add xrun counter API to session

[ardour.git] / libs / ardour / delivery.cc

diff --git a/libs/ardour/delivery.cc b/libs/ardour/delivery.cc
index f16719888f9ff738ecab707fb738fd66b2313ff9..359b029d0c0213fcd98239708af98ef40581cae6 100644 (file)
--- a/libs/ardour/delivery.cc
+++ b/libs/ardour/delivery.cc
@@ -52,7 +52,7 @@ Delivery::Delivery (Session& s, boost::shared_ptr<IO> io, boost::shared_ptr<Pann
        : IOProcessor(s, boost::shared_ptr<IO>(), (role_requires_output_ports (r) ? io : boost::shared_ptr<IO>()), name)
        , _role (r)
        , _output_buffers (new BufferSet())
-       , _current_gain (1.0)
+       , _current_gain (GAIN_COEFF_UNITY)
        , _no_outs_cuz_we_no_monitor (false)
        , _mute_master (mm)
        , _no_panner_reset (false)
@@ -76,7 +76,7 @@ Delivery::Delivery (Session& s, boost::shared_ptr<Pannable> pannable, boost::sha
        : IOProcessor(s, false, (role_requires_output_ports (r) ? true : false), name, "", DataType::AUDIO, (r == Send))
        , _role (r)
        , _output_buffers (new BufferSet())
-       , _current_gain (1.0)
+       , _current_gain (GAIN_COEFF_UNITY)
        , _no_outs_cuz_we_no_monitor (false)
        , _mute_master (mm)
        , _no_panner_reset (false)
@@ -264,7 +264,7 @@ Delivery::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pf
 
                _current_gain = Amp::apply_gain (bufs, _session.nominal_frame_rate(), nframes, _current_gain, tgain);
 
-       } else if (tgain == 0.0) {
+       } else if (tgain < GAIN_COEFF_SMALL) {
 
                /* we were quiet last time, and we're still supposed to be quiet.
                   Silence the outputs, and make sure the buffers are quiet too,
@@ -273,11 +273,11 @@ Delivery::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pf
                _output->silence (nframes);
                if (result_required) {
                        bufs.set_count (output_buffers().count ());
-                       Amp::apply_simple_gain (bufs, nframes, 0.0);
+                       Amp::apply_simple_gain (bufs, nframes, GAIN_COEFF_ZERO);
                }
                goto out;
 
-       } else if (tgain != 1.0) {
+       } else if (tgain != GAIN_COEFF_UNITY) {
 
                /* target gain has not changed, but is not unity */
                Amp::apply_simple_gain (bufs, nframes, tgain);
@@ -498,7 +498,7 @@ Delivery::target_gain ()
        /* if we've been requested to deactivate, our target gain is zero */
 
        if (!_pending_active) {
-               return 0.0;
+               return GAIN_COEFF_ZERO;
        }
 
        /* if we've been told not to output because its a monitoring situation and
@@ -506,7 +506,7 @@ Delivery::target_gain ()
        */
 
        if (_no_outs_cuz_we_no_monitor) {
-               return 0.0;
+               return GAIN_COEFF_ZERO;
        }
 
         MuteMaster::MutePoint mp = MuteMaster::Main; // stupid gcc uninit warning
@@ -538,7 +538,7 @@ Delivery::target_gain ()
                    it gets its signal from the master out.
                 */
 
-                desired_gain = 0.0;
+                desired_gain = GAIN_COEFF_ZERO;
 
         }