# tracks.c

    #include "common.h"
    #include <stdlib.h>

    static void dump_trackinfo(LIBMTP_track_t *track)
    {
      printf("Track ID: %u\n", track->item_id);
      if (track->title != NULL)
        printf("   Title: %s\n", track->title);
      if (track->artist != NULL)
        printf("   Artist: %s\n", track->artist);
      if (track->genre != NULL)
        printf("   Genre: %s\n", track->genre);
      if (track->composer != NULL)
        printf("   Composer: %s\n", track->composer);
      if (track->album != NULL)
        printf("   Album: %s\n", track->album);
      if (track->date != NULL)
        printf("   Date: %s\n", track->date);
      if (track->filename != NULL)
        printf("   Origfilename: %s\n", track->filename);
      printf("   Track number: %d\n", track->tracknumber);
      printf("   Duration: %d milliseconds\n", track->duration);
    #ifdef __WIN32__
      printf("   File size %I64u bytes\n", track->filesize);
    #else
      printf("   File size %llu bytes\n", (long long unsigned int) track->filesize);
    #endif
      printf("   Filetype: %s\n", LIBMTP_Get_Filetype_Description(track->filetype));
      if (track->samplerate != 0) {
        printf("   Sample rate: %u Hz\n", track->samplerate);
      }
      if (track->nochannels != 0) {
        printf("   Number of channels: %u\n", track->nochannels);
      }
      if (track->wavecodec != 0) {
        printf("   WAVE fourCC code: 0x%08X\n", track->wavecodec);
      }
      if (track->bitrate != 0) {
        printf("   Bitrate: %u bits/s\n", track->bitrate);
      }
      if (track->bitratetype != 0) {
        if (track->bitratetype == 1) {
          printf("   Bitrate type: Constant\n");
        } else if (track->bitratetype == 2) {
          printf("   Bitrate type: Variable (VBR)\n");
        } else if (track->bitratetype == 3) {
          printf("   Bitrate type: Free\n");
        } else {
          printf("   Bitrate type: Unknown/Erroneous value\n");
        }
      }
      if (track->rating != 0) {
        printf("   User rating: %u (out of 100)\n", track->rating);
      }
      if (track->usecount != 0) {
        printf("   Use count: %u times\n", track->usecount);
      }
    }

    int main (int argc, char **argv)
    {
      LIBMTP_mtpdevice_t *device_list, *iter;
      LIBMTP_track_t *tracks;

      LIBMTP_Init();
      fprintf(stdout, "Attempting to connect device(s)\n");

      switch(LIBMTP_Get_Connected_Devices(&device_list))
      {
      case LIBMTP_ERROR_NO_DEVICE_ATTACHED:
        fprintf(stdout, "mtp-tracks: No Devices have been found\n");
        return 0;
      case LIBMTP_ERROR_CONNECTING:
        fprintf(stderr, "mtp-tracks: There has been an error connecting. Exit\n");
        return 1;
      case LIBMTP_ERROR_MEMORY_ALLOCATION:
        fprintf(stderr, "mtp-tracks: Memory Allocation Error. Exit\n");
        return 1;

      /* Unknown general errors - This should never execute */
      case LIBMTP_ERROR_GENERAL:
      default:
        fprintf(stderr, "mtp-tracks: Unknown error, please report "
                        "this to the libmtp developers\n");
      return 1;

      /* Successfully connected at least one device, so continue */
      case LIBMTP_ERROR_NONE:
        fprintf(stdout, "mtp-tracks: Successfully connected\n");
        fflush(stdout);
      }

      /* iterate through connected MTP devices */
      for(iter = device_list; iter != NULL; iter = iter->next)
      {
            char *friendlyname;
        /* Echo the friendly name so we know which device we are working with */
        friendlyname = LIBMTP_Get_Friendlyname(iter);
        if (friendlyname == NULL) {
          printf("Friendly name: (NULL)\n");
        } else {
          printf("Friendly name: %s\n", friendlyname);
          free(friendlyname);
        }

              // Get track listing.
              tracks = LIBMTP_Get_Tracklisting_With_Callback(iter, NULL, NULL);
              if (tracks == NULL) {
                printf("No tracks.\n");
              } else {
                LIBMTP_track_t *track, *tmp;
                track = tracks;
                while (track != NULL) {
                  dump_trackinfo(track);
                  tmp = track;
                  track = track->next;
                  LIBMTP_destroy_track_t(tmp);
                }
              }
      }

      LIBMTP_Release_Device_List(device_list);
      printf("OK.\n");
      exit (0);
    }