Am 01.10.2016 um 13:26 schrieb Mattias Schlenker:
Hi everyone,
I maintain a few (commercial) live distributions and have to fulfil
the need of a few customers for a nice graphical boot splash.
Unfortunately busybox' fbsplash was too unflexible, so I added a bit
more configurability:
* Specify a background color which is used to flood the whole screen
before drawing the image and the progress bar
* Specify an x and y offset of the ppm image
* Specify an x or y offset larger than the respective screen size to
move the image to the right or bottom edge of the screen (or
bottom right corner)
The attached patch just re-uses functions already in fbsplash.c and
introduces five more config options, this should result in the same
size of the busybox binary. Even if these config options are not set,
the screen is blanked all black before painting the splash, which
might be desired in most cases (and usually is done by using
fullscreen images).
With the patch I am able to calculate the position of logo and
progress bar by a script before invoking fbsplash and do not have to
add a splash for each and every screen resolution. Initially I was
thinking about adding more options: color of progess bar and the
posibility to specify a gradient, but this might have enlarged the
binary which is not desirable.
I just updated the patch: The calculation for cropping the image was
wrong, the parameter name "IMAGE_WIDTH" proved too long on 32 bit
systems and I added a "NOFILL=1" option. This option allows drawing an
arbitary image to an arbitary position without completely wiping the
framebuffer first. Take a look at the demo script (run with the path to
your busybox binary) as first parameter: The scripts reads the
framebuffer dimensions, creates two config files, paints an image on a
plain background, progress bar and changing icon beneath the progress bar.
The demo script: http://distfiles.lesslinux.org/fbsplash_demo.tar.gz
The patch is attached.
Yours,
Mattias
--
Mattias Schlenker - Freier IT-Fachredakteur und -autor
redakt...@mattiasschlenker.de
Mattias Schlenker - IT-Consulting, Softwareentwicklung
consult...@mattiasschlenker.de
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Phone: +49 341 39290767 Fax: +49 341 30393578
Mobile: +49 163 6953657 Another mobile: +49 159 03160327
VATIN_________________________________________ DE240998538
Fork me!____________________ https://github.com/mschlenker
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diff -ruN busybox-1.25.0/miscutils/fbsplash.c busybox-1.25.0.mod/miscutils/fbsplash.c
--- busybox-1.25.0/miscutils/fbsplash.c 2016-05-26 19:42:44.000000000 +0200
+++ busybox-1.25.0.mod/miscutils/fbsplash.c 2016-10-03 12:01:26.611456712 +0200
@@ -29,7 +29,8 @@
//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 BAR_R,BAR_G,BAR_B,IMG_LEFT,IMG_TOP"
+//usage: "\n BG_R,BG_G,BG_B,NOFILL"
//usage: "\n -f Control pipe (else exit after drawing image)"
//usage: "\n commands: 'NN' (% for progress bar) or 'exit'"
@@ -46,7 +47,7 @@
FILE *logfile_fd; // log file
#endif
unsigned char *addr; // pointer to framebuffer memory
- unsigned ns[7]; // n-parameters
+ unsigned ns[13]; // n-parameters
const char *image_filename;
struct fb_var_screeninfo scr_var;
struct fb_fix_screeninfo scr_fix;
@@ -68,6 +69,12 @@
#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
+#define image_posx ns[7] // splash image horizontal position
+#define image_posy ns[8] // splash image verical position
+#define flood_colr ns[9] // background color red component
+#define flood_colg ns[10] // background color green component
+#define flood_colb ns[11] // background color blue component
+#define do_not_flood ns[12] // do not flood the whole screen with one color
#if DEBUG
#define DEBUG_MESSAGE(strMessage, args...) \
@@ -340,6 +347,14 @@
G.nbar_colr, G.nbar_colg, G.nbar_colb);
}
+/**
+ * Flood the background with one color
+ */
+static void fb_colorfill(void)
+{
+ fb_drawfullrectangle(0, 0, G.scr_var.xres - 1, G.scr_var.yres - 1,
+ G.flood_colr, G.flood_colg, G.flood_colb);
+}
/**
* Draw image from PPM file
@@ -398,11 +413,24 @@
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;
+
+ /* specify a image position outside the visible area to position the splash
+ at the edge of the screen */
+ if (G.image_posx >= G.scr_var.xres)
+ G.image_posx = G.scr_var.xres - width;
+ if (G.image_posy >= G.scr_var.yres)
+ G.image_posy = G.scr_var.yres - height;
+ /* crop the image if upper left corner is within visible area */
+ if (G.image_posx + height > G.scr_var.xres)
+ width = width - ( G.image_posx + width - G.scr_var.xres );
+ if (G.image_posy + height > G.scr_var.yres)
+ height = height - ( G.image_posy + height - G.scr_var.yres );
+
for (j = 0; j < height; j++) {
unsigned char *pixel;
unsigned char *src;
@@ -413,7 +441,8 @@
src = G.addr + j * G.scr_fix.line_length;
for (i = 0; i < width; i++) {
unsigned thispix = fb_pixel_value(pixel[0], pixel[1], pixel[2]);
- fb_write_pixel(src, thispix);
+ fb_write_pixel(G.image_posy * G.scr_fix.line_length +
+ G.image_posx * G.bytes_per_pixel + src, thispix);
src += G.bytes_per_pixel;
pixel += 3;
}
@@ -433,6 +462,9 @@
"BAR_WIDTH\0" "BAR_HEIGHT\0"
"BAR_LEFT\0" "BAR_TOP\0"
"BAR_R\0" "BAR_G\0" "BAR_B\0"
+ "IMG_LEFT\0" "IMG_TOP\0"
+ "BG_R\0" "BG_G\0" "BG_B\0"
+ "NOFILL\0"
#if DEBUG
"DEBUG\0"
#endif
@@ -445,10 +477,10 @@
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)
+ if (i >= 0 && i < 13)
G.ns[i] = val;
#if DEBUG
- if (i == 7) {
+ if (i == 13) {
G.bdebug_messages = val;
if (G.bdebug_messages)
G.logfile_fd = xfopen_for_write("/tmp/fbsplash.log");
@@ -492,6 +524,9 @@
full_write(STDOUT_FILENO, "\033[?25l", 6);
}
+ if (G.do_not_flood < 1)
+ fb_colorfill();
+
fb_drawimage();
if (!fifo_filename)
diff -ruN busybox-1.25.0/miscutils/fbsplash.cfg busybox-1.25.0.mod/miscutils/fbsplash.cfg
--- busybox-1.25.0/miscutils/fbsplash.cfg 2015-07-13 04:18:47.000000000 +0200
+++ busybox-1.25.0.mod/miscutils/fbsplash.cfg 2016-10-03 11:58:12.055738247 +0200
@@ -1,9 +1,18 @@
# progress bar position
BAR_LEFT=170
-BAR_TOP=300
+BAR_TOP=400
BAR_WIDTH=300
BAR_HEIGHT=20
# progress bar color
BAR_R=80
BAR_G=80
BAR_B=130
+# image position
+IMAGE_LEFT=100
+IMAGE_TOP=100
+# background
+BG_R=80
+BG_G=130
+BG_B=80
+# set greater than 0 to suppress filling the whole screen with one color
+NOFILL=0
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