ost::teltone(3)

NAME

ost::TelTone - An object that is used to sequence and extract telephony tones based on a telephony tone descriptor retrieved from the parsed
international telephony tone database.

SYNOPSIS

#include <audio2.h>
Inherits ost::AudioTone.
Public Types
typedef struct ost::TelTone::_tonedef tonedef_t
typedef struct ost::TelTone::_tonekey tonekey_t
Public Member Functions
TelTone (tonekey_t *key, Level level, timeout_t frame=20)
    Create a tone sequencing object for a specific telephony tone key
    id.
~TelTone ()
Linear getFrame (void)
    Generate and retrieve one frame of linear audio data for the
    telephony tone sequence being created.
bool isComplete (void)
    Check if all audio frames for this tone has been created.
Static Public Member Functions
static bool load (const char *pathname, const char *locale=NULL)
    Load a teltones database file into memory.
static tonekey_t * find (const char *tone, const char *locale=NULL)
    find an entry in the teltones database.
Protected Attributes
tonekey_t * tone
tonedef_t * def
unsigned remaining
unsigned silent
unsigned count
timeout_t framing
Level level
bool complete
Classes
struct _tonedef
struct _tonekey

Detailed Description

An object that is used to sequence and extract telephony tones based on a telephony tone descriptor retrieved from the parsed international
telephony tone database.

Author:

David Sugar <dyfet@ostel.com> telephony tone sequencing object.

Member Typedef Documentation

typedef struct ost::TelTone::_tonedef ost::TelTone::tonedef_t typedef struct ost::TelTone::_tonekey ost::TelTone::tonekey_t

Constructor & Destructor Documentation

ost::TelTone::TelTone (tonekey_t * key, Level level, timeout_t frame = 20)

Create a tone sequencing object for a specific telephony tone key id.

Parameters:

key for telephony tone.
level for generated tones.
frame timing to use in processing.

ost::TelTone::~TelTone ()

Member Function Documentation

Linear ost::TelTone::getFrame (void) [virtual]

Generate and retrieve one frame of linear audio data for the telephony tone sequence being created.

Returns:

pointer to samples generated.

Reimplemented from ost::AudioTone.

bool ost::TelTone::isComplete (void) [virtual]

Check if all audio frames for this tone has been created.

Some telephony tones, such as dialtone, may be infinite...

Returns:

true if audio is complete.

Reimplemented from ost::AudioTone.

static bool ost::TelTone::load (const char * pathname, const char * locale

= NULL) [static]
Load a teltones database file into memory.

Returns:

true if successful

Parameters:

pathname of file to load.
locale to optionally load.

static tonekey_t* ost::TelTone::find (const char * tone, const char *

locale = NULL) [static]
find an entry in the teltones database.

Returns:

key of tone list if found, else NULL

Parameters:

tone name
locale to optionally search under

Member Data Documentation

tonekey_t* ost::TelTone::tone [protected] tonedef_t* ost::TelTone::def [protected] unsigned ost::TelTone::remaining [protected] unsigned ost::TelTone::silent [protected] unsigned ost::TelTone::count [protected] timeout_t ost::TelTone::framing [protected] Level ost::TelTone::level [protected] bool ost::TelTone::complete [protected]

Author

Generated automatically by Doxygen for ccAudio from the source code.

ccAudio 5 Sep 2008 ost::TelTone(3)