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More audio control corrections.

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This commit is contained in:
rocky
2005-03-06 11:21:52 +00:00
parent 7b78b896f4
commit 1fe287e813
14 changed files with 290 additions and 133 deletions
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57
src/cd-info.c
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@@ -1,5 +1,5 @@
/*
$Id: cd-info.c,v 1.131 2005/03/06 02:59:26 rocky Exp $
$Id: cd-info.c,v 1.132 2005/03/06 11:21:52 rocky Exp $
Copyright (C) 2003, 2004, 2005 Rocky Bernstein <rocky@panix.com>
Copyright (C) 1996, 1997, 1998 Gerd Knorr <kraxel@bytesex.org>
@@ -26,6 +26,7 @@
*/
#include "util.h"
#include "cddb.h"
#include <stdarg.h>
#ifdef HAVE_CDDB
@@ -349,60 +350,6 @@ parse_options (int argc, const char *argv[])
return true;
}
/* ------------------------------------------------------------------------ */
/* CDDB */
/*
Returns the sum of the decimal digits in a number. Eg. 1955 = 20
*/
static int
cddb_dec_digit_sum(int n)
{
int ret=0;
for (;;) {
ret += n%10;
n = n/10;
if (!n)
return ret;
}
}
/* Return the number of seconds (discarding frame portion) of an MSF */
static inline unsigned int
msf_seconds(msf_t *msf)
{
return cdio_from_bcd8(msf->m)*CDIO_CD_SECS_PER_MIN + cdio_from_bcd8(msf->s);
}
/*
Compute the CDDB disk ID for an Audio disk. This is a funny checksum
consisting of the concatenation of 3 things:
the sum of the decimal digits of sizes of all tracks,
the total length of the disk, and
the number of tracks.
*/
static unsigned long
cddb_discid(CdIo_t *p_cdio, int i_tracks)
{
int i,t,n=0;
msf_t start_msf;
msf_t msf;
for (i = 1; i <= i_tracks; i++) {
cdio_get_track_msf(p_cdio, i, &msf);
n += cddb_dec_digit_sum(msf_seconds(&msf));
}
cdio_get_track_msf(p_cdio, 1, &start_msf);
cdio_get_track_msf(p_cdio, CDIO_CDROM_LEADOUT_TRACK, &msf);
t = msf_seconds(&msf) - msf_seconds(&start_msf);
return ((n % 0xff) << 24 | t << 8 | i_tracks);
}
/* CDIO logging routines */
static cdio_log_handler_t gl_default_cdio_log_handler = NULL;