small fix for initialization of host address in case not actual address could be obtained
This commit is contained in:
Volker Fischer
parent
d0b017df54
commit
b625a77521
1 changed files with 494 additions and 491 deletions
985
src/util.cpp
985
src/util.cpp
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@ -1,491 +1,494 @@
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/******************************************************************************\
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* Copyright (c) 2004-2011
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*
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* Author(s):
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* Volker Fischer
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*
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******************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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\******************************************************************************/
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#include "util.h"
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/* Implementation *************************************************************/
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// Input level meter implementation --------------------------------------------
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void CStereoSignalLevelMeter::Update ( CVector<short>& vecsAudio )
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{
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// get the stereo vector size
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const int iStereoVecSize = vecsAudio.Size();
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// Get maximum of current block
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//
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// Speed optimization:
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// - we only make use of the positive values and ignore the negative ones
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// -> we do not need to call the fabs() function
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// - we only evaluate every third sample
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//
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// With these speed optimizations we might loose some information in
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// special cases but for the average music signals the following code
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// should give good results.
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//
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short sMaxL = 0;
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short sMaxR = 0;
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for ( int i = 0; i < iStereoVecSize; i += 6 ) // 2 * 3 = 6 -> stereo
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{
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// left channel
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if ( sMaxL < vecsAudio[i] )
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{
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sMaxL = vecsAudio[i];
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}
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// right channel
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if ( sMaxR < vecsAudio[i + 1] )
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{
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sMaxR = vecsAudio[i + 1];
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}
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}
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dCurLevelL = UpdateCurLevel ( dCurLevelL, sMaxL );
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dCurLevelR = UpdateCurLevel ( dCurLevelR, sMaxR );
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}
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double CStereoSignalLevelMeter::UpdateCurLevel ( double dCurLevel,
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const short& sMax )
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{
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// decrease max with time
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if ( dCurLevel >= METER_FLY_BACK )
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{
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// TODO calculate factor from sample rate
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dCurLevel *= 0.95;
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}
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else
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{
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dCurLevel = 0;
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}
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// update current level -> only use maximum
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if ( static_cast<double> ( sMax ) > dCurLevel )
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{
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return static_cast<double> ( sMax );
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}
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else
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{
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return dCurLevel;
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}
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}
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double CStereoSignalLevelMeter::CalcLogResult ( const double& dLinearLevel )
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{
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const double dNormMicLevel = dLinearLevel / _MAXSHORT;
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// logarithmic measure
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if ( dNormMicLevel > 0 )
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{
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return 20.0 * log10 ( dNormMicLevel );
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}
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else
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{
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return -100000.0; // large negative value
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}
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}
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// CRC -------------------------------------------------------------------------
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void CCRC::Reset()
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{
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// init state shift-register with ones. Set all registers to "1" with
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// bit-wise not operation
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iStateShiftReg = ~uint32_t ( 0 );
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}
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void CCRC::AddByte ( const uint8_t byNewInput )
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{
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for ( int i = 0; i < 8; i++ )
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{
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// shift bits in shift-register for transistion
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iStateShiftReg <<= 1;
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// take bit, which was shifted out of the register-size and place it
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// at the beginning (LSB)
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// (If condition is not satisfied, implicitely a "0" is added)
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if ( ( iStateShiftReg & iBitOutMask) > 0 )
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{
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iStateShiftReg |= 1;
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}
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// add new data bit to the LSB
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if ( ( byNewInput & ( 1 << ( 8 - i - 1 ) ) ) > 0 )
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{
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iStateShiftReg ^= 1;
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}
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// add mask to shift-register if first bit is true
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if ( iStateShiftReg & 1 )
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{
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iStateShiftReg ^= iPoly;
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}
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}
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}
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uint32_t CCRC::GetCRC()
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{
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// return inverted shift-register (1's complement)
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iStateShiftReg = ~iStateShiftReg;
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// remove bit which where shifted out of the shift-register frame
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return iStateShiftReg & ( iBitOutMask - 1 );
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}
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/******************************************************************************\
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* Audio Reverberation *
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\******************************************************************************/
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/*
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The following code is based on "JCRev: John Chowning's reverberator class"
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by Perry R. Cook and Gary P. Scavone, 1995 - 2004
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which is in "The Synthesis ToolKit in C++ (STK)"
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http://ccrma.stanford.edu/software/stk
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Original description:
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This class is derived from the CLM JCRev function, which is based on the use
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of networks of simple allpass and comb delay filters. This class implements
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three series allpass units, followed by four parallel comb filters, and two
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decorrelation delay lines in parallel at the output.
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*/
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void CAudioReverb::Init ( const int iSampleRate, const double rT60 )
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{
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int delay, i;
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// delay lengths for 44100 Hz sample rate
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int lengths[9] = { 1777, 1847, 1993, 2137, 389, 127, 43, 211, 179 };
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const double scaler = (double) iSampleRate / 44100.0;
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if ( scaler != 1.0 )
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{
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for ( i = 0; i < 9; i++ )
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{
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delay = (int) floor ( scaler * lengths[i] );
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if ( ( delay & 1 ) == 0 )
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{
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delay++;
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}
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while ( !isPrime ( delay ) )
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{
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delay += 2;
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}
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lengths[i] = delay;
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}
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}
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for ( i = 0; i < 3; i++ )
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{
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allpassDelays_[i].Init ( lengths[i + 4] );
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}
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for ( i = 0; i < 4; i++ )
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{
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combDelays_[i].Init ( lengths[i] );
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}
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setT60 ( rT60, iSampleRate );
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allpassCoefficient_ = (double) 0.7;
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Clear();
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}
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bool CAudioReverb::isPrime ( const int number )
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{
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/*
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Returns true if argument value is prime. Taken from "class Effect" in
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"STK abstract effects parent class".
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*/
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if ( number == 2 )
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{
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return true;
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}
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if ( number & 1 )
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{
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for ( int i = 3; i < (int) sqrt ( (double) number ) + 1; i += 2 )
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{
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if ( ( number % i ) == 0 )
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{
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return false;
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}
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}
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return true; // prime
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}
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else
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{
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return false; // even
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}
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}
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void CAudioReverb::Clear()
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{
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// reset and clear all internal state
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allpassDelays_[0].Reset ( 0 );
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allpassDelays_[1].Reset ( 0 );
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allpassDelays_[2].Reset ( 0 );
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combDelays_[0].Reset ( 0 );
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combDelays_[1].Reset ( 0 );
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combDelays_[2].Reset ( 0 );
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combDelays_[3].Reset ( 0 );
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}
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void CAudioReverb::setT60 ( const double rT60,
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const int iSampleRate )
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{
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// set the reverberation T60 decay time
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for ( int i = 0; i < 4; i++ )
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{
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combCoefficient_[i] = pow ( (double) 10.0, (double) ( -3.0 *
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combDelays_[i].Size() / ( rT60 * iSampleRate ) ) );
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}
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}
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double CAudioReverb::ProcessSample ( const double input )
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{
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// compute one output sample
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double temp, temp0, temp1, temp2;
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temp = allpassDelays_[0].Get();
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temp0 = allpassCoefficient_ * temp;
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temp0 += input;
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allpassDelays_[0].Add ( (int) temp0 );
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temp0 = - ( allpassCoefficient_ * temp0 ) + temp;
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temp = allpassDelays_[1].Get();
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temp1 = allpassCoefficient_ * temp;
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temp1 += temp0;
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allpassDelays_[1].Add ( (int) temp1 );
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temp1 = - ( allpassCoefficient_ * temp1 ) + temp;
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temp = allpassDelays_[2].Get();
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temp2 = allpassCoefficient_ * temp;
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temp2 += temp1;
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allpassDelays_[2].Add ( (int) temp2 );
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temp2 = - ( allpassCoefficient_ * temp2 ) + temp;
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const double temp3 = temp2 + ( combCoefficient_[0] * combDelays_[0].Get() );
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const double temp4 = temp2 + ( combCoefficient_[1] * combDelays_[1].Get() );
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const double temp5 = temp2 + ( combCoefficient_[2] * combDelays_[2].Get() );
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const double temp6 = temp2 + ( combCoefficient_[3] * combDelays_[3].Get() );
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combDelays_[0].Add ( (int) temp3 );
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combDelays_[1].Add ( (int) temp4 );
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combDelays_[2].Add ( (int) temp5 );
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combDelays_[3].Add ( (int) temp6 );
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return ( temp3 + temp4 + temp5 + temp6 ) * (double) 0.5;
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}
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/******************************************************************************\
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* GUI Utilities *
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\******************************************************************************/
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// About dialog ----------------------------------------------------------------
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CAboutDlg::CAboutDlg ( QWidget* parent ) : QDialog ( parent )
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{
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setupUi ( this );
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// set the text for the about dialog html text control
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txvCredits->setOpenExternalLinks ( true );
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txvCredits->setText (
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"<p>" // general description of llcon software
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"<big><b>llcon</b> " + tr("The llcon software enables musicians to "
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"perform real-time jam sessions over the internet. There is a llcon "
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"server which collects the audio data from each llcon client, "
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"mixes the audio data and sends the mix back to each client.") +
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"</big></p><br>"
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"<p><font face=\"courier\">" // GPL header text
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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.<br>This program is distributed in "
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"the hope that it will be useful, but WITHOUT ANY WARRANTY; without "
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"even the implied warranty of MERCHANTABILITY or FITNESS FOR A "
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"PARTICULAR PURPOSE. See the GNU General Public License for more "
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"details.<br>You should have received a copy of the GNU General Public "
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"License along with his program; if not, write to the Free Software "
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"Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 "
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"USA"
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"</font></p><br>"
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"<p><b>" + // libraries used by this compilation of llcon
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tr("llcon uses the following libraries, resources or code snippets:") +
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"</b></p>"
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"<ul>"
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"<li>Qt cross-platform application framework: "
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"<i><a href=""http://trolltech.com"">http://trolltech.com</a></i></li>"
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"<li>The CELT ultra-low delay audio codec: "
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"<i><a href=""http://www.celt-codec.org"">http://www.celt-codec.org</a></i></li>"
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"<li>Audio reverberation code: by Perry R. Cook and Gary P. Scavone, "
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"1995 - 2004 (taken from "
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"<i><a href=""http://ccrma.stanford.edu/software/stk"">"
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"The Synthesis ToolKit in C++ (STK)</a></i>)</li>"
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"<li>Parts from Dream DRM Receiver by Volker Fischer and Alexander "
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"Kurpiers: "
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"<i><a href=""http://drm.sf.net"">http://drm.sf.net</a></i></li>"
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"<li>Some pixmaps are from <i>Clker.com - vector clip art online, "
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"royalty free & public domain</i></li>"
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"</ul>"
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"</center><br>");
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// set version number in about dialog
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lblVersion->setText ( GetVersionAndNameStr() );
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}
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QString CAboutDlg::GetVersionAndNameStr ( const bool bWithHtml )
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{
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QString strVersionText = "";
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// name, short description and GPL hint
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if ( bWithHtml )
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{
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strVersionText += "<center><b>";
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}
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else
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{
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strVersionText += " *** ";
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}
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strVersionText += tr ( "llcon, Version " ) + VERSION;
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if ( bWithHtml )
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{
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strVersionText += "</b><br>";
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}
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else
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{
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strVersionText += "\n *** ";
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}
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strVersionText += tr ( "llcon, Low-Latency (internet) CONnection" );
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if ( bWithHtml )
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{
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strVersionText += "<br>";
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}
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else
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{
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strVersionText += "\n *** ";
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}
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strVersionText += tr ( "Under the GNU General Public License (GPL)" );
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if ( bWithHtml )
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{
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strVersionText += "</center>";
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}
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return strVersionText;
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}
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// Help menu -------------------------------------------------------------------
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CLlconHelpMenu::CLlconHelpMenu ( QWidget* parent ) : QMenu ( "&?", parent )
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{
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// standard help menu consists of about and what's this help
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addAction ( tr ( "What's &This" ), this,
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SLOT ( OnHelpWhatsThis() ), QKeySequence ( Qt::SHIFT + Qt::Key_F1 ) );
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addSeparator();
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addAction ( tr ( "&Download Link..." ), this,
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SLOT ( OnHelpDownloadLink() ) );
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addSeparator();
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addAction ( tr ( "&About..." ), this, SLOT ( OnHelpAbout() ) );
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}
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|
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/******************************************************************************\
|
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* Other Classes *
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\******************************************************************************/
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bool LlconNetwUtil::ParseNetworkAddress ( QString strAddress,
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CHostAddress& HostAddress )
|
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{
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QHostAddress InetAddr;
|
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quint16 iNetPort = LLCON_DEFAULT_PORT_NUMBER;
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|
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// parse input address for the type [IP address]:[port number]
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QString strPort = strAddress.section ( ":", 1, 1 );
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if ( !strPort.isEmpty() )
|
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{
|
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// a colon is present in the address string, try to extract port number
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iNetPort = strPort.toInt();
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|
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// extract address port before colon (should be actual internet address)
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strAddress = strAddress.section ( ":", 0, 0 );
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}
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|
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// first try if this is an IP number an can directly applied to QHostAddress
|
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if ( !InetAddr.setAddress ( strAddress ) )
|
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{
|
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// it was no vaild IP address, try to get host by name, assuming
|
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// that the string contains a valid host name string
|
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const QHostInfo HostInfo = QHostInfo::fromName ( strAddress );
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|
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if ( HostInfo.error() == QHostInfo::NoError )
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{
|
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// apply IP address to QT object
|
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if ( !HostInfo.addresses().isEmpty() )
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{
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// use the first IP address
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InetAddr = HostInfo.addresses().first();
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}
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}
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else
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{
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return false; // invalid address
|
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}
|
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}
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|
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HostAddress = CHostAddress ( InetAddr, iNetPort );
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return true;
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}
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|
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|
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/******************************************************************************\
|
||||
* Global Functions Implementation *
|
||||
\******************************************************************************/
|
||||
void DebugError ( const QString& pchErDescr,
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const QString& pchPar1Descr,
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const double dPar1,
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const QString& pchPar2Descr,
|
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const double dPar2 )
|
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{
|
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QFile File ( "DebugError.dat" );
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if ( File.open ( QIODevice::Append ) )
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{
|
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// append new line in logging file
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QTextStream out ( &File );
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out << pchErDescr << " ### " <<
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pchPar1Descr << ": " << QString().setNum ( dPar1, 'f', 2 ) <<
|
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" ### " <<
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pchPar2Descr << ": " << QString().setNum ( dPar2, 'f', 2 ) <<
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endl;
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File.close();
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}
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printf ( "\nDebug error! For more information see test/DebugError.dat\n" );
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exit ( 1 );
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}
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/******************************************************************************\
|
||||
* Copyright (c) 2004-2011
|
||||
*
|
||||
* Author(s):
|
||||
* Volker Fischer
|
||||
*
|
||||
******************************************************************************
|
||||
*
|
||||
* 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.,
|
||||
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*
|
||||
\******************************************************************************/
|
||||
|
||||
#include "util.h"
|
||||
|
||||
|
||||
/* Implementation *************************************************************/
|
||||
// Input level meter implementation --------------------------------------------
|
||||
void CStereoSignalLevelMeter::Update ( CVector<short>& vecsAudio )
|
||||
{
|
||||
// get the stereo vector size
|
||||
const int iStereoVecSize = vecsAudio.Size();
|
||||
|
||||
// Get maximum of current block
|
||||
//
|
||||
// Speed optimization:
|
||||
// - we only make use of the positive values and ignore the negative ones
|
||||
// -> we do not need to call the fabs() function
|
||||
// - we only evaluate every third sample
|
||||
//
|
||||
// With these speed optimizations we might loose some information in
|
||||
// special cases but for the average music signals the following code
|
||||
// should give good results.
|
||||
//
|
||||
short sMaxL = 0;
|
||||
short sMaxR = 0;
|
||||
for ( int i = 0; i < iStereoVecSize; i += 6 ) // 2 * 3 = 6 -> stereo
|
||||
{
|
||||
// left channel
|
||||
if ( sMaxL < vecsAudio[i] )
|
||||
{
|
||||
sMaxL = vecsAudio[i];
|
||||
}
|
||||
|
||||
// right channel
|
||||
if ( sMaxR < vecsAudio[i + 1] )
|
||||
{
|
||||
sMaxR = vecsAudio[i + 1];
|
||||
}
|
||||
}
|
||||
|
||||
dCurLevelL = UpdateCurLevel ( dCurLevelL, sMaxL );
|
||||
dCurLevelR = UpdateCurLevel ( dCurLevelR, sMaxR );
|
||||
}
|
||||
|
||||
double CStereoSignalLevelMeter::UpdateCurLevel ( double dCurLevel,
|
||||
const short& sMax )
|
||||
{
|
||||
// decrease max with time
|
||||
if ( dCurLevel >= METER_FLY_BACK )
|
||||
{
|
||||
// TODO calculate factor from sample rate
|
||||
dCurLevel *= 0.95;
|
||||
}
|
||||
else
|
||||
{
|
||||
dCurLevel = 0;
|
||||
}
|
||||
|
||||
// update current level -> only use maximum
|
||||
if ( static_cast<double> ( sMax ) > dCurLevel )
|
||||
{
|
||||
return static_cast<double> ( sMax );
|
||||
}
|
||||
else
|
||||
{
|
||||
return dCurLevel;
|
||||
}
|
||||
}
|
||||
|
||||
double CStereoSignalLevelMeter::CalcLogResult ( const double& dLinearLevel )
|
||||
{
|
||||
const double dNormMicLevel = dLinearLevel / _MAXSHORT;
|
||||
|
||||
// logarithmic measure
|
||||
if ( dNormMicLevel > 0 )
|
||||
{
|
||||
return 20.0 * log10 ( dNormMicLevel );
|
||||
}
|
||||
else
|
||||
{
|
||||
return -100000.0; // large negative value
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// CRC -------------------------------------------------------------------------
|
||||
void CCRC::Reset()
|
||||
{
|
||||
// init state shift-register with ones. Set all registers to "1" with
|
||||
// bit-wise not operation
|
||||
iStateShiftReg = ~uint32_t ( 0 );
|
||||
}
|
||||
|
||||
void CCRC::AddByte ( const uint8_t byNewInput )
|
||||
{
|
||||
for ( int i = 0; i < 8; i++ )
|
||||
{
|
||||
// shift bits in shift-register for transistion
|
||||
iStateShiftReg <<= 1;
|
||||
|
||||
// take bit, which was shifted out of the register-size and place it
|
||||
// at the beginning (LSB)
|
||||
// (If condition is not satisfied, implicitely a "0" is added)
|
||||
if ( ( iStateShiftReg & iBitOutMask) > 0 )
|
||||
{
|
||||
iStateShiftReg |= 1;
|
||||
}
|
||||
|
||||
// add new data bit to the LSB
|
||||
if ( ( byNewInput & ( 1 << ( 8 - i - 1 ) ) ) > 0 )
|
||||
{
|
||||
iStateShiftReg ^= 1;
|
||||
}
|
||||
|
||||
// add mask to shift-register if first bit is true
|
||||
if ( iStateShiftReg & 1 )
|
||||
{
|
||||
iStateShiftReg ^= iPoly;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
uint32_t CCRC::GetCRC()
|
||||
{
|
||||
// return inverted shift-register (1's complement)
|
||||
iStateShiftReg = ~iStateShiftReg;
|
||||
|
||||
// remove bit which where shifted out of the shift-register frame
|
||||
return iStateShiftReg & ( iBitOutMask - 1 );
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************\
|
||||
* Audio Reverberation *
|
||||
\******************************************************************************/
|
||||
/*
|
||||
The following code is based on "JCRev: John Chowning's reverberator class"
|
||||
by Perry R. Cook and Gary P. Scavone, 1995 - 2004
|
||||
which is in "The Synthesis ToolKit in C++ (STK)"
|
||||
http://ccrma.stanford.edu/software/stk
|
||||
|
||||
Original description:
|
||||
This class is derived from the CLM JCRev function, which is based on the use
|
||||
of networks of simple allpass and comb delay filters. This class implements
|
||||
three series allpass units, followed by four parallel comb filters, and two
|
||||
decorrelation delay lines in parallel at the output.
|
||||
*/
|
||||
void CAudioReverb::Init ( const int iSampleRate, const double rT60 )
|
||||
{
|
||||
int delay, i;
|
||||
|
||||
// delay lengths for 44100 Hz sample rate
|
||||
int lengths[9] = { 1777, 1847, 1993, 2137, 389, 127, 43, 211, 179 };
|
||||
const double scaler = (double) iSampleRate / 44100.0;
|
||||
|
||||
if ( scaler != 1.0 )
|
||||
{
|
||||
for ( i = 0; i < 9; i++ )
|
||||
{
|
||||
delay = (int) floor ( scaler * lengths[i] );
|
||||
|
||||
if ( ( delay & 1 ) == 0 )
|
||||
{
|
||||
delay++;
|
||||
}
|
||||
|
||||
while ( !isPrime ( delay ) )
|
||||
{
|
||||
delay += 2;
|
||||
}
|
||||
|
||||
lengths[i] = delay;
|
||||
}
|
||||
}
|
||||
|
||||
for ( i = 0; i < 3; i++ )
|
||||
{
|
||||
allpassDelays_[i].Init ( lengths[i + 4] );
|
||||
}
|
||||
|
||||
for ( i = 0; i < 4; i++ )
|
||||
{
|
||||
combDelays_[i].Init ( lengths[i] );
|
||||
}
|
||||
|
||||
setT60 ( rT60, iSampleRate );
|
||||
allpassCoefficient_ = (double) 0.7;
|
||||
Clear();
|
||||
}
|
||||
|
||||
bool CAudioReverb::isPrime ( const int number )
|
||||
{
|
||||
/*
|
||||
Returns true if argument value is prime. Taken from "class Effect" in
|
||||
"STK abstract effects parent class".
|
||||
*/
|
||||
if ( number == 2 )
|
||||
{
|
||||
return true;
|
||||
}
|
||||
|
||||
if ( number & 1 )
|
||||
{
|
||||
for ( int i = 3; i < (int) sqrt ( (double) number ) + 1; i += 2 )
|
||||
{
|
||||
if ( ( number % i ) == 0 )
|
||||
{
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true; // prime
|
||||
}
|
||||
else
|
||||
{
|
||||
return false; // even
|
||||
}
|
||||
}
|
||||
|
||||
void CAudioReverb::Clear()
|
||||
{
|
||||
// reset and clear all internal state
|
||||
allpassDelays_[0].Reset ( 0 );
|
||||
allpassDelays_[1].Reset ( 0 );
|
||||
allpassDelays_[2].Reset ( 0 );
|
||||
combDelays_[0].Reset ( 0 );
|
||||
combDelays_[1].Reset ( 0 );
|
||||
combDelays_[2].Reset ( 0 );
|
||||
combDelays_[3].Reset ( 0 );
|
||||
}
|
||||
|
||||
void CAudioReverb::setT60 ( const double rT60,
|
||||
const int iSampleRate )
|
||||
{
|
||||
// set the reverberation T60 decay time
|
||||
for ( int i = 0; i < 4; i++ )
|
||||
{
|
||||
combCoefficient_[i] = pow ( (double) 10.0, (double) ( -3.0 *
|
||||
combDelays_[i].Size() / ( rT60 * iSampleRate ) ) );
|
||||
}
|
||||
}
|
||||
|
||||
double CAudioReverb::ProcessSample ( const double input )
|
||||
{
|
||||
// compute one output sample
|
||||
double temp, temp0, temp1, temp2;
|
||||
|
||||
temp = allpassDelays_[0].Get();
|
||||
temp0 = allpassCoefficient_ * temp;
|
||||
temp0 += input;
|
||||
allpassDelays_[0].Add ( (int) temp0 );
|
||||
temp0 = - ( allpassCoefficient_ * temp0 ) + temp;
|
||||
|
||||
temp = allpassDelays_[1].Get();
|
||||
temp1 = allpassCoefficient_ * temp;
|
||||
temp1 += temp0;
|
||||
allpassDelays_[1].Add ( (int) temp1 );
|
||||
temp1 = - ( allpassCoefficient_ * temp1 ) + temp;
|
||||
|
||||
temp = allpassDelays_[2].Get();
|
||||
temp2 = allpassCoefficient_ * temp;
|
||||
temp2 += temp1;
|
||||
allpassDelays_[2].Add ( (int) temp2 );
|
||||
temp2 = - ( allpassCoefficient_ * temp2 ) + temp;
|
||||
|
||||
const double temp3 = temp2 + ( combCoefficient_[0] * combDelays_[0].Get() );
|
||||
const double temp4 = temp2 + ( combCoefficient_[1] * combDelays_[1].Get() );
|
||||
const double temp5 = temp2 + ( combCoefficient_[2] * combDelays_[2].Get() );
|
||||
const double temp6 = temp2 + ( combCoefficient_[3] * combDelays_[3].Get() );
|
||||
|
||||
combDelays_[0].Add ( (int) temp3 );
|
||||
combDelays_[1].Add ( (int) temp4 );
|
||||
combDelays_[2].Add ( (int) temp5 );
|
||||
combDelays_[3].Add ( (int) temp6 );
|
||||
|
||||
return ( temp3 + temp4 + temp5 + temp6 ) * (double) 0.5;
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************\
|
||||
* GUI Utilities *
|
||||
\******************************************************************************/
|
||||
// About dialog ----------------------------------------------------------------
|
||||
CAboutDlg::CAboutDlg ( QWidget* parent ) : QDialog ( parent )
|
||||
{
|
||||
setupUi ( this );
|
||||
|
||||
// set the text for the about dialog html text control
|
||||
txvCredits->setOpenExternalLinks ( true );
|
||||
txvCredits->setText (
|
||||
"<p>" // general description of llcon software
|
||||
"<big><b>llcon</b> " + tr("The llcon software enables musicians to "
|
||||
"perform real-time jam sessions over the internet. There is a llcon "
|
||||
"server which collects the audio data from each llcon client, "
|
||||
"mixes the audio data and sends the mix back to each client.") +
|
||||
"</big></p><br>"
|
||||
"<p><font face=\"courier\">" // GPL header text
|
||||
"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.<br>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.<br>You should have received a copy of the GNU General Public "
|
||||
"License along with his program; if not, write to the Free Software "
|
||||
"Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 "
|
||||
"USA"
|
||||
"</font></p><br>"
|
||||
"<p><b>" + // libraries used by this compilation of llcon
|
||||
tr("llcon uses the following libraries, resources or code snippets:") +
|
||||
"</b></p>"
|
||||
"<ul>"
|
||||
"<li>Qt cross-platform application framework: "
|
||||
"<i><a href=""http://trolltech.com"">http://trolltech.com</a></i></li>"
|
||||
"<li>The CELT ultra-low delay audio codec: "
|
||||
"<i><a href=""http://www.celt-codec.org"">http://www.celt-codec.org</a></i></li>"
|
||||
"<li>Audio reverberation code: by Perry R. Cook and Gary P. Scavone, "
|
||||
"1995 - 2004 (taken from "
|
||||
"<i><a href=""http://ccrma.stanford.edu/software/stk"">"
|
||||
"The Synthesis ToolKit in C++ (STK)</a></i>)</li>"
|
||||
"<li>Parts from Dream DRM Receiver by Volker Fischer and Alexander "
|
||||
"Kurpiers: "
|
||||
"<i><a href=""http://drm.sf.net"">http://drm.sf.net</a></i></li>"
|
||||
"<li>Some pixmaps are from <i>Clker.com - vector clip art online, "
|
||||
"royalty free & public domain</i></li>"
|
||||
"</ul>"
|
||||
"</center><br>");
|
||||
|
||||
// set version number in about dialog
|
||||
lblVersion->setText ( GetVersionAndNameStr() );
|
||||
}
|
||||
|
||||
QString CAboutDlg::GetVersionAndNameStr ( const bool bWithHtml )
|
||||
{
|
||||
QString strVersionText = "";
|
||||
|
||||
// name, short description and GPL hint
|
||||
if ( bWithHtml )
|
||||
{
|
||||
strVersionText += "<center><b>";
|
||||
}
|
||||
else
|
||||
{
|
||||
strVersionText += " *** ";
|
||||
}
|
||||
|
||||
strVersionText += tr ( "llcon, Version " ) + VERSION;
|
||||
|
||||
if ( bWithHtml )
|
||||
{
|
||||
strVersionText += "</b><br>";
|
||||
}
|
||||
else
|
||||
{
|
||||
strVersionText += "\n *** ";
|
||||
}
|
||||
|
||||
strVersionText += tr ( "llcon, Low-Latency (internet) CONnection" );
|
||||
|
||||
if ( bWithHtml )
|
||||
{
|
||||
strVersionText += "<br>";
|
||||
}
|
||||
else
|
||||
{
|
||||
strVersionText += "\n *** ";
|
||||
}
|
||||
|
||||
strVersionText += tr ( "Under the GNU General Public License (GPL)" );
|
||||
|
||||
if ( bWithHtml )
|
||||
{
|
||||
strVersionText += "</center>";
|
||||
}
|
||||
|
||||
return strVersionText;
|
||||
}
|
||||
|
||||
|
||||
// Help menu -------------------------------------------------------------------
|
||||
CLlconHelpMenu::CLlconHelpMenu ( QWidget* parent ) : QMenu ( "&?", parent )
|
||||
{
|
||||
// standard help menu consists of about and what's this help
|
||||
addAction ( tr ( "What's &This" ), this,
|
||||
SLOT ( OnHelpWhatsThis() ), QKeySequence ( Qt::SHIFT + Qt::Key_F1 ) );
|
||||
|
||||
addSeparator();
|
||||
addAction ( tr ( "&Download Link..." ), this,
|
||||
SLOT ( OnHelpDownloadLink() ) );
|
||||
|
||||
addSeparator();
|
||||
addAction ( tr ( "&About..." ), this, SLOT ( OnHelpAbout() ) );
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************\
|
||||
* Other Classes *
|
||||
\******************************************************************************/
|
||||
bool LlconNetwUtil::ParseNetworkAddress ( QString strAddress,
|
||||
CHostAddress& HostAddress )
|
||||
{
|
||||
QHostAddress InetAddr;
|
||||
quint16 iNetPort = LLCON_DEFAULT_PORT_NUMBER;
|
||||
|
||||
// init requested host address with invalid address first
|
||||
HostAddress = CHostAddress();
|
||||
|
||||
// parse input address for the type [IP address]:[port number]
|
||||
QString strPort = strAddress.section ( ":", 1, 1 );
|
||||
if ( !strPort.isEmpty() )
|
||||
{
|
||||
// a colon is present in the address string, try to extract port number
|
||||
iNetPort = strPort.toInt();
|
||||
|
||||
// extract address port before colon (should be actual internet address)
|
||||
strAddress = strAddress.section ( ":", 0, 0 );
|
||||
}
|
||||
|
||||
// first try if this is an IP number an can directly applied to QHostAddress
|
||||
if ( !InetAddr.setAddress ( strAddress ) )
|
||||
{
|
||||
// it was no vaild IP address, try to get host by name, assuming
|
||||
// that the string contains a valid host name string
|
||||
const QHostInfo HostInfo = QHostInfo::fromName ( strAddress );
|
||||
|
||||
if ( HostInfo.error() == QHostInfo::NoError )
|
||||
{
|
||||
// apply IP address to QT object
|
||||
if ( !HostInfo.addresses().isEmpty() )
|
||||
{
|
||||
// use the first IP address
|
||||
InetAddr = HostInfo.addresses().first();
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
return false; // invalid address
|
||||
}
|
||||
}
|
||||
|
||||
HostAddress = CHostAddress ( InetAddr, iNetPort );
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************\
|
||||
* Global Functions Implementation *
|
||||
\******************************************************************************/
|
||||
void DebugError ( const QString& pchErDescr,
|
||||
const QString& pchPar1Descr,
|
||||
const double dPar1,
|
||||
const QString& pchPar2Descr,
|
||||
const double dPar2 )
|
||||
{
|
||||
QFile File ( "DebugError.dat" );
|
||||
if ( File.open ( QIODevice::Append ) )
|
||||
{
|
||||
// append new line in logging file
|
||||
QTextStream out ( &File );
|
||||
out << pchErDescr << " ### " <<
|
||||
pchPar1Descr << ": " << QString().setNum ( dPar1, 'f', 2 ) <<
|
||||
" ### " <<
|
||||
pchPar2Descr << ": " << QString().setNum ( dPar2, 'f', 2 ) <<
|
||||
endl;
|
||||
|
||||
File.close();
|
||||
}
|
||||
printf ( "\nDebug error! For more information see test/DebugError.dat\n" );
|
||||
exit ( 1 );
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue