jthedering
90ee2b0aa9
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.
88 lines
3.2 KiB
C++
88 lines
3.2 KiB
C++
/*
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This file is part of EqualizerAPO, a system-wide equalizer.
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Copyright (C) 2012 Jonas Thedering
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#pragma once
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#include <Unknwn.h>
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#include <audioenginebaseapo.h>
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#include <BaseAudioProcessingObject.h>
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#include "FilterEngine.h"
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class INonDelegatingUnknown
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{
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virtual HRESULT __stdcall NonDelegatingQueryInterface(const IID& iid, void** ppv) = 0;
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virtual ULONG __stdcall NonDelegatingAddRef() = 0;
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virtual ULONG __stdcall NonDelegatingRelease() = 0;
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};
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// {EACD2258-FCAC-4FF4-B36D-419E924A6D79}
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const GUID EQUALIZERAPO_LFX_GUID = { 0xeacd2258, 0xfcac, 0x4ff4, { 0xb3, 0x6d, 0x41, 0x9e, 0x92, 0x4a, 0x6d, 0x79 } };
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// {EC1CC9CE-FAED-4822-828A-82A81A6F018F}
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const GUID EQUALIZERAPO_GFX_GUID = { 0xec1cc9ce, 0xfaed, 0x4822, { 0x82, 0x8a, 0x82, 0xa8, 0x1a, 0x6f, 0x01, 0x8f } };
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class EqualizerAPO
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: public CBaseAudioProcessingObject, public IAudioSystemEffects, public INonDelegatingUnknown
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{
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public:
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EqualizerAPO(IUnknown* pUnkOuter);
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virtual ~EqualizerAPO();
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// IUnknown
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virtual HRESULT __stdcall QueryInterface(const IID& iid, void** ppv);
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virtual ULONG __stdcall AddRef();
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virtual ULONG __stdcall Release();
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// IAudioProcessingObject
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virtual HRESULT __stdcall GetLatency(HNSTIME* pTime);
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virtual HRESULT __stdcall Initialize(UINT32 cbDataSize, BYTE* pbyData);
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virtual HRESULT __stdcall IsInputFormatSupported(IAudioMediaType* pOutputFormat,
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IAudioMediaType* pRequestedInputFormat, IAudioMediaType** ppSupportedInputFormat);
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// IAudioProcessingObjectConfiguration
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virtual HRESULT __stdcall LockForProcess(UINT32 u32NumInputConnections,
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APO_CONNECTION_DESCRIPTOR** ppInputConnections, UINT32 u32NumOutputConnections,
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APO_CONNECTION_DESCRIPTOR** ppOutputConnections);
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virtual HRESULT __stdcall UnlockForProcess(void);
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// IAudioProcessingObjectRT
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virtual void __stdcall APOProcess(UINT32 u32NumInputConnections,
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APO_CONNECTION_PROPERTY** ppInputConnections, UINT32 u32NumOutputConnections,
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APO_CONNECTION_PROPERTY** ppOutputConnections);
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// INonDelegatingUnknown
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virtual HRESULT __stdcall NonDelegatingQueryInterface(const IID& iid, void** ppv);
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virtual ULONG __stdcall NonDelegatingAddRef();
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virtual ULONG __stdcall NonDelegatingRelease();
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static long instCount;
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static const CRegAPOProperties<1> regGfxProperties;
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static const CRegAPOProperties<1> regLfxProperties;
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private:
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long refCount;
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IUnknown* pUnkOuter;
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FilterEngine engine;
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void resetChild();
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IAudioProcessingObject* childAPO;
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IAudioProcessingObjectRT* childRT;
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IAudioProcessingObjectConfiguration* childCfg;
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};
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