WebSVN – HelenOS-historic – Diff – /uspace/trunk/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 <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <ddi.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 "fb.h"
#include "main.h"
#include "../console/screenbuffer.h"
#include "ppm.h"
 
#define DEFAULT_BGCOLOR                0x000080
#define DEFAULT_FGCOLOR                0xffff00
 
/***************************************************************/
/* Pixel specific fuctions */
 
typedef void (*conv2scr_fn_t)(void *, int);
typedef int (*conv2rgb_fn_t)(void *);
 
struct {
    __u8 *fbaddress ;
 
    unsigned int xres ;
    unsigned int yres ;
    unsigned int scanline ;
    unsigned int pixelbytes ;
 
    conv2scr_fn_t rgb2scr;
    conv2rgb_fn_t scr2rgb;
} 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 */
    style_t style;
    /* Auto-cursor position */
    int cursor_active, cur_col, cur_row;
    int cursor_shown;
} viewport_t;
 
/** Maximum number of saved pixmaps
 * Pixmap is a saved rectangle
 */
#define MAX_PIXMAPS        256
typedef struct {
    unsigned int width;
    unsigned int height;
    __u8 *data;
} pixmap_t;
static pixmap_t pixmaps[MAX_PIXMAPS];
 
/* Viewport is a rectangular area on the screen */
#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)
 
/* Conversion routines between different color representations */
static void rgb_4byte(void *dst, int rgb)
{
    *(int *)dst = rgb;
}
 
static int byte4_rgb(void *src)
{
    return (*(int *)src) & 0xffffff;
}
 
static void rgb_3byte(void *dst, int rgb)
{
    __u8 *scr = dst;
#if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
    scr[0] = RED(rgb, 8);
    scr[1] = GREEN(rgb, 8);
    scr[2] = BLUE(rgb, 8);
#else
    scr[2] = RED(rgb, 8);
    scr[1] = GREEN(rgb, 8);
    scr[0] = BLUE(rgb, 8);
#endif
 
 
}
 
static int byte3_rgb(void *src)
{
    __u8 *scr = src;
#if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
    return scr[0] << 16 | scr[1] << 8 | scr[2];
#else
    return scr[2] << 16 | scr[1] << 8 | scr[0];
#endif  
}
 
/**  16-bit depth (5:6:5) */
static void rgb_2byte(void *dst, int rgb)
{
    /* 5-bit, 6-bits, 5-bits */
    *((__u16 *)(dst)) = RED(rgb, 5) << 11 | GREEN(rgb, 6) << 5 | BLUE(rgb, 5);
}
 
/** 16-bit depth (5:6:5) */
static int byte2_rgb(void *src)
{
    int color = *(__u16 *)(src);
    return (((color >> 11) & 0x1f) << (16 + 3)) | (((color >> 5) & 0x3f) << (8 + 2)) | ((color & 0x1f) << 3);
}
 
/** Put pixel - 8-bit depth (3:2:3) */
static void rgb_1byte(void *dst, int rgb)
{
    *(__u8 *)dst = RED(rgb, 3) << 5 | GREEN(rgb, 2) << 3 | BLUE(rgb, 3);
}
 
/** Return pixel color - 8-bit depth (3:2:3) */
static int byte1_rgb(void *src)
{
    int color = *(__u8 *)src;
    return (((color >> 5) & 0x7) << (16 + 5)) | (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
}
 
/** Put pixel into viewport
 *
 * @param vp Viewport identification
 * @param x X coord relative to viewport
 * @param y Y coord relative to viewport
 * @param color RGB color
 */
static void putpixel(int vp, unsigned int x, unsigned int y, int color)
{
    int dx = viewports[vp].x + x;
    int dy = viewports[vp].y + y;
    (*screen.rgb2scr)(&screen.fbaddress[POINTPOS(dx,dy)],color);
}
/** Get pixel from viewport */
static int getpixel(int vp, unsigned int x, unsigned int y)
{
    int dx = viewports[vp].x + x;
    int dy = viewports[vp].y + y;
 
    return (*screen.scr2rgb)(&screen.fbaddress[POINTPOS(dx,dy)]);
}
 
/** 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].style.bg_color);
}
 
static void draw_rectangle(int vp, unsigned int sx, unsigned int sy,
               unsigned int width, unsigned int height,
               int color)
{
    unsigned int x, y;
 
    /* Clear first line */
    for (x = 0; x < width; x++)
        putpixel(vp, sx + x, sy, color);
 
    /* Recompute to screen coords */
    sx += viewports[vp].x;
    sy += viewports[vp].y;
    /* Copy the rest */
    for (y = sy+1;y < sy+height; y++)
        memcpy(&screen.fbaddress[POINTPOS(sx,y)],
               &screen.fbaddress[POINTPOS(sx,sy)],
               screen.pixelbytes * width);
 
}
 
/** Fill viewport with background color */
static void clear_port(int vp)
{
    viewport_t *vport = &viewports[vp];
 
    draw_rectangle(vp, 0, 0, vport->width, vport->height, vport->style.bg_color);
}
 
/** 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;
    viewport_t *vport = &viewports[vp];
   
    if (rows > 0) {
        for (y=vport->y; y < vport->y+vport->height - rows*FONT_SCANLINES; y++)
            memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],
                   &screen.fbaddress[POINTPOS(vport->x,y + rows*FONT_SCANLINES)],
                   screen.pixelbytes * vport->width);
        draw_rectangle(vp, 0, FONT_SCANLINES*(vport->rows - 1),
                   vport->width, FONT_SCANLINES, vport->style.bg_color);
    } else if (rows < 0) {
        rows = -rows;
        for (y=vport->y + vport->height-1; y >= vport->y + rows*FONT_SCANLINES; y--)
            memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],
                &screen.fbaddress[POINTPOS(vport->x,y - rows*FONT_SCANLINES)],
                screen.pixelbytes * vport->width);
        draw_rectangle(vp, 0, 0, vport->width, FONT_SCANLINES, vport->style.bg_color);
    }
}
 
static void invert_pixel(int vp,unsigned int x, unsigned int y)
{
    putpixel(vp, x, y, ~getpixel(vp, x, y));
}
 
 
/***************************************************************/
/* Character-console functions */
 
/** Draw character at given position
 *
 * @param vp Viewport where the character is printed
 * @param sx Coordinates of top-left of the character
 * @param sy Coordinates of top-left of the character
 * @param style Color of the character
 * @param transparent If false, print background color
 */
static void draw_glyph(int vp,__u8 glyph, unsigned int sx, unsigned int sy,
               style_t style, int transparent)
{
    int i;
    unsigned int y;
    unsigned int glline;
 
    for (y = 0; y < FONT_SCANLINES; y++) {
        glline = fb_font[glyph * FONT_SCANLINES + y];
        for (i = 0; i < 8; i++) {
            if (glline & (1 << (7 - i)))
                putpixel(vp, sx + i, sy + y, style.fg_color);
            else if (!transparent)
                putpixel(vp, sx + i, sy + y, style.bg_color);
        }
    }
}
 
/** Invert character at given position */
static void invert_char(int vp,unsigned int row, unsigned int col)
{
    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);
}
 
/***************************************************************/
/* 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;
 
    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].style.bg_color = DEFAULT_BGCOLOR;
    viewports[i].style.fg_color = DEFAULT_FGCOLOR;
   
    viewports[i].cur_col = 0;
    viewports[i].cur_row = 0;
    viewports[i].cursor_active = 0;
 
    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(void *addr, unsigned int xres, unsigned int yres, unsigned int bpp, unsigned int scan)
{
    switch (bpp) {
        case 8:
            screen.rgb2scr = rgb_1byte;
            screen.scr2rgb = byte1_rgb;
            screen.pixelbytes = 1;
            break;
        case 16:
            screen.rgb2scr = rgb_2byte;
            screen.scr2rgb = byte2_rgb;
            screen.pixelbytes = 2;
            break;
        case 24:
            screen.rgb2scr = rgb_3byte;
            screen.scr2rgb = byte3_rgb;
            screen.pixelbytes = 3;
            break;
        case 32:
            screen.rgb2scr = rgb_4byte;
            screen.scr2rgb = byte4_rgb;
            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);
}
 
/** Hide cursor if it is shown */
static void cursor_hide(int vp)
{
    viewport_t *vport = &viewports[vp];
 
    if (vport->cursor_active && vport->cursor_shown) {
        invert_char(vp, vport->cur_row, vport->cur_col);
        vport->cursor_shown = 0;
    }
}
 
/** Show cursor if cursor showing is enabled */
static void cursor_print(int vp)
{
    viewport_t *vport = &viewports[vp];
 
    /* Do not check for cursor_shown */
    if (vport->cursor_active) {
        invert_char(vp, vport->cur_row, vport->cur_col);
        vport->cursor_shown = 1;
    }
}
 
/** Invert cursor, if it is enabled */
static void cursor_blink(int vp)
{
    viewport_t *vport = &viewports[vp];
 
    if (vport->cursor_shown)
        cursor_hide(vp);
    else
        cursor_print(vp);
}
 
/** Draw character at given position relative to viewport
 *
 * @param vp Viewport identification
 * @param c Character to print
 * @param row Screen position relative to viewport
 * @param col Screen position relative to viewport
 * @param transparent If false, print background color with character
 */
static void draw_char(int vp, char c, unsigned int row, unsigned int col, style_t style, int transparent)
{
    viewport_t *vport = &viewports[vp];
 
    /* Optimize - do not hide cursor if we are going to overwrite it */
    if (vport->cursor_active && vport->cursor_shown &&
        (vport->cur_col != col || vport->cur_row != row))
        invert_char(vp, vport->cur_row, vport->cur_col);
   
    draw_glyph(vp, c, col * COL_WIDTH, row * FONT_SCANLINES, style, transparent);
 
    vport->cur_col = col;
    vport->cur_row = row;
 
    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--;
    }
    cursor_print(vp);
}
 
/** Draw text data to viewport
 *
 * @param vp Viewport id
 * @param data Text data fitting exactly into viewport
 */
static void draw_text_data(int vp, keyfield_t *data)
{
    viewport_t *vport = &viewports[vp];
    int i;
    char c;
    int col,row;
 
    clear_port(vp);
    for (i=0; i < vport->cols * vport->rows; i++) {
        if (data[i].character == ' ' && style_same(data[i].style,vport->style))
            continue;
        col = i % vport->cols;
        row = i / vport->cols;
        draw_glyph(vp, data[i].character, col * COL_WIDTH, row * FONT_SCANLINES,
               data[i].style, style_same(data[i].style,vport->style));
    }
    cursor_print(vp);
}
 
 
/** Return first free pixmap */
static int find_free_pixmap(void)
{
    int i;
   
    for (i=0;i < MAX_PIXMAPS;i++)
        if (!pixmaps[i].data)
            return i;
    return -1;
}
 
static void putpixel_pixmap(int pm, unsigned int x, unsigned int y, int color)
{
    pixmap_t *pmap = &pixmaps[pm];
    int pos = (y * pmap->width + x) * screen.pixelbytes;
 
    (*screen.rgb2scr)(&pmap->data[pos],color);
}
 
/** Create a new pixmap and return appropriate ID */
static int shm2pixmap(char *shm, size_t size)
{
    int pm;
    pixmap_t *pmap;
 
    pm = find_free_pixmap();
    if (pm == -1)
        return ELIMIT;
    pmap = &pixmaps[pm];
   
    if (ppm_get_data(shm, size, &pmap->width, &pmap->height))
        return EINVAL;
   
    pmap->data = malloc(pmap->width * pmap->height * screen.pixelbytes);
    if (!pmap->data)
        return ENOMEM;
 
    ppm_draw(shm, size, 0, 0, pmap->width, pmap->height,
         putpixel_pixmap, pm);
 
    return pm;
}
 
/** Handle shared memory communication calls
 *
 * Protocol for drawing pixmaps:
 * - FB_PREPARE_SHM(client shm identification)
 * - IPC_M_SEND_AS_AREA
 * - FB_DRAW_PPM(startx,starty)
 * - FB_DROP_SHM
 *
 * Protocol for text drawing
 * - IPC_M_SEND_AS_AREA
 * - FB_DRAW_TEXT_DATA
 *
 * @param callid Callid of the current call
 * @param call Current call data
 * @param vp Active viewport
 * @return 0 if the call was not handled byt this function, 1 otherwise
 *
 * note: this function is not threads safe, you would have
 * to redefine static variables with __thread
 */
static int shm_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
{
    static keyfield_t *interbuffer = NULL;
    static size_t intersize = 0;
 
    static char *shm = NULL;
    static ipcarg_t shm_id = 0;
    static size_t shm_size;
 
    int handled = 1;
    int retval = 0;
    viewport_t *vport = &viewports[vp];
    unsigned int x,y;
 
    switch (IPC_GET_METHOD(*call)) {
    case IPC_M_AS_AREA_SEND:
        /* We accept one area for data interchange */
        if (IPC_GET_ARG1(*call) == shm_id) {
            void *dest = as_get_mappable_page(IPC_GET_ARG2(*call));
            shm_size = IPC_GET_ARG2(*call);
            if (!ipc_answer_fast(callid, 0, (sysarg_t)dest, 0))
                shm = dest;
            else
                shm_id = 0;
            if (shm[0] != 'P')
                while (1)
                    ;
            return 1;
        } else {
            intersize = IPC_GET_ARG2(*call);
            receive_comm_area(callid,call,(void **)&interbuffer);
        }
        return 1;
    case FB_PREPARE_SHM:
        if (shm_id)
            retval = EBUSY;
        else
            shm_id = IPC_GET_ARG1(*call);
        break;
       
    case FB_DROP_SHM:
        if (shm) {
            as_area_destroy(shm);
            shm = NULL;
        }
        shm_id = 0;
        break;
 
    case FB_SHM2PIXMAP:
        if (!shm) {
            retval = EINVAL;
            break;
        }
        retval = shm2pixmap(shm, shm_size);
        break;
    case FB_DRAW_PPM:
        if (!shm) {
            retval = EINVAL;
            break;
        }
        x = IPC_GET_ARG1(*call);
        y = IPC_GET_ARG2(*call);
        if (x > vport->width || y > vport->height) {
            retval = EINVAL;
            break;
        }
       
        ppm_draw(shm, shm_size, IPC_GET_ARG1(*call), IPC_GET_ARG2(*call),
             vport->width - x, vport->height - y, putpixel, vp);
        break;
    case FB_DRAW_TEXT_DATA:
        if (!interbuffer) {
            retval = EINVAL;
            break;
        }
        if (intersize < vport->cols*vport->rows*sizeof(*interbuffer)) {
            retval = EINVAL;
            break;
        }
        draw_text_data(vp, interbuffer);
        break;
    default:
        handled = 0;
    }
   
    if (handled)
        ipc_answer_fast(callid, retval, 0, 0);
    return handled;
}
 
/** Save viewport to pixmap */
static int save_vp_to_pixmap(int vp)
{
    int pm;
    pixmap_t *pmap;
    viewport_t *vport = &viewports[vp];
    int x,y;
    int rowsize;
    int tmp;
 
    pm = find_free_pixmap();
    if (pm == -1)
        return ELIMIT;
   
    pmap = &pixmaps[pm];
    pmap->data = malloc(screen.pixelbytes * vport->width * vport->height);
    if (!pmap->data)
        return ENOMEM;
 
    pmap->width = vport->width;
    pmap->height = vport->height;
   
    rowsize = vport->width * screen.pixelbytes;
    for (y=0;y < vport->height; y++) {
        tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
        memcpy(pmap->data + rowsize*y, screen.fbaddress + tmp, rowsize);
    }
    return pm;
}
 
/** Draw pixmap on screen
 *
 * @param vp Viewport to draw on
 * @param pm Pixmap identifier
 */
static int draw_pixmap(int vp, int pm)
{
    pixmap_t *pmap = &pixmaps[pm];
    viewport_t *vport = &viewports[vp];
    int x,y;
    int tmp, srcrowsize;
    int realwidth, realheight, realrowsize;
 
    if (!pmap->data)
        return EINVAL;
 
    realwidth = pmap->width <= vport->width ? pmap->width : vport->width;
    realheight = pmap->height <= vport->height ? pmap->height : vport->height;
 
    srcrowsize = vport->width * screen.pixelbytes;
    realrowsize = realwidth * screen.pixelbytes;
 
    for (y=0; y < realheight; y++) {
        tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
        memcpy(screen.fbaddress + tmp, pmap->data + y * srcrowsize, realrowsize);
    }
    return 0;
}
 
/** Handler for messages concerning pixmap handling */
static int pixmap_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
{
    int handled = 1;
    int retval = 0;
    int i,nvp;
 
    switch (IPC_GET_METHOD(*call)) {
    case FB_VP_DRAW_PIXMAP:
        nvp = IPC_GET_ARG1(*call);
        if (nvp == -1)
            nvp = vp;
        if (nvp < 0 || nvp >= MAX_VIEWPORTS || !viewports[nvp].initialized) {
            retval = EINVAL;
            break;
        }
        i = IPC_GET_ARG2(*call);
        retval = draw_pixmap(nvp, i);
        break;
    case FB_VP2PIXMAP:
        nvp = IPC_GET_ARG1(*call);
        if (nvp == -1)
            nvp = vp;
        if (nvp < 0 || nvp >= MAX_VIEWPORTS || !viewports[nvp].initialized)
            retval = EINVAL;
        else
            retval = save_vp_to_pixmap(nvp);
        break;
    case FB_DROP_PIXMAP:
        i = IPC_GET_ARG1(*call);
        if (i >= MAX_PIXMAPS) {
            retval = EINVAL;
            break;
        }
        if (pixmaps[i].data) {
            free(pixmaps[i].data);
            pixmaps[i].data = NULL;
        }
        break;
    default:
        handled = 0;
    }
 
    if (handled)
        ipc_answer_fast(callid, retval, 0, 0);
    return handled;
   
}
 
/** Function for handling connections to FB
 *
 */
static void fb_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_timeout(&call,250000);
        if (!callid) {
            cursor_blink(vp);
            continue;
        }
        if (shm_handle(callid, &call, vp))
            continue;
        if (pixmap_handle(callid, &call, vp))
            continue;
 
        switch (IPC_GET_METHOD(call)) {
        case IPC_M_PHONE_HUNGUP:
            client_connected = 0;
            /* cleanup other viewports */
            for (i=1; i < MAX_VIEWPORTS; i++)
                vport->initialized = 0;
            ipc_answer_fast(callid,0,0,0);
            return; /* Exit thread */
 
        case FB_PUTCHAR:
        case FB_TRANS_PUTCHAR:
            c = IPC_GET_ARG1(call);
            row = IPC_GET_ARG2(call);
            col = IPC_GET_ARG3(call);
            if (row >= vport->rows || col >= vport->cols) {
                retval = EINVAL;
                break;
            }
            ipc_answer_fast(callid,0,0,0);
 
            draw_char(vp, c, row, col, vport->style, IPC_GET_METHOD(call) == FB_TRANS_PUTCHAR);
            continue; /* msg already answered */
        case FB_CLEAR:
            clear_port(vp);
            cursor_print(vp);
            retval = 0;
            break;
        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;
            cursor_hide(vp);
            vport->cur_col = col;
            vport->cur_row = row;
            cursor_print(vp);
            break;
        case FB_CURSOR_VISIBILITY:
            cursor_hide(vp);
            vport->cursor_active = IPC_GET_ARG1(call);
            cursor_print(vp);
            retval = 0;
            break;
        case FB_GET_CSIZE:
            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;
            }
            cursor_hide(vp);
            scroll_port(vp, i);
            cursor_print(vp);
            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;
            }
            cursor_hide(vp);
            vp = i;
            vport = &viewports[vp];
            cursor_print(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->style.fg_color = IPC_GET_ARG1(call);
            vport->style.bg_color = IPC_GET_ARG2(call);
            retval = 0;
            break;
        case FB_GET_RESOLUTION:
            ipc_answer_fast(callid, 0, screen.xres,screen.yres);
            continue;
        default:
            retval = ENOENT;
        }
        ipc_answer_fast(callid,retval,0,0);
    }
}
 
/** Initialization of framebuffer */
int fb_init(void)
{
    void *fb_ph_addr;
    unsigned int fb_width;
    unsigned int fb_height;
    unsigned int fb_bpp;
    unsigned int fb_scanline;
    void *fb_addr;
    size_t asz;
 
    async_set_client_connection(fb_client_connection);
 
    fb_ph_addr=(void *)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");
 
    asz = fb_scanline*fb_height;
    fb_addr = as_get_mappable_page(asz);
   
    map_physmem(fb_ph_addr, fb_addr, ALIGN_UP(asz,PAGE_SIZE) >>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;
}
 
 

Rev 1567	Rev 1610
1	/*	1	/*
2	* Copyright (C) 2006 Jakub Vana	2	* Copyright (C) 2006 Jakub Vana
3	* Copyright (C) 2006 Ondrej Palkovsky	3	* Copyright (C) 2006 Ondrej Palkovsky
4	* All rights reserved.	4	* All rights reserved.
5	*	5	*
6	* Redistribution and use in source and binary forms, with or without	6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions	7	* modification, are permitted provided that the following conditions
8	* are met:	8	* are met:
9	*	9	*
10	* - Redistributions of source code must retain the above copyright	10	* - Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.	11	* notice, this list of conditions and the following disclaimer.
12	* - Redistributions in binary form must reproduce the above copyright	12	* - Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the	13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.	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	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.	16	* derived from this software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	28	*/
29		29
30	#include <stdlib.h>	30	#include <stdlib.h>
31	#include <unistd.h>	31	#include <unistd.h>
32	#include <string.h>	32	#include <string.h>
33	#include <ddi.h>	33	#include <ddi.h>
34	#include <sysinfo.h>	34	#include <sysinfo.h>
35	#include <align.h>	35	#include <align.h>
36	#include <as.h>	36	#include <as.h>
37	#include <ipc/fb.h>	37	#include <ipc/fb.h>
38	#include <ipc/ipc.h>	38	#include <ipc/ipc.h>
39	#include <ipc/ns.h>	39	#include <ipc/ns.h>
40	#include <ipc/services.h>	40	#include <ipc/services.h>
41	#include <kernel/errno.h>	41	#include <kernel/errno.h>
42	#include <async.h>	42	#include <async.h>
43		43
44	#include "font-8x16.h"	44	#include "font-8x16.h"
45	#include "helenos.xbm"	-
46	#include "fb.h"	45	#include "fb.h"
47	#include "main.h"	46	#include "main.h"
48	#include "../console/screenbuffer.h"	47	#include "../console/screenbuffer.h"
49	#include "ppm.h"	48	#include "ppm.h"
50		49
51	#define DEFAULT_BGCOLOR 0x000080	50	#define DEFAULT_BGCOLOR 0x000080
52	#define DEFAULT_FGCOLOR 0xffff00	51	#define DEFAULT_FGCOLOR 0xffff00
53		52
54	/***************************************************************/	53	/***************************************************************/
55	/* Pixel specific fuctions */	54	/* Pixel specific fuctions */
56		55
57	typedef void (conv2scr_fn_t)(void , int);	56	typedef void (conv2scr_fn_t)(void , int);
58	typedef int (conv2rgb_fn_t)(void );	57	typedef int (conv2rgb_fn_t)(void );
59		58
60	struct {	59	struct {
61	__u8 *fbaddress ;	60	__u8 *fbaddress ;
62		61
63	unsigned int xres ;	62	unsigned int xres ;
64	unsigned int yres ;	63	unsigned int yres ;
65	unsigned int scanline ;	64	unsigned int scanline ;
66	unsigned int pixelbytes ;	65	unsigned int pixelbytes ;
67		66
68	conv2scr_fn_t rgb2scr;	67	conv2scr_fn_t rgb2scr;
69	conv2rgb_fn_t scr2rgb;	68	conv2rgb_fn_t scr2rgb;
70	} screen;	69	} screen;
71		70
72	typedef struct {	71	typedef struct {
73	int initialized;	72	int initialized;
74	unsigned int x, y;	73	unsigned int x, y;
75	unsigned int width, height;	74	unsigned int width, height;
76		75
77	/* Text support in window */	76	/* Text support in window */
78	unsigned int rows, cols;	77	unsigned int rows, cols;
79	/* Style for text printing */	78	/* Style for text printing */
80	style_t style;	79	style_t style;
81	/* Auto-cursor position */	80	/* Auto-cursor position */
82	int cursor_active, cur_col, cur_row;	81	int cursor_active, cur_col, cur_row;
83	int cursor_shown;	82	int cursor_shown;
84	} viewport_t;	83	} viewport_t;
85		84
86	/** Maximum number of saved pixmaps	85	/** Maximum number of saved pixmaps
87	* Pixmap is a saved rectangle	86	* Pixmap is a saved rectangle
88	*/	87	*/
89	#define MAX_PIXMAPS 256	88	#define MAX_PIXMAPS 256
90	typedef struct {	89	typedef struct {
91	unsigned int width;	90	unsigned int width;
92	unsigned int height;	91	unsigned int height;
93	__u8 *data;	92	__u8 *data;
94	} pixmap_t;	93	} pixmap_t;
95	static pixmap_t pixmaps[MAX_PIXMAPS];	94	static pixmap_t pixmaps[MAX_PIXMAPS];
96		95
97	/* Viewport is a rectangular area on the screen */	96	/* Viewport is a rectangular area on the screen */
98	#define MAX_VIEWPORTS 128	97	#define MAX_VIEWPORTS 128
99	static viewport_t viewports[128];	98	static viewport_t viewports[128];
100		99
101	/* Allow only 1 connection */	100	/* Allow only 1 connection */
102	static int client_connected = 0;	101	static int client_connected = 0;
103		102
104	#define RED(x, bits) ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))	103	#define RED(x, bits) ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))
105	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))	104	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
106	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))	105	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
107		106
108	#define COL_WIDTH 8	107	#define COL_WIDTH 8
109	#define ROW_BYTES (screen.scanline * FONT_SCANLINES)	108	#define ROW_BYTES (screen.scanline * FONT_SCANLINES)
110		109
111	#define POINTPOS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)	110	#define POINTPOS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)
112		111
113	/* Conversion routines between different color representations */	112	/* Conversion routines between different color representations */
114	static void rgb_4byte(void *dst, int rgb)	113	static void rgb_4byte(void *dst, int rgb)
115	{	114	{
116	(int )dst = rgb;	115	(int )dst = rgb;
117	}	116	}
118		117
119	static int byte4_rgb(void *src)	118	static int byte4_rgb(void *src)
120	{	119	{
121	return ((int )src) & 0xffffff;	120	return ((int )src) & 0xffffff;
122	}	121	}
123		122
124	static void rgb_3byte(void *dst, int rgb)	123	static void rgb_3byte(void *dst, int rgb)
125	{	124	{
126	__u8 *scr = dst;	125	__u8 *scr = dst;
127	#if (defined(BIG_ENDIAN) \|\| defined(FB_BIG_ENDIAN))	126	#if (defined(BIG_ENDIAN) \|\| defined(FB_BIG_ENDIAN))
128	scr[0] = RED(rgb, 8);	127	scr[0] = RED(rgb, 8);
129	scr[1] = GREEN(rgb, 8);	128	scr[1] = GREEN(rgb, 8);
130	scr[2] = BLUE(rgb, 8);	129	scr[2] = BLUE(rgb, 8);
131	#else	130	#else
132	scr[2] = RED(rgb, 8);	131	scr[2] = RED(rgb, 8);
133	scr[1] = GREEN(rgb, 8);	132	scr[1] = GREEN(rgb, 8);
134	scr[0] = BLUE(rgb, 8);	133	scr[0] = BLUE(rgb, 8);
135	#endif	134	#endif
136		135
137		136
138	}	137	}
139		138
140	static int byte3_rgb(void *src)	139	static int byte3_rgb(void *src)
141	{	140	{
142	__u8 *scr = src;	141	__u8 *scr = src;
143	#if (defined(BIG_ENDIAN) \|\| defined(FB_BIG_ENDIAN))	142	#if (defined(BIG_ENDIAN) \|\| defined(FB_BIG_ENDIAN))
144	return scr[0] << 16 \| scr[1] << 8 \| scr[2];	143	return scr[0] << 16 \| scr[1] << 8 \| scr[2];
145	#else	144	#else
146	return scr[2] << 16 \| scr[1] << 8 \| scr[0];	145	return scr[2] << 16 \| scr[1] << 8 \| scr[0];
147	#endif	146	#endif
148	}	147	}
149		148
150	/** 16-bit depth (5:6:5) */	149	/** 16-bit depth (5:6:5) */
151	static void rgb_2byte(void *dst, int rgb)	150	static void rgb_2byte(void *dst, int rgb)
152	{	151	{
153	/* 5-bit, 6-bits, 5-bits */	152	/* 5-bit, 6-bits, 5-bits */
154	((__u16 )(dst)) = RED(rgb, 5) << 11 \| GREEN(rgb, 6) << 5 \| BLUE(rgb, 5);	153	((__u16 )(dst)) = RED(rgb, 5) << 11 \| GREEN(rgb, 6) << 5 \| BLUE(rgb, 5);
155	}	154	}
156		155
157	/** 16-bit depth (5:6:5) */	156	/** 16-bit depth (5:6:5) */
158	static int byte2_rgb(void *src)	157	static int byte2_rgb(void *src)
159	{	158	{
160	int color = (__u16 )(src);	159	int color = (__u16 )(src);
161	return (((color >> 11) & 0x1f) << (16 + 3)) \| (((color >> 5) & 0x3f) << (8 + 2)) \| ((color & 0x1f) << 3);	160	return (((color >> 11) & 0x1f) << (16 + 3)) \| (((color >> 5) & 0x3f) << (8 + 2)) \| ((color & 0x1f) << 3);
162	}	161	}
163		162
164	/** Put pixel - 8-bit depth (3:2:3) */	163	/** Put pixel - 8-bit depth (3:2:3) */
165	static void rgb_1byte(void *dst, int rgb)	164	static void rgb_1byte(void *dst, int rgb)
166	{	165	{
167	(__u8 )dst = RED(rgb, 3) << 5 \| GREEN(rgb, 2) << 3 \| BLUE(rgb, 3);	166	(__u8 )dst = RED(rgb, 3) << 5 \| GREEN(rgb, 2) << 3 \| BLUE(rgb, 3);
168	}	167	}
169		168
170	/** Return pixel color - 8-bit depth (3:2:3) */	169	/** Return pixel color - 8-bit depth (3:2:3) */
171	static int byte1_rgb(void *src)	170	static int byte1_rgb(void *src)
172	{	171	{
173	int color = (__u8 )src;	172	int color = (__u8 )src;
174	return (((color >> 5) & 0x7) << (16 + 5)) \| (((color >> 3) & 0x3) << (8 + 6)) \| ((color & 0x7) << 5);	173	return (((color >> 5) & 0x7) << (16 + 5)) \| (((color >> 3) & 0x3) << (8 + 6)) \| ((color & 0x7) << 5);
175	}	174	}
176		175
177	/** Put pixel into viewport	176	/** Put pixel into viewport
178	*	177	*
179	* @param vp Viewport identification	178	* @param vp Viewport identification
180	* @param x X coord relative to viewport	179	* @param x X coord relative to viewport
181	* @param y Y coord relative to viewport	180	* @param y Y coord relative to viewport
182	* @param color RGB color	181	* @param color RGB color
183	*/	182	*/
184	static void putpixel(int vp, unsigned int x, unsigned int y, int color)	183	static void putpixel(int vp, unsigned int x, unsigned int y, int color)
185	{	184	{
186	int dx = viewports[vp].x + x;	185	int dx = viewports[vp].x + x;
187	int dy = viewports[vp].y + y;	186	int dy = viewports[vp].y + y;
188	(*screen.rgb2scr)(&screen.fbaddress[POINTPOS(dx,dy)],color);	187	(*screen.rgb2scr)(&screen.fbaddress[POINTPOS(dx,dy)],color);
189	}	188	}
190	/** Get pixel from viewport */	189	/** Get pixel from viewport */
191	static int getpixel(int vp, unsigned int x, unsigned int y)	190	static int getpixel(int vp, unsigned int x, unsigned int y)
192	{	191	{
193	int dx = viewports[vp].x + x;	192	int dx = viewports[vp].x + x;
194	int dy = viewports[vp].y + y;	193	int dy = viewports[vp].y + y;
195		194
196	return (*screen.scr2rgb)(&screen.fbaddress[POINTPOS(dx,dy)]);	195	return (*screen.scr2rgb)(&screen.fbaddress[POINTPOS(dx,dy)]);
197	}	196	}
198		197
199	/** Fill line with color BGCOLOR */	198	/** Fill line with color BGCOLOR */
200	static void clear_line(int vp, unsigned int y)	199	static void clear_line(int vp, unsigned int y)
201	{	200	{
202	unsigned int x;	201	unsigned int x;
203	for (x = 0; x < viewports[vp].width; x++)	202	for (x = 0; x < viewports[vp].width; x++)
204	putpixel(vp, x, y, viewports[vp].style.bg_color);	203	putpixel(vp, x, y, viewports[vp].style.bg_color);
205	}	204	}
206		205
207	static void draw_rectangle(int vp, unsigned int sx, unsigned int sy,	206	static void draw_rectangle(int vp, unsigned int sx, unsigned int sy,
208	unsigned int width, unsigned int height,	207	unsigned int width, unsigned int height,
209	int color)	208	int color)
210	{	209	{
211	unsigned int x, y;	210	unsigned int x, y;
212		211
213	/* Clear first line */	212	/* Clear first line */
214	for (x = 0; x < width; x++)	213	for (x = 0; x < width; x++)
215	putpixel(vp, sx + x, sy, color);	214	putpixel(vp, sx + x, sy, color);
216		215
217	/* Recompute to screen coords */	216	/* Recompute to screen coords */
218	sx += viewports[vp].x;	217	sx += viewports[vp].x;
219	sy += viewports[vp].y;	218	sy += viewports[vp].y;
220	/* Copy the rest */	219	/* Copy the rest */
221	for (y = sy+1;y < sy+height; y++)	220	for (y = sy+1;y < sy+height; y++)
222	memcpy(&screen.fbaddress[POINTPOS(sx,y)],	221	memcpy(&screen.fbaddress[POINTPOS(sx,y)],
223	&screen.fbaddress[POINTPOS(sx,sy)],	222	&screen.fbaddress[POINTPOS(sx,sy)],
224	screen.pixelbytes * width);	223	screen.pixelbytes * width);
225		224
226	}	225	}
227		226
228	/** Fill viewport with background color */	227	/** Fill viewport with background color */
229	static void clear_port(int vp)	228	static void clear_port(int vp)
230	{	229	{
231	viewport_t *vport = &viewports[vp];	230	viewport_t *vport = &viewports[vp];
232		231
233	draw_rectangle(vp, 0, 0, vport->width, vport->height, vport->style.bg_color);	232	draw_rectangle(vp, 0, 0, vport->width, vport->height, vport->style.bg_color);
234	}	233	}
235		234
236	/** Scroll port up/down	235	/** Scroll port up/down
237	*	236	*
238	* @param vp Viewport to scroll	237	* @param vp Viewport to scroll
239	* @param rows Positive number - scroll up, negative - scroll down	238	* @param rows Positive number - scroll up, negative - scroll down
240	*/	239	*/
241	static void scroll_port(int vp, int rows)	240	static void scroll_port(int vp, int rows)
242	{	241	{
243	int y;	242	int y;
244	int startline;	243	int startline;
245	int endline;	244	int endline;
246	viewport_t *vport = &viewports[vp];	245	viewport_t *vport = &viewports[vp];
247		246
248	if (rows > 0) {	247	if (rows > 0) {
249	for (y=vport->y; y < vport->y+vport->height - rows*FONT_SCANLINES; y++)	248	for (y=vport->y; y < vport->y+vport->height - rows*FONT_SCANLINES; y++)
250	memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],	249	memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],
251	&screen.fbaddress[POINTPOS(vport->x,y + rows*FONT_SCANLINES)],	250	&screen.fbaddress[POINTPOS(vport->x,y + rows*FONT_SCANLINES)],
252	screen.pixelbytes * vport->width);	251	screen.pixelbytes * vport->width);
253	draw_rectangle(vp, 0, FONT_SCANLINES*(vport->rows - 1),	252	draw_rectangle(vp, 0, FONT_SCANLINES*(vport->rows - 1),
254	vport->width, FONT_SCANLINES, vport->style.bg_color);	253	vport->width, FONT_SCANLINES, vport->style.bg_color);
255	} else if (rows < 0) {	254	} else if (rows < 0) {
256	rows = -rows;	255	rows = -rows;
257	for (y=vport->y + vport->height-1; y >= vport->y + rows*FONT_SCANLINES; y--)	256	for (y=vport->y + vport->height-1; y >= vport->y + rows*FONT_SCANLINES; y--)
258	memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],	257	memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],
259	&screen.fbaddress[POINTPOS(vport->x,y - rows*FONT_SCANLINES)],	258	&screen.fbaddress[POINTPOS(vport->x,y - rows*FONT_SCANLINES)],
260	screen.pixelbytes * vport->width);	259	screen.pixelbytes * vport->width);
261	draw_rectangle(vp, 0, 0, vport->width, FONT_SCANLINES, vport->style.bg_color);	260	draw_rectangle(vp, 0, 0, vport->width, FONT_SCANLINES, vport->style.bg_color);
262	}	261	}
263	}	262	}
264		263
265	static void invert_pixel(int vp,unsigned int x, unsigned int y)	264	static void invert_pixel(int vp,unsigned int x, unsigned int y)
266	{	265	{
267	putpixel(vp, x, y, ~getpixel(vp, x, y));	266	putpixel(vp, x, y, ~getpixel(vp, x, y));
268	}	267	}
269		268
270		269
271	/***************************************************************/	270	/***************************************************************/
272	/* Character-console functions */	271	/* Character-console functions */
273		272
274	/** Draw character at given position	273	/** Draw character at given position
275	*	274	*
276	* @param vp Viewport where the character is printed	275	* @param vp Viewport where the character is printed
277	* @param sx Coordinates of top-left of the character	276	* @param sx Coordinates of top-left of the character
278	* @param sy Coordinates of top-left of the character	277	* @param sy Coordinates of top-left of the character
279	* @param style Color of the character	278	* @param style Color of the character
280	* @param transparent If false, print background color	279	* @param transparent If false, print background color
281	*/	280	*/
282	static void draw_glyph(int vp,__u8 glyph, unsigned int sx, unsigned int sy,	281	static void draw_glyph(int vp,__u8 glyph, unsigned int sx, unsigned int sy,
283	style_t style, int transparent)	282	style_t style, int transparent)
284	{	283	{
285	int i;	284	int i;
286	unsigned int y;	285	unsigned int y;
287	unsigned int glline;	286	unsigned int glline;
288		287
289	for (y = 0; y < FONT_SCANLINES; y++) {	288	for (y = 0; y < FONT_SCANLINES; y++) {
290	glline = fb_font[glyph * FONT_SCANLINES + y];	289	glline = fb_font[glyph * FONT_SCANLINES + y];
291	for (i = 0; i < 8; i++) {	290	for (i = 0; i < 8; i++) {
292	if (glline & (1 << (7 - i)))	291	if (glline & (1 << (7 - i)))
293	putpixel(vp, sx + i, sy + y, style.fg_color);	292	putpixel(vp, sx + i, sy + y, style.fg_color);
294	else if (!transparent)	293	else if (!transparent)
295	putpixel(vp, sx + i, sy + y, style.bg_color);	294	putpixel(vp, sx + i, sy + y, style.bg_color);
296	}	295	}
297	}	296	}
298	}	297	}
299		298
300	/** Invert character at given position */	299	/** Invert character at given position */
301	static void invert_char(int vp,unsigned int row, unsigned int col)	300	static void invert_char(int vp,unsigned int row, unsigned int col)
302	{	301	{
303	unsigned int x;	302	unsigned int x;
304	unsigned int y;	303	unsigned int y;
305		304
306	for (x = 0; x < COL_WIDTH; x++)	305	for (x = 0; x < COL_WIDTH; x++)
307	for (y = 0; y < FONT_SCANLINES; y++)	306	for (y = 0; y < FONT_SCANLINES; y++)
308	invert_pixel(vp, col * COL_WIDTH + x, row * FONT_SCANLINES + y);	307	invert_pixel(vp, col * COL_WIDTH + x, row * FONT_SCANLINES + y);
309	}	308	}
310		309
311	/***************************************************************/	310	/***************************************************************/
312	/* Stdout specific functions */	311	/* Stdout specific functions */
313		312
314		313
315	/** Create new viewport	314	/** Create new viewport
316	*	315	*
317	* @return New viewport number	316	* @return New viewport number
318	*/	317	*/
319	static int viewport_create(unsigned int x, unsigned int y,unsigned int width,	318	static int viewport_create(unsigned int x, unsigned int y,unsigned int width,
320	unsigned int height)	319	unsigned int height)
321	{	320	{
322	int i;	321	int i;
323		322
324	for (i=0; i < MAX_VIEWPORTS; i++) {	323	for (i=0; i < MAX_VIEWPORTS; i++) {
325	if (!viewports[i].initialized)	324	if (!viewports[i].initialized)
326	break;	325	break;
327	}	326	}
328	if (i == MAX_VIEWPORTS)	327	if (i == MAX_VIEWPORTS)
329	return ELIMIT;	328	return ELIMIT;
330		329
331	if (width ==0 \|\| height == 0 \|\|	330	if (width ==0 \|\| height == 0 \|\|
332	x+width > screen.xres \|\| y+height > screen.yres)	331	x+width > screen.xres \|\| y+height > screen.yres)
333	return EINVAL;	332	return EINVAL;
334	if (width < FONT_SCANLINES \|\| height < COL_WIDTH)	333	if (width < FONT_SCANLINES \|\| height < COL_WIDTH)
335	return EINVAL;	334	return EINVAL;
336		335
337	viewports[i].x = x;	336	viewports[i].x = x;
338	viewports[i].y = y;	337	viewports[i].y = y;
339	viewports[i].width = width;	338	viewports[i].width = width;
340	viewports[i].height = height;	339	viewports[i].height = height;
341		340
342	viewports[i].rows = height / FONT_SCANLINES;	341	viewports[i].rows = height / FONT_SCANLINES;
343	viewports[i].cols = width / COL_WIDTH;	342	viewports[i].cols = width / COL_WIDTH;
344		343
345	viewports[i].style.bg_color = DEFAULT_BGCOLOR;	344	viewports[i].style.bg_color = DEFAULT_BGCOLOR;
346	viewports[i].style.fg_color = DEFAULT_FGCOLOR;	345	viewports[i].style.fg_color = DEFAULT_FGCOLOR;
347		346
348	viewports[i].cur_col = 0;	347	viewports[i].cur_col = 0;
349	viewports[i].cur_row = 0;	348	viewports[i].cur_row = 0;
350	viewports[i].cursor_active = 0;	349	viewports[i].cursor_active = 0;
351		350
352	viewports[i].initialized = 1;	351	viewports[i].initialized = 1;
353		352
354	return i;	353	return i;
355	}	354	}
356		355
357		356
358	/** Initialize framebuffer as a chardev output device	357	/** Initialize framebuffer as a chardev output device
359	*	358	*
360	* @param addr Address of theframebuffer	359	* @param addr Address of theframebuffer
361	* @param x Screen width in pixels	360	* @param x Screen width in pixels
362	* @param y Screen height in pixels	361	* @param y Screen height in pixels
363	* @param bpp Bits per pixel (8, 16, 24, 32)	362	* @param bpp Bits per pixel (8, 16, 24, 32)
364	* @param scan Bytes per one scanline	363	* @param scan Bytes per one scanline
365	*	364	*
366	*/	365	*/
367	static void screen_init(void *addr, unsigned int xres, unsigned int yres, unsigned int bpp, unsigned int scan)	366	static void screen_init(void *addr, unsigned int xres, unsigned int yres, unsigned int bpp, unsigned int scan)
368	{	367	{
369	switch (bpp) {	368	switch (bpp) {
370	case 8:	369	case 8:
371	screen.rgb2scr = rgb_1byte;	370	screen.rgb2scr = rgb_1byte;
372	screen.scr2rgb = byte1_rgb;	371	screen.scr2rgb = byte1_rgb;
373	screen.pixelbytes = 1;	372	screen.pixelbytes = 1;
374	break;	373	break;
375	case 16:	374	case 16:
376	screen.rgb2scr = rgb_2byte;	375	screen.rgb2scr = rgb_2byte;
377	screen.scr2rgb = byte2_rgb;	376	screen.scr2rgb = byte2_rgb;
378	screen.pixelbytes = 2;	377	screen.pixelbytes = 2;
379	break;	378	break;
380	case 24:	379	case 24:
381	screen.rgb2scr = rgb_3byte;	380	screen.rgb2scr = rgb_3byte;
382	screen.scr2rgb = byte3_rgb;	381	screen.scr2rgb = byte3_rgb;
383	screen.pixelbytes = 3;	382	screen.pixelbytes = 3;
384	break;	383	break;
385	case 32:	384	case 32:
386	screen.rgb2scr = rgb_4byte;	385	screen.rgb2scr = rgb_4byte;
387	screen.scr2rgb = byte4_rgb;	386	screen.scr2rgb = byte4_rgb;
388	screen.pixelbytes = 4;	387	screen.pixelbytes = 4;
389	break;	388	break;
390	}	389	}
391		390
392		391
393	screen.fbaddress = (unsigned char *) addr;	392	screen.fbaddress = (unsigned char *) addr;
394	screen.xres = xres;	393	screen.xres = xres;
395	screen.yres = yres;	394	screen.yres = yres;
396	screen.scanline = scan;	395	screen.scanline = scan;
397		396
398	/* Create first viewport */	397	/* Create first viewport */
399	viewport_create(0,0,xres,yres);	398	viewport_create(0,0,xres,yres);
400	}	399	}
401		400
402	/** Hide cursor if it is shown */	401	/** Hide cursor if it is shown */
403	static void cursor_hide(int vp)	402	static void cursor_hide(int vp)
404	{	403	{
405	viewport_t *vport = &viewports[vp];	404	viewport_t *vport = &viewports[vp];
406		405
407	if (vport->cursor_active && vport->cursor_shown) {	406	if (vport->cursor_active && vport->cursor_shown) {
408	invert_char(vp, vport->cur_row, vport->cur_col);	407	invert_char(vp, vport->cur_row, vport->cur_col);
409	vport->cursor_shown = 0;	408	vport->cursor_shown = 0;
410	}	409	}
411	}	410	}
412		411
413	/** Show cursor if cursor showing is enabled */	412	/** Show cursor if cursor showing is enabled */
414	static void cursor_print(int vp)	413	static void cursor_print(int vp)
415	{	414	{
416	viewport_t *vport = &viewports[vp];	415	viewport_t *vport = &viewports[vp];
417		416
418	/* Do not check for cursor_shown */	417	/* Do not check for cursor_shown */
419	if (vport->cursor_active) {	418	if (vport->cursor_active) {
420	invert_char(vp, vport->cur_row, vport->cur_col);	419	invert_char(vp, vport->cur_row, vport->cur_col);
421	vport->cursor_shown = 1;	420	vport->cursor_shown = 1;
422	}	421	}
423	}	422	}
424		423
425	/** Invert cursor, if it is enabled */	424	/** Invert cursor, if it is enabled */
426	static void cursor_blink(int vp)	425	static void cursor_blink(int vp)
427	{	426	{
428	viewport_t *vport = &viewports[vp];	427	viewport_t *vport = &viewports[vp];
429		428
430	if (vport->cursor_shown)	429	if (vport->cursor_shown)
431	cursor_hide(vp);	430	cursor_hide(vp);
432	else	431	else
433	cursor_print(vp);	432	cursor_print(vp);
434	}	433	}
435		434
436	/** Draw character at given position relative to viewport	435	/** Draw character at given position relative to viewport
437	*	436	*
438	* @param vp Viewport identification	437	* @param vp Viewport identification
439	* @param c Character to print	438	* @param c Character to print
440	* @param row Screen position relative to viewport	439	* @param row Screen position relative to viewport
441	* @param col Screen position relative to viewport	440	* @param col Screen position relative to viewport
442	* @param transparent If false, print background color with character	441	* @param transparent If false, print background color with character
443	*/	442	*/
444	static void draw_char(int vp, char c, unsigned int row, unsigned int col, style_t style, int transparent)	443	static void draw_char(int vp, char c, unsigned int row, unsigned int col, style_t style, int transparent)
445	{	444	{
446	viewport_t *vport = &viewports[vp];	445	viewport_t *vport = &viewports[vp];
447		446
448	/* Optimize - do not hide cursor if we are going to overwrite it */	447	/* Optimize - do not hide cursor if we are going to overwrite it */
449	if (vport->cursor_active && vport->cursor_shown &&	448	if (vport->cursor_active && vport->cursor_shown &&
450	(vport->cur_col != col \|\| vport->cur_row != row))	449	(vport->cur_col != col \|\| vport->cur_row != row))
451	invert_char(vp, vport->cur_row, vport->cur_col);	450	invert_char(vp, vport->cur_row, vport->cur_col);
452		451
453	draw_glyph(vp, c, col * COL_WIDTH, row * FONT_SCANLINES, style, transparent);	452	draw_glyph(vp, c, col * COL_WIDTH, row * FONT_SCANLINES, style, transparent);
454		453
455	vport->cur_col = col;	454	vport->cur_col = col;
456	vport->cur_row = row;	455	vport->cur_row = row;
457		456
458	vport->cur_col++;	457	vport->cur_col++;
459	if (vport->cur_col>= vport->cols) {	458	if (vport->cur_col>= vport->cols) {
460	vport->cur_col = 0;	459	vport->cur_col = 0;
461	vport->cur_row++;	460	vport->cur_row++;
462	if (vport->cur_row >= vport->rows)	461	if (vport->cur_row >= vport->rows)
463	vport->cur_row--;	462	vport->cur_row--;
464	}	463	}
465	cursor_print(vp);	464	cursor_print(vp);
466	}	465	}
467		466
468	/** Draw text data to viewport	467	/** Draw text data to viewport
469	*	468	*
470	* @param vp Viewport id	469	* @param vp Viewport id
471	* @param data Text data fitting exactly into viewport	470	* @param data Text data fitting exactly into viewport
472	*/	471	*/
473	static void draw_text_data(int vp, keyfield_t *data)	472	static void draw_text_data(int vp, keyfield_t *data)
474	{	473	{
475	viewport_t *vport = &viewports[vp];	474	viewport_t *vport = &viewports[vp];
476	int i;	475	int i;
477	char c;	476	char c;
478	int col,row;	477	int col,row;
479		478
480	clear_port(vp);	479	clear_port(vp);
481	for (i=0; i < vport->cols * vport->rows; i++) {	480	for (i=0; i < vport->cols * vport->rows; i++) {
482	if (data[i].character == ' ' && style_same(data[i].style,vport->style))	481	if (data[i].character == ' ' && style_same(data[i].style,vport->style))
483	continue;	482	continue;
484	col = i % vport->cols;	483	col = i % vport->cols;
485	row = i / vport->cols;	484	row = i / vport->cols;
486	draw_glyph(vp, data[i].character, col * COL_WIDTH, row * FONT_SCANLINES,	485	draw_glyph(vp, data[i].character, col * COL_WIDTH, row * FONT_SCANLINES,
487	data[i].style, style_same(data[i].style,vport->style));	486	data[i].style, style_same(data[i].style,vport->style));
488	}	487	}
489	cursor_print(vp);	488	cursor_print(vp);
490	}	489	}
491		490
492		491
493	/** Return first free pixmap */	492	/** Return first free pixmap */
494	static int find_free_pixmap(void)	493	static int find_free_pixmap(void)
495	{	494	{
496	int i;	495	int i;
497		496
498	for (i=0;i < MAX_PIXMAPS;i++)	497	for (i=0;i < MAX_PIXMAPS;i++)
499	if (!pixmaps[i].data)	498	if (!pixmaps[i].data)
500	return i;	499	return i;

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(root)/uspace/trunk/fb/fb.c @ 1567 – Rev 1567 → 1610