[EGD-5086] Fix voice not starting when calling

Due to a race condition between source and sink voice is not always
starting when calling. Introduce audio stream connections to avoid
race condition and improve handling of audio start and stop operations.

Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>

module-audio/Audio/decoder/Decoder.cpp

@@ -121,10 +121,11 @@ namespace audio
         memcpy(pcm, &workerBuffer[0], samplecount * 2 * sizeof(int16_t));
     }
 
-    void Decoder::startDecodingWorker(Stream &audioStream, DecoderWorker::EndOfFileCallback endOfFileCallback)
+    void Decoder::startDecodingWorker(DecoderWorker::EndOfFileCallback endOfFileCallback)
     {
+        assert(_stream != nullptr);
         if (!audioWorker) {
-            audioWorker = std::make_unique<DecoderWorker>(audioStream, this, endOfFileCallback);
+            audioWorker = std::make_unique<DecoderWorker>(_stream, this, endOfFileCallback);
             audioWorker->init();
             audioWorker->run();
         }
@@ -141,4 +142,19 @@ namespace audio
         audioWorker = nullptr;
     }
 
+    void Decoder::onDataReceive()
+    {
+        audioWorker->enablePlayback();
+    }
+
+    void Decoder::enableInput()
+    {
+        audioWorker->enablePlayback();
+    }
+
+    void Decoder::disableInput()
+    {
+        audioWorker->disablePlayback();
+    }
+
 } // namespace audio