1 files changed, 61 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/frame_forwarder.cc b/third_party/libwebrtc/test/frame_forwarder.cc
new file mode 100644
index 0000000000..e89f753bd3
--- /dev/null
+++ b/third_party/libwebrtc/test/frame_forwarder.cc
@@ -0,0 +1,61 @@
+/*
+ *  Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+#include "test/frame_forwarder.h"
+
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+namespace test {
+
+FrameForwarder::FrameForwarder() : sink_(nullptr) {}
+FrameForwarder::~FrameForwarder() {}
+
+void FrameForwarder::IncomingCapturedFrame(const VideoFrame& video_frame) {
+  MutexLock lock(&mutex_);
+  if (sink_)
+    sink_->OnFrame(video_frame);
+}
+
+void FrameForwarder::AddOrUpdateSink(rtc::VideoSinkInterface<VideoFrame>* sink,
+                                     const rtc::VideoSinkWants& wants) {
+  MutexLock lock(&mutex_);
+  AddOrUpdateSinkLocked(sink, wants);
+}
+
+void FrameForwarder::AddOrUpdateSinkLocked(
+    rtc::VideoSinkInterface<VideoFrame>* sink,
+    const rtc::VideoSinkWants& wants) {
+  RTC_DCHECK(!sink_ || sink_ == sink);
+  sink_ = sink;
+  sink_wants_ = wants;
+}
+
+void FrameForwarder::RemoveSink(rtc::VideoSinkInterface<VideoFrame>* sink) {
+  MutexLock lock(&mutex_);
+  RTC_DCHECK_EQ(sink, sink_);
+  sink_ = nullptr;
+}
+
+rtc::VideoSinkWants FrameForwarder::sink_wants() const {
+  MutexLock lock(&mutex_);
+  return sink_wants_;
+}
+
+rtc::VideoSinkWants FrameForwarder::sink_wants_locked() const {
+  return sink_wants_;
+}
+
+bool FrameForwarder::has_sinks() const {
+  MutexLock lock(&mutex_);
+  return sink_ != nullptr;
+}
+
+}  // namespace test
+}  // namespace webrtc