cdio.{c,h}: moved various reading and device/driver routines out into the below

read.{c,h}: separate include for the reading routines.
disc.{c,h}: more moved here from corresponding cdio.
device.c: a place for device/driver related routines.
interface.c: break up line to make debugging easier.

include/cdio/read.h

@@ -0,0 +1,141 @@
+/* -*- c -*-
+    $Id: read.h,v 1.1 2005/01/09 16:07:46 rocky Exp $
+
+    Copyright (C) 2005 Rocky Bernstein <rocky@panix.com>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/** \file read.h 
+ *
+ *  \brief The top-level header for sector (block, frame)-related
+ *  libcdio calls. 
+ */
+
+#ifndef __CDIO_READ_H__
+#define __CDIO_READ_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+  /*!
+    Reposition read offset
+    Similar to (if not the same as) libc's lseek()
+
+    @param p_cdio object to get information from
+    @param offset amount to seek
+    @param whence  like corresponding parameter in libc's lseek, e.g. 
+                   SEEK_SET or SEEK_END.
+    @return (off_t) -1 on error. 
+  */
+
+  off_t cdio_lseek(const CdIo_t *p_cdio, off_t offset, int whence);
+    
+  /*!
+    Reads into buf the next size bytes.
+    Similar to (if not the same as) libc's read()
+
+    @return (ssize_t) -1 on error. 
+  */
+  ssize_t cdio_read(const CdIo_t *p_cdio, void *p_buf, size_t i_size);
+    
+  /*!
+    Read an audio sector
+
+    @param p_cdio object to read from
+    @param buf place to read data into
+    @param lsn sector to read
+
+    @return 0 if no error, nonzero otherwise.
+  */
+  int cdio_read_audio_sector (const CdIo_t *p_cdio, void *p_buf, lsn_t i_lsn);
+
+  /*!
+    Reads audio sectors
+
+    @param p_cdio object to read from
+    @param buf place to read data into
+    @param lsn sector to read
+    @param i_sectors number of sectors to read
+
+    @return 0 if no error, nonzero otherwise.
+  */
+  int cdio_read_audio_sectors (const CdIo_t *p_cdio, void *buf, lsn_t lsn,
+			       unsigned int i_sectors);
+
+  /*!
+    Reads a mode 1 sector
+
+    @param p_cdio object to read from
+    @param buf place to read data into
+    @param lsn sector to read
+    @param b_form2 true for reading mode 1 form 2 sectors or false for 
+    mode 1 form 1 sectors.
+
+    @return 0 if no error, nonzero otherwise.
+  */
+  int cdio_read_mode1_sector (const CdIo_t *p_cdio, void *p_buf, lsn_t i_lsn, 
+			      bool b_form2);
+  
+  /*!
+    Reads mode 1 sectors
+
+    @param p_cdio object to read from
+    @param buf place to read data into
+    @param lsn sector to read
+    @param b_form2 true for reading mode 1 form 2 sectors or false for 
+    mode 1 form 1 sectors.
+    @param i_sectors number of sectors to read
+
+    @return 0 if no error, nonzero otherwise.
+  */
+  int cdio_read_mode1_sectors (const CdIo_t *p_cdio, void *p_buf, lsn_t i_lsn, 
+			       bool b_form2, unsigned int i_sectors);
+  
+  /*!
+    Reads a mode 2 sector
+
+    @param p_cdio object to read from
+    @param buf place to read data into
+    @param lsn sector to read
+    @param b_form2 true for reading mode 2 form 2 sectors or false for 
+    mode 2 form 1 sectors.
+
+    @return 0 if no error, nonzero otherwise.
+  */
+  int cdio_read_mode2_sector (const CdIo_t *p_cdio, void *p_buf, lsn_t i_lsn, 
+			      bool b_form2);
+  
+  /*!
+    Reads mode 2 sectors
+
+    @param p_cdio object to read from
+    @param buf place to read data into
+    @param lsn sector to read
+    @param b_form2 true for reading mode2 form 2 sectors or false for 
+    mode 2  form 1 sectors.
+    @param i_sectors number of sectors to read
+
+    @return 0 if no error, nonzero otherwise.
+  */
+  int cdio_read_mode2_sectors (const CdIo_t *p_cdio, void *p_buf, lsn_t i_lsn, 
+			       bool b_form2, unsigned int i_sectors);
+  
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __CDIO_TRACK_H__ */