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/*
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);
media = libvlc_media_new_path (vlc,
argv[1]);
if (NULL == media)
{
fprintf (stderr,
"Opening path `%s' failed!\n",
argv[1]);
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 (2);
extract (NULL,
media);
libvlc_media_release (media);
libvlc_release (vlc);
}
/* end of vlc_extractor.c */
|
