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


/*
 * Copyright (c) 2008 Martin Decky
 * Copyright (c) 2006 Jakub Vana
 * Copyright (c) 2006 Ondrej Palkovsky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/**
 * @defgroup fb Graphical framebuffer
 * @brief   HelenOS graphical framebuffer.
 * @ingroup fbs
 * @{
 */
 
/** @file
 */
 
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <ddi.h>
#include <sysinfo.h>
#include <align.h>
#include <as.h>
#include <ipc/fb.h>
#include <ipc/ipc.h>
#include <ipc/ns.h>
#include <ipc/services.h>
#include <kernel/errno.h>
#include <kernel/genarch/fb/visuals.h>
#include <async.h>
#include <bool.h>
 
#include "font-8x16.h"
#include "fb.h"
#include "main.h"
#include "../console/screenbuffer.h"
#include "ppm.h"
 
#include "pointer.xbm"
#include "pointer_mask.xbm"
 
#define DEFAULT_BGCOLOR  0xf0f0f0
#define DEFAULT_FGCOLOR  0x000000
 
#define MAX_ANIM_LEN     8
#define MAX_ANIMATIONS   4
#define MAX_PIXMAPS      256  /**< Maximum number of saved pixmaps */
#define MAX_VIEWPORTS    128  /**< Viewport is a rectangular area on the screen */
 
typedef void (*rgb_conv_t)(void *, uint32_t);
 
struct {
    uint8_t *fb_addr;
   
    unsigned int xres;
    unsigned int yres;
   
    unsigned int scanline;
    unsigned int glyphscanline;
   
    unsigned int pixelbytes;
    unsigned int glyphbytes;
   
    rgb_conv_t rgb_conv;
} screen;
 
typedef struct {
    bool initialized;
    unsigned int x;
    unsigned int y;
    unsigned int width;
    unsigned int height;
   
    /* Text support in window */
    unsigned int cols;
    unsigned int rows;
   
    /* Style and glyphs for text printing */
    style_t style;
    uint8_t *glyphs;
    uint8_t *bgpixel;
   
    /* Auto-cursor position */
    bool cursor_active;
    unsigned int cur_col;
    unsigned int cur_row;
    bool cursor_shown;
   
    /* Back buffer */
    unsigned int bbsize;
    uint8_t *backbuf;
} viewport_t;
 
typedef struct {
    bool initialized;
    bool enabled;
    unsigned int vp;
   
    unsigned int pos;
    unsigned int animlen;
    unsigned int pixmaps[MAX_ANIM_LEN];
} animation_t;
 
static animation_t animations[MAX_ANIMATIONS];
static bool anims_enabled;
 
typedef struct {
    unsigned int width;
    unsigned int height;
    uint8_t *data;
} pixmap_t;
 
static pixmap_t pixmaps[MAX_PIXMAPS];
static viewport_t viewports[128];
 
static bool client_connected = false;  /**< Allow only 1 connection */
 
#define RED(x, bits)                 ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
#define GREEN(x, bits)               ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
#define BLUE(x, bits)                ((x >> (8 - bits)) & ((1 << bits) - 1))
 
#define COL2X(col)                   ((col) * FONT_WIDTH)
#define ROW2Y(row)                   ((row) * FONT_SCANLINES)
 
#define X2COL(x)                     ((x) / FONT_WIDTH)
#define Y2ROW(y)                     ((y) / FONT_SCANLINES)
 
#define FB_POS(x, y)                 ((y) * screen.scanline + (x) * screen.pixelbytes)
#define BB_POS(vport, col, row)      ((row) * vport->cols + (col))
#define GLYPH_POS(glyph, y, cursor)  (((glyph) + (cursor) * FONT_GLYPHS) * screen.glyphbytes + (y) * screen.glyphscanline)
 
 
/** ARGB 8:8:8:8 conversion
 *
 */
static void rgb_0888(void *dst, uint32_t rgb)
{
    *((uint32_t *) dst) = rgb & 0xffffff;
}
 
 
/** ABGR 8:8:8:8 conversion
 *
 */
static void bgr_0888(void *dst, uint32_t rgb)
{
    *((uint32_t *) dst)
        = (BLUE(rgb, 8) << 16) | (GREEN(rgb, 8) << 8) | RED(rgb, 8);
}
 
 
/** BGR 8:8:8 conversion
 *
 */
static void rgb_888(void *dst, uint32_t rgb)
{
#if defined(FB_INVERT_ENDIAN)
    ((uint8_t *) dst)[0] = RED(rgb, 8);
    ((uint8_t *) dst)[1] = GREEN(rgb, 8);
    ((uint8_t *) dst)[2] = BLUE(rgb, 8);
#else
    ((uint8_t *) dst)[0] = BLUE(rgb, 8);
    ((uint8_t *) dst)[1] = GREEN(rgb, 8);
    ((uint8_t *) dst)[2] = RED(rgb, 8);
#endif
}
 
 
/** RGB 5:5:5 conversion
 *
 */
static void rgb_555(void *dst, uint32_t rgb)
{
    *((uint16_t *) dst)
        = (RED(rgb, 5) << 10) | (GREEN(rgb, 5) << 5) | BLUE(rgb, 5);
}
 
 
/** RGB 5:6:5 conversion
 *
 */
static void rgb_565(void *dst, uint32_t rgb)
{
    *((uint16_t *) dst)
        = (RED(rgb, 5) << 11) | (GREEN(rgb, 6) << 5) | BLUE(rgb, 5);
}
 
 
/** RGB 3:2:3
 *
 */
static void rgb_323(void *dst, uint32_t rgb)
{
    *((uint8_t *) dst)
        = ~((RED(rgb, 3) << 5) | (GREEN(rgb, 2) << 3) | BLUE(rgb, 3));
}
 
 
/** Redraw viewport
 *
 * @param vport Viewport to redraw
 *
 */
static void vport_redraw(viewport_t *vport)
{
    unsigned int row;
   
    for (row = 0; row < vport->rows; row++) {
        unsigned int y = vport->y + ROW2Y(row);
        unsigned int yd;
       
        for (yd = 0; yd < FONT_SCANLINES; yd++) {
            unsigned int x;
            unsigned int col;
           
            for (col = 0, x = vport->x; col < vport->cols; col++, x += FONT_WIDTH)
                memcpy(&screen.fb_addr[FB_POS(x, y + yd)],
                &vport->glyphs[GLYPH_POS(vport->backbuf[BB_POS(vport, col, row)], yd, false)],
                screen.glyphscanline);
        }
    }
   
    if (COL2X(vport->cols) < vport->width) {
        unsigned int y;
       
        for (y = 0; y < vport->height; y++) {
            unsigned int x;
           
            for (x = COL2X(vport->cols); x < vport->width; x++)
                memcpy(&screen.fb_addr[FB_POS(x, y)], vport->bgpixel, screen.pixelbytes);
        }
    }
   
    if (ROW2Y(vport->rows) < vport->height) {
        unsigned int y;
       
        for (y = ROW2Y(vport->rows); y < vport->height; y++) {
            unsigned int x;
           
            for (x = 0; x < vport->width; x++)
                memcpy(&screen.fb_addr[FB_POS(x, y)], vport->bgpixel, screen.pixelbytes);
        }
    }
}
 
 
/** Clear viewport
 *
 * @param vport Viewport to clear
 *
 */
static void vport_clear(viewport_t *vport)
{
    memset(vport->backbuf, 0, vport->bbsize);
    vport_redraw(vport);
}
 
 
/** Scroll viewport by given number of lines
 *
 * @param vport Viewport to scroll
 * @param lines Number of lines to scroll
 *
 */
static void vport_scroll(viewport_t *vport, int lines)
{
    unsigned int row;
   
    for (row = 0; row < vport->rows; row++) {
        unsigned int y = vport->y + ROW2Y(row);
        unsigned int yd;
       
        for (yd = 0; yd < FONT_SCANLINES; yd++) {
            unsigned int x;
            unsigned int col;
           
            for (col = 0, x = vport->x; col < vport->cols; col++, x += FONT_WIDTH) {
                uint8_t glyph;
               
                if ((row + lines >= 0) && (row + lines < vport->rows)) {
                    if (vport->backbuf[BB_POS(vport, col, row)] == vport->backbuf[BB_POS(vport, col, row + lines)])
                        continue;
                   
                    glyph = vport->backbuf[BB_POS(vport, col, row + lines)];
                } else
                    glyph = 0;
               
                memcpy(&screen.fb_addr[FB_POS(x, y + yd)],
                    &vport->glyphs[GLYPH_POS(glyph, yd, false)], screen.glyphscanline);
            }
        }
    }
   
    if (lines > 0) {
        memcpy(vport->backbuf, vport->backbuf + vport->cols * lines, vport->cols * (vport->rows - lines));
        memset(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)], 0, vport->cols * lines);
    } else {
        memcpy(vport->backbuf - vport->cols * lines, vport->backbuf, vport->cols * (vport->rows + lines));
        memset(vport->backbuf, 0, - vport->cols * lines);
    }
}
 
 
/** Render glyphs
 *
 * Convert glyphs from device independent font
 * description to current visual representation.
 *
 * @param vport Viewport
 *
 */
static void render_glyphs(viewport_t* vport)
{
    unsigned int glyph;
   
    for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
        unsigned int y;
       
        for (y = 0; y < FONT_SCANLINES; y++) {
            unsigned int x;
           
            for (x = 0; x < FONT_WIDTH; x++) {
                screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, false) + x * screen.pixelbytes],
                    (fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))
                    ? vport->style.fg_color : vport->style.bg_color);
               
                uint32_t curcolor;
               
                if (y < FONT_SCANLINES - 2)
                    curcolor =
                        (fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))
                        ? vport->style.fg_color : vport->style.bg_color;
                else
                    curcolor = vport->style.fg_color;
               
                screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes], curcolor);
            }
        }
    }
   
    screen.rgb_conv(vport->bgpixel, vport->style.bg_color);
}
 
 
/** Create new viewport
 *
 * @param x      Origin of the viewport (x).
 * @param y      Origin of the viewport (y).
 * @param width  Width of the viewport.
 * @param height Height of the viewport.
 *
 * @return New viewport number.
 *
 */
static int vport_create(unsigned int x, unsigned int y,
    unsigned int width, unsigned int height)
{
    unsigned int i;
   
    for (i = 0; i < MAX_VIEWPORTS; i++) {
        if (!viewports[i].initialized)
            break;
    }
    if (i == MAX_VIEWPORTS)
        return ELIMIT;
   
    unsigned int cols = width / FONT_WIDTH;
    unsigned int rows = height / FONT_SCANLINES;
    unsigned int bbsize = cols * rows;
    unsigned int glyphsize = 2 * FONT_GLYPHS * screen.glyphbytes;
   
    uint8_t *backbuf = (uint8_t *) malloc(bbsize);
    if (!backbuf)
        return ENOMEM;
   
    uint8_t *glyphs = (uint8_t *) malloc(glyphsize);
    if (!glyphs) {
        free(backbuf);
        return ENOMEM;
    }
   
    uint8_t *bgpixel = (uint8_t *) malloc(screen.pixelbytes);
    if (!bgpixel) {
        free(glyphs);
        free(backbuf);
        return ENOMEM;
    }
   
    memset(backbuf, 0, bbsize);
    memset(glyphs, 0, glyphsize);
    memset(bgpixel, 0, screen.pixelbytes);
   
    viewports[i].x = x;
    viewports[i].y = y;
    viewports[i].width = width;
    viewports[i].height = height;
   
    viewports[i].cols = cols;
    viewports[i].rows = rows;
   
    viewports[i].style.bg_color = DEFAULT_BGCOLOR;
    viewports[i].style.fg_color = DEFAULT_FGCOLOR;
   
    viewports[i].glyphs = glyphs;
    viewports[i].bgpixel = bgpixel;
   
    viewports[i].cur_col = 0;
    viewports[i].cur_row = 0;
    viewports[i].cursor_active = false;
    viewports[i].cursor_shown = false;
   
    viewports[i].bbsize = bbsize;
    viewports[i].backbuf = backbuf;
   
    viewports[i].initialized = true;
   
    render_glyphs(&viewports[i]);
   
    return i;
}
 
 
/** Initialize framebuffer as a chardev output device
 *
 * @param addr   Address of the framebuffer
 * @param xres   Screen width in pixels
 * @param yres   Screen height in pixels
 * @param visual Bits per pixel (8, 16, 24, 32)
 * @param scan   Bytes per one scanline
 *
 */
static bool screen_init(void *addr, unsigned int xres, unsigned int yres,
    unsigned int scan, unsigned int visual)
{
    switch (visual) {
    case VISUAL_INDIRECT_8:
        screen.rgb_conv = rgb_323;
        screen.pixelbytes = 1;
        break;
    case VISUAL_RGB_5_5_5:
        screen.rgb_conv = rgb_555;
        screen.pixelbytes = 2;
        break;
    case VISUAL_RGB_5_6_5:
        screen.rgb_conv = rgb_565;
        screen.pixelbytes = 2;
        break;
    case VISUAL_RGB_8_8_8:
        screen.rgb_conv = rgb_888;
        screen.pixelbytes = 3;
        break;
    case VISUAL_RGB_8_8_8_0:
        screen.rgb_conv = rgb_888;
        screen.pixelbytes = 4;
        break;
    case VISUAL_RGB_0_8_8_8:
        screen.rgb_conv = rgb_0888;
        screen.pixelbytes = 4;
        break;
    case VISUAL_BGR_0_8_8_8:
        screen.rgb_conv = bgr_0888;
        screen.pixelbytes = 4;
        break;
    default:
        return false;
    }
 
    screen.fb_addr = (unsigned char *) addr;
    screen.xres = xres;
    screen.yres = yres;
    screen.scanline = scan;
   
    screen.glyphscanline = FONT_WIDTH * screen.pixelbytes;
    screen.glyphbytes = screen.glyphscanline * FONT_SCANLINES;
   
    /* Create first viewport */
    vport_create(0, 0, xres, yres);
   
    return true;
}
 
 
/** Draw glyph at given position relative to viewport
 *
 * @param vport  Viewport identification
 * @param cursor Draw glyph with cursor
 * @param col    Screen position relative to viewport
 * @param row    Screen position relative to viewport
 *
 */
static void draw_glyph(viewport_t *vport, bool cursor, unsigned int col, unsigned int row)
{
    unsigned int x = vport->x + COL2X(col);
    unsigned int y = vport->y + ROW2Y(row);
    unsigned int yd;
   
    uint8_t glyph = vport->backbuf[BB_POS(vport, col, row)];
   
    for (yd = 0; yd < FONT_SCANLINES; yd++)
        memcpy(&screen.fb_addr[FB_POS(x, y + yd)],
            &vport->glyphs[GLYPH_POS(glyph, yd, cursor)], screen.glyphscanline);
}
 
 
/** Hide cursor if it is shown
 *
 */
static void cursor_hide(viewport_t *vport)
{
    if ((vport->cursor_active) && (vport->cursor_shown)) {
        draw_glyph(vport, false, vport->cur_col, vport->cur_row);
        vport->cursor_shown = false;
    }
}
 
 
/** Show cursor if cursor showing is enabled
 *
 */
static void cursor_show(viewport_t *vport)
{
    /* Do not check for cursor_shown */
    if (vport->cursor_active) {
        draw_glyph(vport, true, vport->cur_col, vport->cur_row);
        vport->cursor_shown = true;
    }
}
 
 
/** Invert cursor, if it is enabled
 *
 */
static void cursor_blink(viewport_t *vport)
{
    if (vport->cursor_shown)
        cursor_hide(vport);
    else
        cursor_show(vport);
}
 
 
/** Draw character at given position relative to viewport
 *
 * @param vport  Viewport identification
 * @param c      Character to draw
 * @param col    Screen position relative to viewport
 * @param row    Screen position relative to viewport
 *
 */
static void draw_char(viewport_t *vport, uint8_t c, unsigned int col, unsigned int row)
{
    /* Do not hide cursor if we are going to overwrite it */
    if ((vport->cursor_active) && (vport->cursor_shown) &&
        ((vport->cur_col != col) || (vport->cur_row != row)))
        cursor_hide(vport);
   
 
 
 
    vport->backbuf[BB_POS(vport, col, row)] = c;
    draw_glyph(vport, false, col, row);
 
   
    vport->cur_col = col;
    vport->cur_row = row;
   
    vport->cur_col++;
    if (vport->cur_col >= vport->cols) {
        vport->cur_col = 0;
        vport->cur_row++;
        if (vport->cur_row >= vport->rows)
            vport->cur_row--;
    }
   
    cursor_show(vport);
}
 
 
/** Draw text data to viewport
 *
 * @param vport Viewport id
 * @param data  Text data fitting exactly into viewport
 *
 */
static void draw_text_data(viewport_t *vport, keyfield_t *data)
{
    unsigned int i;
   
    for (i = 0; i < vport->cols * vport->rows; i++) {
        unsigned int col = i % vport->cols;
        unsigned int row = i / vport->cols;
       
        uint8_t glyph = vport->backbuf[BB_POS(vport, col, row)];
       
        // TODO: use data[i].style
       
        if (glyph != data[i].character) {
            vport->backbuf[BB_POS(vport, col, row)] = data[i].character;
            draw_glyph(vport, false, col, row);
        }
    }
    cursor_show(vport);
}
 
 
static void putpixel_pixmap(void *data, unsigned int x, unsigned int y, uint32_t color)
{
    int pm = *((int *) data);
    pixmap_t *pmap = &pixmaps[pm];
    unsigned int pos = (y * pmap->width + x) * screen.pixelbytes;
   
    screen.rgb_conv(&pmap->data[pos], color);
}
 
 
static void putpixel(void *data, unsigned int x, unsigned int y, uint32_t color)
{
    viewport_t *vport = (viewport_t *) data;
    unsigned int dx = vport->x + x;
    unsigned int dy = vport->y + y;
   
    screen.rgb_conv(&screen.fb_addr[FB_POS(dx, dy)], color);
}
 
 
/** Return first free pixmap
 *
 */
static int find_free_pixmap(void)
{
    unsigned int i;
   
    for (i = 0; i < MAX_PIXMAPS; i++)
        if (!pixmaps[i].data)
            return i;
   
    return -1;
}
 
 
/** Create a new pixmap and return appropriate ID
 *
 */
static int shm2pixmap(unsigned char *shm, size_t size)
{
    int pm;
    pixmap_t *pmap;
   
    pm = find_free_pixmap();
    if (pm == -1)
        return ELIMIT;
   
    pmap = &pixmaps[pm];
   
    if (ppm_get_data(shm, size, &pmap->width, &pmap->height))
        return EINVAL;
   
    pmap->data = malloc(pmap->width * pmap->height * screen.pixelbytes);
    if (!pmap->data)
        return ENOMEM;
   
    ppm_draw(shm, size, 0, 0, pmap->width, pmap->height, putpixel_pixmap, (void *) &pm);
   
    return pm;
}
 
 
/** Handle shared memory communication calls
 *
 * Protocol for drawing pixmaps:
 * - FB_PREPARE_SHM(client shm identification)
 * - IPC_M_AS_AREA_SEND
 * - FB_DRAW_PPM(startx, starty)
 * - FB_DROP_SHM
 *
 * Protocol for text drawing
 * - IPC_M_AS_AREA_SEND
 * - FB_DRAW_TEXT_DATA
 *
 * @param callid Callid of the current call
 * @param call   Current call data
 * @param vp     Active viewport
 *
 * @return false if the call was not handled byt this function, true otherwise
 *
 * Note: this function is not threads safe, you would have
 * to redefine static variables with __thread
 *
 */
static bool shm_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
{
    static keyfield_t *interbuffer = NULL;
    static size_t intersize = 0;
   
    static unsigned char *shm = NULL;
    static ipcarg_t shm_id = 0;
    static size_t shm_size;
   
    bool handled = true;
    int retval = EOK;
    viewport_t *vport = &viewports[vp];
    unsigned int x;
    unsigned int y;
   
    switch (IPC_GET_METHOD(*call)) {
    case IPC_M_SHARE_OUT:
        /* We accept one area for data interchange */
        if (IPC_GET_ARG1(*call) == shm_id) {
            void *dest = as_get_mappable_page(IPC_GET_ARG2(*call));
            shm_size = IPC_GET_ARG2(*call);
            if (!ipc_answer_1(callid, EOK, (sysarg_t) dest))
                shm = dest;
            else
                shm_id = 0;
           
            if (shm[0] != 'P')
                return false;
           
            return true;
        } else {
            intersize = IPC_GET_ARG2(*call);
            receive_comm_area(callid, call, (void *) &interbuffer);
        }
        return true;
    case FB_PREPARE_SHM:
        if (shm_id)
            retval = EBUSY;
        else
            shm_id = IPC_GET_ARG1(*call);
        break;
       
    case FB_DROP_SHM:
        if (shm) {
            as_area_destroy(shm);
            shm = NULL;
        }
        shm_id = 0;
        break;
       
    case FB_SHM2PIXMAP:
        if (!shm) {
            retval = EINVAL;
            break;
        }
        retval = shm2pixmap(shm, shm_size);
        break;
    case FB_DRAW_PPM:
        if (!shm) {
            retval = EINVAL;
            break;
        }
        x = IPC_GET_ARG1(*call);
        y = IPC_GET_ARG2(*call);
       
        if ((x > vport->width) || (y > vport->height)) {
            retval = EINVAL;
            break;
        }
       
        ppm_draw(shm, shm_size, IPC_GET_ARG1(*call),
            IPC_GET_ARG2(*call), vport->width - x, vport->height - y, putpixel, (void *) vport);
        break;
    case FB_DRAW_TEXT_DATA:
        if (!interbuffer) {
            retval = EINVAL;
            break;
        }
        if (intersize < vport->cols * vport->rows * sizeof(*interbuffer)) {
            retval = EINVAL;
            break;
        }
        draw_text_data(vport, interbuffer);
        break;
    default:
        handled = false;
    }
   
    if (handled)
        ipc_answer_0(callid, retval);
    return handled;
}
 
 
static void copy_vp_to_pixmap(viewport_t *vport, pixmap_t *pmap)
{
    unsigned int width = vport->width;
    unsigned int height = vport->height;
   
    if (width + vport->x > screen.xres)
        width = screen.xres - vport->x;
    if (height + vport->y > screen.yres)
        height = screen.yres - vport->y;
   
    unsigned int realwidth = pmap->width <= width ? pmap->width : width;
    unsigned int realheight = pmap->height <= height ? pmap->height : height;
   
    unsigned int srcrowsize = vport->width * screen.pixelbytes;
    unsigned int realrowsize = realwidth * screen.pixelbytes;
   
    unsigned int y;
    for (y = 0; y < realheight; y++) {
        unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
        memcpy(pmap->data + srcrowsize * y, screen.fb_addr + tmp, realrowsize);
    }
}
 
 
/** Save viewport to pixmap
 *
 */
static int save_vp_to_pixmap(viewport_t *vport)
{
    int pm;
    pixmap_t *pmap;
   
    pm = find_free_pixmap();
    if (pm == -1)
        return ELIMIT;
   
    pmap = &pixmaps[pm];
    pmap->data = malloc(screen.pixelbytes * vport->width * vport->height);
    if (!pmap->data)
        return ENOMEM;
   
    pmap->width = vport->width;
    pmap->height = vport->height;
   
    copy_vp_to_pixmap(vport, pmap);
   
    return pm;
}
 
 
/** Draw pixmap on screen
 *
 * @param vp Viewport to draw on
 * @param pm Pixmap identifier
 *
 */
static int draw_pixmap(int vp, int pm)
{
    pixmap_t *pmap = &pixmaps[pm];
    viewport_t *vport = &viewports[vp];
   
    unsigned int width = vport->width;
    unsigned int height = vport->height;
   
    if (width + vport->x > screen.xres)
        width = screen.xres - vport->x;
    if (height + vport->y > screen.yres)
        height = screen.yres - vport->y;
   
    if (!pmap->data)
        return EINVAL;
   
    unsigned int realwidth = pmap->width <= width ? pmap->width : width;
    unsigned int realheight = pmap->height <= height ? pmap->height : height;
   
    unsigned int srcrowsize = vport->width * screen.pixelbytes;
    unsigned int realrowsize = realwidth * screen.pixelbytes;
   
    unsigned int y;
    for (y = 0; y < realheight; y++) {
        unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
        memcpy(screen.fb_addr + tmp, pmap->data + y * srcrowsize, realrowsize);
    }
   
    return EOK;
}
 
 
/** Tick animation one step forward
 *
 */
static void anims_tick(void)
{
    unsigned int i;
    static int counts = 0;
   
    /* Limit redrawing */
    counts = (counts + 1) % 8;
    if (counts)
        return;
 
    for (i = 0; i < MAX_ANIMATIONS; i++) {
        if ((!animations[i].animlen) || (!animations[i].initialized) ||
            (!animations[i].enabled))
            continue;
       
        draw_pixmap(animations[i].vp, animations[i].pixmaps[animations[i].pos]);
        animations[i].pos = (animations[i].pos + 1) % animations[i].animlen;
    }
}
 
 
static unsigned int pointer_x;
static unsigned int pointer_y;
static bool pointer_shown, pointer_enabled;
static int pointer_vport = -1;
static int pointer_pixmap = -1;
 
 
static void mouse_show(void)
{
    int i, j;
    int visibility;
    int color;
    int bytepos;
   
    if ((pointer_shown) || (!pointer_enabled))
        return;
   
    /* Save image under the cursor */
    if (pointer_vport == -1) {
        pointer_vport = vport_create(pointer_x, pointer_y, pointer_width, pointer_height);
        if (pointer_vport < 0)
            return;
    } else {
        viewports[pointer_vport].x = pointer_x;
        viewports[pointer_vport].y = pointer_y;
    }
   
    if (pointer_pixmap == -1)
        pointer_pixmap = save_vp_to_pixmap(&viewports[pointer_vport]);
    else
        copy_vp_to_pixmap(&viewports[pointer_vport], &pixmaps[pointer_pixmap]);
   
    /* Draw cursor */
    for (i = 0; i < pointer_height; i++)
        for (j = 0; j < pointer_width; j++) {
            bytepos = i * ((pointer_width - 1) / 8 + 1) + j / 8;
            visibility = pointer_mask_bits[bytepos] &
                (1 << (j % 8));
            if (visibility) {
                color = pointer_bits[bytepos] &
                    (1 << (j % 8)) ? 0 : 0xffffff;
                if (pointer_x + j < screen.xres && pointer_y +
                    i < screen.yres)
                    putpixel(&viewports[0], pointer_x + j,
                        pointer_y + i, color);
            }
        }
    pointer_shown = 1;
}
 
 
static void mouse_hide(void)
{
    /* Restore image under the cursor */
    if (pointer_shown) {
        draw_pixmap(pointer_vport, pointer_pixmap);
        pointer_shown = 0;
    }
}
 
 
static void mouse_move(unsigned int x, unsigned int y)
{
    mouse_hide();
    pointer_x = x;
    pointer_y = y;
    mouse_show();
}
 
 
static int anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
{
    bool handled = true;
    int retval = EOK;
    int i, nvp;
    int newval;
   
    switch (IPC_GET_METHOD(*call)) {
    case FB_ANIM_CREATE:
        nvp = IPC_GET_ARG1(*call);
        if (nvp == -1)
            nvp = vp;
        if (nvp >= MAX_VIEWPORTS || nvp < 0 ||
            !viewports[nvp].initialized) {
            retval = EINVAL;
            break;
        }
        for (i = 0; i < MAX_ANIMATIONS; i++) {
            if (!animations[i].initialized)
                break;
        }
        if (i == MAX_ANIMATIONS) {
            retval = ELIMIT;
            break;
        }
        animations[i].initialized = 1;
        animations[i].animlen = 0;
        animations[i].pos = 0;
        animations[i].enabled = 0;
        animations[i].vp = nvp;
        retval = i;
        break;
    case FB_ANIM_DROP:
        i = IPC_GET_ARG1(*call);
        if (i >= MAX_ANIMATIONS || i < 0) {
            retval = EINVAL;
            break;
        }
        animations[i].initialized = 0;
        break;
    case FB_ANIM_ADDPIXMAP:
        i = IPC_GET_ARG1(*call);
        if (i >= MAX_ANIMATIONS || i < 0 ||
            !animations[i].initialized) {
            retval = EINVAL;
            break;
        }
        if (animations[i].animlen == MAX_ANIM_LEN) {
            retval = ELIMIT;
            break;
        }
        newval = IPC_GET_ARG2(*call);
        if (newval < 0 || newval > MAX_PIXMAPS ||
            !pixmaps[newval].data) {
            retval = EINVAL;
            break;
        }
        animations[i].pixmaps[animations[i].animlen++] = newval;
        break;
    case FB_ANIM_CHGVP:
        i = IPC_GET_ARG1(*call);
        if (i >= MAX_ANIMATIONS || i < 0) {
            retval = EINVAL;
            break;
        }
        nvp = IPC_GET_ARG2(*call);
        if (nvp == -1)
            nvp = vp;
        if (nvp >= MAX_VIEWPORTS || nvp < 0 ||
            !viewports[nvp].initialized) {
            retval = EINVAL;
            break;
        }
        animations[i].vp = nvp;
        break;
    case FB_ANIM_START:
    case FB_ANIM_STOP:
        i = IPC_GET_ARG1(*call);
        if (i >= MAX_ANIMATIONS || i < 0) {
            retval = EINVAL;
            break;
        }
        newval = (IPC_GET_METHOD(*call) == FB_ANIM_START);
        if (newval ^ animations[i].enabled) {
            animations[i].enabled = newval;
            anims_enabled += newval ? 1 : -1;
        }
        break;
    default:
        handled = 0;
    }
    if (handled)
        ipc_answer_0(callid, retval);
    return handled;
}
 
 
/** Handler for messages concerning pixmap handling
 *
 */
static int pixmap_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
{
    bool handled = true;
    int retval = EOK;
    int i, nvp;
   
    switch (IPC_GET_METHOD(*call)) {
    case FB_VP_DRAW_PIXMAP:
        nvp = IPC_GET_ARG1(*call);
        if (nvp == -1)
            nvp = vp;
        if (nvp < 0 || nvp >= MAX_VIEWPORTS ||
            !viewports[nvp].initialized) {
            retval = EINVAL;
            break;
        }
        i = IPC_GET_ARG2(*call);
        retval = draw_pixmap(nvp, i);
        break;
    case FB_VP2PIXMAP:
        nvp = IPC_GET_ARG1(*call);
        if (nvp == -1)
            nvp = vp;
        if (nvp < 0 || nvp >= MAX_VIEWPORTS ||
            !viewports[nvp].initialized)
            retval = EINVAL;
        else
            retval = save_vp_to_pixmap(&viewports[nvp]);
        break;
    case FB_DROP_PIXMAP:
        i = IPC_GET_ARG1(*call);
        if (i >= MAX_PIXMAPS) {
            retval = EINVAL;
            break;
        }
        if (pixmaps[i].data) {
            free(pixmaps[i].data);
            pixmaps[i].data = NULL;
        }
        break;
    default:
        handled = 0;
    }
   
    if (handled)
        ipc_answer_0(callid, retval);
    return handled;
   
}
 
/** Function for handling connections to FB
 *
 */
static void fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
{
    unsigned int vp = 0;
    viewport_t *vport = &viewports[vp];
   
    if (client_connected) {
        ipc_answer_0(iid, ELIMIT);
        return;
    }
   
    /* Accept connection */
    client_connected = true;
    ipc_answer_0(iid, EOK);
   
    while (true) {
        ipc_callid_t callid;
        ipc_call_t call;
        int retval;
        unsigned int i;
        int scroll;
        uint8_t glyph;
        unsigned int row, col;
       
        if ((vport->cursor_active) || (anims_enabled))
            callid = async_get_call_timeout(&call, 250000);
        else
            callid = async_get_call(&call);
       
        mouse_hide();
        if (!callid) {
            cursor_blink(vport);
            anims_tick();
            mouse_show();
            continue;
        }
       
        if (shm_handle(callid, &call, vp))
            continue;
       
        if (pixmap_handle(callid, &call, vp))
            continue;
       
        if (anim_handle(callid, &call, vp))
            continue;
       
        switch (IPC_GET_METHOD(call)) {
        case IPC_M_PHONE_HUNGUP:
            client_connected = false;
           
            /* Cleanup other viewports */
            for (i = 1; i < MAX_VIEWPORTS; i++)
                vport->initialized = false;
           
            /* Exit thread */
            return;
       
        case FB_PUTCHAR:
            glyph = IPC_GET_ARG1(call);
            row = IPC_GET_ARG2(call);
            col = IPC_GET_ARG3(call);
           
            if ((col >= vport->cols) || (row >= vport->rows)) {
                retval = EINVAL;
                break;
            }
            ipc_answer_0(callid, EOK);
           
            draw_char(vport, glyph, col, row);
           
            /* Message already answered */
            continue;
        case FB_CLEAR:
            vport_clear(vport);
            cursor_show(vport);
            retval = EOK;
            break;
        case FB_CURSOR_GOTO:
            row = IPC_GET_ARG1(call);
            col = IPC_GET_ARG2(call);
           
            if ((col >= vport->cols) || (row >= vport->rows)) {
                retval = EINVAL;
                break;
            }
            retval = EOK;
           
            cursor_hide(vport);
            vport->cur_col = col;
            vport->cur_row = row;
            cursor_show(vport);
            break;
        case FB_CURSOR_VISIBILITY:
            cursor_hide(vport);
            vport->cursor_active = IPC_GET_ARG1(call);
            cursor_show(vport);
            retval = EOK;
            break;
        case FB_GET_CSIZE:
            ipc_answer_2(callid, EOK, vport->rows, vport->cols);
            continue;
        case FB_SCROLL:
            scroll = IPC_GET_ARG1(call);
            if ((scroll > (int) vport->rows) || (scroll < (-(int) vport->rows))) {
                retval = EINVAL;
                break;
            }
            cursor_hide(vport);
            vport_scroll(vport, scroll);
            cursor_show(vport);
            retval = EOK;
            break;
        case FB_VIEWPORT_SWITCH:
            i = IPC_GET_ARG1(call);
            if (i >= MAX_VIEWPORTS) {
                retval = EINVAL;
                break;
            }
            if (!viewports[i].initialized) {
                retval = EADDRNOTAVAIL;
                break;
            }
            cursor_hide(vport);
            vp = i;
            vport = &viewports[vp];
            cursor_show(vport);
            retval = EOK;
            break;
        case FB_VIEWPORT_CREATE:
            retval = vport_create(IPC_GET_ARG1(call) >> 16,
                IPC_GET_ARG1(call) & 0xffff,
                IPC_GET_ARG2(call) >> 16,
                IPC_GET_ARG2(call) & 0xffff);
            break;
        case FB_VIEWPORT_DELETE:
            i = IPC_GET_ARG1(call);
            if (i >= MAX_VIEWPORTS) {
                retval = EINVAL;
                break;
            }
            if (!viewports[i].initialized) {
                retval = EADDRNOTAVAIL;
                break;
            }
            viewports[i].initialized = false;
            if (viewports[i].glyphs)
                free(viewports[i].glyphs);
            if (viewports[i].bgpixel)
                free(viewports[i].bgpixel);
            if (viewports[i].backbuf)
                free(viewports[i].backbuf);
            retval = EOK;
            break;
        case FB_SET_STYLE:
            vport->style.fg_color = IPC_GET_ARG1(call);
            vport->style.bg_color = IPC_GET_ARG2(call);
            render_glyphs(vport);
            retval = EOK;
            break;
        case FB_GET_RESOLUTION:
            ipc_answer_2(callid, EOK, screen.xres, screen.yres);
            continue;
        case FB_POINTER_MOVE:
            pointer_enabled = true;
            mouse_move(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
            retval = EOK;
            break;
        default:
            retval = ENOENT;
        }
        ipc_answer_0(callid, retval);
    }
}
 
/** Initialization of framebuffer
 *
 */
int fb_init(void)
{
    async_set_client_connection(fb_client_connection);
   
    void *fb_ph_addr = (void *) sysinfo_value("fb.address.physical");
    unsigned int fb_offset = sysinfo_value("fb.offset");
    unsigned int fb_width = sysinfo_value("fb.width");
    unsigned int fb_height = sysinfo_value("fb.height");
    unsigned int fb_scanline = sysinfo_value("fb.scanline");
    unsigned int fb_visual = sysinfo_value("fb.visual");
   
    unsigned int fbsize = fb_scanline * fb_height;
    void *fb_addr = as_get_mappable_page(fbsize);
   
    physmem_map(fb_ph_addr + fb_offset, fb_addr,
        ALIGN_UP(fbsize, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE);
   
    if (screen_init(fb_addr, fb_width, fb_height, fb_scanline, fb_visual))
        return 0;
   
    return -1;
}
 
/**
 * @}
 */
 

Rev 3710	Rev 3715
1	/*	1	/*
2	* Copyright (c) 2008 Martin Decky	2	* Copyright (c) 2008 Martin Decky
3	* Copyright (c) 2006 Jakub Vana	3	* Copyright (c) 2006 Jakub Vana
4	* Copyright (c) 2006 Ondrej Palkovsky	4	* Copyright (c) 2006 Ondrej Palkovsky
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
8	* modification, are permitted provided that the following conditions	8	* modification, are permitted provided that the following conditions
9	* are met:	9	* are met:
10	*	10	*
11	* - Redistributions of source code must retain the above copyright	11	* - Redistributions of source code must retain the above copyright
12	* notice, this list of conditions and the following disclaimer.	12	* notice, this list of conditions and the following disclaimer.
13	* - Redistributions in binary form must reproduce the above copyright	13	* - Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	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	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.	17	* derived from this software without specific prior written permission.
18	*	18	*
19	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	20	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	21	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	22	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	23	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	25	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	28	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29	*/	29	*/
30		30
31	/**	31	/**
32	* @defgroup fb Graphical framebuffer	32	* @defgroup fb Graphical framebuffer
33	* @brief HelenOS graphical framebuffer.	33	* @brief HelenOS graphical framebuffer.
34	* @ingroup fbs	34	* @ingroup fbs
35	* @{	35	* @{
36	*/	36	*/
37		37
38	/** @file	38	/** @file
39	*/	39	*/
40		40
41	#include <stdlib.h>	41	#include <stdlib.h>
42	#include <unistd.h>	42	#include <unistd.h>
43	#include <string.h>	43	#include <string.h>
44	#include <ddi.h>	44	#include <ddi.h>
45	#include <sysinfo.h>	45	#include <sysinfo.h>
46	#include <align.h>	46	#include <align.h>
47	#include <as.h>	47	#include <as.h>
48	#include <ipc/fb.h>	48	#include <ipc/fb.h>
49	#include <ipc/ipc.h>	49	#include <ipc/ipc.h>
50	#include <ipc/ns.h>	50	#include <ipc/ns.h>
51	#include <ipc/services.h>	51	#include <ipc/services.h>
52	#include <kernel/errno.h>	52	#include <kernel/errno.h>
53	#include <kernel/genarch/fb/visuals.h>	53	#include <kernel/genarch/fb/visuals.h>
54	#include <async.h>	54	#include <async.h>
55	#include <bool.h>	55	#include <bool.h>
56		56
57	#include "font-8x16.h"	57	#include "font-8x16.h"
58	#include "fb.h"	58	#include "fb.h"
59	#include "main.h"	59	#include "main.h"
60	#include "../console/screenbuffer.h"	60	#include "../console/screenbuffer.h"
61	#include "ppm.h"	61	#include "ppm.h"
62		62
63	#include "pointer.xbm"	63	#include "pointer.xbm"
64	#include "pointer_mask.xbm"	64	#include "pointer_mask.xbm"
65		65
66	#define DEFAULT_BGCOLOR 0xf0f0f0	66	#define DEFAULT_BGCOLOR 0xf0f0f0
67	#define DEFAULT_FGCOLOR 0x000000	67	#define DEFAULT_FGCOLOR 0x000000
68		68
69	#define MAX_ANIM_LEN 8	69	#define MAX_ANIM_LEN 8
70	#define MAX_ANIMATIONS 4	70	#define MAX_ANIMATIONS 4
71	#define MAX_PIXMAPS 256 /*< Maximum number of saved pixmaps /	71	#define MAX_PIXMAPS 256 /*< Maximum number of saved pixmaps /
72	#define MAX_VIEWPORTS 128 /*< Viewport is a rectangular area on the screen /	72	#define MAX_VIEWPORTS 128 /*< Viewport is a rectangular area on the screen /
73		73
74	typedef void (rgb_conv_t)(void , uint32_t);	74	typedef void (rgb_conv_t)(void , uint32_t);
75		75
76	struct {	76	struct {
77	uint8_t *fb_addr;	77	uint8_t *fb_addr;
78		78
79	unsigned int xres;	79	unsigned int xres;
80	unsigned int yres;	80	unsigned int yres;
81		81
82	unsigned int scanline;	82	unsigned int scanline;
83	unsigned int glyphscanline;	83	unsigned int glyphscanline;
84		84
85	unsigned int pixelbytes;	85	unsigned int pixelbytes;
86	unsigned int glyphbytes;	86	unsigned int glyphbytes;
87		87
88	rgb_conv_t rgb_conv;	88	rgb_conv_t rgb_conv;
89	} screen;	89	} screen;
90		90
91	typedef struct {	91	typedef struct {
92	bool initialized;	92	bool initialized;
93	unsigned int x;	93	unsigned int x;
94	unsigned int y;	94	unsigned int y;
95	unsigned int width;	95	unsigned int width;
96	unsigned int height;	96	unsigned int height;
97		97
98	/* Text support in window */	98	/* Text support in window */
99	unsigned int cols;	99	unsigned int cols;
100	unsigned int rows;	100	unsigned int rows;
101		101
102	/* Style and glyphs for text printing */	102	/* Style and glyphs for text printing */
103	style_t style;	103	style_t style;
104	uint8_t *glyphs;	104	uint8_t *glyphs;
105	uint8_t *bgpixel;	105	uint8_t *bgpixel;
106		106
107	/* Auto-cursor position */	107	/* Auto-cursor position */
108	bool cursor_active;	108	bool cursor_active;
109	unsigned int cur_col;	109	unsigned int cur_col;
110	unsigned int cur_row;	110	unsigned int cur_row;
111	bool cursor_shown;	111	bool cursor_shown;
112		112
113	/* Back buffer */	113	/* Back buffer */
114	unsigned int bbsize;	114	unsigned int bbsize;
115	uint8_t *backbuf;	115	uint8_t *backbuf;
116	} viewport_t;	116	} viewport_t;
117		117
118	typedef struct {	118	typedef struct {
119	bool initialized;	119	bool initialized;
120	bool enabled;	120	bool enabled;
121	unsigned int vp;	121	unsigned int vp;
122		122
123	unsigned int pos;	123	unsigned int pos;
124	unsigned int animlen;	124	unsigned int animlen;
125	unsigned int pixmaps[MAX_ANIM_LEN];	125	unsigned int pixmaps[MAX_ANIM_LEN];
126	} animation_t;	126	} animation_t;
127		127
128	static animation_t animations[MAX_ANIMATIONS];	128	static animation_t animations[MAX_ANIMATIONS];
129	static bool anims_enabled;	129	static bool anims_enabled;
130		130
131	typedef struct {	131	typedef struct {
132	unsigned int width;	132	unsigned int width;
133	unsigned int height;	133	unsigned int height;
134	uint8_t *data;	134	uint8_t *data;
135	} pixmap_t;	135	} pixmap_t;
136		136
137	static pixmap_t pixmaps[MAX_PIXMAPS];	137	static pixmap_t pixmaps[MAX_PIXMAPS];
138	static viewport_t viewports[128];	138	static viewport_t viewports[128];
139		139
140	static bool client_connected = false; /*< Allow only 1 connection /	140	static bool client_connected = false; /*< Allow only 1 connection /
141		141
142	#define RED(x, bits) ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))	142	#define RED(x, bits) ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
143	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))	143	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
144	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))	144	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
145		145
146	#define COL2X(col) ((col) * FONT_WIDTH)	146	#define COL2X(col) ((col) * FONT_WIDTH)
147	#define ROW2Y(row) ((row) * FONT_SCANLINES)	147	#define ROW2Y(row) ((row) * FONT_SCANLINES)
148		148
149	#define X2COL(x) ((x) / FONT_WIDTH)	149	#define X2COL(x) ((x) / FONT_WIDTH)
150	#define Y2ROW(y) ((y) / FONT_SCANLINES)	150	#define Y2ROW(y) ((y) / FONT_SCANLINES)
151		151
152	#define FB_POS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)	152	#define FB_POS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)
153	#define BB_POS(vport, col, row) ((row) * vport->cols + (col))	153	#define BB_POS(vport, col, row) ((row) * vport->cols + (col))
154	#define GLYPH_POS(glyph, y, cursor) (((glyph) + (cursor) * FONT_GLYPHS) * screen.glyphbytes + (y) * screen.glyphscanline)	154	#define GLYPH_POS(glyph, y, cursor) (((glyph) + (cursor) * FONT_GLYPHS) * screen.glyphbytes + (y) * screen.glyphscanline)
155		155
156		156
157	/** ARGB 8:8:8:8 conversion	157	/** ARGB 8:8:8:8 conversion
158	*	158	*
159	*/	159	*/
160	static void rgb_0888(void *dst, uint32_t rgb)	160	static void rgb_0888(void *dst, uint32_t rgb)
161	{	161	{
162	((uint32_t ) dst) = rgb & 0xffffff;	162	((uint32_t ) dst) = rgb & 0xffffff;
163	}	163	}
164		164
165		165
166	/** ABGR 8:8:8:8 conversion	166	/** ABGR 8:8:8:8 conversion
167	*	167	*
168	*/	168	*/
169	static void bgr_0888(void *dst, uint32_t rgb)	169	static void bgr_0888(void *dst, uint32_t rgb)
170	{	170	{
171	((uint32_t ) dst)	171	((uint32_t ) dst)
172	= (BLUE(rgb, 8) << 16) \| (GREEN(rgb, 8) << 8) \| RED(rgb, 8);	172	= (BLUE(rgb, 8) << 16) \| (GREEN(rgb, 8) << 8) \| RED(rgb, 8);
173	}	173	}
174		174
175		175
176	/** BGR 8:8:8 conversion	176	/** BGR 8:8:8 conversion
177	*	177	*
178	*/	178	*/
179	static void rgb_888(void *dst, uint32_t rgb)	179	static void rgb_888(void *dst, uint32_t rgb)
180	{	180	{
181	#if defined(FB_INVERT_ENDIAN)	181	#if defined(FB_INVERT_ENDIAN)
182	((uint8_t *) dst)[0] = RED(rgb, 8);	182	((uint8_t *) dst)[0] = RED(rgb, 8);
183	((uint8_t *) dst)[1] = GREEN(rgb, 8);	183	((uint8_t *) dst)[1] = GREEN(rgb, 8);
184	((uint8_t *) dst)[2] = BLUE(rgb, 8);	184	((uint8_t *) dst)[2] = BLUE(rgb, 8);
185	#else	185	#else
186	((uint8_t *) dst)[0] = BLUE(rgb, 8);	186	((uint8_t *) dst)[0] = BLUE(rgb, 8);
187	((uint8_t *) dst)[1] = GREEN(rgb, 8);	187	((uint8_t *) dst)[1] = GREEN(rgb, 8);
188	((uint8_t *) dst)[2] = RED(rgb, 8);	188	((uint8_t *) dst)[2] = RED(rgb, 8);
189	#endif	189	#endif
190	}	190	}
191		191
192		192
193	/** RGB 5:5:5 conversion	193	/** RGB 5:5:5 conversion
194	*	194	*
195	*/	195	*/
196	static void rgb_555(void *dst, uint32_t rgb)	196	static void rgb_555(void *dst, uint32_t rgb)
197	{	197	{
198	((uint16_t ) dst)	198	((uint16_t ) dst)
199	= (RED(rgb, 5) << 10) \| (GREEN(rgb, 5) << 5) \| BLUE(rgb, 5);	199	= (RED(rgb, 5) << 10) \| (GREEN(rgb, 5) << 5) \| BLUE(rgb, 5);
200	}	200	}
201		201
202		202
203	/** RGB 5:6:5 conversion	203	/** RGB 5:6:5 conversion
204	*	204	*
205	*/	205	*/
206	static void rgb_565(void *dst, uint32_t rgb)	206	static void rgb_565(void *dst, uint32_t rgb)
207	{	207	{
208	((uint16_t ) dst)	208	((uint16_t ) dst)
209	= (RED(rgb, 5) << 11) \| (GREEN(rgb, 6) << 5) \| BLUE(rgb, 5);	209	= (RED(rgb, 5) << 11) \| (GREEN(rgb, 6) << 5) \| BLUE(rgb, 5);
210	}	210	}
211		211
212		212
213	/** RGB 3:2:3	213	/** RGB 3:2:3
214	*	214	*
215	*/	215	*/
216	static void rgb_323(void *dst, uint32_t rgb)	216	static void rgb_323(void *dst, uint32_t rgb)
217	{	217	{
218	((uint8_t ) dst)	218	((uint8_t ) dst)
219	= ~((RED(rgb, 3) << 5) \| (GREEN(rgb, 2) << 3) \| BLUE(rgb, 3));	219	= ~((RED(rgb, 3) << 5) \| (GREEN(rgb, 2) << 3) \| BLUE(rgb, 3));
220	}	220	}
221		221
222		222
223	/** Redraw viewport	223	/** Redraw viewport
224	*	224	*
225	* @param vport Viewport to redraw	225	* @param vport Viewport to redraw
226	*	226	*
227	*/	227	*/
228	static void vport_redraw(viewport_t *vport)	228	static void vport_redraw(viewport_t *vport)
229	{	229	{
230	unsigned int row;	230	unsigned int row;
231		231
232	for (row = 0; row < vport->rows; row++) {	232	for (row = 0; row < vport->rows; row++) {
233	unsigned int y = vport->y + ROW2Y(row);	233	unsigned int y = vport->y + ROW2Y(row);
234	unsigned int yd;	234	unsigned int yd;
235		235
236	for (yd = 0; yd < FONT_SCANLINES; yd++) {	236	for (yd = 0; yd < FONT_SCANLINES; yd++) {
237	unsigned int x;	237	unsigned int x;
238	unsigned int col;	238	unsigned int col;
239		239
240	for (col = 0, x = vport->x; col < vport->cols; col++, x += FONT_WIDTH)	240	for (col = 0, x = vport->x; col < vport->cols; col++, x += FONT_WIDTH)
241	memcpy(&screen.fb_addr[FB_POS(x, y + yd)],	241	memcpy(&screen.fb_addr[FB_POS(x, y + yd)],
242	&vport->glyphs[GLYPH_POS(vport->backbuf[BB_POS(vport, col, row)], yd, false)],	242	&vport->glyphs[GLYPH_POS(vport->backbuf[BB_POS(vport, col, row)], yd, false)],
243	screen.glyphscanline);	243	screen.glyphscanline);
244	}	244	}
245	}	245	}
246		246
247	if (COL2X(vport->cols) < vport->width) {	247	if (COL2X(vport->cols) < vport->width) {
248	unsigned int y;	248	unsigned int y;
249		249
250	for (y = 0; y < vport->height; y++) {	250	for (y = 0; y < vport->height; y++) {
251	unsigned int x;	251	unsigned int x;
252		252
253	for (x = COL2X(vport->cols); x < vport->width; x++)	253	for (x = COL2X(vport->cols); x < vport->width; x++)
254	memcpy(&screen.fb_addr[FB_POS(x, y)], vport->bgpixel, screen.pixelbytes);	254	memcpy(&screen.fb_addr[FB_POS(x, y)], vport->bgpixel, screen.pixelbytes);
255	}	255	}
256	}	256	}
257		257
258	if (ROW2Y(vport->rows) < vport->height) {	258	if (ROW2Y(vport->rows) < vport->height) {
259	unsigned int y;	259	unsigned int y;
260		260
261	for (y = ROW2Y(vport->rows); y < vport->height; y++) {	261	for (y = ROW2Y(vport->rows); y < vport->height; y++) {
262	unsigned int x;	262	unsigned int x;
263		263
264	for (x = 0; x < vport->width; x++)	264	for (x = 0; x < vport->width; x++)
265	memcpy(&screen.fb_addr[FB_POS(x, y)], vport->bgpixel, screen.pixelbytes);	265	memcpy(&screen.fb_addr[FB_POS(x, y)], vport->bgpixel, screen.pixelbytes);
266	}	266	}
267	}	267	}
268	}	268	}
269		269
270		270
271	/** Clear viewport	271	/** Clear viewport
272	*	272	*
273	* @param vport Viewport to clear	273	* @param vport Viewport to clear
274	*	274	*
275	*/	275	*/
276	static void vport_clear(viewport_t *vport)	276	static void vport_clear(viewport_t *vport)
277	{	277	{
278	memset(vport->backbuf, 0, vport->bbsize);	278	memset(vport->backbuf, 0, vport->bbsize);
279	vport_redraw(vport);	279	vport_redraw(vport);
280	}	280	}
281		281
282		282
283	/** Scroll viewport by given number of lines	283	/** Scroll viewport by given number of lines
284	*	284	*
285	* @param vport Viewport to scroll	285	* @param vport Viewport to scroll
286	* @param lines Number of lines to scroll	286	* @param lines Number of lines to scroll
287	*	287	*
288	*/	288	*/
289	static void vport_scroll(viewport_t *vport, int lines)	289	static void vport_scroll(viewport_t *vport, int lines)
290	{	290	{
291	unsigned int row;	291	unsigned int row;
292		292
293	for (row = 0; row < vport->rows; row++) {	293	for (row = 0; row < vport->rows; row++) {
294	unsigned int y = vport->y + ROW2Y(row);	294	unsigned int y = vport->y + ROW2Y(row);
295	unsigned int yd;	295	unsigned int yd;
296		296
297	for (yd = 0; yd < FONT_SCANLINES; yd++) {	297	for (yd = 0; yd < FONT_SCANLINES; yd++) {
298	unsigned int x;	298	unsigned int x;
299	unsigned int col;	299	unsigned int col;
300		300
301	for (col = 0, x = vport->x; col < vport->cols; col++, x += FONT_WIDTH) {	301	for (col = 0, x = vport->x; col < vport->cols; col++, x += FONT_WIDTH) {
302	uint8_t glyph;	302	uint8_t glyph;
303		303
304	if ((row + lines >= 0) && (row + lines < vport->rows)) {	304	if ((row + lines >= 0) && (row + lines < vport->rows)) {
305	if (vport->backbuf[BB_POS(vport, col, row)] == vport->backbuf[BB_POS(vport, col, row + lines)])	305	if (vport->backbuf[BB_POS(vport, col, row)] == vport->backbuf[BB_POS(vport, col, row + lines)])
306	continue;	306	continue;
307		307
308	glyph = vport->backbuf[BB_POS(vport, col, row + lines)];	308	glyph = vport->backbuf[BB_POS(vport, col, row + lines)];
309	} else	309	} else
310	glyph = 0;	310	glyph = 0;
311		311
312	memcpy(&screen.fb_addr[FB_POS(x, y + yd)],	312	memcpy(&screen.fb_addr[FB_POS(x, y + yd)],
313	&vport->glyphs[GLYPH_POS(glyph, yd, false)], screen.glyphscanline);	313	&vport->glyphs[GLYPH_POS(glyph, yd, false)], screen.glyphscanline);
314	}	314	}
315	}	315	}
316	}	316	}
317		317
318	if (lines > 0) {	318	if (lines > 0) {
319	memcpy(vport->backbuf, vport->backbuf + vport->cols * lines, vport->cols * (vport->rows - lines));	319	memcpy(vport->backbuf, vport->backbuf + vport->cols * lines, vport->cols * (vport->rows - lines));
320	memset(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)], 0, vport->cols * lines);	320	memset(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)], 0, vport->cols * lines);
321	} else {	321	} else {
322	memcpy(vport->backbuf - vport->cols * lines, vport->backbuf, vport->cols * (vport->rows + lines));	322	memcpy(vport->backbuf - vport->cols * lines, vport->backbuf, vport->cols * (vport->rows + lines));
323	memset(vport->backbuf, 0, - vport->cols * lines);	323	memset(vport->backbuf, 0, - vport->cols * lines);
324	}	324	}
325	}	325	}
326		326
327		327
328	/** Render glyphs	328	/** Render glyphs
329	*	329	*
330	* Convert glyphs from device independent font	330	* Convert glyphs from device independent font
331	* description to current visual representation.	331	* description to current visual representation.
332	*	332	*
333	* @param vport Viewport	333	* @param vport Viewport
334	*	334	*
335	*/	335	*/
336	static void render_glyphs(viewport_t* vport)	336	static void render_glyphs(viewport_t* vport)
337	{	337	{
338	unsigned int glyph;	338	unsigned int glyph;
339		339
340	for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {	340	for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
341	unsigned int y;	341	unsigned int y;
342		342
343	for (y = 0; y < FONT_SCANLINES; y++) {	343	for (y = 0; y < FONT_SCANLINES; y++) {
344	unsigned int x;	344	unsigned int x;
345		345
346	for (x = 0; x < FONT_WIDTH; x++) {	346	for (x = 0; x < FONT_WIDTH; x++) {
347	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, false) + x * screen.pixelbytes],	347	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, false) + x * screen.pixelbytes],
348	(fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))	348	(fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))
349	? vport->style.fg_color : vport->style.bg_color);	349	? vport->style.fg_color : vport->style.bg_color);
350		350
351	uint32_t curcolor;	351	uint32_t curcolor;
352		352
353	if (y < FONT_SCANLINES - 2)	353	if (y < FONT_SCANLINES - 2)
354	curcolor =	354	curcolor =
355	(fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))	355	(fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))
356	? vport->style.fg_color : vport->style.bg_color;	356	? vport->style.fg_color : vport->style.bg_color;
357	else	357	else
358	curcolor = vport->style.fg_color;	358	curcolor = vport->style.fg_color;
359		359
360	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes], curcolor);	360	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes], curcolor);
361	}	361	}
362	}	362	}
363	}	363	}
364		364
365	screen.rgb_conv(vport->bgpixel, vport->style.bg_color);	365	screen.rgb_conv(vport->bgpixel, vport->style.bg_color);
366	}	366	}
367		367
368		368
369	/** Create new viewport	369	/** Create new viewport
370	*	370	*
371	* @param x Origin of the viewport (x).	371	* @param x Origin of the viewport (x).
372	* @param y Origin of the viewport (y).	372	* @param y Origin of the viewport (y).
373	* @param width Width of the viewport.	373	* @param width Width of the viewport.
374	* @param height Height of the viewport.	374	* @param height Height of the viewport.
375	*	375	*
376	* @return New viewport number.	376	* @return New viewport number.
377	*	377	*
378	*/	378	*/
379	static int vport_create(unsigned int x, unsigned int y,	379	static int vport_create(unsigned int x, unsigned int y,
380	unsigned int width, unsigned int height)	380	unsigned int width, unsigned int height)
381	{	381	{
382	unsigned int i;	382	unsigned int i;
383		383
384	for (i = 0; i < MAX_VIEWPORTS; i++) {	384	for (i = 0; i < MAX_VIEWPORTS; i++) {
385	if (!viewports[i].initialized)	385	if (!viewports[i].initialized)
386	break;	386	break;
387	}	387	}
388	if (i == MAX_VIEWPORTS)	388	if (i == MAX_VIEWPORTS)
389	return ELIMIT;	389	return ELIMIT;
390		390
391	unsigned int cols = width / FONT_WIDTH;	391	unsigned int cols = width / FONT_WIDTH;
392	unsigned int rows = height / FONT_SCANLINES;	392	unsigned int rows = height / FONT_SCANLINES;
393	unsigned int bbsize = cols * rows;	393	unsigned int bbsize = cols * rows;
394	unsigned int glyphsize = 2 * FONT_GLYPHS * screen.glyphbytes;	394	unsigned int glyphsize = 2 * FONT_GLYPHS * screen.glyphbytes;
395		395
396	uint8_t backbuf = (uint8_t ) malloc(bbsize);	396	uint8_t backbuf = (uint8_t ) malloc(bbsize);
397	if (!backbuf)	397	if (!backbuf)
398	return ENOMEM;	398	return ENOMEM;
399		399
400	uint8_t glyphs = (uint8_t ) malloc(glyphsize);	400	uint8_t glyphs = (uint8_t ) malloc(glyphsize);
401	if (!glyphs) {	401	if (!glyphs) {
402	free(backbuf);	402	free(backbuf);
403	return ENOMEM;	403	return ENOMEM;
404	}	404	}
405		405
406	uint8_t bgpixel = (uint8_t ) malloc(screen.pixelbytes);	406	uint8_t bgpixel = (uint8_t ) malloc(screen.pixelbytes);
407	if (!bgpixel) {	407	if (!bgpixel) {
408	free(glyphs);	408	free(glyphs);
409	free(backbuf);	409	free(backbuf);
410	return ENOMEM;	410	return ENOMEM;
411	}	411	}
412		412
413	memset(backbuf, 0, bbsize);	413	memset(backbuf, 0, bbsize);
414	memset(glyphs, 0, glyphsize);	414	memset(glyphs, 0, glyphsize);
415	memset(bgpixel, 0, screen.pixelbytes);	415	memset(bgpixel, 0, screen.pixelbytes);
416		416
417	viewports[i].x = x;	417	viewports[i].x = x;
418	viewports[i].y = y;	418	viewports[i].y = y;
419	viewports[i].width = width;	419	viewports[i].width = width;
420	viewports[i].height = height;	420	viewports[i].height = height;
421		421
422	viewports[i].cols = cols;	422	viewports[i].cols = cols;
423	viewports[i].rows = rows;	423	viewports[i].rows = rows;
424		424
425	viewports[i].style.bg_color = DEFAULT_BGCOLOR;	425	viewports[i].style.bg_color = DEFAULT_BGCOLOR;
426	viewports[i].style.fg_color = DEFAULT_FGCOLOR;	426	viewports[i].style.fg_color = DEFAULT_FGCOLOR;
427		427
428	viewports[i].glyphs = glyphs;	428	viewports[i].glyphs = glyphs;
429	viewports[i].bgpixel = bgpixel;	429	viewports[i].bgpixel = bgpixel;
430		430
431	viewports[i].cur_col = 0;	431	viewports[i].cur_col = 0;
432	viewports[i].cur_row = 0;	432	viewports[i].cur_row = 0;
433	viewports[i].cursor_active = false;	433	viewports[i].cursor_active = false;
434	viewports[i].cursor_shown = false;	434	viewports[i].cursor_shown = false;
435		435
436	viewports[i].bbsize = bbsize;	436	viewports[i].bbsize = bbsize;
437	viewports[i].backbuf = backbuf;	437	viewports[i].backbuf = backbuf;
438		438
439	viewports[i].initialized = true;	439	viewports[i].initialized = true;
440		440
441	render_glyphs(&viewports[i]);	441	render_glyphs(&viewports[i]);
442		442
443	return i;	443	return i;
444	}	444	}
445		445
446		446
447	/** Initialize framebuffer as a chardev output device	447	/** Initialize framebuffer as a chardev output device
448	*	448	*
449	* @param addr Address of the framebuffer	449	* @param addr Address of the framebuffer
450	* @param xres Screen width in pixels	450	* @param xres Screen width in pixels
451	* @param yres Screen height in pixels	451	* @param yres Screen height in pixels
452	* @param visual Bits per pixel (8, 16, 24, 32)	452	* @param visual Bits per pixel (8, 16, 24, 32)
453	* @param scan Bytes per one scanline	453	* @param scan Bytes per one scanline
454	*	454	*
455	*/	455	*/
456	static bool screen_init(void *addr, unsigned int xres, unsigned int yres,	456	static bool screen_init(void *addr, unsigned int xres, unsigned int yres,
457	unsigned int scan, unsigned int visual)	457	unsigned int scan, unsigned int visual)
458	{	458	{
459	switch (visual) {	459	switch (visual) {
460	case VISUAL_INDIRECT_8:	460	case VISUAL_INDIRECT_8:
461	screen.rgb_conv = rgb_323;	461	screen.rgb_conv = rgb_323;
462	screen.pixelbytes = 1;	462	screen.pixelbytes = 1;
463	break;	463	break;
464	case VISUAL_RGB_5_5_5:	464	case VISUAL_RGB_5_5_5:
465	screen.rgb_conv = rgb_555;	465	screen.rgb_conv = rgb_555;
466	screen.pixelbytes = 2;	466	screen.pixelbytes = 2;
467	break;	467	break;
468	case VISUAL_RGB_5_6_5:	468	case VISUAL_RGB_5_6_5:
469	screen.rgb_conv = rgb_565;	469	screen.rgb_conv = rgb_565;
470	screen.pixelbytes = 2;	470	screen.pixelbytes = 2;
471	break;	471	break;
472	case VISUAL_RGB_8_8_8:	472	case VISUAL_RGB_8_8_8:
473	screen.rgb_conv = rgb_888;	473	screen.rgb_conv = rgb_888;
474	screen.pixelbytes = 3;	474	screen.pixelbytes = 3;
475	break;	475	break;
476	case VISUAL_RGB_8_8_8_0:	476	case VISUAL_RGB_8_8_8_0:
477	screen.rgb_conv = rgb_888;	477	screen.rgb_conv = rgb_888;
478	screen.pixelbytes = 4;	478	screen.pixelbytes = 4;
479	break;	479	break;
480	case VISUAL_RGB_0_8_8_8:	480	case VISUAL_RGB_0_8_8_8:
481	screen.rgb_conv = rgb_0888;	481	screen.rgb_conv = rgb_0888;
482	screen.pixelbytes = 4;	482	screen.pixelbytes = 4;
483	break;	483	break;
484	case VISUAL_BGR_0_8_8_8:	484	case VISUAL_BGR_0_8_8_8:
485	screen.rgb_conv = bgr_0888;	485	screen.rgb_conv = bgr_0888;
486	screen.pixelbytes = 4;	486	screen.pixelbytes = 4;
487	break;	487	break;
488	default:	488	default:
489	return false;	489	return false;
490	}	490	}
491		491
492	screen.fb_addr = (unsigned char *) addr;	492	screen.fb_addr = (unsigned char *) addr;
493	screen.xres = xres;	493	screen.xres = xres;
494	screen.yres = yres;	494	screen.yres = yres;
495	screen.scanline = scan;	495	screen.scanline = scan;
496		496
497	screen.glyphscanline = FONT_WIDTH * screen.pixelbytes;	497	screen.glyphscanline = FONT_WIDTH * screen.pixelbytes;
498	screen.glyphbytes = screen.glyphscanline * FONT_SCANLINES;	498	screen.glyphbytes = screen.glyphscanline * FONT_SCANLINES;
499		499
500	/* Create first viewport */	500	/* Create first viewport */

Subversion Repositories HelenOS

(root)/trunk/uspace/srv/fb/fb.c @ 4685 – Rev 3710 → 3715