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.
Classes
struct _tonedef
struct _tonekey
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
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
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
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.
Member Data Documentation
bool ost::TelTone::complete [protected]
unsigned ost::TelTone::count [protected]
tonedef_t* ost::TelTone::def [protected]
timeout_t ost::TelTone::framing [protected]
Level ost::TelTone::level [protected]
unsigned ost::TelTone::remaining [protected]
unsigned ost::TelTone::silent [protected]
tonekey_t* ost::TelTone::tone [protected]
Author
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