/* 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.
*
* - use kernel option 'vga=xxx' or otherwise enable framebuffer device.
* - put somewhere fbsplash.cfg file and an image in .ppm format.
* - run applet: $ setsid fbsplash [params] &
- * -c: hide cursor
- * -d /dev/fbN: framebuffer device (if not /dev/fb0)
- * -s path_to_image_file (can be "-" for stdin)
- * -i path_to_cfg_file
- * -f path_to_fifo (can be "-" for stdin)
+ * -c: hide cursor
+ * -d /dev/fbN: framebuffer device (if not /dev/fb0)
+ * -s path_to_image_file (can be "-" for stdin)
+ * -i path_to_cfg_file
+ * -f path_to_fifo (can be "-" for stdin)
* - if you want to run it only in presence of a kernel parameter
* (for example fbsplash=on), use:
* grep -q "fbsplash=on" </proc/cmdline && setsid fbsplash [params]
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
+ unsigned ns[7]; // n-parameters
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)
-
+#define INIT_G() do { \
+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+} while (0)
+
+#define nbar_width ns[0] // progress bar width
+#define nbar_height ns[1] // progress bar height
+#define nbar_posx ns[2] // progress bar horizontal position
+#define nbar_posy ns[3] // progress bar vertical position
+#define nbar_colr ns[4] // progress bar color red component
+#define nbar_colg ns[5] // progress bar color green component
+#define nbar_colb ns[6] // progress bar color blue component
#if DEBUG
#define DEBUG_MESSAGE(strMessage, args...) \
* 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);
+ bb_perror_msg_and_die("mmap");
close(fbfd);
}
/**
* Draw hollow rectangle on framebuffer
- * \param nx1pos,ny1pos upper left position
- * \param nx2pos,ny2pos down right position
- * \param nred,ngreen,nblue rgb color
*/
-static void fb_drawrectangle(int nx1pos, int ny1pos, int nx2pos, int ny2pos,
- unsigned char nred, unsigned char ngreen, unsigned char nblue)
+static void fb_drawrectangle(void)
{
int cnt;
DATA thispix;
DATA *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
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;
+ 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);
+ cnt = G.nbar_width - 1;
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;
+ 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_height - 1 /* HUH?! G.nbar_posy + G.nbar_height - 1 - G.nbar_posy*/;
do {
*ptr1 = thispix; ptr1 += G.scr_var.xres;
*ptr2 = thispix; ptr2 += G.scr_var.xres;
ngreen >>= 2; // 6-bit green
nblue >>= 3; // 5-bit blue
thispix = nblue + (ngreen << 5) + (nred << (5+6));
-
+
cnt1 = ny2pos - ny1pos;
nypos = ny1pos;
do {
do {
*ptr++ = thispix;
} while (--cnt2 >= 0);
-
+
nypos++;
} while (--cnt1 >= 0);
}
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);
+ fb_drawrectangle();
// inner "empty" rectangle
left_x++;
*/
static void fb_drawimage(void)
{
- char head[256];
- char s[80];
+ char *head, *ptr;
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
+ head = xmalloc(256);
+
+ /* parse ppm header
+ * - A ppm image’s magic number is the two characters "P6".
+ * - Whitespace (blanks, TABs, CRs, LFs).
+ * - A width, formatted as ASCII characters in decimal.
+ * - Whitespace.
+ * - A height, again in ASCII decimal.
+ * - Whitespace.
+ * - The maximum color value (Maxval), again in ASCII decimal. Must be
+ * less than 65536.
+ * - Newline or other single whitespace character.
+ * - A raster of Width * Height pixels in triplets of rgb
+ * in pure binary by 1 (or not implemented 2) bytes.
+ */
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')
+ if (fgets(head, 256, theme_file) == NULL
+ /* do not overrun the buffer */
+ || strlen(bb_common_bufsiz1) >= sizeof(bb_common_bufsiz1) - 256)
bb_error_msg_and_die("bad PPM file '%s'", G.image_filename);
+ ptr = memchr(skip_whitespace(head), '#', 256);
+ if (ptr != NULL)
+ *ptr = 0; /* ignore comments */
+ strcat(bb_common_bufsiz1, head);
// width, height, max_color_val
- if (sscanf(head, "P6 %u %u %u", &width, &height, &i) == 3)
+ if (sscanf(bb_common_bufsiz1, "P6 %u %u %u", &width, &height, &i) == 3
+ && i <= 255)
break;
-// TODO: i must be <= 255!
+ /* If we do not find a signature throughout the whole file then
+ we will diagnose this via EOF on read in the head of the loop. */
}
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(head);
+ if (width != G.scr_var.xres || height != G.scr_var.yres)
+ bb_error_msg_and_die("PPM %dx%d does not match screen %dx%d",
+ width, height, G.scr_var.xres, G.scr_var.yres);
line_size = width*3;
if (width > G.scr_var.xres)
width = G.scr_var.xres;
pixel += 3;
}
}
- free(pixline);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(pixline);
fclose(theme_file);
}
/**
- * Parse configuration file
+ * Parse configuration file
+ * \param *cfg_filename name of the configuration file
*/
-static void init(const char *ini_filename)
+static void init(const char *cfg_filename)
{
static const char const param_names[] ALIGN1 =
- "BAR_LEFT\0" "BAR_TOP\0"
"BAR_WIDTH\0" "BAR_HEIGHT\0"
+ "BAR_LEFT\0" "BAR_TOP\0"
"BAR_R\0" "BAR_G\0" "BAR_B\0"
#if DEBUG
"DEBUG\0"
#endif
;
-
- FILE *inifile;
- char *buf;
-
- inifile = xfopen_stdin(ini_filename);
-
- while ((buf = xmalloc_fgetline(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;
+ 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]);
+ int i = index_in_strings(param_names, token[0]);
+ if (i < 0)
+ bb_error_msg_and_die("syntax error: %s", token[0]);
+ if (i >= 0 && i < 7)
+ G.ns[i] = val;
#if DEBUG
- case 7:
+ if (i == 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);
+ G.logfile_fd = xfopen_for_write("/tmp/fbsplash.log");
}
- free(buf);
+#endif
}
- fclose(inifile);
+ config_close(parser);
}
int fbsplash_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int fbsplash_main(int argc ATTRIBUTE_UNUSED, char **argv)
+int fbsplash_main(int argc UNUSED_PARAM, char **argv)
{
- const char *fb_device, *ini_filename, *fifo_filename;
+ const char *fb_device, *cfg_filename, *fifo_filename;
FILE *fp = fp; // for compiler
+ char *num_buf;
+ unsigned num;
bool bCursorOff;
INIT_G();
// parse command line options
fb_device = "/dev/fb0";
- ini_filename = NULL;
+ cfg_filename = NULL;
fifo_filename = NULL;
bCursorOff = 1 & getopt32(argv, "cs:d:i:f:",
- &G.image_filename, &fb_device, &ini_filename, &fifo_filename);
+ &G.image_filename, &fb_device, &cfg_filename, &fifo_filename);
// parse configuration file
- if (ini_filename)
- init(ini_filename);
+ if (cfg_filename)
+ init(cfg_filename);
// We must have -s IMG
if (!G.image_filename)
bb_show_usage();
- if (fifo_filename)
- fp = xfopen_stdin(fifo_filename);
-
fb_open(fb_device);
if (fifo_filename && bCursorOff) {
fb_drawimage();
- if (fifo_filename) while (1) {
- struct stat statbuf;
- unsigned num;
- char *num_buf;
-
- fb_drawprogressbar(0);
- // Block on read, waiting for some input.
- // Use of <stdio.h> style I/O allows to correctly
- // handle a case when we have many buffered lines
- // already in the pipe
- while ((num_buf = xmalloc_fgetline(fp)) != NULL) {
- if (strncmp(num_buf, "exit", 4) == 0) {
- DEBUG_MESSAGE("exit");
- exit_cmd:
- if (bCursorOff) {
- // restore cursor
- full_write(STDOUT_FILENO, "\x1b" "[?25h", 6);
- }
- return EXIT_SUCCESS;
- }
- num = atoi(num_buf);
- if (isdigit(num_buf[0]) && (num <= 100)) {
-#if DEBUG
- char strVal[10];
- sprintf(strVal, "%d", num);
- DEBUG_MESSAGE(strVal);
-#endif
- fb_drawprogressbar(num);
- }
- free(num_buf);
- }
- // We got EOF/error on fp
- if (ferror(fp))
- goto exit_cmd;
- fclose(fp);
- if (LONE_DASH(fifo_filename)
- || stat(fifo_filename, &statbuf) != 0
- || !S_ISFIFO(statbuf.st_mode)
- ) {
- goto exit_cmd;
- }
- // It's really a named pipe!
+ if (!fifo_filename)
+ return EXIT_SUCCESS;
+
+ fp = xfopen_stdin(fifo_filename);
+ if (fp != stdin) {
// For named pipes, we want to support this:
// mkfifo cmd_pipe
// fbsplash -f cmd_pipe .... &
// echo 33 >cmd_pipe
// ...
// echo 66 >cmd_pipe
- // This means that on EOF, we need to close/open cmd_pipe
- // (just reading again works too, but it hogs CPU)
- fp = xfopen_stdin(fifo_filename); // blocks on open
- } // end of while (1)
+ // This means that we don't want fbsplash to get EOF
+ // when last writer closes input end.
+ // The simplest way is to open fifo for writing too
+ // and become an additional writer :)
+ open(fifo_filename, O_WRONLY); // errors are ignored
+ }
+
+ fb_drawprogressbar(0);
+ // Block on read, waiting for some input.
+ // Use of <stdio.h> style I/O allows to correctly
+ // handle a case when we have many buffered lines
+ // already in the pipe
+ while ((num_buf = xmalloc_fgetline(fp)) != NULL) {
+ if (strncmp(num_buf, "exit", 4) == 0) {
+ DEBUG_MESSAGE("exit");
+ break;
+ }
+ num = atoi(num_buf);
+ if (isdigit(num_buf[0]) && (num <= 100)) {
+#if DEBUG
+ char strVal[10];
+ sprintf(strVal, "%d", num);
+ DEBUG_MESSAGE(strVal);
+#endif
+ fb_drawprogressbar(num);
+ }
+ free(num_buf);
+ }
+
+ if (bCursorOff) // restore cursor
+ full_write(STDOUT_FILENO, "\x1b" "[?25h", 6);
return EXIT_SUCCESS;
}
projects / oweals / busybox.git / blobdiff