Add WriteVideoToFile to video_file_reader.
The function checks the file extension to determine YUV or Y4M format.
Also adds a flag aligned_output_file to compare_videos.py, which allows
saving the aligned reference video to a file.
Bug: webrtc:9642
Change-Id: Ia59f5c123a1e41104756eb6b235b6581c4ffbd77
Reviewed-on: https://webrtc-review.googlesource.com/99503
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Commit-Queue: Paulina Hensman <phensman@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24787}diff --git a/rtc_tools/video_file_writer_unittest.cc b/rtc_tools/video_file_writer_unittest.cc
new file mode 100644
index 0000000..11b1c37
--- /dev/null
+++ b/rtc_tools/video_file_writer_unittest.cc
@@ -0,0 +1,123 @@
+/*
+ * 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 <string>
+
+#include "rtc_base/refcountedobject.h"
+#include "rtc_tools/video_file_reader.h"
+#include "rtc_tools/video_file_writer.h"
+#include "test/gtest.h"
+#include "test/testsupport/fileutils.h"
+
+namespace webrtc {
+namespace test {
+
+class VideoFileWriterTest : public ::testing::Test {
+ public:
+ void SetUp() override {
+ const std::string filename =
+ webrtc::test::OutputPath() + "test_video_file.y4m";
+
+ // Create simple test video of size 6x4.
+ FILE* file = fopen(filename.c_str(), "wb");
+ ASSERT_TRUE(file != nullptr);
+ fprintf(file, "YUV4MPEG2 W6 H4 F60:1 C420 dummyParam\n");
+ fprintf(file, "FRAME\n");
+
+ const int i420_size = width * height * 3 / 2;
+ // First frame.
+ for (int i = 0; i < i420_size; ++i)
+ fputc(static_cast<char>(i), file);
+ fprintf(file, "FRAME\n");
+ // Second frame.
+ for (int i = 0; i < i420_size; ++i)
+ fputc(static_cast<char>(i + i420_size), file);
+ fclose(file);
+
+ // Open the newly created file.
+ video = webrtc::test::OpenY4mFile(filename);
+ ASSERT_TRUE(video);
+ }
+
+ // Write and read Y4M file.
+ void WriteVideoY4m() {
+ const std::string filename =
+ webrtc::test::OutputPath() + "test_video_file2.y4m";
+ webrtc::test::WriteVideoToFile(video, filename, fps);
+ written_video = webrtc::test::OpenY4mFile(filename);
+ ASSERT_TRUE(written_video);
+ }
+
+ // Write and read YUV file.
+ void WriteVideoYuv() {
+ const std::string filename =
+ webrtc::test::OutputPath() + "test_video_file2.yuv";
+ webrtc::test::WriteVideoToFile(video, filename, fps);
+ written_video = webrtc::test::OpenYuvFile(filename, width, height);
+ ASSERT_TRUE(written_video);
+ }
+
+ const int width = 6;
+ const int height = 4;
+ const int fps = 60;
+ rtc::scoped_refptr<webrtc::test::Video> video;
+ rtc::scoped_refptr<webrtc::test::Video> written_video;
+};
+
+TEST_F(VideoFileWriterTest, TestParsingFileHeaderY4m) {
+ WriteVideoY4m();
+ EXPECT_EQ(video->width(), written_video->width());
+ EXPECT_EQ(video->height(), written_video->height());
+}
+
+TEST_F(VideoFileWriterTest, TestParsingFileHeaderYuv) {
+ WriteVideoYuv();
+ EXPECT_EQ(video->width(), written_video->width());
+ EXPECT_EQ(video->height(), written_video->height());
+}
+
+TEST_F(VideoFileWriterTest, TestParsingNumberOfFramesY4m) {
+ WriteVideoY4m();
+ EXPECT_EQ(video->number_of_frames(), written_video->number_of_frames());
+}
+
+TEST_F(VideoFileWriterTest, TestParsingNumberOfFramesYuv) {
+ WriteVideoYuv();
+ EXPECT_EQ(video->number_of_frames(), written_video->number_of_frames());
+}
+
+TEST_F(VideoFileWriterTest, TestPixelContentY4m) {
+ WriteVideoY4m();
+ int cnt = 0;
+ for (const rtc::scoped_refptr<I420BufferInterface> frame : *written_video) {
+ for (int i = 0; i < width * height; ++i, ++cnt)
+ EXPECT_EQ(cnt, frame->DataY()[i]);
+ for (int i = 0; i < width / 2 * height / 2; ++i, ++cnt)
+ EXPECT_EQ(cnt, frame->DataU()[i]);
+ for (int i = 0; i < width / 2 * height / 2; ++i, ++cnt)
+ EXPECT_EQ(cnt, frame->DataV()[i]);
+ }
+}
+
+TEST_F(VideoFileWriterTest, TestPixelContentYuv) {
+ WriteVideoYuv();
+ int cnt = 0;
+ for (const rtc::scoped_refptr<I420BufferInterface> frame : *written_video) {
+ for (int i = 0; i < width * height; ++i, ++cnt)
+ EXPECT_EQ(cnt, frame->DataY()[i]);
+ for (int i = 0; i < width / 2 * height / 2; ++i, ++cnt)
+ EXPECT_EQ(cnt, frame->DataU()[i]);
+ for (int i = 0; i < width / 2 * height / 2; ++i, ++cnt)
+ EXPECT_EQ(cnt, frame->DataV()[i]);
+ }
+}
+
+} // namespace test
+} // namespace webrtc