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.
64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
/*
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This file is part of EqualizerAPO, a system-wide equalizer.
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Copyright (C) 2014 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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#include <sstream>
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#include "helpers/MemoryHelper.h"
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#include "helpers/StringHelper.h"
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#include "helpers/LogHelper.h"
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#include "DelayFilter.h"
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#include "DelayFilterFactory.h"
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using namespace std;
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vector<IFilter*> DelayFilterFactory::createFilter(const wstring& configPath, wstring& command, wstring& parameters)
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{
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DelayFilter* filter = NULL;
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if(command == L"Delay")
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{
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//Conversion to period as decimal mark, if needed
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wstring value = StringHelper::replaceCharacters(parameters, L",", L".");
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double delay = 0;
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wstring unit;
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wstringstream stream(value);
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stream >> delay >> unit;
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if(delay > 0)
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{
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if(StringHelper::toLowerCase(unit) == L"ms")
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{
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TraceF(L"Delaying by %g ms", delay);
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void* mem = MemoryHelper::alloc(sizeof(DelayFilter));
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filter = new(mem) DelayFilter(delay, true);
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}
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else if(StringHelper::toLowerCase(unit) == L"samples")
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{
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TraceF(L"Delaying by %g samples", delay);
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void* mem = MemoryHelper::alloc(sizeof(DelayFilter));
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filter = new(mem) DelayFilter(delay, false);
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}
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}
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}
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if(filter == NULL)
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return vector<IFilter*>(0);
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return vector<IFilter*>(1, filter);
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} |