Fix keyword spotting. (#1689)

Reset the stream right after detecting a keyword

scripts/dotnet/KeywordSpotter.cs

@@ -46,6 +46,11 @@ namespace SherpaOnnx
             Decode(_handle.Handle, stream.Handle);
         }
 
+        public void Reset(OnlineStream stream)
+        {
+            Reset(_handle.Handle, stream.Handle);
+        }
+
         // The caller should ensure all passed streams are ready for decoding.
         public void Decode(IEnumerable<OnlineStream> streams)
         {
@@ -110,6 +115,9 @@ namespace SherpaOnnx
         [DllImport(Dll.Filename, EntryPoint = "SherpaOnnxDecodeKeywordStream")]
         private static extern void Decode(IntPtr handle, IntPtr stream);
 
+        [DllImport(Dll.Filename, EntryPoint = "SherpaOnnxResetKeywordStream")]
+        private static extern void Reset(IntPtr handle, IntPtr stream);
+
         [DllImport(Dll.Filename, EntryPoint = "SherpaOnnxDecodeMultipleKeywordStreams")]
         private static extern void Decode(IntPtr handle, IntPtr[] streams, int n);
 

scripts/go/sherpa_onnx.go

@@ -1584,6 +1584,11 @@ func (spotter *KeywordSpotter) Decode(s *OnlineStream) {
 	C.SherpaOnnxDecodeKeywordStream(spotter.impl, s.impl)
 }
 
+// You MUST call it right after detecting a keyword
+func (spotter *KeywordSpotter) Reset(s *OnlineStream) {
+	C.SherpaOnnxResetKeywordStream(spotter.impl, s.impl)
+}
+
 // Get the current result of stream since the last invoke of Reset()
 func (spotter *KeywordSpotter) GetResult(s *OnlineStream) *KeywordSpotterResult {
 	p := C.SherpaOnnxGetKeywordResult(spotter.impl, s.impl)

scripts/node-addon-api/lib/keyword-spotter.js

@@ -20,6 +20,10 @@ class KeywordSpotter {
     addon.decodeKeywordStream(this.handle, stream.handle);
   }
 
+  reset(stream) {
+    addon.resetKeywordStream(this.handle, stream.handle);
+  }
+
   getResult(stream) {
     const jsonStr = addon.getKeywordResultAsJson(this.handle, stream.handle);