diff options
author | Nuno Lucas <ntlucas@gmail.com> | 2011-03-28 17:30:59 +0400 |
---|---|---|
committer | Denys Vlasenko <vda.linux@googlemail.com> | 2011-03-28 17:30:59 +0400 |
commit | 0e89fd9c39655fe721dd8a7a09a6c532f4255c42 (patch) | |
tree | 965989052ed70ec7cadb462e3529c648df362f4c | |
parent | 55068c478ee8e8c058b0c9e37ce0ca57612c95b1 (diff) |
fbsplash: Add support for 24 and 32 bit color depth
function old new delta
fb_drawprogressbar 372 447 +75
fb_pixel_value - 50 +50
fb_write_pixel - 47 +47
fbsplash_main 889 920 +31
fb_drawfullrectangle 101 131 +30
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 3/0 up/down: 233/0) Total: 233 bytes
Signed-off-by: Nuno Lucas <ntlucas@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r-- | miscutils/fbsplash.c | 117 |
1 files changed, 73 insertions, 44 deletions
diff --git a/miscutils/fbsplash.c b/miscutils/fbsplash.c index 150992343..770e70026 100644 --- a/miscutils/fbsplash.c +++ b/miscutils/fbsplash.c @@ -27,10 +27,6 @@ /* 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 @@ -41,6 +37,7 @@ struct globals { const char *image_filename; struct fb_var_screeninfo scr_var; struct fb_fix_screeninfo scr_fix; + unsigned bytes_per_pixel; }; #define G (*ptr_to_globals) #define INIT_G() do { \ @@ -67,7 +64,7 @@ struct globals { /** - * 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) @@ -78,62 +75,98 @@ 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"); + if (G.scr_var.bits_per_pixel < 16 || G.scr_var.bits_per_pixel > 32) + bb_error_msg_and_die("unsupported %u bpp", (int)G.scr_var.bits_per_pixel); + 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_virtual - * BYTES_PER_PIXEL /*(G.scr_var.bits_per_pixel / 8)*/, + G.scr_var.xres * G.scr_var.yres * G.bytes_per_pixel, PROT_WRITE, MAP_SHARED, fbfd, 0); if (G.addr == MAP_FAILED) 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 * BYTES_PER_PIXEL; + 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 + */ +static unsigned fb_pixel_value(unsigned r, unsigned g, unsigned b) +{ + if (G.bytes_per_pixel == 2) { + r >>= 3; // 5-bit red + g >>= 2; // 6-bit green + b >>= 3; // 5-bit blue + return b + (g << 5) + (r << (5+6)); + } + // 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 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_var.xres + G.nbar_posx) * G.bytes_per_pixel; + ptr2 = G.addr + ((G.nbar_posy + G.nbar_height - 1) * G.scr_var.xres + 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); + ptr1 = G.addr + (G.nbar_posy * G.scr_var.xres + G.nbar_posx) * G.bytes_per_pixel; + ptr2 = G.addr + (G.nbar_posy * G.scr_var.xres + 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_var.xres * G.bytes_per_pixel; + ptr2 += G.scr_var.xres * G.bytes_per_pixel; } 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 @@ -142,21 +175,19 @@ 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; + 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_var.xres + 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++; @@ -165,7 +196,7 @@ static void fb_drawfullrectangle(int nx1pos, int ny1pos, int nx2pos, int ny2pos, /** - * Draw a progress bar on framebuffer + * Draw a progress bar on framebuffer * \param percent percentage of loading */ static void fb_drawprogressbar(unsigned percent) @@ -215,7 +246,7 @@ static void fb_drawprogressbar(unsigned percent) /** - * Draw image from PPM file + * Draw image from PPM file */ static void fb_drawimage(void) { @@ -276,18 +307,16 @@ static void fb_drawimage(void) height = G.scr_var.yres; for (j = 0; j < height; j++) { unsigned char *pixel; - DATA *src; + 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 = (DATA *)(G.addr + j * G.scr_fix.line_length); + 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; } } @@ -297,7 +326,7 @@ static void fb_drawimage(void) /** - * Parse configuration file + * Parse configuration file * \param *cfg_filename name of the configuration file */ static void init(const char *cfg_filename) |