Mercurial > hg > vamp-live-host

changeset 14:bd4589c609c7

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* Add silence detection
author cannam
date Tue, 12 Dec 2006 12:34:03 +0000
parents 47b0a143db39
children df33703ace3b
files host/Processor.cpp host/Processor.h
diffstat 2 files changed, 31 insertions(+), 6 deletions(-) [+]
line wrap: on
line diff
--- a/host/Processor.cpp	Tue Dec 12 10:38:55 2006 +0000
+++ b/host/Processor.cpp	Tue Dec 12 12:34:03 2006 +0000
@@ -160,6 +160,17 @@
 
                 while (toUse >= block) {
 
+                    bool silentInput = true;
+                    for (size_t s = 0; s < block; ++s) {
+                        for (size_t c = 0; c < ch; ++c) {
+                            if (fabsf(buffers[c][s + off]) > 0.00001) {
+                                silentInput = false;
+                                break;
+                            }
+                        }
+                        if (!silentInput) break;
+                    }
+
                     bool haveTransformed = false;
                 
                     for (PluginSet::iterator k = j->second.begin();
@@ -214,9 +225,12 @@
 
 //                                bool changed = currentState.present;
                                 bool changed = false;
+                                if (currentState.silentInput && !silentInput) {
+                                    changed = true;
+                                }
                                 Vamp::RealTime gap = rt - currentState.laststamp;
                                 m_pluginStates[pluginIndex][output] =
-                                    OutputState(false, changed, currentState.value, currentState.laststamp, currentState.gap);
+                                    OutputState(false, silentInput, changed, currentState.value, currentState.laststamp, currentState.gap);
                             }
                         }
 
@@ -248,9 +262,12 @@
                             if (fl.empty()) {
 //                                bool changed = currentState.present;
                                 bool changed = false;
+                                if (currentState.silentInput && !silentInput) {
+                                    changed = true;
+                                }
                                 Vamp::RealTime gap = rt - currentState.laststamp;
                                 m_pluginStates[pluginIndex][output] =
-                                    OutputState(false, changed, currentState.value, currentState.laststamp, currentState.gap);
+                                    OutputState(false, silentInput, changed, currentState.value, currentState.laststamp, currentState.gap);
                             } else {
 
                                 if (fl[0].hasTimestamp) {
@@ -266,13 +283,16 @@
                                       0.000001)
 //                                    )
                                     ;
+                                if (currentState.silentInput && !silentInput) {
+                                    changed = true;
+                                }
                                 if (changed) {
                                     std::cerr << "changed: " <<currentState.value << " -> " << value << std::endl;
                                 }
                                 Vamp::RealTime gap = rt - currentState.laststamp;
 //                                std::cerr << "gap = " << gap << std::endl;
                                 m_pluginStates[pluginIndex][output] =
-                                    OutputState(true, changed, value, rt, gap);
+                                    OutputState(true, silentInput, changed, value, rt, gap);
                             }
 
                             printFeatures(int(plugin), frame[reader], sr, output, fs);
@@ -463,6 +483,10 @@
 
             passed = false;
 
+            if (state.silentInput) {
+                break;
+            }
+
             if (state.changed) {
 //                std::cerr << "State changed with present = " << state.present << ", value = " << state.value << std::endl;
                 oneChanged = true;
--- a/host/Processor.h	Tue Dec 12 10:38:55 2006 +0000
+++ b/host/Processor.h	Tue Dec 12 12:34:03 2006 +0000
@@ -64,10 +64,11 @@
     class OutputState {
     public:
         OutputState() :
-            present(false), changed(false), value(0.f) { }
-        OutputState(bool p, bool c, float v, Vamp::RealTime s, Vamp::RealTime g) :
-            present(p), changed(c), value(v), laststamp(s), gap(g) { }
+            present(false), silentInput(true), changed(false), value(0.f) { }
+        OutputState(bool p, bool si, bool c, float v, Vamp::RealTime s, Vamp::RealTime g) :
+            present(p), silentInput(si), changed(c), value(v), laststamp(s), gap(g) { }
         bool present;
+        bool silentInput;
         bool changed;
         float value;
         Vamp::RealTime laststamp;