AudioScience HPI Version_4.18.
|AES/EBU Digital audio receiver controls|
The AESEBU receiver receives audio from a standard digital audio interface (AESEBU or SPDIF).
|AES/EBU Digital audio transmitter control|
The AESEBU transmitter transmits audio via a standard digital audio interface (AESEBU or SPDIF).
Control synchronous bitstream I/O.
|Channel Mode control|
A Channel Mode allows you to swap the left and right channels, mix the left and right channels into the left or right channel only, or send the left or right channels to both left and right.
A cobranet adapter has one cobranet control for each cobranet interface (usually only one).
|Compressor Expander control|
The compander multiplies its input signal by a factor that is dependent on the amplitude of that signal.
The level control value determines the full scale reference level (also known as trim) of an analog input or output.
The meter control returns information about the level of the audio signal at the position of the control.
A Microphone control of type HPI_CONTROL_MICROPHONE is always located on a source node of type HPI_SOURCE_NODE_MICROPHONE.
This control allows one of many sources to be connected to a destination Typically used on the instream (record) side to select a record input or on the linein to select analog or digital input.
The SampleClock control is used to control the clock source for the adapter.
|Tone Detector control|
The tone detector monitors its inputs for the presence of any of a number of tones.
|Silence Detector Controls|
The silence detector control monitors its input for silence exceeding a set duration.
The tuner control sets the band and frequency of a tuner, and measures the RF level.
The PAD control supports the reading of "Program Associated Data" from a tuner node.
Volume controls are usually situated on a "connection" between a source node and a destination node.
VOX controls are always situated on a destination node of type HPI_DESTNODE_ISTREAM.
A universal control is a control type that supports abstract mechanisms for accessing data, thereby making it capable of representing any controllable parameter.
|RDS analysis functions|
|Parametric Equalizer control|
The parametric equalizer control consists of a series of filters that are applied successively to the signal.
|hpi_err_t||HPI_ControlQuery (const hpi_hsubsys_t *phSubSys, const hpi_handle_t hControl, const uint16_t wAttrib, const uint32_t dwIndex, const uint32_t dwParam, uint32_t *pdwSetting)|
|hpi_err_t HPI_ControlQuery||(||const hpi_hsubsys_t *||phSubSys,|
|phSubSys||Vestigial subsys handle (unused), may be set to NULL|
|hControl||Control to query|
|wAttrib||An attribute of the control|
|dwIndex||Index for possible attribute values|
|pdwSetting||One of N possible settings for the control attribute, specified by dwIndex=0..N-1(and possibly depending on the value of the supplementary parameter)|
Referenced by HPI_AESEBU_Receiver_QueryFormat(), HPI_AESEBU_Transmitter_QueryFormat(), HPI_ChannelMode_QueryMode(), HPI_Meter_QueryChannels(), HPI_SampleClock_QueryLocalRate(), HPI_SampleClock_QuerySource(), HPI_SampleClock_QuerySourceIndex(), HPI_Tuner_QueryBand(), HPI_Tuner_QueryDeemphasis(), HPI_Tuner_QueryFrequency(), HPI_Tuner_QueryGain(), HPI_Tuner_QueryProgram(), HPI_Volume_QueryAutoFadeProfile(), and HPI_Volume_QueryChannels().