WebSVN – HelenOS – Diff – /branches/sparc/uspace/srv/fb/fb.c

 /*
  * Copyright (C) 2006 Jakub Vana
  * Copyright (C) 2006 Ondrej Palkovsky
  * All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
+ *
  * - Redistributions of source code must retain the above copyright
  *   notice, this list of conditions and the following disclaimer.
  * - Redistributions in binary form must reproduce the above copyright
  *   notice, this list of conditions and the following disclaimer in the
  *   documentation and/or other materials provided with the distribution.
  * - The name of the author may not be used to endorse or promote products
  *   derived from this software without specific prior written permission.
+ *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
 #include <ddi.h>
 #include <task.h>
 #include <sysinfo.h>
 #include <align.h>
 #include <as.h>
 #include <ipc/fb.h>
 #include <ipc/ipc.h>
 #include <ipc/ns.h>
 #include <ipc/services.h>
 #include <kernel/errno.h>
 #include <async.h>
 #include "font-8x16.h"
 #include "helenos.xbm"
 #include "fb.h"
 #define DEFAULT_BGCOLOR                0x000080
 #define DEFAULT_FGCOLOR                0xffff00
 /***************************************************************/
 /* Pixel specific fuctions */
 typedef void (*putpixel_fn_t)(unsigned int x, unsigned int y, int color);
 typedef int (*getpixel_fn_t)(unsigned int x, unsigned int y);
 struct {
     __u8 *fbaddress ;
     unsigned int xres ;
     unsigned int yres ;
     unsigned int scanline ;
     unsigned int pixelbytes ;
     putpixel_fn_t putpixel;
     getpixel_fn_t getpixel;
 } screen;
 typedef struct {
     int initialized;
     unsigned int x, y;
     unsigned int width, height;
     /* Text support in window */
     unsigned int rows, cols;
     /* Style for text printing */
     int bgcolor, fgcolor;
     /* Auto-cursor position */
-    int cursor_active, cur_x, cur_y;
+    int cursor_active, cur_col, cur_row;
 } viewport_t;
 #define MAX_VIEWPORTS 128
 static viewport_t viewports[128];
 /* Allow only 1 connection */
 static int client_connected = 0;
 #define RED(x, bits)    ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))
 #define GREEN(x, bits)  ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
 #define BLUE(x, bits)   ((x >> (8 - bits)) & ((1 << bits) - 1))
 #define COL_WIDTH   8
 #define ROW_BYTES   (screen.scanline * FONT_SCANLINES)
 #define POINTPOS(x, y)  ((y) * screen.scanline + (x) * screen.pixelbytes)
 /** Put pixel - 24-bit depth, 1 free byte */
 static void putpixel_4byte(unsigned int x, unsigned int y, int color)
+{
     *((__u32 *)(screen.fbaddress + POINTPOS(x, y))) = color;
+}
 /** Return pixel color - 24-bit depth, 1 free byte */
 static int getpixel_4byte(unsigned int x, unsigned int y)
+{
     return *((__u32 *)(screen.fbaddress + POINTPOS(x, y))) & 0xffffff;
+}
 /** Put pixel - 24-bit depth */
 static void putpixel_3byte(unsigned int x, unsigned int y, int color)
+{
     unsigned int startbyte = POINTPOS(x, y);
 #if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
     screen.fbaddress[startbyte] = RED(color, 8);
     screen.fbaddress[startbyte + 1] = GREEN(color, 8);
     screen.fbaddress[startbyte + 2] = BLUE(color, 8);
 #else
     screen.fbaddress[startbyte + 2] = RED(color, 8);
     screen.fbaddress[startbyte + 1] = GREEN(color, 8);
     screen.fbaddress[startbyte + 0] = BLUE(color, 8);
 #endif
+}
 /** Return pixel color - 24-bit depth */
 static int getpixel_3byte(unsigned int x, unsigned int y)
+{
     unsigned int startbyte = POINTPOS(x, y);
 #if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
     return screen.fbaddress[startbyte] << 16 | screen.fbaddress[startbyte + 1] << 8 | screen.fbaddress[startbyte + 2];
 #else
     return screen.fbaddress[startbyte + 2] << 16 | screen.fbaddress[startbyte + 1] << 8 | screen.fbaddress[startbyte + 0];
 #endif
+}
 /** Put pixel - 16-bit depth (5:6:5) */
 static void putpixel_2byte(unsigned int x, unsigned int y, int color)
+{
     /* 5-bit, 6-bits, 5-bits */
     *((__u16 *)(screen.fbaddress + POINTPOS(x, y))) = RED(color, 5) << 11 | GREEN(color, 6) << 5 | BLUE(color, 5);
+}
 /** Return pixel color - 16-bit depth (5:6:5) */
 static int getpixel_2byte(unsigned int x, unsigned int y)
+{
     int color = *((__u16 *)(screen.fbaddress + POINTPOS(x, y)));
     return (((color >> 11) & 0x1f) << (16 + 3)) | (((color >> 5) & 0x3f) << (8 + 2)) | ((color & 0x1f) << 3);
+}
 /** Put pixel - 8-bit depth (3:2:3) */
 static void putpixel_1byte(unsigned int x, unsigned int y, int color)
+{
     screen.fbaddress[POINTPOS(x, y)] = RED(color, 3) << 5 | GREEN(color, 2) << 3 | BLUE(color, 3);
+}
 /** Return pixel color - 8-bit depth (3:2:3) */
 static int getpixel_1byte(unsigned int x, unsigned int y)
+{
     int color = screen.fbaddress[POINTPOS(x, y)];
     return (((color >> 5) & 0x7) << (16 + 5)) | (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
+}
 static void putpixel(int vp, unsigned int x, unsigned int y, int color)
+{
     screen.putpixel(viewports[vp].x + x, viewports[vp].y + y, color);
+}
 static int getpixel(int vp, unsigned int x, unsigned int y)
+{
     return screen.getpixel(viewports[vp].x + x, viewports[vp].y + y);
+}
 /** Fill line with color BGCOLOR */
 static void clear_line(int vp, unsigned int y)
+{
     unsigned int x;
     for (x = 0; x < viewports[vp].width; x++)
         putpixel(vp, x, y, viewports[vp].bgcolor);
+}
 /** Fill viewport with background color */
 static void clear_port(int vp)
+{
     unsigned int y;
     clear_line(vp, 0);
     for (y = viewports[vp].y+1; y < viewports[vp].y+viewports[vp].height; y++) {
         memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
                &screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y)],
                screen.pixelbytes * viewports[vp].width);
+    }
+}
-/** Optimized scroll for windows that cover whole lines */
-//static void scroll_optim(int vp, int rows)
-//{
-    /* TODO */
-//}
 /** Scroll port up/down
+ *
  * @param vp Viewport to scroll
  * @param rows Positive number - scroll up, negative - scroll down
  */
 static void scroll_port(int vp, int rows)
+{
     int y;
     int startline;
     int endline;
     if (rows > 0) {
         for (y=viewports[vp].y; y < viewports[vp].y+viewports[vp].height - rows*FONT_SCANLINES; y++)
             memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
                    &screen.fbaddress[POINTPOS(viewports[vp].x,y + rows*FONT_SCANLINES)],
                    screen.pixelbytes * viewports[vp].width);
         /* Clear last row */
         startline = viewports[vp].y+FONT_SCANLINES*(viewports[vp].rows-1);
         endline = viewports[vp].y + viewports[vp].height;
         clear_line(vp, startline);
         for (y=startline+1;y < endline; y++)
             memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
                    &screen.fbaddress[POINTPOS(viewports[vp].x,startline)],
                    screen.pixelbytes * viewports[vp].width);
     } else if (rows < 0) {
         rows = -rows;
         for (y=viewports[vp].y + viewports[vp].height-1; y >= viewports[vp].y + rows*FONT_SCANLINES; y--)
             memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
                 &screen.fbaddress[POINTPOS(viewports[vp].x,y - rows*FONT_SCANLINES)],
                 screen.pixelbytes * viewports[vp].width);
         /* Clear first row */
         clear_line(0, viewports[vp].bgcolor);
         for (y=1;y < rows*FONT_SCANLINES; y++)
             memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y+y)],
                    &screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y)],
                    screen.pixelbytes * viewports[vp].width);
+    }
+}
 static void invert_pixel(int vp,unsigned int x, unsigned int y)
+{
     putpixel(vp, x, y, ~getpixel(vp, x, y));
+}
 /** Draw one line of glyph at a given position */
 static void draw_glyph_line(int vp,unsigned int glline, unsigned int x, unsigned int y)
+{
     unsigned int i;
     for (i = 0; i < 8; i++)
         if (glline & (1 << (7 - i))) {
             putpixel(vp, x + i, y, viewports[vp].fgcolor);
         } else
             putpixel(vp, x + i, y, viewports[vp].bgcolor);
+}
 /***************************************************************/
 /* Character-console functions */
 /** Draw character at given position */
 static void draw_glyph(int vp,__u8 glyph, unsigned int row, unsigned int col)
+{
     unsigned int y;
     for (y = 0; y < FONT_SCANLINES; y++)
         draw_glyph_line(vp ,fb_font[glyph * FONT_SCANLINES + y], col * COL_WIDTH, row * FONT_SCANLINES + y);
+}
 /** Invert character at given position */
 static void invert_char(int vp,unsigned int col, unsigned int row)
+{
     unsigned int x;
     unsigned int y;
     for (x = 0; x < COL_WIDTH; x++)
         for (y = 0; y < FONT_SCANLINES; y++)
             invert_pixel(vp, col * COL_WIDTH + x, row * FONT_SCANLINES + y);
+}
 static void draw_logo(int vp,unsigned int startx, unsigned int starty)
+{
     unsigned int x;
     unsigned int y;
     unsigned int byte;
     unsigned int rowbytes;
     rowbytes = (helenos_width - 1) / 8 + 1;
     for (y = 0; y < helenos_height; y++)
         for (x = 0; x < helenos_width; x++) {
             byte = helenos_bits[rowbytes * y + x / 8];
             byte >>= x % 8;
             if (byte & 1)
                 putpixel(vp ,startx + x, starty + y, viewports[vp].fgcolor);
+        }
+}
 /***************************************************************/
 /* Stdout specific functions */
 /** Create new viewport
+ *
  * @return New viewport number
  */
 static int viewport_create(unsigned int x, unsigned int y,unsigned int width,
                unsigned int height)
+{
     int i;
     for (i=0; i < MAX_VIEWPORTS; i++) {
         if (!viewports[i].initialized)
             break;
+    }
     if (i == MAX_VIEWPORTS)
         return ELIMIT;
-    viewports[i].initialized = 1;
+    if (width ==0 || height == 0 ||
+        x+width > screen.xres || y+height > screen.yres)
+        return EINVAL;
+    if (width < FONT_SCANLINES || height < COL_WIDTH)
+        return EINVAL;
     viewports[i].x = x;
     viewports[i].y = y;
     viewports[i].width = width;
     viewports[i].height = height;
     viewports[i].rows = height / FONT_SCANLINES;
     viewports[i].cols = width / COL_WIDTH;
     viewports[i].bgcolor = DEFAULT_BGCOLOR;
     viewports[i].fgcolor = DEFAULT_FGCOLOR;
+    viewports[i].initialized = 1;
     return i;
+}
 /** Initialize framebuffer as a chardev output device
+ *
  * @param addr Address of theframebuffer
  * @param x    Screen width in pixels
  * @param y    Screen height in pixels
  * @param bpp  Bits per pixel (8, 16, 24, 32)
  * @param scan Bytes per one scanline
+ *
  */
 static void screen_init(__address addr, unsigned int xres, unsigned int yres, unsigned int bpp, unsigned int scan)
+{
     switch (bpp) {
         case 8:
             screen.putpixel = putpixel_1byte;
             screen.getpixel = getpixel_1byte;
             screen.pixelbytes = 1;
             break;
         case 16:
             screen.putpixel = putpixel_2byte;
             screen.getpixel = getpixel_2byte;
             screen.pixelbytes = 2;
             break;
         case 24:
             screen.putpixel = putpixel_3byte;
             screen.getpixel = getpixel_3byte;
             screen.pixelbytes = 3;
             break;
         case 32:
             screen.putpixel = putpixel_4byte;
             screen.getpixel = getpixel_4byte;
             screen.pixelbytes = 4;
             break;
+    }
     screen.fbaddress = (unsigned char *) addr;
     screen.xres = xres;
     screen.yres = yres;
     screen.scanline = scan;
     /* Create first viewport */
     viewport_create(0,0,xres,yres);
     clear_port(0);
+}
 static int init_fb(void)
+{
     __address fb_ph_addr;
     unsigned int fb_width;
     unsigned int fb_height;
     unsigned int fb_bpp;
     unsigned int fb_scanline;
     __address fb_addr;
     int a=0;
     int i,j,k;
     int w;
     char text[]="HelenOS Framebuffer driver\non Virtual Framebuffer\nVFB ";
     fb_ph_addr=sysinfo_value("fb.address.physical");
     fb_width=sysinfo_value("fb.width");
     fb_height=sysinfo_value("fb.height");
     fb_bpp=sysinfo_value("fb.bpp");
     fb_scanline=sysinfo_value("fb.scanline");
     fb_addr=ALIGN_UP(((__address)set_maxheapsize(USER_ADDRESS_SPACE_SIZE_ARCH>>1)),PAGE_SIZE);
     map_physmem(task_get_id(),(void *)((__address)fb_ph_addr),(void *)fb_addr,
             (fb_scanline*fb_height+PAGE_SIZE-1)>>PAGE_WIDTH,
             AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE);
     screen_init(fb_addr, fb_width, fb_height, fb_bpp, fb_scanline);
     return 0;
+}
+static void draw_char(int vp, char c, unsigned int col, unsigned int row)
+{
+    viewport_t *vport = &viewports[vp];
+    if (vport->cursor_active && (vport->cur_col != col || vport->cur_row != row))
+        invert_char(vp, vport->cur_col,vport->cur_row);
+    draw_glyph(vp, c, col, row);
+    if (vport->cursor_active) {
+        vport->cur_col++;
+        if (vport->cur_col>= vport->cols) {
+            vport->cur_col = 0;
+            vport->cur_row++;
+            if (vport->cur_row >= vport->rows)
+                vport->cur_row--;
+        }
+        invert_char(vp, vport->cur_col,vport->cur_row);
+    }
+}
 void client_connection(ipc_callid_t iid, ipc_call_t *icall)
+{
     ipc_callid_t callid;
     ipc_call_t call;
     int retval;
     int i;
     unsigned int row,col;
     char c;
     int vp = 0;
+    viewport_t *vport = &viewports[0];
     if (client_connected) {
         ipc_answer_fast(iid, ELIMIT, 0,0);
         return;
+    }
+    client_connected = 1;
     ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
     while (1) {
         callid = async_get_call(&call);
         switch (IPC_GET_METHOD(call)) {
         case IPC_M_PHONE_HUNGUP:
             client_connected = 0;
             /* cleanup other viewports */
             for (i=1; i < MAX_VIEWPORTS; i++)
-                viewports[i].initialized = 0;
+                vport->initialized = 0;
             ipc_answer_fast(callid,0,0,0);
             return; /* Exit thread */
         case FB_PUTCHAR:
             c = IPC_GET_ARG1(call);
             row = IPC_GET_ARG2(call);
             col = IPC_GET_ARG3(call);
-            if (row >= viewports[vp].rows || col >= viewports[vp].cols) {
+            if (row >= vport->rows || col >= vport->cols) {
                 retval = EINVAL;
                 break;
+            }
             ipc_answer_fast(callid,0,0,0);
-            draw_glyph(vp,c, row, col);
+            draw_char(vp, c, row, col);
             continue; /* msg already answered */
         case FB_CLEAR:
             clear_port(vp);
+            if (vport->cursor_active)
+                invert_char(vp, vport->cur_col,vport->cur_row);
             retval = 0;
             break;
-/*      case FB_CURSOR_GOTO: */
+        case FB_CURSOR_GOTO:
+            row = IPC_GET_ARG1(call);
+            col = IPC_GET_ARG2(call);
+            if (row >= vport->rows || col >= vport->cols) {
+                retval = EINVAL;
+                break;
+            }
-/*          retval = 0; */
+            retval = 0;
+            if (viewports[vp].cursor_active) {
+                invert_char(vp, vport->cur_col,vport->cur_row);
+                invert_char(vp, col, row);
+            }
+            vport->cur_col = col;
+            vport->cur_row = row;
-/*          break; */
+            break;
-/*      case FB_CURSOR_VISIBILITY: */
+        case FB_CURSOR_VISIBILITY:
+            i = IPC_GET_ARG1(call);
-/*          retval = 0; */
+            retval = 0;
+            if ((i && vport->cursor_active) || (!i && !vport->cursor_active))
-/*          break; */
+                break;
+            vport->cursor_active = i;
+            invert_char(vp, vport->cur_col,vport->cur_row);
+            break;
         case FB_GET_CSIZE:
-            ipc_answer_fast(callid, 0, viewports[vp].rows, viewports[vp].cols);
+            ipc_answer_fast(callid, 0, vport->rows, vport->cols);
+            continue;
+        case FB_SCROLL:
+            i = IPC_GET_ARG1(call);
+            if (i > vport->rows || i < (- (int)vport->rows)) {
+                retval = EINVAL;
+                break;
+            }
+            if (vport->cursor_active)
+                invert_char(vp, vport->cur_col,vport->cur_row);
+            scroll_port(vp, i);
+            if (vport->cursor_active)
+                invert_char(vp, vport->cur_col,vport->cur_row);
+            retval = 0;
+            break;
+        case FB_VIEWPORT_SWITCH:
+            i = IPC_GET_ARG1(call);
+            if (i < 0 || i >= MAX_VIEWPORTS) {
+                retval = EINVAL;
+                break;
+            }
+            if (! viewports[i].initialized ) {
+                retval = EADDRNOTAVAIL;
+                break;
+            }
+            vp = i;
+            vport = &viewports[vp];
+            retval = 0;
+            break;
+        case FB_VIEWPORT_CREATE:
+            retval = viewport_create(IPC_GET_ARG1(call) >> 16,
+                         IPC_GET_ARG1(call) & 0xffff,
+                         IPC_GET_ARG2(call) >> 16,
+                         IPC_GET_ARG2(call) & 0xffff);
+            break;
+        case FB_VIEWPORT_DELETE:
+            i = IPC_GET_ARG1(call);
+            if (i < 0 || i >= MAX_VIEWPORTS) {
+                retval = EINVAL;
+                break;
+            }
+            if (! viewports[i].initialized ) {
+                retval = EADDRNOTAVAIL;
+                break;
+            }
+            viewports[i].initialized = 0;
+            retval = 0;
+            break;
+        case FB_SET_STYLE:
+            vport->fgcolor = IPC_GET_ARG1(call);
+            vport->bgcolor = IPC_GET_ARG2(call);
+            retval = 0;
+            break;
+        case FB_GET_RESOLUTION:
+            ipc_answer_fast(callid, 0, screen.xres,screen.yres);
             continue;
         default:
             retval = ENOENT;
+        }
-        retval = ENOENT;
         ipc_answer_fast(callid,retval,0,0);
+    }
+}
 int main(int argc, char *argv[])
+{
     char connected = 0;
     int res;
     ipcarg_t phonead;
     if(!sysinfo_value("fb"))
         return -1;
     if ((res = ipc_connect_to_me(PHONE_NS, SERVICE_VIDEO, 0, &phonead)) != 0)
         return -1;
     if (init_fb() != 0)
         return -1;
     async_manager();
     /* Never reached */
     return 0;
+}

Subversion Repositories HelenOS

(root)/branches/sparc/uspace/srv/fb/fb.c @ 3745 – Rev 1485 → 1486