tick: use an espilon for very slow speed instead of == 0.

Author: jcelerier

src/ossia/dataflow/execution_state.cpp

@@ -519,7 +519,8 @@ ossia::net::node_base* exec_state_facade::find_node(std::string_view name) const
 auto exec_state_facade::timings(const token_request& t) const noexcept -> sample_timings
 {
   sample_timings tm;
-  if(t.speed > 0.)
+  static constexpr double speed_epsilon = 0.01;
+  if(t.speed > speed_epsilon)
   {
     [[likely]];
     tm.start_sample = t.physical_start(impl->modelToSamplesRatio);
@@ -531,13 +532,7 @@ auto exec_state_facade::timings(const token_request& t) const noexcept -> sample
 
     tm.length = std::min(tick_dur, max_dur);
   }
-  else if(t.speed == 0.)
-  {
-    tm.start_sample = 0;
-    tm.length = 0;
-    return tm;
-  }
-  else
+  else if(t.speed < -speed_epsilon)
   {
     tm.start_sample = -t.physical_start(impl->modelToSamplesRatio);
 
@@ -548,29 +543,38 @@ auto exec_state_facade::timings(const token_request& t) const noexcept -> sample
 
     tm.length = std::min(tick_dur, max_dur);
   }
-
+  else
+  {
+    tm.start_sample = 0;
+    tm.length = 0;
+    return tm;
+  }
   if(tm.start_sample < 0)
   {
     [[unlikely]];
-    assert(false);
+    ossia::logger().error("tm.start_sample < 0: {}", tm.start_sample);
     return {};
   }
   if(tm.start_sample >= impl->bufferSize)
   {
     [[unlikely]];
-    assert(false);
+    ossia::logger().error(
+        "tm.start_sample >= impl->bufferSize: {} >= {}", tm.start_sample,
+        impl->bufferSize);
     return {};
   }
   if(tm.length < 0)
   {
     [[unlikely]];
-    assert(false);
+    ossia::logger().error("tm.length < 0: {}", tm.length);
     return {};
   }
   if(tm.start_sample + tm.length > impl->bufferSize)
   {
     [[unlikely]];
-    assert(false);
+    ossia::logger().error(
+        "tm.start_sample + tm.length > impl->bufferSize: {} + {} > {}", tm.start_sample,
+        tm.length, impl->bufferSize);
     return {};
   }
   return tm;

src/ossia/dataflow/nodes/timestretch/rubberband_stretcher.hpp

@@ -84,7 +84,7 @@ struct rubberband_stretcher
       int64_t samples_to_read, const int64_t samples_to_write,
       const int64_t samples_offset, const ossia::mutable_audio_span<double>& ap) noexcept
   {
-    const double abs_tempo_ratio = std::abs(tempo_ratio);
+    const double abs_tempo_ratio = std::min(70., std::abs(tempo_ratio));
     if(abs_tempo_ratio != m_rubberBand->getTimeRatio())
     {
       m_rubberBand->setTimeRatio(abs_tempo_ratio);