diff options
| -rw-r--r-- | include/usage.h | 10 | ||||
| -rw-r--r-- | miscutils/fbsplash.c | 455 | ||||
| -rw-r--r-- | miscutils/fbsplash.ini | 9 |
3 files changed, 470 insertions, 4 deletions
diff --git a/include/usage.h b/include/usage.h index 11f235c89..f950a0a49 100644 --- a/include/usage.h +++ b/include/usage.h @@ -121,15 +121,17 @@ "bar" #define fbsplash_trivial_usage \ - "[-c] [-d DEV] [-s IMGFILE] [-i INIFILE] [-f CMD]" + "-s IMGFILE [-c] [-d DEV] [-i INIFILE] [-f CMD]" #define fbsplash_full_usage \ "Options:\n" \ + "\n -s Image" \ "\n -c Hide cursor" \ "\n -d Framebuffer device (default /dev/fb0)" \ - "\n -s Splash image" \ - "\n -i Config file" \ + "\n -i Config file (var=value):" \ + "\n BAR_LEFT,BAR_TOP,BAR_WIDTH,BAR_HEIGHT" \ + "\n BAR_R,BAR_G,BAR_B" \ "\n -f Control pipe (else exit after drawing image)" \ - "\n commands: 'NN' (% for progressbar) or 'exit'" \ + "\n commands: 'NN' (% for progress bar) or 'exit'" \ #define brctl_trivial_usage \ "COMMAND [BRIDGE [INTERFACE]]" diff --git a/miscutils/fbsplash.c b/miscutils/fbsplash.c new file mode 100644 index 000000000..d82bab499 --- /dev/null +++ b/miscutils/fbsplash.c @@ -0,0 +1,455 @@ +/* vi: set sw=4 ts=4: */ +/* + * splash implementation for busybox + * + * Copyright (C) 2008 Michele Sanges <michele.sanges@otomelara.it>, + * <michele.sanges@gmail.it> + * + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. + * + * Usage: + * - use kernel option 'vga=xxx' or otherwise enable framebuffer device. + * - put somewhere the fbsplash.ini file and image in .ppm format. + * - configure applet by editing .ini file. + * - run applet: $ setsid fbsplash [params] & + * -c: hide cursor + * -d /dev/fbN: framebuffer device (if not /dev/fb0) + * -s path_of_image_file + * -i path_of_ini_file + * -f path_of_fifo (can be "-" for stdin) + * - if you want to run the applet only in presence of a kernel parameter + * (for example fbsplash=on), type: + * grep -q "fbsplash=on" </proc/cmdline && setsid fbsplash [params] + * - commands for fifo: + * "NN" (ASCII decimal number) - percentage to show on progress bar. + * "exit" (or just close fifo) - well you guessed it. + */ + +/** + * Splash implementation for busybox + * \file: fbsplash.c + * \author Michele Sanges <michele.sanges@otomelara.it> <michele.sanges@gmail.com> + * \version 1.0.0 + * \date 07/03/2008 + */ + +#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 + FILE *logfile_fd; // log file +#endif + unsigned char *addr; // pointer to framebuffer memory + unsigned nbar_width; // progress bar width + unsigned nbar_height; // progress bar height + unsigned nbar_posx; // progress bar horizontal position + unsigned nbar_posy; // progress bar vertical position + unsigned char nbar_colr; // progress bar color red component + unsigned char nbar_colg; // progress bar color green component + unsigned char nbar_colb; // progress bar color blue component + const char *image_filename; + struct fb_var_screeninfo scr_var; + struct fb_fix_screeninfo scr_fix; +}; +#define G (*ptr_to_globals) +#define INIT_G() \ + do { \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ + } while (0) + + +#if DEBUG +#define DEBUG_MESSAGE(strMessage, args...) \ + if (G.bdebug_messages) { \ + fprintf(G.logfile_fd, "[%s][%s] - %s\n", \ + __FILE__, __FUNCTION__, strMessage); \ + } +#else +#define DEBUG_MESSAGE(...) ((void)0) +#endif + + +/** + * Open and initialize the framebuffer device + * \param *strfb_device pointer to framebuffer device + */ +static void fb_open(const char *strfb_device) +{ + int fbfd = xopen(strfb_device, O_RDWR); + + // framebuffer properties + 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"); + + // 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)*/ , + PROT_WRITE, MAP_SHARED, fbfd, 0); + if (G.addr == MAP_FAILED) + bb_perror_msg_and_die("can't mmap %s", strfb_device); + close(fbfd); +} + + +/** + * Draw hollow rectangle on framebuffer + * \param nx1pos,ny1pos upper left position + * \param nx2pos,ny2pos down right position + * \param nred24,ngreen24,nblue24 rgb color + */ +static void fb_drawrectangle(int nx1pos, int ny1pos, int nx2pos, int ny2pos, + unsigned char nred, unsigned char ngreen, unsigned char nblue) +{ + int cnt; + DATA thispix; + DATA *ptr1, *ptr2; + + nred >>= 3; // 5-bit red + ngreen >>= 2; // 6-bit green + nblue >>= 3; // 5-bit blue + thispix = nblue + (ngreen << 5) + (nred << (5+6)); + + // horizontal lines + ptr1 = (DATA*)(G.addr + (ny1pos * G.scr_var.xres + nx1pos) * BYTES_PER_PIXEL); + ptr2 = (DATA*)(G.addr + (ny2pos * G.scr_var.xres + nx1pos) * BYTES_PER_PIXEL); + cnt = nx2pos - nx1pos; + do { + *ptr1++ = thispix; + *ptr2++ = thispix; + } while (--cnt >= 0); + + // vertical lines + ptr1 = (DATA*)(G.addr + (ny1pos * G.scr_var.xres + nx1pos) * BYTES_PER_PIXEL); + ptr2 = (DATA*)(G.addr + (ny1pos * G.scr_var.xres + nx2pos) * BYTES_PER_PIXEL); + cnt = ny2pos - ny1pos; + do { + *ptr1 = thispix; ptr1 += G.scr_var.xres; + *ptr2 = thispix; ptr2 += G.scr_var.xres; + } while (--cnt >= 0); +} + + +/** + * Draw filled rectangle on framebuffer + * \param nx1pos,ny1pos upper left position + * \param nx2pos,ny2pos down right position + * \param nred24,ngreen24,nblue24 rgb color + */ +static void fb_drawfullrectangle(int nx1pos, int ny1pos, int nx2pos, int ny2pos, + unsigned char nred, unsigned char ngreen, unsigned char nblue) +{ + int cnt1, cnt2, nypos; + DATA thispix; + DATA *ptr; + + nred >>= 3; // 5-bit red + ngreen >>= 2; // 6-bit green + nblue >>= 3; // 5-bit blue + thispix = nblue + (ngreen << 5) + (nred << (5+6)); + + cnt1 = ny2pos - ny1pos; + nypos = ny1pos; + do { + ptr = (DATA*)(G.addr + (nypos * G.scr_var.xres + nx1pos) * BYTES_PER_PIXEL); + cnt2 = nx2pos - nx1pos; + do { + *ptr++ = thispix; + } while (--cnt2 >= 0); + + nypos++; + } while (--cnt1 >= 0); +} + + +/** + * Draw a progress bar on framebuffer + * \param nPercent percentage of loading + */ +static void fb_drawprogressbar(unsigned nPercent) +{ + int i, left_x, top_y, 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) + return; + // NB: "width" of 1 actually makes rect with width of 2! + fb_drawrectangle( + left_x, top_y, + left_x + width, top_y + height, + G.nbar_colr/2, G.nbar_colg/2, G.nbar_colb/2); + + // inner "empty" rectangle + left_x++; + top_y++; + width -= 2; + height -= 2; + if ((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); + + if (nPercent > 0) { + // actual progress bar + width = width*nPercent/100; + 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; + fb_drawfullrectangle( + left_x, top_y, left_x + width, top_y, + gray_level, gray_level, gray_level); + top_y++; + i--; + } + } +} + + +/** + * Draw image from PPM file + */ +static void fb_drawimage(void) +{ + char head[256]; + char s[80]; + FILE *theme_file; + unsigned char *pixline; + unsigned i, j, width, height, line_size; + + memset(head, 0, sizeof(head)); + theme_file = xfopen_stdin(G.image_filename); + + // parse ppm header + while (1) { + if (fgets(s, sizeof(s), 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) + break; +// TODO: i must be <= 255! + } + + line_size = width*3; + 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); + + if (fread(pixline, 1, line_size, theme_file) != line_size) + bb_error_msg_and_die("bad PPM file '%s'", G.image_filename); + 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; + pixel += 3; + } + } + free(pixline); + fclose(theme_file); +} + + +/** + * Parse configuration file + */ +static void init(const char *ini_filename) +{ + static const char const param_names[] ALIGN1 = + "BAR_LEFT\0" "BAR_TOP\0" + "BAR_WIDTH\0" "BAR_HEIGHT\0" + "BAR_R\0" "BAR_G\0" "BAR_B\0" +#if DEBUG + "DEBUG\0" +#endif + ; + + FILE *inifile; + char *buf; + + inifile = xfopen(ini_filename, "r"); + + while ((buf = xmalloc_getline(inifile)) != NULL) { + char *value_str; + int val; + + if (*buf == '#') { // it's a comment + free(buf); + continue; + } + + value_str = strchr(buf, '='); + if (!value_str) + goto err; + *value_str++ = '\0'; + val = xatoi_u(value_str); + + switch (index_in_strings(param_names, buf)) { + case 0: + // progress bar horizontal position + G.nbar_posx = val; + break; + case 1: + // progress bar vertical position + G.nbar_posy = val; + break; + case 2: + // progress bar width + G.nbar_width = val; + break; + case 3: + // progress bar height + G.nbar_height = val; + break; + case 4: + // progress bar color - red component + G.nbar_colr = val; + break; + case 5: + // progress bar color - green component + G.nbar_colg = val; + break; + case 6: + // progress bar color - blue component + G.nbar_colb = val; + break; +#if DEBUG + case 7: + G.bdebug_messages = val; + if (G.bdebug_messages) + G.logfile_fd = xfopen("/tmp/fbsplash_log", "w"); + break; +#endif + err: + default: + bb_error_msg_and_die("syntax error: '%s'", buf); + } + free(buf); + } + fclose(inifile); +} + + +int fbsplash_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int fbsplash_main(int argc ATTRIBUTE_UNUSED, char **argv) +{ + char num_buf[16]; + const char *fb_device, *ini_filename, *fifo_filename; + int fd = fd; // for compiler + int len, num; + bool bCursorOff; + + INIT_G(); + + // parse command line options + fb_device = "/dev/fb0"; + ini_filename = NULL; + fifo_filename = NULL; + bCursorOff = 1 & getopt32(argv, "cs:d:i:f:", + &G.image_filename, &fb_device, &ini_filename, &fifo_filename); + + // parse configuration file + if (ini_filename) + init(ini_filename); + + // We must have -s IMG + if (!G.image_filename) + bb_show_usage(); + + if (fifo_filename) { + fd = STDIN_FILENO; + if (NOT_LONE_DASH(fifo_filename)) { + // open command fifo/pipe + fd = xopen(fifo_filename, O_RDONLY | O_NOCTTY); + } + } + + fb_open(fb_device); + + if (fifo_filename && bCursorOff) { + // hide cursor (BEFORE any fb ops) + full_write(STDOUT_FILENO, "\x1b" "[?25l", 6); + } + + fb_drawimage(); + + if (fifo_filename) { + num = 0; + goto draw_bar; + + while (1) { + // block on read, waiting for some input + len = safe_read(fd, num_buf, sizeof(num_buf) - 1); + if (len <= 0) // EOF/error + break; + num_buf[len] = '\0'; + // parse command + if (strncmp(num_buf, "exit", 4) == 0) { + DEBUG_MESSAGE("exit"); + break; + } + num = atoi(num_buf); + if (isdigit(num_buf[0]) && (num >= 0) && (num <= 100)) { +#if DEBUG + char strVal[10]; + sprintf(strVal, "%d", num); + DEBUG_MESSAGE(strVal); +#endif + draw_bar: + fb_drawprogressbar(num); + } + } + if (bCursorOff) { + // restore cursor + full_write(STDOUT_FILENO, "\x1b" "[?25h", 6); + } + if (ENABLE_FEATURE_CLEAN_UP) + close(fd); + } + +#if DEBUG + if (ENABLE_FEATURE_CLEAN_UP) + if (G.bdebug_messages) + fclose(G.logfile_fd); +#endif + + return EXIT_SUCCESS; +} diff --git a/miscutils/fbsplash.ini b/miscutils/fbsplash.ini new file mode 100644 index 000000000..b6cf607eb --- /dev/null +++ b/miscutils/fbsplash.ini @@ -0,0 +1,9 @@ +# progress bar position +BAR_LEFT=170 +BAR_TOP=300 +BAR_WIDTH=300 +BAR_HEIGHT=20 +# progress bar color +BAR_R=80 +BAR_G=80 +BAR_B=130 |