claunia/libcdio-osx
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Add interfaces which allow opening a cdio object before running paranoia.

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data_bigendianp is too neat to keep it private.
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rocky
2005-01-22 03:43:03 +00:00
parent 674ab62822
commit 33ae20b89d
1 changed files with 38 additions and 8 deletions
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46
include/cdio/cdda.h
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@@ -1,5 +1,5 @@
/*
$Id: cdda.h,v 1.7 2005/01/16 04:23:41 rocky Exp $
$Id: cdda.h,v 1.8 2005/01/22 03:43:03 rocky Exp $
Copyright (C) 2004, 2005 Rocky Bernstein <rocky@panix.com>
Copyright (C) 2001 Xiph.org
@@ -135,17 +135,31 @@ struct cdrom_drive_s {
/** autosense functions */
/** Returns a CD-ROM drive with a CD-DA in it.
/** Get a CD-ROM drive with a CD-DA in it.
If mesagedest is 1, then any messages in the process will be stored
in message.
*/
extern cdrom_drive_t *cdda_find_a_cdrom(int messagedest, char **message);
extern cdrom_drive_t *cdda_find_a_cdrom(int messagedest, char **ppsz_message);
/** Returns a CD-ROM drive with a CD-DA in it. */
extern cdrom_drive_t *cdda_identify(const char *device, int messagedest,
char **message);
extern cdrom_drive_t *cdda_identify_cooked(const char *device,int messagedest,
char **message);
/** Returns a paranoia CD-ROM drive object with a CD-DA in it.
@see cdda_identify_cdio
*/
extern cdrom_drive_t *cdda_identify(const char *psz_device, int messagedest,
char **ppsz_message);
/** Returns a paranoia CD-ROM drive ojbect with a CD-DA in it.
In contrast to cdda_identify, we start out with an initialzed p_cdio
object. For example you may have used that for other purposes such
as to get CDDB/CD-Text information.
@see cdda_identify
*/
cdrom_drive_t *cdda_identify_cdio(CdIo_t *p_cdio,
int messagedest, char **ppsz_messages);
/** Obsolete interface. Don't use. @see cdda_identify */
extern cdrom_drive_t *cdda_identify_cooked(const char *ppsz_device,
int messagedest,
char **ppsz_message);
/** drive-oriented functions */
extern int cdda_speed_set(cdrom_drive_t *d, int speed);
@@ -201,6 +215,22 @@ extern lsn_t cdda_disc_firstsector(cdrom_drive_t *d);
returned on error. */
extern lsn_t cdda_disc_lastsector(cdrom_drive_t *d);
/*! Determine Endian-ness of the CD-drive based on reading data from
it. Some drives return audio data Big Endian while some (most)
return data Little Endian. Drives known to return data bigendian are
SCSI drives from Kodak, Ricoh, HP, Philips, Plasmon, Grundig
CDR100IPW, and Mitsumi CD-R. ATAPI and MMC drives are little endian.
rocky: As someone who didn't write the code, I have to say this is
nothing less than brilliant. An FFT is done both ways and the the
transform is looked at to see which has data in the FFT (or audible)
portion. (Or so that's how I understand it.)
@return 1 if big-endian, 0 if little-endian, -1 if we couldn't
figure things out or some error.
*/
extern int data_bigendianp(cdrom_drive_t *d);
/** transport errors: */
#define TR_OK 0