WebSVN – HelenOS-historic – Diff – /kernel/trunk/genarch/src/fb/fb.c


/*
 * 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 <genarch/fb/font-8x16.h>
#include <genarch/fb/fb.h>
#include <console/chardev.h>
#include <console/console.h>
#include <panic.h>
#include <memstr.h>
 
#include "helenos.xbm"
 
SPINLOCK_INITIALIZE(fb_lock);
 
static __u8 *fbaddress = NULL;
 
static unsigned int xres = 0;
static unsigned int yres = 0;
static unsigned int scanline = 0;
static unsigned int pixelbytes = 0;
 
static unsigned int position = 0;
static unsigned int columns = 0;
static unsigned int rows = 0;
 
 
#define COL_WIDTH   8
#define ROW_BYTES   (scanline * FONT_SCANLINES)
 
#define BGCOLOR     0x000080
#define FGCOLOR     0xffff00
#define LOGOCOLOR   0x2020b0
 
#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 POINTPOS(x, y)  (y * scanline + x * pixelbytes)
 
/***************************************************************/
/* Pixel specific fuctions */
 
static void (*putpixel)(unsigned int x, unsigned int y, int color);
static int (*getpixel)(unsigned int x, unsigned int y);
 
/** Put pixel - 24-bit depth, 1 free byte */
static void putpixel_4byte(unsigned int x, unsigned int y, int color)
{
    *((__u32 *)(fbaddress + POINTPOS(x, y))) = color;
}
 
/** Return pixel color - 24-bit depth, 1 free byte */
static int getpixel_4byte(unsigned int x, unsigned int y)
{
    return *((__u32 *)(fbaddress + POINTPOS(x, y))) & 0xffffff;
}
 
/** Put pixel - 24-bit depth */
static void putpixel_3byte(unsigned int x, unsigned int y, int color)
{
    unsigned int startbyte = POINTPOS(x, y);
 
#ifdef BIG_ENDIAN
    fbaddress[startbyte] = RED(color, 8);
    fbaddress[startbyte + 1] = GREEN(color, 8);
    fbaddress[startbyte + 2] = BLUE(color, 8);
#else
    fbaddress[startbyte + 2] = RED(color, 8);
    fbaddress[startbyte + 1] = GREEN(color, 8);
    fbaddress[startbyte + 0] = BLUE(color, 8);
#endif  
}
 
/** Return pixel color - 24-bit depth */
static int getpixel_3byte(unsigned int x, unsigned int y)
{
    unsigned int startbyte = POINTPOS(x, y);
 
#ifdef BIG_ENDIAN
    return fbaddress[startbyte] << 16 | fbaddress[startbyte + 1] << 8 | fbaddress[startbyte + 2];
#else
    return fbaddress[startbyte + 2] << 16 | fbaddress[startbyte + 1] << 8 | fbaddress[startbyte + 0];
#endif  
}
 
/** Put pixel - 16-bit depth (5:6:6) */
static void putpixel_2byte(unsigned int x, unsigned int y, int color)
{
    /* 5-bit, 5-bits, 5-bits */
    *((__u16 *)(fbaddress + POINTPOS(x, y))) = RED(color, 5) << 11 | GREEN(color, 6) << 5 | BLUE(color, 5);
}
 
/** Return pixel color - 16-bit depth (5:6:6) */
static int getpixel_2byte(unsigned int x, unsigned int y)
{
    int color = *((__u16 *)(fbaddress + POINTPOS(x, y)));
    return (((color >> 11) & 0x1f) << (16 + 3)) | (((color >> 5) & 0x3f) << (8 + 2)) | ((color & 0x1f) << 3);
}
 
/** Put pixel - 8-bit depth (3:2:3) */
static void putpixel_1byte(unsigned int x, unsigned int y, int color)
{
    fbaddress[POINTPOS(x, y)] = RED(color, 3) << 5 | GREEN(color, 2) << 3 | BLUE(color, 3);
}
 
/** Return pixel color - 8-bit depth (3:2:3) */
static int getpixel_1byte(unsigned int x, unsigned int y)
{
    int color = fbaddress[POINTPOS(x, y)];
    return (((color >> 5) & 0x7) << (16 + 5)) | (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
}
 
/** Fill line with color BGCOLOR */
static void clear_line(unsigned int y)
{
    unsigned int x;
   
    for (x = 0; x < xres; x++)
        (*putpixel)(x, y, BGCOLOR);
}
 
 
/** Fill screen with background color */
static void clear_screen(void)
{
    unsigned int y;
 
    for (y = 0; y < yres; y++)
        clear_line(y);
}
 
 
/** Scroll screen one row up */
static void scroll_screen(void)
{
    unsigned int i;
 
    memcpy((void *) fbaddress, (void *) &fbaddress[ROW_BYTES], scanline * yres - ROW_BYTES);
 
    /* Clear last row */
    for (i = 0; i < FONT_SCANLINES; i++)
        clear_line((rows - 1) * FONT_SCANLINES + i);
}
 
 
static void invert_pixel(unsigned int x, unsigned int y)
{
    (*putpixel)(x, y, ~(*getpixel)(x, y));
}
 
 
/** Draw one line of glyph at a given position */
static void draw_glyph_line(unsigned int glline, unsigned int x, unsigned int y)
{
    unsigned int i;
 
    for (i = 0; i < 8; i++)
        if (glline & (1 << (7 - i))) {
            (*putpixel)(x + i, y, FGCOLOR);
        } else
            (*putpixel)(x + i, y, BGCOLOR);
}
 
/***************************************************************/
/* Character-console functions */
 
/** Draw character at given position */
static void draw_glyph(__u8 glyph, unsigned int col, unsigned int row)
{
    unsigned int y;
 
    for (y = 0; y < FONT_SCANLINES; y++)
        draw_glyph_line(fb_font[glyph * FONT_SCANLINES + y], col * COL_WIDTH, row * FONT_SCANLINES + y);
}
 
/** Invert character at given position */
static void invert_char(unsigned int col, unsigned int row)
{
    unsigned int x;
    unsigned int y;
 
    for (x = 0; x < COL_WIDTH; x++)
        for (y = 0; y < FONT_SCANLINES; y++)
            invert_pixel(col * COL_WIDTH + x, row * FONT_SCANLINES + y);
}
 
/** Draw character at default position */
static void draw_char(char chr)
{
    draw_glyph(chr, position % columns, position / columns);
}
 
static void draw_logo(unsigned int startx, unsigned int starty)
{
    unsigned int x;
    unsigned int y;
    unsigned int byte;
    unsigned int rowbytes;
 
    rowbytes = (helenos_width - 1) / 8 + 1;
 
    for (y = 0; y < helenos_height; y++)
        for (x = 0; x < helenos_width; x++) {
            byte = helenos_bits[rowbytes * y + x / 8];
            byte >>= x % 8;
            if (byte & 1)
                (*putpixel)(startx + x, starty + y, LOGOCOLOR);
        }
}
 
/***************************************************************/
/* Stdout specific functions */
 
static void invert_cursor(void)
{
    invert_char(position % columns, position / columns);
}
 
/** Print character to screen
 *
 *  Emulate basic terminal commands
 */
static void fb_putchar(chardev_t *dev, char ch)
{
    spinlock_lock(&fb_lock);
   
    switch (ch) {
        case '\n':
            invert_cursor();
            position += columns;
            position -= position % columns;
            break;
        case '\r':
            invert_cursor();
            position -= position % columns;
            break;
        case '\b':
            invert_cursor();
            if (position % columns)
                position--;
            break;
        case '\t':
            invert_cursor();
            do {
                draw_char(' ');
                position++;
            } while ((position % 8) && position < columns * rows);
            break;
        default:
            draw_char(ch);
            position++;
    }
   
    if (position >= columns * rows) {
        position -= columns;
        scroll_screen();
    }
   
    invert_cursor();
   
    spinlock_unlock(&fb_lock);
}
 
static chardev_t framebuffer;
static chardev_operations_t fb_ops = {
    .write = fb_putchar,
};
 
 
/** 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
 *
 */
void fb_init(__address addr, unsigned int x, unsigned int y, unsigned int bpp, unsigned int scan)
{
    switch (bpp) {
        case 8:
            putpixel = putpixel_1byte;
            getpixel = getpixel_1byte;
            pixelbytes = 1;
            break;
        case 16:
            putpixel = putpixel_2byte;
            getpixel = getpixel_2byte;
            pixelbytes = 2;
            break;
        case 24:
            putpixel = putpixel_3byte;
            getpixel = getpixel_3byte;
            pixelbytes = 3;
            break;
        case 32:
            putpixel = putpixel_4byte;
            getpixel = getpixel_4byte;
            pixelbytes = 4;
            break;
        default:
            panic("Unsupported bpp");
    }
       
    fbaddress = (unsigned char *) addr;
    xres = x;
    yres = y;
    scanline = scan;
   
    rows = y / FONT_SCANLINES;
    columns = x / COL_WIDTH;
 
    clear_screen();
    draw_logo(xres - helenos_width, 0);
    invert_cursor();
 
    chardev_initialize("fb", &framebuffer, &fb_ops);
    stdout = &framebuffer;
}
 

Rev 1298	Rev 1312
1	/*	1	/*
2	* Copyright (C) 2006 Ondrej Palkovsky	2	* Copyright (C) 2006 Ondrej Palkovsky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <genarch/fb/font-8x16.h>	29	#include <genarch/fb/font-8x16.h>
30	#include <genarch/fb/fb.h>	30	#include <genarch/fb/fb.h>
31	#include <console/chardev.h>	31	#include <console/chardev.h>
32	#include <console/console.h>	32	#include <console/console.h>
33	#include <panic.h>	33	#include <panic.h>
34	#include <memstr.h>	34	#include <memstr.h>
35		35
36	#include "helenos.xbm"	36	#include "helenos.xbm"
37		37
38	SPINLOCK_INITIALIZE(fb_lock);	38	SPINLOCK_INITIALIZE(fb_lock);
39		39
40	static __u8 *fbaddress = NULL;	40	static __u8 *fbaddress = NULL;
41		41
42	static unsigned int xres = 0;	42	static unsigned int xres = 0;
43	static unsigned int yres = 0;	43	static unsigned int yres = 0;
44	static unsigned int scanline = 0;	44	static unsigned int scanline = 0;
45	static unsigned int pixelbytes = 0;	45	static unsigned int pixelbytes = 0;
46		46
47	static unsigned int position = 0;	47	static unsigned int position = 0;
48	static unsigned int columns = 0;	48	static unsigned int columns = 0;
49	static unsigned int rows = 0;	49	static unsigned int rows = 0;
50		50
51		51
52	#define COL_WIDTH 8	52	#define COL_WIDTH 8
53	#define ROW_BYTES (scanline * FONT_SCANLINES)	53	#define ROW_BYTES (scanline * FONT_SCANLINES)
54		54
55	#define BGCOLOR 0x000080	55	#define BGCOLOR 0x000080
56	#define FGCOLOR 0xffff00	56	#define FGCOLOR 0xffff00
57	#define LOGOCOLOR 0x2020b0	57	#define LOGOCOLOR 0x2020b0
58		58
59	#define RED(x, bits) ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))	59	#define RED(x, bits) ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))
60	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))	60	#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
61	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))	61	#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
62		62
63	#define POINTPOS(x, y) (y * scanline + x * pixelbytes)	63	#define POINTPOS(x, y) (y * scanline + x * pixelbytes)
64		64
65	/***************************************************************/	65	/***************************************************************/
66	/* Pixel specific fuctions */	66	/* Pixel specific fuctions */
67		67
68	static void (*putpixel)(unsigned int x, unsigned int y, int color);	68	static void (*putpixel)(unsigned int x, unsigned int y, int color);
69	static int (*getpixel)(unsigned int x, unsigned int y);	69	static int (*getpixel)(unsigned int x, unsigned int y);
70		70
71	/** Put pixel - 24-bit depth, 1 free byte */	71	/** Put pixel - 24-bit depth, 1 free byte */
72	static void putpixel_4byte(unsigned int x, unsigned int y, int color)	72	static void putpixel_4byte(unsigned int x, unsigned int y, int color)
73	{	73	{
74	((__u32 )(fbaddress + POINTPOS(x, y))) = color;	74	((__u32 )(fbaddress + POINTPOS(x, y))) = color;
75	}	75	}
76		76
77	/** Return pixel color - 24-bit depth, 1 free byte */	77	/** Return pixel color - 24-bit depth, 1 free byte */
78	static int getpixel_4byte(unsigned int x, unsigned int y)	78	static int getpixel_4byte(unsigned int x, unsigned int y)
79	{	79	{
80	return ((__u32 )(fbaddress + POINTPOS(x, y))) & 0xffffff;	80	return ((__u32 )(fbaddress + POINTPOS(x, y))) & 0xffffff;
81	}	81	}
82		82
83	/** Put pixel - 24-bit depth */	83	/** Put pixel - 24-bit depth */
84	static void putpixel_3byte(unsigned int x, unsigned int y, int color)	84	static void putpixel_3byte(unsigned int x, unsigned int y, int color)
85	{	85	{
86	unsigned int startbyte = POINTPOS(x, y);	86	unsigned int startbyte = POINTPOS(x, y);
87		87
88	#ifdef BIG_ENDIAN	88	#ifdef BIG_ENDIAN
89	fbaddress[startbyte] = RED(color, 8);	89	fbaddress[startbyte] = RED(color, 8);
90	fbaddress[startbyte + 1] = GREEN(color, 8);	90	fbaddress[startbyte + 1] = GREEN(color, 8);
91	fbaddress[startbyte + 2] = BLUE(color, 8);	91	fbaddress[startbyte + 2] = BLUE(color, 8);
92	#else	92	#else
93	fbaddress[startbyte + 2] = RED(color, 8);	93	fbaddress[startbyte + 2] = RED(color, 8);
94	fbaddress[startbyte + 1] = GREEN(color, 8);	94	fbaddress[startbyte + 1] = GREEN(color, 8);
95	fbaddress[startbyte + 0] = BLUE(color, 8);	95	fbaddress[startbyte + 0] = BLUE(color, 8);
96	#endif	96	#endif
97	}	97	}
98		98
99	/** Return pixel color - 24-bit depth */	99	/** Return pixel color - 24-bit depth */
100	static int getpixel_3byte(unsigned int x, unsigned int y)	100	static int getpixel_3byte(unsigned int x, unsigned int y)
101	{	101	{
102	unsigned int startbyte = POINTPOS(x, y);	102	unsigned int startbyte = POINTPOS(x, y);
103		103
104	#ifdef BIG_ENDIAN	104	#ifdef BIG_ENDIAN
105	return fbaddress[startbyte] << 16 \| fbaddress[startbyte + 1] << 8 \| fbaddress[startbyte + 2];	105	return fbaddress[startbyte] << 16 \| fbaddress[startbyte + 1] << 8 \| fbaddress[startbyte + 2];
106	#else	106	#else
107	return fbaddress[startbyte + 2] << 16 \| fbaddress[startbyte + 1] << 8 \| fbaddress[startbyte + 0];	107	return fbaddress[startbyte + 2] << 16 \| fbaddress[startbyte + 1] << 8 \| fbaddress[startbyte + 0];
108	#endif	108	#endif
109	}	109	}
110		110
111	/** Put pixel - 16-bit depth (5:6:6) */	111	/** Put pixel - 16-bit depth (5:6:6) */
112	static void putpixel_2byte(unsigned int x, unsigned int y, int color)	112	static void putpixel_2byte(unsigned int x, unsigned int y, int color)
113	{	113	{
114	/* 5-bit, 5-bits, 5-bits */	114	/* 5-bit, 5-bits, 5-bits */
115	((__u16 )(fbaddress + POINTPOS(x, y))) = RED(color, 5) << 11 \| GREEN(color, 6) << 5 \| BLUE(color, 5);	115	((__u16 )(fbaddress + POINTPOS(x, y))) = RED(color, 5) << 11 \| GREEN(color, 6) << 5 \| BLUE(color, 5);
116	}	116	}
117		117
118	/** Return pixel color - 16-bit depth (5:6:6) */	118	/** Return pixel color - 16-bit depth (5:6:6) */
119	static int getpixel_2byte(unsigned int x, unsigned int y)	119	static int getpixel_2byte(unsigned int x, unsigned int y)
120	{	120	{
121	int color = ((__u16 )(fbaddress + POINTPOS(x, y)));	121	int color = ((__u16 )(fbaddress + POINTPOS(x, y)));
122	return (((color >> 11) & 0x1f) << (16 + 3)) \| (((color >> 5) & 0x3f) << (8 + 2)) \| ((color & 0x1f) << 3);	122	return (((color >> 11) & 0x1f) << (16 + 3)) \| (((color >> 5) & 0x3f) << (8 + 2)) \| ((color & 0x1f) << 3);
123	}	123	}
124		124
125	/** Put pixel - 8-bit depth (3:2:3) */	125	/** Put pixel - 8-bit depth (3:2:3) */
126	static void putpixel_1byte(unsigned int x, unsigned int y, int color)	126	static void putpixel_1byte(unsigned int x, unsigned int y, int color)
127	{	127	{
128	fbaddress[POINTPOS(x, y)] = RED(color, 3) << 5 \| GREEN(color, 2) << 3 \| BLUE(color, 3);	128	fbaddress[POINTPOS(x, y)] = RED(color, 3) << 5 \| GREEN(color, 2) << 3 \| BLUE(color, 3);
129	}	129	}
130		130
131	/** Return pixel color - 8-bit depth (3:2:3) */	131	/** Return pixel color - 8-bit depth (3:2:3) */
132	static int getpixel_1byte(unsigned int x, unsigned int y)	132	static int getpixel_1byte(unsigned int x, unsigned int y)
133	{	133	{
134	int color = fbaddress[POINTPOS(x, y)];	134	int color = fbaddress[POINTPOS(x, y)];
135	return (((color >> 5) & 0x7) << (16 + 5)) \| (((color >> 3) & 0x3) << (8 + 6)) \| ((color & 0x7) << 5);	135	return (((color >> 5) & 0x7) << (16 + 5)) \| (((color >> 3) & 0x3) << (8 + 6)) \| ((color & 0x7) << 5);
136	}	136	}
137		137
138	/** Fill line with color BGCOLOR */	138	/** Fill line with color BGCOLOR */
139	static void clear_line(unsigned int y)	139	static void clear_line(unsigned int y)
140	{	140	{
141	unsigned int x;	141	unsigned int x;
142		142
143	for (x = 0; x < xres; x++)	143	for (x = 0; x < xres; x++)
144	(*putpixel)(x, y, BGCOLOR);	144	(*putpixel)(x, y, BGCOLOR);
145	}	145	}
146		146
147		147
148	/** Fill screen with background color */	148	/** Fill screen with background color */
149	static void clear_screen(void)	149	static void clear_screen(void)
150	{	150	{
151	unsigned int y;	151	unsigned int y;
152		152
153	for (y = 0; y < yres; y++)	153	for (y = 0; y < yres; y++)
154	clear_line(y);	154	clear_line(y);
155	}	155	}
156		156
157		157
158	/** Scroll screen one row up */	158	/** Scroll screen one row up */
159	static void scroll_screen(void)	159	static void scroll_screen(void)
160	{	160	{
161	unsigned int i;	161	unsigned int i;
162		162
163	memcpy((void ) fbaddress, (void ) &fbaddress[ROW_BYTES], scanline * yres - ROW_BYTES);	163	memcpy((void ) fbaddress, (void ) &fbaddress[ROW_BYTES], scanline * yres - ROW_BYTES);
164		164
165	/* Clear last row */	165	/* Clear last row */
166	for (i = 0; i < FONT_SCANLINES; i++)	166	for (i = 0; i < FONT_SCANLINES; i++)
167	clear_line((rows - 1) * FONT_SCANLINES + i);	167	clear_line((rows - 1) * FONT_SCANLINES + i);
168	}	168	}
169		169
170		170
171	static void invert_pixel(unsigned int x, unsigned int y)	171	static void invert_pixel(unsigned int x, unsigned int y)
172	{	172	{
173	(putpixel)(x, y, ~(getpixel)(x, y));	173	(putpixel)(x, y, ~(getpixel)(x, y));
174	}	174	}
175		175
176		176
177	/** Draw one line of glyph at a given position */	177	/** Draw one line of glyph at a given position */
178	static void draw_glyph_line(unsigned int glline, unsigned int x, unsigned int y)	178	static void draw_glyph_line(unsigned int glline, unsigned int x, unsigned int y)
179	{	179	{
180	unsigned int i;	180	unsigned int i;
181		181
182	for (i = 0; i < 8; i++)	182	for (i = 0; i < 8; i++)
183	if (glline & (1 << (7 - i))) {	183	if (glline & (1 << (7 - i))) {
184	(*putpixel)(x + i, y, FGCOLOR);	184	(*putpixel)(x + i, y, FGCOLOR);
185	} else	185	} else
186	(*putpixel)(x + i, y, BGCOLOR);	186	(*putpixel)(x + i, y, BGCOLOR);
187	}	187	}
188		188
189	/***************************************************************/	189	/***************************************************************/
190	/* Character-console functions */	190	/* Character-console functions */
191		191
192	/** Draw character at given position */	192	/** Draw character at given position */
193	static void draw_glyph(__u8 glyph, unsigned int col, unsigned int row)	193	static void draw_glyph(__u8 glyph, unsigned int col, unsigned int row)
194	{	194	{
195	unsigned int y;	195	unsigned int y;
196		196
197	for (y = 0; y < FONT_SCANLINES; y++)	197	for (y = 0; y < FONT_SCANLINES; y++)
198	draw_glyph_line(fb_font[glyph * FONT_SCANLINES + y], col * COL_WIDTH, row * FONT_SCANLINES + y);	198	draw_glyph_line(fb_font[glyph * FONT_SCANLINES + y], col * COL_WIDTH, row * FONT_SCANLINES + y);
199	}	199	}
200		200
201	/** Invert character at given position */	201	/** Invert character at given position */
202	static void invert_char(unsigned int col, unsigned int row)	202	static void invert_char(unsigned int col, unsigned int row)
203	{	203	{
204	unsigned int x;	204	unsigned int x;
205	unsigned int y;	205	unsigned int y;
206		206
207	for (x = 0; x < COL_WIDTH; x++)	207	for (x = 0; x < COL_WIDTH; x++)
208	for (y = 0; y < FONT_SCANLINES; y++)	208	for (y = 0; y < FONT_SCANLINES; y++)
209	invert_pixel(col * COL_WIDTH + x, row * FONT_SCANLINES + y);	209	invert_pixel(col * COL_WIDTH + x, row * FONT_SCANLINES + y);
210	}	210	}
211		211
212	/** Draw character at default position */	212	/** Draw character at default position */
213	static void draw_char(char chr)	213	static void draw_char(char chr)
214	{	214	{
215	draw_glyph(chr, position % columns, position / columns);	215	draw_glyph(chr, position % columns, position / columns);
216	}	216	}
217		217
218	static void draw_logo(unsigned int startx, unsigned int starty)	218	static void draw_logo(unsigned int startx, unsigned int starty)
219	{	219	{
220	unsigned int x;	220	unsigned int x;
221	unsigned int y;	221	unsigned int y;
222	unsigned int byte;	222	unsigned int byte;
223	unsigned int rowbytes;	223	unsigned int rowbytes;
224		224
225	rowbytes = (helenos_width - 1) / 8 + 1;	225	rowbytes = (helenos_width - 1) / 8 + 1;
226		226
227	for (y = 0; y < helenos_height; y++)	227	for (y = 0; y < helenos_height; y++)
228	for (x = 0; x < helenos_width; x++) {	228	for (x = 0; x < helenos_width; x++) {
229	byte = helenos_bits[rowbytes * y + x / 8];	229	byte = helenos_bits[rowbytes * y + x / 8];
230	byte >>= x % 8;	230	byte >>= x % 8;
231	if (byte & 1)	231	if (byte & 1)
232	(*putpixel)(startx + x, starty + y, LOGOCOLOR);	232	(*putpixel)(startx + x, starty + y, LOGOCOLOR);
233	}	233	}
234	}	234	}
235		235
236	/***************************************************************/	236	/***************************************************************/
237	/* Stdout specific functions */	237	/* Stdout specific functions */
238		238
239	static void invert_cursor(void)	239	static void invert_cursor(void)
240	{	240	{
241	invert_char(position % columns, position / columns);	241	invert_char(position % columns, position / columns);
242	}	242	}
243		243
244	/** Print character to screen	244	/** Print character to screen
245	*	245	*
246	* Emulate basic terminal commands	246	* Emulate basic terminal commands
247	*/	247	*/
248	static void fb_putchar(chardev_t *dev, char ch)	248	static void fb_putchar(chardev_t *dev, char ch)
249	{	249	{
250	spinlock_lock(&fb_lock);	250	spinlock_lock(&fb_lock);
251		251
252	switch (ch) {	252	switch (ch) {
253	case '\n':	253	case '\n':
254	invert_cursor();	254	invert_cursor();
255	position += columns;	255	position += columns;
256	position -= position % columns;	256	position -= position % columns;
257	break;	257	break;
258	case '\r':	258	case '\r':
259	invert_cursor();	259	invert_cursor();
260	position -= position % columns;	260	position -= position % columns;
261	break;	261	break;
262	case '\b':	262	case '\b':
263	invert_cursor();	263	invert_cursor();
264	if (position % columns)	264	if (position % columns)
265	position--;	265	position--;
266	break;	266	break;
267	case '\t':	267	case '\t':
268	invert_cursor();	268	invert_cursor();
269	do {	269	do {
270	draw_char(' ');	270	draw_char(' ');
271	position++;	271	position++;
272	} while (position % 8);	272	} while ((position % 8) && position < columns * rows);
273	break;	273	break;
274	default:	274	default:
275	draw_char(ch);	275	draw_char(ch);
276	position++;	276	position++;
277	}	277	}
278		278
279	if (position >= columns * rows) {	279	if (position >= columns * rows) {
280	position -= columns;	280	position -= columns;
281	scroll_screen();	281	scroll_screen();
282	}	282	}
283		283
284	invert_cursor();	284	invert_cursor();
285		285
286	spinlock_unlock(&fb_lock);	286	spinlock_unlock(&fb_lock);
287	}	287	}
288		288
289	static chardev_t framebuffer;	289	static chardev_t framebuffer;
290	static chardev_operations_t fb_ops = {	290	static chardev_operations_t fb_ops = {
291	.write = fb_putchar,	291	.write = fb_putchar,
292	};	292	};
293		293
294		294
295	/** Initialize framebuffer as a chardev output device	295	/** Initialize framebuffer as a chardev output device
296	*	296	*
297	* @param addr Address of theframebuffer	297	* @param addr Address of theframebuffer
298	* @param x Screen width in pixels	298	* @param x Screen width in pixels
299	* @param y Screen height in pixels	299	* @param y Screen height in pixels
300	* @param bpp Bits per pixel (8, 16, 24, 32)	300	* @param bpp Bits per pixel (8, 16, 24, 32)
301	* @param scan Bytes per one scanline	301	* @param scan Bytes per one scanline
302	*	302	*
303	*/	303	*/
304	void fb_init(__address addr, unsigned int x, unsigned int y, unsigned int bpp, unsigned int scan)	304	void fb_init(__address addr, unsigned int x, unsigned int y, unsigned int bpp, unsigned int scan)
305	{	305	{
306	switch (bpp) {	306	switch (bpp) {
307	case 8:	307	case 8:
308	putpixel = putpixel_1byte;	308	putpixel = putpixel_1byte;
309	getpixel = getpixel_1byte;	309	getpixel = getpixel_1byte;
310	pixelbytes = 1;	310	pixelbytes = 1;
311	break;	311	break;
312	case 16:	312	case 16:
313	putpixel = putpixel_2byte;	313	putpixel = putpixel_2byte;
314	getpixel = getpixel_2byte;	314	getpixel = getpixel_2byte;
315	pixelbytes = 2;	315	pixelbytes = 2;
316	break;	316	break;
317	case 24:	317	case 24:
318	putpixel = putpixel_3byte;	318	putpixel = putpixel_3byte;
319	getpixel = getpixel_3byte;	319	getpixel = getpixel_3byte;
320	pixelbytes = 3;	320	pixelbytes = 3;
321	break;	321	break;
322	case 32:	322	case 32:
323	putpixel = putpixel_4byte;	323	putpixel = putpixel_4byte;
324	getpixel = getpixel_4byte;	324	getpixel = getpixel_4byte;
325	pixelbytes = 4;	325	pixelbytes = 4;
326	break;	326	break;
327	default:	327	default:
328	panic("Unsupported bpp");	328	panic("Unsupported bpp");
329	}	329	}
330		330
331	fbaddress = (unsigned char *) addr;	331	fbaddress = (unsigned char *) addr;
332	xres = x;	332	xres = x;
333	yres = y;	333	yres = y;
334	scanline = scan;	334	scanline = scan;
335		335
336	rows = y / FONT_SCANLINES;	336	rows = y / FONT_SCANLINES;
337	columns = x / COL_WIDTH;	337	columns = x / COL_WIDTH;
338		338
339	clear_screen();	339	clear_screen();
340	draw_logo(xres - helenos_width, 0);	340	draw_logo(xres - helenos_width, 0);
341	invert_cursor();	341	invert_cursor();
342		342
343	chardev_initialize("fb", &framebuffer, &fb_ops);	343	chardev_initialize("fb", &framebuffer, &fb_ops);
344	stdout = &framebuffer;	344	stdout = &framebuffer;
345	}	345	}
346		346

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/genarch/src/fb/fb.c @ 1472 – Rev 1298 → 1312