VCX Library by Lake of Soft

Components reference

Equalizer

Provides equalization bands with adjustable frequencies. These parametric (variable) bands let you make exact adjustments within a given frequency range.

Frequencies are configured automatically or manually (Get/SetFrequency). Use Get/SetGain to adjust volume of a band.

Implements

IEqualizer	default
IvcproBaseEvents	default	source
IvcproProvider
IvcproConsumer

IEqualizer
Dispatch interface for Equalizer component

Methods
float GetFrequency(long Index)	Returns frequency of a band specified by the Index parameter
float SetFrequency(long Index, float Value)	Assigns frequency to a band specified by the Index parameter
float GetGain(long Index)	Returns volume (dB) of a band
float SetGain(long Index, float Value)	Assigns volume (dB) to a band
void Flush()	Completes processing of the last available data. Recommended to call before component closing
VARIANT GetData()	Reads available data from output stream. Usually used when OnDataAvailable event fires
void SetData(VARIANT* data)	Writes data to input stream
Properties
bool Active	Set to true to activate (open) the component. All other properties should be set to proper values before activation. Set to false to deactivate (close) the component
bool AutoActivate	When true tells the component it must activate consumer (if any) before activating itself. Same applies for deactivation. When false the component does not change the consumer state
long DataSizeIn	Returns data written into but not yet processed by the pipe
long DataSizeOut	Returns data size available to read from the pipe
BSTR DumpInput	File name to dump the component input data to
BSTR DumpOutput	File name to dump the component output data to
unaFreqAssignMode FreqAssignMode	Specifies whether automatical (unafam_powerOf2) or manual (unafam_manual) frequency calculation mode is used
bool IsFormatProvider	When true the component will assign stream format to the consumer (if any). This simplifies the process of distributing stream format among linked components. For example WaveRiff component can assign PCM format to linked WaveOutDevice component, so WAVe file will be played back correctly
long NumBands	Specifies number of frequency bands
long OverNum	Specifies how many chunks of data component can store in input or output buffer, if data cannot be processed immediately. Every chunk holds 1/10 sec. of audio. Set this property to 0 to disable the buffer overflow checking (NOTE: be carefully, since this could lead to uncontrolled memory usage grow)
long PcmBitsPerSample	Specifies number of bits per sample for wave device
long PcmNumChannels	Specifies number of channels per sample for wave device
long PcmSamplesPerSec	Specifies number of samples per second for wave device
bool SyncEvents	Specifies whether events calls synchronized through main thread