Differential D10971 Diff 28412 src/context/applets/analyzer/plugin/AnalyzerWorker.cpp

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src/context/applets/analyzer/plugin/AnalyzerWorker.cpp

Show First 20 Lines • Show All 178 Lines • ▼ Show 20 Line(s)178 {
179 m_currentScope[band.scopeIndex] += std::abs( m_out[k] ) * sqrt( k ); 179​ m_currentScope[band.scopeIndex] += std::abs( m_out[k] ) * sqrt( k );
180 numValues++; 180​ numValues++;
181 } 181​ }
182 m_currentScope[band.scopeIndex] /= numValues; 182​ m_currentScope[band.scopeIndex] /= numValues;
183 m_currentScope[band.scopeIndex] /= m_size / 2; 183​ m_currentScope[band.scopeIndex] /= m_size / 2;
184 } 184​ }
185 185​
186 // monotone cubic interpolation 186​ // monotone cubic interpolation
187​ if( !m_interpolatedScopeBands.isEmpty() )
188​ {
187 QVector<QPointF> data; 189​ QVector<QPointF> data;
188 for( uint k = 0; k < m_size / 2 + 1 && k <= m_interpolatedScopeBands.last().midK; k++ ) 190​ for( uint k = 0; k < m_size / 2 + 1 && k <= m_interpolatedScopeBands.last().midK; k++ )
189 { 191​ {
190 data << QPointF( k, std::abs( m_out[k] ) * sqrt( k ) / m_size * 2 ); 192​ data << QPointF( k, std::abs( m_out[k] ) * sqrt( k ) / m_size * 2 );
191 } 193​ }
192 // Get consecutive differences and slopes 194​ // Get consecutive differences and slopes
193 QVector<double> dys, dxs, ms; 195​ QVector<double> dys, dxs, ms;
194 for( int i = 0; i < data.size() - 1; i++ ) 196​ for( int i = 0; i < data.size() - 1; i++ )
▲ Show 20 Lines • Show All 46 Lines • ▼ Show 20 Line(s)242 else
241 scope = data[mid].y(); 243​ scope = data[mid].y();
242 } 244​ }
243 int i = qMax( 0, high ); 245​ int i = qMax( 0, high );
244 246​
245 // Interpolate 247​ // Interpolate
246 double diff = x - data[i].x(), diffSq = diff * diff; 248​ double diff = x - data[i].x(), diffSq = diff * diff;
247 scope = qMax( 0.0, data[i].y() + c1s[i] * diff + c2s[i] * diffSq + c3s[i] * diff * diffSq ); 249​ scope = qMax( 0.0, data[i].y() + c1s[i] * diff + c2s[i] * diffSq + c3s[i] * diff * diffSq );
248 } 250​ }
251​ }
249 252​
250 analyze(); 253​ analyze();
251} 254​}
252 255​
253void Analyzer::Worker::setSampleSize( uint size ) 256​void Analyzer::Worker::setSampleSize( uint size )
254{ 257​{
255 if( m_size == size ) 258​ if( m_size == size )
256 return; 259​ return;
Show All 21 Lines
278{ 281​{
279 m_currentScope.resize( size ); 282​ m_currentScope.resize( size );
280} 283​}
281 284​
282void Analyzer::Worker::calculateExpFactor( qreal minFreq, qreal maxFreq, int sampleRate ) 285​void Analyzer::Worker::calculateExpFactor( qreal minFreq, qreal maxFreq, int sampleRate )
283{ 286​{
284 DEBUG_BLOCK 287​ DEBUG_BLOCK
285 288​
289​ if( minFreq <= 0.0 )
290​ {
291​ warning() << "Minimum frequency must be greater than zero!";
292​ minFreq = 1.0;
293​ }
294​
286 if( minFreq >= maxFreq ) 295​ if( minFreq >= maxFreq )
287 { 296​ {
288 warning() << "Minimum frequency must be smaller than maximum frequency!"; 297​ warning() << "Minimum frequency must be smaller than maximum frequency!";
289 return; 298​ maxFreq = minFreq + 1.0;
299​ }
300​
301​ if( sampleRate == 0 )
302​ {
303​ debug() << "Reported impossible sample rate of zero. Assuming 44.1KHz.";
304​ sampleRate = 44100;
290 } 305​ }
291 306​
292 m_expFactor = pow( maxFreq / minFreq, 1.0 / m_currentScope.size() ); 307​ m_expFactor = pow( maxFreq / minFreq, 1.0 / m_currentScope.size() );
293 m_expectedDataTime = std::floor( (qreal)EngineController::DATAOUTPUT_DATA_SIZE * 1000.0 / sampleRate ); 308​ m_expectedDataTime = std::floor( (qreal)EngineController::DATAOUTPUT_DATA_SIZE * 1000.0 / sampleRate );
294 309​
295 m_interpolatedScopeBands.clear(); 310​ m_interpolatedScopeBands.clear();
296 m_notInterpolatedScopeBands.clear(); 311​ m_notInterpolatedScopeBands.clear();
297 const uint outputSize = m_size / 2 + 1; 312​ const uint outputSize = m_size / 2 + 1;
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