#include <lid.h>
Data Structures | |
| struct | DialParams |
| struct | T35CountryInfo |
Public Member Functions | |
| OpalLineInterfaceDevice () | |
| virtual PBoolean | Open (const PString &device)=0 |
| virtual PBoolean | IsOpen () const |
| virtual PBoolean | Close () |
| virtual PString | GetDeviceType () const =0 |
| virtual PString | GetDeviceName () const =0 |
| virtual PStringArray | GetAllNames () const =0 |
| virtual PString | GetDescription () const =0 |
| virtual unsigned | GetLineCount () const =0 |
| virtual PBoolean | IsLineTerminal (unsigned line)=0 |
| virtual PBoolean | IsLinePresent (unsigned line, PBoolean force=false) |
| virtual PBoolean | IsLineOffHook (unsigned line)=0 |
| virtual PBoolean | SetLineOffHook (unsigned line, PBoolean newState=true)=0 |
| virtual PBoolean | SetLineOnHook (unsigned line) |
| virtual PBoolean | HookFlash (unsigned line, unsigned flashTime=200) |
| virtual PBoolean | HasHookFlash (unsigned line) |
| virtual PBoolean | IsLineRinging (unsigned line, DWORD *cadence=NULL) |
| virtual PBoolean | RingLine (unsigned line, PINDEX nCadence, const unsigned *pattern=NULL, unsigned frequency=400) |
| virtual PBoolean | SetLineConnected (unsigned line) |
| virtual PBoolean | IsLineConnected (unsigned line) |
| virtual PBoolean | IsLineDisconnected (unsigned line, PBoolean checkForWink=true) |
| virtual PBoolean | SetLineToLineDirect (unsigned line1, unsigned line2, PBoolean connect) |
| virtual PBoolean | IsLineToLineDirect (unsigned line1, unsigned line2) |
| virtual OpalMediaFormatList | GetMediaFormats () const =0 |
| virtual PBoolean | SetReadFormat (unsigned line, const OpalMediaFormat &mediaFormat)=0 |
| virtual PBoolean | SetWriteFormat (unsigned line, const OpalMediaFormat &mediaFormat)=0 |
| virtual OpalMediaFormat | GetReadFormat (unsigned line)=0 |
| virtual OpalMediaFormat | GetWriteFormat (unsigned line)=0 |
| virtual PBoolean | StopReading (unsigned line) |
| virtual PBoolean | StopWriting (unsigned line) |
| virtual bool | UsesRTP () const |
| virtual PBoolean | SetReadFrameSize (unsigned line, PINDEX frameSize) |
| virtual PBoolean | SetWriteFrameSize (unsigned line, PINDEX frameSize) |
| virtual PINDEX | GetReadFrameSize (unsigned line) |
| virtual PINDEX | GetWriteFrameSize (unsigned line) |
| virtual PBoolean | ReadFrame (unsigned line, void *buf, PINDEX &count)=0 |
| virtual PBoolean | WriteFrame (unsigned line, const void *buf, PINDEX count, PINDEX &written)=0 |
| virtual PBoolean | ReadBlock (unsigned line, void *buf, PINDEX count) |
| virtual PBoolean | WriteBlock (unsigned line, const void *buf, PINDEX count) |
| virtual unsigned | GetAverageSignalLevel (unsigned line, PBoolean playback) |
| virtual PBoolean | EnableAudio (unsigned line, PBoolean enable=true) |
| PBoolean | DisableAudio (unsigned line) |
| virtual PBoolean | IsAudioEnabled (unsigned line) const |
| virtual PBoolean | SetRecordVolume (unsigned line, unsigned volume) |
| virtual PBoolean | SetPlayVolume (unsigned line, unsigned volume) |
| virtual PBoolean | GetRecordVolume (unsigned line, unsigned &volume) |
| virtual PBoolean | GetPlayVolume (unsigned line, unsigned &volume) |
| virtual AECLevels | GetAEC (unsigned line) const |
| virtual PBoolean | SetAEC (unsigned line, AECLevels level) |
| virtual PBoolean | GetVAD (unsigned line) const |
| virtual PBoolean | SetVAD (unsigned line, PBoolean enable) |
| virtual PBoolean | GetCallerID (unsigned line, PString &idString, PBoolean full=false) |
| virtual PBoolean | SetCallerID (unsigned line, const PString &idString) |
| virtual PBoolean | SendVisualMessageWaitingIndicator (unsigned line, PBoolean on) |
| virtual PBoolean | PlayDTMF (unsigned line, const char *digits, DWORD onTime=DefaultDTMFOnTime, DWORD offTime=DefaultDTMFOffTime) |
| virtual char | ReadDTMF (unsigned line) |
| virtual PBoolean | GetRemoveDTMF (unsigned line) |
| virtual PBoolean | SetRemoveDTMF (unsigned line, PBoolean removeTones) |
| virtual CallProgressTones | IsToneDetected (unsigned line) |
| virtual CallProgressTones | WaitForToneDetect (unsigned line, unsigned timeout=3000) |
| virtual PBoolean | WaitForTone (unsigned line, CallProgressTones tone, unsigned timeout=3000) |
| virtual bool | SetToneDescription (unsigned line, CallProgressTones tone, const PString &description) |
| virtual bool | SetToneParameters (unsigned line, CallProgressTones tone, unsigned frequency1, unsigned frequency2, ToneMixingModes mode, PINDEX numCadences, const unsigned *onTimes, const unsigned *offTimes) |
| virtual PBoolean | PlayTone (unsigned line, CallProgressTones tone) |
| virtual PBoolean | IsTonePlaying (unsigned line) |
| virtual PBoolean | StopTone (unsigned line) |
| virtual CallProgressTones | DialOut (unsigned line, const PString &number, const DialParams ¶ms=DialParams()) |
| virtual unsigned | GetWinkDuration (unsigned line) |
| virtual PBoolean | SetWinkDuration (unsigned line, unsigned winkDuration) |
| T35CountryCodes | GetCountryCode () const |
| PString | GetCountryCodeName () const |
| virtual PBoolean | SetCountryCode (T35CountryCodes country) |
| virtual PBoolean | SetCountryCodeName (const PString &countryName) |
| virtual PStringList | GetCountryCodeNameList () const |
| virtual PBoolean | PlayAudio (unsigned line, const PString &filename) |
| virtual PBoolean | StopAudio (unsigned line) |
| virtual PBoolean | RecordAudioStart (unsigned line, const PString &filename) |
| virtual PBoolean | RecordAudioStop (unsigned line) |
| int | GetErrorNumber () const |
| PString | GetErrorText () const |
| virtual void | PrintOn (ostream &strm) const |
Static Public Member Functions | |
| static PString | GetCountryCodeName (T35CountryCodes code) |
| static T35CountryCodes | GetCountryCode (const PString &name) |
| static const T35CountryInfo & | GetCountryInfo (T35CountryCodes code) |
| static OpalLineInterfaceDevice * | Create (const PString &type, void *parameters=NULL) |
| static OpalLineInterfaceDevice * | CreateAndOpen (const PString &descriptor, void *parameters=NULL) |
| static PStringList | GetAllTypes () |
| static PStringList | GetAllDevices () |
Protected Attributes | |
| int | os_handle |
| int | osError |
| T35CountryCodes | countryCode |
| PBYTEArray | m_readDeblockingBuffer |
| PBYTEArray | m_writeDeblockingBuffer |
| PINDEX | m_readDeblockingOffset |
| PINDEX | m_writeDeblockingOffset |
| std::vector< bool > | m_LineAudioEnabled |
| PString | m_callProgressTones [NumTones] |
Detailed Description
Line Interface Device abstraction. Note all functions in this device abstraction are assumed to be thread atomic.
Member Enumeration Documentation
Constructor & Destructor Documentation
| OpalLineInterfaceDevice::OpalLineInterfaceDevice | ( | ) |
Construct a new line interface device.
Member Function Documentation
|
virtual |
Close the line interface device.
Reimplemented in DahdiLineInterfaceDevice, and OpalPluginLID.
|
static |
Create a new device from the registration string
- Parameters
-
type Type of device to create parameters Arbitrary parameters for the LID
|
static |
Create a new device and open it given the descriptor string. The descriptor consists of the device type, a ':' character and then the specific device name.
- Parameters
-
descriptor Type of device to create parameters Arbitrary parameters for the LID
|
virtual |
Dial a number on network line. The takes the line off hook, waits for dial tone, and transmits the specified number as DTMF tones.
If the requireTones flag is true the call is aborted of the call progress tones are not detected. Otherwise the call proceeds with short delays while it tries to detect the call progress tones.
The return code indicates the following: DialTone No dial tone detected RingTone Dial was successful BusyTone The remote phone was busy ClearTone Dial failed (usually means rang out) NoTone There was an internal error making the call
- Parameters
-
line Number of line number Number to dial params Optional parameters for dial out.
Reimplemented in OpalPluginLID.
Referenced by OpalLine::DialOut().
|
inline |
|
virtual |
Enable audio for the line.
- Parameters
-
line Number of line enable Enable/disable audio
Reimplemented in OpalPluginLID.
Referenced by DisableAudio(), and OpalLine::EnableAudio().
|
virtual |
Get acoustic echo cancellation. Note, not all devices may support this function.
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID.
Referenced by OpalLine::GetAEC().
|
static |
Return an array of all the LID types registered and all of the possible devices each one can open. Each string will be of the form "type: name" eg "Quicknet: 3211FFFF"
|
pure virtual |
Get all the possible devices that can be opened.
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
|
static |
Return an array of all the LID types registered.
|
virtual |
Get average signal level in last frame.
- Parameters
-
line Number of line playback Get average playback or record level.
Reimplemented in OpalPluginLID.
Referenced by OpalLine::GetAverageSignalLevel().
|
virtual |
Get Caller ID from the last incoming ring. The idString parameter is either simply the "number" field of the caller ID data, or if full is true, all of the fields in the caller ID data.
The full data of the caller ID string consists fields separated by tab characters ('\t'), the first three are always the Calling Line Identity (CLI or calling number), the date and the Calling Line Name field. Other fields may follow and are the of the form name=value. The values are LID dependent.
A false is returned if there is no Caller ID information available, e.g. if no ring has occurred.
- Parameters
-
line Number of line idString ID string returned full Get full information in idString
Reimplemented in OpalPluginLID.
Referenced by OpalLine::GetCallerID().
|
inline |
Get the country code set for the device.
References countryCode.
|
static |
Get the country code from a string.
| PString OpalLineInterfaceDevice::GetCountryCodeName | ( | ) | const |
Get the country code set for the device as a string.
|
static |
Get the country code as a string.
|
virtual |
Get the list of countries actually supported by the device
Reimplemented in OpalPluginLID.
|
static |
Get the T.35 country information.
|
pure virtual |
Get the description of the line interface device. This is a string indication of the card type for user interface display purposes or device specific control. The device should be as detailed as possible eg "Quicknet LineJACK".
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
|
pure virtual |
Get the device name, as used to open the device. Note the format of this name should be as is returned from GetAllName() and must be able to be used in a subsequent Open() call.
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
|
pure virtual |
Get the device type identifier. This is as is used in the factory registration.
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
|
inline |
Return number for last error.
References osError.
| PString OpalLineInterfaceDevice::GetErrorText | ( | ) | const |
Return text for last error.
|
pure virtual |
Get the total number of lines supported by this device.
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
|
pure virtual |
Get the media formats this device is capable of using.
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
|
virtual |
Set volume level for playing. A value of 100 is the maximum volume possible for the hardware. A value of 0 is the minimum volume possible for the hardware.
- Parameters
-
line Number of line volume Volume level from 0 to 100%
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::GetPlayVolume().
|
pure virtual |
Get the media format (codec) for reading on the specified line.
- Parameters
-
line Number of line
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::GetReadFormat().
|
virtual |
Get the read frame size in bytes. All calls to ReadFrame() will return this number of bytes.
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::GetReadFrameSize().
|
virtual |
Get volume level for recording. A value of 100 is the maximum volume possible for the hardware. A value of 0 is the minimum volume possible for the hardware.
- Parameters
-
line Number of line volume Volume level from 0 to 100%
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::GetRecordVolume().
|
virtual |
Get DTMF removal mode. When set in this mode the DTMF tones detected are removed from the encoded data stream as returned by ReadFrame().
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID.
Referenced by OpalLine::GetRemoveDTMF().
|
virtual |
Get voice activity detection. Note, not all devices, or selected codecs, may support this function.
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID.
Referenced by OpalLine::GetVAD().
|
virtual |
Get wink detect minimum duration. This is the signal used by telcos to end PSTN call.
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID.
|
pure virtual |
Get the media format (codec) for writing on the specified line.
- Parameters
-
line Number of line
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::GetWriteFormat().
|
virtual |
Get the write frame size in bytes. All calls to WriteFrame() must be this number of bytes.
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::GetWriteFrameSize().
|
virtual |
Return true if a hook flash has been detected
Reimplemented in OpalPluginLID.
Referenced by OpalLine::HasHookFlash().
|
virtual |
Set the hook state off then straight back on again. This will only operate if the line is currently off hook.
- Parameters
-
line Number of line flashTime Time for hook flash in milliseconds
Reimplemented in OpalPluginLID.
Referenced by OpalLine::HookFlash().
|
virtual |
Determine if audio for the line is enabled.
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::IsAudioEnabled().
|
virtual |
Determine if remote has answered call on line. This uses the hardware (and country) dependent means for determining if the remote end of a PSTN connection has answered. Typically this is a "polarity reversal" but other techniques may be used.
It should be noted that IsLineConnected() is not exactly the same thing as !IsLineDisconnected().
For a POTS port this is equivalent to IsLineOffHook().
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID.
Referenced by OpalLine::IsConnected().
|
virtual |
Determine if line has been disconnected from a call. This uses the hardware (and country) dependent means for determining if the remote end of a PSTN connection has hung up. For example a "wink" or "K break" which is a short drop in line voltage similar to (though opposite in sense) toa hook flash.
It should be noted that IsLineDisconnected() is not exactly the same thing as !IsLineConnected().
For a POTS port this is equivalent to !IsLineOffHook().
- Parameters
-
line Number of line checkForWink Flag to check for remote hang up
Reimplemented in OpalPluginLID.
Referenced by OpalLine::IsDisconnected().
|
pure virtual |
Determine if line is currently off hook. This function implies that the state is debounced and that a return value of true indicates that the phone is really off hook. That is hook flashes and winks are masked out.
- Parameters
-
line Number of line
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::IsOffHook().
|
virtual |
Determine if a physical line is present on the logical line.
- Parameters
-
line Number of line force Force test, do not optimise
Reimplemented in OpalPluginLID.
Referenced by OpalLine::IsPresent().
|
virtual |
Determine if line is ringing. This function implies that the state is "debounced" and that a return value of true indicates that the phone is still ringing and it is not simply a pause in the ring cadence.
If cadence is not NULL then it is set with the bit pattern for the incoming ringing. Note that in this case the funtion may take a full sequence to return. If it is NULL it can be assumed that the function will return quickly.
- Parameters
-
line Number of line cadence Cadence of incoming ring
Reimplemented in OpalPluginLID.
|
pure virtual |
Get the type of the line. A "terminal" line is one where a call may terminate. For example a POTS line with a standard telephone handset on it would be a terminal line. The alternative is a "network" line, that is one connected to switched network eg the standard PSTN.
- Parameters
-
line Number of line
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::IsTerminal().
|
virtual |
Determine if the two lines are directly connected.
- Parameters
-
line1 Number of first line line2 Number of second line
Reimplemented in OpalPluginLID.
|
virtual |
Determine if the line interface device is open.
|
virtual |
See if any tone is detected.
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID.
Referenced by OpalLine::IsToneDetected().
|
virtual |
Determine if a tone is still playing
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::IsTonePlaying().
|
pure virtual |
Open the line interface device.
- Parameters
-
device Device identifier name.
Implemented in DahdiLineInterfaceDevice, and OpalPluginLID.
|
virtual |
Play a wav file
- Parameters
-
line Number of line filename File Name
|
virtual |
Play a DTMF digit. Any characters that are not in the set 0-9, A-D, * or # will be ignored.
- Parameters
-
line Number of line digits DTMF digits to be played onTime Number of milliseconds to play each DTMF digit offTime Number of milliseconds between digits
Reimplemented in OpalPluginLID.
Referenced by OpalLine::PlayDTMF().
|
virtual |
Play a tone.
- Parameters
-
line Number of line tone Tone to be played
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::PlayTone().
|
virtual |
|
virtual |
High level read of audio data from the device. This version will allow non-integral number of frames to be read.
- Parameters
-
line Number of line buf Pointer to a block of memory to receive the read bytes. count Count of bytes to read.
Referenced by OpalLine::ReadBlock().
|
virtual |
Read a DTMF digit detected. This may be characters from the set 0-9, A-D, * or #. A null ('\0') character indicates that there are no tones in the queue. Characters E through P indicate the following tones:
E = 800 F = 1000 G = 1250 H = 950 I = 1100 J = 1400 K = 1500 L = 1600 M = 1800 N = 2100 O = 1300 P = 2450
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::ReadDTMF().
|
pure virtual |
Low level read of a frame from the device.
- Parameters
-
line Number of line buf Pointer to a block of memory to receive data. count Number of bytes read, <= GetReadFrameSize()
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::ReadFrame().
|
virtual |
start recording audio
- Parameters
-
line line filename File Name
|
virtual |
stop recording audio
- Parameters
-
line line
|
virtual |
Begin ringing local phone set with specified cadence. If nCadence is zero then stops ringing.
Note that this may not be possible on a given line, for example on a PSTN line the ring state is determined by external hardware and cannot be changed by the software.
Also note that the cadence may be ignored by particular hardware driver so that only the zero or non-zero values are significant.
The ring pattern is an array of millisecond times for on and off parts of the cadence. Thus the Australian ring cadence would be represented by the array unsigned AusRing[] = { 400, 200, 400, 2000 }
If the nCadence in non-zero and the pattern parameter is NULL, then the standard ring pattern for the selected country is used.
- Parameters
-
line Number of line nCadence Number of entries in cadence array pattern Ring pattern times frequency Frequency of ring (if relevant)
Reimplemented in OpalPluginLID.
Referenced by OpalLine::Ring().
|
virtual |
Send a Visual Message Waiting Indicator
- Parameters
-
line Number of line on Flag for VMWI on/off
Reimplemented in OpalPluginLID.
Referenced by OpalLine::SendVisualMessageWaitingIndicator().
|
virtual |
Set acoustic echo cancellation. Note, not all devices may support this function.
- Parameters
-
line Number of line level AEC level
Reimplemented in OpalPluginLID.
Referenced by OpalLine::SetAEC().
|
virtual |
Set Caller ID information. The idString must be as a minimum a number fields for the Calling Line Identity.
The full data of the caller ID string consists fields separated by tab characters ('\t'), the first three are always the Calling Line Identity (CLI or calling number), the date and the Calling Line Name field. Other fields may follow and are the of the form name=value. The values are LID dependent.
If the date field is missing (e.g. two consecutive tabs) then the current time and date is used. Using an empty string will clear the caller ID so that no caller ID is sent on the next RingLine() call.
if the line is on hook then this information is sent when the next RingLine() function is called to start a ring cycle. Note that if the Ring cycle had already been started then this function may return false.
If the line is off hook, then a Caller ID on Message Waiting is sent, if supported by the LID, otherwise false is returned.
- Parameters
-
line Number of line idString ID string to use
Reimplemented in OpalPluginLID.
Referenced by OpalLine::SetCallerID().
|
virtual |
Set the country code set for the device. This may change the line analogue coefficients, ring detect, call disconnect detect and call progress tones to fit the countries telephone network.
- Parameters
-
country COuntry code for device
Reimplemented in OpalPluginLID.
|
virtual |
Set the country code set for the device.
- Parameters
-
countryName COuntry code for device
|
virtual |
Indicate to the POTS handset that the call is connected. This uses the hardware (and country) dependent means to indicate to the remote end of a POTS connection that we have answerd. Typically this is a "polarity reversal" but other techniques may be used.
The "connected" state remains in force till the remote disconnects the call, though hanging up.
Returns true if successful, always returns false for PSTN lines.
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID.
Referenced by OpalLine::SetConnected().
|
pure virtual |
Set the hook state of the line. Note that not be possible on a given line, for example a POTS line with a standard telephone handset. The hook state is determined by external hardware and cannot be changed by the software.
- Parameters
-
line Number of line newState New state to set
Implemented in OpalPluginLID.
Referenced by SetLineOnHook(), OpalLine::SetOffHook(), and OpalLine::SetOnHook().
|
inlinevirtual |
Set the hook state of the line. This is the complement of SetLineOffHook().
- Parameters
-
line Number of line
References SetLineOffHook().
|
virtual |
Directly connect the two lines.
- Parameters
-
line1 Number of first line line2 Number of second line connect Flag for connect/disconnect
Reimplemented in OpalPluginLID.
|
virtual |
Set volume level for playing. A value of 100 is the maximum volume possible for the hardware. A value of 0 is the minimum volume possible for the hardware.
- Parameters
-
line Number of line volume Volume level from 0 to 100%
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::SetPlayVolume().
|
pure virtual |
Set the media format (codec) for reading on the specified line.
- Parameters
-
line Number of line mediaFormat Codec type
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::SetReadFormat().
|
virtual |
Set the read frame size in bytes. Note that a LID may ignore this value so always use GetReadFrameSize() for I/O.
- Parameters
-
line Number of line frameSize New frame size
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::SetReadFrameSize().
|
virtual |
Set volume level for recording. A value of 100 is the maximum volume possible for the hardware. A value of 0 is the minimum volume possible for the hardware.
- Parameters
-
line Number of line volume Volume level from 0 to 100%
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::SetRecordVolume().
|
virtual |
Set DTMF removal mode. When set in this mode the DTMF tones detected are removed from the encoded data stream as returned by ReadFrame().
- Parameters
-
line Number of line removeTones Flag for removing DTMF tones.
Reimplemented in OpalPluginLID.
Referenced by OpalLine::SetRemoveDTMF().
|
virtual |
Set a calling tones description. This sets the calling tone infromation for both wtah is emitted by PlayTone and what is detected by IsToneDetected().
The description string is of the form frequency ':' cadence where frequency is either frequency play tone, detect +/- 5% low '-' high play tone halfway, but detect anything in range low '+' high play both tones, detect anything in range low 'x' high play tone1 modulated by tone2, detect twice modulation range and cadence is mintime ontime '-' offtime ontime '-' offtime '-' ontime '-' offtime examples: 300:0.25 300Hz for minimum 250ms 1100:0.4-0.4 1100Hz with cadence 400ms on, 400ms off 900-1300:1.5 900Hz to 1300Hz for minimum of 1.5 seconds 425:0.4-0.2-0.4-2 425Hz with cadence 400ms on, 200ms off, 400ms on, 2 seconds off
- Parameters
-
line Number of line tone Tone filter to change description Description of filter parameters
|
virtual |
Set calling tones filter parameters. Note this function is misnamed as it can also set the calling tone to be output by PlayTone().
- Parameters
-
line Number of line tone Tone filter to change frequency1 Usually low frequency frequency2 Usually high frequency mode Mode for how freqencies are mixed, -1 is numCadences Number of cadence times onTimes Cadence ON times offTimes Cadence OFF times
Reimplemented in OpalPluginLID.
|
virtual |
Set voice activity detection. Note, not all devices, or selected codecs, may support this function.
- Parameters
-
line Number of line enable Flag for enabling VAD
Reimplemented in OpalPluginLID.
Referenced by OpalLine::SetVAD().
|
virtual |
Set wink detect minimum duration. This is the signal used by telcos to end PSTN call.
- Parameters
-
line Number of line winkDuration New minimum duration
Reimplemented in OpalPluginLID.
|
pure virtual |
Set the media format (codec) for writing on the specified line.
- Parameters
-
line Number of line mediaFormat Codec type
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::SetWriteFormat().
|
virtual |
Set the write frame size in bytes. Note that a LID may ignore this value so always use GetReadFrameSize() for I/O.
- Parameters
-
line Number of line frameSize New frame size
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::SetWriteFrameSize().
|
virtual |
Stop playing the Wave File
- Parameters
-
line Number of line
|
virtual |
Stop the read codec.
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::StopReading().
|
virtual |
Stop playing a tone.
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::StopTone().
|
virtual |
Stop the write codec.
- Parameters
-
line Number of line
Reimplemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::StopWriting().
|
virtual |
Indicate that ReadFrame() & WriteFrame() take whole RTP packets. Note that if this returns true, SetReadFrameSize(), SetWriteFrameSize(), GetReadFrameSize() and GetWriteFrameSize() are no longer relevant.
|
virtual |
See if a specific tone is detected.
- Parameters
-
line Number of line tone Tone to wait for timeout Milliseconds to wait for
Reimplemented in OpalPluginLID.
Referenced by OpalLine::WaitForTone().
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virtual |
See if any tone is detected.
- Parameters
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line Number of line timeout Milliseconds to wait for
Reimplemented in OpalPluginLID.
Referenced by OpalLine::WaitForToneDetect().
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virtual |
High level write audio data to the device.
- Parameters
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line Number of line buf Pointer to a block of memory to write. count Count of bytes to write.
Referenced by OpalLine::WriteBlock().
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pure virtual |
Low level write frame to the device.
- Parameters
-
line Number of line buf Pointer to a block of memory to write. count Number of bytes to write, <= GetWriteFrameSize() written Number of bytes written, <= GetWriteFrameSize()
Implemented in OpalPluginLID, and DahdiLineInterfaceDevice.
Referenced by OpalLine::WriteFrame().
Field Documentation
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protected |
Referenced by GetCountryCode().
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protected |
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protected |
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protected |
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protected |
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protected |
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protected |
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protected |
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mutableprotected |
Referenced by GetErrorNumber().
The documentation for this class was generated from the following file:
