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         unsigned char *image;
  58         unsigned int size;
  59         unsigned int native_width;
  60         unsigned int native_height;
  61         unsigned int unknown0;
  62         unsigned int unknown1;
  63
  64         while ((opt = getopt(argc, argv, "f:F:W:H:h")) != -1) {
  65                 switch (opt) {
  66                 case 'f':
  67                         strncpy(filename, optarg, FILENAME_MAX);
  68                         break;
  69                 case 'F':
  70                         format = atoi(optarg);
  71                         switch(format) {
  72                         case AM7XXX_IMAGE_FORMAT_JPEG:
  73                                 fprintf(stdout, "JPEG format\n");
  74                                 break;
  75                         case AM7XXX_IMAGE_FORMAT_NV12:
  76                                 fprintf(stdout, "NV12 format\n");
  77                                 break;
  78                         default:
  79                                 fprintf(stderr, "Unsupported format\n");
  80                                 exit(EXIT_FAILURE);
  81                         }
  82                         break;
  83                 case 'W':
  84                         width = atoi(optarg);
  85                         if (width < 0) {
  86                                 fprintf(stderr, "Unsupported width\n");
  87                                 exit(EXIT_FAILURE);
  88                         }
  89                         break;
  90                 case 'H':
  91                         height = atoi(optarg);
  92                         if (height < 0) {
  93                                 fprintf(stderr, "Unsupported height\n");
  94                                 exit(EXIT_FAILURE);
  95                         }
  96                         break;
  97                 case 'h':
  98                         usage(argv[0]);
  99                         exit(EXIT_SUCCESS);
 100                         break;
 101                 default: /* '?' */
 102                         usage(argv[0]);
 103                         exit(EXIT_FAILURE);
 104                 }
 105         }
 106
 107         if (filename[0] == '\0') {
 108                 fprintf(stderr, "An image file MUST be specified.\n");
 109                 exit_code = EXIT_FAILURE;
 110                 goto out;
 111         }
 112
 113         image_fd = open(filename, O_RDONLY);
 114         if (image_fd < 0) {
 115                 perror("open");
 116                 exit_code = EXIT_FAILURE;
 117                 goto out;
 118         }
 119         if (fstat(image_fd, &st) < 0) {
 120                 perror("fstat");
 121                 exit_code = EXIT_FAILURE;
 122                 goto out_close_image_fd;
 123         }
 124         size = st.st_size;
 125
 126         image = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, image_fd, 0);
 127         if (image == NULL) {
 128                 perror("mmap");
 129                 exit_code = EXIT_FAILURE;
 130                 goto out_close_image_fd;
 131         }
 132
 133         dev = am7xxx_init();
 134         if (dev == NULL) {
 135                 perror("am7xxx_init");
 136                 exit_code = EXIT_FAILURE;
 137                 goto out_munmap;
 138         }
 139
 140         ret = am7xxx_get_device_info(dev, &native_width, &native_height, &unknown0, &unknown1);
 141         if (ret < 0) {
 142                 perror("am7xxx_get_info");
 143                 exit_code = EXIT_FAILURE;
 144                 goto cleanup;
 145         }
 146         printf("Native resolution: %dx%d\n", native_width, native_height);
 147         printf("Unknown0: %d\n", unknown0);
 148         printf("Unknown1: %d\n", unknown1);
 149
 150         ret = am7xxx_set_power_mode(dev, AM7XXX_POWER_LOW);
 151         if (ret < 0) {
 152                 perror("am7xxx_set_power_mode");
 153                 exit_code = EXIT_FAILURE;
 154                 goto cleanup;
 155         }
 156
 157         ret = am7xxx_send_image(dev, format, width, height, image, size);
 158         if (ret < 0) {
 159                 perror("am7xxx_send_image");
 160                 exit_code = EXIT_FAILURE;
 161                 goto cleanup;
 162         }
 163
 164         exit_code = EXIT_SUCCESS;
 165
 166 cleanup:
 167         am7xxx_shutdown(dev);
 168
 169 out_munmap:
 170         ret = munmap(image, size);
 171         if (ret < 0)
 172                 perror("munmap");
 173
 174 out_close_image_fd:
 175         ret = close(image_fd);
 176         if (ret < 0)
 177                 perror("close");
 178
 179 out:
 180         exit(exit_code);
 181 }