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  1. /*
  2.  * Copyright (c) 2008 Martin Decky
  3.  * Copyright (c) 2006 Jakub Vana
  4.  * Copyright (c) 2006 Ondrej Palkovsky
  5.  * All rights reserved.
  6.  *
  7.  * Redistribution and use in source and binary forms, with or without
  8.  * modification, are permitted provided that the following conditions
  9.  * are met:
  10.  *
  11.  * - Redistributions of source code must retain the above copyright
  12.  *   notice, this list of conditions and the following disclaimer.
  13.  * - Redistributions in binary form must reproduce the above copyright
  14.  *   notice, this list of conditions and the following disclaimer in the
  15.  *   documentation and/or other materials provided with the distribution.
  16.  * - The name of the author may not be used to endorse or promote products
  17.  *   derived from this software without specific prior written permission.
  18.  *
  19.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29.  */
  30.  
  31. /**
  32.  * @defgroup fb Graphical framebuffer
  33.  * @brief HelenOS graphical framebuffer.
  34.  * @ingroup fbs
  35.  * @{
  36.  */
  37.  
  38. /** @file
  39.  */
  40.  
  41. #include <stdlib.h>
  42. #include <unistd.h>
  43. #include <string.h>
  44. #include <ddi.h>
  45. #include <sysinfo.h>
  46. #include <align.h>
  47. #include <as.h>
  48. #include <ipc/fb.h>
  49. #include <ipc/ipc.h>
  50. #include <ipc/ns.h>
  51. #include <ipc/services.h>
  52. #include <kernel/errno.h>
  53. #include <kernel/genarch/fb/visuals.h>
  54. #include <console/color.h>
  55. #include <console/style.h>
  56. #include <async.h>
  57. #include <bool.h>
  58.  
  59. #include "font-8x16.h"
  60. #include "fb.h"
  61. #include "main.h"
  62. #include "../console/screenbuffer.h"
  63. #include "ppm.h"
  64.  
  65. #include "pointer.xbm"
  66. #include "pointer_mask.xbm"
  67.  
  68. #define DEFAULT_BGCOLOR  0xf0f0f0
  69. #define DEFAULT_FGCOLOR  0x000000
  70.  
  71. #define GLYPH_UNAVAIL    '?'
  72.  
  73. #define MAX_ANIM_LEN     8
  74. #define MAX_ANIMATIONS   4
  75. #define MAX_PIXMAPS      256  /**< Maximum number of saved pixmaps */
  76. #define MAX_VIEWPORTS    128  /**< Viewport is a rectangular area on the screen */
  77.  
  78. /** Function to render a pixel from a RGB value. */
  79. typedef void (*rgb_conv_t)(void *, uint32_t);
  80.  
  81. /** Function to render a bit mask. */
  82. typedef void (*mask_conv_t)(void *, bool);
  83.  
  84. /** Function to draw a glyph. */
  85. typedef void (*dg_t)(unsigned int x, unsigned int y, bool cursor,
  86.     uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
  87.  
  88. struct {
  89.     uint8_t *fb_addr;
  90.    
  91.     unsigned int xres;
  92.     unsigned int yres;
  93.    
  94.     unsigned int scanline;
  95.     unsigned int glyphscanline;
  96.    
  97.     unsigned int pixelbytes;
  98.     unsigned int glyphbytes;
  99.    
  100.     /** Pre-rendered mask for rendering glyphs. Specific for the visual. */
  101.     uint8_t *glyphs;
  102.    
  103.     rgb_conv_t rgb_conv;
  104.     mask_conv_t mask_conv;
  105. } screen;
  106.  
  107. /** Backbuffer character cell. */
  108. typedef struct {
  109.     uint32_t glyph;
  110.     uint32_t fg_color;
  111.     uint32_t bg_color;
  112. } bb_cell_t;
  113.  
  114. typedef struct {
  115.     bool initialized;
  116.     unsigned int x;
  117.     unsigned int y;
  118.     unsigned int width;
  119.     unsigned int height;
  120.    
  121.     /* Text support in window */
  122.     unsigned int cols;
  123.     unsigned int rows;
  124.    
  125.     /*
  126.      * Style and glyphs for text printing
  127.      */
  128.    
  129.     /** Current attributes. */
  130.     attr_rgb_t attr;
  131.    
  132.     uint8_t *bgpixel;
  133.    
  134.     /**
  135.      * Glyph drawing function for this viewport.  Different viewports
  136.      * might use different drawing functions depending on whether their
  137.      * scanlines are aligned on a word boundary.
  138.      */
  139.     dg_t dglyph;
  140.    
  141.     /* Auto-cursor position */
  142.     bool cursor_active;
  143.     unsigned int cur_col;
  144.     unsigned int cur_row;
  145.     bool cursor_shown;
  146.    
  147.     /* Back buffer */
  148.     bb_cell_t *backbuf;
  149.     unsigned int bbsize;
  150. } viewport_t;
  151.  
  152. typedef struct {
  153.     bool initialized;
  154.     bool enabled;
  155.     unsigned int vp;
  156.    
  157.     unsigned int pos;
  158.     unsigned int animlen;
  159.     unsigned int pixmaps[MAX_ANIM_LEN];
  160. } animation_t;
  161.  
  162. static animation_t animations[MAX_ANIMATIONS];
  163. static bool anims_enabled;
  164.  
  165. typedef struct {
  166.     unsigned int width;
  167.     unsigned int height;
  168.     uint8_t *data;
  169. } pixmap_t;
  170.  
  171. static pixmap_t pixmaps[MAX_PIXMAPS];
  172. static viewport_t viewports[128];
  173.  
  174. static bool client_connected = false;  /**< Allow only 1 connection */
  175.  
  176. static uint32_t color_table[16] = {
  177.     [COLOR_BLACK]       = 0x000000,
  178.     [COLOR_BLUE]        = 0x0000f0,
  179.     [COLOR_GREEN]       = 0x00f000,
  180.     [COLOR_CYAN]        = 0x00f0f0,
  181.     [COLOR_RED]         = 0xf00000,
  182.     [COLOR_MAGENTA]     = 0xf000f0,
  183.     [COLOR_YELLOW]      = 0xf0f000,
  184.     [COLOR_WHITE]       = 0xf0f0f0,
  185.    
  186.     [8 + COLOR_BLACK]   = 0x000000,
  187.     [8 + COLOR_BLUE]    = 0x0000ff,
  188.     [8 + COLOR_GREEN]   = 0x00ff00,
  189.     [8 + COLOR_CYAN]    = 0x00ffff,
  190.     [8 + COLOR_RED]     = 0xff0000,
  191.     [8 + COLOR_MAGENTA] = 0xff00ff,
  192.     [8 + COLOR_YELLOW]  = 0xffff00,
  193.     [8 + COLOR_WHITE]   = 0xffffff,
  194. };
  195.  
  196. static int rgb_from_attr(attr_rgb_t *rgb, const attrs_t *a);
  197. static int rgb_from_style(attr_rgb_t *rgb, int style);
  198. static int rgb_from_idx(attr_rgb_t *rgb, ipcarg_t fg_color,
  199.     ipcarg_t bg_color, ipcarg_t flags);
  200.  
  201. static int fb_set_color(viewport_t *vport, ipcarg_t fg_color,
  202.     ipcarg_t bg_color, ipcarg_t attr);
  203.  
  204. static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
  205.     uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
  206. static void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
  207.     uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color);
  208.  
  209. static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
  210.     unsigned int row);
  211.  
  212.  
  213. #define RED(x, bits)                 ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
  214. #define GREEN(x, bits)               ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
  215. #define BLUE(x, bits)                ((x >> (8 - bits)) & ((1 << bits) - 1))
  216.  
  217. #define COL2X(col)                   ((col) * FONT_WIDTH)
  218. #define ROW2Y(row)                   ((row) * FONT_SCANLINES)
  219.  
  220. #define X2COL(x)                     ((x) / FONT_WIDTH)
  221. #define Y2ROW(y)                     ((y) / FONT_SCANLINES)
  222.  
  223. #define FB_POS(x, y)                 ((y) * screen.scanline + (x) * screen.pixelbytes)
  224. #define BB_POS(vport, col, row)      ((row) * vport->cols + (col))
  225. #define GLYPH_POS(glyph, y, cursor)  (((glyph) + (cursor) * FONT_GLYPHS) * screen.glyphbytes + (y) * screen.glyphscanline)
  226.  
  227.  
  228. /** ARGB 8:8:8:8 conversion
  229.  *
  230.  */
  231. static void rgb_0888(void *dst, uint32_t rgb)
  232. {
  233.     *((uint32_t *) dst) = rgb & 0x00ffffff;
  234. }
  235.  
  236. static void mask_0888(void *dst, bool mask)
  237. {
  238.     *((uint32_t *) dst) = (mask ? 0x00ffffff : 0);
  239. }
  240.  
  241.  
  242. /** ABGR 8:8:8:8 conversion
  243.  *
  244.  */
  245. static void bgr_0888(void *dst, uint32_t rgb)
  246. {
  247.     *((uint32_t *) dst)
  248.         = (BLUE(rgb, 8) << 16) | (GREEN(rgb, 8) << 8) | RED(rgb, 8);
  249. }
  250.  
  251.  
  252. /** RGB 8:8:8 conversion
  253.  *
  254.  */
  255. static void rgb_888(void *dst, uint32_t rgb)
  256. {
  257.     ((uint8_t *) dst)[0] = BLUE(rgb, 8);
  258.     ((uint8_t *) dst)[1] = GREEN(rgb, 8);
  259.     ((uint8_t *) dst)[2] = RED(rgb, 8);
  260. }
  261.  
  262. static void mask_888(void *dst, bool mask)
  263. {
  264.     if (mask) {
  265.         ((uint8_t *) dst)[0] = 0xff;
  266.         ((uint8_t *) dst)[1] = 0xff;
  267.         ((uint8_t *) dst)[2] = 0xff;
  268.     } else {
  269.         ((uint8_t *) dst)[0] = 0;
  270.         ((uint8_t *) dst)[1] = 0;
  271.         ((uint8_t *) dst)[2] = 0;
  272.     }
  273. }
  274.  
  275.  
  276. /** BGR 8:8:8 conversion
  277.  *
  278.  */
  279. static void bgr_888(void *dst, uint32_t rgb)
  280. {
  281.     ((uint8_t *) dst)[0] = RED(rgb, 8);
  282.     ((uint8_t *) dst)[1] = GREEN(rgb, 8);
  283.     ((uint8_t *) dst)[2] = BLUE(rgb, 8);
  284. }
  285.  
  286.  
  287. /** RGB 5:5:5 conversion
  288.  *
  289.  */
  290. static void rgb_555(void *dst, uint32_t rgb)
  291. {
  292.     *((uint16_t *) dst)
  293.         = (RED(rgb, 5) << 10) | (GREEN(rgb, 5) << 5) | BLUE(rgb, 5);
  294. }
  295.  
  296. static void mask_555(void *dst, bool mask)
  297. {
  298.     *((uint16_t *) dst) = (mask ? 0x7fff : 0);
  299. }
  300.  
  301.  
  302. /** RGB 5:6:5 conversion
  303.  *
  304.  */
  305. static void rgb_565(void *dst, uint32_t rgb)
  306. {
  307.     *((uint16_t *) dst)
  308.         = (RED(rgb, 5) << 11) | (GREEN(rgb, 6) << 5) | BLUE(rgb, 5);
  309. }
  310.  
  311. static void mask_565(void *dst, bool mask)
  312. {
  313.     *((uint16_t *) dst) = (mask ? 0xffff : 0);
  314. }
  315.  
  316.  
  317. /** RGB 3:2:3
  318.  *
  319.  */
  320. static void rgb_323(void *dst, uint32_t rgb)
  321. {
  322.     *((uint8_t *) dst)
  323.         = ~((RED(rgb, 3) << 5) | (GREEN(rgb, 2) << 3) | BLUE(rgb, 3));
  324. }
  325.  
  326. static void mask_323(void *dst, bool mask)
  327. {
  328.     *((uint8_t *) dst) = (mask ? 0xff : 0);
  329. }
  330.  
  331. /** Draw a filled rectangle.
  332.  *
  333.  * @note Need real implementation that does not access VRAM twice.
  334.  *
  335.  */
  336. static void draw_filled_rect(unsigned int x0, unsigned int y0, unsigned int x1,
  337.     unsigned int y1, uint32_t color)
  338. {
  339.     unsigned int x;
  340.     unsigned int y;
  341.     unsigned int copy_bytes;
  342.    
  343.     uint8_t *sp;
  344.     uint8_t *dp;
  345.     uint8_t cbuf[4];
  346.    
  347.     if ((y0 >= y1) || (x0 >= x1))
  348.         return;
  349.    
  350.     screen.rgb_conv(cbuf, color);
  351.    
  352.     sp = &screen.fb_addr[FB_POS(x0, y0)];
  353.     dp = sp;
  354.    
  355.     /* Draw the first line. */
  356.     for (x = x0; x < x1; x++) {
  357.         memcpy(dp, cbuf, screen.pixelbytes);
  358.         dp += screen.pixelbytes;
  359.     }
  360.    
  361.     dp = sp + screen.scanline;
  362.     copy_bytes = (x1 - x0) * screen.pixelbytes;
  363.    
  364.     /* Draw the remaining lines by copying. */
  365.     for (y = y0 + 1; y < y1; y++) {
  366.         memcpy(dp, sp, copy_bytes);
  367.         dp += screen.scanline;
  368.     }
  369. }
  370.  
  371. /** Redraw viewport.
  372.  *
  373.  * @param vport Viewport to redraw
  374.  *
  375.  */
  376. static void vport_redraw(viewport_t *vport)
  377. {
  378.     unsigned int row;
  379.     unsigned int col;
  380.    
  381.     for (row = 0; row < vport->rows; row++) {
  382.         for (col = 0; col < vport->cols; col++) {
  383.             draw_vp_glyph(vport, false, col, row);
  384.         }
  385.     }
  386.    
  387.     if (COL2X(vport->cols) < vport->width) {
  388.         draw_filled_rect(
  389.             vport->x + COL2X(vport->cols), vport->y,
  390.             vport->x + vport->width, vport->y + vport->height,
  391.             vport->attr.bg_color);
  392.     }
  393.    
  394.     if (ROW2Y(vport->rows) < vport->height) {
  395.         draw_filled_rect(
  396.             vport->x, vport->y + ROW2Y(vport->rows),
  397.             vport->x + vport->width, vport->y + vport->height,
  398.             vport->attr.bg_color);
  399.     }
  400. }
  401.  
  402. static void backbuf_clear(bb_cell_t *backbuf, size_t len, uint32_t fg_color,
  403.     uint32_t bg_color)
  404. {
  405.     size_t i;
  406.    
  407.     for (i = 0; i < len; i++) {
  408.         backbuf[i].glyph = 0;
  409.         backbuf[i].fg_color = fg_color;
  410.         backbuf[i].bg_color = bg_color;
  411.     }
  412. }
  413.  
  414. /** Clear viewport.
  415.  *
  416.  * @param vport Viewport to clear
  417.  *
  418.  */
  419. static void vport_clear(viewport_t *vport)
  420. {
  421.     backbuf_clear(vport->backbuf, vport->cols * vport->rows,
  422.         vport->attr.fg_color, vport->attr.bg_color);
  423.     vport_redraw(vport);
  424. }
  425.  
  426. /** Scroll viewport by the specified number of lines.
  427.  *
  428.  * @param vport Viewport to scroll
  429.  * @param lines Number of lines to scroll
  430.  *
  431.  */
  432. static void vport_scroll(viewport_t *vport, int lines)
  433. {
  434.     unsigned int row;
  435.     unsigned int col;
  436.     unsigned int x;
  437.     unsigned int y;
  438.     uint32_t glyph;
  439.     uint32_t fg_color;
  440.     uint32_t bg_color;
  441.     bb_cell_t *bbp;
  442.     bb_cell_t *xbp;
  443.    
  444.     /*
  445.      * Redraw.
  446.      */
  447.    
  448.     y = vport->y;
  449.     for (row = 0; row < vport->rows; row++) {
  450.         x = vport->x;
  451.         for (col = 0; col < vport->cols; col++) {
  452.             if ((row + lines >= 0) && (row + lines < vport->rows)) {
  453.                 xbp = &vport->backbuf[BB_POS(vport, col, row + lines)];
  454.                 bbp = &vport->backbuf[BB_POS(vport, col, row)];
  455.                
  456.                 glyph = xbp->glyph;
  457.                 fg_color = xbp->fg_color;
  458.                 bg_color = xbp->bg_color;
  459.                
  460.                 if ((bbp->glyph == glyph)
  461.                    && (bbp->fg_color == xbp->fg_color)
  462.                    && (bbp->bg_color == xbp->bg_color)) {
  463.                     x += FONT_WIDTH;
  464.                     continue;
  465.                 }
  466.             } else {
  467.                 glyph = 0;
  468.                 fg_color = vport->attr.fg_color;
  469.                 bg_color = vport->attr.bg_color;
  470.             }
  471.            
  472.             (*vport->dglyph)(x, y, false, screen.glyphs, glyph,
  473.                 fg_color, bg_color);
  474.             x += FONT_WIDTH;
  475.         }
  476.         y += FONT_SCANLINES;
  477.     }
  478.    
  479.     /*
  480.      * Scroll backbuffer.
  481.      */
  482.    
  483.     if (lines > 0) {
  484.         memmove(vport->backbuf, vport->backbuf + vport->cols * lines,
  485.             vport->cols * (vport->rows - lines) * sizeof(bb_cell_t));
  486.         backbuf_clear(&vport->backbuf[BB_POS(vport, 0, vport->rows - lines)],
  487.             vport->cols * lines, vport->attr.fg_color, vport->attr.bg_color);
  488.     } else {
  489.         memmove(vport->backbuf - vport->cols * lines, vport->backbuf,
  490.             vport->cols * (vport->rows + lines) * sizeof(bb_cell_t));
  491.         backbuf_clear(vport->backbuf, - vport->cols * lines,
  492.             vport->attr.fg_color, vport->attr.bg_color);
  493.     }
  494. }
  495.  
  496. /** Render glyphs
  497.  *
  498.  * Convert glyphs from device independent font
  499.  * description to current visual representation.
  500.  *
  501.  */
  502. static void render_glyphs(void)
  503. {
  504.     unsigned int glyph;
  505.    
  506.     for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
  507.         unsigned int y;
  508.        
  509.         for (y = 0; y < FONT_SCANLINES; y++) {
  510.             unsigned int x;
  511.            
  512.             for (x = 0; x < FONT_WIDTH; x++) {
  513.                 screen.mask_conv(&screen.glyphs[GLYPH_POS(glyph, y, false) + x * screen.pixelbytes],
  514.                     (fb_font[glyph][y] & (1 << (7 - x))) ? true : false);
  515.                
  516.                 screen.mask_conv(&screen.glyphs[GLYPH_POS(glyph, y, true) + x * screen.pixelbytes],
  517.                     (fb_font[glyph][y] & (1 << (7 - x))) ? false : true);
  518.             }
  519.         }
  520.     }
  521. }
  522.  
  523. /** Create new viewport
  524.  *
  525.  * @param x      Origin of the viewport (x).
  526.  * @param y      Origin of the viewport (y).
  527.  * @param width  Width of the viewport.
  528.  * @param height Height of the viewport.
  529.  *
  530.  * @return New viewport number.
  531.  *
  532.  */
  533. static int vport_create(unsigned int x, unsigned int y,
  534.     unsigned int width, unsigned int height)
  535. {
  536.     unsigned int i;
  537.    
  538.     for (i = 0; i < MAX_VIEWPORTS; i++) {
  539.         if (!viewports[i].initialized)
  540.             break;
  541.     }
  542.    
  543.     if (i == MAX_VIEWPORTS)
  544.         return ELIMIT;
  545.    
  546.     unsigned int cols = width / FONT_WIDTH;
  547.     unsigned int rows = height / FONT_SCANLINES;
  548.     unsigned int bbsize = cols * rows * sizeof(bb_cell_t);
  549.     unsigned int word_size = sizeof(unsigned long);
  550.    
  551.     bb_cell_t *backbuf = (bb_cell_t *) malloc(bbsize);
  552.     if (!backbuf)
  553.         return ENOMEM;
  554.    
  555.     uint8_t *bgpixel = (uint8_t *) malloc(screen.pixelbytes);
  556.     if (!bgpixel) {
  557.         free(backbuf);
  558.         return ENOMEM;
  559.     }
  560.    
  561.     backbuf_clear(backbuf, cols * rows, DEFAULT_FGCOLOR, DEFAULT_BGCOLOR);
  562.     memset(bgpixel, 0, screen.pixelbytes);
  563.    
  564.     viewports[i].x = x;
  565.     viewports[i].y = y;
  566.     viewports[i].width = width;
  567.     viewports[i].height = height;
  568.    
  569.     viewports[i].cols = cols;
  570.     viewports[i].rows = rows;
  571.    
  572.     viewports[i].attr.bg_color = DEFAULT_BGCOLOR;
  573.     viewports[i].attr.fg_color = DEFAULT_FGCOLOR;
  574.    
  575.     viewports[i].bgpixel = bgpixel;
  576.    
  577.     /*
  578.      * Conditions necessary to select aligned version:
  579.      *  - word size is divisible by pixelbytes
  580.      *  - cell scanline size is divisible by word size
  581.      *  - cell scanlines are word-aligned
  582.      *
  583.      */
  584.     if (((word_size % screen.pixelbytes) == 0)
  585.         && ((FONT_WIDTH * screen.pixelbytes) % word_size == 0)
  586.         && ((x * screen.pixelbytes) % word_size == 0)
  587.         && (screen.scanline % word_size == 0)) {
  588.         viewports[i].dglyph = draw_glyph_aligned;
  589.     } else {
  590.         viewports[i].dglyph = draw_glyph_fallback;
  591.     }
  592.    
  593.     viewports[i].cur_col = 0;
  594.     viewports[i].cur_row = 0;
  595.     viewports[i].cursor_active = false;
  596.     viewports[i].cursor_shown = false;
  597.    
  598.     viewports[i].bbsize = bbsize;
  599.     viewports[i].backbuf = backbuf;
  600.    
  601.     viewports[i].initialized = true;
  602.    
  603.     screen.rgb_conv(viewports[i].bgpixel, viewports[i].attr.bg_color);
  604.    
  605.     return i;
  606. }
  607.  
  608.  
  609. /** Initialize framebuffer as a chardev output device
  610.  *
  611.  * @param addr   Address of the framebuffer
  612.  * @param xres   Screen width in pixels
  613.  * @param yres   Screen height in pixels
  614.  * @param visual Bits per pixel (8, 16, 24, 32)
  615.  * @param scan   Bytes per one scanline
  616.  *
  617.  */
  618. static bool screen_init(void *addr, unsigned int xres, unsigned int yres,
  619.     unsigned int scan, unsigned int visual)
  620. {
  621.    
  622.    
  623.     switch (visual) {
  624.     case VISUAL_INDIRECT_8:
  625.         screen.rgb_conv = rgb_323;
  626.         screen.mask_conv = mask_323;
  627.         screen.pixelbytes = 1;
  628.         break;
  629.     case VISUAL_RGB_5_5_5:
  630.         screen.rgb_conv = rgb_555;
  631.         screen.mask_conv = mask_555;
  632.         screen.pixelbytes = 2;
  633.         break;
  634.     case VISUAL_RGB_5_6_5:
  635.         screen.rgb_conv = rgb_565;
  636.         screen.mask_conv = mask_565;
  637.         screen.pixelbytes = 2;
  638.         break;
  639.     case VISUAL_RGB_8_8_8:
  640.         screen.rgb_conv = rgb_888;
  641.         screen.mask_conv = mask_888;
  642.         screen.pixelbytes = 3;
  643.         break;
  644.     case VISUAL_BGR_8_8_8:
  645.         screen.rgb_conv = bgr_888;
  646.         screen.mask_conv = mask_888;
  647.         screen.pixelbytes = 3;
  648.         break;
  649.     case VISUAL_RGB_8_8_8_0:
  650.         screen.rgb_conv = rgb_888;
  651.         screen.mask_conv = mask_888;
  652.         screen.pixelbytes = 4;
  653.         break;
  654.     case VISUAL_RGB_0_8_8_8:
  655.         screen.rgb_conv = rgb_0888;
  656.         screen.mask_conv = mask_0888;
  657.         screen.pixelbytes = 4;
  658.         break;
  659.     case VISUAL_BGR_0_8_8_8:
  660.         screen.rgb_conv = bgr_0888;
  661.         screen.mask_conv = mask_0888;
  662.         screen.pixelbytes = 4;
  663.         break;
  664.     default:
  665.         return false;
  666.     }
  667.    
  668.     screen.fb_addr = (unsigned char *) addr;
  669.     screen.xres = xres;
  670.     screen.yres = yres;
  671.     screen.scanline = scan;
  672.    
  673.     screen.glyphscanline = FONT_WIDTH * screen.pixelbytes;
  674.     screen.glyphbytes = screen.glyphscanline * FONT_SCANLINES;
  675.    
  676.     size_t glyphsize = 2 * FONT_GLYPHS * screen.glyphbytes;
  677.     uint8_t *glyphs = (uint8_t *) malloc(glyphsize);
  678.     if (!glyphs)
  679.         return false;
  680.    
  681.     memset(glyphs, 0, glyphsize);
  682.     screen.glyphs = glyphs;
  683.    
  684.     render_glyphs();
  685.    
  686.     /* Create first viewport */
  687.     vport_create(0, 0, xres, yres);
  688.    
  689.     return true;
  690. }
  691.  
  692.  
  693. /** Draw a glyph, takes advantage of alignment.
  694.  *
  695.  * This version can only be used if the following conditions are met:
  696.  *
  697.  *   - word size is divisible by pixelbytes
  698.  *   - cell scanline size is divisible by word size
  699.  *   - cell scanlines are word-aligned
  700.  *
  701.  * It makes use of the pre-rendered mask to process (possibly) several
  702.  * pixels at once (word size / pixelbytes pixels at a time are processed)
  703.  * making it very fast. Most notably this version is not applicable at 24 bits
  704.  * per pixel.
  705.  *
  706.  * @param x        x coordinate of top-left corner on screen.
  707.  * @param y        y coordinate of top-left corner on screen.
  708.  * @param cursor   Draw glyph with cursor
  709.  * @param glyphs   Pointer to font bitmap.
  710.  * @param glyph    Code of the glyph to draw.
  711.  * @param fg_color Foreground color.
  712.  * @param bg_color Backgroudn color.
  713.  *
  714.  */
  715. static void draw_glyph_aligned(unsigned int x, unsigned int y, bool cursor,
  716.     uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color)
  717. {
  718.     unsigned int i;
  719.     unsigned int yd;
  720.     unsigned long fg_buf;
  721.     unsigned long bg_buf;
  722.     unsigned long mask;
  723.    
  724.     /*
  725.      * Prepare a pair of words, one filled with foreground-color
  726.      * pattern and the other filled with background-color pattern.
  727.      */
  728.     for (i = 0; i < sizeof(unsigned long) / screen.pixelbytes; i++) {
  729.         screen.rgb_conv(&((uint8_t *) &fg_buf)[i * screen.pixelbytes],
  730.             fg_color);
  731.         screen.rgb_conv(&((uint8_t *) &bg_buf)[i * screen.pixelbytes],
  732.             bg_color);
  733.     }
  734.    
  735.     /* Pointer to the current position in the mask. */
  736.     unsigned long *maskp = (unsigned long *) &glyphs[GLYPH_POS(glyph, 0, cursor)];
  737.    
  738.     /* Pointer to the current position on the screen. */
  739.     unsigned long *dp = (unsigned long *) &screen.fb_addr[FB_POS(x, y)];
  740.    
  741.     /* Width of the character cell in words. */
  742.     unsigned int ww = FONT_WIDTH * screen.pixelbytes / sizeof(unsigned long);
  743.    
  744.     /* Offset to add when moving to another screen scanline. */
  745.     unsigned int d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
  746.    
  747.     for (yd = 0; yd < FONT_SCANLINES; yd++) {
  748.         /*
  749.          * Now process the cell scanline, combining foreground
  750.          * and background color patters using the pre-rendered mask.
  751.          */
  752.         for (i = 0; i < ww; i++) {
  753.             mask = *maskp++;
  754.             *dp++ = (fg_buf & mask) | (bg_buf & ~mask);
  755.         }
  756.        
  757.         /* Move to the beginning of the next scanline of the cell. */
  758.         dp = (unsigned long *) ((uint8_t *) dp + d_add);
  759.     }
  760. }
  761.  
  762. /** Draw a glyph, fallback version.
  763.  *
  764.  * This version does not make use of the pre-rendered mask, it uses
  765.  * the font bitmap directly. It works always, but it is slower.
  766.  *
  767.  * @param x        x coordinate of top-left corner on screen.
  768.  * @param y        y coordinate of top-left corner on screen.
  769.  * @param cursor   Draw glyph with cursor
  770.  * @param glyphs   Pointer to font bitmap.
  771.  * @param glyph    Code of the glyph to draw.
  772.  * @param fg_color Foreground color.
  773.  * @param bg_color Backgroudn color.
  774.  *
  775.  */
  776. void draw_glyph_fallback(unsigned int x, unsigned int y, bool cursor,
  777.     uint8_t *glyphs, uint32_t glyph, uint32_t fg_color, uint32_t bg_color)
  778. {
  779.     unsigned int i;
  780.     unsigned int j;
  781.     unsigned int yd;
  782.     uint8_t fg_buf[4];
  783.     uint8_t bg_buf[4];
  784.     uint8_t *sp;
  785.     uint8_t b;
  786.    
  787.     /* Pre-render 1x the foreground and background color pixels. */
  788.     if (cursor) {
  789.         screen.rgb_conv(fg_buf, bg_color);
  790.         screen.rgb_conv(bg_buf, fg_color);
  791.     } else {
  792.         screen.rgb_conv(fg_buf, fg_color);
  793.         screen.rgb_conv(bg_buf, bg_color);
  794.     }
  795.    
  796.     /* Pointer to the current position on the screen. */
  797.     uint8_t *dp = (uint8_t *) &screen.fb_addr[FB_POS(x, y)];
  798.    
  799.     /* Offset to add when moving to another screen scanline. */
  800.     unsigned int d_add = screen.scanline - FONT_WIDTH * screen.pixelbytes;
  801.    
  802.     for (yd = 0; yd < FONT_SCANLINES; yd++) {
  803.         /* Byte containing bits of the glyph scanline. */
  804.         b = fb_font[glyph][yd];
  805.        
  806.         for (i = 0; i < FONT_WIDTH; i++) {
  807.             /* Choose color based on the current bit. */
  808.             sp = (b & 0x80) ? fg_buf : bg_buf;
  809.            
  810.             /* Copy the pixel. */
  811.             for (j = 0; j < screen.pixelbytes; j++) {
  812.                 *dp++ = *sp++;
  813.             }
  814.            
  815.             /* Move to the next bit. */
  816.             b = b << 1;
  817.         }
  818.        
  819.         /* Move to the beginning of the next scanline of the cell. */
  820.         dp += d_add;
  821.     }
  822. }
  823.  
  824. /** Draw glyph at specified position in viewport.
  825.  *
  826.  * @param vport  Viewport identification
  827.  * @param cursor Draw glyph with cursor
  828.  * @param col    Screen position relative to viewport
  829.  * @param row    Screen position relative to viewport
  830.  *
  831.  */
  832. static void draw_vp_glyph(viewport_t *vport, bool cursor, unsigned int col,
  833.     unsigned int row)
  834. {
  835.     unsigned int x = vport->x + COL2X(col);
  836.     unsigned int y = vport->y + ROW2Y(row);
  837.    
  838.     uint32_t glyph = vport->backbuf[BB_POS(vport, col, row)].glyph;
  839.     uint32_t fg_color = vport->backbuf[BB_POS(vport, col, row)].fg_color;
  840.     uint32_t bg_color = vport->backbuf[BB_POS(vport, col, row)].bg_color;
  841.    
  842.     (*vport->dglyph)(x, y, cursor, screen.glyphs, glyph,
  843.         fg_color, bg_color);
  844. }
  845.  
  846. /** Hide cursor if it is shown
  847.  *
  848.  */
  849. static void cursor_hide(viewport_t *vport)
  850. {
  851.     if ((vport->cursor_active) && (vport->cursor_shown)) {
  852.         draw_vp_glyph(vport, false, vport->cur_col, vport->cur_row);
  853.         vport->cursor_shown = false;
  854.     }
  855. }
  856.  
  857.  
  858. /** Show cursor if cursor showing is enabled
  859.  *
  860.  */
  861. static void cursor_show(viewport_t *vport)
  862. {
  863.     /* Do not check for cursor_shown */
  864.     if (vport->cursor_active) {
  865.         draw_vp_glyph(vport, true, vport->cur_col, vport->cur_row);
  866.         vport->cursor_shown = true;
  867.     }
  868. }
  869.  
  870.  
  871. /** Invert cursor, if it is enabled
  872.  *
  873.  */
  874. static void cursor_blink(viewport_t *vport)
  875. {
  876.     if (vport->cursor_shown)
  877.         cursor_hide(vport);
  878.     else
  879.         cursor_show(vport);
  880. }
  881.  
  882.  
  883. /** Draw character at given position relative to viewport
  884.  *
  885.  * @param vport  Viewport identification
  886.  * @param c      Character to draw
  887.  * @param col    Screen position relative to viewport
  888.  * @param row    Screen position relative to viewport
  889.  *
  890.  */
  891. static void draw_char(viewport_t *vport, wchar_t c, unsigned int col, unsigned int row)
  892. {
  893.     bb_cell_t *bbp;
  894.    
  895.     /* Do not hide cursor if we are going to overwrite it */
  896.     if ((vport->cursor_active) && (vport->cursor_shown) &&
  897.         ((vport->cur_col != col) || (vport->cur_row != row)))
  898.         cursor_hide(vport);
  899.    
  900.     bbp = &vport->backbuf[BB_POS(vport, col, row)];
  901.     bbp->glyph = fb_font_glyph(c);
  902.     bbp->fg_color = vport->attr.fg_color;
  903.     bbp->bg_color = vport->attr.bg_color;
  904.    
  905.     draw_vp_glyph(vport, false, col, row);
  906.    
  907.     vport->cur_col = col;
  908.     vport->cur_row = row;
  909.    
  910.     vport->cur_col++;
  911.     if (vport->cur_col >= vport->cols) {
  912.         vport->cur_col = 0;
  913.         vport->cur_row++;
  914.         if (vport->cur_row >= vport->rows)
  915.             vport->cur_row--;
  916.     }
  917.    
  918.     cursor_show(vport);
  919. }
  920.  
  921. /** Draw text data to viewport.
  922.  *
  923.  * @param vport Viewport id
  924.  * @param data  Text data.
  925.  * @param x     Leftmost column of the area.
  926.  * @param y     Topmost row of the area.
  927.  * @param w     Number of rows.
  928.  * @param h     Number of columns.
  929.  *
  930.  */
  931. static void draw_text_data(viewport_t *vport, keyfield_t *data, unsigned int x,
  932.     unsigned int y, unsigned int w, unsigned int h)
  933. {
  934.     unsigned int i;
  935.     unsigned int j;
  936.     bb_cell_t *bbp;
  937.     attrs_t *a;
  938.     attr_rgb_t rgb;
  939.    
  940.     for (j = 0; j < h; j++) {
  941.         for (i = 0; i < w; i++) {
  942.             unsigned int col = x + i;
  943.             unsigned int row = y + j;
  944.            
  945.             bbp = &vport->backbuf[BB_POS(vport, col, row)];
  946.            
  947.             a = &data[j * w + i].attrs;
  948.             rgb_from_attr(&rgb, a);
  949.            
  950.             bbp->glyph = fb_font_glyph(data[j * w + i].character);
  951.             bbp->fg_color = rgb.fg_color;
  952.             bbp->bg_color = rgb.bg_color;
  953.            
  954.             draw_vp_glyph(vport, false, col, row);
  955.         }
  956.     }
  957.     cursor_show(vport);
  958. }
  959.  
  960.  
  961. static void putpixel_pixmap(void *data, unsigned int x, unsigned int y, uint32_t color)
  962. {
  963.     int pm = *((int *) data);
  964.     pixmap_t *pmap = &pixmaps[pm];
  965.     unsigned int pos = (y * pmap->width + x) * screen.pixelbytes;
  966.    
  967.     screen.rgb_conv(&pmap->data[pos], color);
  968. }
  969.  
  970.  
  971. static void putpixel(void *data, unsigned int x, unsigned int y, uint32_t color)
  972. {
  973.     viewport_t *vport = (viewport_t *) data;
  974.     unsigned int dx = vport->x + x;
  975.     unsigned int dy = vport->y + y;
  976.    
  977.     screen.rgb_conv(&screen.fb_addr[FB_POS(dx, dy)], color);
  978. }
  979.  
  980.  
  981. /** Return first free pixmap
  982.  *
  983.  */
  984. static int find_free_pixmap(void)
  985. {
  986.     unsigned int i;
  987.    
  988.     for (i = 0; i < MAX_PIXMAPS; i++)
  989.         if (!pixmaps[i].data)
  990.             return i;
  991.    
  992.     return -1;
  993. }
  994.  
  995.  
  996. /** Create a new pixmap and return appropriate ID
  997.  *
  998.  */
  999. static int shm2pixmap(unsigned char *shm, size_t size)
  1000. {
  1001.     int pm;
  1002.     pixmap_t *pmap;
  1003.    
  1004.     pm = find_free_pixmap();
  1005.     if (pm == -1)
  1006.         return ELIMIT;
  1007.    
  1008.     pmap = &pixmaps[pm];
  1009.    
  1010.     if (ppm_get_data(shm, size, &pmap->width, &pmap->height))
  1011.         return EINVAL;
  1012.    
  1013.     pmap->data = malloc(pmap->width * pmap->height * screen.pixelbytes);
  1014.     if (!pmap->data)
  1015.         return ENOMEM;
  1016.    
  1017.     ppm_draw(shm, size, 0, 0, pmap->width, pmap->height, putpixel_pixmap, (void *) &pm);
  1018.    
  1019.     return pm;
  1020. }
  1021.  
  1022.  
  1023. /** Handle shared memory communication calls
  1024.  *
  1025.  * Protocol for drawing pixmaps:
  1026.  * - FB_PREPARE_SHM(client shm identification)
  1027.  * - IPC_M_AS_AREA_SEND
  1028.  * - FB_DRAW_PPM(startx, starty)
  1029.  * - FB_DROP_SHM
  1030.  *
  1031.  * Protocol for text drawing
  1032.  * - IPC_M_AS_AREA_SEND
  1033.  * - FB_DRAW_TEXT_DATA
  1034.  *
  1035.  * @param callid Callid of the current call
  1036.  * @param call   Current call data
  1037.  * @param vp     Active viewport
  1038.  *
  1039.  * @return false if the call was not handled byt this function, true otherwise
  1040.  *
  1041.  * Note: this function is not threads safe, you would have
  1042.  * to redefine static variables with __thread
  1043.  *
  1044.  */
  1045. static bool shm_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  1046. {
  1047.     static keyfield_t *interbuffer = NULL;
  1048.     static size_t intersize = 0;
  1049.    
  1050.     static unsigned char *shm = NULL;
  1051.     static ipcarg_t shm_id = 0;
  1052.     static size_t shm_size;
  1053.    
  1054.     bool handled = true;
  1055.     int retval = EOK;
  1056.     viewport_t *vport = &viewports[vp];
  1057.     unsigned int x;
  1058.     unsigned int y;
  1059.     unsigned int w;
  1060.     unsigned int h;
  1061.    
  1062.     switch (IPC_GET_METHOD(*call)) {
  1063.     case IPC_M_SHARE_OUT:
  1064.         /* We accept one area for data interchange */
  1065.         if (IPC_GET_ARG1(*call) == shm_id) {
  1066.             void *dest = as_get_mappable_page(IPC_GET_ARG2(*call));
  1067.             shm_size = IPC_GET_ARG2(*call);
  1068.             if (!ipc_answer_1(callid, EOK, (sysarg_t) dest))
  1069.                 shm = dest;
  1070.             else
  1071.                 shm_id = 0;
  1072.            
  1073.             if (shm[0] != 'P')
  1074.                 return false;
  1075.            
  1076.             return true;
  1077.         } else {
  1078.             intersize = IPC_GET_ARG2(*call);
  1079.             receive_comm_area(callid, call, (void *) &interbuffer);
  1080.         }
  1081.         return true;
  1082.     case FB_PREPARE_SHM:
  1083.         if (shm_id)
  1084.             retval = EBUSY;
  1085.         else
  1086.             shm_id = IPC_GET_ARG1(*call);
  1087.         break;
  1088.        
  1089.     case FB_DROP_SHM:
  1090.         if (shm) {
  1091.             as_area_destroy(shm);
  1092.             shm = NULL;
  1093.         }
  1094.         shm_id = 0;
  1095.         break;
  1096.        
  1097.     case FB_SHM2PIXMAP:
  1098.         if (!shm) {
  1099.             retval = EINVAL;
  1100.             break;
  1101.         }
  1102.         retval = shm2pixmap(shm, shm_size);
  1103.         break;
  1104.     case FB_DRAW_PPM:
  1105.         if (!shm) {
  1106.             retval = EINVAL;
  1107.             break;
  1108.         }
  1109.         x = IPC_GET_ARG1(*call);
  1110.         y = IPC_GET_ARG2(*call);
  1111.        
  1112.         if ((x > vport->width) || (y > vport->height)) {
  1113.             retval = EINVAL;
  1114.             break;
  1115.         }
  1116.        
  1117.         ppm_draw(shm, shm_size, IPC_GET_ARG1(*call),
  1118.             IPC_GET_ARG2(*call), vport->width - x, vport->height - y, putpixel, (void *) vport);
  1119.         break;
  1120.     case FB_DRAW_TEXT_DATA:
  1121.         x = IPC_GET_ARG1(*call);
  1122.         y = IPC_GET_ARG2(*call);
  1123.         w = IPC_GET_ARG3(*call);
  1124.         h = IPC_GET_ARG4(*call);
  1125.         if (!interbuffer) {
  1126.             retval = EINVAL;
  1127.             break;
  1128.         }
  1129.         if (x + w > vport->cols || y + h > vport->rows) {
  1130.             retval = EINVAL;
  1131.             break;
  1132.         }
  1133.         if (intersize < w * h * sizeof(*interbuffer)) {
  1134.             retval = EINVAL;
  1135.             break;
  1136.         }
  1137.         draw_text_data(vport, interbuffer, x, y, w, h);
  1138.         break;
  1139.     default:
  1140.         handled = false;
  1141.     }
  1142.    
  1143.     if (handled)
  1144.         ipc_answer_0(callid, retval);
  1145.     return handled;
  1146. }
  1147.  
  1148.  
  1149. static void copy_vp_to_pixmap(viewport_t *vport, pixmap_t *pmap)
  1150. {
  1151.     unsigned int width = vport->width;
  1152.     unsigned int height = vport->height;
  1153.    
  1154.     if (width + vport->x > screen.xres)
  1155.         width = screen.xres - vport->x;
  1156.     if (height + vport->y > screen.yres)
  1157.         height = screen.yres - vport->y;
  1158.    
  1159.     unsigned int realwidth = pmap->width <= width ? pmap->width : width;
  1160.     unsigned int realheight = pmap->height <= height ? pmap->height : height;
  1161.    
  1162.     unsigned int srcrowsize = vport->width * screen.pixelbytes;
  1163.     unsigned int realrowsize = realwidth * screen.pixelbytes;
  1164.    
  1165.     unsigned int y;
  1166.     for (y = 0; y < realheight; y++) {
  1167.         unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
  1168.         memcpy(pmap->data + srcrowsize * y, screen.fb_addr + tmp, realrowsize);
  1169.     }
  1170. }
  1171.  
  1172.  
  1173. /** Save viewport to pixmap
  1174.  *
  1175.  */
  1176. static int save_vp_to_pixmap(viewport_t *vport)
  1177. {
  1178.     int pm;
  1179.     pixmap_t *pmap;
  1180.    
  1181.     pm = find_free_pixmap();
  1182.     if (pm == -1)
  1183.         return ELIMIT;
  1184.    
  1185.     pmap = &pixmaps[pm];
  1186.     pmap->data = malloc(screen.pixelbytes * vport->width * vport->height);
  1187.     if (!pmap->data)
  1188.         return ENOMEM;
  1189.    
  1190.     pmap->width = vport->width;
  1191.     pmap->height = vport->height;
  1192.    
  1193.     copy_vp_to_pixmap(vport, pmap);
  1194.    
  1195.     return pm;
  1196. }
  1197.  
  1198.  
  1199. /** Draw pixmap on screen
  1200.  *
  1201.  * @param vp Viewport to draw on
  1202.  * @param pm Pixmap identifier
  1203.  *
  1204.  */
  1205. static int draw_pixmap(int vp, int pm)
  1206. {
  1207.     pixmap_t *pmap = &pixmaps[pm];
  1208.     viewport_t *vport = &viewports[vp];
  1209.    
  1210.     unsigned int width = vport->width;
  1211.     unsigned int height = vport->height;
  1212.    
  1213.     if (width + vport->x > screen.xres)
  1214.         width = screen.xres - vport->x;
  1215.     if (height + vport->y > screen.yres)
  1216.         height = screen.yres - vport->y;
  1217.    
  1218.     if (!pmap->data)
  1219.         return EINVAL;
  1220.    
  1221.     unsigned int realwidth = pmap->width <= width ? pmap->width : width;
  1222.     unsigned int realheight = pmap->height <= height ? pmap->height : height;
  1223.    
  1224.     unsigned int srcrowsize = vport->width * screen.pixelbytes;
  1225.     unsigned int realrowsize = realwidth * screen.pixelbytes;
  1226.    
  1227.     unsigned int y;
  1228.     for (y = 0; y < realheight; y++) {
  1229.         unsigned int tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
  1230.         memcpy(screen.fb_addr + tmp, pmap->data + y * srcrowsize, realrowsize);
  1231.     }
  1232.    
  1233.     return EOK;
  1234. }
  1235.  
  1236.  
  1237. /** Tick animation one step forward
  1238.  *
  1239.  */
  1240. static void anims_tick(void)
  1241. {
  1242.     unsigned int i;
  1243.     static int counts = 0;
  1244.    
  1245.     /* Limit redrawing */
  1246.     counts = (counts + 1) % 8;
  1247.     if (counts)
  1248.         return;
  1249.    
  1250.     for (i = 0; i < MAX_ANIMATIONS; i++) {
  1251.         if ((!animations[i].animlen) || (!animations[i].initialized) ||
  1252.             (!animations[i].enabled))
  1253.             continue;
  1254.        
  1255.         draw_pixmap(animations[i].vp, animations[i].pixmaps[animations[i].pos]);
  1256.         animations[i].pos = (animations[i].pos + 1) % animations[i].animlen;
  1257.     }
  1258. }
  1259.  
  1260.  
  1261. static unsigned int pointer_x;
  1262. static unsigned int pointer_y;
  1263. static bool pointer_shown, pointer_enabled;
  1264. static int pointer_vport = -1;
  1265. static int pointer_pixmap = -1;
  1266.  
  1267.  
  1268. static void mouse_show(void)
  1269. {
  1270.     int i, j;
  1271.     int visibility;
  1272.     int color;
  1273.     int bytepos;
  1274.    
  1275.     if ((pointer_shown) || (!pointer_enabled))
  1276.         return;
  1277.    
  1278.     /* Save image under the pointer. */
  1279.     if (pointer_vport == -1) {
  1280.         pointer_vport = vport_create(pointer_x, pointer_y, pointer_width, pointer_height);
  1281.         if (pointer_vport < 0)
  1282.             return;
  1283.     } else {
  1284.         viewports[pointer_vport].x = pointer_x;
  1285.         viewports[pointer_vport].y = pointer_y;
  1286.     }
  1287.    
  1288.     if (pointer_pixmap == -1)
  1289.         pointer_pixmap = save_vp_to_pixmap(&viewports[pointer_vport]);
  1290.     else
  1291.         copy_vp_to_pixmap(&viewports[pointer_vport], &pixmaps[pointer_pixmap]);
  1292.    
  1293.     /* Draw mouse pointer. */
  1294.     for (i = 0; i < pointer_height; i++)
  1295.         for (j = 0; j < pointer_width; j++) {
  1296.             bytepos = i * ((pointer_width - 1) / 8 + 1) + j / 8;
  1297.             visibility = pointer_mask_bits[bytepos] &
  1298.                 (1 << (j % 8));
  1299.             if (visibility) {
  1300.                 color = pointer_bits[bytepos] &
  1301.                     (1 << (j % 8)) ? 0 : 0xffffff;
  1302.                 if (pointer_x + j < screen.xres && pointer_y +
  1303.                     i < screen.yres)
  1304.                     putpixel(&viewports[0], pointer_x + j,
  1305.                         pointer_y + i, color);
  1306.             }
  1307.         }
  1308.     pointer_shown = 1;
  1309. }
  1310.  
  1311.  
  1312. static void mouse_hide(void)
  1313. {
  1314.     /* Restore image under the pointer. */
  1315.     if (pointer_shown) {
  1316.         draw_pixmap(pointer_vport, pointer_pixmap);
  1317.         pointer_shown = 0;
  1318.     }
  1319. }
  1320.  
  1321.  
  1322. static void mouse_move(unsigned int x, unsigned int y)
  1323. {
  1324.     mouse_hide();
  1325.     pointer_x = x;
  1326.     pointer_y = y;
  1327.     mouse_show();
  1328. }
  1329.  
  1330.  
  1331. static int anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  1332. {
  1333.     bool handled = true;
  1334.     int retval = EOK;
  1335.     int i, nvp;
  1336.     int newval;
  1337.    
  1338.     switch (IPC_GET_METHOD(*call)) {
  1339.     case FB_ANIM_CREATE:
  1340.         nvp = IPC_GET_ARG1(*call);
  1341.         if (nvp == -1)
  1342.             nvp = vp;
  1343.         if (nvp >= MAX_VIEWPORTS || nvp < 0 ||
  1344.             !viewports[nvp].initialized) {
  1345.             retval = EINVAL;
  1346.             break;
  1347.         }
  1348.         for (i = 0; i < MAX_ANIMATIONS; i++) {
  1349.             if (!animations[i].initialized)
  1350.                 break;
  1351.         }
  1352.         if (i == MAX_ANIMATIONS) {
  1353.             retval = ELIMIT;
  1354.             break;
  1355.         }
  1356.         animations[i].initialized = 1;
  1357.         animations[i].animlen = 0;
  1358.         animations[i].pos = 0;
  1359.         animations[i].enabled = 0;
  1360.         animations[i].vp = nvp;
  1361.         retval = i;
  1362.         break;
  1363.     case FB_ANIM_DROP:
  1364.         i = IPC_GET_ARG1(*call);
  1365.         if (i >= MAX_ANIMATIONS || i < 0) {
  1366.             retval = EINVAL;
  1367.             break;
  1368.         }
  1369.         animations[i].initialized = 0;
  1370.         break;
  1371.     case FB_ANIM_ADDPIXMAP:
  1372.         i = IPC_GET_ARG1(*call);
  1373.         if (i >= MAX_ANIMATIONS || i < 0 ||
  1374.             !animations[i].initialized) {
  1375.             retval = EINVAL;
  1376.             break;
  1377.         }
  1378.         if (animations[i].animlen == MAX_ANIM_LEN) {
  1379.             retval = ELIMIT;
  1380.             break;
  1381.         }
  1382.         newval = IPC_GET_ARG2(*call);
  1383.         if (newval < 0 || newval > MAX_PIXMAPS ||
  1384.             !pixmaps[newval].data) {
  1385.             retval = EINVAL;
  1386.             break;
  1387.         }
  1388.         animations[i].pixmaps[animations[i].animlen++] = newval;
  1389.         break;
  1390.     case FB_ANIM_CHGVP:
  1391.         i = IPC_GET_ARG1(*call);
  1392.         if (i >= MAX_ANIMATIONS || i < 0) {
  1393.             retval = EINVAL;
  1394.             break;
  1395.         }
  1396.         nvp = IPC_GET_ARG2(*call);
  1397.         if (nvp == -1)
  1398.             nvp = vp;
  1399.         if (nvp >= MAX_VIEWPORTS || nvp < 0 ||
  1400.             !viewports[nvp].initialized) {
  1401.             retval = EINVAL;
  1402.             break;
  1403.         }
  1404.         animations[i].vp = nvp;
  1405.         break;
  1406.     case FB_ANIM_START:
  1407.     case FB_ANIM_STOP:
  1408.         i = IPC_GET_ARG1(*call);
  1409.         if (i >= MAX_ANIMATIONS || i < 0) {
  1410.             retval = EINVAL;
  1411.             break;
  1412.         }
  1413.         newval = (IPC_GET_METHOD(*call) == FB_ANIM_START);
  1414.         if (newval ^ animations[i].enabled) {
  1415.             animations[i].enabled = newval;
  1416.             anims_enabled += newval ? 1 : -1;
  1417.         }
  1418.         break;
  1419.     default:
  1420.         handled = 0;
  1421.     }
  1422.     if (handled)
  1423.         ipc_answer_0(callid, retval);
  1424.     return handled;
  1425. }
  1426.  
  1427.  
  1428. /** Handler for messages concerning pixmap handling
  1429.  *
  1430.  */
  1431. static int pixmap_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
  1432. {
  1433.     bool handled = true;
  1434.     int retval = EOK;
  1435.     int i, nvp;
  1436.    
  1437.     switch (IPC_GET_METHOD(*call)) {
  1438.     case FB_VP_DRAW_PIXMAP:
  1439.         nvp = IPC_GET_ARG1(*call);
  1440.         if (nvp == -1)
  1441.             nvp = vp;
  1442.         if (nvp < 0 || nvp >= MAX_VIEWPORTS ||
  1443.             !viewports[nvp].initialized) {
  1444.             retval = EINVAL;
  1445.             break;
  1446.         }
  1447.         i = IPC_GET_ARG2(*call);
  1448.         retval = draw_pixmap(nvp, i);
  1449.         break;
  1450.     case FB_VP2PIXMAP:
  1451.         nvp = IPC_GET_ARG1(*call);
  1452.         if (nvp == -1)
  1453.             nvp = vp;
  1454.         if (nvp < 0 || nvp >= MAX_VIEWPORTS ||
  1455.             !viewports[nvp].initialized)
  1456.             retval = EINVAL;
  1457.         else
  1458.             retval = save_vp_to_pixmap(&viewports[nvp]);
  1459.         break;
  1460.     case FB_DROP_PIXMAP:
  1461.         i = IPC_GET_ARG1(*call);
  1462.         if (i >= MAX_PIXMAPS) {
  1463.             retval = EINVAL;
  1464.             break;
  1465.         }
  1466.         if (pixmaps[i].data) {
  1467.             free(pixmaps[i].data);
  1468.             pixmaps[i].data = NULL;
  1469.         }
  1470.         break;
  1471.     default:
  1472.         handled = 0;
  1473.     }
  1474.    
  1475.     if (handled)
  1476.         ipc_answer_0(callid, retval);
  1477.     return handled;
  1478.    
  1479. }
  1480.  
  1481. static int rgb_from_style(attr_rgb_t *rgb, int style)
  1482. {
  1483.     switch (style) {
  1484.     case STYLE_NORMAL:
  1485.         rgb->fg_color = color_table[COLOR_BLACK];
  1486.         rgb->bg_color = color_table[COLOR_WHITE];
  1487.         break;
  1488.     case STYLE_EMPHASIS:
  1489.         rgb->fg_color = color_table[COLOR_RED];
  1490.         rgb->bg_color = color_table[COLOR_WHITE];
  1491.         break;
  1492.     default:
  1493.         return EINVAL;
  1494.     }
  1495.  
  1496.     return EOK;
  1497. }
  1498.  
  1499. static int rgb_from_idx(attr_rgb_t *rgb, ipcarg_t fg_color,
  1500.     ipcarg_t bg_color, ipcarg_t flags)
  1501. {
  1502.     fg_color = (fg_color & 7) | ((flags & CATTR_BRIGHT) ? 8 : 0);
  1503.     bg_color = (bg_color & 7) | ((flags & CATTR_BRIGHT) ? 8 : 0);
  1504.  
  1505.     rgb->fg_color = color_table[fg_color];
  1506.     rgb->bg_color = color_table[bg_color];
  1507.  
  1508.     return EOK;
  1509. }
  1510.  
  1511. static int rgb_from_attr(attr_rgb_t *rgb, const attrs_t *a)
  1512. {
  1513.     int rc;
  1514.  
  1515.     switch (a->t) {
  1516.     case at_style:
  1517.         rc = rgb_from_style(rgb, a->a.s.style);
  1518.         break;
  1519.     case at_idx:
  1520.         rc = rgb_from_idx(rgb, a->a.i.fg_color,
  1521.             a->a.i.bg_color, a->a.i.flags);
  1522.         break;
  1523.     case at_rgb:
  1524.         *rgb = a->a.r;
  1525.         rc = EOK;
  1526.         break;
  1527.     }
  1528.  
  1529.     return rc;
  1530. }
  1531.  
  1532. static int fb_set_style(viewport_t *vport, ipcarg_t style)
  1533. {
  1534.     return rgb_from_style(&vport->attr, (int) style);
  1535. }
  1536.  
  1537. static int fb_set_color(viewport_t *vport, ipcarg_t fg_color,
  1538.     ipcarg_t bg_color, ipcarg_t flags)
  1539. {
  1540.     return rgb_from_idx(&vport->attr, fg_color, bg_color, flags);
  1541. }
  1542.  
  1543. /** Function for handling connections to FB
  1544.  *
  1545.  */
  1546. static void fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
  1547. {
  1548.     unsigned int vp = 0;
  1549.     viewport_t *vport = &viewports[vp];
  1550.    
  1551.     if (client_connected) {
  1552.         ipc_answer_0(iid, ELIMIT);
  1553.         return;
  1554.     }
  1555.    
  1556.     /* Accept connection */
  1557.     client_connected = true;
  1558.     ipc_answer_0(iid, EOK);
  1559.    
  1560.     while (true) {
  1561.         ipc_callid_t callid;
  1562.         ipc_call_t call;
  1563.         int retval;
  1564.         unsigned int i;
  1565.         int scroll;
  1566.         wchar_t ch;
  1567.         unsigned int row, col;
  1568.        
  1569.         if ((vport->cursor_active) || (anims_enabled))
  1570.             callid = async_get_call_timeout(&call, 250000);
  1571.         else
  1572.             callid = async_get_call(&call);
  1573.        
  1574.         mouse_hide();
  1575.         if (!callid) {
  1576.             cursor_blink(vport);
  1577.             anims_tick();
  1578.             mouse_show();
  1579.             continue;
  1580.         }
  1581.        
  1582.         if (shm_handle(callid, &call, vp))
  1583.             continue;
  1584.        
  1585.         if (pixmap_handle(callid, &call, vp))
  1586.             continue;
  1587.        
  1588.         if (anim_handle(callid, &call, vp))
  1589.             continue;
  1590.        
  1591.         switch (IPC_GET_METHOD(call)) {
  1592.         case IPC_M_PHONE_HUNGUP:
  1593.             client_connected = false;
  1594.            
  1595.             /* Cleanup other viewports */
  1596.             for (i = 1; i < MAX_VIEWPORTS; i++)
  1597.                 vport->initialized = false;
  1598.            
  1599.             /* Exit thread */
  1600.             return;
  1601.        
  1602.         case FB_PUTCHAR:
  1603.             ch = IPC_GET_ARG1(call);
  1604.             row = IPC_GET_ARG2(call);
  1605.             col = IPC_GET_ARG3(call);
  1606.            
  1607.             if ((col >= vport->cols) || (row >= vport->rows)) {
  1608.                 retval = EINVAL;
  1609.                 break;
  1610.             }
  1611.             ipc_answer_0(callid, EOK);
  1612.            
  1613.             draw_char(vport, ch, col, row);
  1614.            
  1615.             /* Message already answered */
  1616.             continue;
  1617.         case FB_CLEAR:
  1618.             vport_clear(vport);
  1619.             cursor_show(vport);
  1620.             retval = EOK;
  1621.             break;
  1622.         case FB_CURSOR_GOTO:
  1623.             row = IPC_GET_ARG1(call);
  1624.             col = IPC_GET_ARG2(call);
  1625.            
  1626.             if ((col >= vport->cols) || (row >= vport->rows)) {
  1627.                 retval = EINVAL;
  1628.                 break;
  1629.             }
  1630.             retval = EOK;
  1631.            
  1632.             cursor_hide(vport);
  1633.             vport->cur_col = col;
  1634.             vport->cur_row = row;
  1635.             cursor_show(vport);
  1636.             break;
  1637.         case FB_CURSOR_VISIBILITY:
  1638.             cursor_hide(vport);
  1639.             vport->cursor_active = IPC_GET_ARG1(call);
  1640.             cursor_show(vport);
  1641.             retval = EOK;
  1642.             break;
  1643.         case FB_GET_CSIZE:
  1644.             ipc_answer_2(callid, EOK, vport->rows, vport->cols);
  1645.             continue;
  1646.         case FB_SCROLL:
  1647.             scroll = IPC_GET_ARG1(call);
  1648.             if ((scroll > (int) vport->rows) || (scroll < (-(int) vport->rows))) {
  1649.                 retval = EINVAL;
  1650.                 break;
  1651.             }
  1652.             cursor_hide(vport);
  1653.             vport_scroll(vport, scroll);
  1654.             cursor_show(vport);
  1655.             retval = EOK;
  1656.             break;
  1657.         case FB_VIEWPORT_SWITCH:
  1658.             i = IPC_GET_ARG1(call);
  1659.             if (i >= MAX_VIEWPORTS) {
  1660.                 retval = EINVAL;
  1661.                 break;
  1662.             }
  1663.             if (!viewports[i].initialized) {
  1664.                 retval = EADDRNOTAVAIL;
  1665.                 break;
  1666.             }
  1667.             cursor_hide(vport);
  1668.             vp = i;
  1669.             vport = &viewports[vp];
  1670.             cursor_show(vport);
  1671.             retval = EOK;
  1672.             break;
  1673.         case FB_VIEWPORT_CREATE:
  1674.             retval = vport_create(IPC_GET_ARG1(call) >> 16,
  1675.                 IPC_GET_ARG1(call) & 0xffff,
  1676.                 IPC_GET_ARG2(call) >> 16,
  1677.                 IPC_GET_ARG2(call) & 0xffff);
  1678.             break;
  1679.         case FB_VIEWPORT_DELETE:
  1680.             i = IPC_GET_ARG1(call);
  1681.             if (i >= MAX_VIEWPORTS) {
  1682.                 retval = EINVAL;
  1683.                 break;
  1684.             }
  1685.             if (!viewports[i].initialized) {
  1686.                 retval = EADDRNOTAVAIL;
  1687.                 break;
  1688.             }
  1689.             viewports[i].initialized = false;
  1690.             if (viewports[i].bgpixel)
  1691.                 free(viewports[i].bgpixel);
  1692.             if (viewports[i].backbuf)
  1693.                 free(viewports[i].backbuf);
  1694.             retval = EOK;
  1695.             break;
  1696.         case FB_SET_STYLE:
  1697.             retval = fb_set_style(vport, IPC_GET_ARG1(call));
  1698.             break;
  1699.         case FB_SET_COLOR:
  1700.             retval = fb_set_color(vport, IPC_GET_ARG1(call),
  1701.                 IPC_GET_ARG2(call), IPC_GET_ARG3(call));
  1702.             break;
  1703.         case FB_SET_RGB_COLOR:
  1704.             vport->attr.fg_color = IPC_GET_ARG1(call);
  1705.             vport->attr.bg_color = IPC_GET_ARG2(call);
  1706.             retval = EOK;
  1707.             break;
  1708.         case FB_GET_RESOLUTION:
  1709.             ipc_answer_2(callid, EOK, screen.xres, screen.yres);
  1710.             continue;
  1711.         case FB_POINTER_MOVE:
  1712.             pointer_enabled = true;
  1713.             mouse_move(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
  1714.             retval = EOK;
  1715.             break;
  1716.         case FB_SCREEN_GRAB:
  1717.         case FB_SCREEN_RELINQUISH:
  1718.             retval = EOK;
  1719.             break;
  1720.         default:
  1721.             retval = ENOENT;
  1722.         }
  1723.         ipc_answer_0(callid, retval);
  1724.     }
  1725. }
  1726.  
  1727. /** Initialization of framebuffer
  1728.  *
  1729.  */
  1730. int fb_init(void)
  1731. {
  1732.     async_set_client_connection(fb_client_connection);
  1733.    
  1734.     void *fb_ph_addr = (void *) sysinfo_value("fb.address.physical");
  1735.     unsigned int fb_offset = sysinfo_value("fb.offset");
  1736.     unsigned int fb_width = sysinfo_value("fb.width");
  1737.     unsigned int fb_height = sysinfo_value("fb.height");
  1738.     unsigned int fb_scanline = sysinfo_value("fb.scanline");
  1739.     unsigned int fb_visual = sysinfo_value("fb.visual");
  1740.    
  1741.     unsigned int fbsize = fb_scanline * fb_height;
  1742.     void *fb_addr = as_get_mappable_page(fbsize);
  1743.    
  1744.     if (physmem_map(fb_ph_addr + fb_offset, fb_addr,
  1745.         ALIGN_UP(fbsize, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE) != 0)
  1746.         return -1;
  1747.    
  1748.     if (screen_init(fb_addr, fb_width, fb_height, fb_scanline, fb_visual))
  1749.         return 0;
  1750.    
  1751.     return -1;
  1752. }
  1753.  
  1754. /**
  1755.  * @}
  1756.  */
  1757.