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get_track_pregap_lba, get_track_pregap_lsn. Section on "CD-DA pregap" in libcdio manual.

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All changes from Robert William Fuller.
This commit is contained in:
rocky
2008-03-16 00:12:42 +00:00
parent d995e59785
commit 51d9652c82
15 changed files with 341 additions and 55 deletions
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26
lib/driver/image_common.c
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@@ -1,5 +1,5 @@
/*
$Id: image_common.c,v 1.12 2005/02/17 07:03:37 rocky Exp $
$Id: image_common.c,v 1.13 2008/03/16 00:12:43 rocky Exp $
Copyright (C) 2004, 2005 Rocky Bernstein <rocky@panix.com>
@@ -246,6 +246,30 @@ get_track_preemphasis_image(const void *p_user_data, track_t i_track)
& PRE_EMPHASIS ) ? CDIO_TRACK_FLAG_TRUE : CDIO_TRACK_FLAG_FALSE;
}
/*! Return the starting LBA for the pregap for track number i_track.
Track numbers start at 1.
CDIO_INVALID_LBA is returned on error.
*/
lba_t
get_track_pregap_lba_image(const void *p_user_data, track_t i_track)
{
const _img_private_t *p_env = p_user_data;
lba_t pregap, start_lba;
pregap = p_env->tocent[i_track-p_env->gen.i_first_track].pregap;
start_lba = p_env->tocent[i_track-p_env->gen.i_first_track].start_lba;
/* avoid initializing pregap to CDIO_INVALID_LBA by letting calloc
do the work. also, nero files have the pregap set equal
to the start of the track when there is no pregap
*/
if (!pregap || pregap == start_lba) {
pregap = CDIO_INVALID_LBA;
}
return pregap;
}
/*!
Read a data sector