picoproj.c

   1 /* picoproj - test program for libam7xxx
   2  *
   3  * Copyright (C) 2011  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 3 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-W <image width>\tthe width of the image to upload\n");
  39         printf("\t-H <image height>\tthe height of the image to upload\n");
  40         printf("\t-h \t\t\tthis help message\n");
  41 }
  42
  43 int main(int argc, char *argv[])
  44 {
  45         int ret;
  46         int exit_code = EXIT_SUCCESS;
  47         int opt;
  48
  49         char filename[FILENAME_MAX] = {0};
  50         int image_fd = -1;
  51         am7xxx_device dev;
  52         int format = AM7XXX_IMAGE_FORMAT_JPEG;
  53         int width = 800;
  54         int height = 480;
  55         uint8_t *image = NULL;
  56         unsigned int size = 59475;
  57
  58         while ((opt = getopt(argc, argv, "f:F:W:H:h")) != -1) {
  59                 switch (opt) {
  60                 case 'f':
  61                         strncpy(filename, optarg, FILENAME_MAX);
  62                         break;
  63                 case 'F':
  64                         format = atoi(optarg);
  65                         if (format != 1) {
  66                                 fprintf(stderr, "Unsupported format\n");
  67                                 exit(EXIT_FAILURE);
  68                         }
  69                         break;
  70                 case 'W':
  71                         width = atoi(optarg);
  72                         if (width < 0) {
  73                                 fprintf(stderr, "Unsupported width\n");
  74                                 exit(EXIT_FAILURE);
  75                         }
  76                         break;
  77                 case 'H':
  78                         height = atoi(optarg);
  79                         if (height < 0) {
  80                                 fprintf(stderr, "Unsupported height\n");
  81                                 exit(EXIT_FAILURE);
  82                         }
  83                         break;
  84                 default: /* '?' */
  85                         usage(argv[0]);
  86                         exit(EXIT_FAILURE);
  87                 }
  88         }
  89
  90         if (filename[0] != '\0') {
  91                 struct stat st;
  92
  93                 image_fd = open(filename, O_RDONLY);
  94                 if (image_fd < 0) {
  95                         perror("open");
  96                         exit_code = EXIT_FAILURE;
  97                         goto out;
  98                 }
  99                 if (fstat(image_fd, &st) < 0) {
 100                         perror("fstat");
 101                         exit_code = EXIT_FAILURE;
 102                         goto out_close_image_fd;
 103                 }
 104                 size = st.st_size;
 105
 106                 image = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, image_fd, 0);
 107                 if (image == NULL) {
 108                         perror("mmap");
 109                         exit_code = EXIT_FAILURE;
 110                         goto out_close_image_fd;
 111                 }
 112         }
 113
 114         dev = am7xxx_init();
 115         if (dev == NULL) {
 116                 perror("am7xxx_init");
 117                 exit_code = EXIT_FAILURE;
 118                 goto out_munmap;
 119         }
 120
 121         ret = am7xxx_send_image(dev, format, width, height, image, size);
 122         if (ret < 0) {
 123                 perror("am7xxx_send_image");
 124                 exit_code = EXIT_FAILURE;
 125                 goto cleanup;
 126         }
 127
 128         exit_code = EXIT_SUCCESS;
 129
 130 cleanup:
 131         am7xxx_shutdown(dev);
 132
 133 out_munmap:
 134         if (image != NULL) {
 135                 ret = munmap(image, size);
 136                 if (ret < 0)
 137                         perror("munmap");
 138         }
 139
 140 out_close_image_fd:
 141         if (image_fd >= 0) {
 142                 ret = close(image_fd);
 143                 if (ret < 0)
 144                         perror("close");
 145         }
 146
 147 out:
 148         exit(exit_code);
 149 }