playlist-vorbis.c

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/*
 *  playlist-ogg.c
 *  mod_musicindex
 *
 *  $Id: playlist-vorbis.c 1010 2012-08-07 13:38:34Z varenet $
 *
 *  Created by Regis BOUDIN on Thu Jan 22 2004.
 *  Copyright (c) 2003-2004 Regis BOUDIN
 *  Copyright (c) 2003-2005,2007 Thibaut VARENE
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License version 2.1,
 *  as published by the Free Software Foundation.
 *
 */

#include "playlist.h"
#include "playlist-vorbis.h"

#include <vorbis/codec.h>
#include <vorbis/vorbisfile.h>

#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif

static inline short ogg_ext_check(const char *const filename)
{
        const char *const ext = strrchr(filename, '.');
        if (ext && (!strncasecmp(ext, ".ogg", 4)        || /* official extention */
                !strncasecmp(ext, ".oga", 4))   )       /* audio in ogg */
                return TRUE;
        return FALSE;
}

mu_ent *make_ogg_entry(request_rec *r, apr_pool_t *pool, FILE *const in,
        const char *const filename)
{
        const mu_config *const conf = (mu_config *)ap_get_module_config(r->per_dir_config, &musicindex_module);
        mu_ent                  *p = NULL;
        OggVorbis_File          vf;
        const char              *t;
        struct stat             filestat;

        if (!ogg_ext_check(filename) || (ov_test(in, &vf, NULL, 0) != 0))
                return NULL;
        
        p = NEW_ENT(pool);
        if (p == NULL) {
                ov_clear(&vf);
                return NULL;
        }
        
        p->filetype = FT_OGG;
        p->flags &= ~EF_VBR;

        fstat(fileno(in), &filestat);
        p->size = filestat.st_size;
        p->mtime = filestat.st_mtime;

        if (ov_test_open(&vf) == 0) {

                vorbis_comment *comment = ov_comment(&vf, -1);
                if (comment != NULL) {
                        if ((t = vorbis_comment_query(comment, "ALBUM", 0)))
                                p->album = apr_pstrdup(pool, t);
                        if ((t = vorbis_comment_query(comment, "ARTIST", 0)))
                                p->artist = apr_pstrdup(pool, t);
                        if ((t = vorbis_comment_query(comment, "TITLE", 0)))
                                p->title = apr_pstrdup(pool, t);
                        if ((t = vorbis_comment_query(comment, "TRACKNUMBER", 0)))
                                p->track = atoi(t);
                        if ((t = vorbis_comment_query(comment, "DATE", 0)))
                                p->date = atoi(t);
                        if ((t = vorbis_comment_query(comment, "DISCNUMBER", 0)))       /* http://reactor-core.org/ogg-tagging.html */
                                p->posn = atoi(t);
                        if ((t = vorbis_comment_query(comment, "GENRE", 0)))
                                p->genre = apr_pstrdup(pool, t);
                }

                if (conf->options & MI_QUICKPL) {
                        p->bitrate = p->length = p->freq = 0;
                }
                else {
                        vorbis_info *info = ov_info(&vf, -1);
                        p->freq = info->rate;

#ifndef NO_BR_NOMINAL
                        if (info->bitrate_nominal)
                                p->bitrate = info->bitrate_nominal;     /* when available this is what players show */
                        else
#endif
                                p->bitrate = (long)ov_bitrate(&vf, -1);
                        if ((info->bitrate_upper > 0) && (info->bitrate_upper == info->bitrate_lower));
                        else    /* we have a VBR file */
                                p->flags |= EF_VBR;
                        p->length = (long)ov_time_total(&vf, -1);
                }

        }
        ov_clear(&vf);
        return p;
}