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  1. /*
  2.  * Copyright (c) 2008 Martin Decky
  3.  * Copyright (c) 2006 Jakub Vana
  4.  * Copyright (c) 2006 Ondrej Palkovsky
  5.  * All rights reserved.
  6.  *
  7.  * Redistribution and use in source and binary forms, with or without
  8.  * modification, are permitted provided that the following conditions
  9.  * are met:
  10.  *
  11.  * - Redistributions of source code must retain the above copyright
  12.  *   notice, this list of conditions and the following disclaimer.
  13.  * - Redistributions in binary form must reproduce the above copyright
  14.  *   notice, this list of conditions and the following disclaimer in the
  15.  *   documentation and/or other materials provided with the distribution.
  16.  * - The name of the author may not be used to endorse or promote products
  17.  *   derived from this software without specific prior written permission.
  18.  *
  19.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29.  */
  30.  
  31. /**
  32.  * @defgroup fb Graphical framebuffer
  33.  * @brief   HelenOS graphical framebuffer.
  34.  * @ingroup fbs
  35.  * @{
  36.  */
  37.  
  38. /** @file
  39.  */
  40.  
  41. #include <stdlib.h>
  42. #include <unistd.h>
  43. #include <string.h>
  44. #include <ddi.h>
  45. #include <sysinfo.h>
  46. #include <align.h>
  47. #include <as.h>
  48. #include <ipc/fb.h>
  49. #include <ipc/ipc.h>
  50. #include <ipc/ns.h>
  51. #include <ipc/services.h>
  52. #include <kernel/errno.h>
  53. #include <kernel/genarch/fb/visuals.h>
  54. #include <async.h>
  55. #include <bool.h>
  56.  
  57. #include "font-8x16.h"
  58. #include "fb.h"
  59. #include "main.h"
  60. #include "../console/screenbuffer.h"
  61. #include "ppm.h"
  62.  
  63. #include "pointer.xbm"
  64. #include "pointer_mask.xbm"
  65.  
  66. #define DEFAULT_BGCOLOR  0xf0f0f0
  67. #define DEFAULT_FGCOLOR  0x000000
  68.  
  69. #define MAX_ANIM_LEN     8
  70. #define MAX_ANIMATIONS   4
  71. #define MAX_PIXMAPS      256  /**< Maximum number of saved pixmaps */
  72. #define MAX_VIEWPORTS    128  /**< Viewport is a rectangular area on the screen */
  73.  
  74. typedef void (*rgb_conv_t)(void *, uint32_t);
  75.  
  76. struct {
  77.     uint8_t *fb_addr;
  78.    
  79.     unsigned int xres;
  80.     unsigned int yres;
  81.    
  82.     unsigned int scanline;
  83.     unsigned int glyphscanline;
  84.    
  85.     unsigned int pixelbytes;
  86.     unsigned int glyphbytes;
  87.    
  88.     rgb_conv_t rgb_conv;
  89. } screen;
  90.  
  91. typedef struct {
  92.     bool initialized;
  93.     unsigned int x;
  94.     unsigned int y;
  95.     unsigned int width;
  96.     unsigned int height;
  97.    
  98.     /* Text support in window */
  99.     unsigned int cols;
  100.     unsigned int rows;
  101.    
  102.     /* Style and glyphs for text printing */
  103.     style_t style;
  104.     uint8_t *glyphs;
  105.     uint8_t *bgpixel;
  106.    
  107.     /* Auto-cursor position */
  108.     bool cursor_active;
  109.     unsigned int cur_col;
  110.     unsigned int cur_row;
  111.     bool cursor_shown;
  112.    
  113.     /* Back buffer */
  114.     unsigned int bbsize;
  115.     uint8_t *backbuf;
  116. } viewport_t;
  117.  
  118. typedef struct {
  119.     bool initialized;
  120.     bool enabled;
  121.     unsigned int vp;
  122.    
  123.     unsigned int pos;
  124.     unsigned int animlen;
  125.     unsigned int pixmaps[MAX_ANIM_LEN];
  126. } animation_t;
  127.  
  128. static animation_t animations[MAX_ANIMATIONS];
  129. static bool anims_enabled;
  130.  
  131. typedef struct {
  132.     unsigned int width;
  133.     unsigned int height;
  134.     uint8_t *data;
  135. } pixmap_t;
  136.  
  137. static pixmap_t pixmaps[MAX_PIXMAPS];
  138. static viewport_t viewports[128];
  139.  
  140. static bool client_connected = false;  /**< Allow only 1 connection */
  141.  
  142. static void draw_glyph(unsigned int x, unsigned int y, bool cursor,
  143.     uint8_t *glyphs, uint8_t glyph);
  144. static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
  145.     unsigned int row);
  146.  
  147.  
  148. #define RED(x, bits)                 ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
  149. #define GREEN(x, bits)               ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
  150. #define BLUE(x, bits)                ((x >> (8 - bits)) & ((1 << bits) - 1))
  151.  
  152. #define COL2X(col)                   ((col) * FONT_WIDTH)
  153. #define ROW2Y(row)                   ((row) * FONT_SCANLINES)
  154.  
  155. #define X2COL(x)                     ((x) / FONT_WIDTH)
  156. #define Y2ROW(y)                     ((y) / FONT_SCANLINES)
  157.  
  158. #define FB_POS(x, y)                 ((y) * screen.scanline + (x) * screen.pixelbytes)
  159. #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)
  161.  
  162.  
  163. /** ARGB 8:8:8:8 conversion
  164.  *
  165.  */
  166. static void rgb_0888(void *dst, uint32_t rgb)
  167. {
  168.     *((uint32_t *) dst) = rgb & 0xffffff;
  169. }
  170.  
  171.  
  172. /** ABGR 8:8:8:8 conversion
  173.  *
  174.  */
  175. static void bgr_0888(void *dst, uint32_t rgb)
  176. {
  177.     *((uint32_t *) dst)
  178.         = (BLUE(rgb, 8) << 16) | (GREEN(rgb, 8) << 8) | RED(rgb, 8);
  179. }
  180.  
  181.  
  182. /** BGR 8:8:8 conversion
  183.  *
  184.  */
  185. static void rgb_888(void *dst, uint32_t rgb)
  186. {
  187. #if defined(FB_INVERT_ENDIAN)
  188.     ((uint8_t *) dst)[0] = RED(rgb, 8);
  189.     ((uint8_t *) dst)[1] = GREEN(rgb, 8);
  190.     ((uint8_t *) dst)[2] = BLUE(rgb, 8);
  191. #else
  192.     ((uint8_t *) dst)[0] = BLUE(rgb, 8);
  193.     ((uint8_t *) dst)[1] = GREEN(rgb, 8);
  194.     ((uint8_t *) dst)[2] = RED(rgb, 8);
  195. #endif
  196. }
  197.  
  198.  
  199. /** RGB 5:5:5 conversion
  200.  *
  201.  */
  202. static void rgb_555(void *dst, uint32_t rgb)
  203. {
  204.     *((uint16_t *) dst)
  205.         = (RED(rgb, 5) << 10) | (GREEN(rgb, 5) << 5) | BLUE(rgb, 5);
  206. }
  207.  
  208.  
  209. /** RGB 5:6:5 conversion
  210.  *
  211.  */
  212. static void rgb_565(void *dst, uint32_t rgb)
  213. {
  214.     *((uint16_t *) dst)
  215.         = (RED(rgb, 5) << 11) | (GREEN(rgb, 6) << 5) | BLUE(rgb, 5);
  216. }
  217.  
  218.  
  219. /** RGB 3:2:3
  220.  *
  221.  */
  222. static void rgb_323(void *dst, uint32_t rgb)
  223. {
  224.     *((uint8_t *) dst)
  225.         = ~((RED(rgb, 3) << 5) | (GREEN(rgb, 2) << 3) | BLUE(rgb, 3));
  226. }
  227.  
  228. /** Draw a filled rectangle.
  229.  *
  230.  * @note Need real implementation that does not access VRAM twice.
  231.  */
  232. static void draw_filled_rect(unsigned int x0, unsigned int y0, unsigned int x1,
  233.     unsigned int y1, uint32_t color)
  234. {
  235.     unsigned int x, y;
  236.     unsigned int copy_bytes;
  237.  
  238.     uint8_t *sp, *dp;
  239.     uint8_t cbuf[4];
  240.  
  241.     if (y0 >= y1 || x0 >= x1) return;
  242.     screen.rgb_conv(cbuf, color);
  243.  
  244.     sp = &screen.fb_addr[FB_POS(x0, y0)];
  245.     dp = sp;
  246.  
  247.     /* Draw the first line. */
  248.     for (x = x0; x < x1; x++) {
  249.         memcpy(dp, cbuf, screen.pixelbytes);
  250.         dp += screen.pixelbytes;
  251.     }
  252.  
  253.     dp = sp + screen.scanline;
  254.     copy_bytes = (x1 - x0) * screen.pixelbytes;
  255.  
  256.     /* Draw the remaining lines by copying. */
  257.     for (y = y0 + 1; y < y1; y++) {
  258.         memcpy(dp, sp, copy_bytes);
  259.         dp += screen.scanline;
  260.     }
  261. }
  262.  
  263. /** Redraw viewport.
  264.  *
  265.  * @param vport Viewport to redraw
  266.  *
  267.  */
  268. static void vport_redraw(viewport_t *vport)
  269. {
  270.     unsigned int row, col;
  271.  
  272.     for (row = 0; row < vport->rows; row++) {
  273.         for (col = 0; col < vport->cols; col++) {
  274.             draw_vp_glyph(vport, false, col, row);
  275.         }
  276.     }
  277.  
  278.     if (COL2X(vport->cols) < vport->width) {
  279.         draw_filled_rect(
  280.             vport->x + COL2X(vport->cols), vport->y,
  281.             vport->x + vport->width, vport->y + vport->height,
  282.             vport->style.bg_color);
  283.     }
  284.  
  285.     if (ROW2Y(vport->rows) < vport->height) {
  286.         draw_filled_rect(
  287.             vport->x, vport->y + ROW2Y(vport->rows),
  288.             vport->x + vport->width, vport->y + vport->height,
  289.             vport->style.bg_color);
  290.     }
  291. }
  292.  
  293.  
  294. /** Clear viewport.
  295.  *
  296.  * @param vport Viewport to clear
  297.  *
  298.  */
  299. static void vport_clear(viewport_t *vport)
  300. {
  301.     memset(vport->backbuf, 0, vport->bbsize);
  302.     vport_redraw(vport);
  303. }
  304.  
  305. /** Scroll viewport by the specified number of lines.
  306.  *
  307.  * @param vport Viewport to scroll
  308.  * @param lines Number of lines to scroll
  309.  *
  310.  */
  311. static void vport_scroll(viewport_t *vport, int lines)
  312. {
  313.     unsigned int row, col;
  314.     unsigned int x, y;
  315.     uint8_t glyph;
  316.  
  317.     /*
  318.      * Redraw.
  319.      */
  320.  
  321.     y = vport->y;
  322.     for (row = 0; row < vport->rows; row++) {
  323.         x = vport->x;
  324.         for (col = 0; col < vport->cols; col++) {
  325.             if ((row + lines >= 0) && (row + lines < vport->rows)) {
  326.                 glyph = vport->backbuf[BB_POS(vport, col, row + lines)];
  327.  
  328.                 if (vport->backbuf[BB_POS(vport, col, row)] == glyph) {
  329.                     x += FONT_WIDTH;
  330.                     continue;
  331.                 }
  332.             } else {
  333.                 glyph = 0;
  334.             }
  335.  
  336.             draw_glyph(x, y, false, vport->glyphs, glyph);
  337.             x += FONT_WIDTH;
  338.         }
  339.         y += FONT_SCANLINES;
  340.     }
  341.  
  342.     /*
  343.      * Scroll backbuffer.
  344.      */
  345.  
  346.     if (lines > 0) {
  347.         memmove(vport->backbuf, vport->backbuf + vport->cols * lines,
  348.             vport->cols * (vport->rows - lines));
  349.         memset(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)],
  350.             0, vport->cols * lines);
  351.     } else {
  352.         memmove(vport->backbuf - vport->cols * lines, vport->backbuf,
  353.             vport->cols * (vport->rows + lines));
  354.         memset(vport->backbuf, 0, - vport->cols * lines);
  355.     }
  356. }
  357.  
  358. /** Render glyphs
  359.  *
  360.  * Convert glyphs from device independent font
  361.  * description to current visual representation.
  362.  *
  363.  * @param vport Viewport
  364.  *
  365.  */
  366. static void render_glyphs(viewport_t* vport)
  367. {
  368.     unsigned int glyph;
  369.    
  370.     for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
  371.         unsigned int y;
  372.        
  373.         for (y = 0; y < FONT_SCANLINES; y++) {
  374.             unsigned int x;
  375.            
  376.             for (x = 0; x < FONT_WIDTH; x++) {
  377.                 screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, false) + x * screen.pixelbytes],
  378.                     (fb_font[glyph * FONT_SCANLINES + y] & (1 << (7 - x)))
  379.                     ? vport->style.fg_color : vport->style.bg_color);
  380.                
  381.                 uint32_t curcolor;
  382.                
  383.                 if (y < FONT_SCANLINES - 2)
  384.                     curcolor =
  385.                         (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;
  389.                
  390.                 screen.rgb_conv(&vport->glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes], curcolor);
  391.             }
  392.         }
  393.     }
  394.    
  395.     screen.rgb_conv(vport->bgpixel, vport->style.bg_color);
  396. }
  397.  
  398.  
  399. /** Create new viewport
  400.  *
  401.  * @param x      Origin of the viewport (x).
  402.  * @param y      Origin of the viewport (y).
  403.  * @param width  Width of the viewport.
  404.  * @param height Height of the viewport.
  405.  *
  406.  * @return New viewport number.
  407.  *
  408.  */
  409. static int vport_create(unsigned int x, unsigned int y,
  410.     unsigned int width, unsigned int height)
  411. {
  412.     unsigned int i;
  413.    
  414.     for (i = 0; i < MAX_VIEWPORTS; i++) {
  415.         if (!viewports[i].initialized)
  416.             break;
  417.     }
  418.     if (i == MAX_VIEWPORTS)
  419.         return ELIMIT;
  420.    
  421.     unsigned int cols = width / FONT_WIDTH;
  422.     unsigned int rows = height / FONT_SCANLINES;
  423.     unsigned int bbsize = cols * rows;
  424.     unsigned int glyphsize = 2 * FONT_GLYPHS * screen.glyphbytes;
  425.    
  426.     uint8_t *backbuf = (uint8_t *) malloc(bbsize);
  427.     if (!backbuf)
  428.         return ENOMEM;
  429.    
  430.     uint8_t *glyphs = (uint8_t *) malloc(glyphsize);
  431.     if (!glyphs) {
  432.         free(backbuf);
  433.         return ENOMEM;
  434.     }
  435.    
  436.     uint8_t *bgpixel = (uint8_t *) malloc(screen.pixelbytes);
  437.     if (!bgpixel) {
  438.         free(glyphs);
  439.         free(backbuf);
  440.         return ENOMEM;
  441.     }
  442.    
  443.     memset(backbuf, 0, bbsize);
  444.     memset(glyphs, 0, glyphsize);
  445.     memset(bgpixel, 0, screen.pixelbytes);
  446.    
  447.     viewports[i].x = x;
  448.     viewports[i].y = y;
  449.     viewports[i].width = width;
  450.     viewports[i].height = height;
  451.    
  452.     viewports[i].cols = cols;
  453.     viewports[i].rows = rows;
  454.    
  455.     viewports[i].style.bg_color = DEFAULT_BGCOLOR;
  456.     viewports[i].style.fg_color = DEFAULT_FGCOLOR;
  457.    
  458.     viewports[i].glyphs = glyphs;
  459.     viewports[i].bgpixel = bgpixel;
  460.    
  461.     viewports[i].cur_col = 0;
  462.     viewports[i].cur_row = 0;
  463.     viewports[i].cursor_active = false;
  464.     viewports[i].cursor_shown = false;
  465.    
  466.     viewports[i].bbsize = bbsize;
  467.     viewports[i].backbuf = backbuf;
  468.    
  469.     viewports[i].initialized = true;
  470.    
  471.     render_glyphs(&viewports[i]);
  472.    
  473.     return i;
  474. }
  475.  
  476.  
  477. /** Initialize framebuffer as a chardev output device
  478.  *
  479.  * @param addr   Address of the framebuffer
  480.  * @param xres   Screen width in pixels
  481.  * @param yres   Screen height in pixels
  482.  * @param visual Bits per pixel (8, 16, 24, 32)
  483.  * @param scan   Bytes per one scanline
  484.  *
  485.  */
  486. static bool screen_init(void *addr, unsigned int xres, unsigned int yres,
  487.     unsigned int scan, unsigned int visual)
  488. {
  489.     switch (visual) {
  490.     case VISUAL_INDIRECT_8:
  491.         screen.rgb_conv = rgb_323;
  492.         screen.pixelbytes = 1;
  493.         break;
  494.     case VISUAL_RGB_5_5_5:
  495.         screen.rgb_conv = rgb_555;
  496.         screen.pixelbytes = 2;
  497.         break;
  498.     case VISUAL_RGB_5_6_5:
  499.         screen.rgb_conv = rgb_565;
  500.         screen.pixelbytes = 2;
  501.         break;
  502.     case VISUAL_RGB_8_8_8:
  503.         screen.rgb_conv = rgb_888;
  504.         screen.pixelbytes = 3;
  505.         break;
  506.     case VISUAL_RGB_8_8_8_0:
  507.         screen.rgb_conv = rgb_888;
  508.         screen.pixelbytes = 4;
  509.         break;
  510.     case VISUAL_RGB_0_8_8_8:
  511.         screen.rgb_conv = rgb_0888;
  512.         screen.pixelbytes = 4;
  513.         break;
  514.     case VISUAL_BGR_0_8_8_8:
  515.         screen.rgb_conv = bgr_0888;
  516.         screen.pixelbytes = 4;
  517.         break;
  518.     default:
  519.         return false;
  520.     }
  521.  
  522.     screen.fb_addr = (unsigned char *) addr;
  523.     screen.xres = xres;
  524.     screen.yres = yres;
  525.     screen.scanline = scan;
  526.    
  527.     screen.glyphscanline = FONT_WIDTH * screen.pixelbytes;
  528.     screen.glyphbytes = screen.glyphscanline * FONT_SCANLINES;
  529.    
  530.     /* Create first viewport */
  531.     vport_create(0, 0, xres, yres);
  532.    
  533.     return true;
  534. }
  535.  
  536.  
  537. /** Draw a glyph.
  538.  *
  539.  * @param x  x coordinate of top-left corner on screen.
  540.  * @param y  y coordinate of top-left corner on screen.
  541.  * @param cursor Draw glyph with cursor
  542.  * @param glyphs Pointer to font bitmap.
  543.  * @param glyph  Code of the glyph to draw.
  544.  *
  545.  */
  546. static void draw_glyph(unsigned int x, unsigned int y, bool cursor,
  547.     uint8_t *glyphs, uint8_t glyph)
  548. {
  549.     unsigned int yd;
  550.    
  551.     for (yd = 0; yd < FONT_SCANLINES; yd++)
  552.         memcpy(&screen.fb_addr[FB_POS(x, y + yd)],
  553.             &glyphs[GLYPH_POS(glyph, yd, cursor)], screen.glyphscanline);
  554. }
  555.  
  556. /** Draw glyph at specified position in viewport.
  557.  *
  558.  * @param vport  Viewport identification
  559.  * @param cursor Draw glyph with cursor
  560.  * @param col    Screen position relative to viewport
  561.  * @param row    Screen position relative to viewport
  562.  *
  563.  */
  564. static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
  565.     unsigned int row)
  566. {
  567.     unsigned int x = vport->x + COL2X(col);
  568.     unsigned int y = vport->y + ROW2Y(row);
  569.     uint8_t glyph;
  570.    
  571.     glyph = vport->backbuf[BB_POS(vport, col, row)];
  572.     draw_glyph(x, y, cursor, vport->glyphs, glyph);
  573. }
  574.  
  575.  
  576. /** Hide cursor if it is shown
  577.  *
  578.  */
  579. static void cursor_hide(viewport_t *vport)
  580. {
  581.     if ((vport->cursor_active) && (vport->cursor_shown)) {
  582.         draw_vp_glyph(vport, false, vport->cur_col, vport->cur_row);
  583.         vport->cursor_shown = false;
  584.     }
  585. }
  586.  
  587.  
  588. /** Show cursor if cursor showing is enabled
  589.  *
  590.  */
  591. static void cursor_show(viewport_t *vport)
  592. {
  593.     /* Do not check for cursor_shown */
  594.     if (vport->cursor_active) {
  595.         draw_vp_glyph(vport, true, vport->cur_col, vport->cur_row);
  596.         vport->cursor_shown = true;
  597.     }
  598. }
  599.  
  600.  
  601. /** Invert cursor, if it is enabled
  602.  *
  603.  */
  604. static void cursor_blink(viewport_t *vport)
  605. {
  606.     if (vport->cursor_shown)
  607.         cursor_hide(vport);
  608.     else
  609.         cursor_show(vport);
  610. }
  611.  
  612.  
  613. /** Draw character at given position relative to viewport
  614.  *
  615.  * @param vport  Viewport identification
  616.  * @param c      Character to draw
  617.  * @param col    Screen position relative to viewport
  618.  * @param row    Screen position relative to viewport
  619.  *
  620.  */
  621. static void draw_char(viewport_t *vport, uint8_t c, unsigned int col, unsigned int row)
  622. {
  623.     /* Do not hide cursor if we are going to overwrite it */
  624.     if ((vport->cursor_active) && (vport->cursor_shown) &&
  625.         ((vport->cur_col != col) || (vport->cur_row != row)))
  626.         cursor_hide(vport);
  627.    
  628.     vport->backbuf[BB_POS(vport, col, row)] = c;
  629.     draw_vp_glyph(vport, false, col, row);
  630.    
  631.     vport->cur_col = col;
  632.     vport->cur_row = row;
  633.    
  634.     vport->cur_col++;
  635.     if (vport->cur_col >= vport->cols) {
  636.         vport->cur_col = 0;
  637.         vport->cur_row++;
  638.         if (vport->cur_row >= vport->rows)
  639.             vport->cur_row--;
  640.     }
  641.    
  642.     cursor_show(vport);
  643. }
  644.  
  645.  
  646. /** Draw text data to viewport
  647.  *
  648.  * @param vport Viewport id
  649.  * @param data  Text data fitting exactly into viewport
  650.  *
  651.  */
  652. static void draw_text_data(viewport_t *vport, keyfield_t *data)
  653. {
  654.     unsigned int i;
  655.    
  656.     for (i = 0; i < vport->cols * vport->rows; i++) {
  657.         unsigned int col = i % vport->cols;
  658.         unsigned int row = i / vport->cols;
  659.        
  660.         uint8_t glyph = vport->backbuf[BB_POS(vport, col, row)];
  661.        
  662.         // TODO: use data[i].style
  663.        
  664.         if (glyph != data[i].character) {
  665.             vport->backbuf[BB_POS(vport, col, row)] = data[i].character;
  666.             draw_vp_glyph(vport, false, col, row);
  667.         }
  668.     }
  669.     cursor_show(vport);
  670. }
  671.  
  672.  
  673. static void putpixel_pixmap(void *data, unsigned int x, unsigned int y, uint32_t color)
  674. {
  675.     int pm = *((int *) data);
  676.     pixmap_t *pmap = &pixmaps[pm];
  677.     unsigned int pos = (y * pmap->width + x) * screen.pixelbytes;
  678.    
  679.     screen.rgb_conv(&pmap->data[pos], color);
  680. }
  681.  
  682.  
  683. static void putpixel(void *data, unsigned int x, unsigned int y, uint32_t color)
  684. {
  685.     viewport_t *vport = (viewport_t *) data;
  686.     unsigned int dx = vport->x + x;
  687.     unsigned int dy = vport->y + y;
  688.    
  689.     screen.rgb_conv(&screen.fb_addr[FB_POS(dx, dy)], color);
  690. }
  691.  
  692.  
  693. /** Return first free pixmap
  694.  *
  695.  */
  696. static int find_free_pixmap(void)
  697. {
  698.     unsigned int i;
  699.    
  700.     for (i = 0; i < MAX_PIXMAPS; i++)
  701.         if (!pixmaps[i].data)
  702.             return i;
  703.    
  704.     return -1;
  705. }
  706.  
  707.  
  708. /** Create a new pixmap and return appropriate ID
  709.  *
  710.  */
  711. static int shm2pixmap(unsigned char *shm, size_t size)
  712. {
  713.     int pm;
  714.     pixmap_t *pmap;
  715.    
  716.     pm = find_free_pixmap();
  717.     if (pm == -1)
  718.         return ELIMIT;
  719.    
  720.     pmap = &pixmaps[pm];
  721.    
  722.     if (ppm_get_data(shm, size, &pmap->width, &pmap->height))
  723.         return EINVAL;
  724.    
  725.     pmap->data = malloc(pmap->width * pmap->height * screen.pixelbytes);
  726.     if (!pmap->data)
  727.         return ENOMEM;
  728.    
  729.     ppm_draw(shm, size, 0, 0, pmap->width, pmap->height, putpixel_pixmap, (void *) &pm);
  730.    
  731.     return pm;
  732. }
  733.  
  734.  
  735. /** Handle shared memory communication calls
  736.  *
  737.  * Protocol for drawing pixmaps:
  738.  * - FB_PREPARE_SHM(client shm identification)
  739.  * - IPC_M_AS_AREA_SEND
  740.  * - FB_DRAW_PPM(startx, starty)
  741.  * - FB_DROP_SHM
  742.  *
  743.  * Protocol for text drawing
  744.  * - IPC_M_AS_AREA_SEND
  745.  * - FB_DRAW_TEXT_DATA
  746.  *
  747.  * @param callid Callid of the current call
  748.  * @param call   Current call data
  749.  * @param vp     Active viewport
  750.  *
  751.  * @return false if the call was not handled byt this function, true otherwise
  752.  *
  753.  * Note: this function is not threads safe, you would have
  754.  * to redefine static variables with __thread
  755.  *
  756.  */
  757. static bool shm_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  758. {
  759.     static keyfield_t *interbuffer = NULL;
  760.     static size_t intersize = 0;
  761.    
  762.     static unsigned char *shm = NULL;
  763.     static ipcarg_t shm_id = 0;
  764.     static size_t shm_size;
  765.    
  766.     bool handled = true;
  767.     int retval = EOK;
  768.     viewport_t *vport = &viewports[vp];
  769.     unsigned int x;
  770.     unsigned int y;
  771.    
  772.     switch (IPC_GET_METHOD(*call)) {
  773.     case IPC_M_SHARE_OUT:
  774.         /* We accept one area for data interchange */
  775.         if (IPC_GET_ARG1(*call) == shm_id) {
  776.             void *dest = as_get_mappable_page(IPC_GET_ARG2(*call));
  777.             shm_size = IPC_GET_ARG2(*call);
  778.             if (!ipc_answer_1(callid, EOK, (sysarg_t) dest))
  779.                 shm = dest;
  780.             else
  781.                 shm_id = 0;
  782.            
  783.             if (shm[0] != 'P')
  784.                 return false;
  785.            
  786.             return true;
  787.         } else {
  788.             intersize = IPC_GET_ARG2(*call);
  789.             receive_comm_area(callid, call, (void *) &interbuffer);
  790.         }
  791.         return true;
  792.     case FB_PREPARE_SHM:
  793.         if (shm_id)
  794.             retval = EBUSY;
  795.         else
  796.             shm_id = IPC_GET_ARG1(*call);
  797.         break;
  798.        
  799.     case FB_DROP_SHM:
  800.         if (shm) {
  801.             as_area_destroy(shm);
  802.             shm = NULL;
  803.         }
  804.         shm_id = 0;
  805.         break;
  806.        
  807.     case FB_SHM2PIXMAP:
  808.         if (!shm) {
  809.             retval = EINVAL;
  810.             break;
  811.         }
  812.         retval = shm2pixmap(shm, shm_size);
  813.         break;
  814.     case FB_DRAW_PPM:
  815.         if (!shm) {
  816.             retval = EINVAL;
  817.             break;
  818.         }
  819.         x = IPC_GET_ARG1(*call);
  820.         y = IPC_GET_ARG2(*call);
  821.        
  822.         if ((x > vport->width) || (y > vport->height)) {
  823.             retval = EINVAL;
  824.             break;
  825.         }
  826.        
  827.         ppm_draw(shm, shm_size, IPC_GET_ARG1(*call),
  828.             IPC_GET_ARG2(*call), vport->width - x, vport->height - y, putpixel, (void *) vport);
  829.         break;
  830.     case FB_DRAW_TEXT_DATA:
  831.         if (!interbuffer) {
  832.             retval = EINVAL;
  833.             break;
  834.         }
  835.         if (intersize < vport->cols * vport->rows * sizeof(*interbuffer)) {
  836.             retval = EINVAL;
  837.             break;
  838.         }
  839.         draw_text_data(vport, interbuffer);
  840.         break;
  841.     default:
  842.         handled = false;
  843.     }
  844.    
  845.     if (handled)
  846.         ipc_answer_0(callid, retval);
  847.     return handled;
  848. }
  849.  
  850.  
  851. static void copy_vp_to_pixmap(viewport_t *vport, pixmap_t *pmap)
  852. {
  853.     unsigned int width = vport->width;
  854.     unsigned int height = vport->height;
  855.    
  856.     if (width + vport->x > screen.xres)
  857.         width = screen.xres - vport->x;
  858.     if (height + vport->y > screen.yres)
  859.         height = screen.yres - vport->y;
  860.    
  861.     unsigned int realwidth = pmap->width <= width ? pmap->width : width;
  862.     unsigned int realheight = pmap->height <= height ? pmap->height : height;
  863.    
  864.     unsigned int srcrowsize = vport->width * screen.pixelbytes;
  865.     unsigned int realrowsize = realwidth * screen.pixelbytes;
  866.    
  867.     unsigned int y;
  868.     for (y = 0; y < realheight; y++) {
  869.         unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
  870.         memcpy(pmap->data + srcrowsize * y, screen.fb_addr + tmp, realrowsize);
  871.     }
  872. }
  873.  
  874.  
  875. /** Save viewport to pixmap
  876.  *
  877.  */
  878. static int save_vp_to_pixmap(viewport_t *vport)
  879. {
  880.     int pm;
  881.     pixmap_t *pmap;
  882.    
  883.     pm = find_free_pixmap();
  884.     if (pm == -1)
  885.         return ELIMIT;
  886.    
  887.     pmap = &pixmaps[pm];
  888.     pmap->data = malloc(screen.pixelbytes * vport->width * vport->height);
  889.     if (!pmap->data)
  890.         return ENOMEM;
  891.    
  892.     pmap->width = vport->width;
  893.     pmap->height = vport->height;
  894.    
  895.     copy_vp_to_pixmap(vport, pmap);
  896.    
  897.     return pm;
  898. }
  899.  
  900.  
  901. /** Draw pixmap on screen
  902.  *
  903.  * @param vp Viewport to draw on
  904.  * @param pm Pixmap identifier
  905.  *
  906.  */
  907. static int draw_pixmap(int vp, int pm)
  908. {
  909.     pixmap_t *pmap = &pixmaps[pm];
  910.     viewport_t *vport = &viewports[vp];
  911.    
  912.     unsigned int width = vport->width;
  913.     unsigned int height = vport->height;
  914.    
  915.     if (width + vport->x > screen.xres)
  916.         width = screen.xres - vport->x;
  917.     if (height + vport->y > screen.yres)
  918.         height = screen.yres - vport->y;
  919.    
  920.     if (!pmap->data)
  921.         return EINVAL;
  922.    
  923.     unsigned int realwidth = pmap->width <= width ? pmap->width : width;
  924.     unsigned int realheight = pmap->height <= height ? pmap->height : height;
  925.    
  926.     unsigned int srcrowsize = vport->width * screen.pixelbytes;
  927.     unsigned int realrowsize = realwidth * screen.pixelbytes;
  928.    
  929.     unsigned int y;
  930.     for (y = 0; y < realheight; y++) {
  931.         unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
  932.         memcpy(screen.fb_addr + tmp, pmap->data + y * srcrowsize, realrowsize);
  933.     }
  934.    
  935.     return EOK;
  936. }
  937.  
  938.  
  939. /** Tick animation one step forward
  940.  *
  941.  */
  942. static void anims_tick(void)
  943. {
  944.     unsigned int i;
  945.     static int counts = 0;
  946.    
  947.     /* Limit redrawing */
  948.     counts = (counts + 1) % 8;
  949.     if (counts)
  950.         return;
  951.  
  952.     for (i = 0; i < MAX_ANIMATIONS; i++) {
  953.         if ((!animations[i].animlen) || (!animations[i].initialized) ||
  954.             (!animations[i].enabled))
  955.             continue;
  956.        
  957.         draw_pixmap(animations[i].vp, animations[i].pixmaps[animations[i].pos]);
  958.         animations[i].pos = (animations[i].pos + 1) % animations[i].animlen;
  959.     }
  960. }
  961.  
  962.  
  963. static unsigned int pointer_x;
  964. static unsigned int pointer_y;
  965. static bool pointer_shown, pointer_enabled;
  966. static int pointer_vport = -1;
  967. static int pointer_pixmap = -1;
  968.  
  969.  
  970. static void mouse_show(void)
  971. {
  972.     int i, j;
  973.     int visibility;
  974.     int color;
  975.     int bytepos;
  976.    
  977.     if ((pointer_shown) || (!pointer_enabled))
  978.         return;
  979.    
  980.     /* Save image under the pointer. */
  981.     if (pointer_vport == -1) {
  982.         pointer_vport = vport_create(pointer_x, pointer_y, pointer_width, pointer_height);
  983.         if (pointer_vport < 0)
  984.             return;
  985.     } else {
  986.         viewports[pointer_vport].x = pointer_x;
  987.         viewports[pointer_vport].y = pointer_y;
  988.     }
  989.    
  990.     if (pointer_pixmap == -1)
  991.         pointer_pixmap = save_vp_to_pixmap(&viewports[pointer_vport]);
  992.     else
  993.         copy_vp_to_pixmap(&viewports[pointer_vport], &pixmaps[pointer_pixmap]);
  994.    
  995.     /* Draw mouse pointer. */
  996.     for (i = 0; i < pointer_height; i++)
  997.         for (j = 0; j < pointer_width; j++) {
  998.             bytepos = i * ((pointer_width - 1) / 8 + 1) + j / 8;
  999.             visibility = pointer_mask_bits[bytepos] &
  1000.                 (1 << (j % 8));
  1001.             if (visibility) {
  1002.                 color = pointer_bits[bytepos] &
  1003.                     (1 << (j % 8)) ? 0 : 0xffffff;
  1004.                 if (pointer_x + j < screen.xres && pointer_y +
  1005.                     i < screen.yres)
  1006.                     putpixel(&viewports[0], pointer_x + j,
  1007.                         pointer_y + i, color);
  1008.             }
  1009.         }
  1010.     pointer_shown = 1;
  1011. }
  1012.  
  1013.  
  1014. static void mouse_hide(void)
  1015. {
  1016.     /* Restore image under the pointer. */
  1017.     if (pointer_shown) {
  1018.         draw_pixmap(pointer_vport, pointer_pixmap);
  1019.         pointer_shown = 0;
  1020.     }
  1021. }
  1022.  
  1023.  
  1024. static void mouse_move(unsigned int x, unsigned int y)
  1025. {
  1026.     mouse_hide();
  1027.     pointer_x = x;
  1028.     pointer_y = y;
  1029.     mouse_show();
  1030. }
  1031.  
  1032.  
  1033. static int anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  1034. {
  1035.     bool handled = true;
  1036.     int retval = EOK;
  1037.     int i, nvp;
  1038.     int newval;
  1039.    
  1040.     switch (IPC_GET_METHOD(*call)) {
  1041.     case FB_ANIM_CREATE:
  1042.         nvp = IPC_GET_ARG1(*call);
  1043.         if (nvp == -1)
  1044.             nvp = vp;
  1045.         if (nvp >= MAX_VIEWPORTS || nvp < 0 ||
  1046.             !viewports[nvp].initialized) {
  1047.             retval = EINVAL;
  1048.             break;
  1049.         }
  1050.         for (i = 0; i < MAX_ANIMATIONS; i++) {
  1051.             if (!animations[i].initialized)
  1052.                 break;
  1053.         }
  1054.         if (i == MAX_ANIMATIONS) {
  1055.             retval = ELIMIT;
  1056.             break;
  1057.         }
  1058.         animations[i].initialized = 1;
  1059.         animations[i].animlen = 0;
  1060.         animations[i].pos = 0;
  1061.         animations[i].enabled = 0;
  1062.         animations[i].vp = nvp;
  1063.         retval = i;
  1064.         break;
  1065.     case FB_ANIM_DROP:
  1066.         i = IPC_GET_ARG1(*call);
  1067.         if (i >= MAX_ANIMATIONS || i < 0) {
  1068.             retval = EINVAL;
  1069.             break;
  1070.         }
  1071.         animations[i].initialized = 0;
  1072.         break;
  1073.     case FB_ANIM_ADDPIXMAP:
  1074.         i = IPC_GET_ARG1(*call);
  1075.         if (i >= MAX_ANIMATIONS || i < 0 ||
  1076.             !animations[i].initialized) {
  1077.             retval = EINVAL;
  1078.             break;
  1079.         }
  1080.         if (animations[i].animlen == MAX_ANIM_LEN) {
  1081.             retval = ELIMIT;
  1082.             break;
  1083.         }
  1084.         newval = IPC_GET_ARG2(*call);
  1085.         if (newval < 0 || newval > MAX_PIXMAPS ||
  1086.             !pixmaps[newval].data) {
  1087.             retval = EINVAL;
  1088.             break;
  1089.         }
  1090.         animations[i].pixmaps[animations[i].animlen++] = newval;
  1091.         break;
  1092.     case FB_ANIM_CHGVP:
  1093.         i = IPC_GET_ARG1(*call);
  1094.         if (i >= MAX_ANIMATIONS || i < 0) {
  1095.             retval = EINVAL;
  1096.             break;
  1097.         }
  1098.         nvp = IPC_GET_ARG2(*call);
  1099.         if (nvp == -1)
  1100.             nvp = vp;
  1101.         if (nvp >= MAX_VIEWPORTS || nvp < 0 ||
  1102.             !viewports[nvp].initialized) {
  1103.             retval = EINVAL;
  1104.             break;
  1105.         }
  1106.         animations[i].vp = nvp;
  1107.         break;
  1108.     case FB_ANIM_START:
  1109.     case FB_ANIM_STOP:
  1110.         i = IPC_GET_ARG1(*call);
  1111.         if (i >= MAX_ANIMATIONS || i < 0) {
  1112.             retval = EINVAL;
  1113.             break;
  1114.         }
  1115.         newval = (IPC_GET_METHOD(*call) == FB_ANIM_START);
  1116.         if (newval ^ animations[i].enabled) {
  1117.             animations[i].enabled = newval;
  1118.             anims_enabled += newval ? 1 : -1;
  1119.         }
  1120.         break;
  1121.     default:
  1122.         handled = 0;
  1123.     }
  1124.     if (handled)
  1125.         ipc_answer_0(callid, retval);
  1126.     return handled;
  1127. }
  1128.  
  1129.  
  1130. /** Handler for messages concerning pixmap handling
  1131.  *
  1132.  */
  1133. static int pixmap_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  1134. {
  1135.     bool handled = true;
  1136.     int retval = EOK;
  1137.     int i, nvp;
  1138.    
  1139.     switch (IPC_GET_METHOD(*call)) {
  1140.     case FB_VP_DRAW_PIXMAP:
  1141.         nvp = IPC_GET_ARG1(*call);
  1142.         if (nvp == -1)
  1143.             nvp = vp;
  1144.         if (nvp < 0 || nvp >= MAX_VIEWPORTS ||
  1145.             !viewports[nvp].initialized) {
  1146.             retval = EINVAL;
  1147.             break;
  1148.         }
  1149.         i = IPC_GET_ARG2(*call);
  1150.         retval = draw_pixmap(nvp, i);
  1151.         break;
  1152.     case FB_VP2PIXMAP:
  1153.         nvp = IPC_GET_ARG1(*call);
  1154.         if (nvp == -1)
  1155.             nvp = vp;
  1156.         if (nvp < 0 || nvp >= MAX_VIEWPORTS ||
  1157.             !viewports[nvp].initialized)
  1158.             retval = EINVAL;
  1159.         else
  1160.             retval = save_vp_to_pixmap(&viewports[nvp]);
  1161.         break;
  1162.     case FB_DROP_PIXMAP:
  1163.         i = IPC_GET_ARG1(*call);
  1164.         if (i >= MAX_PIXMAPS) {
  1165.             retval = EINVAL;
  1166.             break;
  1167.         }
  1168.         if (pixmaps[i].data) {
  1169.             free(pixmaps[i].data);
  1170.             pixmaps[i].data = NULL;
  1171.         }
  1172.         break;
  1173.     default:
  1174.         handled = 0;
  1175.     }
  1176.    
  1177.     if (handled)
  1178.         ipc_answer_0(callid, retval);
  1179.     return handled;
  1180.    
  1181. }
  1182.  
  1183. /** Function for handling connections to FB
  1184.  *
  1185.  */
  1186. static void fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
  1187. {
  1188.     unsigned int vp = 0;
  1189.     viewport_t *vport = &viewports[vp];
  1190.    
  1191.     if (client_connected) {
  1192.         ipc_answer_0(iid, ELIMIT);
  1193.         return;
  1194.     }
  1195.    
  1196.     /* Accept connection */
  1197.     client_connected = true;
  1198.     ipc_answer_0(iid, EOK);
  1199.    
  1200.     while (true) {
  1201.         ipc_callid_t callid;
  1202.         ipc_call_t call;
  1203.         int retval;
  1204.         unsigned int i;
  1205.         int scroll;
  1206.         uint8_t glyph;
  1207.         unsigned int row, col;
  1208.        
  1209.         if ((vport->cursor_active) || (anims_enabled))
  1210.             callid = async_get_call_timeout(&call, 250000);
  1211.         else
  1212.             callid = async_get_call(&call);
  1213.        
  1214.         mouse_hide();
  1215.         if (!callid) {
  1216.             cursor_blink(vport);
  1217.             anims_tick();
  1218.             mouse_show();
  1219.             continue;
  1220.         }
  1221.        
  1222.         if (shm_handle(callid, &call, vp))
  1223.             continue;
  1224.        
  1225.         if (pixmap_handle(callid, &call, vp))
  1226.             continue;
  1227.        
  1228.         if (anim_handle(callid, &call, vp))
  1229.             continue;
  1230.        
  1231.         switch (IPC_GET_METHOD(call)) {
  1232.         case IPC_M_PHONE_HUNGUP:
  1233.             client_connected = false;
  1234.            
  1235.             /* Cleanup other viewports */
  1236.             for (i = 1; i < MAX_VIEWPORTS; i++)
  1237.                 vport->initialized = false;
  1238.            
  1239.             /* Exit thread */
  1240.             return;
  1241.        
  1242.         case FB_PUTCHAR:
  1243.             glyph = IPC_GET_ARG1(call);
  1244.             row = IPC_GET_ARG2(call);
  1245.             col = IPC_GET_ARG3(call);
  1246.            
  1247.             if ((col >= vport->cols) || (row >= vport->rows)) {
  1248.                 retval = EINVAL;
  1249.                 break;
  1250.             }
  1251.             ipc_answer_0(callid, EOK);
  1252.            
  1253.             draw_char(vport, glyph, col, row);
  1254.            
  1255.             /* Message already answered */
  1256.             continue;
  1257.         case FB_CLEAR:
  1258.             vport_clear(vport);
  1259.             cursor_show(vport);
  1260.             retval = EOK;
  1261.             break;
  1262.         case FB_CURSOR_GOTO:
  1263.             row = IPC_GET_ARG1(call);
  1264.             col = IPC_GET_ARG2(call);
  1265.            
  1266.             if ((col >= vport->cols) || (row >= vport->rows)) {
  1267.                 retval = EINVAL;
  1268.                 break;
  1269.             }
  1270.             retval = EOK;
  1271.            
  1272.             cursor_hide(vport);
  1273.             vport->cur_col = col;
  1274.             vport->cur_row = row;
  1275.             cursor_show(vport);
  1276.             break;
  1277.         case FB_CURSOR_VISIBILITY:
  1278.             cursor_hide(vport);
  1279.             vport->cursor_active = IPC_GET_ARG1(call);
  1280.             cursor_show(vport);
  1281.             retval = EOK;
  1282.             break;
  1283.         case FB_GET_CSIZE:
  1284.             ipc_answer_2(callid, EOK, vport->rows, vport->cols);
  1285.             continue;
  1286.         case FB_SCROLL:
  1287.             scroll = IPC_GET_ARG1(call);
  1288.             if ((scroll > (int) vport->rows) || (scroll < (-(int) vport->rows))) {
  1289.                 retval = EINVAL;
  1290.                 break;
  1291.             }
  1292.             cursor_hide(vport);
  1293.             vport_scroll(vport, scroll);
  1294.             cursor_show(vport);
  1295.             retval = EOK;
  1296.             break;
  1297.         case FB_VIEWPORT_SWITCH:
  1298.             i = IPC_GET_ARG1(call);
  1299.             if (i >= MAX_VIEWPORTS) {
  1300.                 retval = EINVAL;
  1301.                 break;
  1302.             }
  1303.             if (!viewports[i].initialized) {
  1304.                 retval = EADDRNOTAVAIL;
  1305.                 break;
  1306.             }
  1307.             cursor_hide(vport);
  1308.             vp = i;
  1309.             vport = &viewports[vp];
  1310.             cursor_show(vport);
  1311.             retval = EOK;
  1312.             break;
  1313.         case FB_VIEWPORT_CREATE:
  1314.             retval = vport_create(IPC_GET_ARG1(call) >> 16,
  1315.                 IPC_GET_ARG1(call) & 0xffff,
  1316.                 IPC_GET_ARG2(call) >> 16,
  1317.                 IPC_GET_ARG2(call) & 0xffff);
  1318.             break;
  1319.         case FB_VIEWPORT_DELETE:
  1320.             i = IPC_GET_ARG1(call);
  1321.             if (i >= MAX_VIEWPORTS) {
  1322.                 retval = EINVAL;
  1323.                 break;
  1324.             }
  1325.             if (!viewports[i].initialized) {
  1326.                 retval = EADDRNOTAVAIL;
  1327.                 break;
  1328.             }
  1329.             viewports[i].initialized = false;
  1330.             if (viewports[i].glyphs)
  1331.                 free(viewports[i].glyphs);
  1332.             if (viewports[i].bgpixel)
  1333.                 free(viewports[i].bgpixel);
  1334.             if (viewports[i].backbuf)
  1335.                 free(viewports[i].backbuf);
  1336.             retval = EOK;
  1337.             break;
  1338.         case FB_SET_STYLE:
  1339.             vport->style.fg_color = IPC_GET_ARG1(call);
  1340.             vport->style.bg_color = IPC_GET_ARG2(call);
  1341.             render_glyphs(vport);
  1342.             retval = EOK;
  1343.             break;
  1344.         case FB_GET_RESOLUTION:
  1345.             ipc_answer_2(callid, EOK, screen.xres, screen.yres);
  1346.             continue;
  1347.         case FB_POINTER_MOVE:
  1348.             pointer_enabled = true;
  1349.             mouse_move(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
  1350.             retval = EOK;
  1351.             break;
  1352.         default:
  1353.             retval = ENOENT;
  1354.         }
  1355.         ipc_answer_0(callid, retval);
  1356.     }
  1357. }
  1358.  
  1359. /** Initialization of framebuffer
  1360.  *
  1361.  */
  1362. int fb_init(void)
  1363. {
  1364.     async_set_client_connection(fb_client_connection);
  1365.    
  1366.     void *fb_ph_addr = (void *) sysinfo_value("fb.address.physical");
  1367.     unsigned int fb_offset = sysinfo_value("fb.offset");
  1368.     unsigned int fb_width = sysinfo_value("fb.width");
  1369.     unsigned int fb_height = sysinfo_value("fb.height");
  1370.     unsigned int fb_scanline = sysinfo_value("fb.scanline");
  1371.     unsigned int fb_visual = sysinfo_value("fb.visual");
  1372.    
  1373.     unsigned int fbsize = fb_scanline * fb_height;
  1374.     void *fb_addr = as_get_mappable_page(fbsize);
  1375.    
  1376.     physmem_map(fb_ph_addr + fb_offset, fb_addr,
  1377.         ALIGN_UP(fbsize, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE);
  1378.    
  1379.     if (screen_init(fb_addr, fb_width, fb_height, fb_scanline, fb_visual))
  1380.         return 0;
  1381.    
  1382.     return -1;
  1383. }
  1384.  
  1385. /**
  1386.  * @}
  1387.  */
  1388.