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cddb.c
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cddb.c
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#include "giles.h"
#include "cddb.h"
#include <cdio/cdio.h>
/**
* Given a CDIO device, calculates the necessary information about the device
* and contacts a CDDB server to get disk information.
*
* @param p_cdio a CDIO device
* @param disk the disk structure to store the information in
*
* @return an error status about whether information was obtained
*/
enum giles_cddb_err get_cddb_info_for_device(const CdIo_t *p_cdio, cddb_disc_t *disc) {
lsn_t last_lsn;
msf_t last_msf;
unsigned disc_len_in_s, i, matches;
track_t num_tracks;
cddb_track_t *track;
cddb_conn_t *conn;
num_tracks = cdio_get_num_tracks(p_cdio);
DPRINTF ("Disc contains %d tracks\n", num_tracks);
for (i = 1; i <= num_tracks; i++) {
track = cddb_track_new();
cddb_track_set_frame_offset(track, cdio_get_track_lba(p_cdio, i));
DPRINTF ("Offset for track %d is %d\n", i, cdio_get_track_lba(p_cdio, i));
cddb_disc_add_track(disc, track);
}
last_lsn = cdio_get_disc_last_lsn(p_cdio);
cdio_lsn_to_msf(last_lsn, &last_msf);
disc_len_in_s = cdio_audio_get_msf_seconds(&last_msf);
cddb_disc_set_length(disc, disc_len_in_s);
conn = cddb_new();
if (conn == NULL) {
cddb_error_print(cddb_errno(conn));
return giles_cddb_err_no_conn;
}
matches = cddb_query(conn, disc);
if (matches == -1) {
return giles_cddb_err_no_conn;
} else if (matches == 0) {
return giles_cddb_err_no_match;
}
cddb_read(conn, disc);
cddb_destroy(conn);
return giles_cddb_err_none;
}