovsky	1211	static int pointer_vport = -1;
		1212	static int pointer_pixmap = -1;
		1213
3707	decky	1214
		1215	static void mouse_show(void)
1711	palkovsky	1216	{
2070	jermar	1217	int i, j;
1711	palkovsky	1218	int visibility;
		1219	int color;
		1220	int bytepos;
3707	decky	1221
		1222	if ((pointer_shown) \|\| (!pointer_enabled))
1723	palkovsky	1223	return;
3707	decky	1224
3723	svoboda	1225	/* Save image under the pointer. */
1711	palkovsky	1226	if (pointer_vport == -1) {
3707	decky	1227	pointer_vport = vport_create(pointer_x, pointer_y, pointer_width, pointer_height);
1711	palkovsky	1228	if (pointer_vport < 0)
		1229	return;
		1230	} else {
		1231	viewports[pointer_vport].x = pointer_x;
		1232	viewports[pointer_vport].y = pointer_y;
		1233	}
3707	decky	1234
1711	palkovsky	1235	if (pointer_pixmap == -1)
		1236	pointer_pixmap = save_vp_to_pixmap(&viewports[pointer_vport]);
		1237	else
3707	decky	1238	copy_vp_to_pixmap(&viewports[pointer_vport], &pixmaps[pointer_pixmap]);
		1239
3723	svoboda	1240	/* Draw mouse pointer. */
2025	jermar	1241	for (i = 0; i < pointer_height; i++)
		1242	for (j = 0; j < pointer_width; j++) {
		1243	bytepos = i * ((pointer_width - 1) / 8 + 1) + j / 8;
2070	jermar	1244	visibility = pointer_mask_bits[bytepos] &
2619	jermar	1245	(1 << (j % 8));
1711	palkovsky	1246	if (visibility) {
2619	jermar	1247	color = pointer_bits[bytepos] &
		1248	(1 << (j % 8)) ? 0 : 0xffffff;
2025	jermar	1249	if (pointer_x + j < screen.xres && pointer_y +
2619	jermar	1250	i < screen.yres)
2025	jermar	1251	putpixel(&viewports[0], pointer_x + j,
2619	jermar	1252	pointer_y + i, color);
1711	palkovsky	1253	}
		1254	}
		1255	pointer_shown = 1;
		1256	}
		1257
3707	decky	1258
		1259	static void mouse_hide(void)
1711	palkovsky	1260	{
3723	svoboda	1261	/* Restore image under the pointer. */
1711	palkovsky	1262	if (pointer_shown) {
		1263	draw_pixmap(pointer_vport, pointer_pixmap);
		1264	pointer_shown = 0;
		1265	}
		1266	}
		1267
3707	decky	1268
		1269	static void mouse_move(unsigned int x, unsigned int y)
1711	palkovsky	1270	{
		1271	mouse_hide();
		1272	pointer_x = x;
		1273	pointer_y = y;
		1274	mouse_show();
		1275	}
		1276
3707	decky	1277
		1278	static int anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
1646	palkovsky	1279	{
3707	decky	1280	bool handled = true;
		1281	int retval = EOK;
		1282	int i, nvp;
1646	palkovsky	1283	int newval;
3707	decky	1284
1646	palkovsky	1285	switch (IPC_GET_METHOD(*call)) {
		1286	case FB_ANIM_CREATE:
		1287	nvp = IPC_GET_ARG1(*call);
		1288	if (nvp == -1)
		1289	nvp = vp;
2025	jermar	1290	if (nvp >= MAX_VIEWPORTS \|\| nvp < 0 \|\|
		1291	!viewports[nvp].initialized) {
1646	palkovsky	1292	retval = EINVAL;
		1293	break;
		1294	}
2025	jermar	1295	for (i = 0; i < MAX_ANIMATIONS; i++) {
		1296	if (!animations[i].initialized)
1646	palkovsky	1297	break;
		1298	}
		1299	if (i == MAX_ANIMATIONS) {
		1300	retval = ELIMIT;
		1301	break;
		1302	}
		1303	animations[i].initialized = 1;
		1304	animations[i].animlen = 0;
		1305	animations[i].pos = 0;
		1306	animations[i].enabled = 0;
		1307	animations[i].vp = nvp;
		1308	retval = i;
		1309	break;
		1310	case FB_ANIM_DROP:
		1311	i = IPC_GET_ARG1(*call);
1720	palkovsky	1312	if (i >= MAX_ANIMATIONS \|\| i < 0) {
1646	palkovsky	1313	retval = EINVAL;
		1314	break;
		1315	}
		1316	animations[i].initialized = 0;
		1317	break;
		1318	case FB_ANIM_ADDPIXMAP:
		1319	i = IPC_GET_ARG1(*call);
2025	jermar	1320	if (i >= MAX_ANIMATIONS \|\| i < 0 \|\|
		1321	!animations[i].initialized) {
1646	palkovsky	1322	retval = EINVAL;
		1323	break;
		1324	}
		1325	if (animations[i].animlen == MAX_ANIM_LEN) {
		1326	retval = ELIMIT;
		1327	break;
		1328	}
		1329	newval = IPC_GET_ARG2(*call);
2025	jermar	1330	if (newval < 0 \|\| newval > MAX_PIXMAPS \|\|
		1331	!pixmaps[newval].data) {
1646	palkovsky	1332	retval = EINVAL;
		1333	break;
		1334	}
		1335	animations[i].pixmaps[animations[i].animlen++] = newval;
		1336	break;
		1337	case FB_ANIM_CHGVP:
		1338	i = IPC_GET_ARG1(*call);
		1339	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1340	retval = EINVAL;
		1341	break;
		1342	}
		1343	nvp = IPC_GET_ARG2(*call);
		1344	if (nvp == -1)
		1345	nvp = vp;
2025	jermar	1346	if (nvp >= MAX_VIEWPORTS \|\| nvp < 0 \|\|
		1347	!viewports[nvp].initialized) {
1646	palkovsky	1348	retval = EINVAL;
		1349	break;
		1350	}
		1351	animations[i].vp = nvp;
		1352	break;
		1353	case FB_ANIM_START:
		1354	case FB_ANIM_STOP:
		1355	i = IPC_GET_ARG1(*call);
		1356	if (i >= MAX_ANIMATIONS \|\| i < 0) {
		1357	retval = EINVAL;
		1358	break;
		1359	}
		1360	newval = (IPC_GET_METHOD(*call) == FB_ANIM_START);
		1361	if (newval ^ animations[i].enabled) {
		1362	animations[i].enabled = newval;
		1363	anims_enabled += newval ? 1 : -1;
		1364	}
		1365	break;
		1366	default:
		1367	handled = 0;
		1368	}
		1369	if (handled)
2619	jermar	1370	ipc_answer_0(callid, retval);
1646	palkovsky	1371	return handled;
		1372	}
		1373
3707	decky	1374
		1375	/** Handler for messages concerning pixmap handling
		1376	*
		1377	*/
		1378	static int pixmap_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
1552	palkovsky	1379	{
3707	decky	1380	bool handled = true;
		1381	int retval = EOK;
		1382	int i, nvp;
		1383
1552	palkovsky	1384	switch (IPC_GET_METHOD(*call)) {
		1385	case FB_VP_DRAW_PIXMAP:
		1386	nvp = IPC_GET_ARG1(*call);
		1387	if (nvp == -1)
		1388	nvp = vp;
2025	jermar	1389	if (nvp < 0 \|\| nvp >= MAX_VIEWPORTS \|\|
		1390	!viewports[nvp].initialized) {
1552	palkovsky	1391	retval = EINVAL;
		1392	break;
		1393	}
		1394	i = IPC_GET_ARG2(*call);
		1395	retval = draw_pixmap(nvp, i);
		1396	break;
		1397	case FB_VP2PIXMAP:
		1398	nvp = IPC_GET_ARG1(*call);
		1399	if (nvp == -1)
		1400	nvp = vp;
2025	jermar	1401	if (nvp < 0 \|\| nvp >= MAX_VIEWPORTS \|\|
		1402	!viewports[nvp].initialized)
1552	palkovsky	1403	retval = EINVAL;
		1404	else
1711	palkovsky	1405	retval = save_vp_to_pixmap(&viewports[nvp]);
1552	palkovsky	1406	break;
		1407	case FB_DROP_PIXMAP:
		1408	i = IPC_GET_ARG1(*call);
		1409	if (i >= MAX_PIXMAPS) {
		1410	retval = EINVAL;
		1411	break;
		1412	}
		1413	if (pixmaps[i].data) {
		1414	free(pixmaps[i].data);
		1415	pixmaps[i].data = NULL;
		1416	}
		1417	break;
		1418	default:
		1419	handled = 0;
		1420	}
3707	decky	1421
1552	palkovsky	1422	if (handled)
2619	jermar	1423	ipc_answer_0(callid, retval);
1552	palkovsky	1424	return handled;
		1425
		1426	}
		1427
3767	svoboda	1428	static int rgb_from_style(attr_rgb_t *rgb, int style)
		1429	{
		1430	switch (style) {
		1431	case STYLE_NORMAL:
		1432	rgb->fg_color = color_table[COLOR_BLACK];
		1433	rgb->bg_color = color_table[COLOR_WHITE];
		1434	break;
		1435	case STYLE_EMPHASIS:
		1436	rgb->fg_color = color_table[COLOR_RED];
		1437	rgb->bg_color = color_table[COLOR_WHITE];
		1438	break;
		1439	default:
		1440	return EINVAL;
		1441	}
		1442
		1443	return EOK;
		1444	}
		1445
		1446	static int rgb_from_idx(attr_rgb_t *rgb, ipcarg_t fg_color,
		1447	ipcarg_t bg_color, ipcarg_t flags)
		1448	{
		1449	fg_color = (fg_color & 7) \| ((flags & CATTR_BRIGHT) ? 8 : 0);
		1450	bg_color = (bg_color & 7) \| ((flags & CATTR_BRIGHT) ? 8 : 0);
		1451
		1452	rgb->fg_color = color_table[fg_color];
		1453	rgb->bg_color = color_table[bg_color];
		1454
		1455	return EOK;
		1456	}
		1457
3792	svoboda	1458	static int rgb_from_attr(attr_rgb_t rgb, const attrs_t a)
		1459	{
		1460	int rc;
		1461
		1462	switch (a->t) {
		1463	case at_style:
		1464	rc = rgb_from_style(rgb, a->a.s.style);
		1465	break;
		1466	case at_idx:
		1467	rc = rgb_from_idx(rgb, a->a.i.fg_color,
		1468	a->a.i.bg_color, a->a.i.flags);
		1469	break;
		1470	case at_rgb:
		1471	*rgb = a->a.r;
		1472	rc = EOK;
		1473	break;
		1474	}
		1475
		1476	return rc;
		1477	}
		1478
3767	svoboda	1479	static int fb_set_style(viewport_t *vport, ipcarg_t style)
		1480	{
		1481	return rgb_from_style(&vport->attr, (int) style);
		1482	}
		1483
		1484	static int fb_set_color(viewport_t *vport, ipcarg_t fg_color,
		1485	ipcarg_t bg_color, ipcarg_t flags)
		1486	{
		1487	return rgb_from_idx(&vport->attr, fg_color, bg_color, flags);
		1488	}
		1489
1498	palkovsky	1490	/** Function for handling connections to FB
		1491	*
		1492	*/
3707	decky	1493	static void fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
1363	vana	1494	{
3707	decky	1495	unsigned int vp = 0;
		1496	viewport_t *vport = &viewports[vp];
		1497
1485	palkovsky	1498	if (client_connected) {
2619	jermar	1499	ipc_answer_0(iid, ELIMIT);
1485	palkovsky	1500	return;
		1501	}
3707	decky	1502
		1503	/* Accept connection */
		1504	client_connected = true;
		1505	ipc_answer_0(iid, EOK);
		1506
		1507	while (true) {
		1508	ipc_callid_t callid;
		1509	ipc_call_t call;
		1510	int retval;
		1511	unsigned int i;
		1512	int scroll;
4232	svoboda	1513	wchar_t ch;
3707	decky	1514	unsigned int row, col;
		1515
		1516	if ((vport->cursor_active) \|\| (anims_enabled))
2070	jermar	1517	callid = async_get_call_timeout(&call, 250000);
1640	palkovsky	1518	else
		1519	callid = async_get_call(&call);
3707	decky	1520
1713	palkovsky	1521	mouse_hide();
1500	palkovsky	1522	if (!callid) {
1673	palkovsky	1523	cursor_blink(vport);
1646	palkovsky	1524	anims_tick();
1723	palkovsky	1525	mouse_show();
1500	palkovsky	1526	continue;
		1527	}
3707	decky	1528
1547	palkovsky	1529	if (shm_handle(callid, &call, vp))
		1530	continue;
3707	decky	1531
1552	palkovsky	1532	if (pixmap_handle(callid, &call, vp))
		1533	continue;
3707	decky	1534
1646	palkovsky	1535	if (anim_handle(callid, &call, vp))
		1536	continue;
3707	decky	1537
		1538	switch (IPC_GET_METHOD(call)) {
1485	palkovsky	1539	case IPC_M_PHONE_HUNGUP:
3707	decky	1540	client_connected = false;
		1541
		1542	/* Cleanup other viewports */
2025	jermar	1543	for (i = 1; i < MAX_VIEWPORTS; i++)
3707	decky	1544	vport->initialized = false;
		1545
		1546	/* Exit thread */
		1547	return;
		1548
1485	palkovsky	1549	case FB_PUTCHAR:
4232	svoboda	1550	ch = IPC_GET_ARG1(call);
1485	palkovsky	1551	row = IPC_GET_ARG2(call);
		1552	col = IPC_GET_ARG3(call);
3707	decky	1553
		1554	if ((col >= vport->cols) \|\| (row >= vport->rows)) {
1485	palkovsky	1555	retval = EINVAL;
		1556	break;
		1557	}
2619	jermar	1558	ipc_answer_0(callid, EOK);
3707	decky	1559
4232	svoboda	1560	draw_char(vport, ch, col, row);
3707	decky	1561
		1562	/* Message already answered */
		1563	continue;
1485	palkovsky	1564	case FB_CLEAR:
3707	decky	1565	vport_clear(vport);
		1566	cursor_show(vport);
		1567	retval = EOK;
1485	palkovsky	1568	break;
3707	decky	1569	case FB_CURSOR_GOTO:
1486	palkovsky	1570	row = IPC_GET_ARG1(call);
		1571	col = IPC_GET_ARG2(call);
3707	decky	1572
		1573	if ((col >= vport->cols) \|\| (row >= vport->rows)) {
1486	palkovsky	1574	retval = EINVAL;
		1575	break;
		1576	}
3707	decky	1577	retval = EOK;
		1578
1673	palkovsky	1579	cursor_hide(vport);
1486	palkovsky	1580	vport->cur_col = col;
		1581	vport->cur_row = row;
3707	decky	1582	cursor_show(vport);
		1583	break;
1486	palkovsky	1584	case FB_CURSOR_VISIBILITY:
1673	palkovsky	1585	cursor_hide(vport);
1500	palkovsky	1586	vport->cursor_active = IPC_GET_ARG1(call);
3707	decky	1587	cursor_show(vport);
		1588	retval = EOK;
1486	palkovsky	1589	break;
1485	palkovsky	1590	case FB_GET_CSIZE:
2619	jermar	1591	ipc_answer_2(callid, EOK, vport->rows, vport->cols);
1485	palkovsky	1592	continue;
1486	palkovsky	1593	case FB_SCROLL:
3707	decky	1594	scroll = IPC_GET_ARG1(call);
		1595	if ((scroll > (int) vport->rows) \|\| (scroll < (-(int) vport->rows))) {
1486	palkovsky	1596	retval = EINVAL;
		1597	break;
		1598	}
1673	palkovsky	1599	cursor_hide(vport);
3707	decky	1600	vport_scroll(vport, scroll);
		1601	cursor_show(vport);
		1602	retval = EOK;
1486	palkovsky	1603	break;
		1604	case FB_VIEWPORT_SWITCH:
		1605	i = IPC_GET_ARG1(call);
3707	decky	1606	if (i >= MAX_VIEWPORTS) {
1486	palkovsky	1607	retval = EINVAL;
		1608	break;
		1609	}
3707	decky	1610	if (!viewports[i].initialized) {
1486	palkovsky	1611	retval = EADDRNOTAVAIL;
		1612	break;
		1613	}
1673	palkovsky	1614	cursor_hide(vport);
1486	palkovsky	1615	vp = i;
		1616	vport = &viewports[vp];
3707	decky	1617	cursor_show(vport);
		1618	retval = EOK;
1486	palkovsky	1619	break;
		1620	case FB_VIEWPORT_CREATE:
3707	decky	1621	retval = vport_create(IPC_GET_ARG1(call) >> 16,
2619	jermar	1622	IPC_GET_ARG1(call) & 0xffff,
		1623	IPC_GET_ARG2(call) >> 16,
		1624	IPC_GET_ARG2(call) & 0xffff);
1486	palkovsky	1625	break;
		1626	case FB_VIEWPORT_DELETE:
		1627	i = IPC_GET_ARG1(call);
3707	decky	1628	if (i >= MAX_VIEWPORTS) {
1486	palkovsky	1629	retval = EINVAL;
		1630	break;
		1631	}
3707	decky	1632	if (!viewports[i].initialized) {
1486	palkovsky	1633	retval = EADDRNOTAVAIL;
		1634	break;
		1635	}
3707	decky	1636	viewports[i].initialized = false;
		1637	if (viewports[i].glyphs)
		1638	free(viewports[i].glyphs);
		1639	if (viewports[i].bgpixel)
		1640	free(viewports[i].bgpixel);
		1641	if (viewports[i].backbuf)
		1642	free(viewports[i].backbuf);
		1643	retval = EOK;
1486	palkovsky	1644	break;
		1645	case FB_SET_STYLE:
3767	svoboda	1646	retval = fb_set_style(vport, IPC_GET_ARG1(call));
		1647	break;
		1648	case FB_SET_COLOR:
		1649	retval = fb_set_color(vport, IPC_GET_ARG1(call),
		1650	IPC_GET_ARG2(call), IPC_GET_ARG3(call));
		1651	break;
		1652	case FB_SET_RGB_COLOR:
		1653	vport->attr.fg_color = IPC_GET_ARG1(call);
		1654	vport->attr.bg_color = IPC_GET_ARG2(call);
3707	decky	1655	retval = EOK;
1486	palkovsky	1656	break;
		1657	case FB_GET_RESOLUTION:
2619	jermar	1658	ipc_answer_2(callid, EOK, screen.xres, screen.yres);
1486	palkovsky	1659	continue;
1707	palkovsky	1660	case FB_POINTER_MOVE:
3707	decky	1661	pointer_enabled = true;
1711	palkovsky	1662	mouse_move(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
3707	decky	1663	retval = EOK;
1707	palkovsky	1664	break;
1485	palkovsky	1665	default:
		1666	retval = ENOENT;
		1667	}
2619	jermar	1668	ipc_answer_0(callid, retval);
1363	vana	1669	}
1485	palkovsky	1670	}
1363	vana	1671
3707	decky	1672	/** Initialization of framebuffer
		1673	*
		1674	*/
		1675	int fb_init(void)
1485	palkovsky	1676	{
1490	palkovsky	1677	async_set_client_connection(fb_client_connection);
1485	palkovsky	1678
3707	decky	1679	void fb_ph_addr = (void ) sysinfo_value("fb.address.physical");
		1680	unsigned int fb_offset = sysinfo_value("fb.offset");
		1681	unsigned int fb_width = sysinfo_value("fb.width");
		1682	unsigned int fb_height = sysinfo_value("fb.height");
		1683	unsigned int fb_scanline = sysinfo_value("fb.scanline");
		1684	unsigned int fb_visual = sysinfo_value("fb.visual");
		1685
		1686	unsigned int fbsize = fb_scanline * fb_height;
		1687	void *fb_addr = as_get_mappable_page(fbsize);
		1688
3908	decky	1689	if (physmem_map(fb_ph_addr + fb_offset, fb_addr,
		1690	ALIGN_UP(fbsize, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ \| AS_AREA_WRITE) != 0)
		1691	return -1;
3707	decky	1692
		1693	if (screen_init(fb_addr, fb_width, fb_height, fb_scanline, fb_visual))
1993	decky	1694	return 0;
		1695
		1696	return -1;
1363	vana	1697	}
1490	palkovsky	1698
3707	decky	1699	/**
1649	cejka	1700	* @}
		1701	*/

Subversion Repositories HelenOS

(root)/trunk/uspace/srv/fb/fb.c @ 4685 – Rev 4232