| 96 | } |
| 97 | |
| 98 | bool BitcrushEffect::processAudioBuffer( sampleFrame* buf, const fpp_t frames ) |
| 99 | { |
| 100 | if( !isEnabled() || !isRunning () ) |
| 101 | { |
| 102 | return( false ); |
| 103 | } |
| 104 | |
| 105 | // update values |
| 106 | if( m_needsUpdate || m_controls.m_rateEnabled.isValueChanged() ) |
| 107 | { |
| 108 | m_rateEnabled = m_controls.m_rateEnabled.value(); |
| 109 | m_bitCounterL = 0.0f; |
| 110 | m_bitCounterR = 0.0f; |
| 111 | } |
| 112 | if( m_needsUpdate || m_controls.m_depthEnabled.isValueChanged() ) |
| 113 | { |
| 114 | m_depthEnabled = m_controls.m_depthEnabled.value(); |
| 115 | } |
| 116 | if( m_needsUpdate || m_controls.m_rate.isValueChanged() || m_controls.m_stereoDiff.isValueChanged() ) |
| 117 | { |
| 118 | const float rate = m_controls.m_rate.value(); |
| 119 | const float diff = m_controls.m_stereoDiff.value() * 0.005 * rate; |
| 120 | |
| 121 | m_rateCoeffL = ( m_sampleRate * OS_RATE ) / ( rate - diff ); |
| 122 | m_rateCoeffR = ( m_sampleRate * OS_RATE ) / ( rate + diff ); |
| 123 | |
| 124 | m_bitCounterL = 0.0f; |
| 125 | m_bitCounterR = 0.0f; |
| 126 | } |
| 127 | if( m_needsUpdate || m_controls.m_levels.isValueChanged() ) |
| 128 | { |
| 129 | m_levels = m_controls.m_levels.value(); |
| 130 | m_levelsRatio = 1.0f / (float) m_levels; |
| 131 | } |
| 132 | if( m_needsUpdate || m_controls.m_inGain.isValueChanged() ) |
| 133 | { |
| 134 | m_inGain = dbfsToAmp( m_controls.m_inGain.value() ); |
| 135 | } |
| 136 | if( m_needsUpdate || m_controls.m_outGain.isValueChanged() ) |
| 137 | { |
| 138 | m_outGain = dbfsToAmp( m_controls.m_outGain.value() ); |
| 139 | } |
| 140 | if( m_needsUpdate || m_controls.m_outClip.isValueChanged() ) |
| 141 | { |
| 142 | m_outClip = dbfsToAmp( m_controls.m_outClip.value() ); |
| 143 | } |
| 144 | m_needsUpdate = false; |
| 145 | |
| 146 | const float noiseAmt = m_controls.m_inNoise.value() * 0.01f; |
| 147 | |
| 148 | // read input buffer and write it to oversampled buffer |
| 149 | if( m_rateEnabled ) // rate crushing enabled so do that |
| 150 | { |
| 151 | for( int f = 0; f < frames; ++f ) |
| 152 | { |
| 153 | for( int o = 0; o < OS_RATE; ++o ) |
| 154 | { |
| 155 | m_buffer[f * OS_RATE + o][0] = m_left; |