Android improvements. (#20)

Start/Stop receiving stream method for VideoTrack (#25)

Properly remove observer upon deconstruction (#26)

feat: Expose setCodecPreferences/getCapabilities for android. (#61)

fix: add WrappedVideoDecoderFactory.java. (#74)

Exposing Adapter types in PeerConnectionFactory (#78)

Co-authored-by: davidliu <[email protected]>
Co-authored-by: Mohamed Risaldar UT <[email protected]>
(cherry picked from commit e91f003)

# Conflicts:
#	media/base/media_channel.h
#	media/engine/webrtc_video_engine.cc
#	media/engine/webrtc_video_engine.h

Author: kanat

api/media_stream_interface.cc

@@ -23,6 +23,10 @@ bool VideoTrackInterface::should_receive() const {
   return true;
 }
 
+bool VideoTrackInterface::should_receive() const {
+  return true;
+}
+
 VideoTrackInterface::ContentHint VideoTrackInterface::content_hint() const {
   return ContentHint::kNone;
 }

media/engine/webrtc_video_engine.cc

@@ -2779,6 +2779,24 @@ WebRtcVideoReceiveChannel::~WebRtcVideoReceiveChannel() {
     delete kv.second;
 }
 
+void WebRtcVideoReceiveChannel::StartReceive(uint32_t ssrc) {
+  RTC_DCHECK_RUN_ON(&thread_checker_);
+  WebRtcVideoReceiveStream* stream = FindReceiveStream(ssrc);
+  if(!stream) {
+    return;
+  }
+  stream->StartStream();
+}
+
+void WebRtcVideoReceiveChannel::StopReceive(uint32_t ssrc) {
+  RTC_DCHECK_RUN_ON(&thread_checker_);
+  WebRtcVideoReceiveStream* stream = FindReceiveStream(ssrc);
+  if(!stream) {
+    return;
+  }
+  stream->StopStream();
+}
+
 void WebRtcVideoReceiveChannel::SetReceiverFeedbackParameters(
     bool lntf_enabled,
     bool nack_enabled,

media/engine/webrtc_video_engine.h

@@ -286,7 +286,6 @@ class WebRtcVideoSendChannel : public MediaChannelUtil,
     }
     return send_codec()->rtx_time;
   }
-
  private:
   struct ChangedSenderParameters {
     // These optionals are unset if not changed.
@@ -719,6 +718,9 @@ class WebRtcVideoReceiveChannel : public MediaChannelUtil,
     void SetDepacketizerToDecoderFrameTransformer(
         scoped_refptr<FrameTransformerInterface> frame_transformer);
 
+    void StartStream();
+    void StopStream();
+
     void SetLocalSsrc(uint32_t local_ssrc);
     void UpdateRtxSsrc(uint32_t ssrc);
     void StartReceiveStream();

pc/video_rtp_receiver.h

@@ -65,6 +65,9 @@ class VideoRtpReceiver : public RtpReceiverInternal,
   // ObserverInterface implementation
   void OnChanged() override;
 
+  // ObserverInterface implementation
+  void OnChanged() override;
+
   // RtpReceiverInterface implementation
   scoped_refptr<MediaStreamTrackInterface> track() const override {
     return track_;

sdk/android/src/jni/video_track.cc

@@ -57,5 +57,16 @@ static jboolean JNI_VideoTrack_GetShouldReceive(JNIEnv* jni,
   return reinterpret_cast<VideoTrackInterface*>(j_native_track)->should_receive();
 }
 
+static void JNI_VideoTrack_SetShouldReceive(JNIEnv* jni,
+                                      jlong j_native_track,
+                                      jboolean should_receive) {
+  reinterpret_cast<VideoTrackInterface*>(j_native_track)->set_should_receive(should_receive);
+}
+
+static jboolean JNI_VideoTrack_GetShouldReceive(JNIEnv* jni,
+                                      jlong j_native_track) {
+  return reinterpret_cast<VideoTrackInterface*>(j_native_track)->should_receive();
+}
+
 }  // namespace jni
 }  // namespace webrtc