1 files changed, 111 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/testsupport/video_frame_writer.cc b/third_party/libwebrtc/test/testsupport/video_frame_writer.cc
new file mode 100644
index 0000000000..c36ebdeed7
--- /dev/null
+++ b/third_party/libwebrtc/test/testsupport/video_frame_writer.cc
@@ -0,0 +1,111 @@
+/*
+ *  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/testsupport/video_frame_writer.h"
+
+#include <cmath>
+#include <cstdlib>
+#include <limits>
+#include <memory>
+#include <utility>
+
+#include "api/scoped_refptr.h"
+#include "api/video/i420_buffer.h"
+#include "common_video/libyuv/include/webrtc_libyuv.h"
+#include "rtc_base/logging.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+rtc::Buffer ExtractI420BufferWithSize(const VideoFrame& frame,
+                                      int width,
+                                      int height) {
+  if (frame.width() != width || frame.height() != height) {
+    RTC_CHECK_LE(std::abs(static_cast<double>(width) / height -
+                          static_cast<double>(frame.width()) / frame.height()),
+                 2 * std::numeric_limits<double>::epsilon());
+    // Same aspect ratio, no cropping needed.
+    rtc::scoped_refptr<I420Buffer> scaled(I420Buffer::Create(width, height));
+    scaled->ScaleFrom(*frame.video_frame_buffer()->ToI420());
+
+    size_t length =
+        CalcBufferSize(VideoType::kI420, scaled->width(), scaled->height());
+    rtc::Buffer buffer(length);
+    RTC_CHECK_NE(ExtractBuffer(scaled, length, buffer.data()), -1);
+    return buffer;
+  }
+
+  // No resize.
+  size_t length =
+      CalcBufferSize(VideoType::kI420, frame.width(), frame.height());
+  rtc::Buffer buffer(length);
+  RTC_CHECK_NE(ExtractBuffer(frame, length, buffer.data()), -1);
+  return buffer;
+}
+
+}  // namespace
+
+Y4mVideoFrameWriterImpl::Y4mVideoFrameWriterImpl(std::string output_file_name,
+                                                 int width,
+                                                 int height,
+                                                 int fps)
+    // We will move string here to prevent extra copy. We won't use const ref
+    // to not corrupt caller variable with move and don't assume that caller's
+    // variable won't be destructed before writer.
+    : width_(width),
+      height_(height),
+      frame_writer_(
+          std::make_unique<Y4mFrameWriterImpl>(std::move(output_file_name),
+                                               width_,
+                                               height_,
+                                               fps)) {
+  // Init underlying frame writer and ensure that it is operational.
+  RTC_CHECK(frame_writer_->Init());
+}
+
+bool Y4mVideoFrameWriterImpl::WriteFrame(const webrtc::VideoFrame& frame) {
+  rtc::Buffer frame_buffer = ExtractI420BufferWithSize(frame, width_, height_);
+  RTC_CHECK_EQ(frame_buffer.size(), frame_writer_->FrameLength());
+  return frame_writer_->WriteFrame(frame_buffer.data());
+}
+
+void Y4mVideoFrameWriterImpl::Close() {
+  frame_writer_->Close();
+}
+
+YuvVideoFrameWriterImpl::YuvVideoFrameWriterImpl(std::string output_file_name,
+                                                 int width,
+                                                 int height)
+    // We will move string here to prevent extra copy. We won't use const ref
+    // to not corrupt caller variable with move and don't assume that caller's
+    // variable won't be destructed before writer.
+    : width_(width),
+      height_(height),
+      frame_writer_(
+          std::make_unique<YuvFrameWriterImpl>(std::move(output_file_name),
+                                               width_,
+                                               height_)) {
+  // Init underlying frame writer and ensure that it is operational.
+  RTC_CHECK(frame_writer_->Init());
+}
+
+bool YuvVideoFrameWriterImpl::WriteFrame(const webrtc::VideoFrame& frame) {
+  rtc::Buffer frame_buffer = ExtractI420BufferWithSize(frame, width_, height_);
+  RTC_CHECK_EQ(frame_buffer.size(), frame_writer_->FrameLength());
+  return frame_writer_->WriteFrame(frame_buffer.data());
+}
+
+void YuvVideoFrameWriterImpl::Close() {
+  frame_writer_->Close();
+}
+
+}  // namespace test
+}  // namespace webrtc