mirror of
https://github.com/LMMS/lmms.git
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71ce49d7ba
Follow-Up of 7db3fa94a1 .
This was done by setting `CMAKE_C_INCLUDE_WHAT_YOU_USE` and
`CMAKE_CXX_INCLUDE_WHAT_YOU_USE` to (broken down into multiple lines here,
note, all below `FL/x.h` is not required for C):
```
include-what-you-use;
-Xiwyu;--mapping_file=/usr/share/include-what-you-use/qt5_11.imp;
-Xiwyu;--keep=*/xmmintrin.h;
-Xiwyu;--keep=*/lmmsconfig.h;
-Xiwyu;--keep=*/weak_libjack.h;
-Xiwyu;--keep=*/sys/*;
-Xiwyu;--keep=*/debug.h;
-Xiwyu;--keep=*/SDL/*;
-Xiwyu;--keep=*/alsa/*;
-Xiwyu;--keep=*/FL/x.h;
-Xiwyu;--keep=*/MidiApple.h;
-Xiwyu;--keep=*/MidiWinMM.h;
-Xiwyu;--keep=*/AudioSoundIo.h;
-Xiwyu;--keep=*/OpulenZ/adplug/*;
-Xiwyu;--keep=QPainterPath;
-Xiwyu;--keep=QtTest
```
FAQ:
* Q: Does this speed-up a completely fresh compile?
* A: No, I measured it.
* Q: Does it speed up anything else?
* A: Yes. If you change one header, it can reduce the number of CPP files
that your compiler needs to recompile, or your IDE has to re-scan.
* Q: What other reasons are for this PR?
* A: It's idiomatic to only include headers if you need them. Also, it will
reduce output for those who want to use IWYU for new PRs.
Background:
This is just a remainder PR of what I planned. My original idea was to setup
a CI which warns you of useless includes (but not of all issues that IWYU
complains about). However, I could not see that this was favored on Discord.
A full IWYU CI also has the problem that it (possibly??) needs to compile
with `make -j 1`, which would make CI really slow.
However, for that plan, I had to fix the whole code base to be IWYU
compliant - which it now is.
95 lines
2.1 KiB
C++
95 lines
2.1 KiB
C++
/*
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* stereodelay.cpp - defination of StereoDelay class.
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*
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* Copyright (c) 2014 David French <dave/dot/french3/at/googlemail/dot/com>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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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 GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#include "StereoDelay.h"
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#include "SampleFrame.h"
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namespace lmms
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{
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StereoDelay::StereoDelay( int maxTime, int sampleRate )
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{
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m_buffer = 0;
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m_maxTime = static_cast<float>(maxTime);
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m_maxLength = maxTime * sampleRate;
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m_length = static_cast<float>(m_maxLength);
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m_writeIndex = 0;
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m_feedback = 0.0f;
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setSampleRate( sampleRate );
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}
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StereoDelay::~StereoDelay()
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{
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if( m_buffer )
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{
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delete[] m_buffer;
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}
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}
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void StereoDelay::tick( SampleFrame& frame )
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{
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m_writeIndex = ( m_writeIndex + 1 ) % ( int )m_maxLength;
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int readIndex = m_writeIndex - static_cast<int>(m_length);
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if (readIndex < 0 ) { readIndex += m_maxLength; }
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float lOut = m_buffer[ readIndex ][ 0 ];
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float rOut = m_buffer[ readIndex ] [1 ];
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m_buffer[ m_writeIndex ][ 0 ] = frame[ 0 ] + ( lOut * m_feedback );
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m_buffer[ m_writeIndex ][ 1 ] = frame[ 1 ] + ( rOut * m_feedback );
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frame[ 0 ] = lOut;
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frame[ 1 ] = rOut;
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}
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void StereoDelay::setSampleRate( int sampleRate )
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{
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if( m_buffer )
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{
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delete[] m_buffer;
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}
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int bufferSize = ( int )( sampleRate * m_maxTime );
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m_buffer = new SampleFrame[bufferSize];
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for( int i = 0 ; i < bufferSize ; i++)
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{
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m_buffer[i][0] = 0.0;
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m_buffer[i][1] = 0.0;
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}
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}
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} // namespace lmms
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