ruby : Add #free method, check MemoryView strictly (#4032)

* Bump version to 1.3.9

* Fix JFKReader's format

* Add Whisper::Context#free

* Add test for Whisper::Context#free

* Add Whisper::Context#free to RBS

* Add Whisper::VAD::Context#free

* Add test for Whisper::VAD::Context#free

* Add Whisper::VAD::Context#free to RBS

* Add Parakeet::Context#free

* Add test for Parakeet::Context#free

* Add Parakeet::Context#free to RBS

* Check MemoryView format more strictly

* Fallback MemoryView flags to SIMPLE when MemoryView not available

* Add changelog entries

* Update document on callbacks

* Remove whitespace

Co-authored-by: Daniel Bevenius <daniel.bevenius@gmail.com>

---------

Co-authored-by: Daniel Bevenius <daniel.bevenius@gmail.com>

bindings/ruby/test/jfk_reader/jfk_reader.c

@@ -69,7 +69,7 @@ jfk_reader_get_memory_view(const VALUE obj, rb_memory_view_t *view, int flags)
   view->data = (void *)args.data;
   view->byte_size = sizeof(float) * n_samples;
   view->readonly = true;
-  view->format = "f";
+  view->format = "e";
   view->item_size = sizeof(float);
   view->item_desc.components = NULL;
   view->item_desc.length = 0;

bindings/ruby/test/test_parakeet_context.rb

@@ -113,4 +113,11 @@ class TestParakeetContext < TestBase
       @parakeet.transcribe "nothing", @params
     end
   end
+
+  def test_free
+    @parakeet.free
+    assert_raise RuntimeError do
+      @parakeet.transcribe AUDIO, @params
+    end
+  end
 end

bindings/ruby/test/test_vad_context.rb

@@ -25,6 +25,14 @@ class TestVADContext < TestBase
     end
   end
 
+  def test_free
+    vad = Whisper::VAD::Context.new("silero-v6.2.0")
+    vad.free
+    assert_raise RuntimeError do
+      vad.detect(AUDIO, Whisper::VAD::Params.new)
+    end
+  end
+
   private
 
   def assert_segments(segments)

bindings/ruby/test/test_whisper.rb

@@ -50,6 +50,15 @@ class TestWhisper < TestBase
     end
   end
 
+  def test_free
+    whisper = Whisper::Context.new("base.en")
+    whisper.free
+
+    assert_raise RuntimeError do
+      whisper.model_type
+    end
+  end
+
   private
 
   def without_log_callback