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
30 #include <bmp_layout.h>
32 #include <asm/byteorder.h>
36 static int bmp_info (ulong addr);
39 * Allocate and decompress a BMP image using gunzip().
41 * Returns a pointer to the decompressed image data. This pointer is
42 * aligned to 32-bit-aligned-address + 2.
43 * See doc/README.displaying-bmps for explanation.
45 * The allocation address is passed to 'alloc_addr' and must be freed
46 * by the caller after use.
48 * Returns NULL if decompression failed, or if the decompressed data
49 * didn't contain a valid BMP signature.
51 #ifdef CONFIG_VIDEO_BMP_GZIP
52 bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp,
60 * Decompress bmp image
62 len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE;
63 /* allocate extra 3 bytes for 32-bit-aligned-address + 2 alignment */
64 dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE + 3);
66 puts("Error: malloc in gunzip failed!\n");
72 /* align to 32-bit-aligned-address + 2 */
73 bmp = (bmp_image_t *)((((unsigned int)dst + 1) & ~3) + 2);
75 if (gunzip(bmp, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
79 if (len == CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)
80 puts("Image could be truncated"
81 " (increase CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)!\n");
84 * Check for bmp mark 'BM'
86 if (!((bmp->header.signature[0] == 'B') &&
87 (bmp->header.signature[1] == 'M'))) {
92 debug("Gzipped BMP image detected!\n");
98 bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp,
105 static int do_bmp_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
110 case 1: /* use load_addr as default address */
113 case 2: /* use argument */
114 addr = simple_strtoul(argv[1], NULL, 16);
117 return CMD_RET_USAGE;
120 return (bmp_info(addr));
123 static int do_bmp_display(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
129 case 1: /* use load_addr as default address */
132 case 2: /* use argument */
133 addr = simple_strtoul(argv[1], NULL, 16);
136 addr = simple_strtoul(argv[1], NULL, 16);
137 x = simple_strtoul(argv[2], NULL, 10);
138 y = simple_strtoul(argv[3], NULL, 10);
141 return CMD_RET_USAGE;
144 return (bmp_display(addr, x, y));
147 static cmd_tbl_t cmd_bmp_sub[] = {
148 U_BOOT_CMD_MKENT(info, 3, 0, do_bmp_info, "", ""),
149 U_BOOT_CMD_MKENT(display, 5, 0, do_bmp_display, "", ""),
152 #ifdef CONFIG_NEEDS_MANUAL_RELOC
153 void bmp_reloc(void) {
154 fixup_cmdtable(cmd_bmp_sub, ARRAY_SIZE(cmd_bmp_sub));
161 * Description: Handler for 'bmp' command..
163 * Inputs: argv[1] contains the subcommand
168 static int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
172 /* Strip off leading 'bmp' command argument */
176 c = find_cmd_tbl(argv[0], &cmd_bmp_sub[0], ARRAY_SIZE(cmd_bmp_sub));
179 return c->cmd(cmdtp, flag, argc, argv);
181 return CMD_RET_USAGE;
186 "manipulate BMP image data",
187 "info <imageAddr> - display image info\n"
188 "bmp display <imageAddr> [x y] - display image at x,y"
192 * Subroutine: bmp_info
194 * Description: Show information about bmp file in memory
196 * Inputs: addr address of the bmp file
201 static int bmp_info(ulong addr)
203 bmp_image_t *bmp=(bmp_image_t *)addr;
204 void *bmp_alloc_addr = NULL;
207 if (!((bmp->header.signature[0]=='B') &&
208 (bmp->header.signature[1]=='M')))
209 bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
212 printf("There is no valid bmp file at the given address\n");
216 printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
217 le32_to_cpu(bmp->header.height));
218 printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
219 printf("Compression : %d\n", le32_to_cpu(bmp->header.compression));
222 free(bmp_alloc_addr);
228 * Subroutine: bmp_display
230 * Description: Display bmp file located in memory
232 * Inputs: addr address of the bmp file
237 int bmp_display(ulong addr, int x, int y)
240 bmp_image_t *bmp = (bmp_image_t *)addr;
241 void *bmp_alloc_addr = NULL;
244 if (!((bmp->header.signature[0]=='B') &&
245 (bmp->header.signature[1]=='M')))
246 bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
249 printf("There is no valid bmp file at the given address\n");
253 #if defined(CONFIG_LCD)
254 ret = lcd_display_bitmap((ulong)bmp, x, y);
255 #elif defined(CONFIG_VIDEO)
256 ret = video_display_bitmap((unsigned long)bmp, x, y);
258 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
262 free(bmp_alloc_addr);