Level Control
[Mixer and Controls]

The level control sets the full scale reference level of the line (analog) inputs and outputs The level is in units of 0.01dBu (0dBu = 0.775 VRMS). More...

Functions
HPI_ERR	HPI_LevelQueryRange (HPI_HSUBSYS *phSubSys, HPI_HCONTROL hControl, short *nMinGain_01dB, short *nMaxGain_01dB, short *nStepGain_01dB)
	Query the range of a volume or level control.
HPI_ERR	HPI_LevelSetGain (HPI_HSUBSYS *phSubSys, HPI_HCONTROL hControl, short anGain0_01dB[HPI_MAX_CHANNELS])
	Sets the gain of a level control.
HPI_ERR	HPI_LevelGetGain (HPI_HSUBSYS *phSubSys, HPI_HCONTROL hControl, short anGain0_01dB[HPI_MAX_CHANNELS])
	Gets the gain of a level control.

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Detailed Description

The level control sets the full scale reference level of the line (analog) inputs and outputs The level is in units of 0.01dBu (0dBu = 0.775 VRMS).

Use HPI_LevelQueryRange() to get the range of a level control.

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Function Documentation

HPI_ERR HPI_LevelQueryRange (  HPI_HSUBSYS *  phSubSys, HPI_HCONTROL  hControl, short *  nMinGain_01dB, short *  nMaxGain_01dB, short *  nStepGain_01dB )

Query the range of a volume or level control. Gets the max,min and step of the specified level control. Returns: 0 on success, or one of the HPI Error codes. Parameters: phSubSys  Pointer to HPI subsystem handle. hControl  Handle to level control. nMinGain_01dB  Minimum gain setting in 100ths of a dB. nMaxGain_01dB  Maximum gain setting in 100ths of a dB. nStepGain_01dB  Step size in 100ths of a dB.

HPI_ERR HPI_LevelSetGain (  HPI_HSUBSYS *  phSubSys, HPI_HCONTROL  hControl, short  anGain0_01dB[HPI_MAX_CHANNELS] )

Sets the gain of a level control. The level, or trim as it is sometimes called, sets the level of an analog input or output of a HPI_CONTROL_LEVEL control. The gains will typically range between 0 and +24dBu. Note: The gain is stereo. Returns: 0 on success, or one of the HPI Error codes. Parameters: phSubSys  Pointer to HPI subsystem handle. hControl  Handle to control of type HPI_CONTROL_LEVEL. anGain0_01dB  Array containing the level control gain. The gain is in units of 0.01 dBu, where 0dBu = 0.775VRMS. For example a gain of 1400 is 14dBu. Index 0 is the left channel and index 1 is the right channel.

HPI_ERR HPI_LevelGetGain (  HPI_HSUBSYS *  phSubSys, HPI_HCONTROL  hControl, short  anGain0_01dB[HPI_MAX_CHANNELS] )

Gets the gain of a level control. Gets the level of an analog input or output of a HPI_CONTROL_LEVEL control. The gains will typically range between 0 and +24dBu. Note: The gain is stereo. Returns: 0 on success, or one of the HPI Error codes. Parameters: phSubSys  Pointer to HPI subsystem handle. hControl  Handle to control of type HPI_CONTROL_LEVEL. anGain0_01dB  Array containing the level control gain. The gain is in units of 0.01 dBu, where 0dBu = 0.775VRMS. For example a gain of 1400 is 14dBu. Index 0 is the left channel and index 1 is the right channel.

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