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.
75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
/*
|
|
This file is part of EqualizerAPO, a system-wide equalizer.
|
|
Copyright (C) 2014 Jonas Thedering
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along
|
|
with this program; if not, write to the Free Software Foundation, Inc.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "IFilter.h"
|
|
|
|
struct Assignment
|
|
{
|
|
std::wstring targetChannel;
|
|
|
|
struct Summand
|
|
{
|
|
double factor;
|
|
bool isDecibel;
|
|
std::wstring channel;
|
|
};
|
|
|
|
std::vector<Summand> sourceSum;
|
|
};
|
|
|
|
#pragma AVRT_VTABLES_BEGIN
|
|
class CopyFilter : public IFilter
|
|
{
|
|
public:
|
|
CopyFilter(const std::vector<Assignment>& assignments);
|
|
virtual ~CopyFilter();
|
|
virtual bool getAllChannels() {return true;}
|
|
virtual bool getInPlace() {return false;}
|
|
virtual std::vector<std::wstring> initialize(float sampleRate, unsigned maxFrameCount, std::vector<std::wstring> channelNames);
|
|
virtual void process(float** output, float** input, unsigned frameCount);
|
|
|
|
private:
|
|
void cleanup();
|
|
|
|
std::vector<Assignment> assignments;
|
|
|
|
struct InternalAssignment
|
|
{
|
|
int targetChannel;
|
|
|
|
struct InternalSummand
|
|
{
|
|
float factor;
|
|
int channel;
|
|
};
|
|
|
|
InternalSummand* sourceSum;
|
|
unsigned sourceCount;
|
|
};
|
|
|
|
InternalAssignment* internalAssignments;
|
|
unsigned assignmentCount;
|
|
};
|
|
#pragma AVRT_VTABLES_END
|