source: SVN/rincon/u-boot/common/cmd_bmp.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 2 years ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 5.0 KB
Line 
1/*
2 * (C) Copyright 2002
3 * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24/*
25 * BMP handling routines
26 */
27
28#include <common.h>
29#include <bmp_layout.h>
30#include <command.h>
31#include <asm/byteorder.h>
32#include <malloc.h>
33
34static int bmp_info (ulong addr);
35static int bmp_display (ulong addr, int x, int y);
36
37int gunzip(void *, int, unsigned char *, unsigned long *);
38
39/*
40 * Allocate and decompress a BMP image using gunzip().
41 *
42 * Returns a pointer to the decompressed image data. Must be freed by
43 * the caller after use.
44 *
45 * Returns NULL if decompression failed, or if the decompressed data
46 * didn't contain a valid BMP signature.
47 */
48#ifdef CONFIG_VIDEO_BMP_GZIP
49static bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
50{
51        void *dst;
52        unsigned long len;
53        bmp_image_t *bmp;
54
55        /*
56         * Decompress bmp image
57         */
58        len = CFG_VIDEO_LOGO_MAX_SIZE;
59        dst = malloc(CFG_VIDEO_LOGO_MAX_SIZE);
60        if (dst == NULL) {
61                puts("Error: malloc in gunzip failed!\n");
62                return NULL;
63        }
64        if (gunzip(dst, CFG_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
65                free(dst);
66                return NULL;
67        }
68        if (len == CFG_VIDEO_LOGO_MAX_SIZE)
69                puts("Image could be truncated"
70                                " (increase CFG_VIDEO_LOGO_MAX_SIZE)!\n");
71
72        bmp = dst;
73
74        /*
75         * Check for bmp mark 'BM'
76         */
77        if (!((bmp->header.signature[0] == 'B') &&
78              (bmp->header.signature[1] == 'M'))) {
79                free(dst);
80                return NULL;
81        }
82
83        puts("Gzipped BMP image detected!\n");
84
85        return bmp;
86}
87#else
88static bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
89{
90        return NULL;
91}
92#endif
93
94
95/*
96 * Subroutine:  do_bmp
97 *
98 * Description: Handler for 'bmp' command..
99 *
100 * Inputs:      argv[1] contains the subcommand
101 *
102 * Return:      None
103 *
104 */
105int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
106{
107        ulong addr;
108        int x = 0, y = 0;
109
110        switch (argc) {
111        case 2:         /* use load_addr as default address */
112                addr = load_addr;
113                break;
114        case 3:         /* use argument */
115                addr = simple_strtoul(argv[2], NULL, 16);
116                break;
117        case 5:
118                addr = simple_strtoul(argv[2], NULL, 16);
119                x = simple_strtoul(argv[3], NULL, 10);
120                y = simple_strtoul(argv[4], NULL, 10);
121                break;
122        default:
123                printf ("Usage:\n%s\n", cmdtp->usage);
124                return 1;
125        }
126
127        /* Allow for short names
128         * Adjust length if more sub-commands get added
129         */
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));
134        } else {
135                printf ("Usage:\n%s\n", cmdtp->usage);
136                return 1;
137        }
138}
139
140U_BOOT_CMD(
141        bmp,    5,      1,      do_bmp,
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"
145);
146
147/*
148 * Subroutine:  bmp_info
149 *
150 * Description: Show information about bmp file in memory
151 *
152 * Inputs:      addr            address of the bmp file
153 *
154 * Return:      None
155 *
156 */
157static int bmp_info(ulong addr)
158{
159        bmp_image_t *bmp=(bmp_image_t *)addr;
160        unsigned long len;
161
162        if (!((bmp->header.signature[0]=='B') &&
163              (bmp->header.signature[1]=='M')))
164                bmp = gunzip_bmp(addr, &len);
165
166        if (bmp == NULL) {
167                printf("There is no valid bmp file at the given address\n");
168                return 1;
169        }
170
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));
175
176        if ((unsigned long)bmp != addr)
177                free(bmp);
178
179        return(0);
180}
181
182/*
183 * Subroutine:  bmp_display
184 *
185 * Description: Display bmp file located in memory
186 *
187 * Inputs:      addr            address of the bmp file
188 *
189 * Return:      None
190 *
191 */
192static int bmp_display(ulong addr, int x, int y)
193{
194        int ret;
195        bmp_image_t *bmp = (bmp_image_t *)addr;
196        unsigned long len;
197
198        if (!((bmp->header.signature[0]=='B') &&
199              (bmp->header.signature[1]=='M')))
200                bmp = gunzip_bmp(addr, &len);
201
202        if (!bmp) {
203                printf("There is no valid bmp file at the given address\n");
204                return 1;
205        }
206
207#if defined(CONFIG_LCD)
208        extern int lcd_display_bitmap (ulong, int, int);
209
210        ret = lcd_display_bitmap ((unsigned long)bmp, x, y);
211#elif defined(CONFIG_VIDEO)
212        extern int video_display_bitmap (ulong, int, int);
213
214        ret = video_display_bitmap ((unsigned long)bmp, x, y);
215#else
216# error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
217#endif
218
219        if ((unsigned long)bmp != addr)
220                free(bmp);
221
222        return ret;
223}
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