Optmize mute process (#770)

Author: qwu16

source/core/owt_base/AudioFrameConstructor.cpp

@@ -101,6 +101,10 @@ std::unique_ptr<AudioLevel> parseAudioLevel(std::shared_ptr<erizo::DataPacket> p
 
 int AudioFrameConstructor::deliverAudioData_(std::shared_ptr<erizo::DataPacket> audio_packet)
 {
+    if (!m_enabled) {
+        return 0;
+    }
+
     if (audio_packet->length <= 0)
         return 0;
 
@@ -131,9 +135,8 @@ int AudioFrameConstructor::deliverAudioData_(std::shared_ptr<erizo::DataPacket>
         ELOG_DEBUG("No audio level extension");
     }
 
-    if (m_enabled) {
-        deliverFrame(frame);
-    }
+    deliverFrame(frame);
+
     return audio_packet->length;
 }
 

source/core/owt_base/VideoFrameConstructor.cpp

@@ -92,7 +92,13 @@ void VideoFrameConstructor::unbindTransport()
 void VideoFrameConstructor::enable(bool enabled)
 {
     m_enabled = enabled;
-    RequestKeyFrame();
+    if(!m_enabled) {
+        m_ssrc = 0;
+        m_rtcAdapter->destoryVideoReceiver(m_videoReceive);
+        m_videoReceive = nullptr;
+    } else {
+        RequestKeyFrame();
+    }
 }
 
 int32_t VideoFrameConstructor::RequestKeyFrame()
@@ -143,6 +149,10 @@ void VideoFrameConstructor::onAdapterData(char* data, int len)
 
 int VideoFrameConstructor::deliverVideoData_(std::shared_ptr<erizo::DataPacket> video_packet)
 {
+    if (!m_enabled) {
+        return 0;
+    }
+
     RTCPHeader* chead = reinterpret_cast<RTCPHeader*>(video_packet->data);
     uint8_t packetType = chead->getPacketType();