1 files changed, 118 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/pc/e2e/analyzer/video/video_dumping.cc b/third_party/libwebrtc/test/pc/e2e/analyzer/video/video_dumping.cc
new file mode 100644
index 0000000000..4fec0a8f9e
--- /dev/null
+++ b/third_party/libwebrtc/test/pc/e2e/analyzer/video/video_dumping.cc
@@ -0,0 +1,118 @@
+/*
+ *  Copyright (c) 2022 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/pc/e2e/analyzer/video/video_dumping.h"
+
+#include <stdio.h>
+
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/strings/string_view.h"
+#include "api/test/video/video_frame_writer.h"
+#include "api/video/video_frame.h"
+#include "rtc_base/logging.h"
+#include "system_wrappers/include/clock.h"
+#include "test/testsupport/video_frame_writer.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+namespace {
+
+class VideoFrameIdsWriter final : public test::VideoFrameWriter {
+ public:
+  explicit VideoFrameIdsWriter(absl::string_view file_name)
+      : file_name_(file_name) {
+    output_file_ = fopen(file_name_.c_str(), "wb");
+    RTC_LOG(LS_INFO) << "Writing VideoFrame IDs into " << file_name_;
+    RTC_CHECK(output_file_ != nullptr)
+        << "Failed to open file to dump frame ids for writing: " << file_name_;
+  }
+  ~VideoFrameIdsWriter() override { Close(); }
+
+  bool WriteFrame(const VideoFrame& frame) override {
+    RTC_CHECK(output_file_ != nullptr) << "Writer is already closed";
+    int chars_written = fprintf(output_file_, "%d\n", frame.id());
+    if (chars_written < 2) {
+      RTC_LOG(LS_ERROR) << "Failed to write frame id to the output file: "
+                        << file_name_;
+      return false;
+    }
+    return true;
+  }
+
+  void Close() override {
+    if (output_file_ != nullptr) {
+      RTC_LOG(LS_INFO) << "Closing file for VideoFrame IDs: " << file_name_;
+      fclose(output_file_);
+      output_file_ = nullptr;
+    }
+  }
+
+ private:
+  const std::string file_name_;
+  FILE* output_file_;
+};
+
+// Broadcast received frame to multiple underlying frame writers.
+class BroadcastingFrameWriter final : public test::VideoFrameWriter {
+ public:
+  explicit BroadcastingFrameWriter(
+      std::vector<std::unique_ptr<test::VideoFrameWriter>> delegates)
+      : delegates_(std::move(delegates)) {}
+  ~BroadcastingFrameWriter() override { Close(); }
+
+  bool WriteFrame(const webrtc::VideoFrame& frame) override {
+    for (auto& delegate : delegates_) {
+      if (!delegate->WriteFrame(frame)) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  void Close() override {
+    for (auto& delegate : delegates_) {
+      delegate->Close();
+    }
+  }
+
+ private:
+  std::vector<std::unique_ptr<test::VideoFrameWriter>> delegates_;
+};
+
+}  // namespace
+
+VideoWriter::VideoWriter(test::VideoFrameWriter* video_writer,
+                         int sampling_modulo)
+    : video_writer_(video_writer), sampling_modulo_(sampling_modulo) {}
+
+void VideoWriter::OnFrame(const VideoFrame& frame) {
+  if (frames_counter_++ % sampling_modulo_ != 0) {
+    return;
+  }
+  bool result = video_writer_->WriteFrame(frame);
+  RTC_CHECK(result) << "Failed to write frame";
+}
+
+std::unique_ptr<test::VideoFrameWriter> CreateVideoFrameWithIdsWriter(
+    std::unique_ptr<test::VideoFrameWriter> video_writer_delegate,
+    absl::string_view frame_ids_dump_file_name) {
+  std::vector<std::unique_ptr<test::VideoFrameWriter>> requested_writers;
+  requested_writers.push_back(std::move(video_writer_delegate));
+  requested_writers.push_back(
+      std::make_unique<VideoFrameIdsWriter>(frame_ids_dump_file_name));
+  return std::make_unique<BroadcastingFrameWriter>(
+      std::move(requested_writers));
+}
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc