From 17b50b26e6cc2ff58b655236fcd9ee75905d7833 Mon Sep 17 00:00:00 2001
From: Hybrid Dog <ovvv@web.de>
Date: Fri, 30 Mar 2018 19:26:22 +0200
Subject: [PATCH] wet doesnt work

---
 src/modules/module-ladspa-sink.c | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/src/modules/module-ladspa-sink.c b/src/modules/module-ladspa-sink.c
index d677381d..9855a778 100644
--- a/src/modules/module-ladspa-sink.c
+++ b/src/modules/module-ladspa-sink.c
@@ -63,6 +63,7 @@ PA_MODULE_USAGE(
       "plugin=<ladspa plugin name> "
       "label=<ladspa plugin label> "
       "control=<comma separated list of input control values> "
+      "wet=<wetness> "
       "input_ladspaport_map=<comma separated list of input LADSPA port names> "
       "output_ladspaport_map=<comma separated list of output LADSPA port names> "
       "autoloaded=<set if this module is being loaded automatically> "));
@@ -85,6 +86,7 @@ struct userdata {
     LADSPA_Data **input, **output;
     size_t block_size;
     LADSPA_Data *control;
+    float wet;
     long unsigned n_control;
 
     /* This is a dummy buffer. Every port must be connected, but we don't care
@@ -118,6 +120,7 @@ static const char* const valid_modargs[] = {
     "plugin",
     "label",
     "control",
+    "wet",
     "input_ladspaport_map",
     "output_ladspaport_map",
     "autoloaded",
@@ -464,7 +467,7 @@ static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk
     struct userdata *u;
     float *src, *dst;
     size_t fs;
-    unsigned n, h, c;
+    unsigned n, h, c, x;
     pa_memchunk tchunk;
 
     pa_sink_input_assert_ref(i);
@@ -506,6 +509,18 @@ static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk
         for (c = 0; c < u->input_count; c++)
             pa_sample_clamp(PA_SAMPLE_FLOAT32NE, u->input[c], sizeof(float), src+ h*u->max_ladspaport_count + c, u->channels*sizeof(float), n);
         u->descriptor->run(u->handle[h], n);
+
+// TODO: run_adding instead of wet
+        if (u->wet < 1.0f) {
+            float dry = 1.0f - u->wet;
+            for (c = 0; c < u->output_count; c++) {
+                for (x = 0; x < n; ++x) {
+                    u->output[c][x] = u->output[c][x] * u->wet +
+                        u->input[c][x] * dry;
+                }
+            }
+        }
+
         for (c = 0; c < u->output_count; c++)
             pa_sample_clamp(PA_SAMPLE_FLOAT32NE, dst + h*u->max_ladspaport_count + c, u->channels*sizeof(float), u->output[c], sizeof(float), n);
     }
@@ -986,9 +1001,10 @@ int pa__init(pa_module*m) {
     const char *plugin, *label, *input_ladspaport_map, *output_ladspaport_map;
     LADSPA_Descriptor_Function descriptor_func;
     unsigned long input_ladspaport[PA_CHANNELS_MAX], output_ladspaport[PA_CHANNELS_MAX];
-    const char *e, *cdata;
+    const char *e, *cdata, *wet_str;
     const LADSPA_Descriptor *d;
     unsigned long p, h, j, n_control, c;
+    double wet_d;
     pa_memchunk silence;
 
     pa_assert(m);
@@ -1054,6 +1070,15 @@ int pa__init(pa_module*m) {
     u->output = NULL;
     u->ss = ss;
 
+    wet_str = pa_modargs_get_value(ma, "wet", NULL);
+    if (pa_atod(wet_str, &wet_d) < 0) {
+        u->wet = 1.0f;
+    } else {
+        // wet should be in [0,1[
+        u->wet = (float)wet_d;
+        pa_log_debug("wet is set to %g", u->wet);
+    }
+
     /* If the LADSPA_PATH environment variable is not set, we use the
      * LADSPA_PATH preprocessor macro instead. The macro can contain characters
      * that need to be escaped (especially on Windows backslashes are common).
-- 
2.14.1