Subversion Repositories HelenOS

Rev

Rev 2025 | Rev 2071 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  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;
  360.              y--)
  361.             memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],
  362.                    &screen.fbaddress[POINTPOS(vport->x,y - lines)],
  363.                    screen.pixelbytes * vport->width);
  364.         draw_rectangle(vport, 0, 0, vport->width, lines,
  365.             vport->style.bg_color);
  366.     }
  367. }
  368.  
  369. /** Refresh given viewport from double buffer */
  370. static void
  371. refresh_viewport_db(viewport_t *vport)
  372. {
  373.     unsigned int y, srcy, srcoff, dsty, dstx;
  374.  
  375.     for (y = 0; y < vport->height; y++) {
  376.         srcy = (y + vport->dboffset) % vport->height;
  377.         srcoff = (vport->width * srcy) * screen.pixelbytes;
  378.  
  379.         dstx = vport->x;
  380.         dsty = vport->y + y;
  381.  
  382.         memcpy(&screen.fbaddress[POINTPOS(dstx,dsty)],
  383.                &vport->dbdata[srcoff],
  384.                vport->width*screen.pixelbytes);
  385.     }
  386. }
  387.  
  388. /** Scroll viewport that has double buffering enabled */
  389. static void
  390. scroll_port_db(viewport_t *vport, int lines)
  391. {
  392.     ++vport->paused;
  393.     if (lines > 0) {
  394.         draw_rectangle(vport, 0, 0, vport->width, lines,
  395.                    vport->style.bg_color);
  396.         vport->dboffset += lines;
  397.         vport->dboffset %= vport->height;
  398.     } else if (lines < 0) {
  399.         lines = -lines;
  400.         draw_rectangle(vport, 0, vport->height-lines,
  401.                    vport->width, lines,
  402.                    vport->style.bg_color);
  403.  
  404.         if (vport->dboffset < lines)
  405.             vport->dboffset += vport->height;
  406.         vport->dboffset -= lines;
  407.     }
  408.    
  409.     --vport->paused;
  410.    
  411.     refresh_viewport_db(vport);
  412. }
  413.  
  414. /** Scrolls viewport given number of lines */
  415. static void
  416. scroll_port(viewport_t *vport, int lines)
  417. {
  418.     if (vport->dbdata)
  419.         scroll_port_db(vport, lines);
  420.     else
  421.         scroll_port_nodb(vport, lines);
  422.    
  423. }
  424.  
  425. static void
  426. invert_pixel(viewport_t *vport, unsigned int x, unsigned int y)
  427. {
  428.     putpixel(vport, x, y, ~getpixel(vport, x, y));
  429. }
  430.  
  431.  
  432. /***************************************************************/
  433. /* Character-console functions */
  434.  
  435. /** Draw character at given position
  436.  *
  437.  * @param vport Viewport where the character is printed
  438.  * @param sx Coordinates of top-left of the character
  439.  * @param sy Coordinates of top-left of the character
  440.  * @param style Color of the character
  441.  * @param transparent If false, print background color
  442.  */
  443. static void
  444. draw_glyph(viewport_t *vport,uint8_t glyph, unsigned int sx,
  445.      unsigned int sy, style_t style, int transparent)
  446. {
  447.     int i;
  448.     unsigned int y;
  449.     unsigned int glline;
  450.  
  451.     for (y = 0; y < FONT_SCANLINES; y++) {
  452.         glline = fb_font[glyph * FONT_SCANLINES + y];
  453.         for (i = 0; i < 8; i++) {
  454.             if (glline & (1 << (7 - i)))
  455.                 putpixel(vport, sx + i, sy + y,
  456.                     style.fg_color);
  457.             else if (!transparent)
  458.                 putpixel(vport, sx + i, sy + y,
  459.                     style.bg_color);
  460.         }
  461.     }
  462. }
  463.  
  464. /** Invert character at given position */
  465. static void
  466. invert_char(viewport_t *vport,unsigned int row, unsigned int col)
  467. {
  468.     unsigned int x;
  469.     unsigned int y;
  470.  
  471.     for (x = 0; x < COL_WIDTH; x++)
  472.         for (y = 0; y < FONT_SCANLINES; y++)
  473.             invert_pixel(vport, col * COL_WIDTH + x, row *
  474.                 FONT_SCANLINES + y);
  475. }
  476.  
  477. /***************************************************************/
  478. /* Stdout specific functions */
  479.  
  480.  
  481. /** Create new viewport
  482.  *
  483.  * @return New viewport number
  484.  */
  485. static int
  486. viewport_create(unsigned int x, unsigned int y,unsigned int width,
  487.     unsigned int height)
  488. {
  489.     int i;
  490.  
  491.     for (i = 0; i < MAX_VIEWPORTS; i++) {
  492.         if (!viewports[i].initialized)
  493.             break;
  494.     }
  495.     if (i == MAX_VIEWPORTS)
  496.         return ELIMIT;
  497.  
  498.     viewports[i].x = x;
  499.     viewports[i].y = y;
  500.     viewports[i].width = width;
  501.     viewports[i].height = height;
  502.    
  503.     viewports[i].rows = height / FONT_SCANLINES;
  504.     viewports[i].cols = width / COL_WIDTH;
  505.  
  506.     viewports[i].style.bg_color = DEFAULT_BGCOLOR;
  507.     viewports[i].style.fg_color = DEFAULT_FGCOLOR;
  508.    
  509.     viewports[i].cur_col = 0;
  510.     viewports[i].cur_row = 0;
  511.     viewports[i].cursor_active = 0;
  512.  
  513.     viewports[i].initialized = 1;
  514.  
  515.     return i;
  516. }
  517.  
  518. /** Initialize framebuffer as a chardev output device
  519.  *
  520.  * @param addr          Address of theframebuffer
  521.  * @param xres          Screen width in pixels
  522.  * @param yres          Screen height in pixels
  523.  * @param visual        Bits per pixel (8, 16, 24, 32)
  524.  * @param scan          Bytes per one scanline
  525.  * @param invert_colors Inverted colors.
  526.  *
  527.  */
  528. static bool
  529. screen_init(void *addr, unsigned int xres, unsigned int yres,
  530.     unsigned int scan, unsigned int visual, bool invert_colors)
  531. {
  532.     switch (visual) {
  533.     case VISUAL_INDIRECT_8:
  534.         screen.rgb2scr = rgb_byte8;
  535.         screen.scr2rgb = byte8_rgb;
  536.         screen.pixelbytes = 1;
  537.         break;
  538.     case VISUAL_RGB_5_5_5:
  539.         screen.rgb2scr = rgb_byte555;
  540.         screen.scr2rgb = byte555_rgb;
  541.         screen.pixelbytes = 2;
  542.         break;
  543.     case VISUAL_RGB_5_6_5:
  544.         screen.rgb2scr = rgb_byte565;
  545.         screen.scr2rgb = byte565_rgb;
  546.         screen.pixelbytes = 2;
  547.         break;
  548.     case VISUAL_RGB_8_8_8:
  549.         screen.rgb2scr = rgb_byte888;
  550.         screen.scr2rgb = byte888_rgb;
  551.         screen.pixelbytes = 3;
  552.         break;
  553.     case VISUAL_RGB_8_8_8_0:
  554.         screen.rgb2scr = rgb_byte888;
  555.         screen.scr2rgb = byte888_rgb;
  556.         screen.pixelbytes = 4;
  557.         break;
  558.     case VISUAL_RGB_0_8_8_8:
  559.         screen.rgb2scr = rgb_byte0888;
  560.         screen.scr2rgb = byte0888_rgb;
  561.         screen.pixelbytes = 4;
  562.         break;
  563.     case VISUAL_BGR_0_8_8_8:
  564.         screen.rgb2scr = bgr_byte0888;
  565.         screen.scr2rgb = byte0888_bgr;
  566.         screen.pixelbytes = 4;
  567.         break;
  568.     default:
  569.         return false;
  570.     }
  571.  
  572.     screen.fbaddress = (unsigned char *) addr;
  573.     screen.xres = xres;
  574.     screen.yres = yres;
  575.     screen.scanline = scan;
  576.     screen.invert_colors = invert_colors;
  577.    
  578.     /* Create first viewport */
  579.     viewport_create(0, 0, xres, yres);
  580.    
  581.     return true;
  582. }
  583.  
  584. /** Hide cursor if it is shown */
  585. static void
  586. cursor_hide(viewport_t *vport)
  587. {
  588.     if (vport->cursor_active && vport->cursor_shown) {
  589.         invert_char(vport, vport->cur_row, vport->cur_col);
  590.         vport->cursor_shown = 0;
  591.     }
  592. }
  593.  
  594. /** Show cursor if cursor showing is enabled */
  595. static void
  596. cursor_print(viewport_t *vport)
  597. {
  598.     /* Do not check for cursor_shown */
  599.     if (vport->cursor_active) {
  600.         invert_char(vport, vport->cur_row, vport->cur_col);
  601.         vport->cursor_shown = 1;
  602.     }
  603. }
  604.  
  605. /** Invert cursor, if it is enabled */
  606. static void
  607. cursor_blink(viewport_t *vport)
  608. {
  609.     if (vport->cursor_shown)
  610.         cursor_hide(vport);
  611.     else
  612.         cursor_print(vport);
  613. }
  614.  
  615. /** Draw character at given position relative to viewport
  616.  *
  617.  * @param vport Viewport identification
  618.  * @param c Character to print
  619.  * @param row Screen position relative to viewport
  620.  * @param col Screen position relative to viewport
  621.  * @param transparent If false, print background color with character
  622.  */
  623. static void
  624. draw_char(viewport_t *vport, char c, unsigned int row, unsigned int col,
  625.     style_t style, int transparent)
  626. {
  627.     /* Optimize - do not hide cursor if we are going to overwrite it */
  628.     if (vport->cursor_active && vport->cursor_shown &&
  629.         (vport->cur_col != col || vport->cur_row != row))
  630.         invert_char(vport, vport->cur_row, vport->cur_col);
  631.    
  632.     draw_glyph(vport, c, col * COL_WIDTH, row * FONT_SCANLINES, style,
  633.         transparent);
  634.  
  635.     vport->cur_col = col;
  636.     vport->cur_row = row;
  637.  
  638.     vport->cur_col++;
  639.     if (vport->cur_col >= vport->cols) {
  640.         vport->cur_col = 0;
  641.         vport->cur_row++;
  642.         if (vport->cur_row >= vport->rows)
  643.             vport->cur_row--;
  644.     }
  645.     cursor_print(vport);
  646. }
  647.  
  648. /** Draw text data to viewport
  649.  *
  650.  * @param vport Viewport id
  651.  * @param data Text data fitting exactly into viewport
  652.  */
  653. static void
  654. draw_text_data(viewport_t *vport, keyfield_t *data)
  655. {
  656.     int i;
  657.     int col,row;
  658.  
  659.     clear_port(vport);
  660.     for (i = 0; i < vport->cols * vport->rows; i++) {
  661.         if (data[i].character == ' ' && style_same(data[i].style,
  662.             vport->style))
  663.             continue;
  664.         col = i % vport->cols;
  665.         row = i / vport->cols;
  666.         draw_glyph(vport, data[i].character, col * COL_WIDTH, row *
  667.             FONT_SCANLINES, data[i].style,
  668.             style_same(data[i].style,vport->style));
  669.     }
  670.     cursor_print(vport);
  671. }
  672.  
  673. /** Return first free pixmap */
  674. static int
  675. find_free_pixmap(void)
  676. {
  677.     int i;
  678.    
  679.     for (i = 0;i < MAX_PIXMAPS;i++)
  680.         if (!pixmaps[i].data)
  681.             return i;
  682.     return -1;
  683. }
  684.  
  685. static void
  686. putpixel_pixmap(int pm, unsigned int x, unsigned int y, int color)
  687. {
  688.     pixmap_t *pmap = &pixmaps[pm];
  689.     int pos = (y * pmap->width + x) * screen.pixelbytes;
  690.  
  691.     (*screen.rgb2scr)(&pmap->data[pos],COLOR(color));
  692. }
  693.  
  694. /** Create a new pixmap and return appropriate ID */
  695. static int
  696. shm2pixmap(unsigned char *shm, size_t size)
  697. {
  698.     int pm;
  699.     pixmap_t *pmap;
  700.  
  701.     pm = find_free_pixmap();
  702.     if (pm == -1)
  703.         return ELIMIT;
  704.     pmap = &pixmaps[pm];
  705.    
  706.     if (ppm_get_data(shm, size, &pmap->width, &pmap->height))
  707.         return EINVAL;
  708.    
  709.     pmap->data = malloc(pmap->width * pmap->height * screen.pixelbytes);
  710.     if (!pmap->data)
  711.         return ENOMEM;
  712.  
  713.     ppm_draw(shm, size, 0, 0, pmap->width, pmap->height,
  714.          (putpixel_cb_t)putpixel_pixmap, (void *)pm);
  715.  
  716.     return pm;
  717. }
  718.  
  719. /** Handle shared memory communication calls
  720.  *
  721.  * Protocol for drawing pixmaps:
  722.  * - FB_PREPARE_SHM(client shm identification)
  723.  * - IPC_M_AS_AREA_SEND
  724.  * - FB_DRAW_PPM(startx,starty)
  725.  * - FB_DROP_SHM
  726.  *
  727.  * Protocol for text drawing
  728.  * - IPC_M_AS_AREA_SEND
  729.  * - FB_DRAW_TEXT_DATA
  730.  *
  731.  * @param callid Callid of the current call
  732.  * @param call Current call data
  733.  * @param vp Active viewport
  734.  * @return 0 if the call was not handled byt this function, 1 otherwise
  735.  *
  736.  * note: this function is not threads safe, you would have
  737.  * to redefine static variables with __thread
  738.  */
  739. static int
  740. shm_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  741. {
  742.     static keyfield_t *interbuffer = NULL;
  743.     static size_t intersize = 0;
  744.  
  745.     static unsigned char *shm = NULL;
  746.     static ipcarg_t shm_id = 0;
  747.     static size_t shm_size;
  748.  
  749.     int handled = 1;
  750.     int retval = 0;
  751.     viewport_t *vport = &viewports[vp];
  752.     unsigned int x, y;
  753.  
  754.     switch (IPC_GET_METHOD(*call)) {
  755.     case IPC_M_AS_AREA_SEND:
  756.         /* We accept one area for data interchange */
  757.         if (IPC_GET_ARG1(*call) == shm_id) {
  758.             void *dest = as_get_mappable_page(IPC_GET_ARG2(*call),
  759.                 PAGE_COLOR(IPC_GET_ARG1(*call)));
  760.             shm_size = IPC_GET_ARG2(*call);
  761.             if (!ipc_answer_fast(callid, 0, (sysarg_t) dest, 0))
  762.                 shm = dest;
  763.             else
  764.                 shm_id = 0;
  765.             if (shm[0] != 'P')
  766.                 while (1)
  767.                     ;
  768.             return 1;
  769.         } else {
  770.             intersize = IPC_GET_ARG2(*call);
  771.             receive_comm_area(callid, call, (void *) &interbuffer);
  772.         }
  773.         return 1;
  774.     case FB_PREPARE_SHM:
  775.         if (shm_id)
  776.             retval = EBUSY;
  777.         else
  778.             shm_id = IPC_GET_ARG1(*call);
  779.         break;
  780.        
  781.     case FB_DROP_SHM:
  782.         if (shm) {
  783.             as_area_destroy(shm);
  784.             shm = NULL;
  785.         }
  786.         shm_id = 0;
  787.         break;
  788.  
  789.     case FB_SHM2PIXMAP:
  790.         if (!shm) {
  791.             retval = EINVAL;
  792.             break;
  793.         }
  794.         retval = shm2pixmap(shm, shm_size);
  795.         break;
  796.     case FB_DRAW_PPM:
  797.         if (!shm) {
  798.             retval = EINVAL;
  799.             break;
  800.         }
  801.         x = IPC_GET_ARG1(*call);
  802.         y = IPC_GET_ARG2(*call);
  803.         if (x > vport->width || y > vport->height) {
  804.             retval = EINVAL;
  805.             break;
  806.         }
  807.        
  808.         ppm_draw(shm, shm_size, IPC_GET_ARG1(*call),
  809.             IPC_GET_ARG2(*call), vport->width - x,
  810.             vport->height - y, (putpixel_cb_t)putpixel, vport);
  811.         break;
  812.     case FB_DRAW_TEXT_DATA:
  813.         if (!interbuffer) {
  814.             retval = EINVAL;
  815.             break;
  816.         }
  817.         if (intersize < vport->cols * vport->rows *
  818.             sizeof(*interbuffer)) {
  819.             retval = EINVAL;
  820.             break;
  821.         }
  822.         draw_text_data(vport, interbuffer);
  823.         break;
  824.     default:
  825.         handled = 0;
  826.     }
  827.    
  828.     if (handled)
  829.         ipc_answer_fast(callid, retval, 0, 0);
  830.     return handled;
  831. }
  832.  
  833. static void
  834. copy_vp_to_pixmap(viewport_t *vport, pixmap_t *pmap)
  835. {
  836.     int y;
  837.     int rowsize;
  838.     int tmp;
  839.     int width = vport->width;
  840.     int height = vport->height;
  841.  
  842.     if (width + vport->x > screen.xres)
  843.         width = screen.xres - vport->x;
  844.     if (height + vport->y  > screen.yres)
  845.         height = screen.yres - vport->y;
  846.  
  847.     rowsize = width * screen.pixelbytes;
  848.  
  849.     for (y = 0; y < height; y++) {
  850.         tmp = (vport->y + y) * screen.scanline +
  851.             vport->x * screen.pixelbytes;
  852.         memcpy(pmap->data + rowsize * y, screen.fbaddress + tmp,
  853.             rowsize);
  854.     }
  855. }
  856.  
  857. /** Save viewport to pixmap */
  858. static int
  859. save_vp_to_pixmap(viewport_t *vport)
  860. {
  861.     int pm;
  862.     pixmap_t *pmap;
  863.  
  864.     pm = find_free_pixmap();
  865.     if (pm == -1)
  866.         return ELIMIT;
  867.    
  868.     pmap = &pixmaps[pm];
  869.     pmap->data = malloc(screen.pixelbytes * vport->width * vport->height);
  870.     if (!pmap->data)
  871.         return ENOMEM;
  872.  
  873.     pmap->width = vport->width;
  874.     pmap->height = vport->height;
  875.  
  876.     copy_vp_to_pixmap(vport, pmap);
  877.    
  878.     return pm;
  879. }
  880.  
  881. /** Draw pixmap on screen
  882.  *
  883.  * @param vp Viewport to draw on
  884.  * @param pm Pixmap identifier
  885.  */
  886. static int draw_pixmap(int vp, int pm)
  887. {
  888.     pixmap_t *pmap = &pixmaps[pm];
  889.     viewport_t *vport = &viewports[vp];
  890.     int y;
  891.     int tmp, srcrowsize;
  892.     int realwidth, realheight, realrowsize;
  893.     int width = vport->width;
  894.     int height = vport->height;
  895.  
  896.     if (width + vport->x > screen.xres)
  897.         width = screen.xres - vport->x;
  898.     if (height + vport->y > screen.yres)
  899.         height = screen.yres - vport->y;
  900.  
  901.     if (!pmap->data)
  902.         return EINVAL;
  903.  
  904.     realwidth = pmap->width <= width ? pmap->width : width;
  905.     realheight = pmap->height <= height ? pmap->height : height;
  906.  
  907.     srcrowsize = vport->width * screen.pixelbytes;
  908.     realrowsize = realwidth * screen.pixelbytes;
  909.  
  910.     for (y = 0; y < realheight; y++) {
  911.         tmp = (vport->y + y) * screen.scanline +
  912.             vport->x * screen.pixelbytes;
  913.         memcpy(screen.fbaddress + tmp, pmap->data + y * srcrowsize,
  914.             realrowsize);
  915.     }
  916.     return 0;
  917. }
  918.  
  919. /** Tick animation one step forward */
  920. static void
  921. anims_tick(void)
  922. {
  923.     int i;
  924.     static int counts = 0;
  925.    
  926.     /* Limit redrawing */
  927.     counts = (counts + 1) % 8;
  928.     if (counts)
  929.         return;
  930.  
  931.     for (i = 0; i < MAX_ANIMATIONS; i++) {
  932.         if (!animations[i].animlen || !animations[i].initialized ||
  933.             !animations[i].enabled)
  934.             continue;
  935.         draw_pixmap(animations[i].vp,
  936.             animations[i].pixmaps[animations[i].pos]);
  937.         animations[i].pos = (animations[i].pos + 1) %
  938.             animations[i].animlen;
  939.     }
  940. }
  941.  
  942.  
  943. static int pointer_x, pointer_y;
  944. static int pointer_shown, pointer_enabled;
  945. static int pointer_vport = -1;
  946. static int pointer_pixmap = -1;
  947.  
  948. static void
  949. mouse_show(void)
  950. {
  951.     int i, j;
  952.     int visibility;
  953.     int color;
  954.     int bytepos;
  955.  
  956.     if (pointer_shown || !pointer_enabled)
  957.         return;
  958.  
  959.     /* Save image under the cursor */
  960.     if (pointer_vport == -1) {
  961.         pointer_vport = viewport_create(pointer_x, pointer_y,
  962.             pointer_width, pointer_height);
  963.         if (pointer_vport < 0)
  964.             return;
  965.     } else {
  966.         viewports[pointer_vport].x = pointer_x;
  967.         viewports[pointer_vport].y = pointer_y;
  968.     }
  969.  
  970.     if (pointer_pixmap == -1)
  971.         pointer_pixmap = save_vp_to_pixmap(&viewports[pointer_vport]);
  972.     else
  973.         copy_vp_to_pixmap(&viewports[pointer_vport],
  974.             &pixmaps[pointer_pixmap]);
  975.  
  976.     /* Draw cursor */
  977.     for (i = 0; i < pointer_height; i++)
  978.         for (j = 0; j < pointer_width; j++) {
  979.             bytepos = i * ((pointer_width - 1) / 8 + 1) + j / 8;
  980.             visibility = pointer_mask_bits[bytepos] &
  981.                 (1 << (j % 8));
  982.             if (visibility) {
  983.                 color = pointer_bits[bytepos] & (1 << (j % 8))
  984.                     ? 0 : 0xffffff;
  985.                 if (pointer_x + j < screen.xres && pointer_y +
  986.                     i < screen.yres)
  987.                     putpixel(&viewports[0], pointer_x + j,
  988.                         pointer_y + i, color);
  989.             }
  990.         }
  991.     pointer_shown = 1;
  992. }
  993.  
  994. static void
  995. mouse_hide(void)
  996. {
  997.     /* Restore image under the cursor */
  998.     if (pointer_shown) {
  999.         draw_pixmap(pointer_vport, pointer_pixmap);
  1000.         pointer_shown = 0;
  1001.     }
  1002. }
  1003.  
  1004. static void
  1005. mouse_move(unsigned int x, unsigned int y)
  1006. {
  1007.     mouse_hide();
  1008.     pointer_x = x;
  1009.     pointer_y = y;
  1010.     mouse_show();
  1011. }
  1012.  
  1013. static int
  1014. anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  1015. {
  1016.     int handled = 1;
  1017.     int retval = 0;
  1018.     int i,nvp;
  1019.     int newval;
  1020.  
  1021.     switch (IPC_GET_METHOD(*call)) {
  1022.     case FB_ANIM_CREATE:
  1023.         nvp = IPC_GET_ARG1(*call);
  1024.         if (nvp == -1)
  1025.             nvp = vp;
  1026.         if (nvp >= MAX_VIEWPORTS || nvp < 0 ||
  1027.             !viewports[nvp].initialized) {
  1028.             retval = EINVAL;
  1029.             break;
  1030.         }
  1031.         for (i = 0; i < MAX_ANIMATIONS; i++) {
  1032.             if (!animations[i].initialized)
  1033.                 break;
  1034.         }
  1035.         if (i == MAX_ANIMATIONS) {
  1036.             retval = ELIMIT;
  1037.             break;
  1038.         }
  1039.         animations[i].initialized = 1;
  1040.         animations[i].animlen = 0;
  1041.         animations[i].pos = 0;
  1042.         animations[i].enabled = 0;
  1043.         animations[i].vp = nvp;
  1044.         retval = i;
  1045.         break;
  1046.     case FB_ANIM_DROP:
  1047.         i = IPC_GET_ARG1(*call);
  1048.         if (i >= MAX_ANIMATIONS || i < 0) {
  1049.             retval = EINVAL;
  1050.             break;
  1051.         }
  1052.         animations[i].initialized = 0;
  1053.         break;
  1054.     case FB_ANIM_ADDPIXMAP:
  1055.         i = IPC_GET_ARG1(*call);
  1056.         if (i >= MAX_ANIMATIONS || i < 0 ||
  1057.             !animations[i].initialized) {
  1058.             retval = EINVAL;
  1059.             break;
  1060.         }
  1061.         if (animations[i].animlen == MAX_ANIM_LEN) {
  1062.             retval = ELIMIT;
  1063.             break;
  1064.         }
  1065.         newval = IPC_GET_ARG2(*call);
  1066.         if (newval < 0 || newval > MAX_PIXMAPS ||
  1067.             !pixmaps[newval].data) {
  1068.             retval = EINVAL;
  1069.             break;
  1070.         }
  1071.         animations[i].pixmaps[animations[i].animlen++] = newval;
  1072.         break;
  1073.     case FB_ANIM_CHGVP:
  1074.         i = IPC_GET_ARG1(*call);
  1075.         if (i >= MAX_ANIMATIONS || i < 0) {
  1076.             retval = EINVAL;
  1077.             break;
  1078.         }
  1079.         nvp = IPC_GET_ARG2(*call);
  1080.         if (nvp == -1)
  1081.             nvp = vp;
  1082.         if (nvp >= MAX_VIEWPORTS || nvp < 0 ||
  1083.             !viewports[nvp].initialized) {
  1084.             retval = EINVAL;
  1085.             break;
  1086.         }
  1087.         animations[i].vp = nvp;
  1088.         break;
  1089.     case FB_ANIM_START:
  1090.     case FB_ANIM_STOP:
  1091.         i = IPC_GET_ARG1(*call);
  1092.         if (i >= MAX_ANIMATIONS || i < 0) {
  1093.             retval = EINVAL;
  1094.             break;
  1095.         }
  1096.         newval = (IPC_GET_METHOD(*call) == FB_ANIM_START);
  1097.         if (newval ^ animations[i].enabled) {
  1098.             animations[i].enabled = newval;
  1099.             anims_enabled += newval ? 1 : -1;
  1100.         }
  1101.         break;
  1102.     default:
  1103.         handled = 0;
  1104.     }
  1105.     if (handled)
  1106.         ipc_answer_fast(callid, retval, 0, 0);
  1107.     return handled;
  1108. }
  1109.  
  1110. /** Handler for messages concerning pixmap handling */
  1111. static int
  1112. pixmap_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  1113. {
  1114.     int handled = 1;
  1115.     int retval = 0;
  1116.     int i,nvp;
  1117.  
  1118.     switch (IPC_GET_METHOD(*call)) {
  1119.     case FB_VP_DRAW_PIXMAP:
  1120.         nvp = IPC_GET_ARG1(*call);
  1121.         if (nvp == -1)
  1122.             nvp = vp;
  1123.         if (nvp < 0 || nvp >= MAX_VIEWPORTS ||
  1124.             !viewports[nvp].initialized) {
  1125.             retval = EINVAL;
  1126.             break;
  1127.         }
  1128.         i = IPC_GET_ARG2(*call);
  1129.         retval = draw_pixmap(nvp, i);
  1130.         break;
  1131.     case FB_VP2PIXMAP:
  1132.         nvp = IPC_GET_ARG1(*call);
  1133.         if (nvp == -1)
  1134.             nvp = vp;
  1135.         if (nvp < 0 || nvp >= MAX_VIEWPORTS ||
  1136.             !viewports[nvp].initialized)
  1137.             retval = EINVAL;
  1138.         else
  1139.             retval = save_vp_to_pixmap(&viewports[nvp]);
  1140.         break;
  1141.     case FB_DROP_PIXMAP:
  1142.         i = IPC_GET_ARG1(*call);
  1143.         if (i >= MAX_PIXMAPS) {
  1144.             retval = EINVAL;
  1145.             break;
  1146.         }
  1147.         if (pixmaps[i].data) {
  1148.             free(pixmaps[i].data);
  1149.             pixmaps[i].data = NULL;
  1150.         }
  1151.         break;
  1152.     default:
  1153.         handled = 0;
  1154.     }
  1155.  
  1156.     if (handled)
  1157.         ipc_answer_fast(callid, retval, 0, 0);
  1158.     return handled;
  1159.    
  1160. }
  1161.  
  1162. /** Function for handling connections to FB
  1163.  *
  1164.  */
  1165. static void
  1166. fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
  1167. {
  1168.     ipc_callid_t callid;
  1169.     ipc_call_t call;
  1170.     int retval;
  1171.     int i;
  1172.     unsigned int row,col;
  1173.     char c;
  1174.  
  1175.     int vp = 0;
  1176.     viewport_t *vport = &viewports[0];
  1177.  
  1178.     if (client_connected) {
  1179.         ipc_answer_fast(iid, ELIMIT, 0,0);
  1180.         return;
  1181.     }
  1182.     client_connected = 1;
  1183.     ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
  1184.  
  1185.     while (1) {
  1186.         if (vport->cursor_active || anims_enabled)
  1187.             callid = async_get_call_timeout(&call, 250000);
  1188.         else
  1189.             callid = async_get_call(&call);
  1190.  
  1191.         mouse_hide();
  1192.         if (!callid) {
  1193.             cursor_blink(vport);
  1194.             anims_tick();
  1195.             mouse_show();
  1196.             continue;
  1197.         }
  1198.         if (shm_handle(callid, &call, vp))
  1199.             continue;
  1200.         if (pixmap_handle(callid, &call, vp))
  1201.             continue;
  1202.         if (anim_handle(callid, &call, vp))
  1203.             continue;
  1204.  
  1205.         switch (IPC_GET_METHOD(call)) {
  1206.         case IPC_M_PHONE_HUNGUP:
  1207.             client_connected = 0;
  1208.             /* cleanup other viewports */
  1209.             for (i = 1; i < MAX_VIEWPORTS; i++)
  1210.                 vport->initialized = 0;
  1211.             return; /* Exit thread */
  1212.  
  1213.         case FB_PUTCHAR:
  1214.         case FB_TRANS_PUTCHAR:
  1215.             c = IPC_GET_ARG1(call);
  1216.             row = IPC_GET_ARG2(call);
  1217.             col = IPC_GET_ARG3(call);
  1218.             if (row >= vport->rows || col >= vport->cols) {
  1219.                 retval = EINVAL;
  1220.                 break;
  1221.             }
  1222.             ipc_answer_fast(callid, 0, 0, 0);
  1223.  
  1224.             draw_char(vport, c, row, col, vport->style,
  1225.                 IPC_GET_METHOD(call) == FB_TRANS_PUTCHAR);
  1226.             continue; /* msg already answered */
  1227.         case FB_CLEAR:
  1228.             clear_port(vport);
  1229.             cursor_print(vport);
  1230.             retval = 0;
  1231.             break;
  1232.         case FB_CURSOR_GOTO:
  1233.             row = IPC_GET_ARG1(call);
  1234.             col = IPC_GET_ARG2(call);
  1235.             if (row >= vport->rows || col >= vport->cols) {
  1236.                 retval = EINVAL;
  1237.                 break;
  1238.             }
  1239.             retval = 0;
  1240.             cursor_hide(vport);
  1241.             vport->cur_col = col;
  1242.             vport->cur_row = row;
  1243.             cursor_print(vport);
  1244.             break;
  1245.         case FB_CURSOR_VISIBILITY:
  1246.             cursor_hide(vport);
  1247.             vport->cursor_active = IPC_GET_ARG1(call);
  1248.             cursor_print(vport);
  1249.             retval = 0;
  1250.             break;
  1251.         case FB_GET_CSIZE:
  1252.             ipc_answer_fast(callid, 0, vport->rows, vport->cols);
  1253.             continue;
  1254.         case FB_SCROLL:
  1255.             i = IPC_GET_ARG1(call);
  1256.             if (i > vport->rows || i < (- (int)vport->rows)) {
  1257.                 retval = EINVAL;
  1258.                 break;
  1259.             }
  1260.             cursor_hide(vport);
  1261.             scroll_port(vport, i*FONT_SCANLINES);
  1262.             cursor_print(vport);
  1263.             retval = 0;
  1264.             break;
  1265.         case FB_VIEWPORT_DB:
  1266.             /* Enable double buffering */
  1267.             i = IPC_GET_ARG1(call);
  1268.             if (i == -1)
  1269.                 i = vp;
  1270.             if (i < 0 || i >= MAX_VIEWPORTS) {
  1271.                 retval = EINVAL;
  1272.                 break;
  1273.             }
  1274.             if (! viewports[i].initialized ) {
  1275.                 retval = EADDRNOTAVAIL;
  1276.                 break;
  1277.             }
  1278.             viewports[i].dboffset = 0;
  1279.             if (IPC_GET_ARG2(call) == 1 && !viewports[i].dbdata)
  1280.                 viewports[i].dbdata = malloc(screen.pixelbytes
  1281.                     * viewports[i].width *
  1282.                     viewports[i].height);
  1283.             else if (IPC_GET_ARG2(call) == 0 &&
  1284.                 viewports[i].dbdata) {
  1285.                 free(viewports[i].dbdata);
  1286.                 viewports[i].dbdata = NULL;
  1287.             }
  1288.             retval = 0;
  1289.             break;
  1290.         case FB_VIEWPORT_SWITCH:
  1291.             i = IPC_GET_ARG1(call);
  1292.             if (i < 0 || i >= MAX_VIEWPORTS) {
  1293.                 retval = EINVAL;
  1294.                 break;
  1295.             }
  1296.             if (! viewports[i].initialized ) {
  1297.                 retval = EADDRNOTAVAIL;
  1298.                 break;
  1299.             }
  1300.             cursor_hide(vport);
  1301.             vp = i;
  1302.             vport = &viewports[vp];
  1303.             cursor_print(vport);
  1304.             retval = 0;
  1305.             break;
  1306.         case FB_VIEWPORT_CREATE:
  1307.             retval = viewport_create(IPC_GET_ARG1(call) >> 16,
  1308.                 IPC_GET_ARG1(call) & 0xffff,
  1309.                 IPC_GET_ARG2(call) >> 16,
  1310.                 IPC_GET_ARG2(call) & 0xffff);
  1311.             break;
  1312.         case FB_VIEWPORT_DELETE:
  1313.             i = IPC_GET_ARG1(call);
  1314.             if (i < 0 || i >= MAX_VIEWPORTS) {
  1315.                 retval = EINVAL;
  1316.                 break;
  1317.             }
  1318.             if (! viewports[i].initialized ) {
  1319.                 retval = EADDRNOTAVAIL;
  1320.                 break;
  1321.             }
  1322.             viewports[i].initialized = 0;
  1323.             if (viewports[i].dbdata) {
  1324.                 free(viewports[i].dbdata);
  1325.                 viewports[i].dbdata = NULL;
  1326.             }
  1327.             retval = 0;
  1328.             break;
  1329.         case FB_SET_STYLE:
  1330.             vport->style.fg_color = IPC_GET_ARG1(call);
  1331.             vport->style.bg_color = IPC_GET_ARG2(call);
  1332.             retval = 0;
  1333.             break;
  1334.         case FB_GET_RESOLUTION:
  1335.             ipc_answer_fast(callid, 0, screen.xres,screen.yres);
  1336.             continue;
  1337.         case FB_POINTER_MOVE:
  1338.             pointer_enabled = 1;
  1339.             mouse_move(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
  1340.             retval = 0;
  1341.             break;
  1342.         default:
  1343.             retval = ENOENT;
  1344.         }
  1345.         ipc_answer_fast(callid,retval, 0, 0);
  1346.     }
  1347. }
  1348.  
  1349. /** Initialization of framebuffer */
  1350. int
  1351. fb_init(void)
  1352. {
  1353.     void *fb_ph_addr;
  1354.     unsigned int fb_width;
  1355.     unsigned int fb_height;
  1356.     unsigned int fb_scanline;
  1357.     unsigned int fb_visual;
  1358.     bool fb_invert_colors;
  1359.     void *fb_addr;
  1360.     size_t asz;
  1361.  
  1362.     async_set_client_connection(fb_client_connection);
  1363.  
  1364.     fb_ph_addr = (void *) sysinfo_value("fb.address.physical");
  1365.     fb_width = sysinfo_value("fb.width");
  1366.     fb_height = sysinfo_value("fb.height");
  1367.     fb_scanline = sysinfo_value("fb.scanline");
  1368.     fb_visual = sysinfo_value("fb.visual");
  1369.     fb_invert_colors = sysinfo_value("fb.invert-colors");
  1370.  
  1371.     asz = fb_scanline * fb_height;
  1372.     fb_addr = as_get_mappable_page(asz, (int)
  1373.         sysinfo_value("fb.address.color"));
  1374.    
  1375.     physmem_map(fb_ph_addr, fb_addr, ALIGN_UP(asz, PAGE_SIZE) >>
  1376.         PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE);
  1377.  
  1378.     if (screen_init(fb_addr, fb_width, fb_height, fb_scanline, fb_visual,
  1379.         fb_invert_colors))
  1380.         return 0;
  1381.    
  1382.     return -1;
  1383. }
  1384.  
  1385. /**
  1386.  * @}
  1387.  */
  1388.