/* vi: set sw=4 ts=4: */
/*
- * Copyright (C) 2008 Michele Sanges <michele.sanges@otomelara.it>,
- * <michele.sanges@gmail.it>
+ * Copyright (C) 2008 Michele Sanges <michele.sanges@gmail.com>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*
* Usage:
* - use kernel option 'vga=xxx' or otherwise enable framebuffer device.
* "exit" (or just close fifo) - well you guessed it.
*/
+//usage:#define fbsplash_trivial_usage
+//usage: "-s IMGFILE [-c] [-d DEV] [-i INIFILE] [-f CMD]"
+//usage:#define fbsplash_full_usage "\n\n"
+//usage: " -s Image"
+//usage: "\n -c Hide cursor"
+//usage: "\n -d Framebuffer device (default /dev/fb0)"
+//usage: "\n -i Config file (var=value):"
+//usage: "\n BAR_LEFT,BAR_TOP,BAR_WIDTH,BAR_HEIGHT"
+//usage: "\n BAR_R,BAR_G,BAR_B"
+//usage: "\n -f Control pipe (else exit after drawing image)"
+//usage: "\n commands: 'NN' (% for progress bar) or 'exit'"
+
#include "libbb.h"
#include <linux/fb.h>
/* If you want logging messages on /tmp/fbsplash.log... */
#define DEBUG 0
-#define BYTES_PER_PIXEL 2
-
-typedef unsigned short DATA;
-
struct globals {
#if DEBUG
bool bdebug_messages; // enable/disable logging
const char *image_filename;
struct fb_var_screeninfo scr_var;
struct fb_fix_screeninfo scr_fix;
+ unsigned bytes_per_pixel;
+ // cached (8 - scr_var.COLOR.length):
+ unsigned red_shift;
+ unsigned green_shift;
+ unsigned blue_shift;
};
#define G (*ptr_to_globals)
#define INIT_G() do { \
#define DEBUG_MESSAGE(...) ((void)0)
#endif
+/**
+ * Configure palette for RGB:332
+ */
+static void fb_setpal(int fd)
+{
+ struct fb_cmap cmap;
+ /* fb colors are 16 bit */
+ unsigned short red[256], green[256], blue[256];
+ unsigned i;
+
+ /* RGB:332 */
+ for (i = 0; i < 256; i++) {
+ /* Color is encoded in pixel value as rrrgggbb.
+ * 3-bit color is mapped to 16-bit one as:
+ * 000 -> 00000000 00000000
+ * 001 -> 00100100 10010010
+ * ...
+ * 011 -> 01101101 10110110
+ * 100 -> 10010010 01001001
+ * ...
+ * 111 -> 11111111 11111111
+ */
+ red[i] = (( i >> 5 ) * 0x9249) >> 2; // rrr * 00 10010010 01001001 >> 2
+ green[i] = (((i >> 2) & 0x7) * 0x9249) >> 2; // ggg * 00 10010010 01001001 >> 2
+ /* 2-bit color is easier: */
+ blue[i] = ( i & 0x3) * 0x5555; // bb * 01010101 01010101
+ }
+
+ cmap.start = 0;
+ cmap.len = 256;
+ cmap.red = red;
+ cmap.green = green;
+ cmap.blue = blue;
+ cmap.transp = 0;
+
+ xioctl(fd, FBIOPUTCMAP, &cmap);
+}
/**
- * Open and initialize the framebuffer device
+ * Open and initialize the framebuffer device
* \param *strfb_device pointer to framebuffer device
*/
static void fb_open(const char *strfb_device)
xioctl(fbfd, FBIOGET_VSCREENINFO, &G.scr_var);
xioctl(fbfd, FBIOGET_FSCREENINFO, &G.scr_fix);
- if (G.scr_var.bits_per_pixel != 16)
- bb_error_msg_and_die("only 16 bpp is supported");
+ switch (G.scr_var.bits_per_pixel) {
+ case 8:
+ fb_setpal(fbfd);
+ break;
+
+ case 16:
+ case 24:
+ case 32:
+ break;
+
+ default:
+ bb_error_msg_and_die("unsupported %u bpp", (int)G.scr_var.bits_per_pixel);
+ break;
+ }
+
+ G.red_shift = 8 - G.scr_var.red.length;
+ G.green_shift = 8 - G.scr_var.green.length;
+ G.blue_shift = 8 - G.scr_var.blue.length;
+ G.bytes_per_pixel = (G.scr_var.bits_per_pixel + 7) >> 3;
// map the device in memory
G.addr = mmap(NULL,
- G.scr_var.xres * G.scr_var.yres
- * BYTES_PER_PIXEL /*(G.scr_var.bits_per_pixel / 8)*/ ,
+ G.scr_var.yres * G.scr_fix.line_length,
PROT_WRITE, MAP_SHARED, fbfd, 0);
if (G.addr == MAP_FAILED)
- bb_perror_msg_and_die("can't mmap %s", strfb_device);
+ bb_perror_msg_and_die("mmap");
+
+ // point to the start of the visible screen
+ G.addr += G.scr_var.yoffset * G.scr_fix.line_length + G.scr_var.xoffset * G.bytes_per_pixel;
close(fbfd);
}
/**
- * Draw hollow rectangle on framebuffer
+ * Return pixel value of the passed RGB color.
+ * This is performance critical fn.
+ */
+static unsigned fb_pixel_value(unsigned r, unsigned g, unsigned b)
+{
+ /* We assume that the r,g,b values are <= 255 */
+
+ if (G.bytes_per_pixel == 1) {
+ r = r & 0xe0; // 3-bit red
+ g = (g >> 3) & 0x1c; // 3-bit green
+ b = b >> 6; // 2-bit blue
+ return r + g + b;
+ }
+ if (G.bytes_per_pixel == 2) {
+ // ARM PL110 on Integrator/CP has RGBA5551 bit arrangement.
+ // We want to support bit locations like that.
+ //
+ // First shift out unused bits
+ r = r >> G.red_shift;
+ g = g >> G.green_shift;
+ b = b >> G.blue_shift;
+ // Then shift the remaining bits to their offset
+ return (r << G.scr_var.red.offset) +
+ (g << G.scr_var.green.offset) +
+ (b << G.scr_var.blue.offset);
+ }
+ // RGB 888
+ return b + (g << 8) + (r << 16);
+}
+
+/**
+ * Draw pixel on framebuffer
+ */
+static void fb_write_pixel(unsigned char *addr, unsigned pixel)
+{
+ switch (G.bytes_per_pixel) {
+ case 1:
+ *addr = pixel;
+ break;
+ case 2:
+ *(uint16_t *)addr = pixel;
+ break;
+ case 4:
+ *(uint32_t *)addr = pixel;
+ break;
+ default: // 24 bits per pixel
+ addr[0] = pixel;
+ addr[1] = pixel >> 8;
+ addr[2] = pixel >> 16;
+ }
+}
+
+
+/**
+ * Draw hollow rectangle on framebuffer
*/
static void fb_drawrectangle(void)
{
int cnt;
- DATA thispix;
- DATA *ptr1, *ptr2;
+ unsigned thispix;
+ unsigned char *ptr1, *ptr2;
unsigned char nred = G.nbar_colr/2;
unsigned char ngreen = G.nbar_colg/2;
unsigned char nblue = G.nbar_colb/2;
- nred >>= 3; // 5-bit red
- ngreen >>= 2; // 6-bit green
- nblue >>= 3; // 5-bit blue
- thispix = nblue + (ngreen << 5) + (nred << (5+6));
+ thispix = fb_pixel_value(nred, ngreen, nblue);
// horizontal lines
- ptr1 = (DATA*)(G.addr + (G.nbar_posy * G.scr_var.xres + G.nbar_posx) * BYTES_PER_PIXEL);
- ptr2 = (DATA*)(G.addr + ((G.nbar_posy + G.nbar_height - 1) * G.scr_var.xres + G.nbar_posx) * BYTES_PER_PIXEL);
+ ptr1 = G.addr + G.nbar_posy * G.scr_fix.line_length + G.nbar_posx * G.bytes_per_pixel;
+ ptr2 = G.addr + (G.nbar_posy + G.nbar_height - 1) * G.scr_fix.line_length + G.nbar_posx * G.bytes_per_pixel;
cnt = G.nbar_width - 1;
do {
- *ptr1++ = thispix;
- *ptr2++ = thispix;
+ fb_write_pixel(ptr1, thispix);
+ fb_write_pixel(ptr2, thispix);
+ ptr1 += G.bytes_per_pixel;
+ ptr2 += G.bytes_per_pixel;
} while (--cnt >= 0);
// vertical lines
- ptr1 = (DATA*)(G.addr + (G.nbar_posy * G.scr_var.xres + G.nbar_posx) * BYTES_PER_PIXEL);
- ptr2 = (DATA*)(G.addr + (G.nbar_posy * G.scr_var.xres + G.nbar_posx + G.nbar_width - 1) * BYTES_PER_PIXEL);
- cnt = G.nbar_posy + G.nbar_height - 1 - G.nbar_posy;
+ ptr1 = G.addr + G.nbar_posy * G.scr_fix.line_length + G.nbar_posx * G.bytes_per_pixel;
+ ptr2 = G.addr + G.nbar_posy * G.scr_fix.line_length + (G.nbar_posx + G.nbar_width - 1) * G.bytes_per_pixel;
+ cnt = G.nbar_height - 1;
do {
- *ptr1 = thispix; ptr1 += G.scr_var.xres;
- *ptr2 = thispix; ptr2 += G.scr_var.xres;
+ fb_write_pixel(ptr1, thispix);
+ fb_write_pixel(ptr2, thispix);
+ ptr1 += G.scr_fix.line_length;
+ ptr2 += G.scr_fix.line_length;
} while (--cnt >= 0);
}
/**
- * Draw filled rectangle on framebuffer
+ * Draw filled rectangle on framebuffer
* \param nx1pos,ny1pos upper left position
* \param nx2pos,ny2pos down right position
* \param nred,ngreen,nblue rgb color
unsigned char nred, unsigned char ngreen, unsigned char nblue)
{
int cnt1, cnt2, nypos;
- DATA thispix;
- DATA *ptr;
+ unsigned thispix;
+ unsigned char *ptr;
- nred >>= 3; // 5-bit red
- ngreen >>= 2; // 6-bit green
- nblue >>= 3; // 5-bit blue
- thispix = nblue + (ngreen << 5) + (nred << (5+6));
+ thispix = fb_pixel_value(nred, ngreen, nblue);
cnt1 = ny2pos - ny1pos;
nypos = ny1pos;
do {
- ptr = (DATA*)(G.addr + (nypos * G.scr_var.xres + nx1pos) * BYTES_PER_PIXEL);
+ ptr = G.addr + nypos * G.scr_fix.line_length + nx1pos * G.bytes_per_pixel;
cnt2 = nx2pos - nx1pos;
do {
- *ptr++ = thispix;
+ fb_write_pixel(ptr, thispix);
+ ptr += G.bytes_per_pixel;
} while (--cnt2 >= 0);
nypos++;
/**
- * Draw a progress bar on framebuffer
+ * Draw a progress bar on framebuffer
* \param percent percentage of loading
*/
static void fb_drawprogressbar(unsigned percent)
{
- int i, left_x, top_y, width, height;
+ int left_x, top_y, pos_x;
+ unsigned width, height;
// outer box
left_x = G.nbar_posx;
top_y = G.nbar_posy;
width = G.nbar_width - 1;
height = G.nbar_height - 1;
- if ((height | width) < 0)
+ if ((int)(height | width) < 0)
return;
// NB: "width" of 1 actually makes rect with width of 2!
fb_drawrectangle();
top_y++;
width -= 2;
height -= 2;
- if ((height | width) < 0)
+ if ((int)(height | width) < 0)
return;
- fb_drawfullrectangle(
- left_x, top_y,
- left_x + width, top_y + height,
- G.nbar_colr, G.nbar_colg, G.nbar_colb);
+ pos_x = left_x;
if (percent > 0) {
+ int i, y;
+
// actual progress bar
- width = width * percent / 100;
+ pos_x += (unsigned)(width * percent) / 100;
+
+ y = top_y;
i = height;
if (height == 0)
height++; // divide by 0 is bad
while (i >= 0) {
// draw one-line thick "rectangle"
// top line will have gray lvl 200, bottom one 100
- unsigned gray_level = 100 + i*100/height;
+ unsigned gray_level = 100 + (unsigned)i*100 / height;
fb_drawfullrectangle(
- left_x, top_y, left_x + width, top_y,
+ left_x, y, pos_x, y,
gray_level, gray_level, gray_level);
- top_y++;
+ y++;
i--;
}
}
+
+ fb_drawfullrectangle(
+ pos_x, top_y,
+ left_x + width, top_y + height,
+ G.nbar_colr, G.nbar_colg, G.nbar_colb);
}
/**
- * Draw image from PPM file
+ * Draw image from PPM file
*/
static void fb_drawimage(void)
{
- char head[256];
- char s[80];
FILE *theme_file;
+ char *read_ptr;
unsigned char *pixline;
unsigned i, j, width, height, line_size;
- memset(head, 0, sizeof(head));
- theme_file = xfopen_stdin(G.image_filename);
+ if (LONE_DASH(G.image_filename)) {
+ theme_file = stdin;
+ } else {
+ int fd = open_zipped(G.image_filename);
+ if (fd < 0)
+ bb_simple_perror_msg_and_die(G.image_filename);
+ theme_file = xfdopen_for_read(fd);
+ }
- // parse ppm header
+ /* Parse ppm header:
+ * - Magic: two characters "P6".
+ * - Whitespace (blanks, TABs, CRs, LFs).
+ * - A width, formatted as ASCII characters in decimal.
+ * - Whitespace.
+ * - A height, ASCII decimal.
+ * - Whitespace.
+ * - The maximum color value, ASCII decimal, in 0..65535
+ * - Newline or other single whitespace character.
+ * (we support newline only)
+ * - A raster of Width * Height pixels in triplets of rgb
+ * in pure binary by 1 or 2 bytes. (we support only 1 byte)
+ */
+#define concat_buf bb_common_bufsiz1
+ read_ptr = concat_buf;
while (1) {
- if (fgets(s, sizeof(s), theme_file) == NULL)
+ int w, h, max_color_val;
+ int rem = concat_buf + sizeof(concat_buf) - read_ptr;
+ if (rem < 2
+ || fgets(read_ptr, rem, theme_file) == NULL
+ ) {
bb_error_msg_and_die("bad PPM file '%s'", G.image_filename);
-
- if (s[0] == '#')
- continue;
-
- if (strlen(head) + strlen(s) >= sizeof(head))
- bb_error_msg_and_die("bad PPM file '%s'", G.image_filename);
-
- strcat(head, s);
- if (head[0] != 'P' || head[1] != '6')
- bb_error_msg_and_die("bad PPM file '%s'", G.image_filename);
-
- // width, height, max_color_val
- if (sscanf(head, "P6 %u %u %u", &width, &height, &i) == 3)
+ }
+ read_ptr = strchrnul(read_ptr, '#');
+ *read_ptr = '\0'; /* ignore #comments */
+ if (sscanf(concat_buf, "P6 %u %u %u", &w, &h, &max_color_val) == 3
+ && max_color_val <= 255
+ ) {
+ width = w; /* w is on stack, width may be in register */
+ height = h;
break;
-// TODO: i must be <= 255!
+ }
}
line_size = width*3;
+ pixline = xmalloc(line_size);
+
if (width > G.scr_var.xres)
width = G.scr_var.xres;
if (height > G.scr_var.yres)
height = G.scr_var.yres;
-
- pixline = xmalloc(line_size);
for (j = 0; j < height; j++) {
- unsigned char *pixel = pixline;
- DATA *src = (DATA *)(G.addr + j * G.scr_fix.line_length);
+ unsigned char *pixel;
+ unsigned char *src;
if (fread(pixline, 1, line_size, theme_file) != line_size)
bb_error_msg_and_die("bad PPM file '%s'", G.image_filename);
+ pixel = pixline;
+ src = G.addr + j * G.scr_fix.line_length;
for (i = 0; i < width; i++) {
- unsigned thispix;
- thispix = (((unsigned)pixel[0] << 8) & 0xf800)
- | (((unsigned)pixel[1] << 3) & 0x07e0)
- | (((unsigned)pixel[2] >> 3));
- *src++ = thispix;
+ unsigned thispix = fb_pixel_value(pixel[0], pixel[1], pixel[2]);
+ fb_write_pixel(src, thispix);
+ src += G.bytes_per_pixel;
pixel += 3;
}
}
/**
- * Parse configuration file
+ * Parse configuration file
* \param *cfg_filename name of the configuration file
*/
static void init(const char *cfg_filename)
{
- static const char const param_names[] ALIGN1 =
+ static const char param_names[] ALIGN1 =
"BAR_WIDTH\0" "BAR_HEIGHT\0"
"BAR_LEFT\0" "BAR_TOP\0"
"BAR_R\0" "BAR_G\0" "BAR_B\0"
char *token[2];
parser_t *parser = config_open2(cfg_filename, xfopen_stdin);
while (config_read(parser, token, 2, 2, "#=",
- (PARSE_NORMAL | PARSE_MIN_DIE) & ~(PARSE_TRIM | PARSE_COLLAPSE))) {
- unsigned val = xatoi_u(token[1]);
+ (PARSE_NORMAL | PARSE_MIN_DIE) & ~(PARSE_TRIM | PARSE_COLLAPSE))) {
+ unsigned val = xatoi_positive(token[1]);
int i = index_in_strings(param_names, token[0]);
if (i < 0)
- bb_error_msg_and_die("syntax error: '%s'", token[0]);
+ bb_error_msg_and_die("syntax error: %s", token[0]);
if (i >= 0 && i < 7)
G.ns[i] = val;
#if DEBUG
if (fifo_filename && bCursorOff) {
// hide cursor (BEFORE any fb ops)
- full_write(STDOUT_FILENO, "\x1b" "[?25l", 6);
+ full_write(STDOUT_FILENO, "\033[?25l", 6);
}
fb_drawimage();
num = atoi(num_buf);
if (isdigit(num_buf[0]) && (num <= 100)) {
#if DEBUG
- char strVal[10];
- sprintf(strVal, "%d", num);
- DEBUG_MESSAGE(strVal);
+ DEBUG_MESSAGE(itoa(num));
#endif
fb_drawprogressbar(num);
}
}
if (bCursorOff) // restore cursor
- full_write(STDOUT_FILENO, "\x1b" "[?25h", 6);
+ full_write(STDOUT_FILENO, "\033[?25h", 6);
return EXIT_SUCCESS;
}
projects / platform / upstream / busybox.git / blobdiff