Remove per-track mono option, as it seems somewhat useless now that we have a mix mono button in the monitor section.

git-svn-id: svn://localhost/ardour2/branches/3.0@8675 d708f5d6-7413-0410-9779-e7cbd77b26cf

2 files changed, 4 insertions, 40 deletions

diff --git a/libs/ardour/ardour/panner.h b/libs/ardour/ardour/panner.h
index b989dca41d..5e0ed991d6 100644
--- a/libs/ardour/ardour/panner.h
+++ b/libs/ardour/ardour/panner.h
@@ -83,9 +83,6 @@ class Panner : public PBD::Stateful, public PBD::ScopedConnectionList
 	virtual bool bypassed() const { return _bypassed; }
 	virtual void set_bypassed (bool yn);
 
-	virtual bool is_mono () const { return _mono; }
-	virtual void set_mono (bool);
-
 	void      set_automation_state (AutoState);
 	AutoState automation_state() const;
 	void      set_automation_style (AutoStyle);
@@ -128,8 +125,7 @@ class Panner : public PBD::Stateful, public PBD::ScopedConnectionList
 	 *  @param nframes Number of frames in the input.
          *
          *  Derived panners can choose to implement these if they need to gain more control over the panning algorithm.
-         *  the default is to (1) check if _mono is true, and if so, just deliver .. (2) otherwise, call
-         *  distribute_one() or distribute_one_automated() on each input buffer to deliver it to each output 
+         *  the default is to call distribute_one() or distribute_one_automated() on each input buffer to deliver it to each output 
          *  buffer.
          * 
          *  If a panner does not need to override this default behaviour, it can just implement
@@ -141,7 +137,7 @@ class Panner : public PBD::Stateful, public PBD::ScopedConnectionList
                                            pan_t** buffers);
 
 	PBD::Signal0<void> Changed;      /* for positional info */
-	PBD::Signal0<void> StateChanged; /* for mute, mono */
+	PBD::Signal0<void> StateChanged; /* for mute */
 
 	int set_state (const XMLNode&, int version);
 	virtual XMLNode& state (bool full_state) = 0;
@@ -162,7 +158,6 @@ class Panner : public PBD::Stateful, public PBD::ScopedConnectionList
 
   protected:
         boost::shared_ptr<Pannable> _pannable;
-        bool        _mono;
         bool        _bypassed;
 
 	XMLNode& get_state ();
diff --git a/libs/ardour/panner.cc b/libs/ardour/panner.cc
index 1cb5e310aa..c94f668c85 100644
--- a/libs/ardour/panner.cc
+++ b/libs/ardour/panner.cc
@@ -29,7 +29,6 @@ using namespace ARDOUR;
 
 Panner::Panner (boost::shared_ptr<Pannable> p)
 	: _pannable (p)
-        , _mono (0)
 {
 }
 
@@ -46,25 +45,12 @@ Panner::set_bypassed (bool yn)
 	}
 }
 
-void
-Panner::set_mono (bool yn)
-{
-	if (yn != _mono) {
-		_mono = yn;
-		StateChanged ();
-	}
-}
-
 int
 Panner::set_state (const XMLNode& node, int version)
 {
 	const XMLProperty* prop;
 	XMLNodeConstIterator iter;
 
-	if ((prop = node.property (X_("mono")))) {
-		set_mono (string_is_affirmative (prop->value()));
-	}
-
 	if ((prop = node.property (X_("bypassed"))) != 0) {
 		set_bypassed (string_is_affirmative (prop->value()));
 	}
@@ -77,7 +63,6 @@ Panner::get_state ()
 {
         XMLNode* node = new XMLNode (X_("Panner"));
 
-	node->add_property (X_("mono"), (_mono ? "yes" : "no"));
 	node->add_property (X_("bypassed"), (bypassed() ? "yes" : "no"));
 
         return *node;
@@ -89,15 +74,7 @@ Panner::distribute (BufferSet& ibufs, BufferSet& obufs, gain_t gain_coeff, pfram
         uint32_t which = 0;
 
 	for (BufferSet::audio_iterator src = ibufs.audio_begin(); src != ibufs.audio_end(); ++src, ++which) {
-                if (_mono) {
-                        /* we're in mono mode, so just pan the input to all outputs equally (XXX should we scale?) */
-                        for (BufferSet::audio_iterator o = obufs.audio_begin(); o != obufs.audio_end(); ++o) {
-                                mix_buffers_with_gain ((*o).data(), (*src).data(), nframes, gain_coeff);
-                        }
-                } else {
-                        /* normal mode, call the `real' distribute method */
-                        distribute_one (*src, obufs, gain_coeff, nframes, which);
-                }
+		distribute_one (*src, obufs, gain_coeff, nframes, which);
         }
 }
 
@@ -108,15 +85,7 @@ Panner::distribute_automated (BufferSet& ibufs, BufferSet& obufs,
         uint32_t which = 0;
 
 	for (BufferSet::audio_iterator src = ibufs.audio_begin(); src != ibufs.audio_end(); ++src, ++which) {
-                if (_mono) {
-                        /* we're in mono mode, so just pan the input to all outputs equally (XXX should we scale?) */
-                        for (BufferSet::audio_iterator o = obufs.audio_begin(); o != obufs.audio_end(); ++o) {
-                                mix_buffers_with_gain ((*o).data(), (*src).data(), nframes, 1.0);
-                        }
-                } else {
-                        /* normal mode, call the `real' distribute method */
-                        distribute_one_automated (*src, obufs, start, end, nframes, buffers, which);
-                }
+		distribute_one_automated (*src, obufs, start, end, nframes, buffers, which);
         }
 }