playlists.c

来自「Media transfer protocol implementation o」· C语言 代码 · 共 56 行

#include "common.h"

static void dump_plinfo(LIBMTP_mtpdevice_t *device, LIBMTP_playlist_t *pl)
{
  uint32_t i;

  printf("Playlist ID: %d\n", pl->playlist_id);
  if (pl->name != NULL)
    printf("   Name: %s\n", pl->name);
  printf("   Tracks:\n");

  for (i = 0; i < pl->no_tracks; i++) {
    LIBMTP_track_t *track;
    
    track = LIBMTP_Get_Trackmetadata(device, pl->tracks[i]);
    if (track != NULL) {
      printf("      %u: %s - %s\n", pl->tracks[i], track->artist, track->title);
      LIBMTP_destroy_track_t(track);
    } else {
      printf("      %u: INVALID TRACK REFERENCE!\n", pl->tracks[i]);
    }
  }
}

int main (int argc, char **argv)
{
  LIBMTP_mtpdevice_t *device;
  LIBMTP_playlist_t *playlists;

  LIBMTP_Init();
  device = LIBMTP_Get_First_Device();
  if (device == NULL) {
    printf("No devices.\n");
    exit (0);
  }
  
  // Get playlist listing.
  playlists = LIBMTP_Get_Playlist_List(device);
  if (playlists == NULL) {
    printf("No playlists.\n");
  } else {
    LIBMTP_playlist_t *pl, *tmp;
    pl = playlists;
    while (pl != NULL) {
      dump_plinfo(device, pl);
      tmp = pl;
      pl = pl->next;
      LIBMTP_destroy_playlist_t(tmp);
    }
  }
    
  LIBMTP_Release_Device(device);
  printf("OK.\n");
  exit (0);
}