1 files changed, 91 insertions, 0 deletions
diff --git a/third_party/libwebrtc/pc/video_rtp_track_source.cc b/third_party/libwebrtc/pc/video_rtp_track_source.cc
new file mode 100644
index 0000000000..bcfcdcbdf9
--- /dev/null
+++ b/third_party/libwebrtc/pc/video_rtp_track_source.cc
@@ -0,0 +1,91 @@
+/*
+ *  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 "pc/video_rtp_track_source.h"
+
+#include <stddef.h>
+
+#include <algorithm>
+
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+
+VideoRtpTrackSource::VideoRtpTrackSource(Callback* callback)
+    : VideoTrackSource(true /* remote */), callback_(callback) {
+  worker_sequence_checker_.Detach();
+}
+
+void VideoRtpTrackSource::ClearCallback() {
+  RTC_DCHECK_RUN_ON(&worker_sequence_checker_);
+  callback_ = nullptr;
+}
+
+rtc::VideoSourceInterface<VideoFrame>* VideoRtpTrackSource::source() {
+  return &broadcaster_;
+}
+rtc::VideoSinkInterface<VideoFrame>* VideoRtpTrackSource::sink() {
+  return &broadcaster_;
+}
+
+void VideoRtpTrackSource::BroadcastRecordableEncodedFrame(
+    const RecordableEncodedFrame& frame) const {
+  MutexLock lock(&mu_);
+  for (rtc::VideoSinkInterface<RecordableEncodedFrame>* sink : encoded_sinks_) {
+    sink->OnFrame(frame);
+  }
+}
+
+bool VideoRtpTrackSource::SupportsEncodedOutput() const {
+  return true;
+}
+
+void VideoRtpTrackSource::GenerateKeyFrame() {
+  RTC_DCHECK_RUN_ON(&worker_sequence_checker_);
+  if (callback_) {
+    callback_->OnGenerateKeyFrame();
+  }
+}
+
+void VideoRtpTrackSource::AddEncodedSink(
+    rtc::VideoSinkInterface<RecordableEncodedFrame>* sink) {
+  RTC_DCHECK_RUN_ON(&worker_sequence_checker_);
+  RTC_DCHECK(sink);
+  size_t size = 0;
+  {
+    MutexLock lock(&mu_);
+    RTC_DCHECK(std::find(encoded_sinks_.begin(), encoded_sinks_.end(), sink) ==
+               encoded_sinks_.end());
+    encoded_sinks_.push_back(sink);
+    size = encoded_sinks_.size();
+  }
+  if (size == 1 && callback_) {
+    callback_->OnEncodedSinkEnabled(true);
+  }
+}
+
+void VideoRtpTrackSource::RemoveEncodedSink(
+    rtc::VideoSinkInterface<RecordableEncodedFrame>* sink) {
+  RTC_DCHECK_RUN_ON(&worker_sequence_checker_);
+  size_t size = 0;
+  {
+    MutexLock lock(&mu_);
+    auto it = std::find(encoded_sinks_.begin(), encoded_sinks_.end(), sink);
+    if (it != encoded_sinks_.end()) {
+      encoded_sinks_.erase(it);
+    }
+    size = encoded_sinks_.size();
+  }
+  if (size == 0 && callback_) {
+    callback_->OnEncodedSinkEnabled(false);
+  }
+}
+
+}  // namespace webrtc