IMVSCTVAudio

The IMVSCTVAudio interface contains methods and properties to configure the a TV audio device.

Methods:

GetAvailableTVAudioModes The GetAvailableTVAudioModes method retrieves a bitmask of the possible modes.
GetHardwareSupportedTVAudioModes The GetHardwareSupportedTVAudioModes method retrieves a bitmask of the formats available in the hardware.
GetTVAudioMode The GetTVAudioMode method retrieves the current TV audio mode.
IsTVAudioAvailable Check if a TV audio device is available.
SetTVAudioMode The SetTVAudioMode method sets the current TV audio mode.
TVAudioRegisterNotificationCallBack The TVAudioRegisterNotificationCallBack method enables an object that implements the IAMTunerNotification interface to receive event notifications when the tuner changes state. This method is not implemented.
TVAudioUnRegisterNotificationCallBack The TVAudioUnRegisterNotificationCallBack method unregisters an object for event notifications. This method is not implemented.

Typelib: MV SmartControl

TV Audio Modes

Mode Value Description
MV_TVAUDIO_MODE_MONO

1

 Specifies the audio is in mono.
AMTVAUDIO_MODE_STEREO

2

 Specifies the audio is in stereo.
AMTVAUDIO_MODE_LANG_A

16

 Specifies the audio is an additional language. When using bilingual TV Audio in a specific country/region it is defined as main multilingual audio program. 
AMTVAUDIO_MODE_LANG_B

32

 Specifies the audio is an additional language. When using bilingual TV Audio in a specific country/region it is defined as secondary multilingual audio program. 
AMTVAUDIO_MODE_LANG_C

64

 Specifies the audio is an additional language. When using bilingual TV Audio in a specific country/region it is defined as either a third language, or the main multilingual audio program plus the secondary multilingual audio program. For example, use this element to get English from one speaker and Japanese from the other speaker. 

 

Method IMVSCTVAudio::GetAvailableTVAudioModes

Declaration: Function GetAvailableTVAudioModes(SourceFilter As String) As Long

The GetAvailableTVAudioModes method retrieves a bitmask of the possible modes.

Parameter:

SourceFilter Name of the source filter.
C Prototype:

HRESULT GetAvailableTVAudioModes(BSTR SourceFilter, LONG* value);


Method IMVSCTVAudio::GetHardwareSupportedTVAudioModes

Declaration: Function GetHardwareSupportedTVAudioModes(SourceFilter As String) As Long

The GetHardwareSupportedTVAudioModes method retrieves a bitmask of the formats available in the hardware.

Parameter:

SourceFilter Name of the source filter.
C Prototype:

HRESULT GetHardwareSupportedTVAudioModes(BSTR SourceFilter, LONG* value);


Method IMVSCTVAudio::GetTVAudioMode

Declaration: Function GetTVAudioMode(SourceFilter As String) As Long

The GetTVAudioMode method retrieves the current TV audio mode.

Parameter:

SourceFilter Name of the source filter.
C Prototype:

HRESULT GetTVAudioMode(BSTR SourceFilter, LONG* value);


Method IMVSCTVAudio::IsTVAudioAvailable

Declaration: Function IsTVAudioAvailable(SourceFilter As String) As Boolean

Check if a TV audio device is available.

Parameter:

SourceFilter Name of the source filter.
C Prototype:

HRESULT IsTVAudioAvailable(BSTR SourceFilter, VARIANT_BOOL* value);


Method IMVSCTVAudio::SetTVAudioMode

Declaration: Sub SetTVAudioMode(SourceFilter As String, Mode As Long)

The SetTVAudioMode method sets the current TV audio mode.

Parameter:

SourceFilter Name of the source filter.
Mode The new audio mode.
C Prototype:

HRESULT SetTVAudioMode(BSTR SourceFilter, LONG Mode);


Method IMVSCTVAudio::TVAudioRegisterNotificationCallBack

Declaration: Sub TVAudioRegisterNotificationCallBack(SourceFilter As String, UnkNotify As Unknown, Events As Long)

The TVAudioRegisterNotificationCallBack method enables an object that implements the IAMTunerNotification interface to receive event notifications when the tuner changes state. This method is not implemented.

Parameter:

SourceFilter Name of the source filter.
UnkNotify Pointer to the IUnknown pointer of a IAMTunerNotification interface that will receive the event notifications.
Events Flag indicating that an event has occurred.
C Prototype:

HRESULT TVAudioRegisterNotificationCallBack(BSTR SourceFilter, UNKNOWN UnkNotify, LONG Events);


Method IMVSCTVAudio::TVAudioUnRegisterNotificationCallBack

Declaration: Sub TVAudioUnRegisterNotificationCallBack(SourceFilter As String, UnkNotify As Unknown)

The TVAudioUnRegisterNotificationCallBack method unregisters an object for event notifications. This method is not implemented.

Parameter:

SourceFilter Name of the source filter.
UnkNotify Pointer to the IUnknown pointer of a IAMTunerNotification interface that will receive the event notifications.
C Prototype:

HRESULT TVAudioUnRegisterNotificationCallBack(BSTR SourceFilter, UNKNOWN UnkNotify);