1 files changed, 216 insertions, 0 deletions

diff --git a/src/plugins/test-vlc.c b/src/plugins/test-vlc.c
new file mode 100644
index 0000000..c80f6b6
--- /dev/null
+++ b/src/plugins/test-vlc.c
@@ -0,0 +1,216 @@
+/*
+     This file is part of libextractor.
+     Copyright (C) 2021 Christian Grothoff
+
+     libextractor is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     libextractor is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with libextractor; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+     Boston, MA 02110-1301, USA.
+
+NOTE: This plugin is not yet working. Somehow libvlc never calls any of the IO callbacks.
+
+*/
+/**
+ * @file plugins/vlc_extractor.c
+ * @brief plugin to extract metadata using libvlc
+ * @author Christian Grothoff
+ */
+#include <vlc/vlc.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+
+
+static void
+extract (void *ptr,
+         libvlc_media_t *media)
+{
+  struct
+  {
+    enum libvlc_meta_t vt;
+  } map[] = {
+    { libvlc_meta_Title, },
+    { libvlc_meta_Artist, },
+    { libvlc_meta_Genre, },
+    { libvlc_meta_Copyright, },
+    { libvlc_meta_Album, },
+    { libvlc_meta_TrackNumber, },
+    { libvlc_meta_Description, },
+    { libvlc_meta_Rating, },
+    { libvlc_meta_Date, },
+    { libvlc_meta_Setting, },
+    { libvlc_meta_URL, },
+    { libvlc_meta_Language, },
+    { libvlc_meta_NowPlaying, },
+    { libvlc_meta_Publisher, },
+    { libvlc_meta_EncodedBy, },
+    { libvlc_meta_ArtworkURL, },
+    { libvlc_meta_TrackID, },
+    { libvlc_meta_TrackTotal, },
+    { libvlc_meta_Director, },
+    { libvlc_meta_Season, },
+    { libvlc_meta_Episode, },
+    { libvlc_meta_ShowName, },
+    { libvlc_meta_Actors, },
+    { libvlc_meta_AlbumArtist, },
+    { libvlc_meta_DiscNumber, },
+    { libvlc_meta_DiscTotal, },
+    { -1 }
+  };
+
+  for (unsigned int i = 0;
+       -1 != map[i].vt;
+       i++)
+  {
+    char *meta;
+
+    fprintf (stderr,
+             ".");
+    meta = libvlc_media_get_meta (media,
+                                  map[i].vt);
+    if (NULL == meta)
+      continue;
+    fprintf (stderr,
+             "Found %d: %s\n",
+             map[i].vt,
+             meta);
+    free (meta);
+  }
+}
+
+
+static void
+media_ready (const struct libvlc_event_t *p_event,
+             void *p_data)
+{
+  fprintf (stderr,
+           "media status: %d, %d\n",
+           p_event->type == libvlc_MediaParsedChanged,
+           p_event->u.media_parsed_changed.new_status);
+  if (p_event->u.media_parsed_changed.new_status ==
+      libvlc_media_parsed_status_done)
+  {
+    fprintf (stderr,
+             "media ready\n");
+  }
+}
+
+
+static void
+my_logger (void *data,
+           int level,
+           const libvlc_log_t *ctx,
+           const char *fmt,
+           va_list args)
+{
+  vfprintf (stderr,
+            fmt,
+            args);
+  fprintf (stderr, "\n");
+}
+
+
+/**
+ * Extract information using libvlc
+ *
+ * @param ec extraction context
+ */
+void
+main(int argc,
+     char **argv)
+{
+  libvlc_instance_t *vlc;
+  libvlc_media_t *media;
+  libvlc_event_manager_t *em;
+
+  {
+    sigset_t set;
+
+    signal (SIGCHLD, SIG_DFL);
+    sigemptyset (&set);
+    sigaddset (&set, SIGPIPE);
+    pthread_sigmask (SIG_BLOCK, &set, NULL);
+  }
+
+  {
+    const char *argv[] = {
+      "-v",
+      "3",
+      NULL
+    };
+    vlc = libvlc_new (2, argv);
+  }
+  if (NULL == vlc)
+    return;
+  libvlc_log_set (vlc,
+                  &my_logger,
+                  NULL);
+  fprintf (stderr,
+           "Opening file `%s'\n",
+           argv[1]);
+  {
+    int fd = open (argv[1],
+                 O_RDONLY);
+    if (-1 == fd)
+    {
+      fprintf (stderr,
+               "Open failed: %s\n",
+               strerror (errno));
+      libvlc_release (vlc);
+      return;
+    }
+    media = libvlc_media_new_fd (vlc,
+                                 fd);
+  }
+  if (NULL == media)
+  {
+    libvlc_release (vlc);
+    return;
+  }
+
+  em = libvlc_media_event_manager (media);
+  libvlc_event_attach (em,
+                       libvlc_MediaParsedChanged,
+                       &media_ready,
+                       NULL);
+  fprintf (stderr,
+           "Triggering parser\n");
+  {
+    int status;
+
+    status = libvlc_media_parse_with_options (media,
+                                              libvlc_media_fetch_local
+                                              | libvlc_media_parse_network
+                                              | libvlc_media_fetch_network,
+                                              30000); /* 30s timeout */
+    fprintf (stderr,
+             "Status: %d\n",
+             status);
+  }
+  fprintf (stderr,
+           "Sleeping\n");
+  sleep (1);
+  extract (NULL,
+           media);
+  libvlc_media_release (media);
+  libvlc_release (vlc);
+}
+
+
+/* end of vlc_extractor.c */