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 }