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/*
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Copyright (C) 2005, 2008, 2009, 2011 Rocky Bernstein <rocky@gnu.org>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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# define __CDIO_CONFIG_H__ 1
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#endif
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#include <cdio/cdio.h>
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#include <cdio/audio.h>
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#include "cddb.h"
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cddb_opts_t cddb_opts;
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/*!
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Returns the sum of the decimal digits in a number. Eg. 1955 = 20
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*/
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static int
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cddb_dec_digit_sum(int n)
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{
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int ret=0;
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for (;;) {
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ret += n%10;
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n = n/10;
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if (!n) return ret;
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}
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}
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/*!
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Compute the CDDB disk ID for an Audio disk. This is a funny checksum
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consisting of the concatenation of 3 things:
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the sum of the decimal digits of sizes of all tracks,
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the total length of the disk, and
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the number of tracks.
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*/
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uint32_t
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cddb_discid(CdIo_t *p_cdio, track_t i_tracks)
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{
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int i,t,n=0;
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msf_t start_msf;
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msf_t msf;
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for (i = 1; i <= i_tracks; i++) {
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cdio_get_track_msf(p_cdio, i, &msf;;
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n += cddb_dec_digit_sum(cdio_audio_get_msf_seconds(&msf));
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}
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cdio_get_track_msf(p_cdio, 1, &start_msf);
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cdio_get_track_msf(p_cdio, CDIO_CDROM_LEADOUT_TRACK, &msf;;
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t = cdio_audio_get_msf_seconds(&msf)-cdio_audio_get_msf_seconds(&start_msf);
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return ((n % 0xff) << 24 | t << 8 | i_tracks);
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}
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#ifdef HAVE_CDDB
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bool
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init_cddb(CdIo_t *p_cdio, cddb_conn_t **pp_conn, cddb_disc_t **pp_cddb_disc,
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error_fn_t errmsg, track_t i_first_track, track_t i_tracks,
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int *i_cddb_matches)
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{
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track_t i;
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*pp_conn = cddb_new();
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*pp_cddb_disc = NULL;
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if (!*pp_conn) {
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errmsg("unable to initialize libcddb");
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return false;
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}
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if (NULL == cddb_opts.email)
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cddb_set_email_address(*pp_conn, "me@home");
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else
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cddb_set_email_address(*pp_conn, cddb_opts.email);
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if (NULL == cddb_opts.server)
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cddb_set_server_name(*pp_conn, "freedb.freedb.org");
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else
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cddb_set_server_name(*pp_conn, cddb_opts.server);
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if (cddb_opts.timeout >= 0)
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cddb_set_timeout(*pp_conn, cddb_opts.timeout);
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cddb_set_server_port(*pp_conn, cddb_opts.port);
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if (cddb_opts.http)
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cddb_http_enable(*pp_conn);
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else
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cddb_http_disable(*pp_conn);
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if (NULL != cddb_opts.cachedir)
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cddb_cache_set_dir(*pp_conn, cddb_opts.cachedir);
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if (cddb_opts.disable_cache)
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cddb_cache_disable(*pp_conn);
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*pp_cddb_disc = cddb_disc_new();
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if (!*pp_cddb_disc) {
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errmsg("unable to create CDDB disc structure");
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cddb_destroy(*pp_conn);
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return false;
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}
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for(i = 0; i < i_tracks; i++) {
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cddb_track_t *t = cddb_track_new();
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cddb_track_set_frame_offset(t,
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cdio_get_track_lba(p_cdio, i+i_first_track));
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cddb_disc_add_track(*pp_cddb_disc, t);
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}
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cddb_disc_set_length(*pp_cddb_disc,
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cdio_get_track_lba(p_cdio, CDIO_CDROM_LEADOUT_TRACK)
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/ CDIO_CD_FRAMES_PER_SEC);
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if (!cddb_disc_calc_discid(*pp_cddb_disc)) {
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errmsg("libcddb calc discid failed.");
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cddb_destroy(*pp_conn);
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return false;
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}
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*i_cddb_matches = cddb_query(*pp_conn, *pp_cddb_disc);
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if (-1 == *i_cddb_matches)
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errmsg(cddb_error_str(cddb_errno(*pp_conn)));
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cddb_read(*pp_conn, *pp_cddb_disc);
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return true;
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}
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#endif /*HAVE_CDDB*/
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