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author | 2023-10-10 14:33:42 +0000 | |
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committer | 2023-10-10 14:33:42 +0000 | |
commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/tools/bmp_logo.c | |
parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/tools/bmp_logo.c')
-rw-r--r-- | roms/u-boot/tools/bmp_logo.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/roms/u-boot/tools/bmp_logo.c b/roms/u-boot/tools/bmp_logo.c new file mode 100644 index 000000000..74fcadca6 --- /dev/null +++ b/roms/u-boot/tools/bmp_logo.c @@ -0,0 +1,228 @@ +#include "compiler.h" + +enum { + MODE_GEN_INFO, + MODE_GEN_DATA, + MODE_GEN_BMP +}; + +typedef struct bitmap_s { /* bitmap description */ + uint16_t width; + uint16_t height; + uint8_t palette[256*3]; + uint8_t *data; +} bitmap_t; + +#define DEFAULT_CMAP_SIZE 16 /* size of default color map */ + +void usage(const char *prog) +{ + fprintf(stderr, "Usage: %s [--gen-info|--gen-data|--gen-bmp] file\n", + prog); +} + +/* + * Neutralize little endians. + */ +uint16_t le_short(uint16_t x) +{ + uint16_t val; + uint8_t *p = (uint8_t *)(&x); + + val = (*p++ & 0xff) << 0; + val |= (*p & 0xff) << 8; + + return val; +} + +void skip_bytes (FILE *fp, int n) +{ + while (n-- > 0) + fgetc (fp); +} + +__attribute__ ((__noreturn__)) +int error (char * msg, FILE *fp) +{ + fprintf (stderr, "ERROR: %s\n", msg); + + fclose (fp); + + exit (EXIT_FAILURE); +} + +void gen_info(bitmap_t *b, uint16_t n_colors) +{ + printf("/*\n" + " * Automatically generated by \"tools/bmp_logo\"\n" + " *\n" + " * DO NOT EDIT\n" + " *\n" + " */\n\n\n" + "#ifndef __BMP_LOGO_H__\n" + "#define __BMP_LOGO_H__\n\n" + "#define BMP_LOGO_WIDTH\t\t%d\n" + "#define BMP_LOGO_HEIGHT\t\t%d\n" + "#define BMP_LOGO_COLORS\t\t%d\n" + "#define BMP_LOGO_OFFSET\t\t%d\n\n" + "extern unsigned short bmp_logo_palette[];\n" + "extern unsigned char bmp_logo_bitmap[];\n\n" + "#endif /* __BMP_LOGO_H__ */\n", + b->width, b->height, n_colors, + DEFAULT_CMAP_SIZE); +} + +int main (int argc, char *argv[]) +{ + int mode, i, x; + int size; + FILE *fp; + bitmap_t bmp; + bitmap_t *b = &bmp; + uint16_t data_offset, n_colors, hdr_size; + + if (argc < 3) { + usage(argv[0]); + exit (EXIT_FAILURE); + } + + if (!strcmp(argv[1], "--gen-info")) + mode = MODE_GEN_INFO; + else if (!strcmp(argv[1], "--gen-data")) + mode = MODE_GEN_DATA; + else if (!strcmp(argv[1], "--gen-bmp")) + mode = MODE_GEN_BMP; + else { + usage(argv[0]); + exit(EXIT_FAILURE); + } + + fp = fopen(argv[2], "rb"); + if (!fp) { + perror(argv[2]); + exit (EXIT_FAILURE); + } + + if (fgetc (fp) != 'B' || fgetc (fp) != 'M') + error ("Input file is not a bitmap", fp); + + /* + * read width and height of the image, and the number of colors used; + * ignore the rest + */ + skip_bytes (fp, 8); + if (fread (&data_offset, sizeof (uint16_t), 1, fp) != 1) + error ("Couldn't read bitmap data offset", fp); + skip_bytes(fp, 2); + if (fread(&hdr_size, sizeof(uint16_t), 1, fp) != 1) + error("Couldn't read bitmap header size", fp); + if (hdr_size < 40) + error("Invalid bitmap header", fp); + skip_bytes(fp, 2); + if (fread (&b->width, sizeof (uint16_t), 1, fp) != 1) + error ("Couldn't read bitmap width", fp); + skip_bytes (fp, 2); + if (fread (&b->height, sizeof (uint16_t), 1, fp) != 1) + error ("Couldn't read bitmap height", fp); + skip_bytes (fp, 22); + if (fread (&n_colors, sizeof (uint16_t), 1, fp) != 1) + error ("Couldn't read bitmap colors", fp); + skip_bytes(fp, hdr_size - 34); + + /* + * Repair endianess. + */ + data_offset = le_short(data_offset); + b->width = le_short(b->width); + b->height = le_short(b->height); + n_colors = le_short(n_colors); + size = b->width * b->height; + + /* assume we are working with an 8-bit file */ + if ((n_colors == 0) || (n_colors > 256 - DEFAULT_CMAP_SIZE)) { + /* reserve DEFAULT_CMAP_SIZE color map entries for default map */ + n_colors = 256 - DEFAULT_CMAP_SIZE; + } + + if (mode == MODE_GEN_INFO) { + gen_info(b, n_colors); + goto out; + } + + printf("/*\n" + " * Automatically generated by \"tools/bmp_logo\"\n" + " *\n" + " * DO NOT EDIT\n" + " *\n" + " */\n\n\n" + "#ifndef __BMP_LOGO_DATA_H__\n" + "#define __BMP_LOGO_DATA_H__\n\n"); + + /* read and print the palette information */ + printf("unsigned short bmp_logo_palette[] = {\n"); + + for (i=0; i<n_colors; ++i) { + b->palette[(int)(i*3+2)] = fgetc(fp); + b->palette[(int)(i*3+1)] = fgetc(fp); + b->palette[(int)(i*3+0)] = fgetc(fp); + x=fgetc(fp); + + printf ("%s0x0%X%X%X,%s", + ((i%8) == 0) ? "\t" : " ", + (b->palette[(int)(i*3+0)] >> 4) & 0x0F, + (b->palette[(int)(i*3+1)] >> 4) & 0x0F, + (b->palette[(int)(i*3+2)] >> 4) & 0x0F, + ((i%8) == 7) ? "\n" : "" + ); + } + + /* seek to offset indicated by file header */ + if (mode == MODE_GEN_BMP) { + /* copy full bmp file */ + fseek(fp, 0L, SEEK_END); + size = ftell(fp); + fseek(fp, 0L, SEEK_SET); + } else { + fseek(fp, (long)data_offset, SEEK_SET); + } + + /* allocate memory */ + b->data = (uint8_t *)malloc(size); + if (!b->data) + error("Error allocating memory for file", fp); + + /* read the bitmap; leave room for default color map */ + printf ("\n"); + printf ("};\n"); + printf ("\n"); + printf("unsigned char bmp_logo_bitmap[] = {\n"); + if (mode == MODE_GEN_BMP) { + /* write full bmp */ + for (i = 0; i < size; i++) + b->data[i] = (uint8_t)fgetc(fp); + } else { + for (i = (b->height - 1) * b->width; i >= 0; i -= b->width) { + for (x = 0; x < b->width; x++) { + b->data[i + x] = (uint8_t)fgetc(fp) + + DEFAULT_CMAP_SIZE; + } + } + } + + for (i = 0; i < size; ++i) { + if ((i%8) == 0) + putchar ('\t'); + printf ("0x%02X,%c", + b->data[i], + ((i%8) == 7) ? '\n' : ' ' + ); + } + printf ("\n" + "};\n\n" + "#endif /* __BMP_LOGO_DATA_H__ */\n" + ); + +out: + fclose(fp); + return 0; +} |