Merge branch 'calf-updates'

* calf-updates:
  + Deesser: use correct threshold
  + Equalizer: remove unused variables
  + Gain reduction module: clearer authorship information
  + Framework: placeholder for waveshaper class (need it to merge further changes from Markus)
(cherry picked from commit 774bd74c77)

plugins/ladspa_effect/calf/calf/modules.h

@@ -1267,13 +1267,9 @@ public:
 /// Equalizer 5 Band by Markus Schmidt (based on Krzysztof's filters)
 class equalizer5band_audio_module: public audio_module<equalizer5band_metadata>, public frequency_response_line_graph  {
 private:
-    float hp_mode_old, hp_freq_old;
-    float lp_mode_old, lp_freq_old;
     float ls_level_old, ls_freq_old;
     float hs_level_old, hs_freq_old;
     float p_level_old[3], p_freq_old[3], p_q_old[3];
-    float hp_mode_old1, hp_freq_old1, hp_active_old1;
-    float lp_mode_old1, lp_freq_old1, lp_active_old1;
     float ls_level_old1, ls_freq_old1, ls_active_old1;
     float hs_level_old1, hs_freq_old1, hs_active_old1;
     float p_level_old1[3], p_freq_old1[3], p_q_old1[3], p_active_old1[3];

plugins/ladspa_effect/calf/calf/waveshaping.h

@@ -0,0 +1,37 @@
+/* Calf DSP Library
+ * Placeholder for waveshaping classes
+ *
+ * Copyright (C) 2001-2009 Krzysztof Foltman
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 
+ * Boston, MA 02111-1307, USA.
+ */
+#ifndef __CALF_WAVESHAPING_H
+#define __CALF_WAVESHAPING_H
+
+/// This will be a waveshaper... when I'll code it (-:
+/// (or get Tom Szlagyi's permission to use his own)
+class waveshaper {
+public:
+    waveshaper();
+    void activate() {}
+    void deactivate() {}
+    void set_params(float blend, float drive) {}
+    void set_sample_rate(uint32_t sr) {}
+    float process(float in) { return in; }
+    float get_distortion_level() { return 1; }
+};
+
+#endif

plugins/ladspa_effect/calf/src/modules_dsp.cpp

@@ -1543,7 +1543,7 @@ uint32_t deesser_audio_module::process(uint32_t offset, uint32_t numsamples, uin
             outs[0][offset] = outL;
             outs[1][offset] = outR;
             
-            if(std::max(fabs(leftSC), fabs(rightSC)) > 0.1) {
+            if(std::max(fabs(leftSC), fabs(rightSC)) > *params[param_threshold]) {
                 detected_led   = srate >> 3;
             }
             if(std::max(fabs(leftAC), fabs(rightAC)) > 1.f) {
@@ -1640,10 +1640,10 @@ int deesser_audio_module::get_changed_offsets(int index, int generation, int &su
     return false;
 }
 
-/// Gain reduction module implemented by Markus Schmidt
-/// Nearly all functions of this module are originally written
+/// Gain reduction module by Thor
+/// All functions of this module are originally written
 /// by Thor, while some features have been stripped (mainly stereo linking
-/// and frequency correction as implemented in his Compressor above)
+/// and frequency correction as implemented in Sidechain Compressor above)
 /// To save some CPU.
 ////////////////////////////////////////////////////////////////////////////////
 gain_reduction_audio_module::gain_reduction_audio_module()