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  1. /*
  2.  * Copyright (c) 2006 Jakub Vana
  3.  * Copyright (c) 2006 Ondrej Palkovsky
  4.  * All rights reserved.
  5.  *
  6.  * Redistribution and use in source and binary forms, with or without
  7.  * modification, are permitted provided that the following conditions
  8.  * are met:
  9.  *
  10.  * - Redistributions of source code must retain the above copyright
  11.  *   notice, this list of conditions and the following disclaimer.
  12.  * - Redistributions in binary form must reproduce the above copyright
  13.  *   notice, this list of conditions and the following disclaimer in the
  14.  *   documentation and/or other materials provided with the distribution.
  15.  * - The name of the author may not be used to endorse or promote products
  16.  *   derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28.  */
  29.  
  30. /**
  31.  * @defgroup fb Graphical framebuffer
  32.  * @brief   HelenOS graphical framebuffer.
  33.  * @ingroup fbs
  34.  * @{
  35.  */
  36.  
  37. /** @file
  38.  */
  39.  
  40. #include <stdlib.h>
  41. #include <unistd.h>
  42. #include <string.h>
  43. #include <ddi.h>
  44. #include <sysinfo.h>
  45. #include <align.h>
  46. #include <as.h>
  47. #include <ipc/fb.h>
  48. #include <ipc/ipc.h>
  49. #include <ipc/ns.h>
  50. #include <ipc/services.h>
  51. #include <kernel/errno.h>
  52. #include <kernel/genarch/fb/visuals.h>
  53. #include <async.h>
  54. #include <bool.h>
  55.  
  56. #include "font-8x16.h"
  57. #include "fb.h"
  58. #include "main.h"
  59. #include "../console/screenbuffer.h"
  60. #include "ppm.h"
  61.  
  62. #include "pointer.xbm"
  63. #include "pointer_mask.xbm"
  64.  
  65. #define DEFAULT_BGCOLOR                0xf0f0f0
  66. #define DEFAULT_FGCOLOR                0x0
  67.  
  68. /***************************************************************/
  69. /* Pixel specific fuctions */
  70.  
  71. typedef void (*conv2scr_fn_t)(void *, int);
  72. typedef int (*conv2rgb_fn_t)(void *);
  73.  
  74. struct {
  75.     uint8_t *fbaddress;
  76.  
  77.     unsigned int xres;
  78.     unsigned int yres;
  79.     unsigned int scanline;
  80.     unsigned int pixelbytes;
  81.     unsigned int invert_colors;
  82.  
  83.     conv2scr_fn_t rgb2scr;
  84.     conv2rgb_fn_t scr2rgb;
  85. } screen;
  86.  
  87. typedef struct {
  88.     int initialized;
  89.     unsigned int x, y;
  90.     unsigned int width, height;
  91.  
  92.     /* Text support in window */
  93.     unsigned int rows, cols;
  94.     /* Style for text printing */
  95.     style_t style;
  96.     /* Auto-cursor position */
  97.     int cursor_active, cur_col, cur_row;
  98.     int cursor_shown;
  99.     /* Double buffering */
  100.     uint8_t *dbdata;
  101.     unsigned int dboffset;
  102.     unsigned int paused;
  103. } viewport_t;
  104.  
  105. #define MAX_ANIM_LEN    8
  106. #define MAX_ANIMATIONS  4
  107. typedef struct {
  108.     int initialized;
  109.     int enabled;
  110.     unsigned int vp;
  111.  
  112.     unsigned int pos;
  113.     unsigned int animlen;
  114.     unsigned int pixmaps[MAX_ANIM_LEN];
  115. } animation_t;
  116. static animation_t animations[MAX_ANIMATIONS];
  117. static int anims_enabled;
  118.  
  119. /** Maximum number of saved pixmaps
  120.  * Pixmap is a saved rectangle
  121.  */
  122. #define MAX_PIXMAPS        256
  123. typedef struct {
  124.     unsigned int width;
  125.     unsigned int height;
  126.     uint8_t *data;
  127. } pixmap_t;
  128. static pixmap_t pixmaps[MAX_PIXMAPS];
  129.  
  130. /* Viewport is a rectangular area on the screen */
  131. #define MAX_VIEWPORTS 128
  132. static viewport_t viewports[128];
  133.  
  134. /* Allow only 1 connection */
  135. static int client_connected = 0;
  136.  
  137. #define RED(x, bits)    ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))
  138. #define GREEN(x, bits)  ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
  139. #define BLUE(x, bits)   ((x >> (8 - bits)) & ((1 << bits) - 1))
  140.  
  141. #define COL_WIDTH   8
  142. #define ROW_BYTES   (screen.scanline * FONT_SCANLINES)
  143.  
  144. #define POINTPOS(x, y)  ((y) * screen.scanline + (x) * screen.pixelbytes)
  145.  
  146. static inline int COLOR(int color)
  147. {
  148.     return screen.invert_colors ? ~color : color;
  149. }
  150.  
  151. /* Conversion routines between different color representations */
  152. static void
  153. rgb_byte0888(void *dst, int rgb)
  154. {
  155.     *(int *)dst = rgb;
  156. }
  157.  
  158. static int
  159. byte0888_rgb(void *src)
  160. {
  161.     return (*(int *)src) & 0xffffff;
  162. }
  163.  
  164. static void
  165. bgr_byte0888(void *dst, int rgb)
  166. {
  167.     *((uint32_t *) dst) = BLUE(rgb, 8) << 16 | GREEN(rgb, 8) << 8 |
  168.         RED(rgb, 8);
  169. }
  170.  
  171. static int
  172. byte0888_bgr(void *src)
  173. {
  174.     int color = *(uint32_t *)(src);
  175.     return ((color & 0xff) << 16) | (((color >> 8) & 0xff) << 8) |
  176.         ((color >> 16) & 0xff);
  177. }
  178.  
  179. static void
  180. rgb_byte888(void *dst, int rgb)
  181. {
  182.     uint8_t *scr = dst;
  183. #if defined(FB_INVERT_ENDIAN)
  184.     scr[0] = RED(rgb, 8);
  185.     scr[1] = GREEN(rgb, 8);
  186.     scr[2] = BLUE(rgb, 8);
  187. #else
  188.     scr[2] = RED(rgb, 8);
  189.     scr[1] = GREEN(rgb, 8);
  190.     scr[0] = BLUE(rgb, 8);
  191. #endif
  192. }
  193.  
  194. static int
  195. byte888_rgb(void *src)
  196. {
  197.     uint8_t *scr = src;
  198. #if defined(FB_INVERT_ENDIAN)
  199.     return scr[0] << 16 | scr[1] << 8 | scr[2];
  200. #else
  201.     return scr[2] << 16 | scr[1] << 8 | scr[0];
  202. #endif 
  203. }
  204.  
  205. /**  16-bit depth (5:5:5) */
  206. static void
  207. rgb_byte555(void *dst, int rgb)
  208. {
  209.     /* 5-bit, 5-bits, 5-bits */
  210.     *((uint16_t *)(dst)) = RED(rgb, 5) << 10 | GREEN(rgb, 5) << 5 |
  211.         BLUE(rgb, 5);
  212. }
  213.  
  214. /** 16-bit depth (5:5:5) */
  215. static int
  216. byte555_rgb(void *src)
  217. {
  218.     int color = *(uint16_t *)(src);
  219.     return (((color >> 10) & 0x1f) << (16 + 3)) |
  220.         (((color >> 5) & 0x1f) << (8 + 3)) | ((color & 0x1f) << 3);
  221. }
  222.  
  223. /**  16-bit depth (5:6:5) */
  224. static void
  225. rgb_byte565(void *dst, int rgb)
  226. {
  227.     /* 5-bit, 6-bits, 5-bits */
  228.     *((uint16_t *)(dst)) = RED(rgb, 5) << 11 | GREEN(rgb, 6) << 5 |
  229.         BLUE(rgb, 5);
  230. }
  231.  
  232. /** 16-bit depth (5:6:5) */
  233. static int
  234. byte565_rgb(void *src)
  235. {
  236.     int color = *(uint16_t *)(src);
  237.     return (((color >> 11) & 0x1f) << (16 + 3)) |
  238.         (((color >> 5) & 0x3f) << (8 + 2)) | ((color & 0x1f) << 3);
  239. }
  240.  
  241. /** Put pixel - 8-bit depth (3:2:3) */
  242. static void
  243. rgb_byte8(void *dst, int rgb)
  244. {
  245.     *(uint8_t *)dst = RED(rgb, 3) << 5 | GREEN(rgb, 2) << 3 | BLUE(rgb, 3);
  246. }
  247.  
  248. /** Return pixel color - 8-bit depth (3:2:3) */
  249. static int
  250. byte8_rgb(void *src)
  251. {
  252.     int color = *(uint8_t *)src;
  253.     return (((color >> 5) & 0x7) << (16 + 5)) |
  254.         (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
  255. }
  256.  
  257. /** Put pixel into viewport
  258.  *
  259.  * @param vport Viewport identification
  260.  * @param x X coord relative to viewport
  261.  * @param y Y coord relative to viewport
  262.  * @param color RGB color
  263.  */
  264. static void
  265. putpixel(viewport_t *vport, unsigned int x, unsigned int y, int color)
  266. {
  267.     int dx = vport->x + x;
  268.     int dy = vport->y + y;
  269.  
  270.     if (! (vport->paused && vport->dbdata))
  271.         (*screen.rgb2scr)(&screen.fbaddress[POINTPOS(dx,dy)],
  272.             COLOR(color));
  273.  
  274.     if (vport->dbdata) {
  275.         int dline = (y + vport->dboffset) % vport->height;
  276.         int doffset = screen.pixelbytes * (dline * vport->width + x);
  277.         (*screen.rgb2scr)(&vport->dbdata[doffset], COLOR(color));
  278.     }
  279. }
  280.  
  281. /** Get pixel from viewport */
  282. static int
  283. getpixel(viewport_t *vport, unsigned int x, unsigned int y)
  284. {
  285.     int dx = vport->x + x;
  286.     int dy = vport->y + y;
  287.  
  288.     return COLOR((*screen.scr2rgb)(&screen.fbaddress[POINTPOS(dx, dy)]));
  289. }
  290.  
  291. static inline void
  292. putpixel_mem(char *mem, unsigned int x, unsigned int y, int color)
  293. {
  294.     (*screen.rgb2scr)(&mem[POINTPOS(x, y)], COLOR(color));
  295. }
  296.  
  297. static void
  298. draw_rectangle(viewport_t *vport, unsigned int sx, unsigned int sy,
  299.     unsigned int width, unsigned int height, int color)
  300. {
  301.     unsigned int x, y;
  302.     static void *tmpline;
  303.  
  304.     if (!tmpline)
  305.         tmpline = malloc(screen.scanline * screen.pixelbytes);
  306.  
  307.     /* Clear first line */
  308.     for (x = 0; x < width; x++)
  309.         putpixel_mem(tmpline, x, 0, color);
  310.  
  311.     if (!vport->paused) {
  312.         /* Recompute to screen coords */
  313.         sx += vport->x;
  314.         sy += vport->y;
  315.         /* Copy the rest */
  316.         for (y = sy;y < sy+height; y++)
  317.             memcpy(&screen.fbaddress[POINTPOS(sx,y)], tmpline,
  318.                 screen.pixelbytes * width);
  319.     }
  320.     if (vport->dbdata) {
  321.         for (y = sy; y < sy + height; y++) {
  322.             int rline = (y + vport->dboffset) % vport->height;
  323.             int rpos = (rline * vport->width + sx) *
  324.                 screen.pixelbytes;
  325.             memcpy(&vport->dbdata[rpos], tmpline,
  326.                 screen.pixelbytes * width);
  327.         }
  328.     }
  329.  
  330. }
  331.  
  332. /** Fill viewport with background color */
  333. static void
  334. clear_port(viewport_t *vport)
  335. {
  336.     draw_rectangle(vport, 0, 0, vport->width, vport->height,
  337.         vport->style.bg_color);
  338. }
  339.  
  340. /** Scroll unbuffered viewport up/down
  341.  *
  342.  * @param vport Viewport to scroll
  343.  * @param lines Positive number - scroll up, negative - scroll down
  344.  */
  345. static void
  346. scroll_port_nodb(viewport_t *vport, int lines)
  347. {
  348.     int y;
  349.  
  350.     if (lines > 0) {
  351.         for (y = vport->y; y < vport->y+vport->height - lines; y++)
  352.             memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],
  353.                 &screen.fbaddress[POINTPOS(vport->x,y + lines)],
  354.                 screen.pixelbytes * vport->width);
  355.         draw_rectangle(vport, 0, vport->height - lines, vport->width,
  356.             lines, vport->style.bg_color);
  357.     } else if (lines < 0) {
  358.         lines = -lines;
  359.         for (y = vport->y + vport->height-1; y >= vport->y + lines; y--)
  360.             memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],
  361.                 &screen.fbaddress[POINTPOS(vport->x,y - lines)],
  362.                 screen.pixelbytes * vport->width);
  363.         draw_rectangle(vport, 0, 0, vport->width, lines,
  364.             vport->style.bg_color);
  365.     }
  366. }
  367.  
  368. /** Refresh given viewport from double buffer */
  369. static void
  370. refresh_viewport_db(viewport_t *vport)
  371. {
  372.     unsigned int y, srcy, srcoff, dsty, dstx;
  373.  
  374.     for (y = 0; y < vport->height; y++) {
  375.         srcy = (y + vport->dboffset) % vport->height;
  376.         srcoff = (vport->width * srcy) * screen.pixelbytes;
  377.  
  378.         dstx = vport->x;
  379.         dsty = vport->y + y;
  380.  
  381.         memcpy(&screen.fbaddress[POINTPOS(dstx,dsty)],
  382.             &vport->dbdata[srcoff], vport->width * screen.pixelbytes);
  383.     }
  384. }
  385.  
  386. /** Scroll viewport that has double buffering enabled */
  387. static void
  388. scroll_port_db(viewport_t *vport, int lines)
  389. {
  390.     ++vport->paused;
  391.     if (lines > 0) {
  392.         draw_rectangle(vport, 0, 0, vport->width, lines,
  393.             vport->style.bg_color);
  394.         vport->dboffset += lines;
  395.         vport->dboffset %= vport->height;
  396.     } else if (lines < 0) {
  397.         lines = -lines;
  398.         draw_rectangle(vport, 0, vport->height-lines, vport->width,
  399.             lines, vport->style.bg_color);
  400.  
  401.         if (vport->dboffset < lines)
  402.             vport->dboffset += vport->height;
  403.         vport->dboffset -= lines;
  404.     }
  405.    
  406.     --vport->paused;
  407.    
  408.     refresh_viewport_db(vport);
  409. }
  410.  
  411. /** Scrolls viewport given number of lines */
  412. static void
  413. scroll_port(viewport_t *vport, int lines)
  414. {
  415.     if (vport->dbdata)
  416.         scroll_port_db(vport, lines);
  417.     else
  418.         scroll_port_nodb(vport, lines);
  419.    
  420. }
  421.  
  422. static void
  423. invert_pixel(viewport_t *vport, unsigned int x, unsigned int y)
  424. {
  425.     putpixel(vport, x, y, ~getpixel(vport, x, y));
  426. }
  427.  
  428.  
  429. /***************************************************************/
  430. /* Character-console functions */
  431.  
  432. /** Draw character at given position
  433.  *
  434.  * @param vport Viewport where the character is printed
  435.  * @param sx Coordinates of top-left of the character
  436.  * @param sy Coordinates of top-left of the character
  437.  * @param style Color of the character
  438.  * @param transparent If false, print background color
  439.  */
  440. static void
  441. draw_glyph(viewport_t *vport,uint8_t glyph, unsigned int sx, unsigned int sy,
  442.     style_t style, int transparent)
  443. {
  444.     int i;
  445.     unsigned int y;
  446.     unsigned int glline;
  447.  
  448.     for (y = 0; y < FONT_SCANLINES; y++) {
  449.         glline = fb_font[glyph * FONT_SCANLINES + y];
  450.         for (i = 0; i < 8; i++) {
  451.             if (glline & (1 << (7 - i)))
  452.                 putpixel(vport, sx + i, sy + y, style.fg_color);
  453.             else if (!transparent)
  454.                 putpixel(vport, sx + i, sy + y, style.bg_color);
  455.         }
  456.     }
  457. }
  458.  
  459. /** Invert character at given position */
  460. static void
  461. invert_char(viewport_t *vport,unsigned int row, unsigned int col)
  462. {
  463.     unsigned int x;
  464.     unsigned int y;
  465.  
  466.     for (x = 0; x < COL_WIDTH; x++)
  467.         for (y = 0; y < FONT_SCANLINES; y++)
  468.             invert_pixel(vport, col * COL_WIDTH + x, row *
  469.                 FONT_SCANLINES + y);
  470. }
  471.  
  472. /***************************************************************/
  473. /* Stdout specific functions */
  474.  
  475.  
  476. /** Create new viewport
  477.  *
  478.  * @return New viewport number
  479.  */
  480. static int
  481. viewport_create(unsigned int x, unsigned int y,unsigned int width,
  482.     unsigned int height)
  483. {
  484.     int i;
  485.  
  486.     for (i = 0; i < MAX_VIEWPORTS; i++) {
  487.         if (!viewports[i].initialized)
  488.             break;
  489.     }
  490.     if (i == MAX_VIEWPORTS)
  491.         return ELIMIT;
  492.  
  493.     viewports[i].x = x;
  494.     viewports[i].y = y;
  495.     viewports[i].width = width;
  496.     viewports[i].height = height;
  497.    
  498.     viewports[i].rows = height / FONT_SCANLINES;
  499.     viewports[i].cols = width / COL_WIDTH;
  500.  
  501.     viewports[i].style.bg_color = DEFAULT_BGCOLOR;
  502.     viewports[i].style.fg_color = DEFAULT_FGCOLOR;
  503.    
  504.     viewports[i].cur_col = 0;
  505.     viewports[i].cur_row = 0;
  506.     viewports[i].cursor_active = 0;
  507.  
  508.     viewports[i].initialized = 1;
  509.  
  510.     return i;
  511. }
  512.  
  513. /** Initialize framebuffer as a chardev output device
  514.  *
  515.  * @param addr          Address of theframebuffer
  516.  * @param xres          Screen width in pixels
  517.  * @param yres          Screen height in pixels
  518.  * @param visual        Bits per pixel (8, 16, 24, 32)
  519.  * @param scan          Bytes per one scanline
  520.  * @param invert_colors Inverted colors.
  521.  *
  522.  */
  523. static bool
  524. screen_init(void *addr, unsigned int xres, unsigned int yres,
  525.     unsigned int scan, unsigned int visual, bool invert_colors)
  526. {
  527.     switch (visual) {
  528.     case VISUAL_INDIRECT_8:
  529.         screen.rgb2scr = rgb_byte8;
  530.         screen.scr2rgb = byte8_rgb;
  531.         screen.pixelbytes = 1;
  532.         break;
  533.     case VISUAL_RGB_5_5_5:
  534.         screen.rgb2scr = rgb_byte555;
  535.         screen.scr2rgb = byte555_rgb;
  536.         screen.pixelbytes = 2;
  537.         break;
  538.     case VISUAL_RGB_5_6_5:
  539.         screen.rgb2scr = rgb_byte565;
  540.         screen.scr2rgb = byte565_rgb;
  541.         screen.pixelbytes = 2;
  542.         break;
  543.     case VISUAL_RGB_8_8_8:
  544.         screen.rgb2scr = rgb_byte888;
  545.         screen.scr2rgb = byte888_rgb;
  546.         screen.pixelbytes = 3;
  547.         break;
  548.     case VISUAL_RGB_8_8_8_0:
  549.         screen.rgb2scr = rgb_byte888;
  550.         screen.scr2rgb = byte888_rgb;
  551.         screen.pixelbytes = 4;
  552.         break;
  553.     case VISUAL_RGB_0_8_8_8:
  554.         screen.rgb2scr = rgb_byte0888;
  555.         screen.scr2rgb = byte0888_rgb;
  556.         screen.pixelbytes = 4;
  557.         break;
  558.     case VISUAL_BGR_0_8_8_8:
  559.         screen.rgb2scr = bgr_byte0888;
  560.         screen.scr2rgb = byte0888_bgr;
  561.         screen.pixelbytes = 4;
  562.         break;
  563.     default:
  564.         return false;
  565.     }
  566.  
  567.     screen.fbaddress = (unsigned char *) addr;
  568.     screen.xres = xres;
  569.     screen.yres = yres;
  570.     screen.scanline = scan;
  571.     screen.invert_colors = invert_colors;
  572.    
  573.     /* Create first viewport */
  574.     viewport_create(0, 0, xres, yres);
  575.    
  576.     return true;
  577. }
  578.  
  579. /** Hide cursor if it is shown */
  580. static void
  581. cursor_hide(viewport_t *vport)
  582. {
  583.     if (vport->cursor_active && vport->cursor_shown) {
  584.         invert_char(vport, vport->cur_row, vport->cur_col);
  585.         vport->cursor_shown = 0;
  586.     }
  587. }
  588.  
  589. /** Show cursor if cursor showing is enabled */
  590. static void
  591. cursor_print(viewport_t *vport)
  592. {
  593.     /* Do not check for cursor_shown */
  594.     if (vport->cursor_active) {
  595.         invert_char(vport, vport->cur_row, vport->cur_col);
  596.         vport->cursor_shown = 1;
  597.     }
  598. }
  599.  
  600. /** Invert cursor, if it is enabled */
  601. static void
  602. cursor_blink(viewport_t *vport)
  603. {
  604.     if (vport->cursor_shown)
  605.         cursor_hide(vport);
  606.     else
  607.         cursor_print(vport);
  608. }
  609.  
  610. /** Draw character at given position relative to viewport
  611.  *
  612.  * @param vport Viewport identification
  613.  * @param c Character to print
  614.  * @param row Screen position relative to viewport
  615.  * @param col Screen position relative to viewport
  616.  * @param transparent If false, print background color with character
  617.  */
  618. static void
  619. draw_char(viewport_t *vport, char c, unsigned int row, unsigned int col,
  620.     style_t style, int transparent)
  621. {
  622.     /* Optimize - do not hide cursor if we are going to overwrite it */
  623.     if (vport->cursor_active && vport->cursor_shown &&
  624.         (vport->cur_col != col || vport->cur_row != row))
  625.         invert_char(vport, vport->cur_row, vport->cur_col);
  626.    
  627.     draw_glyph(vport, c, col * COL_WIDTH, row * FONT_SCANLINES, style,
  628.         transparent);
  629.  
  630.     vport->cur_col = col;
  631.     vport->cur_row = row;
  632.  
  633.     vport->cur_col++;
  634.     if (vport->cur_col >= vport->cols) {
  635.         vport->cur_col = 0;
  636.         vport->cur_row++;
  637.         if (vport->cur_row >= vport->rows)
  638.             vport->cur_row--;
  639.     }
  640.     cursor_print(vport);
  641. }
  642.  
  643. /** Draw text data to viewport
  644.  *
  645.  * @param vport Viewport id
  646.  * @param data Text data fitting exactly into viewport
  647.  */
  648. static void
  649. draw_text_data(viewport_t *vport, keyfield_t *data)
  650. {
  651.     int i;
  652.     int col,row;
  653.  
  654.     clear_port(vport);
  655.     for (i = 0; i < vport->cols * vport->rows; i++) {
  656.         if (data[i].character == ' ' && style_same(data[i].style,
  657.             vport->style))
  658.             continue;
  659.         col = i % vport->cols;
  660.         row = i / vport->cols;
  661.         draw_glyph(vport, data[i].character, col * COL_WIDTH, row *
  662.             FONT_SCANLINES, data[i].style, style_same(data[i].style,
  663.             vport->style));
  664.     }
  665.     cursor_print(vport);
  666. }
  667.  
  668. /** Return first free pixmap */
  669. static int
  670. find_free_pixmap(void)
  671. {
  672.     int i;
  673.    
  674.     for (i = 0;i < MAX_PIXMAPS;i++)
  675.         if (!pixmaps[i].data)
  676.             return i;
  677.     return -1;
  678. }
  679.  
  680. static void
  681. putpixel_pixmap(int pm, unsigned int x, unsigned int y, int color)
  682. {
  683.     pixmap_t *pmap = &pixmaps[pm];
  684.     int pos = (y * pmap->width + x) * screen.pixelbytes;
  685.  
  686.     (*screen.rgb2scr)(&pmap->data[pos],COLOR(color));
  687. }
  688.  
  689. /** Create a new pixmap and return appropriate ID */
  690. static int
  691. shm2pixmap(unsigned char *shm, size_t size)
  692. {
  693.     int pm;
  694.     pixmap_t *pmap;
  695.  
  696.     pm = find_free_pixmap();
  697.     if (pm == -1)
  698.         return ELIMIT;
  699.     pmap = &pixmaps[pm];
  700.    
  701.     if (ppm_get_data(shm, size, &pmap->width, &pmap->height))
  702.         return EINVAL;
  703.    
  704.     pmap->data = malloc(pmap->width * pmap->height * screen.pixelbytes);
  705.     if (!pmap->data)
  706.         return ENOMEM;
  707.  
  708.     ppm_draw(shm, size, 0, 0, pmap->width, pmap->height,
  709.         (putpixel_cb_t)putpixel_pixmap, (void *)pm);
  710.  
  711.     return pm;
  712. }
  713.  
  714. /** Handle shared memory communication calls
  715.  *
  716.  * Protocol for drawing pixmaps:
  717.  * - FB_PREPARE_SHM(client shm identification)
  718.  * - IPC_M_AS_AREA_SEND
  719.  * - FB_DRAW_PPM(startx,starty)
  720.  * - FB_DROP_SHM
  721.  *
  722.  * Protocol for text drawing
  723.  * - IPC_M_AS_AREA_SEND
  724.  * - FB_DRAW_TEXT_DATA
  725.  *
  726.  * @param callid Callid of the current call
  727.  * @param call Current call data
  728.  * @param vp Active viewport
  729.  * @return 0 if the call was not handled byt this function, 1 otherwise
  730.  *
  731.  * note: this function is not threads safe, you would have
  732.  * to redefine static variables with __thread
  733.  */
  734. static int
  735. shm_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  736. {
  737.     static keyfield_t *interbuffer = NULL;
  738.     static size_t intersize = 0;
  739.  
  740.     static unsigned char *shm = NULL;
  741.     static ipcarg_t shm_id = 0;
  742.     static size_t shm_size;
  743.  
  744.     int handled = 1;
  745.     int retval = 0;
  746.     viewport_t *vport = &viewports[vp];
  747.     unsigned int x, y;
  748.  
  749.     switch (IPC_GET_METHOD(*call)) {
  750.     case IPC_M_SHARE_OUT:
  751.         /* We accept one area for data interchange */
  752.         if (IPC_GET_ARG1(*call) == shm_id) {
  753.             void *dest = as_get_mappable_page(IPC_GET_ARG2(*call));
  754.             shm_size = IPC_GET_ARG2(*call);
  755.             if (!ipc_answer_1(callid, EOK, (sysarg_t) dest))
  756.                 shm = dest;
  757.             else
  758.                 shm_id = 0;
  759.             if (shm[0] != 'P')
  760.                 while (1)
  761.                     ;
  762.             return 1;
  763.         } else {
  764.             intersize = IPC_GET_ARG2(*call);
  765.             receive_comm_area(callid, call, (void *) &interbuffer);
  766.         }
  767.         return 1;
  768.     case FB_PREPARE_SHM:
  769.         if (shm_id)
  770.             retval = EBUSY;
  771.         else
  772.             shm_id = IPC_GET_ARG1(*call);
  773.         break;
  774.        
  775.     case FB_DROP_SHM:
  776.         if (shm) {
  777.             as_area_destroy(shm);
  778.             shm = NULL;
  779.         }
  780.         shm_id = 0;
  781.         break;
  782.  
  783.     case FB_SHM2PIXMAP:
  784.         if (!shm) {
  785.             retval = EINVAL;
  786.             break;
  787.         }
  788.         retval = shm2pixmap(shm, shm_size);
  789.         break;
  790.     case FB_DRAW_PPM:
  791.         if (!shm) {
  792.             retval = EINVAL;
  793.             break;
  794.         }
  795.         x = IPC_GET_ARG1(*call);
  796.         y = IPC_GET_ARG2(*call);
  797.         if (x > vport->width || y > vport->height) {
  798.             retval = EINVAL;
  799.             break;
  800.         }
  801.        
  802.         ppm_draw(shm, shm_size, IPC_GET_ARG1(*call),
  803.             IPC_GET_ARG2(*call), vport->width - x, vport->height - y,
  804.             (putpixel_cb_t)putpixel, vport);
  805.         break;
  806.     case FB_DRAW_TEXT_DATA:
  807.         if (!interbuffer) {
  808.             retval = EINVAL;
  809.             break;
  810.         }
  811.         if (intersize < vport->cols * vport->rows *
  812.             sizeof(*interbuffer)) {
  813.             retval = EINVAL;
  814.             break;
  815.         }
  816.         draw_text_data(vport, interbuffer);
  817.         break;
  818.     default:
  819.         handled = 0;
  820.     }
  821.    
  822.     if (handled)
  823.         ipc_answer_0(callid, retval);
  824.     return handled;
  825. }
  826.  
  827. static void
  828. copy_vp_to_pixmap(viewport_t *vport, pixmap_t *pmap)
  829. {
  830.     int y;
  831.     int tmp, srcrowsize;
  832.     int realwidth, realheight, realrowsize;
  833.     int width = vport->width;
  834.     int height = vport->height;
  835.  
  836.     if (width + vport->x > screen.xres)
  837.         width = screen.xres - vport->x;
  838.     if (height + vport->y > screen.yres)
  839.         height = screen.yres - vport->y;
  840.    
  841.     realwidth = pmap->width <= width ? pmap->width : width;
  842.     realheight = pmap->height <= height ? pmap->height : height;
  843.  
  844.     srcrowsize = vport->width * screen.pixelbytes;
  845.     realrowsize = realwidth * screen.pixelbytes;
  846.    
  847.     for (y = 0; y < realheight; y++) {
  848.         tmp = (vport->y + y) * screen.scanline +
  849.             vport->x * screen.pixelbytes;
  850.         memcpy(pmap->data + srcrowsize * y, screen.fbaddress + tmp,
  851.             realrowsize);
  852.     }
  853. }
  854.  
  855. /** Save viewport to pixmap */
  856. static int
  857. save_vp_to_pixmap(viewport_t *vport)
  858. {
  859.     int pm;
  860.     pixmap_t *pmap;
  861.  
  862.     pm = find_free_pixmap();
  863.     if (pm == -1)
  864.         return ELIMIT;
  865.    
  866.     pmap = &pixmaps[pm];
  867.     pmap->data = malloc(screen.pixelbytes * vport->width * vport->height);
  868.     if (!pmap->data)
  869.         return ENOMEM;
  870.  
  871.     pmap->width = vport->width;
  872.     pmap->height = vport->height;
  873.  
  874.     copy_vp_to_pixmap(vport, pmap);
  875.    
  876.     return pm;
  877. }
  878.  
  879. /** Draw pixmap on screen
  880.  *
  881.  * @param vp Viewport to draw on
  882.  * @param pm Pixmap identifier
  883.  */
  884. static int draw_pixmap(int vp, int pm)
  885. {
  886.     pixmap_t *pmap = &pixmaps[pm];
  887.     viewport_t *vport = &viewports[vp];
  888.     int y;
  889.     int tmp, srcrowsize;
  890.     int realwidth, realheight, realrowsize;
  891.     int width = vport->width;
  892.     int height = vport->height;
  893.  
  894.     if (width + vport->x > screen.xres)
  895.         width = screen.xres - vport->x;
  896.     if (height + vport->y > screen.yres)
  897.         height = screen.yres - vport->y;
  898.  
  899.     if (!pmap->data)
  900.         return EINVAL;
  901.  
  902.     realwidth = pmap->width <= width ? pmap->width : width;
  903.     realheight = pmap->height <= height ? pmap->height : height;
  904.  
  905.     srcrowsize = vport->width * screen.pixelbytes;
  906.     realrowsize = realwidth * screen.pixelbytes;
  907.  
  908.     for (y = 0; y < realheight; y++) {
  909.         tmp = (vport->y + y) * screen.scanline +
  910.             vport->x * screen.pixelbytes;
  911.         memcpy(screen.fbaddress + tmp, pmap->data + y * srcrowsize,
  912.             realrowsize);
  913.     }
  914.     return 0;
  915. }
  916.  
  917. /** Tick animation one step forward */
  918. static void
  919. anims_tick(void)
  920. {
  921.     int i;
  922.     static int counts = 0;
  923.    
  924.     /* Limit redrawing */
  925.     counts = (counts + 1) % 8;
  926.     if (counts)
  927.         return;
  928.  
  929.     for (i = 0; i < MAX_ANIMATIONS; i++) {
  930.         if (!animations[i].animlen || !animations[i].initialized ||
  931.             !animations[i].enabled)
  932.             continue;
  933.         draw_pixmap(animations[i].vp,
  934.             animations[i].pixmaps[animations[i].pos]);
  935.         animations[i].pos = (animations[i].pos + 1) %
  936.             animations[i].animlen;
  937.     }
  938. }
  939.  
  940.  
  941. static int pointer_x, pointer_y;
  942. static int pointer_shown, pointer_enabled;
  943. static int pointer_vport = -1;
  944. static int pointer_pixmap = -1;
  945.  
  946. static void
  947. mouse_show(void)
  948. {
  949.     int i, j;
  950.     int visibility;
  951.     int color;
  952.     int bytepos;
  953.  
  954.     if (pointer_shown || !pointer_enabled)
  955.         return;
  956.  
  957.     /* Save image under the cursor */
  958.     if (pointer_vport == -1) {
  959.         pointer_vport = viewport_create(pointer_x, pointer_y,
  960.             pointer_width, pointer_height);
  961.         if (pointer_vport < 0)
  962.             return;
  963.     } else {
  964.         viewports[pointer_vport].x = pointer_x;
  965.         viewports[pointer_vport].y = pointer_y;
  966.     }
  967.  
  968.     if (pointer_pixmap == -1)
  969.         pointer_pixmap = save_vp_to_pixmap(&viewports[pointer_vport]);
  970.     else
  971.         copy_vp_to_pixmap(&viewports[pointer_vport],
  972.             &pixmaps[pointer_pixmap]);
  973.  
  974.     /* Draw cursor */
  975.     for (i = 0; i < pointer_height; i++)
  976.         for (j = 0; j < pointer_width; j++) {
  977.             bytepos = i * ((pointer_width - 1) / 8 + 1) + j / 8;
  978.             visibility = pointer_mask_bits[bytepos] &
  979.                 (1 << (j % 8));
  980.             if (visibility) {
  981.                 color = pointer_bits[bytepos] &
  982.                     (1 << (j % 8)) ? 0 : 0xffffff;
  983.                 if (pointer_x + j < screen.xres && pointer_y +
  984.                     i < screen.yres)
  985.                     putpixel(&viewports[0], pointer_x + j,
  986.                         pointer_y + i, color);
  987.             }
  988.         }
  989.     pointer_shown = 1;
  990. }
  991.  
  992. static void
  993. mouse_hide(void)
  994. {
  995.     /* Restore image under the cursor */
  996.     if (pointer_shown) {
  997.         draw_pixmap(pointer_vport, pointer_pixmap);
  998.         pointer_shown = 0;
  999.     }
  1000. }
  1001.  
  1002. static void
  1003. mouse_move(unsigned int x, unsigned int y)
  1004. {
  1005.     mouse_hide();
  1006.     pointer_x = x;
  1007.     pointer_y = y;
  1008.     mouse_show();
  1009. }
  1010.  
  1011. static int
  1012. anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  1013. {
  1014.     int handled = 1;
  1015.     int retval = 0;
  1016.     int i,nvp;
  1017.     int newval;
  1018.  
  1019.     switch (IPC_GET_METHOD(*call)) {
  1020.     case FB_ANIM_CREATE:
  1021.         nvp = IPC_GET_ARG1(*call);
  1022.         if (nvp == -1)
  1023.             nvp = vp;
  1024.         if (nvp >= MAX_VIEWPORTS || nvp < 0 ||
  1025.             !viewports[nvp].initialized) {
  1026.             retval = EINVAL;
  1027.             break;
  1028.         }
  1029.         for (i = 0; i < MAX_ANIMATIONS; i++) {
  1030.             if (!animations[i].initialized)
  1031.                 break;
  1032.         }
  1033.         if (i == MAX_ANIMATIONS) {
  1034.             retval = ELIMIT;
  1035.             break;
  1036.         }
  1037.         animations[i].initialized = 1;
  1038.         animations[i].animlen = 0;
  1039.         animations[i].pos = 0;
  1040.         animations[i].enabled = 0;
  1041.         animations[i].vp = nvp;
  1042.         retval = i;
  1043.         break;
  1044.     case FB_ANIM_DROP:
  1045.         i = IPC_GET_ARG1(*call);
  1046.         if (i >= MAX_ANIMATIONS || i < 0) {
  1047.             retval = EINVAL;
  1048.             break;
  1049.         }
  1050.         animations[i].initialized = 0;
  1051.         break;
  1052.     case FB_ANIM_ADDPIXMAP:
  1053.         i = IPC_GET_ARG1(*call);
  1054.         if (i >= MAX_ANIMATIONS || i < 0 ||
  1055.             !animations[i].initialized) {
  1056.             retval = EINVAL;
  1057.             break;
  1058.         }
  1059.         if (animations[i].animlen == MAX_ANIM_LEN) {
  1060.             retval = ELIMIT;
  1061.             break;
  1062.         }
  1063.         newval = IPC_GET_ARG2(*call);
  1064.         if (newval < 0 || newval > MAX_PIXMAPS ||
  1065.             !pixmaps[newval].data) {
  1066.             retval = EINVAL;
  1067.             break;
  1068.         }
  1069.         animations[i].pixmaps[animations[i].animlen++] = newval;
  1070.         break;
  1071.     case FB_ANIM_CHGVP:
  1072.         i = IPC_GET_ARG1(*call);
  1073.         if (i >= MAX_ANIMATIONS || i < 0) {
  1074.             retval = EINVAL;
  1075.             break;
  1076.         }
  1077.         nvp = IPC_GET_ARG2(*call);
  1078.         if (nvp == -1)
  1079.             nvp = vp;
  1080.         if (nvp >= MAX_VIEWPORTS || nvp < 0 ||
  1081.             !viewports[nvp].initialized) {
  1082.             retval = EINVAL;
  1083.             break;
  1084.         }
  1085.         animations[i].vp = nvp;
  1086.         break;
  1087.     case FB_ANIM_START:
  1088.     case FB_ANIM_STOP:
  1089.         i = IPC_GET_ARG1(*call);
  1090.         if (i >= MAX_ANIMATIONS || i < 0) {
  1091.             retval = EINVAL;
  1092.             break;
  1093.         }
  1094.         newval = (IPC_GET_METHOD(*call) == FB_ANIM_START);
  1095.         if (newval ^ animations[i].enabled) {
  1096.             animations[i].enabled = newval;
  1097.             anims_enabled += newval ? 1 : -1;
  1098.         }
  1099.         break;
  1100.     default:
  1101.         handled = 0;
  1102.     }
  1103.     if (handled)
  1104.         ipc_answer_0(callid, retval);
  1105.     return handled;
  1106. }
  1107.  
  1108. /** Handler for messages concerning pixmap handling */
  1109. static int
  1110. pixmap_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  1111. {
  1112.     int handled = 1;
  1113.     int retval = 0;
  1114.     int i,nvp;
  1115.  
  1116.     switch (IPC_GET_METHOD(*call)) {
  1117.     case FB_VP_DRAW_PIXMAP:
  1118.         nvp = IPC_GET_ARG1(*call);
  1119.         if (nvp == -1)
  1120.             nvp = vp;
  1121.         if (nvp < 0 || nvp >= MAX_VIEWPORTS ||
  1122.             !viewports[nvp].initialized) {
  1123.             retval = EINVAL;
  1124.             break;
  1125.         }
  1126.         i = IPC_GET_ARG2(*call);
  1127.         retval = draw_pixmap(nvp, i);
  1128.         break;
  1129.     case FB_VP2PIXMAP:
  1130.         nvp = IPC_GET_ARG1(*call);
  1131.         if (nvp == -1)
  1132.             nvp = vp;
  1133.         if (nvp < 0 || nvp >= MAX_VIEWPORTS ||
  1134.             !viewports[nvp].initialized)
  1135.             retval = EINVAL;
  1136.         else
  1137.             retval = save_vp_to_pixmap(&viewports[nvp]);
  1138.         break;
  1139.     case FB_DROP_PIXMAP:
  1140.         i = IPC_GET_ARG1(*call);
  1141.         if (i >= MAX_PIXMAPS) {
  1142.             retval = EINVAL;
  1143.             break;
  1144.         }
  1145.         if (pixmaps[i].data) {
  1146.             free(pixmaps[i].data);
  1147.             pixmaps[i].data = NULL;
  1148.         }
  1149.         break;
  1150.     default:
  1151.         handled = 0;
  1152.     }
  1153.  
  1154.     if (handled)
  1155.         ipc_answer_0(callid, retval);
  1156.     return handled;
  1157.    
  1158. }
  1159.  
  1160. /** Function for handling connections to FB
  1161.  *
  1162.  */
  1163. static void
  1164. fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
  1165. {
  1166.     ipc_callid_t callid;
  1167.     ipc_call_t call;
  1168.     int retval;
  1169.     int i;
  1170.     unsigned int row,col;
  1171.     char c;
  1172.  
  1173.     int vp = 0;
  1174.     viewport_t *vport = &viewports[0];
  1175.  
  1176.     if (client_connected) {
  1177.         ipc_answer_0(iid, ELIMIT);
  1178.         return;
  1179.     }
  1180.     client_connected = 1;
  1181.     ipc_answer_0(iid, EOK); /* Accept connection */
  1182.  
  1183.     while (1) {
  1184.         if (vport->cursor_active || anims_enabled)
  1185.             callid = async_get_call_timeout(&call, 250000);
  1186.         else
  1187.             callid = async_get_call(&call);
  1188.  
  1189.         mouse_hide();
  1190.         if (!callid) {
  1191.             cursor_blink(vport);
  1192.             anims_tick();
  1193.             mouse_show();
  1194.             continue;
  1195.         }
  1196.         if (shm_handle(callid, &call, vp))
  1197.             continue;
  1198.         if (pixmap_handle(callid, &call, vp))
  1199.             continue;
  1200.         if (anim_handle(callid, &call, vp))
  1201.             continue;
  1202.  
  1203.         switch (IPC_GET_METHOD(call)) {
  1204.         case IPC_M_PHONE_HUNGUP:
  1205.             client_connected = 0;
  1206.             /* cleanup other viewports */
  1207.             for (i = 1; i < MAX_VIEWPORTS; i++)
  1208.                 vport->initialized = 0;
  1209.             return; /* Exit thread */
  1210.  
  1211.         case FB_PUTCHAR:
  1212.         case FB_TRANS_PUTCHAR:
  1213.             c = IPC_GET_ARG1(call);
  1214.             row = IPC_GET_ARG2(call);
  1215.             col = IPC_GET_ARG3(call);
  1216.             if (row >= vport->rows || col >= vport->cols) {
  1217.                 retval = EINVAL;
  1218.                 break;
  1219.             }
  1220.             ipc_answer_0(callid, EOK);
  1221.  
  1222.             draw_char(vport, c, row, col, vport->style,
  1223.                 IPC_GET_METHOD(call) == FB_TRANS_PUTCHAR);
  1224.             continue; /* msg already answered */
  1225.         case FB_CLEAR:
  1226.             clear_port(vport);
  1227.             cursor_print(vport);
  1228.             retval = 0;
  1229.             break;
  1230.         case FB_CURSOR_GOTO:
  1231.             row = IPC_GET_ARG1(call);
  1232.             col = IPC_GET_ARG2(call);
  1233.             if (row >= vport->rows || col >= vport->cols) {
  1234.                 retval = EINVAL;
  1235.                 break;
  1236.             }
  1237.             retval = 0;
  1238.             cursor_hide(vport);
  1239.             vport->cur_col = col;
  1240.             vport->cur_row = row;
  1241.             cursor_print(vport);
  1242.             break;
  1243.         case FB_CURSOR_VISIBILITY:
  1244.             cursor_hide(vport);
  1245.             vport->cursor_active = IPC_GET_ARG1(call);
  1246.             cursor_print(vport);
  1247.             retval = 0;
  1248.             break;
  1249.         case FB_GET_CSIZE:
  1250.             ipc_answer_2(callid, EOK, vport->rows, vport->cols);
  1251.             continue;
  1252.         case FB_SCROLL:
  1253.             i = IPC_GET_ARG1(call);
  1254.             if (i > vport->rows || i < (- (int)vport->rows)) {
  1255.                 retval = EINVAL;
  1256.                 break;
  1257.             }
  1258.             cursor_hide(vport);
  1259.             scroll_port(vport, i*FONT_SCANLINES);
  1260.             cursor_print(vport);
  1261.             retval = 0;
  1262.             break;
  1263.         case FB_VIEWPORT_DB:
  1264.             /* Enable double buffering */
  1265.             i = IPC_GET_ARG1(call);
  1266.             if (i == -1)
  1267.                 i = vp;
  1268.             if (i < 0 || i >= MAX_VIEWPORTS) {
  1269.                 retval = EINVAL;
  1270.                 break;
  1271.             }
  1272.             if (!viewports[i].initialized ) {
  1273.                 retval = EADDRNOTAVAIL;
  1274.                 break;
  1275.             }
  1276.             viewports[i].dboffset = 0;
  1277.             if (IPC_GET_ARG2(call) == 1 && !viewports[i].dbdata)
  1278.                 viewports[i].dbdata =
  1279.                     malloc(screen.pixelbytes *
  1280.                     viewports[i].width * viewports[i].height);
  1281.             else if (IPC_GET_ARG2(call) == 0 &&
  1282.                 viewports[i].dbdata) {
  1283.                 free(viewports[i].dbdata);
  1284.                 viewports[i].dbdata = NULL;
  1285.             }
  1286.             retval = 0;
  1287.             break;
  1288.         case FB_VIEWPORT_SWITCH:
  1289.             i = IPC_GET_ARG1(call);
  1290.             if (i < 0 || i >= MAX_VIEWPORTS) {
  1291.                 retval = EINVAL;
  1292.                 break;
  1293.             }
  1294.             if (! viewports[i].initialized ) {
  1295.                 retval = EADDRNOTAVAIL;
  1296.                 break;
  1297.             }
  1298.             cursor_hide(vport);
  1299.             vp = i;
  1300.             vport = &viewports[vp];
  1301.             cursor_print(vport);
  1302.             retval = 0;
  1303.             break;
  1304.         case FB_VIEWPORT_CREATE:
  1305.             retval = viewport_create(IPC_GET_ARG1(call) >> 16,
  1306.                 IPC_GET_ARG1(call) & 0xffff,
  1307.                 IPC_GET_ARG2(call) >> 16,
  1308.                 IPC_GET_ARG2(call) & 0xffff);
  1309.             break;
  1310.         case FB_VIEWPORT_DELETE:
  1311.             i = IPC_GET_ARG1(call);
  1312.             if (i < 0 || i >= MAX_VIEWPORTS) {
  1313.                 retval = EINVAL;
  1314.                 break;
  1315.             }
  1316.             if (! viewports[i].initialized ) {
  1317.                 retval = EADDRNOTAVAIL;
  1318.                 break;
  1319.             }
  1320.             viewports[i].initialized = 0;
  1321.             if (viewports[i].dbdata) {
  1322.                 free(viewports[i].dbdata);
  1323.                 viewports[i].dbdata = NULL;
  1324.             }
  1325.             retval = 0;
  1326.             break;
  1327.         case FB_SET_STYLE:
  1328.             vport->style.fg_color = IPC_GET_ARG1(call);
  1329.             vport->style.bg_color = IPC_GET_ARG2(call);
  1330.             retval = 0;
  1331.             break;
  1332.         case FB_GET_RESOLUTION:
  1333.             ipc_answer_2(callid, EOK, screen.xres, screen.yres);
  1334.             continue;
  1335.         case FB_POINTER_MOVE:
  1336.             pointer_enabled = 1;
  1337.             mouse_move(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
  1338.             retval = 0;
  1339.             break;
  1340.         default:
  1341.             retval = ENOENT;
  1342.         }
  1343.         ipc_answer_0(callid, retval);
  1344.     }
  1345. }
  1346.  
  1347. /** Initialization of framebuffer */
  1348. int
  1349. fb_init(void)
  1350. {
  1351.     void *fb_ph_addr;
  1352.     unsigned int fb_width;
  1353.     unsigned int fb_height;
  1354.     unsigned int fb_scanline;
  1355.     unsigned int fb_visual;
  1356.     bool fb_invert_colors;
  1357.     void *fb_addr;
  1358.     size_t asz;
  1359.  
  1360.     async_set_client_connection(fb_client_connection);
  1361.  
  1362.     fb_ph_addr = (void *) sysinfo_value("fb.address.physical");
  1363.     fb_width = sysinfo_value("fb.width");
  1364.     fb_height = sysinfo_value("fb.height");
  1365.     fb_scanline = sysinfo_value("fb.scanline");
  1366.     fb_visual = sysinfo_value("fb.visual");
  1367.     fb_invert_colors = sysinfo_value("fb.invert-colors");
  1368.  
  1369.     asz = fb_scanline * fb_height;
  1370.     fb_addr = as_get_mappable_page(asz);
  1371.    
  1372.     physmem_map(fb_ph_addr, fb_addr, ALIGN_UP(asz, PAGE_SIZE) >>
  1373.         PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE);
  1374.  
  1375.     if (screen_init(fb_addr, fb_width, fb_height, fb_scanline, fb_visual,
  1376.         fb_invert_colors))
  1377.         return 0;
  1378.    
  1379.     return -1;
  1380. }
  1381.  
  1382. /**
  1383.  * @}
  1384.  */
  1385.