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/*
* 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 "rtc_tools/video_file_writer.h"
#include <stdint.h>
#include <cstdio>
#include <string>
#include "api/video/video_frame_buffer.h"
#include "rtc_tools/video_file_reader.h"
#include "test/gtest.h"
#include "test/testsupport/file_utils.h"
namespace webrtc {
namespace test {
class VideoFileWriterTest : public ::testing::Test {
public:
void SetUp() override {
video_filename_ =
TempFilename(webrtc::test::OutputPath(), "test_video_file.y4m");
// Create simple test video of size 6x4.
FILE* file = fopen(video_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(video_filename_);
ASSERT_TRUE(video_);
ASSERT_EQ(video_->number_of_frames(), 2u);
}
void TearDown() override {
if (!video_filename_.empty()) {
RemoveFile(video_filename_);
}
if (!written_video_filename_.empty()) {
RemoveFile(written_video_filename_);
}
}
// Write and read Y4M file.
void WriteVideoY4m() {
// Cleanup existing file if any.
if (!written_video_filename_.empty()) {
RemoveFile(written_video_filename_);
}
// Create an unique filename, e.g. test_video_file2.y4mZapata.
written_video_filename_ =
TempFilename(webrtc::test::OutputPath(), "test_video_file2.y4m");
webrtc::test::WriteY4mVideoToFile(video_, written_video_filename_, fps);
written_video_ = webrtc::test::OpenY4mFile(written_video_filename_);
ASSERT_TRUE(written_video_);
}
// Write and read YUV file.
void WriteVideoYuv() {
// Cleanup existing file if any.
if (!written_video_filename_.empty()) {
RemoveFile(written_video_filename_);
}
// Create an unique filename, e.g. test_video_file2.yuvZapata.
written_video_filename_ =
TempFilename(webrtc::test::OutputPath(), "test_video_file2.yuv");
webrtc::test::WriteYuvVideoToFile(video_, written_video_filename_, fps);
written_video_ =
webrtc::test::OpenYuvFile(written_video_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_;
// Each video object must be backed by file!
std::string video_filename_;
std::string written_video_filename_;
};
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
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