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_context *ctx;
  54         am7xxx_device *dev;
  55         int format = AM7XXX_IMAGE_FORMAT_JPEG;
  56         int width = 800;
  57         int height = 480;
  58         unsigned char *image;
  59         unsigned int size;
  60         unsigned int native_width;
  61         unsigned int native_height;
  62         unsigned int unknown0;
  63         unsigned int unknown1;
  64
  65         while ((opt = getopt(argc, argv, "f:F:W:H:h")) != -1) {
  66                 switch (opt) {
  67                 case 'f':
  68                         strncpy(filename, optarg, FILENAME_MAX);
  69                         break;
  70                 case 'F':
  71                         format = atoi(optarg);
  72                         switch(format) {
  73                         case AM7XXX_IMAGE_FORMAT_JPEG:
  74                                 fprintf(stdout, "JPEG format\n");
  75                                 break;
  76                         case AM7XXX_IMAGE_FORMAT_NV12:
  77                                 fprintf(stdout, "NV12 format\n");
  78                                 break;
  79                         default:
  80                                 fprintf(stderr, "Unsupported format\n");
  81                                 exit(EXIT_FAILURE);
  82                         }
  83                         break;
  84                 case 'W':
  85                         width = atoi(optarg);
  86                         if (width < 0) {
  87                                 fprintf(stderr, "Unsupported width\n");
  88                                 exit(EXIT_FAILURE);
  89                         }
  90                         break;
  91                 case 'H':
  92                         height = atoi(optarg);
  93                         if (height < 0) {
  94                                 fprintf(stderr, "Unsupported height\n");
  95                                 exit(EXIT_FAILURE);
  96                         }
  97                         break;
  98                 case 'h':
  99                         usage(argv[0]);
 100                         exit(EXIT_SUCCESS);
 101                         break;
 102                 default: /* '?' */
 103                         usage(argv[0]);
 104                         exit(EXIT_FAILURE);
 105                 }
 106         }
 107
 108         if (filename[0] == '\0') {
 109                 fprintf(stderr, "An image file MUST be specified.\n");
 110                 exit_code = EXIT_FAILURE;
 111                 goto out;
 112         }
 113
 114         image_fd = open(filename, O_RDONLY);
 115         if (image_fd < 0) {
 116                 perror("open");
 117                 exit_code = EXIT_FAILURE;
 118                 goto out;
 119         }
 120         if (fstat(image_fd, &st) < 0) {
 121                 perror("fstat");
 122                 exit_code = EXIT_FAILURE;
 123                 goto out_close_image_fd;
 124         }
 125         size = st.st_size;
 126
 127         image = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, image_fd, 0);
 128         if (image == NULL) {
 129                 perror("mmap");
 130                 exit_code = EXIT_FAILURE;
 131                 goto out_close_image_fd;
 132         }
 133
 134         ret = am7xxx_init(&ctx);
 135         if (ret < 0) {
 136                 perror("am7xxx_init");
 137                 exit_code = EXIT_FAILURE;
 138                 goto out_munmap;
 139         }
 140
 141         ret = am7xxx_open_device(ctx, &dev, 0);
 142         if (ret < 0) {
 143                 perror("am7xxx_open_device");
 144                 exit_code = EXIT_FAILURE;
 145                 goto cleanup;
 146         }
 147
 148
 149         ret = am7xxx_close_device(dev);
 150         if (ret < 0) {
 151                 perror("am7xxx_close_device");
 152                 exit_code = EXIT_FAILURE;
 153                 goto cleanup;
 154         }
 155
 156         ret = am7xxx_open_device(ctx, &dev, 0);
 157         if (ret < 0) {
 158                 perror("am7xxx_open_device");
 159                 exit_code = EXIT_FAILURE;
 160                 goto cleanup;
 161         }
 162
 163         ret = am7xxx_get_device_info(dev, &native_width, &native_height, &unknown0, &unknown1);
 164         if (ret < 0) {
 165                 perror("am7xxx_get_info");
 166                 exit_code = EXIT_FAILURE;
 167                 goto cleanup;
 168         }
 169         printf("Native resolution: %dx%d\n", native_width, native_height);
 170         printf("Unknown0: %d\n", unknown0);
 171         printf("Unknown1: %d\n", unknown1);
 172
 173         ret = am7xxx_set_power_mode(dev, AM7XXX_POWER_LOW);
 174         if (ret < 0) {
 175                 perror("am7xxx_set_power_mode");
 176                 exit_code = EXIT_FAILURE;
 177                 goto cleanup;
 178         }
 179
 180         ret = am7xxx_send_image(dev, format, width, height, image, size);
 181         if (ret < 0) {
 182                 perror("am7xxx_send_image");
 183                 exit_code = EXIT_FAILURE;
 184                 goto cleanup;
 185         }
 186
 187         exit_code = EXIT_SUCCESS;
 188
 189 cleanup:
 190         am7xxx_shutdown(ctx);
 191
 192 out_munmap:
 193         ret = munmap(image, size);
 194         if (ret < 0)
 195                 perror("munmap");
 196
 197 out_close_image_fd:
 198         ret = close(image_fd);
 199         if (ret < 0)
 200                 perror("close");
 201
 202 out:
 203         exit(exit_code);
 204 }