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 = -1;
  52         am7xxx_device dev;
  53         int format = AM7XXX_IMAGE_FORMAT_JPEG;
  54         int width = 800;
  55         int height = 480;
  56         uint8_t *image = NULL;
  57         unsigned int size = 59475;
  58
  59         while ((opt = getopt(argc, argv, "f:F:W:H:h")) != -1) {
  60                 switch (opt) {
  61                 case 'f':
  62                         strncpy(filename, optarg, FILENAME_MAX);
  63                         break;
  64                 case 'F':
  65                         format = atoi(optarg);
  66                         switch(format) {
  67                         case AM7XXX_IMAGE_FORMAT_JPEG:
  68                                 fprintf(stdout, "JPEG format\n");
  69                                 break;
  70                         case AM7XXX_IMAGE_FORMAT_NV12:
  71                                 fprintf(stdout, "NV12 format\n");
  72                                 break;
  73                         default:
  74                                 fprintf(stderr, "Unsupported format\n");
  75                                 exit(EXIT_FAILURE);
  76                         }
  77                         break;
  78                 case 'W':
  79                         width = atoi(optarg);
  80                         if (width < 0) {
  81                                 fprintf(stderr, "Unsupported width\n");
  82                                 exit(EXIT_FAILURE);
  83                         }
  84                         break;
  85                 case 'H':
  86                         height = atoi(optarg);
  87                         if (height < 0) {
  88                                 fprintf(stderr, "Unsupported height\n");
  89                                 exit(EXIT_FAILURE);
  90                         }
  91                         break;
  92                 default: /* '?' */
  93                         usage(argv[0]);
  94                         exit(EXIT_FAILURE);
  95                 }
  96         }
  97
  98         if (filename[0] != '\0') {
  99                 struct stat st;
 100
 101                 image_fd = open(filename, O_RDONLY);
 102                 if (image_fd < 0) {
 103                         perror("open");
 104                         exit_code = EXIT_FAILURE;
 105                         goto out;
 106                 }
 107                 if (fstat(image_fd, &st) < 0) {
 108                         perror("fstat");
 109                         exit_code = EXIT_FAILURE;
 110                         goto out_close_image_fd;
 111                 }
 112                 size = st.st_size;
 113
 114                 image = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, image_fd, 0);
 115                 if (image == NULL) {
 116                         perror("mmap");
 117                         exit_code = EXIT_FAILURE;
 118                         goto out_close_image_fd;
 119                 }
 120         }
 121
 122         dev = am7xxx_init();
 123         if (dev == NULL) {
 124                 perror("am7xxx_init");
 125                 exit_code = EXIT_FAILURE;
 126                 goto out_munmap;
 127         }
 128
 129         ret = am7xxx_send_image(dev, format, width, height, image, size);
 130         if (ret < 0) {
 131                 perror("am7xxx_send_image");
 132                 exit_code = EXIT_FAILURE;
 133                 goto cleanup;
 134         }
 135
 136         exit_code = EXIT_SUCCESS;
 137
 138 cleanup:
 139         am7xxx_shutdown(dev);
 140
 141 out_munmap:
 142         if (image != NULL) {
 143                 ret = munmap(image, size);
 144                 if (ret < 0)
 145                         perror("munmap");
 146         }
 147
 148 out_close_image_fd:
 149         if (image_fd >= 0) {
 150                 ret = close(image_fd);
 151                 if (ret < 0)
 152                         perror("close");
 153         }
 154
 155 out:
 156         exit(exit_code);
 157 }