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 #if (CONFIG_COMMANDS & CFG_CMD_BMP) || defined(CONFIG_CMD_BMP)
36 static int bmp_info (ulong addr);
37 static int bmp_display (ulong addr, int x, int y);
39 int gunzip(void *, int, unsigned char *, unsigned long *);
44 * Description: Handler for 'bmp' command..
46 * Inputs: argv[1] contains the subcommand
51 int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
57 case 2: /* use load_addr as default address */
60 case 3: /* use argument */
61 addr = simple_strtoul(argv[2], NULL, 16);
64 addr = simple_strtoul(argv[2], NULL, 16);
65 x = simple_strtoul(argv[3], NULL, 10);
66 y = simple_strtoul(argv[4], NULL, 10);
69 printf ("Usage:\n%s\n", cmdtp->usage);
73 /* Allow for short names
74 * Adjust length if more sub-commands get added
76 if (strncmp(argv[1],"info",1) == 0) {
77 return (bmp_info(addr));
78 } else if (strncmp(argv[1],"display",1) == 0) {
79 return (bmp_display(addr, x, y));
81 printf ("Usage:\n%s\n", cmdtp->usage);
88 "bmp - manipulate BMP image data\n",
89 "info <imageAddr> - display image info\n"
90 "bmp display <imageAddr> [x y] - display image at x,y\n"
94 * Subroutine: bmp_info
96 * Description: Show information about bmp file in memory
98 * Inputs: addr address of the bmp file
103 static int bmp_info(ulong addr)
105 bmp_image_t *bmp=(bmp_image_t *)addr;
106 #ifdef CONFIG_VIDEO_BMP_GZIP
107 unsigned char *dst = NULL;
109 #endif /* CONFIG_VIDEO_BMP_GZIP */
111 if (!((bmp->header.signature[0]=='B') &&
112 (bmp->header.signature[1]=='M'))) {
114 #ifdef CONFIG_VIDEO_BMP_GZIP
116 * Decompress bmp image
118 len = CFG_VIDEO_LOGO_MAX_SIZE;
119 dst = malloc(CFG_VIDEO_LOGO_MAX_SIZE);
121 printf("Error: malloc in gunzip failed!\n");
124 if (gunzip(dst, CFG_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
125 printf("There is no valid bmp file at the given address\n");
128 if (len == CFG_VIDEO_LOGO_MAX_SIZE) {
129 printf("Image could be truncated (increase CFG_VIDEO_LOGO_MAX_SIZE)!\n");
133 * Set addr to decompressed image
135 bmp = (bmp_image_t *)dst;
138 * Check for bmp mark 'BM'
140 if (!((bmp->header.signature[0] == 'B') &&
141 (bmp->header.signature[1] == 'M'))) {
142 printf("There is no valid bmp file at the given address\n");
147 printf("Gzipped BMP image detected!\n");
148 #else /* CONFIG_VIDEO_BMP_GZIP */
149 printf("There is no valid bmp file at the given address\n");
151 #endif /* CONFIG_VIDEO_BMP_GZIP */
153 printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
154 le32_to_cpu(bmp->header.height));
155 printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
156 printf("Compression : %d\n", le32_to_cpu(bmp->header.compression));
158 #ifdef CONFIG_VIDEO_BMP_GZIP
162 #endif /* CONFIG_VIDEO_BMP_GZIP */
168 * Subroutine: bmp_display
170 * Description: Display bmp file located in memory
172 * Inputs: addr address of the bmp file
177 static int bmp_display(ulong addr, int x, int y)
179 #if defined(CONFIG_LCD)
180 extern int lcd_display_bitmap (ulong, int, int);
182 return (lcd_display_bitmap (addr, x, y));
183 #elif defined(CONFIG_VIDEO)
184 extern int video_display_bitmap (ulong, int, int);
185 return (video_display_bitmap (addr, x, y));
187 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
191 #endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) || defined(CONFIG_CMD_BMP) */