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https://github.com/brain-hackers/u-boot-brain
synced 2024-08-27 12:28:52 +09:00
![Heiko Schocher](/assets/img/avatar_default.png)
in case of bmp_logo, the video_bmp driver is used for drawing a bmp logo. This driver supports only "full" bmp data. Adding a logo with the bmp_logo tool to u-boot binary adds currently only real data and drops the bmp header. This patch adds now the full bmp data to the u-boot binary, so video_bmp driver works with the logo embedded into u-boot. Fixed also some checkpatch error poping up with this patch. Signed-off-by: Heiko Schocher <hs@denx.de>
229 lines
4.9 KiB
C
229 lines
4.9 KiB
C
#include "compiler.h"
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enum {
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MODE_GEN_INFO,
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MODE_GEN_DATA,
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MODE_GEN_BMP
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};
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typedef struct bitmap_s { /* bitmap description */
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uint16_t width;
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uint16_t height;
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uint8_t palette[256*3];
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uint8_t *data;
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} bitmap_t;
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#define DEFAULT_CMAP_SIZE 16 /* size of default color map */
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void usage(const char *prog)
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{
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fprintf(stderr, "Usage: %s [--gen-info|--gen-data|--gen-bmp] file\n",
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prog);
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}
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/*
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* Neutralize little endians.
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*/
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uint16_t le_short(uint16_t x)
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{
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uint16_t val;
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uint8_t *p = (uint8_t *)(&x);
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val = (*p++ & 0xff) << 0;
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val |= (*p & 0xff) << 8;
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return val;
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}
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void skip_bytes (FILE *fp, int n)
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{
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while (n-- > 0)
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fgetc (fp);
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}
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__attribute__ ((__noreturn__))
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int error (char * msg, FILE *fp)
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{
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fprintf (stderr, "ERROR: %s\n", msg);
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fclose (fp);
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exit (EXIT_FAILURE);
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}
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void gen_info(bitmap_t *b, uint16_t n_colors)
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{
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printf("/*\n"
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" * Automatically generated by \"tools/bmp_logo\"\n"
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" *\n"
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" * DO NOT EDIT\n"
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" *\n"
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" */\n\n\n"
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"#ifndef __BMP_LOGO_H__\n"
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"#define __BMP_LOGO_H__\n\n"
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"#define BMP_LOGO_WIDTH\t\t%d\n"
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"#define BMP_LOGO_HEIGHT\t\t%d\n"
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"#define BMP_LOGO_COLORS\t\t%d\n"
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"#define BMP_LOGO_OFFSET\t\t%d\n\n"
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"extern unsigned short bmp_logo_palette[];\n"
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"extern unsigned char bmp_logo_bitmap[];\n\n"
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"#endif /* __BMP_LOGO_H__ */\n",
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b->width, b->height, n_colors,
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DEFAULT_CMAP_SIZE);
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}
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int main (int argc, char *argv[])
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{
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int mode, i, x;
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int size;
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FILE *fp;
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bitmap_t bmp;
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bitmap_t *b = &bmp;
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uint16_t data_offset, n_colors, hdr_size;
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if (argc < 3) {
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usage(argv[0]);
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exit (EXIT_FAILURE);
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}
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if (!strcmp(argv[1], "--gen-info"))
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mode = MODE_GEN_INFO;
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else if (!strcmp(argv[1], "--gen-data"))
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mode = MODE_GEN_DATA;
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else if (!strcmp(argv[1], "--gen-bmp"))
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mode = MODE_GEN_BMP;
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else {
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usage(argv[0]);
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exit(EXIT_FAILURE);
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}
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fp = fopen(argv[2], "rb");
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if (!fp) {
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perror(argv[2]);
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exit (EXIT_FAILURE);
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}
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if (fgetc (fp) != 'B' || fgetc (fp) != 'M')
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error ("Input file is not a bitmap", fp);
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/*
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* read width and height of the image, and the number of colors used;
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* ignore the rest
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*/
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skip_bytes (fp, 8);
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if (fread (&data_offset, sizeof (uint16_t), 1, fp) != 1)
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error ("Couldn't read bitmap data offset", fp);
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skip_bytes(fp, 2);
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if (fread(&hdr_size, sizeof(uint16_t), 1, fp) != 1)
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error("Couldn't read bitmap header size", fp);
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if (hdr_size < 40)
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error("Invalid bitmap header", fp);
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skip_bytes(fp, 2);
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if (fread (&b->width, sizeof (uint16_t), 1, fp) != 1)
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error ("Couldn't read bitmap width", fp);
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skip_bytes (fp, 2);
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if (fread (&b->height, sizeof (uint16_t), 1, fp) != 1)
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error ("Couldn't read bitmap height", fp);
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skip_bytes (fp, 22);
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if (fread (&n_colors, sizeof (uint16_t), 1, fp) != 1)
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error ("Couldn't read bitmap colors", fp);
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skip_bytes(fp, hdr_size - 34);
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/*
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* Repair endianess.
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*/
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data_offset = le_short(data_offset);
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b->width = le_short(b->width);
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b->height = le_short(b->height);
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n_colors = le_short(n_colors);
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size = b->width * b->height;
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/* assume we are working with an 8-bit file */
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if ((n_colors == 0) || (n_colors > 256 - DEFAULT_CMAP_SIZE)) {
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/* reserve DEFAULT_CMAP_SIZE color map entries for default map */
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n_colors = 256 - DEFAULT_CMAP_SIZE;
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}
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if (mode == MODE_GEN_INFO) {
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gen_info(b, n_colors);
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goto out;
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}
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printf("/*\n"
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" * Automatically generated by \"tools/bmp_logo\"\n"
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" *\n"
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" * DO NOT EDIT\n"
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" *\n"
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" */\n\n\n"
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"#ifndef __BMP_LOGO_DATA_H__\n"
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"#define __BMP_LOGO_DATA_H__\n\n");
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/* read and print the palette information */
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printf("unsigned short bmp_logo_palette[] = {\n");
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for (i=0; i<n_colors; ++i) {
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b->palette[(int)(i*3+2)] = fgetc(fp);
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b->palette[(int)(i*3+1)] = fgetc(fp);
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b->palette[(int)(i*3+0)] = fgetc(fp);
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x=fgetc(fp);
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printf ("%s0x0%X%X%X,%s",
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((i%8) == 0) ? "\t" : " ",
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(b->palette[(int)(i*3+0)] >> 4) & 0x0F,
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(b->palette[(int)(i*3+1)] >> 4) & 0x0F,
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(b->palette[(int)(i*3+2)] >> 4) & 0x0F,
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((i%8) == 7) ? "\n" : ""
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);
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}
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/* seek to offset indicated by file header */
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if (mode == MODE_GEN_BMP) {
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/* copy full bmp file */
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fseek(fp, 0L, SEEK_END);
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size = ftell(fp);
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fseek(fp, 0L, SEEK_SET);
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} else {
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fseek(fp, (long)data_offset, SEEK_SET);
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}
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/* allocate memory */
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b->data = (uint8_t *)malloc(size);
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if (!b->data)
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error("Error allocating memory for file", fp);
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/* read the bitmap; leave room for default color map */
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printf ("\n");
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printf ("};\n");
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printf ("\n");
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printf("unsigned char bmp_logo_bitmap[] = {\n");
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if (mode == MODE_GEN_BMP) {
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/* write full bmp */
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for (i = 0; i < size; i++)
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b->data[i] = (uint8_t)fgetc(fp);
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} else {
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for (i = (b->height - 1) * b->width; i >= 0; i -= b->width) {
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for (x = 0; x < b->width; x++) {
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b->data[i + x] = (uint8_t)fgetc(fp)
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+ DEFAULT_CMAP_SIZE;
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}
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}
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}
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for (i = 0; i < size; ++i) {
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if ((i%8) == 0)
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putchar ('\t');
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printf ("0x%02X,%c",
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b->data[i],
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((i%8) == 7) ? '\n' : ' '
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);
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}
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printf ("\n"
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"};\n\n"
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"#endif /* __BMP_LOGO_DATA_H__ */\n"
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);
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out:
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fclose(fp);
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return 0;
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}
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