Fixes calf-studio-gear#278: Do not read/write unconnected ports

src/calf/modules_filter.h

@@ -235,8 +235,8 @@ public frequency_response_line_graph
             float values[] = {0,0,0,0};
             for (uint32_t i = offset; i < offset + numsamples; i++) {
                 outs[0][i] = ins[0][i];
-                outs[1][i] = ins[1][i];
-                //float values[] = {ins[0][i],ins[1][i],outs[0][i],outs[1][i]};
+                if(outs[1])
+                    outs[1][i] = ins[ins[1]?1:0][i];
                 meters.process(values);
                 ostate = -1;
             }
@@ -250,19 +250,24 @@ public frequency_response_line_graph
                 if (outputs_mask & 1) {
                     ostate |= FilterClass::process_channel(0, ins[0] + offset, outs[0] + offset, numnow, inputs_mask & 1, *params[Metadata::param_level_in], *params[Metadata::param_level_out]);
                 }
-                if (outputs_mask & 2) {
-                    ostate |= FilterClass::process_channel(1, ins[1] + offset, outs[1] + offset, numnow, inputs_mask & 2, *params[Metadata::param_level_in], *params[Metadata::param_level_out]);
+                if (outputs_mask & 2 && outs[1]) {
+                    ostate |= FilterClass::process_channel(1, ins[(ins[1] ? 1 : 0)] + offset, outs[1] + offset, numnow, inputs_mask & 2, *params[Metadata::param_level_in], *params[Metadata::param_level_out]);
                 }
                 if (timer.elapsed()) {
                     on_timer();
                 }
                 for (uint32_t i = offset; i < offset + numnow; i++) {
-                    float values[] = {ins[0][i] * *params[Metadata::param_level_in], ins[1][i] * *params[Metadata::param_level_in], outs[0][i], outs[1][i]};
+                    float values[] = {
+                        ins[0][i] * *params[Metadata::param_level_in],
+                        (ins[ins[1]?1:0][i]) * *params[Metadata::param_level_in],
+                        outs[0][i],
+                        (outs[outs[1]?1:0][i])
+                    };
                     meters.process(values);
                 }
                 offset += numnow;
             }
-            bypass.crossfade(ins, outs, 2, orig_offset, orig_numsamples);
+            bypass.crossfade(ins, outs, 1 + (int)(ins[1] && outs[1]), orig_offset, orig_numsamples);
         }
         meters.fall(orig_numsamples);
         return ostate;

src/modules_comp.cpp

@@ -785,7 +785,8 @@ uint32_t compressor_audio_module::process(uint32_t offset, uint32_t numsamples,
         // everything bypassed
         while(offset < numsamples) {
             outs[0][offset] = ins[0][offset];
-            outs[1][offset] = ins[1][offset];
+            if(outs[1])
+                outs[1][offset] = ins[ins[1]?1:0][offset];
             float values[] = {0, 0, 1};
             meters.process(values);
             ++offset;
@@ -802,9 +803,9 @@ uint32_t compressor_audio_module::process(uint32_t offset, uint32_t numsamples,
             float outL = 0.f;
             float outR = 0.f;
             float inL = ins[0][offset];
-            float inR = ins[1][offset];
+            float inR = ins[ins[1]?1:0][offset];
             float Lin = ins[0][offset];
-            float Rin = ins[1][offset];
+            float Rin = ins[ins[1]?1:0][offset];
 
             // in level
             inR *= *params[param_level_in];
@@ -824,15 +825,16 @@ uint32_t compressor_audio_module::process(uint32_t offset, uint32_t numsamples,
 
             // send to output
             outs[0][offset] = outL;
-            outs[1][offset] = outR;
+            if(outs[1])
+                outs[1][offset] = outR;
 
             float values[] = {std::max(inL, inR), std::max(outL, outR), compressor.get_comp_level()};
             meters.process(values);
 
             // next sample
             ++offset;
         } // cycle trough samples
-        bypass.crossfade(ins, outs, 2, orig_offset, orig_numsamples);
+        bypass.crossfade(ins, outs, 1 + (int)(ins[1] && outs[1]), orig_offset, orig_numsamples);
     }
     meters.fall(numsamples);
     return outputs_mask;
@@ -2561,16 +2563,16 @@ uint32_t transientdesigner_audio_module::process(uint32_t offset, uint32_t numsa
     bool bypassed = bypass.update(*params[param_bypass] > 0.5f, numsamples);
     for(uint32_t i = offset; i < offset + numsamples; i++) {
         float L = ins[0][i];
-        float R = ins[1][i];
+        float R = ins[ins[1]?1:0][i];
         meter_inL   = 0.f;
         meter_inR   = 0.f;
         meter_outL  = 0.f;
         meter_outR  = 0.f;
         float s = (fabs(L) + fabs(R)) / 2;
         if(bypassed) {
             outs[0][i]  = ins[0][i];
-            outs[1][i]  = ins[1][i];
-
+            if(outs[1])
+                outs[1][i]  = ins[ins[1]?1:0][i];
         } else {
             // levels in
             L *= *params[param_level_in];
@@ -2600,10 +2602,12 @@ uint32_t transientdesigner_audio_module::process(uint32_t offset, uint32_t numsa
             // output
             if (*params[param_listen] > 0.5) {
                 outs[0][i] = s;
-                outs[1][i] = s;
+                if(outs[1])
+                    outs[1][i] = s;
             } else {
                 outs[0][i] = L;
-                outs[1][i] = R;
+                if(outs[1])
+                    outs[1][i] = R;
             }
             meter_outL = L;
             meter_outR = R;
@@ -2677,7 +2681,7 @@ uint32_t transientdesigner_audio_module::process(uint32_t offset, uint32_t numsa
         meters.process(mval);
     }
     if (!bypassed)
-        bypass.crossfade(ins, outs, 2, orig_offset, numsamples);
+        bypass.crossfade(ins, outs, 1 + (int)(ins[1] && outs[1]), orig_offset, numsamples);
     meters.fall(numsamples);
     return outputs_mask;
 }

src/modules_delay.cpp

@@ -432,7 +432,7 @@ void comp_delay_audio_module::set_sample_rate(uint32_t sr)
 uint32_t comp_delay_audio_module::process(uint32_t offset, uint32_t numsamples, uint32_t inputs_mask, uint32_t outputs_mask)
 {
     bool bypassed   = bypass.update(*params[param_bypass] > 0.5f, numsamples);
-    bool stereo     = ins[1];
+    bool stereo     = ins[1] && outs[1];
     uint32_t w_ptr  = write_ptr;
     uint32_t b_mask = buf_size - 2;
     uint32_t end    = offset + numsamples;
@@ -472,7 +472,7 @@ uint32_t comp_delay_audio_module::process(uint32_t offset, uint32_t numsamples,
             w_ptr = (w_ptr + 2) & b_mask;
             r_ptr = (r_ptr + 2) & b_mask;
 
-            float values[] = {L, R, outs[0][i], outs[1][i]};
+            float values[] = {L, R, outs[0][i], outs[(int)stereo][i]};
             meters.process(values);
         }
     }