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-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         unsigned int native_width;
  63         unsigned int native_height;
  64         unsigned int unknown0;
  65         unsigned int unknown1;
  66
  67         while ((opt = getopt(argc, argv, "f:F:l:W:H:h")) != -1) {
  68                 switch (opt) {
  69                 case 'f':
  70                         strncpy(filename, optarg, FILENAME_MAX);
  71                         break;
  72                 case 'F':
  73                         format = atoi(optarg);
  74                         switch(format) {
  75                         case AM7XXX_IMAGE_FORMAT_JPEG:
  76                                 fprintf(stdout, "JPEG format\n");
  77                                 break;
  78                         case AM7XXX_IMAGE_FORMAT_NV12:
  79                                 fprintf(stdout, "NV12 format\n");
  80                                 break;
  81                         default:
  82                                 fprintf(stderr, "Unsupported format\n");
  83                                 exit(EXIT_FAILURE);
  84                         }
  85                         break;
  86                 case 'l':
  87                         log_level = atoi(optarg);
  88                         if (log_level < AM7XXX_LOG_FATAL || log_level > AM7XXX_LOG_TRACE) {
  89                                 fprintf(stderr, "Unsupported log level, falling back to AM7XXX_LOG_ERROR\n");
  90                                 log_level = AM7XXX_LOG_ERROR;
  91                         }
  92                         break;
  93                 case 'W':
  94                         width = atoi(optarg);
  95                         if (width < 0) {
  96                                 fprintf(stderr, "Unsupported width\n");
  97                                 exit(EXIT_FAILURE);
  98                         }
  99                         break;
 100                 case 'H':
 101                         height = atoi(optarg);
 102                         if (height < 0) {
 103                                 fprintf(stderr, "Unsupported height\n");
 104                                 exit(EXIT_FAILURE);
 105                         }
 106                         break;
 107                 case 'h':
 108                         usage(argv[0]);
 109                         exit(EXIT_SUCCESS);
 110                         break;
 111                 default: /* '?' */
 112                         usage(argv[0]);
 113                         exit(EXIT_FAILURE);
 114                 }
 115         }
 116
 117         if (filename[0] == '\0') {
 118                 fprintf(stderr, "An image file MUST be specified.\n");
 119                 exit_code = EXIT_FAILURE;
 120                 goto out;
 121         }
 122
 123         image_fd = open(filename, O_RDONLY);
 124         if (image_fd < 0) {
 125                 perror("open");
 126                 exit_code = EXIT_FAILURE;
 127                 goto out;
 128         }
 129         if (fstat(image_fd, &st) < 0) {
 130                 perror("fstat");
 131                 exit_code = EXIT_FAILURE;
 132                 goto out_close_image_fd;
 133         }
 134         size = st.st_size;
 135
 136         image = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, image_fd, 0);
 137         if (image == NULL) {
 138                 perror("mmap");
 139                 exit_code = EXIT_FAILURE;
 140                 goto out_close_image_fd;
 141         }
 142
 143         ret = am7xxx_init(&ctx);
 144         if (ret < 0) {
 145                 perror("am7xxx_init");
 146                 exit_code = EXIT_FAILURE;
 147                 goto out_munmap;
 148         }
 149
 150         am7xxx_set_log_level(ctx, log_level);
 151
 152         ret = am7xxx_open_device(ctx, &dev, 0);
 153         if (ret < 0) {
 154                 perror("am7xxx_open_device");
 155                 exit_code = EXIT_FAILURE;
 156                 goto cleanup;
 157         }
 158
 159
 160         ret = am7xxx_close_device(dev);
 161         if (ret < 0) {
 162                 perror("am7xxx_close_device");
 163                 exit_code = EXIT_FAILURE;
 164                 goto cleanup;
 165         }
 166
 167         ret = am7xxx_open_device(ctx, &dev, 0);
 168         if (ret < 0) {
 169                 perror("am7xxx_open_device");
 170                 exit_code = EXIT_FAILURE;
 171                 goto cleanup;
 172         }
 173
 174         ret = am7xxx_get_device_info(dev, &native_width, &native_height, &unknown0, &unknown1);
 175         if (ret < 0) {
 176                 perror("am7xxx_get_info");
 177                 exit_code = EXIT_FAILURE;
 178                 goto cleanup;
 179         }
 180         printf("Native resolution: %dx%d\n", native_width, native_height);
 181         printf("Unknown0: %d\n", unknown0);
 182         printf("Unknown1: %d\n", unknown1);
 183
 184         ret = am7xxx_set_power_mode(dev, AM7XXX_POWER_LOW);
 185         if (ret < 0) {
 186                 perror("am7xxx_set_power_mode");
 187                 exit_code = EXIT_FAILURE;
 188                 goto cleanup;
 189         }
 190
 191         ret = am7xxx_send_image(dev, format, width, height, image, size);
 192         if (ret < 0) {
 193                 perror("am7xxx_send_image");
 194                 exit_code = EXIT_FAILURE;
 195                 goto cleanup;
 196         }
 197
 198         exit_code = EXIT_SUCCESS;
 199
 200 cleanup:
 201         am7xxx_shutdown(ctx);
 202
 203 out_munmap:
 204         ret = munmap(image, size);
 205         if (ret < 0)
 206                 perror("munmap");
 207
 208 out_close_image_fd:
 209         ret = close(image_fd);
 210         if (ret < 0)
 211                 perror("close");
 212
 213 out:
 214         exit(exit_code);
 215 }