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/************************************************************************/
/* */
/* Centre for Speech Technology Research */
/* University of Edinburgh, UK */
/* Copyright (c) 1996,1997 */
/* All Rights Reserved. */
/* */
/* Permission is hereby granted, free of charge, to use and distribute */
/* this software and its documentation without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of this work, and to */
/* permit persons to whom this work is furnished to do so, subject to */
/* the following conditions: */
/* 1. The code must retain the above copyright notice, this list of */
/* conditions and the following disclaimer. */
/* 2. Any modifications must be clearly marked as such. */
/* 3. Original authors' names are not deleted. */
/* 4. The authors' names are not used to endorse or promote products */
/* derived from this software without specific prior written */
/* permission. */
/* */
/* THE UNIVERSITY OF EDINBURGH AND THE CONTRIBUTORS TO THIS WORK */
/* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */
/* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */
/* SHALL THE UNIVERSITY OF EDINBURGH NOR THE CONTRIBUTORS BE LIABLE */
/* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */
/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */
/* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */
/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
/* THIS SOFTWARE. */
/* */
/************************************************************************/
#ifndef __EST_TRACKMAP_H__
#define __EST_TRACKMAP_H__
#include <climits>
using namespace std;
#include "EST_TNamedEnum.h"
#include "EST_ChannelType.h"
#include "EST_Handleable.h"
#include "EST_THandle.h"
/** Track maps provide a mapping from symbolic track names to the
* actual position of the information within a track frame. The
* symbolic names are defined by the EST_ChannelType enumerated type.
*
* Track maps can be declared statically by code which always uses
* tracks of a given style, or they can be built at run time as
* is done by lpc_analysis to record whichinformation the
* user has requested. Finally they can be constructed by the Track
* itself from the names of the channels, for instance when a track has
* just been read in from a file.
*
* @see EST_Track
* @see EST_ChannelType
* @see EST_TrackMap:example
* @author Richard Caley <rjc@cstr.ed.ac.uk>
* @version $Id: EST_TrackMap.h,v 1.4 2004/09/29 08:24:17 robert Exp $
*/
class EST_TrackMap : public EST_Handleable
{
public:
/**@name ChannelMapping
* An auxiliary type used just to define static EST_TrackMaps.
* Defining one of these and then converting it to an EST_TrackMap
* is, unfortunately, the only way C++ allows us to define
* a constant EST_TrackMap.
*/
//@{
/// structure for the table.
struct ChannelMappingElement {
EST_ChannelType type;
unsigned short channel;
};
/// Table of type to position pairs.
// typedef struct ChannelMappingElement ChannelMapping[];
//@}
typedef EST_THandle<EST_TrackMap,EST_TrackMap> P;
public:
/// Returned if we ask for a channel not in the map.
# define NO_SUCH_CHANNEL (-1)
private:
/// The map itself.
short p_map[num_channel_types];
/// Parent is looked at if this map doesn't define the position.
EST_TrackMap::P p_parent;
/// Subtracted from the values in the parent.
int p_offset;
/// No copy constructor. Don't copy these things.
EST_TrackMap(EST_TrackMap &from);
protected:
/// Pass to creation function to turn on refcounting.
#define EST_TM_REFCOUNTED (1)
/// Creation function used by friends to create refcounted maps.
EST_TrackMap(int refcount);
/// Creation function used by friends to create sub-track maps.
EST_TrackMap(const EST_TrackMap *parent, int offset, int refcount);
/// copy an exiting map.
void copy(EST_TrackMap &from);
/// Initialise the map.
void init(void);
short get_parent(EST_ChannelType type) const ;
public:
/// Default constructor.
EST_TrackMap(void);
/// Copy the mapping.
EST_TrackMap(EST_TrackMap &from, int refcount);
/// Create from static table.
EST_TrackMap(struct ChannelMappingElement map[]);
~EST_TrackMap();
/// Empty the map.
void clear(void);
/// Record the position of a channel.
void set(EST_ChannelType type, short pos)
{ p_map[(int)type] = pos; }
/// Get the position of a channel.
short get(EST_ChannelType type) const
{ short c = p_map[(int)type];
return c!=NO_SUCH_CHANNEL?c:get_parent(type); }
/// Get the position of a channel.
short operator() (EST_ChannelType type) const
{ return get(type); }
/// Does the mapping contain a position for this channel?
bool has_channel(EST_ChannelType type) const
{ return p_map[(int)type] != NO_SUCH_CHANNEL
|| ( p_parent!=0 && p_parent->has_channel(type) ); }
/// Returns the index of the last known channel.
short last_channel(void) const;
/// Returns the type of the channel at the given position.
EST_ChannelType channel_type(unsigned short channel) const;
EST_TrackMap * object_ptr() { return this; }
const EST_TrackMap * object_ptr() const { return this; }
friend class EST_Track;
friend ostream& operator << (ostream &st, const EST_TrackMap &m);
};
/** Channel name maps map textual names for track channels to symbolic
* names, they are just a special case of named enums.
*/
typedef EST_TNamedEnum<EST_ChannelType> EST_ChannelNameMap;
/** Table type used to create EST_ChannelNameMaps.
*/
typedef EST_TValuedEnumDefinition<EST_ChannelType, const char *, NO_INFO>
EST_ChannelNameTable[];
/// Definition of standard names we use for channels.
extern EST_ChannelNameMap EST_default_channel_names;
/// Definition of the names ESPS programs use for channels.
extern EST_ChannelNameMap esps_channel_names;
extern ostream& operator << (ostream &st, const EST_TrackMap &m);
#endif
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