3 * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * BMP handling routines
29 #include <bmp_layout.h>
31 #include <asm/byteorder.h>
34 static int bmp_info (ulong addr);
35 static int bmp_display (ulong addr, int x, int y);
37 int gunzip(void *, int, unsigned char *, unsigned long *);
40 * Allocate and decompress a BMP image using gunzip().
42 * Returns a pointer to the decompressed image data. Must be freed by
43 * the caller after use.
45 * Returns NULL if decompression failed, or if the decompressed data
46 * didn't contain a valid BMP signature.
48 #ifdef CONFIG_VIDEO_BMP_GZIP
49 static bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
56 * Decompress bmp image
58 len = CFG_VIDEO_LOGO_MAX_SIZE;
59 dst = malloc(CFG_VIDEO_LOGO_MAX_SIZE);
61 puts("Error: malloc in gunzip failed!\n");
64 if (gunzip(dst, CFG_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
68 if (len == CFG_VIDEO_LOGO_MAX_SIZE)
69 puts("Image could be truncated"
70 " (increase CFG_VIDEO_LOGO_MAX_SIZE)!\n");
75 * Check for bmp mark 'BM'
77 if (!((bmp->header.signature[0] == 'B') &&
78 (bmp->header.signature[1] == 'M'))) {
83 puts("Gzipped BMP image detected!\n");
88 static bmp_image_t *gunzip_bmp(unsigned long addr)
98 * Description: Handler for 'bmp' command..
100 * Inputs: argv[1] contains the subcommand
105 int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
111 case 2: /* use load_addr as default address */
114 case 3: /* use argument */
115 addr = simple_strtoul(argv[2], NULL, 16);
118 addr = simple_strtoul(argv[2], NULL, 16);
119 x = simple_strtoul(argv[3], NULL, 10);
120 y = simple_strtoul(argv[4], NULL, 10);
123 printf ("Usage:\n%s\n", cmdtp->usage);
127 /* Allow for short names
128 * Adjust length if more sub-commands get added
130 if (strncmp(argv[1],"info",1) == 0) {
131 return (bmp_info(addr));
132 } else if (strncmp(argv[1],"display",1) == 0) {
133 return (bmp_display(addr, x, y));
135 printf ("Usage:\n%s\n", cmdtp->usage);
142 "bmp - manipulate BMP image data\n",
143 "info <imageAddr> - display image info\n"
144 "bmp display <imageAddr> [x y] - display image at x,y\n"
148 * Subroutine: bmp_info
150 * Description: Show information about bmp file in memory
152 * Inputs: addr address of the bmp file
157 static int bmp_info(ulong addr)
159 bmp_image_t *bmp=(bmp_image_t *)addr;
162 if (!((bmp->header.signature[0]=='B') &&
163 (bmp->header.signature[1]=='M')))
164 bmp = gunzip_bmp(addr, &len);
167 printf("There is no valid bmp file at the given address\n");
171 printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
172 le32_to_cpu(bmp->header.height));
173 printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
174 printf("Compression : %d\n", le32_to_cpu(bmp->header.compression));
176 if ((unsigned long)bmp != addr)
183 * Subroutine: bmp_display
185 * Description: Display bmp file located in memory
187 * Inputs: addr address of the bmp file
192 static int bmp_display(ulong addr, int x, int y)
195 bmp_image_t *bmp = (bmp_image_t *)addr;
198 if (!((bmp->header.signature[0]=='B') &&
199 (bmp->header.signature[1]=='M')))
200 bmp = gunzip_bmp(addr, &len);
203 printf("There is no valid bmp file at the given address\n");
207 #if defined(CONFIG_LCD)
208 extern int lcd_display_bitmap (ulong, int, int);
210 ret = lcd_display_bitmap ((unsigned long)bmp, x, y);
211 #elif defined(CONFIG_VIDEO)
212 extern int video_display_bitmap (ulong, int, int);
214 ret = video_display_bitmap ((unsigned long)bmp, x, y);
216 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
219 if ((unsigned long)bmp != addr)