]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - tools/bmp_logo.c
9 typedef struct bitmap_s
{ /* bitmap description */
12 uint8_t palette
[256*3];
16 #define DEFAULT_CMAP_SIZE 16 /* size of default color map */
18 void usage(const char *prog
)
20 fprintf(stderr
, "Usage: %s [--gen-info|--gen-data|--gen-bmp] file\n",
25 * Neutralize little endians.
27 uint16_t le_short(uint16_t x
)
30 uint8_t *p
= (uint8_t *)(&x
);
32 val
= (*p
++ & 0xff) << 0;
33 val
|= (*p
& 0xff) << 8;
38 void skip_bytes (FILE *fp
, int n
)
44 __attribute__ ((__noreturn__
))
45 int error (char * msg
, FILE *fp
)
47 fprintf (stderr
, "ERROR: %s\n", msg
);
54 void gen_info(bitmap_t
*b
, uint16_t n_colors
)
57 " * Automatically generated by \"tools/bmp_logo\"\n"
62 "#ifndef __BMP_LOGO_H__\n"
63 "#define __BMP_LOGO_H__\n\n"
64 "#define BMP_LOGO_WIDTH\t\t%d\n"
65 "#define BMP_LOGO_HEIGHT\t\t%d\n"
66 "#define BMP_LOGO_COLORS\t\t%d\n"
67 "#define BMP_LOGO_OFFSET\t\t%d\n\n"
68 "extern unsigned short bmp_logo_palette[];\n"
69 "extern unsigned char bmp_logo_bitmap[];\n\n"
70 "#endif /* __BMP_LOGO_H__ */\n",
71 b
->width
, b
->height
, n_colors
,
75 int main (int argc
, char *argv
[])
82 uint16_t data_offset
, n_colors
, hdr_size
;
89 if (!strcmp(argv
[1], "--gen-info"))
91 else if (!strcmp(argv
[1], "--gen-data"))
93 else if (!strcmp(argv
[1], "--gen-bmp"))
100 fp
= fopen(argv
[2], "rb");
106 if (fgetc (fp
) != 'B' || fgetc (fp
) != 'M')
107 error ("Input file is not a bitmap", fp
);
110 * read width and height of the image, and the number of colors used;
114 if (fread (&data_offset
, sizeof (uint16_t), 1, fp
) != 1)
115 error ("Couldn't read bitmap data offset", fp
);
117 if (fread(&hdr_size
, sizeof(uint16_t), 1, fp
) != 1)
118 error("Couldn't read bitmap header size", fp
);
120 error("Invalid bitmap header", fp
);
122 if (fread (&b
->width
, sizeof (uint16_t), 1, fp
) != 1)
123 error ("Couldn't read bitmap width", fp
);
125 if (fread (&b
->height
, sizeof (uint16_t), 1, fp
) != 1)
126 error ("Couldn't read bitmap height", fp
);
128 if (fread (&n_colors
, sizeof (uint16_t), 1, fp
) != 1)
129 error ("Couldn't read bitmap colors", fp
);
130 skip_bytes(fp
, hdr_size
- 34);
135 data_offset
= le_short(data_offset
);
136 b
->width
= le_short(b
->width
);
137 b
->height
= le_short(b
->height
);
138 n_colors
= le_short(n_colors
);
139 size
= b
->width
* b
->height
;
141 /* assume we are working with an 8-bit file */
142 if ((n_colors
== 0) || (n_colors
> 256 - DEFAULT_CMAP_SIZE
)) {
143 /* reserve DEFAULT_CMAP_SIZE color map entries for default map */
144 n_colors
= 256 - DEFAULT_CMAP_SIZE
;
147 if (mode
== MODE_GEN_INFO
) {
148 gen_info(b
, n_colors
);
153 " * Automatically generated by \"tools/bmp_logo\"\n"
158 "#ifndef __BMP_LOGO_DATA_H__\n"
159 "#define __BMP_LOGO_DATA_H__\n\n");
161 /* read and print the palette information */
162 printf("unsigned short bmp_logo_palette[] = {\n");
164 for (i
=0; i
<n_colors
; ++i
) {
165 b
->palette
[(int)(i
*3+2)] = fgetc(fp
);
166 b
->palette
[(int)(i
*3+1)] = fgetc(fp
);
167 b
->palette
[(int)(i
*3+0)] = fgetc(fp
);
170 printf ("%s0x0%X%X%X,%s",
171 ((i
%8) == 0) ? "\t" : " ",
172 (b
->palette
[(int)(i
*3+0)] >> 4) & 0x0F,
173 (b
->palette
[(int)(i
*3+1)] >> 4) & 0x0F,
174 (b
->palette
[(int)(i
*3+2)] >> 4) & 0x0F,
175 ((i
%8) == 7) ? "\n" : ""
179 /* seek to offset indicated by file header */
180 if (mode
== MODE_GEN_BMP
) {
181 /* copy full bmp file */
182 fseek(fp
, 0L, SEEK_END
);
184 fseek(fp
, 0L, SEEK_SET
);
186 fseek(fp
, (long)data_offset
, SEEK_SET
);
189 /* allocate memory */
190 b
->data
= (uint8_t *)malloc(size
);
192 error("Error allocating memory for file", fp
);
194 /* read the bitmap; leave room for default color map */
198 printf("unsigned char bmp_logo_bitmap[] = {\n");
199 if (mode
== MODE_GEN_BMP
) {
201 for (i
= 0; i
< size
; i
++)
202 b
->data
[i
] = (uint8_t)fgetc(fp
);
204 for (i
= (b
->height
- 1) * b
->width
; i
>= 0; i
-= b
->width
) {
205 for (x
= 0; x
< b
->width
; x
++) {
206 b
->data
[i
+ x
] = (uint8_t)fgetc(fp
)
212 for (i
= 0; i
< size
; ++i
) {
217 ((i
%8) == 7) ? '\n' : ' '
222 "#endif /* __BMP_LOGO_DATA_H__ */\n"