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>
35 static int bmp_info (ulong addr);
36 static int bmp_display (ulong addr, int x, int y);
39 * Allocate and decompress a BMP image using gunzip().
41 * Returns a pointer to the decompressed image data. Must be freed by
42 * the caller after use.
44 * Returns NULL if decompression failed, or if the decompressed data
45 * didn't contain a valid BMP signature.
47 #ifdef CONFIG_VIDEO_BMP_GZIP
48 bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
55 * Decompress bmp image
57 len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE;
58 dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE);
60 puts("Error: malloc in gunzip failed!\n");
63 if (gunzip(dst, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
67 if (len == CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)
68 puts("Image could be truncated"
69 " (increase CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)!\n");
74 * Check for bmp mark 'BM'
76 if (!((bmp->header.signature[0] == 'B') &&
77 (bmp->header.signature[1] == 'M'))) {
82 puts("Gzipped BMP image detected!\n");
87 bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
97 * Description: Handler for 'bmp' command..
99 * Inputs: argv[1] contains the subcommand
104 int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
110 case 2: /* use load_addr as default address */
113 case 3: /* use argument */
114 addr = simple_strtoul(argv[2], NULL, 16);
117 addr = simple_strtoul(argv[2], NULL, 16);
118 x = simple_strtoul(argv[3], NULL, 10);
119 y = simple_strtoul(argv[4], NULL, 10);
126 /* Allow for short names
127 * Adjust length if more sub-commands get added
129 if (strncmp(argv[1],"info",1) == 0) {
130 return (bmp_info(addr));
131 } else if (strncmp(argv[1],"display",1) == 0) {
132 return (bmp_display(addr, x, y));
141 "manipulate BMP image data",
142 "info <imageAddr> - display image info\n"
143 "bmp display <imageAddr> [x y] - display image at x,y"
147 * Subroutine: bmp_info
149 * Description: Show information about bmp file in memory
151 * Inputs: addr address of the bmp file
156 static int bmp_info(ulong addr)
158 bmp_image_t *bmp=(bmp_image_t *)addr;
161 if (!((bmp->header.signature[0]=='B') &&
162 (bmp->header.signature[1]=='M')))
163 bmp = gunzip_bmp(addr, &len);
166 printf("There is no valid bmp file at the given address\n");
170 printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
171 le32_to_cpu(bmp->header.height));
172 printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
173 printf("Compression : %d\n", le32_to_cpu(bmp->header.compression));
175 if ((unsigned long)bmp != addr)
182 * Subroutine: bmp_display
184 * Description: Display bmp file located in memory
186 * Inputs: addr address of the bmp file
191 static int bmp_display(ulong addr, int x, int y)
194 bmp_image_t *bmp = (bmp_image_t *)addr;
197 if (!((bmp->header.signature[0]=='B') &&
198 (bmp->header.signature[1]=='M')))
199 bmp = gunzip_bmp(addr, &len);
202 printf("There is no valid bmp file at the given address\n");
206 #if defined(CONFIG_LCD)
207 extern int lcd_display_bitmap (ulong, int, int);
209 ret = lcd_display_bitmap ((unsigned long)bmp, x, y);
210 #elif defined(CONFIG_VIDEO)
211 extern int video_display_bitmap (ulong, int, int);
213 ret = video_display_bitmap ((unsigned long)bmp, x, y);
215 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
218 if ((unsigned long)bmp != addr)