/*
  Copyright (C) 2005, 2008 Rocky Bernstein <rocky@gnu.org>
  Copyright (C) 2014 Robert Kausch <robert.kausch@freac.org>
  Copyright (C) 1998 Monty xiphmont@mit.edu

  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 3 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, see <http://www.gnu.org/licenses/>.
*/
/******************************************************************
 * 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 "common_interface.h"
#include "low_interface.h"
#include "utils.h"
#include <cdio/bytesex.h>
#include <cdio/mmc.h>
#include <cdio/paranoia/version.h>

extern const char *cdio_cddap_version(void){
  return LIBCDIO_PARANOIA_VERSION;
}

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;
  }
}

/*!
  Closes d and releases all storage associated with it except
  the internal p_cdio pointer.

  @param d cdrom_drive_t object to be closed.
  @return 0 if passed a null pointer and 1 if not in which case
  some work was probably done.

  @see cdio_cddap_close
*/
bool
cdio_cddap_close_no_free_cdio(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->drive_model)      free(d->drive_model);
    d->cdda_device_name = d->drive_model = NULL;
    free(d);
    return true;
  }
  return false;
}

/*!
  Closes d and releases all storage associated with it.
  Doubles as "cdrom_drive_free()".

  @param d cdrom_drive_t object to be closed.
  @return 0 if passed a null pointer and 1 if not in which case
  some work was probably done.

  @see cdio_cddap_close_no_free_cdio
*/
int
cdio_cddap_close(cdrom_drive_t *d)
{
  if (d) {
    CdIo_t *p_cdio = d->p_cdio;
    cdio_cddap_close_no_free_cdio(d);
    cdio_destroy (p_cdio);
    return 1;
  }
  return 0;
}

/* finish initializing the drive! */
int
cdio_cddap_open(cdrom_drive_t *d)
{
  int ret;
  if(d->opened)return(0);

  if ( (ret=cddap_init_drive(d)) )
    return(ret);

  /* 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 ( -1 == d->bigendianp ) {
    d->bigendianp = data_bigendianp(d);
  }


  return(0);
}

int
cdio_cddap_speed_set(cdrom_drive_t *d, int speed)
{
  if(d->set_speed)
    if(!d->set_speed(d, speed))return 0;

  cderror(d,"405: Option not supported by drive\n");
  return -405;
}

long
cdio_cddap_read_timed(cdrom_drive_t *d, void *buffer, lsn_t beginsector,
		long sectors, int *ms)
{
  if(ms)*ms= -1;
  if (d->opened) {
    if (sectors>0) {
      sectors=d->read_audio(d, buffer, beginsector, sectors);

      if (sectors > 0) {
	/* byteswap? */
	if ( d->bigendianp == -1 ) /* not determined yet */
	  d->bigendianp = data_bigendianp(d);

	if ( d->b_swap_bytes && d->bigendianp != bigendianp() ) {
	  int i;
	  uint16_t *p=(uint16_t *)buffer;
	  long els=sectors*CDIO_CD_FRAMESIZE_RAW/2;

	  for(i=0;i<els;i++)
	    p[i]=UINT16_SWAP_LE_BE_C(p[i]);
	}
      }
    }
    if(ms)*ms=d->last_milliseconds;
    return(sectors);
  }

  cderror(d,"400: Device not open\n");
  return(-400);
}

long cdio_cddap_read(cdrom_drive_t *d, void *buffer, lsn_t beginsector, long sectors){
  return cdda_read_timed(d,buffer,beginsector,sectors,NULL);
}

void
cdio_cddap_verbose_set(cdrom_drive_t *d,int err_action, int mes_action)
{
  d->messagedest=mes_action;
  d->errordest=err_action;
}

extern char *
cdio_cddap_messages(cdrom_drive_t *d)
{
  char *ret=d->messagebuf;
  d->messagebuf=NULL;
  return(ret);
}

extern char *
cdio_cddap_errors(cdrom_drive_t *d)
{
  char *ret=d->errorbuf;
  d->errorbuf=NULL;
  return(ret);
}

extern void
cdio_cddap_free_messages(char *psz_messages)
{
  if (psz_messages != NULL)
    free(psz_messages);
}
