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 */
 
/** Function to render a pixel from a RGB value. */
typedef void (*rgb_conv_t)(void *, uint32_t);
 
/** Function to draw a glyph. */
typedef void (*dg_t)(unsigned int x, unsigned int y, bool cursor,
    uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color);
 
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
     */
 
    /** Current style. */
    style_t style;
 
    /** Pre-rendered mask for rendering glyphs. Different viewports
     * might use different drawing functions depending on whether their
     * scanlines are aligned on a word boundary.*/
    uint8_t *glyphs;
 
    uint8_t *bgpixel;
 
    /** Glyph drawing function for this viewport. */
    dg_t dglyph;
   
    /* 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 */
 
static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
    uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color);
static void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
    uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color);
 
static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
    unsigned int row);
 
 
#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));
}
 
/** Draw a filled rectangle.
 *
 * @note Need real implementation that does not access VRAM twice.
 */
static void draw_filled_rect(unsigned int x0, unsigned int y0, unsigned int x1,
    unsigned int y1, uint32_t color)
{
    unsigned int x, y;
    unsigned int copy_bytes;
 
    uint8_t *sp, *dp;
    uint8_t cbuf[4];
 
    if (y0 >= y1 || x0 >= x1) return;
    screen.rgb_conv(cbuf, color);
 
    sp = &screen.fb_addr[FB_POS(x0, y0)];
    dp = sp;
 
    /* Draw the first line. */
    for (x = x0; x < x1; x++) {
        memcpy(dp, cbuf, screen.pixelbytes);
        dp += screen.pixelbytes;
    }
 
    dp = sp + screen.scanline;
    copy_bytes = (x1 - x0) * screen.pixelbytes;
 
    /* Draw the remaining lines by copying. */
    for (y = y0 + 1; y < y1; y++) {
        memcpy(dp, sp, copy_bytes);
        dp += screen.scanline;
    }
}
 
/** Redraw viewport.
 *
 * @param vport Viewport to redraw
 *
 */
static void vport_redraw(viewport_t *vport)
{
    unsigned int row, col;
 
    for (row = 0; row < vport->rows; row++) {
        for (col = 0; col < vport->cols; col++) {
            draw_vp_glyph(vport, false, col, row);
        }
    }
 
    if (COL2X(vport->cols) < vport->width) {
        draw_filled_rect(
            vport->x + COL2X(vport->cols), vport->y,
            vport->x + vport->width, vport->y + vport->height,
            vport->style.bg_color);
    }
 
    if (ROW2Y(vport->rows) < vport->height) {
        draw_filled_rect(
            vport->x, vport->y + ROW2Y(vport->rows),
            vport->x + vport->width, vport->y + vport->height,
            vport->style.bg_color);
    }
}
 
 
/** 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 the specified 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, col;
    unsigned int x, y;
    uint8_t glyph;
 
    /*
     * Redraw.
     */
 
    y = vport->y;
    for (row = 0; row < vport->rows; row++) {
        x = vport->x;
        for (col = 0; col < vport->cols; col++) {
            if ((row + lines >= 0) && (row + lines < vport->rows)) {
                glyph = vport->backbuf[BB_POS(vport, col, row + lines)];
 
                if (vport->backbuf[BB_POS(vport, col, row)] == glyph) {
                    x += FONT_WIDTH;
                    continue;
                }
            } else {
                glyph = 0;
            }
 
            (*vport->dglyph)(x, y, false, vport->glyphs, glyph,
                vport->style.fg_color, vport->style.bg_color);
            x += FONT_WIDTH;
        }
        y += FONT_SCANLINES;
    }
 
    /*
     * Scroll backbuffer.
     */
 
    if (lines > 0) {
        memmove(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 {
        memmove(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)))
 
 
                    ? 0xffffff : 0x000000);
               
                screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes],
 
                    (fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))
 
 
                    ? 0x000000 : 0xffffff);
 
 
            }
        }
    }
   
    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;
    unsigned int word_size = sizeof(unsigned long);
   
    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;
 
    /*
     * Conditions necessary  to select aligned version:
     *
     *   - word size is divisible by pixelbytes
     *   - cell scanline size is divisible by word size
     *   - cell scanlines are word-aligned
     */
    if ((word_size % screen.pixelbytes) == 0 &&
        (FONT_WIDTH * screen.pixelbytes) % word_size == 0 &&
        (x * screen.pixelbytes) % word_size == 0 &&
        screen.scanline % word_size == 0) {
 
        viewports[i].dglyph = draw_glyph_aligned;
    } else {
        viewports[i].dglyph = draw_glyph_fallback;
    }
 
    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 a glyph, takes advantage of alignment.
 *
 
 * This version can only be used if the following conditions are met:
 
 
 
 *
 *   - word size is divisible by pixelbytes
 *   - cell scanline size is divisible by word size
 *   - cell scanlines are word-aligned
 *
 * It makes use of the pre-rendered mask to process (possibly) several
 * pixels at once (word size / pixelbytes pixels at a time are processed)
 * making it very fast. Most notably this version is not applicable at 24 bits
 * per pixel.
 *
 * @param x     x coordinate of top-left corner on screen.
 * @param y     y coordinate of top-left corner on screen.
 * @param cursor    Draw glyph with cursor
 * @param glyphs    Pointer to font bitmap.
 * @param glyph     Code of the glyph to draw.
 * @param fg_color  Foreground color.
 * @param bg_color  Backgroudn color.
 */
static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
    uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color)
{
    unsigned int i, yd;
    unsigned long fg_buf, bg_buf;
    unsigned long *maskp, *dp;
    unsigned long mask;
    unsigned int ww, d_add;
 
    /*
     * Prepare a pair of words, one filled with foreground-color
     * pattern and the other filled with background-color pattern.
     */
    for (i = 0; i < sizeof(unsigned long) / screen.pixelbytes; i++) {
        screen.rgb_conv(&((uint8_t *)&fg_buf)[i * screen.pixelbytes],
            fg_color);
        screen.rgb_conv(&((uint8_t *)&bg_buf)[i * screen.pixelbytes],
            bg_color);
    }
 
 
    /* Pointer to the current position in the mask. */
    maskp = (unsigned long *) &glyphs[GLYPH_POS(glyph, 0, cursor)];
 
    /* Pointer to the current position on the screen. */
    dp = (unsigned long *) &screen.fb_addr[FB_POS(x, y)];
 
    /* Width of the character cell in words. */
    ww = FONT_WIDTH * screen.pixelbytes / sizeof(unsigned long);
 
    /* Offset to add when moving to another screen scanline. */
    d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
 
    for (yd = 0; yd < FONT_SCANLINES; yd++) {
        /*
         * Now process the cell scanline, combining foreground
         * and background color patters using the pre-rendered mask.
         */
        for (i = 0; i < ww; i++) {
            mask = *maskp++;
            *dp++ = (fg_buf & mask) | (bg_buf & ~mask);
        }
 
        /* Move to the beginning of the next scanline of the cell. */
        dp = (unsigned long *) ((uint8_t *) dp + d_add);
    }
}
 
/** Draw a glyph, fallback version.
 *
 * This version does not make use of the pre-rendered mask, it uses
 * the font bitmap directly. It works always, but it is slower.
 *
 * @param x     x coordinate of top-left corner on screen.
 * @param y     y coordinate of top-left corner on screen.
 * @param cursor    Draw glyph with cursor
 * @param glyphs    Pointer to font bitmap.
 * @param glyph     Code of the glyph to draw.
 * @param fg_color  Foreground color.
 * @param bg_color  Backgroudn color.
 */
void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
    uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color)
{
    unsigned int i, j, yd;
    uint8_t fg_buf[4], bg_buf[4];
    uint8_t *dp, *sp;
    unsigned int d_add;
    uint8_t b;
 
    /* Pre-render 1x the foreground and background color pixels. */
    if (cursor) {
        screen.rgb_conv(fg_buf, bg_color);
        screen.rgb_conv(bg_buf, fg_color);
    } else {
        screen.rgb_conv(fg_buf, fg_color);
        screen.rgb_conv(bg_buf, bg_color);
    }
 
    /* Pointer to the current position on the screen. */
    dp = (uint8_t *) &screen.fb_addr[FB_POS(x, y)];
 
    /* Offset to add when moving to another screen scanline. */
    d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
 
    for (yd = 0; yd < FONT_SCANLINES; yd++) {
        /* Byte containing bits of the glyph scanline. */
        b = fb_font[glyph * FONT_SCANLINES + yd];
 
        for (i = 0; i < FONT_WIDTH; i++) {
            /* Choose color based on the current bit. */
            sp = (b & 0x80) ? fg_buf : bg_buf;
 
            /* Copy the pixel. */
            for (j = 0; j < screen.pixelbytes; j++) {
                *dp++ = *sp++;
            }
 
            /* Move to the next bit. */
            b = b << 1;
        }
       
        /* Move to the beginning of the next scanline of the cell. */
        dp += d_add;
    }
}
 
/** Draw glyph at specified position in 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_vp_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);
    uint8_t glyph;
   
    glyph = vport->backbuf[BB_POS(vport, col, row)];
 
 
 
    (*vport->dglyph)(x, y, cursor, vport->glyphs, glyph,
        vport->style.fg_color, vport->style.bg_color);
}
 
/** Hide cursor if it is shown
 *
 */
static void cursor_hide(viewport_t *vport)
{
    if ((vport->cursor_active) && (vport->cursor_shown)) {
        draw_vp_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_vp_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_vp_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_vp_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 pointer. */
    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 mouse pointer. */
    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 pointer. */
    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);
 
            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 3739	Rev 3744
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	/** Function to render a pixel from a RGB value. */
74	typedef void (rgb_conv_t)(void , uint32_t);	75	typedef void (rgb_conv_t)(void , uint32_t);
75		76
-		77	/** Function to draw a glyph. */
-		78	typedef void (*dg_t)(unsigned int x, unsigned int y, bool cursor,
-		79	uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color);
-		80
76	struct {	81	struct {
77	uint8_t *fb_addr;	82	uint8_t *fb_addr;
78		83
79	unsigned int xres;	84	unsigned int xres;
80	unsigned int yres;	85	unsigned int yres;
81		86
82	unsigned int scanline;	87	unsigned int scanline;
83	unsigned int glyphscanline;	88	unsigned int glyphscanline;
84		89
85	unsigned int pixelbytes;	90	unsigned int pixelbytes;
86	unsigned int glyphbytes;	91	unsigned int glyphbytes;
87		92
88	rgb_conv_t rgb_conv;	93	rgb_conv_t rgb_conv;
89	} screen;	94	} screen;
90		95
91	typedef struct {	96	typedef struct {
92	bool initialized;	97	bool initialized;
93	unsigned int x;	98	unsigned int x;
94	unsigned int y;	99	unsigned int y;
95	unsigned int width;	100	unsigned int width;
96	unsigned int height;	101	unsigned int height;
97		102
98	/* Text support in window */	103	/* Text support in window */
99	unsigned int cols;	104	unsigned int cols;
100	unsigned int rows;	105	unsigned int rows;
101		106
-		107	/*
102	/* Style and glyphs for text printing */	108	* Style and glyphs for text printing
-		109	*/
-		110
-		111	/** Current style. */
103	style_t style;	112	style_t style;
-		113
-		114	/** Pre-rendered mask for rendering glyphs. Different viewports
-		115	* might use different drawing functions depending on whether their
-		116	* scanlines are aligned on a word boundary.*/
104	uint8_t *glyphs;	117	uint8_t *glyphs;
-		118
105	uint8_t *bgpixel;	119	uint8_t *bgpixel;
-		120
-		121	/** Glyph drawing function for this viewport. */
-		122	dg_t dglyph;
106		123
107	/* Auto-cursor position */	124	/* Auto-cursor position */
108	bool cursor_active;	125	bool cursor_active;
109	unsigned int cur_col;	126	unsigned int cur_col;
110	unsigned int cur_row;	127	unsigned int cur_row;
111	bool cursor_shown;	128	bool cursor_shown;
112		129
113	/* Back buffer */	130	/* Back buffer */
114	unsigned int bbsize;	131	unsigned int bbsize;
115	uint8_t *backbuf;	132	uint8_t *backbuf;
116	} viewport_t;	133	} viewport_t;
117		134
118	typedef struct {	135	typedef struct {
119	bool initialized;	136	bool initialized;
120	bool enabled;	137	bool enabled;
121	unsigned int vp;	138	unsigned int vp;
122		139
123	unsigned int pos;	140	unsigned int pos;
124	unsigned int animlen;	141	unsigned int animlen;
125	unsigned int pixmaps[MAX_ANIM_LEN];	142	unsigned int pixmaps[MAX_ANIM_LEN];
126	} animation_t;	143	} animation_t;
127		144
128	static animation_t animations[MAX_ANIMATIONS];	145	static animation_t animations[MAX_ANIMATIONS];
129	static bool anims_enabled;	146	static bool anims_enabled;
130		147
131	typedef struct {	148	typedef struct {
132	unsigned int width;	149	unsigned int width;
133	unsigned int height;	150	unsigned int height;
134	uint8_t *data;	151	uint8_t *data;
135	} pixmap_t;	152	} pixmap_t;
136		153
137	static pixmap_t pixmaps[MAX_PIXMAPS];	154	static pixmap_t pixmaps[MAX_PIXMAPS];
138	static viewport_t viewports[128];	155	static viewport_t viewports[128];
139		156
140	static bool client_connected = false; /*< Allow only 1 connection /	157	static bool client_connected = false; /*< Allow only 1 connection /
141		158
142	static void draw_glyph(unsigned int x, unsigned int y, bool cursor,	159	static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
-		160	uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color);
-		161	static void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
143	uint8_t *glyphs, uint8_t glyph);	162	uint8_t *glyphs, uint8_t glyph, uint32_t fg_color, uint32_t bg_color);
-		163
144	static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,	164	static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
145	unsigned int row);	165	unsigned int row);
146		166
147		167
148	#define RED(x, bits) ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))	168	#define RED(x, bits) ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
149	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))	169	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
150	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))	170	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
151		171
152	#define COL2X(col) ((col) * FONT_WIDTH)	172	#define COL2X(col) ((col) * FONT_WIDTH)
153	#define ROW2Y(row) ((row) * FONT_SCANLINES)	173	#define ROW2Y(row) ((row) * FONT_SCANLINES)
154		174
155	#define X2COL(x) ((x) / FONT_WIDTH)	175	#define X2COL(x) ((x) / FONT_WIDTH)
156	#define Y2ROW(y) ((y) / FONT_SCANLINES)	176	#define Y2ROW(y) ((y) / FONT_SCANLINES)
157		177
158	#define FB_POS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)	178	#define FB_POS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)
159	#define BB_POS(vport, col, row) ((row) * vport->cols + (col))	179	#define BB_POS(vport, col, row) ((row) * vport->cols + (col))
160	#define GLYPH_POS(glyph, y, cursor) (((glyph) + (cursor) * FONT_GLYPHS) * screen.glyphbytes + (y) * screen.glyphscanline)	180	#define GLYPH_POS(glyph, y, cursor) (((glyph) + (cursor) * FONT_GLYPHS) * screen.glyphbytes + (y) * screen.glyphscanline)
161		181
162		182
163	/** ARGB 8:8:8:8 conversion	183	/** ARGB 8:8:8:8 conversion
164	*	184	*
165	*/	185	*/
166	static void rgb_0888(void *dst, uint32_t rgb)	186	static void rgb_0888(void *dst, uint32_t rgb)
167	{	187	{
168	((uint32_t ) dst) = rgb & 0xffffff;	188	((uint32_t ) dst) = rgb & 0xffffff;
169	}	189	}
170		190
171		191
172	/** ABGR 8:8:8:8 conversion	192	/** ABGR 8:8:8:8 conversion
173	*	193	*
174	*/	194	*/
175	static void bgr_0888(void *dst, uint32_t rgb)	195	static void bgr_0888(void *dst, uint32_t rgb)
176	{	196	{
177	((uint32_t ) dst)	197	((uint32_t ) dst)
178	= (BLUE(rgb, 8) << 16) \| (GREEN(rgb, 8) << 8) \| RED(rgb, 8);	198	= (BLUE(rgb, 8) << 16) \| (GREEN(rgb, 8) << 8) \| RED(rgb, 8);
179	}	199	}
180		200
181		201
182	/** BGR 8:8:8 conversion	202	/** BGR 8:8:8 conversion
183	*	203	*
184	*/	204	*/
185	static void rgb_888(void *dst, uint32_t rgb)	205	static void rgb_888(void *dst, uint32_t rgb)
186	{	206	{
187	#if defined(FB_INVERT_ENDIAN)	207	#if defined(FB_INVERT_ENDIAN)
188	((uint8_t *) dst)[0] = RED(rgb, 8);	208	((uint8_t *) dst)[0] = RED(rgb, 8);
189	((uint8_t *) dst)[1] = GREEN(rgb, 8);	209	((uint8_t *) dst)[1] = GREEN(rgb, 8);
190	((uint8_t *) dst)[2] = BLUE(rgb, 8);	210	((uint8_t *) dst)[2] = BLUE(rgb, 8);
191	#else	211	#else
192	((uint8_t *) dst)[0] = BLUE(rgb, 8);	212	((uint8_t *) dst)[0] = BLUE(rgb, 8);
193	((uint8_t *) dst)[1] = GREEN(rgb, 8);	213	((uint8_t *) dst)[1] = GREEN(rgb, 8);
194	((uint8_t *) dst)[2] = RED(rgb, 8);	214	((uint8_t *) dst)[2] = RED(rgb, 8);
195	#endif	215	#endif
196	}	216	}
197		217
198		218
199	/** RGB 5:5:5 conversion	219	/** RGB 5:5:5 conversion
200	*	220	*
201	*/	221	*/
202	static void rgb_555(void *dst, uint32_t rgb)	222	static void rgb_555(void *dst, uint32_t rgb)
203	{	223	{
204	((uint16_t ) dst)	224	((uint16_t ) dst)
205	= (RED(rgb, 5) << 10) \| (GREEN(rgb, 5) << 5) \| BLUE(rgb, 5);	225	= (RED(rgb, 5) << 10) \| (GREEN(rgb, 5) << 5) \| BLUE(rgb, 5);
206	}	226	}
207		227
208		228
209	/** RGB 5:6:5 conversion	229	/** RGB 5:6:5 conversion
210	*	230	*
211	*/	231	*/
212	static void rgb_565(void *dst, uint32_t rgb)	232	static void rgb_565(void *dst, uint32_t rgb)
213	{	233	{
214	((uint16_t ) dst)	234	((uint16_t ) dst)
215	= (RED(rgb, 5) << 11) \| (GREEN(rgb, 6) << 5) \| BLUE(rgb, 5);	235	= (RED(rgb, 5) << 11) \| (GREEN(rgb, 6) << 5) \| BLUE(rgb, 5);
216	}	236	}
217		237
218		238
219	/** RGB 3:2:3	239	/** RGB 3:2:3
220	*	240	*
221	*/	241	*/
222	static void rgb_323(void *dst, uint32_t rgb)	242	static void rgb_323(void *dst, uint32_t rgb)
223	{	243	{
224	((uint8_t ) dst)	244	((uint8_t ) dst)
225	= ~((RED(rgb, 3) << 5) \| (GREEN(rgb, 2) << 3) \| BLUE(rgb, 3));	245	= ~((RED(rgb, 3) << 5) \| (GREEN(rgb, 2) << 3) \| BLUE(rgb, 3));
226	}	246	}
227		247
228	/** Draw a filled rectangle.	248	/** Draw a filled rectangle.
229	*	249	*
230	* @note Need real implementation that does not access VRAM twice.	250	* @note Need real implementation that does not access VRAM twice.
231	*/	251	*/
232	static void draw_filled_rect(unsigned int x0, unsigned int y0, unsigned int x1,	252	static void draw_filled_rect(unsigned int x0, unsigned int y0, unsigned int x1,
233	unsigned int y1, uint32_t color)	253	unsigned int y1, uint32_t color)
234	{	254	{
235	unsigned int x, y;	255	unsigned int x, y;
236	unsigned int copy_bytes;	256	unsigned int copy_bytes;
237		257
238	uint8_t sp, dp;	258	uint8_t sp, dp;
239	uint8_t cbuf[4];	259	uint8_t cbuf[4];
240		260
241	if (y0 >= y1 \|\| x0 >= x1) return;	261	if (y0 >= y1 \|\| x0 >= x1) return;
242	screen.rgb_conv(cbuf, color);	262	screen.rgb_conv(cbuf, color);
243		263
244	sp = &screen.fb_addr[FB_POS(x0, y0)];	264	sp = &screen.fb_addr[FB_POS(x0, y0)];
245	dp = sp;	265	dp = sp;
246		266
247	/* Draw the first line. */	267	/* Draw the first line. */
248	for (x = x0; x < x1; x++) {	268	for (x = x0; x < x1; x++) {
249	memcpy(dp, cbuf, screen.pixelbytes);	269	memcpy(dp, cbuf, screen.pixelbytes);
250	dp += screen.pixelbytes;	270	dp += screen.pixelbytes;
251	}	271	}
252		272
253	dp = sp + screen.scanline;	273	dp = sp + screen.scanline;
254	copy_bytes = (x1 - x0) * screen.pixelbytes;	274	copy_bytes = (x1 - x0) * screen.pixelbytes;
255		275
256	/* Draw the remaining lines by copying. */	276	/* Draw the remaining lines by copying. */
257	for (y = y0 + 1; y < y1; y++) {	277	for (y = y0 + 1; y < y1; y++) {
258	memcpy(dp, sp, copy_bytes);	278	memcpy(dp, sp, copy_bytes);
259	dp += screen.scanline;	279	dp += screen.scanline;
260	}	280	}
261	}	281	}
262		282
263	/** Redraw viewport.	283	/** Redraw viewport.
264	*	284	*
265	* @param vport Viewport to redraw	285	* @param vport Viewport to redraw
266	*	286	*
267	*/	287	*/
268	static void vport_redraw(viewport_t *vport)	288	static void vport_redraw(viewport_t *vport)
269	{	289	{
270	unsigned int row, col;	290	unsigned int row, col;
271		291
272	for (row = 0; row < vport->rows; row++) {	292	for (row = 0; row < vport->rows; row++) {
273	for (col = 0; col < vport->cols; col++) {	293	for (col = 0; col < vport->cols; col++) {
274	draw_vp_glyph(vport, false, col, row);	294	draw_vp_glyph(vport, false, col, row);
275	}	295	}
276	}	296	}
277		297
278	if (COL2X(vport->cols) < vport->width) {	298	if (COL2X(vport->cols) < vport->width) {
279	draw_filled_rect(	299	draw_filled_rect(
280	vport->x + COL2X(vport->cols), vport->y,	300	vport->x + COL2X(vport->cols), vport->y,
281	vport->x + vport->width, vport->y + vport->height,	301	vport->x + vport->width, vport->y + vport->height,
282	vport->style.bg_color);	302	vport->style.bg_color);
283	}	303	}
284		304
285	if (ROW2Y(vport->rows) < vport->height) {	305	if (ROW2Y(vport->rows) < vport->height) {
286	draw_filled_rect(	306	draw_filled_rect(
287	vport->x, vport->y + ROW2Y(vport->rows),	307	vport->x, vport->y + ROW2Y(vport->rows),
288	vport->x + vport->width, vport->y + vport->height,	308	vport->x + vport->width, vport->y + vport->height,
289	vport->style.bg_color);	309	vport->style.bg_color);
290	}	310	}
291	}	311	}
292		312
293		313
294	/** Clear viewport.	314	/** Clear viewport.
295	*	315	*
296	* @param vport Viewport to clear	316	* @param vport Viewport to clear
297	*	317	*
298	*/	318	*/
299	static void vport_clear(viewport_t *vport)	319	static void vport_clear(viewport_t *vport)
300	{	320	{
301	memset(vport->backbuf, 0, vport->bbsize);	321	memset(vport->backbuf, 0, vport->bbsize);
302	vport_redraw(vport);	322	vport_redraw(vport);
303	}	323	}
304		324
305	/** Scroll viewport by the specified number of lines.	325	/** Scroll viewport by the specified number of lines.
306	*	326	*
307	* @param vport Viewport to scroll	327	* @param vport Viewport to scroll
308	* @param lines Number of lines to scroll	328	* @param lines Number of lines to scroll
309	*	329	*
310	*/	330	*/
311	static void vport_scroll(viewport_t *vport, int lines)	331	static void vport_scroll(viewport_t *vport, int lines)
312	{	332	{
313	unsigned int row, col;	333	unsigned int row, col;
314	unsigned int x, y;	334	unsigned int x, y;
315	uint8_t glyph;	335	uint8_t glyph;
316		336
317	/*	337	/*
318	* Redraw.	338	* Redraw.
319	*/	339	*/
320		340
321	y = vport->y;	341	y = vport->y;
322	for (row = 0; row < vport->rows; row++) {	342	for (row = 0; row < vport->rows; row++) {
323	x = vport->x;	343	x = vport->x;
324	for (col = 0; col < vport->cols; col++) {	344	for (col = 0; col < vport->cols; col++) {
325	if ((row + lines >= 0) && (row + lines < vport->rows)) {	345	if ((row + lines >= 0) && (row + lines < vport->rows)) {
326	glyph = vport->backbuf[BB_POS(vport, col, row + lines)];	346	glyph = vport->backbuf[BB_POS(vport, col, row + lines)];
327		347
328	if (vport->backbuf[BB_POS(vport, col, row)] == glyph) {	348	if (vport->backbuf[BB_POS(vport, col, row)] == glyph) {
329	x += FONT_WIDTH;	349	x += FONT_WIDTH;
330	continue;	350	continue;
331	}	351	}
332	} else {	352	} else {
333	glyph = 0;	353	glyph = 0;
334	}	354	}
335		355
336	draw_glyph(x, y, false, vport->glyphs, glyph);	356	(*vport->dglyph)(x, y, false, vport->glyphs, glyph,
-		357	vport->style.fg_color, vport->style.bg_color);
337	x += FONT_WIDTH;	358	x += FONT_WIDTH;
338	}	359	}
339	y += FONT_SCANLINES;	360	y += FONT_SCANLINES;
340	}	361	}
341		362
342	/*	363	/*
343	* Scroll backbuffer.	364	* Scroll backbuffer.
344	*/	365	*/
345		366
346	if (lines > 0) {	367	if (lines > 0) {
347	memmove(vport->backbuf, vport->backbuf + vport->cols * lines,	368	memmove(vport->backbuf, vport->backbuf + vport->cols * lines,
348	vport->cols * (vport->rows - lines));	369	vport->cols * (vport->rows - lines));
349	memset(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)],	370	memset(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)],
350	0, vport->cols * lines);	371	0, vport->cols * lines);
351	} else {	372	} else {
352	memmove(vport->backbuf - vport->cols * lines, vport->backbuf,	373	memmove(vport->backbuf - vport->cols * lines, vport->backbuf,
353	vport->cols * (vport->rows + lines));	374	vport->cols * (vport->rows + lines));
354	memset(vport->backbuf, 0, - vport->cols * lines);	375	memset(vport->backbuf, 0, - vport->cols * lines);
355	}	376	}
356	}	377	}
357		378
358	/** Render glyphs	379	/** Render glyphs
359	*	380	*
360	* Convert glyphs from device independent font	381	* Convert glyphs from device independent font
361	* description to current visual representation.	382	* description to current visual representation.
362	*	383	*
363	* @param vport Viewport	384	* @param vport Viewport
364	*	385	*
365	*/	386	*/
366	static void render_glyphs(viewport_t* vport)	387	static void render_glyphs(viewport_t* vport)
367	{	388	{
368	unsigned int glyph;	389	unsigned int glyph;
369		390
370	for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {	391	for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
371	unsigned int y;	392	unsigned int y;
372		393
373	for (y = 0; y < FONT_SCANLINES; y++) {	394	for (y = 0; y < FONT_SCANLINES; y++) {
374	unsigned int x;	395	unsigned int x;
375		396
376	for (x = 0; x < FONT_WIDTH; x++) {	397	for (x = 0; x < FONT_WIDTH; x++) {
377	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, false) + x * screen.pixelbytes],	398	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, false) + x * screen.pixelbytes],
378	(fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))	399	(fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))
379	? vport->style.fg_color : vport->style.bg_color);	-
380		-
381	uint32_t curcolor;	400	? 0xffffff : 0x000000);
382		401
383	if (y < FONT_SCANLINES - 2)	402	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes],
384	curcolor =	-
385	(fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))	403	(fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))
386	? vport->style.fg_color : vport->style.bg_color;	-
387	else	-
388	curcolor = vport->style.fg_color;	404	? 0x000000 : 0xffffff);
389		-
390	screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes], curcolor);	-
391	}	405	}
392	}	406	}
393	}	407	}
394		408
395	screen.rgb_conv(vport->bgpixel, vport->style.bg_color);	409	screen.rgb_conv(vport->bgpixel, vport->style.bg_color);
396	}	410	}
397		411
398		412
399	/** Create new viewport	413	/** Create new viewport
400	*	414	*
401	* @param x Origin of the viewport (x).	415	* @param x Origin of the viewport (x).
402	* @param y Origin of the viewport (y).	416	* @param y Origin of the viewport (y).
403	* @param width Width of the viewport.	417	* @param width Width of the viewport.
404	* @param height Height of the viewport.	418	* @param height Height of the viewport.
405	*	419	*
406	* @return New viewport number.	420	* @return New viewport number.
407	*	421	*
408	*/	422	*/
409	static int vport_create(unsigned int x, unsigned int y,	423	static int vport_create(unsigned int x, unsigned int y,
410	unsigned int width, unsigned int height)	424	unsigned int width, unsigned int height)
411	{	425	{
412	unsigned int i;	426	unsigned int i;
413		427
414	for (i = 0; i < MAX_VIEWPORTS; i++) {	428	for (i = 0; i < MAX_VIEWPORTS; i++) {
415	if (!viewports[i].initialized)	429	if (!viewports[i].initialized)
416	break;	430	break;
417	}	431	}
418	if (i == MAX_VIEWPORTS)	432	if (i == MAX_VIEWPORTS)
419	return ELIMIT;	433	return ELIMIT;
420		434
421	unsigned int cols = width / FONT_WIDTH;	435	unsigned int cols = width / FONT_WIDTH;
422	unsigned int rows = height / FONT_SCANLINES;	436	unsigned int rows = height / FONT_SCANLINES;
423	unsigned int bbsize = cols * rows;	437	unsigned int bbsize = cols * rows;
424	unsigned int glyphsize = 2 * FONT_GLYPHS * screen.glyphbytes;	438	unsigned int glyphsize = 2 * FONT_GLYPHS * screen.glyphbytes;
-		439	unsigned int word_size = sizeof(unsigned long);
425		440
426	uint8_t backbuf = (uint8_t ) malloc(bbsize);	441	uint8_t backbuf = (uint8_t ) malloc(bbsize);
427	if (!backbuf)	442	if (!backbuf)
428	return ENOMEM;	443	return ENOMEM;
429		444
430	uint8_t glyphs = (uint8_t ) malloc(glyphsize);	445	uint8_t glyphs = (uint8_t ) malloc(glyphsize);
431	if (!glyphs) {	446	if (!glyphs) {
432	free(backbuf);	447	free(backbuf);
433	return ENOMEM;	448	return ENOMEM;
434	}	449	}
435		450
436	uint8_t bgpixel = (uint8_t ) malloc(screen.pixelbytes);	451	uint8_t bgpixel = (uint8_t ) malloc(screen.pixelbytes);
437	if (!bgpixel) {	452	if (!bgpixel) {
438	free(glyphs);	453	free(glyphs);
439	free(backbuf);	454	free(backbuf);
440	return ENOMEM;	455	return ENOMEM;
441	}	456	}
442		457
443	memset(backbuf, 0, bbsize);	458	memset(backbuf, 0, bbsize);
444	memset(glyphs, 0, glyphsize);	459	memset(glyphs, 0, glyphsize);
445	memset(bgpixel, 0, screen.pixelbytes);	460	memset(bgpixel, 0, screen.pixelbytes);
446		461
447	viewports[i].x = x;	462	viewports[i].x = x;
448	viewports[i].y = y;	463	viewports[i].y = y;
449	viewports[i].width = width;	464	viewports[i].width = width;
450	viewports[i].height = height;	465	viewports[i].height = height;
451		466
452	viewports[i].cols = cols;	467	viewports[i].cols = cols;
453	viewports[i].rows = rows;	468	viewports[i].rows = rows;
454		469
455	viewports[i].style.bg_color = DEFAULT_BGCOLOR;	470	viewports[i].style.bg_color = DEFAULT_BGCOLOR;
456	viewports[i].style.fg_color = DEFAULT_FGCOLOR;	471	viewports[i].style.fg_color = DEFAULT_FGCOLOR;
457		472
458	viewports[i].glyphs = glyphs;	473	viewports[i].glyphs = glyphs;
459	viewports[i].bgpixel = bgpixel;	474	viewports[i].bgpixel = bgpixel;
-		475
-		476	/*
-		477	* Conditions necessary to select aligned version:
-		478	*
-		479	* - word size is divisible by pixelbytes
-		480	* - cell scanline size is divisible by word size
-		481	* - cell scanlines are word-aligned
-		482	*/
-		483	if ((word_size % screen.pixelbytes) == 0 &&
-		484	(FONT_WIDTH * screen.pixelbytes) % word_size == 0 &&
-		485	(x * screen.pixelbytes) % word_size == 0 &&
-		486	screen.scanline % word_size == 0) {
-		487
-		488	viewports[i].dglyph = draw_glyph_aligned;
-		489	} else {
-		490	viewports[i].dglyph = draw_glyph_fallback;
460		491	}
-		492
461	viewports[i].cur_col = 0;	493	viewports[i].cur_col = 0;

Subversion Repositories HelenOS

(root)/trunk/uspace/srv/fb/fb.c – Rev 3739 → 3744