1 files changed, 158 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/testsupport/y4m_frame_reader_unittest.cc b/third_party/libwebrtc/test/testsupport/y4m_frame_reader_unittest.cc
new file mode 100644
index 0000000000..df81a8135b
--- /dev/null
+++ b/third_party/libwebrtc/test/testsupport/y4m_frame_reader_unittest.cc
@@ -0,0 +1,158 @@
+/*
+ *  Copyright (c) 2018 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 <stdint.h>
+#include <stdio.h>
+
+#include <memory>
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "api/scoped_refptr.h"
+#include "api/video/i420_buffer.h"
+#include "api/video/video_frame_buffer.h"
+#include "test/gtest.h"
+#include "test/testsupport/file_utils.h"
+#include "test/testsupport/frame_reader.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+using Ratio = FrameReader::Ratio;
+using RepeatMode = YuvFrameReaderImpl::RepeatMode;
+
+constexpr Resolution kResolution({.width = 1, .height = 1});
+constexpr char kFileHeader[] = "YUV4MPEG2 W1 H1 F30:1 C420\n";
+constexpr char kFrameHeader[] = "FRAME\n";
+constexpr char kFrameContent[3][3] = {{0, 1, 2}, {1, 2, 3}, {2, 3, 4}};
+constexpr int kNumFrames = sizeof(kFrameContent) / sizeof(kFrameContent[0]);
+}  // namespace
+
+class Y4mFrameReaderTest : public ::testing::Test {
+ protected:
+  Y4mFrameReaderTest() = default;
+  ~Y4mFrameReaderTest() override = default;
+
+  void SetUp() override {
+    filepath_ = webrtc::test::TempFilename(webrtc::test::OutputPath(),
+                                           "y4m_frame_reader_unittest");
+    FILE* file = fopen(filepath_.c_str(), "wb");
+    fwrite(kFileHeader, 1, sizeof(kFileHeader) - 1, file);
+    for (int n = 0; n < kNumFrames; ++n) {
+      fwrite(kFrameHeader, 1, sizeof(kFrameHeader) - 1, file);
+      fwrite(kFrameContent[n], 1, sizeof(kFrameContent[n]), file);
+    }
+    fclose(file);
+
+    reader_ = CreateY4mFrameReader(filepath_);
+  }
+
+  void TearDown() override { remove(filepath_.c_str()); }
+
+  std::string filepath_;
+  std::unique_ptr<FrameReader> reader_;
+};
+
+TEST_F(Y4mFrameReaderTest, num_frames) {
+  EXPECT_EQ(kNumFrames, reader_->num_frames());
+}
+
+TEST_F(Y4mFrameReaderTest, PullFrame_frameResolution) {
+  rtc::scoped_refptr<I420BufferInterface> buffer = reader_->PullFrame();
+  EXPECT_EQ(kResolution.width, buffer->width());
+  EXPECT_EQ(kResolution.height, buffer->height());
+}
+
+TEST_F(Y4mFrameReaderTest, PullFrame_frameContent) {
+  rtc::scoped_refptr<I420BufferInterface> buffer = reader_->PullFrame();
+  EXPECT_EQ(kFrameContent[0][0], *buffer->DataY());
+  EXPECT_EQ(kFrameContent[0][1], *buffer->DataU());
+  EXPECT_EQ(kFrameContent[0][2], *buffer->DataV());
+}
+
+TEST_F(Y4mFrameReaderTest, ReadFrame_randomOrder) {
+  std::vector<int> expected_frames = {2, 0, 1};
+  std::vector<int> actual_frames;
+  for (int frame_num : expected_frames) {
+    rtc::scoped_refptr<I420BufferInterface> buffer =
+        reader_->ReadFrame(frame_num);
+    actual_frames.push_back(*buffer->DataY());
+  }
+  EXPECT_EQ(expected_frames, actual_frames);
+}
+
+TEST_F(Y4mFrameReaderTest, PullFrame_scale) {
+  rtc::scoped_refptr<I420BufferInterface> buffer = reader_->PullFrame(
+      /*pulled_frame_num=*/nullptr, Resolution({.width = 2, .height = 2}),
+      FrameReader::kNoScale);
+  EXPECT_EQ(2, buffer->width());
+  EXPECT_EQ(2, buffer->height());
+}
+
+class Y4mFrameReaderRepeatModeTest
+    : public Y4mFrameReaderTest,
+      public ::testing::WithParamInterface<
+          std::tuple<RepeatMode, std::vector<int>>> {};
+
+TEST_P(Y4mFrameReaderRepeatModeTest, PullFrame) {
+  RepeatMode mode = std::get<0>(GetParam());
+  std::vector<int> expected_frames = std::get<1>(GetParam());
+
+  reader_ = CreateY4mFrameReader(filepath_, mode);
+  std::vector<int> read_frames;
+  for (size_t i = 0; i < expected_frames.size(); ++i) {
+    rtc::scoped_refptr<I420BufferInterface> buffer = reader_->PullFrame();
+    read_frames.push_back(*buffer->DataY());
+  }
+  EXPECT_EQ(expected_frames, read_frames);
+}
+
+INSTANTIATE_TEST_SUITE_P(
+    Y4mFrameReaderTest,
+    Y4mFrameReaderRepeatModeTest,
+    ::testing::ValuesIn(
+        {std::make_tuple(RepeatMode::kSingle, std::vector<int>{0, 1, 2}),
+         std::make_tuple(RepeatMode::kRepeat,
+                         std::vector<int>{0, 1, 2, 0, 1, 2}),
+         std::make_tuple(RepeatMode::kPingPong,
+                         std::vector<int>{0, 1, 2, 1, 0, 1, 2})}));
+
+class Y4mFrameReaderFramerateScaleTest
+    : public Y4mFrameReaderTest,
+      public ::testing::WithParamInterface<
+          std::tuple<Ratio, std::vector<int>>> {};
+
+TEST_P(Y4mFrameReaderFramerateScaleTest, PullFrame) {
+  Ratio framerate_scale = std::get<0>(GetParam());
+  std::vector<int> expected_frames = std::get<1>(GetParam());
+
+  std::vector<int> actual_frames;
+  for (size_t i = 0; i < expected_frames.size(); ++i) {
+    int pulled_frame;
+    rtc::scoped_refptr<I420BufferInterface> buffer =
+        reader_->PullFrame(&pulled_frame, kResolution, framerate_scale);
+    actual_frames.push_back(pulled_frame);
+  }
+  EXPECT_EQ(expected_frames, actual_frames);
+}
+
+INSTANTIATE_TEST_SUITE_P(Y4mFrameReaderTest,
+                         Y4mFrameReaderFramerateScaleTest,
+                         ::testing::ValuesIn({
+                             std::make_tuple(Ratio({.num = 1, .den = 2}),
+                                             std::vector<int>{0, 2, 4}),
+                             std::make_tuple(Ratio({.num = 2, .den = 3}),
+                                             std::vector<int>{0, 1, 3, 4, 6}),
+                             std::make_tuple(Ratio({.num = 2, .den = 1}),
+                                             std::vector<int>{0, 0, 1, 1}),
+                         }));
+
+}  // namespace test
+}  // namespace webrtc