examples/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-l <log level>\t\tthe verbosity level of libam7xxx output (0-5)\n");
  40         printf("\t-W <image width>\tthe width of the image to upload\n");
  41         printf("\t-H <image height>\tthe height of the image to upload\n");
  42         printf("\t-h \t\t\tthis help message\n");
  43 }
  44
  45 int main(int argc, char *argv[])
  46 {
  47         int ret;
  48         int exit_code = EXIT_SUCCESS;
  49         int opt;
  50
  51         char filename[FILENAME_MAX] = {0};
  52         int image_fd;
  53         struct stat st;
  54         am7xxx_context *ctx;
  55         am7xxx_device *dev;
  56         int log_level = AM7XXX_LOG_INFO;
  57         int format = AM7XXX_IMAGE_FORMAT_JPEG;
  58         int width = 800;
  59         int height = 480;
  60         unsigned char *image;
  61         unsigned int size;
  62         am7xxx_device_info device_info;
  63
  64         while ((opt = getopt(argc, argv, "f:F:l: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 'l':
  84                         log_level = atoi(optarg);
  85                         if (log_level < AM7XXX_LOG_FATAL || log_level > AM7XXX_LOG_TRACE) {
  86                                 fprintf(stderr, "Unsupported log level, falling back to AM7XXX_LOG_ERROR\n");
  87                                 log_level = AM7XXX_LOG_ERROR;
  88                         }
  89                         break;
  90                 case 'W':
  91                         width = atoi(optarg);
  92                         if (width < 0) {
  93                                 fprintf(stderr, "Unsupported width\n");
  94                                 exit(EXIT_FAILURE);
  95                         }
  96                         break;
  97                 case 'H':
  98                         height = atoi(optarg);
  99                         if (height < 0) {
 100                                 fprintf(stderr, "Unsupported height\n");
 101                                 exit(EXIT_FAILURE);
 102                         }
 103                         break;
 104                 case 'h':
 105                         usage(argv[0]);
 106                         exit(EXIT_SUCCESS);
 107                         break;
 108                 default: /* '?' */
 109                         usage(argv[0]);
 110                         exit(EXIT_FAILURE);
 111                 }
 112         }
 113
 114         if (filename[0] == '\0') {
 115                 fprintf(stderr, "An image file MUST be specified.\n");
 116                 exit_code = EXIT_FAILURE;
 117                 goto out;
 118         }
 119
 120         image_fd = open(filename, O_RDONLY);
 121         if (image_fd < 0) {
 122                 perror("open");
 123                 exit_code = EXIT_FAILURE;
 124                 goto out;
 125         }
 126         if (fstat(image_fd, &st) < 0) {
 127                 perror("fstat");
 128                 exit_code = EXIT_FAILURE;
 129                 goto out_close_image_fd;
 130         }
 131         size = st.st_size;
 132
 133         image = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, image_fd, 0);
 134         if (image == NULL) {
 135                 perror("mmap");
 136                 exit_code = EXIT_FAILURE;
 137                 goto out_close_image_fd;
 138         }
 139
 140         ret = am7xxx_init(&ctx);
 141         if (ret < 0) {
 142                 perror("am7xxx_init");
 143                 exit_code = EXIT_FAILURE;
 144                 goto out_munmap;
 145         }
 146
 147         am7xxx_set_log_level(ctx, log_level);
 148
 149         ret = am7xxx_open_device(ctx, &dev, 0);
 150         if (ret < 0) {
 151                 perror("am7xxx_open_device");
 152                 exit_code = EXIT_FAILURE;
 153                 goto cleanup;
 154         }
 155
 156
 157         ret = am7xxx_close_device(dev);
 158         if (ret < 0) {
 159                 perror("am7xxx_close_device");
 160                 exit_code = EXIT_FAILURE;
 161                 goto cleanup;
 162         }
 163
 164         ret = am7xxx_open_device(ctx, &dev, 0);
 165         if (ret < 0) {
 166                 perror("am7xxx_open_device");
 167                 exit_code = EXIT_FAILURE;
 168                 goto cleanup;
 169         }
 170
 171         ret = am7xxx_get_device_info(dev, &device_info);
 172         if (ret < 0) {
 173                 perror("am7xxx_get_info");
 174                 exit_code = EXIT_FAILURE;
 175                 goto cleanup;
 176         }
 177         printf("Native resolution: %dx%d\n",
 178                device_info.native_width, device_info.native_height);
 179
 180         ret = am7xxx_set_power_mode(dev, AM7XXX_POWER_LOW);
 181         if (ret < 0) {
 182                 perror("am7xxx_set_power_mode");
 183                 exit_code = EXIT_FAILURE;
 184                 goto cleanup;
 185         }
 186
 187         ret = am7xxx_send_image(dev, format, width, height, image, size);
 188         if (ret < 0) {
 189                 perror("am7xxx_send_image");
 190                 exit_code = EXIT_FAILURE;
 191                 goto cleanup;
 192         }
 193
 194         exit_code = EXIT_SUCCESS;
 195
 196 cleanup:
 197         am7xxx_shutdown(ctx);
 198
 199 out_munmap:
 200         ret = munmap(image, size);
 201         if (ret < 0)
 202                 perror("munmap");
 203
 204 out_close_image_fd:
 205         ret = close(image_fd);
 206         if (ret < 0)
 207                 perror("close");
 208
 209 out:
 210         exit(exit_code);
 211 }