1aa6b043d6a27fcdf15c5da2040dd6348c659910
[libam7xxx.git] / src / picoproj.c
1 /* picoproj - test program for libam7xxx
2  *
3  * Copyright (C) 2012  Antonio Ospite <ospite@studenti.unina.it>
4  *
5  * This program is free software: you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation, either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
17  */
18
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
22 #include <sys/mman.h>
23 #include <sys/types.h>
24 #include <sys/stat.h>
25 #include <fcntl.h>
26 #include <unistd.h>
27
28 #include "am7xxx.h"
29
30 static void usage(char *name)
31 {
32         printf("usage: %s [OPTIONS]\n\n", name);
33         printf("OPTIONS:\n");
34         printf("\t-f <filename>\t\tthe image file to upload\n");
35         printf("\t-F <format>\t\tthe image format to use (default is JPEG).\n");
36         printf("\t\t\t\tSUPPORTED FORMATS:\n");
37         printf("\t\t\t\t\t1 - JPEG\n");
38         printf("\t\t\t\t\t2 - YUV - NV12\n");
39         printf("\t-W <image width>\tthe width of the image to upload\n");
40         printf("\t-H <image height>\tthe height of the image to upload\n");
41         printf("\t-h \t\t\tthis help message\n");
42 }
43
44 int main(int argc, char *argv[])
45 {
46         int ret;
47         int exit_code = EXIT_SUCCESS;
48         int opt;
49
50         char filename[FILENAME_MAX] = {0};
51         int image_fd;
52         struct stat st;
53         am7xxx_device dev;
54         int format = AM7XXX_IMAGE_FORMAT_JPEG;
55         int width = 800;
56         int height = 480;
57         uint8_t *image;
58         unsigned int size;
59
60         while ((opt = getopt(argc, argv, "f:F:W:H:h")) != -1) {
61                 switch (opt) {
62                 case 'f':
63                         strncpy(filename, optarg, FILENAME_MAX);
64                         break;
65                 case 'F':
66                         format = atoi(optarg);
67                         switch(format) {
68                         case AM7XXX_IMAGE_FORMAT_JPEG:
69                                 fprintf(stdout, "JPEG format\n");
70                                 break;
71                         case AM7XXX_IMAGE_FORMAT_NV12:
72                                 fprintf(stdout, "NV12 format\n");
73                                 break;
74                         default:
75                                 fprintf(stderr, "Unsupported format\n");
76                                 exit(EXIT_FAILURE);
77                         }
78                         break;
79                 case 'W':
80                         width = atoi(optarg);
81                         if (width < 0) {
82                                 fprintf(stderr, "Unsupported width\n");
83                                 exit(EXIT_FAILURE);
84                         }
85                         break;
86                 case 'H':
87                         height = atoi(optarg);
88                         if (height < 0) {
89                                 fprintf(stderr, "Unsupported height\n");
90                                 exit(EXIT_FAILURE);
91                         }
92                         break;
93                 case 'h':
94                         usage(argv[0]);
95                         exit(EXIT_SUCCESS);
96                         break;
97                 default: /* '?' */
98                         usage(argv[0]);
99                         exit(EXIT_FAILURE);
100                 }
101         }
102
103         if (filename[0] == '\0') {
104                 fprintf(stderr, "An image file MUST be specified.\n");
105                 exit_code = EXIT_FAILURE;
106                 goto out;
107         }
108
109         image_fd = open(filename, O_RDONLY);
110         if (image_fd < 0) {
111                 perror("open");
112                 exit_code = EXIT_FAILURE;
113                 goto out;
114         }
115         if (fstat(image_fd, &st) < 0) {
116                 perror("fstat");
117                 exit_code = EXIT_FAILURE;
118                 goto out_close_image_fd;
119         }
120         size = st.st_size;
121
122         image = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, image_fd, 0);
123         if (image == NULL) {
124                 perror("mmap");
125                 exit_code = EXIT_FAILURE;
126                 goto out_close_image_fd;
127         }
128
129         dev = am7xxx_init();
130         if (dev == NULL) {
131                 perror("am7xxx_init");
132                 exit_code = EXIT_FAILURE;
133                 goto out_munmap;
134         }
135
136         ret = am7xxx_set_power_mode(dev, AM7XXX_POWER_LOW);
137         if (ret < 0) {
138                 perror("am7xxx_set_power_mode");
139                 exit_code = EXIT_FAILURE;
140                 goto cleanup;
141         }
142
143         ret = am7xxx_send_image(dev, format, width, height, image, size);
144         if (ret < 0) {
145                 perror("am7xxx_send_image");
146                 exit_code = EXIT_FAILURE;
147                 goto cleanup;
148         }
149
150         exit_code = EXIT_SUCCESS;
151
152 cleanup:
153         am7xxx_shutdown(dev);
154
155 out_munmap:
156         ret = munmap(image, size);
157         if (ret < 0)
158                 perror("munmap");
159
160 out_close_image_fd:
161         ret = close(image_fd);
162         if (ret < 0)
163                 perror("close");
164
165 out:
166         exit(exit_code);
167 }