BIG REORGANIZATION.

Reorganize directory structure for inclusion of cd-paranoia. Works for
GNU/Linux. Other OS's may be broken. Regression test output needs to
be adjusted too.

Move:
lib/driver (split off of lib)
lib/iso9660 (split off of lib)

Add from paranoia:
lib/cdda_interface
lib/paranoia
src/paranoia

Also made some small changes to capability indentification to show
more reading capabilties and show that.

cd-info now shows the total disc size.

lib/cdda_interface/interface.c

@@ -0,0 +1,149 @@
+/******************************************************************
+ * CopyPolicy: GNU Public License 2 applies
+ * Copyright (C) 1998 Monty xiphmont@mit.edu
+ * 
+ * Top-level interface module for cdrom drive access.  SCSI, ATAPI, etc
+ *    specific stuff are in other modules.  Note that SCSI does use
+ *    specialized ioctls; these appear in common_interface.c where the
+ *    generic_scsi stuff is in scsi_interface.c.
+ *
+ ******************************************************************/
+
+#include "low_interface.h"
+#include "common_interface.h"
+#include "utils.h"
+
+static void _clean_messages(cdrom_drive_t *d)
+{
+  if(d){
+    if(d->messagebuf)free(d->messagebuf);
+    if(d->errorbuf)free(d->errorbuf);
+    d->messagebuf=NULL;
+    d->errorbuf=NULL;
+  }
+}
+
+/* doubles as "cdrom_drive_free()" */
+int 
+cdda_close(cdrom_drive_t *d)
+{
+  if(d){
+    if(d->opened)
+      d->enable_cdda(d,0);
+
+    _clean_messages(d);
+    if(d->cdda_device_name)free(d->cdda_device_name);
+    if(d->ioctl_device_name)free(d->ioctl_device_name);
+    if(d->drive_model)free(d->drive_model);
+    if(d->cdda_fd!=-1)close(d->cdda_fd);
+    if(d->ioctl_fd!=-1 && d->ioctl_fd!=d->cdda_fd)close(d->ioctl_fd);
+    if(d->sg)free(d->sg);
+    
+    free(d);
+  }
+  return(0);
+}
+
+/* finish initializing the drive! */
+int 
+cdda_open(cdrom_drive_t *d)
+{
+  int ret;
+  if(d->opened)return(0);
+
+  switch(d->interface){
+  case GENERIC_SCSI:  
+    if((ret=scsi_init_drive(d)))
+      return(ret);
+    break;
+  case COOKED_IOCTL:  
+    if((ret=cooked_init_drive(d)))
+      return(ret);
+    break;
+#ifdef CDDA_TEST
+  case TEST_INTERFACE:  
+    if((ret=test_init_drive(d)))
+      return(ret);
+    break;
+#endif
+  default:
+    cderror(d,"100: Interface not supported\n");
+    return(-100);
+  }
+  
+  /* Check TOC, enable for CDDA */
+  
+  /* Some drives happily return a TOC even if there is no disc... */
+  {
+    int i;
+    for(i=0;i<d->tracks;i++)
+      if(d->disc_toc[i].dwStartSector<0 ||
+	 d->disc_toc[i+1].dwStartSector==0){
+	d->opened=0;
+	cderror(d,"009: CDROM reporting illegal table of contents\n");
+	return(-9);
+      }
+  }
+
+  if((ret=d->enable_cdda(d,1)))
+    return(ret);
+    
+  /*  d->select_speed(d,d->maxspeed); most drives are full speed by default */
+  if(d->bigendianp==-1)d->bigendianp=data_bigendianp(d);
+  return(0);
+}
+
+int 
+cdda_speed_set(cdrom_drive_t *d, int speed)
+{
+  return d->set_speed ? d->set_speed(d, speed) : 0;
+}
+
+long cdda_read(cdrom_drive_t *d, void *buffer, long beginsector, long sectors)
+{
+  if(d->opened){
+    if(sectors>0){
+      sectors=d->read_audio(d,buffer,beginsector,sectors);
+
+      if(sectors!=-1){
+	/* byteswap? */
+	if(d->bigendianp==-1) /* not determined yet */
+	  d->bigendianp=data_bigendianp(d);
+	
+	if(d->bigendianp!=bigendianp()){
+	  int i;
+	  u_int16_t *p=(u_int16_t *)buffer;
+	  long els=sectors*CD_FRAMESIZE_RAW/2;
+	  
+	  for(i=0;i<els;i++)p[i]=swap16(p[i]);
+	}
+      }
+    }
+    return(sectors);
+  }
+  
+  cderror(d,"400: Device not open\n");
+  return(-400);
+}
+
+void 
+cdda_verbose_set(cdrom_drive_t *d,int err_action, int mes_action)
+{
+  d->messagedest=mes_action;
+  d->errordest=err_action;
+}
+
+extern char *cdda_messages(cdrom_drive_t *d)
+{
+  char *ret=d->messagebuf;
+  d->messagebuf=NULL;
+  return(ret);
+}
+
+extern char *cdda_errors(cdrom_drive_t *d)
+{
+  char *ret=d->errorbuf;
+  d->errorbuf=NULL;
+  return(ret);
+}
+