sydney/EqualizerAPO
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Version 0.9

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Added: Filter type "IIR", which allows to specify a user-defined IIR filter of arbitrary order with custom coefficients.
Improved: For playback devices, the APO is now installed both as GFX (post-mix) and LFX (pre-mix) APO. Normally the filtering happens in GFX, but the command "Stage" allows to select LFX to apply effects based on the number of input channels.
Added: Expression language. The commands "If", "ElseIf", "Else", "EndIf", "Eval" and inline expressions allow to change the filter behaviour based on runtime conditions.
Added: Command "Copy", which copies audio data between channels.
Added: Command "Delay", which delays the audio on the currently selected channels.
Improved: Configuration files are now locked exclusively for writing while reading them.
Improved: There is now a transition (10 ms) from old to new configuration after loading.
Improved: Substantial internal restructuring to improve extensibility and maintainability. Filtering commands now work exactly in the order they were specified.
Fixed: When the microphone input was in stereo but the application requested a mono stream, the audio was heavily distorted.
Fixed: The sine sweep generated by the Benchmark application had floating-point precision issues leading to severe artifacts when certain filters were applied.
This commit is contained in:
jthedering committed 2014-08-10 18:35:59 +00:00
1 parent 11e52f6210
commit 90ee2b0aa9
89 files changed
+6396 -1375
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EqualizerAPO.h
+15 -9
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@@ -22,7 +22,7 @@
#include <Unknwn.h>
#include <audioenginebaseapo.h>
#include <BaseAudioProcessingObject.h>
#include "ParametricEQ.h"
#include "FilterEngine.h"
class INonDelegatingUnknown
{
@@ -31,7 +31,12 @@ class INonDelegatingUnknown
virtual ULONG __stdcall NonDelegatingRelease() = 0;
};
class __declspec(uuid("{EC1CC9CE-FAED-4822-828A-82A81A6F018F}")) EqualizerAPO
// {EACD2258-FCAC-4FF4-B36D-419E924A6D79}
const GUID EQUALIZERAPO_LFX_GUID = { 0xeacd2258, 0xfcac, 0x4ff4, { 0xb3, 0x6d, 0x41, 0x9e, 0x92, 0x4a, 0x6d, 0x79 } };
// {EC1CC9CE-FAED-4822-828A-82A81A6F018F}
const GUID EQUALIZERAPO_GFX_GUID = { 0xec1cc9ce, 0xfaed, 0x4822, { 0x82, 0x8a, 0x82, 0xa8, 0x1a, 0x6f, 0x01, 0x8f } };
class EqualizerAPO
: public CBaseAudioProcessingObject, public IAudioSystemEffects, public INonDelegatingUnknown
{
public:
@@ -49,29 +54,30 @@ public:
virtual HRESULT __stdcall IsInputFormatSupported(IAudioMediaType* pOutputFormat,
IAudioMediaType* pRequestedInputFormat, IAudioMediaType** ppSupportedInputFormat);
// IAudioProcessingObjectRT
virtual void __stdcall APOProcess(UINT32 u32NumInputConnections,
APO_CONNECTION_PROPERTY** ppInputConnections, UINT32 u32NumOutputConnections,
APO_CONNECTION_PROPERTY** ppOutputConnections);
// IAudioProcessingObjectConfiguration
virtual HRESULT __stdcall LockForProcess(UINT32 u32NumInputConnections,
APO_CONNECTION_DESCRIPTOR** ppInputConnections, UINT32 u32NumOutputConnections,
APO_CONNECTION_DESCRIPTOR** ppOutputConnections);
virtual HRESULT __stdcall UnlockForProcess(void);
// IAudioProcessingObjectRT
virtual void __stdcall APOProcess(UINT32 u32NumInputConnections,
APO_CONNECTION_PROPERTY** ppInputConnections, UINT32 u32NumOutputConnections,
APO_CONNECTION_PROPERTY** ppOutputConnections);
// INonDelegatingUnknown
virtual HRESULT __stdcall NonDelegatingQueryInterface(const IID& iid, void** ppv);
virtual ULONG __stdcall NonDelegatingAddRef();
virtual ULONG __stdcall NonDelegatingRelease();
static long instCount;
static const CRegAPOProperties<1> regProperties;
static const CRegAPOProperties<1> regGfxProperties;
static const CRegAPOProperties<1> regLfxProperties;
private:
long refCount;
IUnknown* pUnkOuter;
ParametricEQ peq;
FilterEngine engine;
void resetChild();