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                0xf0f0f0
#define DEFAULT_FGCOLOR                0x0
 
/***************************************************************/
/* 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;
 
#define MAX_ANIM_LEN    8
#define MAX_ANIMATIONS  4
typedef struct {
    int initialized;
    int enabled;
    unsigned int vp;
 
    unsigned int pos;
    unsigned int animlen;
    unsigned int pixmaps[MAX_ANIM_LEN];
} animation_t;
static animation_t animations[MAX_ANIMATIONS];
static int anims_enabled;
 
/** 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;
}
 
/** Tick animation one step forward */
static void anims_tick(void)
{
    int i;
    static int counts = 0;
   
    /* Limit redrawing */
    counts = (counts+1) % 8;
    if (counts)
        return;
 
    for (i=0; i < MAX_ANIMATIONS; i++) {
        if (!animations[i].animlen || !animations[i].initialized || !animations[i].enabled)
            continue;
        draw_pixmap(animations[i].vp, animations[i].pixmaps[animations[i].pos]);
        animations[i].pos = (animations[i].pos+1) % animations[i].animlen;
    }
}
 
static int anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
{
    int handled = 1;
    int retval = 0;
    int i,nvp;
    int newval;
 
    switch (IPC_GET_METHOD(*call)) {
    case FB_ANIM_CREATE:
        nvp = IPC_GET_ARG1(*call);
        if (nvp == -1)
            nvp = vp;
        if (nvp >= MAX_VIEWPORTS || nvp < 0 || !viewports[nvp].initialized) {
            retval = EINVAL;
            break;
        }
        for (i=0; i < MAX_ANIMATIONS; i++) {
            if (! animations[i].initialized)
                break;
        }
        if (i == MAX_ANIMATIONS) {
            retval = ELIMIT;
            break;
        }
        animations[i].initialized = 1;
        animations[i].animlen = 0;
        animations[i].pos = 0;
        animations[i].enabled = 0;
        animations[i].vp = nvp;
        retval = i;
        break;
    case FB_ANIM_DROP:
        i = IPC_GET_ARG1(*call);
        if (nvp >= MAX_ANIMATIONS || i < 0) {
            retval = EINVAL;
            break;
        }
        animations[i].initialized = 0;
        break;
    case FB_ANIM_ADDPIXMAP:
        i = IPC_GET_ARG1(*call);
        if (i >= MAX_ANIMATIONS || i < 0 || !animations[i].initialized) {
            retval = EINVAL;
            break;
        }
        if (animations[i].animlen == MAX_ANIM_LEN) {
            retval = ELIMIT;
            break;
        }
        newval = IPC_GET_ARG2(*call);
        if (newval < 0 || newval > MAX_PIXMAPS || !pixmaps[newval].data) {
            retval = EINVAL;
            break;
        }
        animations[i].pixmaps[animations[i].animlen++] = newval;
        break;
    case FB_ANIM_CHGVP:
        i = IPC_GET_ARG1(*call);
        if (i >= MAX_ANIMATIONS || i < 0) {
            retval = EINVAL;
            break;
        }
        nvp = IPC_GET_ARG2(*call);
        if (nvp == -1)
            nvp = vp;
        if (nvp >= MAX_VIEWPORTS || nvp < 0 || !viewports[nvp].initialized) {
            retval = EINVAL;
            break;
        }
        animations[i].vp = nvp;
        break;
    case FB_ANIM_START:
    case FB_ANIM_STOP:
        i = IPC_GET_ARG1(*call);
        if (i >= MAX_ANIMATIONS || i < 0) {
            retval = EINVAL;
            break;
        }
        newval = (IPC_GET_METHOD(*call) == FB_ANIM_START);
        if (newval ^ animations[i].enabled) {
            animations[i].enabled = newval;
            anims_enabled += newval ? 1 : -1;
        }
        break;
    default:
        handled = 0;
    }
    if (handled)
        ipc_answer_fast(callid, retval, 0, 0);
    return handled;
}
 
/** 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) {
        if (vport->cursor_active || anims_enabled)
            callid = async_get_call_timeout(&call,250000);
        else
            callid = async_get_call(&call);
 
        if (!callid) {
            cursor_blink(vp);
            anims_tick();
            continue;
        }
        if (shm_handle(callid, &call, vp))
            continue;
        if (pixmap_handle(callid, &call, vp))
            continue;
        if (anim_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;
 
            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 1646	Rev 1648
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 "fb.h"	45	#include "fb.h"
46	#include "main.h"	46	#include "main.h"
47	#include "../console/screenbuffer.h"	47	#include "../console/screenbuffer.h"
48	#include "ppm.h"	48	#include "ppm.h"
49		49
50	#define DEFAULT_BGCOLOR 0xf0f0f0	50	#define DEFAULT_BGCOLOR 0xf0f0f0
51	#define DEFAULT_FGCOLOR 0x0	51	#define DEFAULT_FGCOLOR 0x0
52		52
53	/***************************************************************/	53	/***************************************************************/
54	/* Pixel specific fuctions */	54	/* Pixel specific fuctions */
55		55
56	typedef void (conv2scr_fn_t)(void , int);	56	typedef void (conv2scr_fn_t)(void , int);
57	typedef int (conv2rgb_fn_t)(void );	57	typedef int (conv2rgb_fn_t)(void );
58		58
59	struct {	59	struct {
60	__u8 *fbaddress ;	60	__u8 *fbaddress ;
61		61
62	unsigned int xres ;	62	unsigned int xres ;
63	unsigned int yres ;	63	unsigned int yres ;
64	unsigned int scanline ;	64	unsigned int scanline ;
65	unsigned int pixelbytes ;	65	unsigned int pixelbytes ;
66		66
67	conv2scr_fn_t rgb2scr;	67	conv2scr_fn_t rgb2scr;
68	conv2rgb_fn_t scr2rgb;	68	conv2rgb_fn_t scr2rgb;
69	} screen;	69	} screen;
70		70
71	typedef struct {	71	typedef struct {
72	int initialized;	72	int initialized;
73	unsigned int x, y;	73	unsigned int x, y;
74	unsigned int width, height;	74	unsigned int width, height;
75		75
76	/* Text support in window */	76	/* Text support in window */
77	unsigned int rows, cols;	77	unsigned int rows, cols;
78	/* Style for text printing */	78	/* Style for text printing */
79	style_t style;	79	style_t style;
80	/* Auto-cursor position */	80	/* Auto-cursor position */
81	int cursor_active, cur_col, cur_row;	81	int cursor_active, cur_col, cur_row;
82	int cursor_shown;	82	int cursor_shown;
83	} viewport_t;	83	} viewport_t;
84		84
85	#define MAX_ANIM_LEN 8	85	#define MAX_ANIM_LEN 8
86	#define MAX_ANIMATIONS 4	86	#define MAX_ANIMATIONS 4
87	typedef struct {	87	typedef struct {
88	int initialized;	88	int initialized;
89	int enabled;	89	int enabled;
90	unsigned int vp;	90	unsigned int vp;
91		91
92	unsigned int pos;	92	unsigned int pos;
93	unsigned int animlen;	93	unsigned int animlen;
94	unsigned int pixmaps[MAX_ANIM_LEN];	94	unsigned int pixmaps[MAX_ANIM_LEN];
95	} animation_t;	95	} animation_t;
96	static animation_t animations[MAX_ANIMATIONS];	96	static animation_t animations[MAX_ANIMATIONS];
97	static int anims_enabled;	97	static int anims_enabled;
98		98
99	/** Maximum number of saved pixmaps	99	/** Maximum number of saved pixmaps
100	* Pixmap is a saved rectangle	100	* Pixmap is a saved rectangle
101	*/	101	*/
102	#define MAX_PIXMAPS 256	102	#define MAX_PIXMAPS 256
103	typedef struct {	103	typedef struct {
104	unsigned int width;	104	unsigned int width;
105	unsigned int height;	105	unsigned int height;
106	__u8 *data;	106	__u8 *data;
107	} pixmap_t;	107	} pixmap_t;
108	static pixmap_t pixmaps[MAX_PIXMAPS];	108	static pixmap_t pixmaps[MAX_PIXMAPS];
109		109
110	/* Viewport is a rectangular area on the screen */	110	/* Viewport is a rectangular area on the screen */
111	#define MAX_VIEWPORTS 128	111	#define MAX_VIEWPORTS 128
112	static viewport_t viewports[128];	112	static viewport_t viewports[128];
113		113
114	/* Allow only 1 connection */	114	/* Allow only 1 connection */
115	static int client_connected = 0;	115	static int client_connected = 0;
116		116
117	#define RED(x, bits) ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))	117	#define RED(x, bits) ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))
118	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))	118	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
119	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))	119	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
120		120
121	#define COL_WIDTH 8	121	#define COL_WIDTH 8
122	#define ROW_BYTES (screen.scanline * FONT_SCANLINES)	122	#define ROW_BYTES (screen.scanline * FONT_SCANLINES)
123		123
124	#define POINTPOS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)	124	#define POINTPOS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)
125		125
126	/* Conversion routines between different color representations */	126	/* Conversion routines between different color representations */
127	static void rgb_4byte(void *dst, int rgb)	127	static void rgb_4byte(void *dst, int rgb)
128	{	128	{
129	(int )dst = rgb;	129	(int )dst = rgb;
130	}	130	}
131		131
132	static int byte4_rgb(void *src)	132	static int byte4_rgb(void *src)
133	{	133	{
134	return ((int )src) & 0xffffff;	134	return ((int )src) & 0xffffff;
135	}	135	}
136		136
137	static void rgb_3byte(void *dst, int rgb)	137	static void rgb_3byte(void *dst, int rgb)
138	{	138	{
139	__u8 *scr = dst;	139	__u8 *scr = dst;
140	#if (defined(BIG_ENDIAN) \|\| defined(FB_BIG_ENDIAN))	140	#if (defined(BIG_ENDIAN) \|\| defined(FB_BIG_ENDIAN))
141	scr[0] = RED(rgb, 8);	141	scr[0] = RED(rgb, 8);
142	scr[1] = GREEN(rgb, 8);	142	scr[1] = GREEN(rgb, 8);
143	scr[2] = BLUE(rgb, 8);	143	scr[2] = BLUE(rgb, 8);
144	#else	144	#else
145	scr[2] = RED(rgb, 8);	145	scr[2] = RED(rgb, 8);
146	scr[1] = GREEN(rgb, 8);	146	scr[1] = GREEN(rgb, 8);
147	scr[0] = BLUE(rgb, 8);	147	scr[0] = BLUE(rgb, 8);
148	#endif	148	#endif
149		149
150		150
151	}	151	}
152		152
153	static int byte3_rgb(void *src)	153	static int byte3_rgb(void *src)
154	{	154	{
155	__u8 *scr = src;	155	__u8 *scr = src;
156	#if (defined(BIG_ENDIAN) \|\| defined(FB_BIG_ENDIAN))	156	#if (defined(BIG_ENDIAN) \|\| defined(FB_BIG_ENDIAN))
157	return scr[0] << 16 \| scr[1] << 8 \| scr[2];	157	return scr[0] << 16 \| scr[1] << 8 \| scr[2];
158	#else	158	#else
159	return scr[2] << 16 \| scr[1] << 8 \| scr[0];	159	return scr[2] << 16 \| scr[1] << 8 \| scr[0];
160	#endif	160	#endif
161	}	161	}
162		162
163	/** 16-bit depth (5:6:5) */	163	/** 16-bit depth (5:6:5) */
164	static void rgb_2byte(void *dst, int rgb)	164	static void rgb_2byte(void *dst, int rgb)
165	{	165	{
166	/* 5-bit, 6-bits, 5-bits */	166	/* 5-bit, 6-bits, 5-bits */
167	((__u16 )(dst)) = RED(rgb, 5) << 11 \| GREEN(rgb, 6) << 5 \| BLUE(rgb, 5);	167	((__u16 )(dst)) = RED(rgb, 5) << 11 \| GREEN(rgb, 6) << 5 \| BLUE(rgb, 5);
168	}	168	}
169		169
170	/** 16-bit depth (5:6:5) */	170	/** 16-bit depth (5:6:5) */
171	static int byte2_rgb(void *src)	171	static int byte2_rgb(void *src)
172	{	172	{
173	int color = (__u16 )(src);	173	int color = (__u16 )(src);
174	return (((color >> 11) & 0x1f) << (16 + 3)) \| (((color >> 5) & 0x3f) << (8 + 2)) \| ((color & 0x1f) << 3);	174	return (((color >> 11) & 0x1f) << (16 + 3)) \| (((color >> 5) & 0x3f) << (8 + 2)) \| ((color & 0x1f) << 3);
175	}	175	}
176		176
177	/** Put pixel - 8-bit depth (3:2:3) */	177	/** Put pixel - 8-bit depth (3:2:3) */
178	static void rgb_1byte(void *dst, int rgb)	178	static void rgb_1byte(void *dst, int rgb)
179	{	179	{
180	(__u8 )dst = RED(rgb, 3) << 5 \| GREEN(rgb, 2) << 3 \| BLUE(rgb, 3);	180	(__u8 )dst = RED(rgb, 3) << 5 \| GREEN(rgb, 2) << 3 \| BLUE(rgb, 3);
181	}	181	}
182		182
183	/** Return pixel color - 8-bit depth (3:2:3) */	183	/** Return pixel color - 8-bit depth (3:2:3) */
184	static int byte1_rgb(void *src)	184	static int byte1_rgb(void *src)
185	{	185	{
186	int color = (__u8 )src;	186	int color = (__u8 )src;
187	return (((color >> 5) & 0x7) << (16 + 5)) \| (((color >> 3) & 0x3) << (8 + 6)) \| ((color & 0x7) << 5);	187	return (((color >> 5) & 0x7) << (16 + 5)) \| (((color >> 3) & 0x3) << (8 + 6)) \| ((color & 0x7) << 5);
188	}	188	}
189		189
190	/** Put pixel into viewport	190	/** Put pixel into viewport
191	*	191	*
192	* @param vp Viewport identification	192	* @param vp Viewport identification
193	* @param x X coord relative to viewport	193	* @param x X coord relative to viewport
194	* @param y Y coord relative to viewport	194	* @param y Y coord relative to viewport
195	* @param color RGB color	195	* @param color RGB color
196	*/	196	*/
197	static void putpixel(int vp, unsigned int x, unsigned int y, int color)	197	static void putpixel(int vp, unsigned int x, unsigned int y, int color)
198	{	198	{
199	int dx = viewports[vp].x + x;	199	int dx = viewports[vp].x + x;
200	int dy = viewports[vp].y + y;	200	int dy = viewports[vp].y + y;
201	(*screen.rgb2scr)(&screen.fbaddress[POINTPOS(dx,dy)],color);	201	(*screen.rgb2scr)(&screen.fbaddress[POINTPOS(dx,dy)],color);
202	}	202	}
203	/** Get pixel from viewport */	203	/** Get pixel from viewport */
204	static int getpixel(int vp, unsigned int x, unsigned int y)	204	static int getpixel(int vp, unsigned int x, unsigned int y)
205	{	205	{
206	int dx = viewports[vp].x + x;	206	int dx = viewports[vp].x + x;
207	int dy = viewports[vp].y + y;	207	int dy = viewports[vp].y + y;
208		208
209	return (*screen.scr2rgb)(&screen.fbaddress[POINTPOS(dx,dy)]);	209	return (*screen.scr2rgb)(&screen.fbaddress[POINTPOS(dx,dy)]);
210	}	210	}
211		211
212	/** Fill line with color BGCOLOR */	212	/** Fill line with color BGCOLOR */
213	static void clear_line(int vp, unsigned int y)	213	static void clear_line(int vp, unsigned int y)
214	{	214	{
215	unsigned int x;	215	unsigned int x;
216	for (x = 0; x < viewports[vp].width; x++)	216	for (x = 0; x < viewports[vp].width; x++)
217	putpixel(vp, x, y, viewports[vp].style.bg_color);	217	putpixel(vp, x, y, viewports[vp].style.bg_color);
218	}	218	}
219		219
220	static void draw_rectangle(int vp, unsigned int sx, unsigned int sy,	220	static void draw_rectangle(int vp, unsigned int sx, unsigned int sy,
221	unsigned int width, unsigned int height,	221	unsigned int width, unsigned int height,
222	int color)	222	int color)
223	{	223	{
224	unsigned int x, y;	224	unsigned int x, y;
225		225
226	/* Clear first line */	226	/* Clear first line */
227	for (x = 0; x < width; x++)	227	for (x = 0; x < width; x++)
228	putpixel(vp, sx + x, sy, color);	228	putpixel(vp, sx + x, sy, color);
229		229
230	/* Recompute to screen coords */	230	/* Recompute to screen coords */
231	sx += viewports[vp].x;	231	sx += viewports[vp].x;
232	sy += viewports[vp].y;	232	sy += viewports[vp].y;
233	/* Copy the rest */	233	/* Copy the rest */
234	for (y = sy+1;y < sy+height; y++)	234	for (y = sy+1;y < sy+height; y++)
235	memcpy(&screen.fbaddress[POINTPOS(sx,y)],	235	memcpy(&screen.fbaddress[POINTPOS(sx,y)],
236	&screen.fbaddress[POINTPOS(sx,sy)],	236	&screen.fbaddress[POINTPOS(sx,sy)],
237	screen.pixelbytes * width);	237	screen.pixelbytes * width);
238		238
239	}	239	}
240		240
241	/** Fill viewport with background color */	241	/** Fill viewport with background color */
242	static void clear_port(int vp)	242	static void clear_port(int vp)
243	{	243	{
244	viewport_t *vport = &viewports[vp];	244	viewport_t *vport = &viewports[vp];
245		245
246	draw_rectangle(vp, 0, 0, vport->width, vport->height, vport->style.bg_color);	246	draw_rectangle(vp, 0, 0, vport->width, vport->height, vport->style.bg_color);
247	}	247	}
248		248
249	/** Scroll port up/down	249	/** Scroll port up/down
250	*	250	*
251	* @param vp Viewport to scroll	251	* @param vp Viewport to scroll
252	* @param rows Positive number - scroll up, negative - scroll down	252	* @param rows Positive number - scroll up, negative - scroll down
253	*/	253	*/
254	static void scroll_port(int vp, int rows)	254	static void scroll_port(int vp, int rows)
255	{	255	{
256	int y;	256	int y;
257	int startline;	257	int startline;
258	int endline;	258	int endline;
259	viewport_t *vport = &viewports[vp];	259	viewport_t *vport = &viewports[vp];
260		260
261	if (rows > 0) {	261	if (rows > 0) {
262	for (y=vport->y; y < vport->y+vport->height - rows*FONT_SCANLINES; y++)	262	for (y=vport->y; y < vport->y+vport->height - rows*FONT_SCANLINES; y++)
263	memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],	263	memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],
264	&screen.fbaddress[POINTPOS(vport->x,y + rows*FONT_SCANLINES)],	264	&screen.fbaddress[POINTPOS(vport->x,y + rows*FONT_SCANLINES)],
265	screen.pixelbytes * vport->width);	265	screen.pixelbytes * vport->width);
266	draw_rectangle(vp, 0, FONT_SCANLINES*(vport->rows - 1),	266	draw_rectangle(vp, 0, FONT_SCANLINES*(vport->rows - 1),
267	vport->width, FONT_SCANLINES, vport->style.bg_color);	267	vport->width, FONT_SCANLINES, vport->style.bg_color);
268	} else if (rows < 0) {	268	} else if (rows < 0) {
269	rows = -rows;	269	rows = -rows;
270	for (y=vport->y + vport->height-1; y >= vport->y + rows*FONT_SCANLINES; y--)	270	for (y=vport->y + vport->height-1; y >= vport->y + rows*FONT_SCANLINES; y--)
271	memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],	271	memcpy(&screen.fbaddress[POINTPOS(vport->x,y)],
272	&screen.fbaddress[POINTPOS(vport->x,y - rows*FONT_SCANLINES)],	272	&screen.fbaddress[POINTPOS(vport->x,y - rows*FONT_SCANLINES)],
273	screen.pixelbytes * vport->width);	273	screen.pixelbytes * vport->width);
274	draw_rectangle(vp, 0, 0, vport->width, FONT_SCANLINES, vport->style.bg_color);	274	draw_rectangle(vp, 0, 0, vport->width, FONT_SCANLINES, vport->style.bg_color);
275	}	275	}
276	}	276	}
277		277
278	static void invert_pixel(int vp,unsigned int x, unsigned int y)	278	static void invert_pixel(int vp,unsigned int x, unsigned int y)
279	{	279	{
280	putpixel(vp, x, y, ~getpixel(vp, x, y));	280	putpixel(vp, x, y, ~getpixel(vp, x, y));
281	}	281	}
282		282
283		283
284	/***************************************************************/	284	/***************************************************************/
285	/* Character-console functions */	285	/* Character-console functions */
286		286
287	/** Draw character at given position	287	/** Draw character at given position
288	*	288	*
289	* @param vp Viewport where the character is printed	289	* @param vp Viewport where the character is printed
290	* @param sx Coordinates of top-left of the character	290	* @param sx Coordinates of top-left of the character
291	* @param sy Coordinates of top-left of the character	291	* @param sy Coordinates of top-left of the character
292	* @param style Color of the character	292	* @param style Color of the character
293	* @param transparent If false, print background color	293	* @param transparent If false, print background color
294	*/	294	*/
295	static void draw_glyph(int vp,__u8 glyph, unsigned int sx, unsigned int sy,	295	static void draw_glyph(int vp,__u8 glyph, unsigned int sx, unsigned int sy,
296	style_t style, int transparent)	296	style_t style, int transparent)
297	{	297	{
298	int i;	298	int i;
299	unsigned int y;	299	unsigned int y;
300	unsigned int glline;	300	unsigned int glline;
301		301
302	for (y = 0; y < FONT_SCANLINES; y++) {	302	for (y = 0; y < FONT_SCANLINES; y++) {
303	glline = fb_font[glyph * FONT_SCANLINES + y];	303	glline = fb_font[glyph * FONT_SCANLINES + y];
304	for (i = 0; i < 8; i++) {	304	for (i = 0; i < 8; i++) {
305	if (glline & (1 << (7 - i)))	305	if (glline & (1 << (7 - i)))
306	putpixel(vp, sx + i, sy + y, style.fg_color);	306	putpixel(vp, sx + i, sy + y, style.fg_color);
307	else if (!transparent)	307	else if (!transparent)
308	putpixel(vp, sx + i, sy + y, style.bg_color);	308	putpixel(vp, sx + i, sy + y, style.bg_color);
309	}	309	}
310	}	310	}
311	}	311	}
312		312
313	/** Invert character at given position */	313	/** Invert character at given position */
314	static void invert_char(int vp,unsigned int row, unsigned int col)	314	static void invert_char(int vp,unsigned int row, unsigned int col)
315	{	315	{
316	unsigned int x;	316	unsigned int x;
317	unsigned int y;	317	unsigned int y;
318		318
319	for (x = 0; x < COL_WIDTH; x++)	319	for (x = 0; x < COL_WIDTH; x++)
320	for (y = 0; y < FONT_SCANLINES; y++)	320	for (y = 0; y < FONT_SCANLINES; y++)
321	invert_pixel(vp, col * COL_WIDTH + x, row * FONT_SCANLINES + y);	321	invert_pixel(vp, col * COL_WIDTH + x, row * FONT_SCANLINES + y);
322	}	322	}
323		323
324	/***************************************************************/	324	/***************************************************************/
325	/* Stdout specific functions */	325	/* Stdout specific functions */
326		326
327		327
328	/** Create new viewport	328	/** Create new viewport
329	*	329	*
330	* @return New viewport number	330	* @return New viewport number
331	*/	331	*/
332	static int viewport_create(unsigned int x, unsigned int y,unsigned int width,	332	static int viewport_create(unsigned int x, unsigned int y,unsigned int width,
333	unsigned int height)	333	unsigned int height)
334	{	334	{
335	int i;	335	int i;
336		336
337	for (i=0; i < MAX_VIEWPORTS; i++) {	337	for (i=0; i < MAX_VIEWPORTS; i++) {
338	if (!viewports[i].initialized)	338	if (!viewports[i].initialized)
339	break;	339	break;
340	}	340	}
341	if (i == MAX_VIEWPORTS)	341	if (i == MAX_VIEWPORTS)
342	return ELIMIT;	342	return ELIMIT;
343		343
344	if (width ==0 \|\| height == 0 \|\|	344	if (width ==0 \|\| height == 0 \|\|
345	x+width > screen.xres \|\| y+height > screen.yres)	345	x+width > screen.xres \|\| y+height > screen.yres)
346	return EINVAL;	346	return EINVAL;
347	if (width < FONT_SCANLINES \|\| height < COL_WIDTH)	347	if (width < FONT_SCANLINES \|\| height < COL_WIDTH)
348	return EINVAL;	348	return EINVAL;
349		349
350	viewports[i].x = x;	350	viewports[i].x = x;
351	viewports[i].y = y;	351	viewports[i].y = y;
352	viewports[i].width = width;	352	viewports[i].width = width;
353	viewports[i].height = height;	353	viewports[i].height = height;
354		354
355	viewports[i].rows = height / FONT_SCANLINES;	355	viewports[i].rows = height / FONT_SCANLINES;
356	viewports[i].cols = width / COL_WIDTH;	356	viewports[i].cols = width / COL_WIDTH;
357		357
358	viewports[i].style.bg_color = DEFAULT_BGCOLOR;	358	viewports[i].style.bg_color = DEFAULT_BGCOLOR;
359	viewports[i].style.fg_color = DEFAULT_FGCOLOR;	359	viewports[i].style.fg_color = DEFAULT_FGCOLOR;
360		360
361	viewports[i].cur_col = 0;	361	viewports[i].cur_col = 0;
362	viewports[i].cur_row = 0;	362	viewports[i].cur_row = 0;
363	viewports[i].cursor_active = 0;	363	viewports[i].cursor_active = 0;
364		364
365	viewports[i].initialized = 1;	365	viewports[i].initialized = 1;
366		366
367	return i;	367	return i;
368	}	368	}
369		369
370		370
371	/** Initialize framebuffer as a chardev output device	371	/** Initialize framebuffer as a chardev output device
372	*	372	*
373	* @param addr Address of theframebuffer	373	* @param addr Address of theframebuffer
374	* @param x Screen width in pixels	374	* @param x Screen width in pixels
375	* @param y Screen height in pixels	375	* @param y Screen height in pixels
376	* @param bpp Bits per pixel (8, 16, 24, 32)	376	* @param bpp Bits per pixel (8, 16, 24, 32)
377	* @param scan Bytes per one scanline	377	* @param scan Bytes per one scanline
378	*	378	*
379	*/	379	*/
380	static void screen_init(void *addr, unsigned int xres, unsigned int yres, unsigned int bpp, unsigned int scan)	380	static void screen_init(void *addr, unsigned int xres, unsigned int yres, unsigned int bpp, unsigned int scan)
381	{	381	{
382	switch (bpp) {	382	switch (bpp) {
383	case 8:	383	case 8:
384	screen.rgb2scr = rgb_1byte;	384	screen.rgb2scr = rgb_1byte;
385	screen.scr2rgb = byte1_rgb;	385	screen.scr2rgb = byte1_rgb;
386	screen.pixelbytes = 1;	386	screen.pixelbytes = 1;
387	break;	387	break;
388	case 16:	388	case 16:
389	screen.rgb2scr = rgb_2byte;	389	screen.rgb2scr = rgb_2byte;
390	screen.scr2rgb = byte2_rgb;	390	screen.scr2rgb = byte2_rgb;
391	screen.pixelbytes = 2;	391	screen.pixelbytes = 2;
392	break;	392	break;
393	case 24:	393	case 24:
394	screen.rgb2scr = rgb_3byte;	394	screen.rgb2scr = rgb_3byte;
395	screen.scr2rgb = byte3_rgb;	395	screen.scr2rgb = byte3_rgb;
396	screen.pixelbytes = 3;	396	screen.pixelbytes = 3;
397	break;	397	break;
398	case 32:	398	case 32:
399	screen.rgb2scr = rgb_4byte;	399	screen.rgb2scr = rgb_4byte;
400	screen.scr2rgb = byte4_rgb;	400	screen.scr2rgb = byte4_rgb;
401	screen.pixelbytes = 4;	401	screen.pixelbytes = 4;
402	break;	402	break;
403	}	403	}
404		404
405		405
406	screen.fbaddress = (unsigned char *) addr;	406	screen.fbaddress = (unsigned char *) addr;
407	screen.xres = xres;	407	screen.xres = xres;
408	screen.yres = yres;	408	screen.yres = yres;
409	screen.scanline = scan;	409	screen.scanline = scan;
410		410
411	/* Create first viewport */	411	/* Create first viewport */
412	viewport_create(0,0,xres,yres);	412	viewport_create(0,0,xres,yres);
413	}	413	}
414		414
415	/** Hide cursor if it is shown */	415	/** Hide cursor if it is shown */
416	static void cursor_hide(int vp)	416	static void cursor_hide(int vp)
417	{	417	{
418	viewport_t *vport = &viewports[vp];	418	viewport_t *vport = &viewports[vp];
419		419
420	if (vport->cursor_active && vport->cursor_shown) {	420	if (vport->cursor_active && vport->cursor_shown) {
421	invert_char(vp, vport->cur_row, vport->cur_col);	421	invert_char(vp, vport->cur_row, vport->cur_col);
422	vport->cursor_shown = 0;	422	vport->cursor_shown = 0;
423	}	423	}
424	}	424	}
425		425
426	/** Show cursor if cursor showing is enabled */	426	/** Show cursor if cursor showing is enabled */
427	static void cursor_print(int vp)	427	static void cursor_print(int vp)
428	{	428	{
429	viewport_t *vport = &viewports[vp];	429	viewport_t *vport = &viewports[vp];
430		430
431	/* Do not check for cursor_shown */	431	/* Do not check for cursor_shown */
432	if (vport->cursor_active) {	432	if (vport->cursor_active) {
433	invert_char(vp, vport->cur_row, vport->cur_col);	433	invert_char(vp, vport->cur_row, vport->cur_col);
434	vport->cursor_shown = 1;	434	vport->cursor_shown = 1;
435	}	435	}
436	}	436	}
437		437
438	/** Invert cursor, if it is enabled */	438	/** Invert cursor, if it is enabled */
439	static void cursor_blink(int vp)	439	static void cursor_blink(int vp)
440	{	440	{
441	viewport_t *vport = &viewports[vp];	441	viewport_t *vport = &viewports[vp];
442		442
443	if (vport->cursor_shown)	443	if (vport->cursor_shown)
444	cursor_hide(vp);	444	cursor_hide(vp);
445	else	445	else
446	cursor_print(vp);	446	cursor_print(vp);
447	}	447	}
448		448
449	/** Draw character at given position relative to viewport	449	/** Draw character at given position relative to viewport
450	*	450	*
451	* @param vp Viewport identification	451	* @param vp Viewport identification
452	* @param c Character to print	452	* @param c Character to print
453	* @param row Screen position relative to viewport	453	* @param row Screen position relative to viewport
454	* @param col Screen position relative to viewport	454	* @param col Screen position relative to viewport
455	* @param transparent If false, print background color with character	455	* @param transparent If false, print background color with character
456	*/	456	*/
457	static void draw_char(int vp, char c, unsigned int row, unsigned int col, style_t style, int transparent)	457	static void draw_char(int vp, char c, unsigned int row, unsigned int col, style_t style, int transparent)
458	{	458	{
459	viewport_t *vport = &viewports[vp];	459	viewport_t *vport = &viewports[vp];
460		460
461	/* Optimize - do not hide cursor if we are going to overwrite it */	461	/* Optimize - do not hide cursor if we are going to overwrite it */
462	if (vport->cursor_active && vport->cursor_shown &&	462	if (vport->cursor_active && vport->cursor_shown &&
463	(vport->cur_col != col \|\| vport->cur_row != row))	463	(vport->cur_col != col \|\| vport->cur_row != row))
464	invert_char(vp, vport->cur_row, vport->cur_col);	464	invert_char(vp, vport->cur_row, vport->cur_col);
465		465
466	draw_glyph(vp, c, col * COL_WIDTH, row * FONT_SCANLINES, style, transparent);	466	draw_glyph(vp, c, col * COL_WIDTH, row * FONT_SCANLINES, style, transparent);
467		467
468	vport->cur_col = col;	468	vport->cur_col = col;
469	vport->cur_row = row;	469	vport->cur_row = row;
470		470
471	vport->cur_col++;	471	vport->cur_col++;
472	if (vport->cur_col>= vport->cols) {	472	if (vport->cur_col>= vport->cols) {
473	vport->cur_col = 0;	473	vport->cur_col = 0;
474	vport->cur_row++;	474	vport->cur_row++;
475	if (vport->cur_row >= vport->rows)	475	if (vport->cur_row >= vport->rows)
476	vport->cur_row--;	476	vport->cur_row--;
477	}	477	}
478	cursor_print(vp);	478	cursor_print(vp);
479	}	479	}
480		480
481	/** Draw text data to viewport	481	/** Draw text data to viewport
482	*	482	*
483	* @param vp Viewport id	483	* @param vp Viewport id
484	* @param data Text data fitting exactly into viewport	484	* @param data Text data fitting exactly into viewport
485	*/	485	*/
486	static void draw_text_data(int vp, keyfield_t *data)	486	static void draw_text_data(int vp, keyfield_t *data)
487	{	487	{
488	viewport_t *vport = &viewports[vp];	488	viewport_t *vport = &viewports[vp];
489	int i;	489	int i;
490	char c;	490	char c;
491	int col,row;	491	int col,row;
492		492
493	clear_port(vp);	493	clear_port(vp);
494	for (i=0; i < vport->cols * vport->rows; i++) {	494	for (i=0; i < vport->cols * vport->rows; i++) {
495	if (data[i].character == ' ' && style_same(data[i].style,vport->style))	495	if (data[i].character == ' ' && style_same(data[i].style,vport->style))
496	continue;	496	continue;
497	col = i % vport->cols;	497	col = i % vport->cols;
498	row = i / vport->cols;	498	row = i / vport->cols;
499	draw_glyph(vp, data[i].character, col * COL_WIDTH, row * FONT_SCANLINES,	499	draw_glyph(vp, data[i].character, col * COL_WIDTH, row * FONT_SCANLINES,
500	data[i].style, style_same(data[i].style,vport->style));	500	data[i].style, style_same(data[i].style,vport->style));

Subversion Repositories HelenOS-historic

(root)/uspace/trunk/fb/fb.c – Rev 1646 → 1648