1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/*
* (C) Copyright 2002
* Detlev Zundel, DENX Software Engineering, dzu@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* BMP handling routines
*/
#include <common.h>
#include <bmp_layout.h>
#include <command.h>
#include <asm/byteorder.h>
#include <malloc.h>
static int bmp_info (ulong addr);
static int bmp_display (ulong addr, int x, int y);
int gunzip(void *, int, unsigned char *, unsigned long *);
/*
* Allocate and decompress a BMP image using gunzip().
*
* Returns a pointer to the decompressed image data. Must be freed by
* the caller after use.
*
* Returns NULL if decompression failed, or if the decompressed data
* didn't contain a valid BMP signature.
*/
#ifdef CONFIG_VIDEO_BMP_GZIP
static bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
{
void *dst;
unsigned long len;
bmp_image_t *bmp;
/*
* Decompress bmp image
*/
len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE;
dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE);
if (dst == NULL) {
puts("Error: malloc in gunzip failed!\n");
return NULL;
}
if (gunzip(dst, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
free(dst);
return NULL;
}
if (len == CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)
puts("Image could be truncated"
" (increase CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)!\n");
bmp = dst;
/*
* Check for bmp mark 'BM'
*/
if (!((bmp->header.signature[0] == 'B') &&
(bmp->header.signature[1] == 'M'))) {
free(dst);
return NULL;
}
puts("Gzipped BMP image detected!\n");
return bmp;
}
#else
static bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
{
return NULL;
}
#endif
/*
* Subroutine: do_bmp
*
* Description: Handler for 'bmp' command..
*
* Inputs: argv[1] contains the subcommand
*
* Return: None
*
*/
int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
ulong addr;
int x = 0, y = 0;
switch (argc) {
case 2: /* use load_addr as default address */
addr = load_addr;
break;
case 3: /* use argument */
addr = simple_strtoul(argv[2], NULL, 16);
break;
case 5:
addr = simple_strtoul(argv[2], NULL, 16);
x = simple_strtoul(argv[3], NULL, 10);
y = simple_strtoul(argv[4], NULL, 10);
break;
default:
cmd_usage(cmdtp);
return 1;
}
/* Allow for short names
* Adjust length if more sub-commands get added
*/
if (strncmp(argv[1],"info",1) == 0) {
return (bmp_info(addr));
} else if (strncmp(argv[1],"display",1) == 0) {
return (bmp_display(addr, x, y));
} else {
cmd_usage(cmdtp);
return 1;
}
}
U_BOOT_CMD(
bmp, 5, 1, do_bmp,
"manipulate BMP image data",
"info <imageAddr> - display image info\n"
"bmp display <imageAddr> [x y] - display image at x,y\n"
);
/*
* Subroutine: bmp_info
*
* Description: Show information about bmp file in memory
*
* Inputs: addr address of the bmp file
*
* Return: None
*
*/
static int bmp_info(ulong addr)
{
bmp_image_t *bmp=(bmp_image_t *)addr;
unsigned long len;
if (!((bmp->header.signature[0]=='B') &&
(bmp->header.signature[1]=='M')))
bmp = gunzip_bmp(addr, &len);
if (bmp == NULL) {
printf("There is no valid bmp file at the given address\n");
return 1;
}
printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
le32_to_cpu(bmp->header.height));
printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
printf("Compression : %d\n", le32_to_cpu(bmp->header.compression));
if ((unsigned long)bmp != addr)
free(bmp);
return(0);
}
/*
* Subroutine: bmp_display
*
* Description: Display bmp file located in memory
*
* Inputs: addr address of the bmp file
*
* Return: None
*
*/
static int bmp_display(ulong addr, int x, int y)
{
int ret;
bmp_image_t *bmp = (bmp_image_t *)addr;
unsigned long len;
if (!((bmp->header.signature[0]=='B') &&
(bmp->header.signature[1]=='M')))
bmp = gunzip_bmp(addr, &len);
if (!bmp) {
printf("There is no valid bmp file at the given address\n");
return 1;
}
#if defined(CONFIG_LCD)
extern int lcd_display_bitmap (ulong, int, int);
ret = lcd_display_bitmap ((unsigned long)bmp, x, y);
#elif defined(CONFIG_VIDEO)
extern int video_display_bitmap (ulong, int, int);
ret = video_display_bitmap ((unsigned long)bmp, x, y);
#else
# error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
#endif
if ((unsigned long)bmp != addr)
free(bmp);
return ret;
}
|
