apply effects to both master output post-fader and headphones PFL

This required two major changes to the effects system:
1. Making effects track their internal state for each input
going to each output, instead of sharing a state only for each
input.
2. Splitting the single combined effects input/output buffer
into a separate input and output buffer.

TODO: fix signal path tests

1 files changed, 14 insertions, 5 deletions

diff --git a/src/effects/effectchainmanager.cpp b/src/effects/effectchainmanager.cpp
index 28becd2841..d6ab631039 100644
--- a/src/effects/effectchainmanager.cpp
+++ b/src/effects/effectchainmanager.cpp
@@ -18,19 +18,28 @@ EffectChainManager::~EffectChainManager() {
     //qDebug() << debugString() << "destroyed";
 }
 
-void EffectChainManager::registerChannel(const ChannelHandleAndGroup& handle_group) {
-    if (m_registeredChannels.contains(handle_group)) {
-        qWarning() << debugString() << "WARNING: Channel already registered:"
+void EffectChainManager::registerInputChannel(const ChannelHandleAndGroup& handle_group) {
+    if (m_registeredInputChannels.contains(handle_group)) {
+        qWarning() << debugString() << "WARNING: Input channel already registered:"
                    << handle_group.name();
         return;
     }
-    m_registeredChannels.insert(handle_group);
+    m_registeredInputChannels.insert(handle_group);
 
     foreach (StandardEffectRackPointer pRack, m_standardEffectRacks) {
-        pRack->registerChannel(handle_group);
+        pRack->registerInputChannel(handle_group);
     }
 }
 
+void EffectChainManager::registerOutputChannel(const ChannelHandleAndGroup& handle_group) {
+    if (m_registeredOutputChannels.contains(handle_group)) {
+        qWarning() << debugString() << "WARNING: Output channel already registered:"
+                   << handle_group.name();
+        return;
+    }
+    m_registeredOutputChannels.insert(handle_group);
+}
+
 StandardEffectRackPointer EffectChainManager::addStandardEffectRack() {
     StandardEffectRackPointer pRack(new StandardEffectRack(
         m_pEffectsManager, this, m_standardEffectRacks.size()));