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.
66 lines
2.1 KiB
C++
66 lines
2.1 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 <algorithm>
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#include "helpers/LogHelper.h"
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#include "IFilter.h"
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using namespace std;
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int IFilter::getChannelIndex(std::wstring word, const std::vector<std::wstring>& channelNames, bool allowNew)
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{
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int channelIndex = -1;
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if(iswdigit(word[0]))
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{
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channelIndex = wcstol(word.c_str(), NULL, 10) - 1;
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if(channelIndex < 0 || channelIndex >= (int)channelNames.size())
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{
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LogF(L"Channel number %s out of range (1 - %d)", word.c_str(), channelNames.size());
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channelIndex = -1;
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}
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}
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else
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{
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vector<wstring>::const_iterator pos = find(channelNames.begin(), channelNames.end(), word);
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if(pos == channelNames.end())
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{
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//Special handling to accept "wrong", but unambiguous positions
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if(word == L"SL")
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pos = find(channelNames.begin(), channelNames.end(), L"RL");
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else if(word == L"SR")
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pos = find(channelNames.begin(), channelNames.end(), L"RR");
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else if(word == L"RL")
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pos = find(channelNames.begin(), channelNames.end(), L"SL");
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else if(word == L"RR")
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pos = find(channelNames.begin(), channelNames.end(), L"SR");
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}
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if(pos != channelNames.end())
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channelIndex = (int)(pos - channelNames.begin());
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else if(!allowNew)
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LogF(L"Invalid channel position %s", word.c_str());
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}
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return channelIndex;
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}
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