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);
38 int gunzip(void *, int, unsigned char *, unsigned long *);
41 * Allocate and decompress a BMP image using gunzip().
43 * Returns a pointer to the decompressed image data. Must be freed by
44 * the caller after use.
46 * Returns NULL if decompression failed, or if the decompressed data
47 * didn't contain a valid BMP signature.
49 #ifdef CONFIG_VIDEO_BMP_GZIP
50 bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
57 * Decompress bmp image
59 len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE;
60 dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE);
62 puts("Error: malloc in gunzip failed!\n");
65 if (gunzip(dst, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
69 if (len == CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)
70 puts("Image could be truncated"
71 " (increase CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)!\n");
76 * Check for bmp mark 'BM'
78 if (!((bmp->header.signature[0] == 'B') &&
79 (bmp->header.signature[1] == 'M'))) {
84 puts("Gzipped BMP image detected!\n");
89 bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
99 * Description: Handler for 'bmp' command..
101 * Inputs: argv[1] contains the subcommand
106 int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
112 case 2: /* use load_addr as default address */
115 case 3: /* use argument */
116 addr = simple_strtoul(argv[2], NULL, 16);
119 addr = simple_strtoul(argv[2], NULL, 16);
120 x = simple_strtoul(argv[3], NULL, 10);
121 y = simple_strtoul(argv[4], NULL, 10);
128 /* Allow for short names
129 * Adjust length if more sub-commands get added
131 if (strncmp(argv[1],"info",1) == 0) {
132 return (bmp_info(addr));
133 } else if (strncmp(argv[1],"display",1) == 0) {
134 return (bmp_display(addr, x, y));
143 "manipulate BMP image data",
144 "info <imageAddr> - display image info\n"
145 "bmp display <imageAddr> [x y] - display image at x,y"
149 * Subroutine: bmp_info
151 * Description: Show information about bmp file in memory
153 * Inputs: addr address of the bmp file
158 static int bmp_info(ulong addr)
160 bmp_image_t *bmp=(bmp_image_t *)addr;
163 if (!((bmp->header.signature[0]=='B') &&
164 (bmp->header.signature[1]=='M')))
165 bmp = gunzip_bmp(addr, &len);
168 printf("There is no valid bmp file at the given address\n");
172 printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
173 le32_to_cpu(bmp->header.height));
174 printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
175 printf("Compression : %d\n", le32_to_cpu(bmp->header.compression));
177 if ((unsigned long)bmp != addr)
184 * Subroutine: bmp_display
186 * Description: Display bmp file located in memory
188 * Inputs: addr address of the bmp file
193 static int bmp_display(ulong addr, int x, int y)
196 bmp_image_t *bmp = (bmp_image_t *)addr;
199 if (!((bmp->header.signature[0]=='B') &&
200 (bmp->header.signature[1]=='M')))
201 bmp = gunzip_bmp(addr, &len);
204 printf("There is no valid bmp file at the given address\n");
208 #if defined(CONFIG_LCD)
209 extern int lcd_display_bitmap (ulong, int, int);
211 ret = lcd_display_bitmap ((unsigned long)bmp, x, y);
212 #elif defined(CONFIG_VIDEO)
213 extern int video_display_bitmap (ulong, int, int);
215 ret = video_display_bitmap ((unsigned long)bmp, x, y);
217 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
220 if ((unsigned long)bmp != addr)