gstcdparanoia.c 24.6 KB
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/* GStreamer
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 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

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/* #define GST_DEBUG_ENABLED */
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
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/* taken from linux/cdrom.h */
#define CD_MSF_OFFSET       150 /* MSF numbering offset of first frame */
#define CD_SECS              60 /* seconds per minute */
#define CD_FRAMES            75 /* frames per second */
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#include "gstcdparanoia.h"


static GstElementDetails cdparanoia_details = {
  "CD Audio (cdda) Source, Paranoia IV",
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  "Source/File",
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  "Read audio from CD in paranoid mode",
  VERSION,
  "Erik Walthinsen <omega@cse.ogi.edu>",
  "(C) 2000",
};

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GST_PAD_TEMPLATE_FACTORY (cdparanoia_src_factory,
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  "src",
  GST_PAD_SRC,
  GST_PAD_ALWAYS,
  GST_CAPS_NEW (
    "cdparanoia_src",
    "audio/raw",
      "format",   GST_PROPS_STRING ("int"),
        "law",        GST_PROPS_INT (0),
        "endianness", GST_PROPS_INT (G_BYTE_ORDER),
        "signed",     GST_PROPS_BOOLEAN (TRUE),
        "width",      GST_PROPS_INT (16),
        "depth",      GST_PROPS_INT (16),
        "rate",       GST_PROPS_INT (44100),
        "channels",   GST_PROPS_INT (2),
        "chunksize",  GST_PROPS_INT (CD_FRAMESIZE_RAW)
  )
);


/********** Define useful types for non-programmatic interfaces **********/
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#define GST_TYPE_PARANOIA_MODE (gst_paranoia_mode_get_type())
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static GType
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gst_paranoia_mode_get_type (void)
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{
  static GType paranoia_mode_type = 0;
  static GEnumValue paranoia_modes[] = {
    { 0, "0", "Disable paranoid checking" },
    { 1, "1", "cdda2wav-style overlap checking" },
    { 2, "2", "Full paranoia" },
    { 0, NULL, NULL },
  };
  if (!paranoia_mode_type) {
    paranoia_mode_type = g_enum_register_static ("GstParanoiaMode", paranoia_modes);
  }
  return paranoia_mode_type;
}


/********** Standard stuff for signals and arguments **********/
/* CDParanoia signals and args */
enum {
  SMILIE_CHANGE,
  TRANSPORT_ERROR,
  UNCORRECTED_ERROR,
  LAST_SIGNAL
};

enum {
  ARG_0,
  ARG_LOCATION,
  ARG_GENERIC_DEVICE,
  ARG_START_TRACK,
  ARG_END_TRACK,
  ARG_LAST_TRACK,
  ARG_CUR_TRACK,
  ARG_START_SECTOR,
  ARG_END_SECTOR,
  ARG_CUR_SECTOR,
  ARG_DEFAULT_SECTORS,
  ARG_SEARCH_OVERLAP,
  ARG_ENDIAN,
  ARG_READ_SPEED,
  ARG_TOC_OFFSET,
  ARG_TOC_BIAS,
  ARG_NEVER_SKIP,
  ARG_ABORT_ON_SKIP,
  ARG_PARANOIA_MODE,
  ARG_SMILIE,
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  ARG_NO_TRACKS,
  ARG_DISCID,
  ARG_OFFSETS,
  ARG_TOTAL_TIME,
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};


static void			cdparanoia_class_init		(CDParanoiaClass *klass);
static void			cdparanoia_init			(CDParanoia *cdparanoia);

static void			cdparanoia_set_property		(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void			cdparanoia_get_property		(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);

static GstBuffer*		cdparanoia_get			(GstPad *pad);

static GstElementStateReturn	cdparanoia_change_state		(GstElement *element);


static GstElementClass *parent_class = NULL;
static guint cdparanoia_signals[LAST_SIGNAL] = { 0 };

GType
cdparanoia_get_type (void)
{
  static GType cdparanoia_type = 0;

  if (!cdparanoia_type) {
    static const GTypeInfo cdparanoia_info = {
      sizeof(CDParanoiaClass),      NULL,
      NULL,
      (GClassInitFunc)cdparanoia_class_init,
      NULL,
      NULL,
      sizeof(CDParanoia),
      0,
      (GInstanceInitFunc)cdparanoia_init,
    };
    cdparanoia_type = g_type_register_static (GST_TYPE_ELEMENT, "CDParanoia", &cdparanoia_info, 0);
  }
  return cdparanoia_type;
}

static void
cdparanoia_class_init (CDParanoiaClass *klass)
{
  GObjectClass *gobject_class;
  GstElementClass *gstelement_class;
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  char *success = strerror_tr[0];
  success = NULL;
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  gobject_class = (GObjectClass*)klass;
  gstelement_class = (GstElementClass*)klass;

  parent_class = g_type_class_ref (GST_TYPE_ELEMENT);

  cdparanoia_signals[SMILIE_CHANGE] =
    g_signal_new ("smilie_change", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
                   G_STRUCT_OFFSET (CDParanoiaClass, smilie_change), NULL, NULL,
                   g_cclosure_marshal_VOID__STRING, G_TYPE_NONE, 1, G_TYPE_STRING);
  cdparanoia_signals[TRANSPORT_ERROR] =
    g_signal_new ("transport_error", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
                   G_STRUCT_OFFSET (CDParanoiaClass, transport_error), NULL, NULL,
                   g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
  cdparanoia_signals[UNCORRECTED_ERROR] =
    g_signal_new ("uncorrected_error", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
                   G_STRUCT_OFFSET (CDParanoiaClass, uncorrected_error), NULL, NULL,
                   g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);

  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_LOCATION,
    g_param_spec_string("location","location","location",
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                        NULL, G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_GENERIC_DEVICE,
    g_param_spec_string("generic_device","generic_device","generic_device",
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                        NULL, G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_START_TRACK,
    g_param_spec_int("start_track","start_track","start_track",
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                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_END_TRACK,
    g_param_spec_int("end_track","end_track","end_track",
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                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_LAST_TRACK,
    g_param_spec_int("last_track","last_track","last_track",
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                     G_MININT,G_MAXINT,0,G_PARAM_READABLE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CUR_TRACK,
    g_param_spec_int("cur_track","cur_track","cur_track",
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                     G_MININT,G_MAXINT,0,G_PARAM_READABLE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_START_SECTOR,
    g_param_spec_int("start_sector","start_sector","start_sector",
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                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_END_SECTOR,
    g_param_spec_int("end_sector","end_sector","end_sector",
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                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CUR_SECTOR,
    g_param_spec_int("cur_sector","cur_sector","cur_sector",
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                     G_MININT,G_MAXINT,0,G_PARAM_READABLE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEFAULT_SECTORS,
    g_param_spec_int("default_sectors","default_sectors","default_sectors",
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                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_SEARCH_OVERLAP,
    g_param_spec_int("search_overlap","search_overlap","search_overlap",
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                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ENDIAN,
    g_param_spec_int("endian","endian","endian",
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                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_READ_SPEED,
    g_param_spec_int("read_speed","read_speed","read_speed",
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                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TOC_OFFSET,
    g_param_spec_int("toc_offset","toc_offset","toc_offset",
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                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TOC_BIAS,
    g_param_spec_boolean("toc_bias","toc_bias","toc_bias",
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                         TRUE,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_NEVER_SKIP,
    g_param_spec_boolean("never_skip","never_skip","never_skip",
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                         TRUE,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ABORT_ON_SKIP,
    g_param_spec_boolean("abort_on_skip","abort_on_skip","abort_on_skip",
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                         TRUE,G_PARAM_READWRITE)); /* CHECKME */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_PARANOIA_MODE,
    g_param_spec_enum("paranoia_mode","paranoia_mode","paranoia_mode",
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                      GST_TYPE_PARANOIA_MODE,0,G_PARAM_READWRITE)); /* CHECKME! */
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  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_NO_TRACKS,
    g_param_spec_int("no_tracks","no_tracks","no_tracks",
		      0,G_MAXINT,0,G_PARAM_READABLE));
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DISCID,
    g_param_spec_string("discid","discid","discid",
	    		NULL, G_PARAM_READABLE));
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_OFFSETS,
    g_param_spec_string("offsets","offsets","offsets",
	    		NULL, G_PARAM_READABLE));
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TOTAL_TIME,
    g_param_spec_string("total_time","total_time","total_time",
		      	NULL, G_PARAM_READABLE));
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  gobject_class->set_property = cdparanoia_set_property;
  gobject_class->get_property = cdparanoia_get_property;

  gstelement_class->change_state = cdparanoia_change_state;
}

static void
cdparanoia_init (CDParanoia *cdparanoia)
{
  cdparanoia->srcpad = gst_pad_new_from_template (
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		  GST_PAD_TEMPLATE_GET (cdparanoia_src_factory), "src");
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  gst_pad_set_get_function (cdparanoia->srcpad, cdparanoia_get);
  gst_element_add_pad (GST_ELEMENT (cdparanoia), cdparanoia->srcpad);

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  cdparanoia->device = g_strdup ("/dev/cdrom");
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  cdparanoia->generic_device = NULL;
  cdparanoia->start_sector = -1;
  cdparanoia->end_sector = -1;
  cdparanoia->cur_sector = -1;
  cdparanoia->start_track = -1;
  cdparanoia->cur_track = -1;
  cdparanoia->end_track = -1;
  cdparanoia->last_track = -1;
  cdparanoia->default_sectors = -1;
  cdparanoia->search_overlap = -1;
  cdparanoia->endian = -1;
  cdparanoia->read_speed = -1;
  cdparanoia->toc_offset = 0;
  cdparanoia->toc_bias = FALSE;
  cdparanoia->never_skip = FALSE;
  cdparanoia->paranoia_mode = 2;
  cdparanoia->abort_on_skip = FALSE;

  cdparanoia->cur_sector = 0;
  cdparanoia->seq = 0;
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  cdparanoia->no_tracks=0;
  cdparanoia->discid=NULL;
  cdparanoia->offsets=NULL;
  cdparanoia->total_seconds=0;
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}


static void
cdparanoia_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
  CDParanoia *src;

  /* it's not null if we got it, but it might not be ours */
  g_return_if_fail (GST_IS_CDPARANOIA (object));

  src = CDPARANOIA (object);

  switch (prop_id) {
    case ARG_LOCATION:
      /* the element must be stopped in order to do this */
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/*      g_return_if_fail(!GST_FLAG_IS_SET(src,GST_STATE_RUNNING)); */
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      if (src->device) g_free (src->device);
      /* clear the filename if we get a NULL (is that possible?) */
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      if (!g_ascii_strcasecmp( g_value_get_string (value),""))
	 src->device = NULL;
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      /* otherwise set the new filename */
      else
        src->device = g_strdup (g_value_get_string (value));
      break;
    case ARG_GENERIC_DEVICE:
      /* the element must be stopped in order to do this */
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/*      g_return_if_fail(!GST_FLAG_IS_SET(src,GST_STATE_RUNNING)); */
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      if (src->generic_device) g_free (src->generic_device);
      /* reset the device if we get a NULL (is that possible?) */
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      if (!g_ascii_strcasecmp( g_value_get_string (value),""))
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        src->generic_device = NULL;
      /* otherwise set the new filename */
      else
        src->generic_device = g_strdup (g_value_get_string (value));
      break;
    case ARG_START_SECTOR:
      src->start_sector = g_value_get_int (value);
      break;
    case ARG_END_SECTOR:
      src->end_sector = g_value_get_int (value);
      break;
    case ARG_START_TRACK:
      src->start_track = g_value_get_int (value);
      break;
    case ARG_END_TRACK:
      src->end_track = g_value_get_int (value);
      break;  
    case ARG_DEFAULT_SECTORS:
      src->default_sectors = g_value_get_int (value);
      break;
    case ARG_SEARCH_OVERLAP:
      src->search_overlap = g_value_get_int (value);
      break;
    case ARG_ENDIAN:
      src->endian = g_value_get_int (value);
      break;
    case ARG_READ_SPEED:
      src->read_speed = g_value_get_int (value);
      break;
    case ARG_TOC_OFFSET:
      src->toc_offset = g_value_get_int (value);
      break;
    case ARG_TOC_BIAS:
      src->toc_bias = g_value_get_boolean (value);
      break;
    case ARG_NEVER_SKIP:
      src->never_skip = g_value_get_boolean (value);
      break;
    case ARG_ABORT_ON_SKIP:
      src->abort_on_skip = g_value_get_boolean (value);
      break;
    case ARG_PARANOIA_MODE:
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      src->paranoia_mode = g_value_get_enum (value);
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      break;
    default:
      break;
  }

}

static void
cdparanoia_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
  CDParanoia *src;

  /* it's not null if we got it, but it might not be ours */
  g_return_if_fail (GST_IS_CDPARANOIA (object));

  src = CDPARANOIA (object);

  switch (prop_id) {
    case ARG_LOCATION:
      g_value_set_string (value, src->device);
      break;
    case ARG_GENERIC_DEVICE:
      g_value_set_string (value, src->generic_device);
      break;
    case ARG_START_SECTOR:
      g_value_set_int (value, src->start_sector);
      break;
    case ARG_END_SECTOR:
      g_value_set_int (value, src->end_sector);
      break;
    case ARG_CUR_SECTOR:
      g_value_set_int (value, src->cur_sector);
      break;
    case ARG_START_TRACK:
      g_value_set_int (value, src->start_track);
      break;
    case ARG_END_TRACK:
      g_value_set_int (value, src->end_track);
      break;
    case ARG_CUR_TRACK:
      g_value_set_int (value, src->cur_track);
      break;
    case ARG_LAST_TRACK:
      g_value_set_int (value, src->last_track);
      break;
    case ARG_DEFAULT_SECTORS:
      g_value_set_int (value, src->default_sectors);
      break;
    case ARG_SEARCH_OVERLAP:
      g_value_set_int (value, src->search_overlap);
      break;
    case ARG_ENDIAN:
      g_value_set_int (value, src->endian);
      break;
    case ARG_READ_SPEED:
      g_value_set_int (value, src->read_speed);
      break;
    case ARG_TOC_OFFSET:
      g_value_set_int (value, src->toc_offset);
      break;
    case ARG_TOC_BIAS:
      g_value_set_boolean (value, src->toc_bias);
      break;
    case ARG_NEVER_SKIP:
      g_value_set_boolean (value, src->never_skip);
      break;
    case ARG_ABORT_ON_SKIP:
      g_value_set_boolean (value, src->abort_on_skip);
      break;
    case ARG_PARANOIA_MODE:
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      g_value_set_enum (value, src->paranoia_mode);
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      break;
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    case ARG_NO_TRACKS:
      g_value_set_int (value, src->no_tracks);
      break;
    case ARG_DISCID:
      g_value_set_string(value, src->discid);
      break;      
    case ARG_OFFSETS:
      g_value_set_string(value, src->offsets);
      break;
    case ARG_TOTAL_TIME:
      g_value_set_string(value, src->total_seconds);
      break;
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    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
  }
}

static void cdparanoia_callback(long inpos, int function) {
}

static GstBuffer*
cdparanoia_get (GstPad *pad)
{
  CDParanoia *src;
  GstBuffer *buf;
  static gint16 *cdda_buf;

  g_return_val_if_fail (pad != NULL, NULL);
  src = CDPARANOIA (gst_pad_get_parent (pad));
  g_return_val_if_fail (GST_FLAG_IS_SET (src, CDPARANOIA_OPEN), NULL);

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  /* create a new buffer */
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  buf = gst_buffer_new ();
  g_return_val_if_fail (buf, NULL);

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  /* read a sector */
/* NOTE: if you have a patched cdparanoia, set this to 1 to save cycles */
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#if 0
  cdda_buf = paranoia_read (src->p, NULL);
#else
  cdda_buf = paranoia_read (src->p, cdparanoia_callback);
#endif

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  /* update current sector and stop things if appropriate */
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  src->cur_sector++;

  if (src->cur_sector == src->end_sector) {
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    GST_DEBUG (0,"setting EOS");
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    gst_element_set_eos(GST_ELEMENT(src));
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    buf = GST_BUFFER (gst_event_new (GST_EVENT_EOS));
  }
  else {
    src->cur_track = cdda_sector_gettrack( src->d, src->cur_sector );

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    /* have to copy the buffer for now since we don't own it... */
    /* FIXME must ask monty about allowing ownership transfer */
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    GST_BUFFER_DATA (buf) = g_malloc(CD_FRAMESIZE_RAW);
    memcpy (GST_BUFFER_DATA (buf), cdda_buf, CD_FRAMESIZE_RAW);
    GST_BUFFER_SIZE (buf) = CD_FRAMESIZE_RAW;
  }
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  /* we're done, push the buffer off now */
  return buf;
}

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/* need some stuff to get a discid (cdparanoia doesn't do cddb but lets
 * not stop other ppl doing it ;-) */
typedef int byte;

typedef struct
{
	byte m;
	byte s;
	byte f;
}toc_msf;

/* cdparanoia provides the toc in lba format dang we need it in msf so
 * we have to convert it */
static inline void lba_to_msf (const gint lba, byte *m, byte *s, byte *f)
{
	gint lba2 = lba;
	lba2 += CD_MSF_OFFSET;
	lba2 &= 0xffffff;
	*m = lba2 / (CD_SECS * CD_FRAMES);
	lba2 %= (CD_SECS * CD_FRAMES);
	*s = lba2 / CD_FRAMES;
	*f = lba2 % CD_FRAMES;
	*f += (*m)*60*75;
	*f += (*s)*75;	
}

void lba_toc_to_msf_toc (TOC *lba_toc, toc_msf *
		msf_toc, gint tracks)
{
	gint i;
	for (i =0; i <= tracks; i++)
		lba_to_msf(lba_toc[i].dwStartSector,&msf_toc[i].m,
				&msf_toc[i].s, &msf_toc[i].f);
}

/* the cddb hash function */
guint cddb_sum(gint n) 
{
	guint ret;
	ret = 0;
	while (n > 0) 
	{
		ret += (n % 10);
		n /= 10;
	}
	return ret;
}

void cddb_discid(gchar *discid,toc_msf *toc, gint tracks)
{
	guint i = 0, t = 0, n = 0;

	while (i < tracks)
	{
		n = n + cddb_sum((toc[i].m * 60) + toc[i].s);
		i++;
	}
	t = ((toc[tracks].m * 60) + toc[tracks].s) - ((toc[0].m * 60)
			+ toc[0].s);

	sprintf (discid,"%08x",(( n % 0xff) << 24 | t << 8 | tracks));
}

/* get all the cddb info at once */
void get_cddb_info(TOC *toc, gint tracks,gchar *discid, gchar *offsets,
		gchar *total_seconds)
{
	toc_msf 	msf_toc[MAXTRK];
	gint		i;
	gchar		*p = offsets;

	lba_toc_to_msf_toc(toc, &msf_toc[0],tracks);
	cddb_discid ( discid,  &msf_toc[0], tracks);	

	for (i = 0; i < tracks; i++)
		p = (p + sprintf (p, " %d", msf_toc[i].f)) ;

	sprintf (total_seconds, "%d", msf_toc[tracks].f/75);
	
}

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/* open the file, necessary to go to RUNNING state */
static gboolean
cdparanoia_open (CDParanoia *src)
{
  gint i;
  gint paranoia_mode;

  g_return_val_if_fail (!GST_FLAG_IS_SET (src, CDPARANOIA_OPEN), FALSE);

  GST_DEBUG_ENTER("(\"%s\",...)", gst_element_get_name (GST_ELEMENT (src)));

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  /* find the device */
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  if (src->generic_device != NULL) {
    src->d = cdda_identify_scsi (src->generic_device, src->device, FALSE, NULL);
  } else {
    if (src->device != NULL) {
      src->d = cdda_identify (src->device, FALSE, NULL);
    } else {
      src->d = cdda_identify ("/dev/cdrom", FALSE, NULL);
    }
  }

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  /* fail if the device couldn't be found */
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  if (src->d == NULL) {
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    GST_DEBUG (0,"couldn't open device");
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    return FALSE;
  }

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  /* set verbosity mode */
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  cdda_verbose_set (src->d, CDDA_MESSAGE_FORGETIT, CDDA_MESSAGE_FORGETIT);

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  /* set various other parameters */
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  if (src->default_sectors != -1) {
    if ((src->default_sectors < 0) || (src->default_sectors > 100)) {
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      GST_DEBUG (0,"default sector read size must be 1 <= n <= 100");
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      cdda_close (src->d);
      src->d = NULL;
      return FALSE;
    } else {
      src->d->nsectors = src->default_sectors;
      src->d->bigbuff = src->default_sectors * CD_FRAMESIZE_RAW;
    }
  }
  if (src->search_overlap != -1) {
    if ((src->search_overlap < 0) || (src->search_overlap > 75)) {
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      GST_DEBUG (0,"search overlap must be 0 <= n <= 75");
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      cdda_close (src->d);
      src->d = NULL;
      return FALSE;
    }
  }

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  /* open the disc */
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  if (cdda_open (src->d)) {
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    GST_DEBUG (0,"couldn't open disc");
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    cdda_close (src->d);
    src->d = NULL;
    return FALSE;
  }

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  /* set up some more stuff */
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  src->no_tracks = src->d->tracks;

  g_assert(src->discid == NULL);
  g_assert(src->offsets == NULL);
  g_assert(src->total_seconds == NULL);

  /* I don't like this here i would prefer it under get_cddb_info but for somereason
   * when leaving the function it clobbers the allocated mem and all is lost bugger
  */
   
  src->discid 		= g_new0(gchar,20) ;
  src->offsets 		= g_new0(gchar,4096);
  src->total_seconds 	= g_new0(gchar, 4);

  get_cddb_info(&src->d->disc_toc[0], src->no_tracks,src->discid,
		  src->offsets,src->total_seconds);
	
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  if (src->toc_bias) {
    src->toc_offset -= cdda_track_firstsector (src->d, 1);
  }
  for (i=0;i<src->d->tracks + 1;i++) {
    src->d->disc_toc[i].dwStartSector += src->toc_offset;
  }

  if (src->read_speed != -1) {
    cdda_speed_set (src->d, src->read_speed);
  }

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  /* if the start_track is set, override the start_sector */
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  if (src->start_track != -1) {
    src->start_sector = cdda_track_firstsector (src->d, src->start_track);
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  /* if neither start_track nor start_sector is set, */
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  } else if (src->start_sector == -1) {
    src->start_sector = cdda_disc_firstsector (src->d);
  }
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  /* if the end_track is set, override the end_sector */
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  if (src->end_track != -1) {
    src->end_sector = cdda_track_lastsector (src->d, src->end_track);
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  /* if neither end_track nor end_sector is set, */
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  } else if (src->end_sector == -1) {
    src->end_sector = cdda_disc_lastsector (src->d);
  }

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  /* set last_track */
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  src->last_track = cdda_tracks (src->d);

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  /* create the paranoia struct and set it up */
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  src->p = paranoia_init (src->d);
  if (src->p == NULL) {
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    GST_DEBUG (0,"couldn't create paranoia struct");
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    return FALSE;
  }

  if (src->paranoia_mode == 0) paranoia_mode = PARANOIA_MODE_DISABLE;
  else if (src->paranoia_mode == 1) paranoia_mode = PARANOIA_MODE_OVERLAP;
  else paranoia_mode = PARANOIA_MODE_FULL;
  if (src->never_skip) paranoia_mode |= PARANOIA_MODE_NEVERSKIP;
  paranoia_modeset (src->p, paranoia_mode);

  if (src->search_overlap != -1) {
    paranoia_overlapset (src->p, src->search_overlap);
  }

  src->cur_sector = src->start_sector;
  paranoia_seek (src->p, src->cur_sector, SEEK_SET);
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  GST_DEBUG (0,"successfully seek'd to beginning of disk");
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  GST_FLAG_SET (src, CDPARANOIA_OPEN);

  GST_DEBUG_LEAVE("");

  return TRUE;
}

/* close the file */
static void
cdparanoia_close (CDParanoia *src)
{
  g_return_if_fail (GST_FLAG_IS_SET (src, CDPARANOIA_OPEN));

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  /* kill the paranoia state */
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  paranoia_free (src->p);
  src->p = NULL;
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  g_free(src->discid);
  src->discid = NULL;
  
  g_free(src->offsets);
  src->offsets = NULL;
  
  g_free(src->total_seconds);
  src->total_seconds = NULL;
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  /* close the disc */
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  cdda_close (src->d);
  src->d = NULL;

  GST_FLAG_UNSET (src, CDPARANOIA_OPEN);
}

static GstElementStateReturn
cdparanoia_change_state (GstElement *element)
{
  g_return_val_if_fail (GST_IS_CDPARANOIA (element), GST_STATE_FAILURE);

  /* if going down into NULL state, close the file if it's open */
  if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
    if (GST_FLAG_IS_SET (element, CDPARANOIA_OPEN))
      cdparanoia_close (CDPARANOIA (element));
  /* otherwise (READY or higher) we need to open the file */
  } else {
    if (!GST_FLAG_IS_SET (element, CDPARANOIA_OPEN)) {
      if (!cdparanoia_open (CDPARANOIA (element))) {
        g_print("failed opening cd\n");
        return GST_STATE_FAILURE;
      }
    }
  }

  /* if we haven't failed already, give the parent class a chance too ;-) */
  if (GST_ELEMENT_CLASS (parent_class)->change_state)
    return GST_ELEMENT_CLASS (parent_class)->change_state (element);

  return GST_STATE_SUCCESS;
}

static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
  GstElementFactory *factory;

  /* create an elementfactory for the cdparanoia element */
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  factory = gst_element_factory_new ("cdparanoia", GST_TYPE_CDPARANOIA,
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                                    &cdparanoia_details);
  g_return_val_if_fail (factory != NULL, FALSE);

  /* register the source's caps */
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  gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (cdparanoia_src_factory));
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  /* and add the cdparanoia element factory to the plugin */
  gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));

  return TRUE;
}

GstPluginDesc plugin_desc = {
  GST_VERSION_MAJOR,
  GST_VERSION_MINOR,
  "cdparanoia",
  plugin_init
};