text: /*
   *  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_reader.h"
  
  #include <stdint.h>
  #include <string>
  
  #include "test/gtest.h"
  #include "test/testsupport/fileutils.h"
  
  namespace webrtc {
  namespace test {
  
  class Y4mFileReaderTest : public ::testing::Test {
   public:
    void SetUp() override {
      const std::string filename =
          TempFilename(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 F57:10 C420 dummyParam\n");
      fprintf(file, "FRAME\n");
  
      const int width = 6;
      const int height = 4;
      const int i40_size = width * height * 3 / 2;
      // First frame.
      for (int i = 0; i < i40_size; ++i)
        fputc(static_cast<char>(i), file);
      fprintf(file, "FRAME\n");
      // Second frame.
      for (int i = 0; i < i40_size; ++i)
        fputc(static_cast<char>(i + i40_size), file);
      fclose(file);
  
      // Open the newly created file.
      video = webrtc::test::OpenY4mFile(filename);
      ASSERT_TRUE(video);
    }
  
    rtc::scoped_refptr<webrtc::test::Video> video;
  };
  
  TEST_F(Y4mFileReaderTest, TestParsingFileHeader) {
    EXPECT_EQ(6, video->width());
    EXPECT_EQ(4, video->height());
  }
  
  TEST_F(Y4mFileReaderTest, TestParsingNumberOfFrames) {
    EXPECT_EQ(2u, video->number_of_frames());
  }
  
  TEST_F(Y4mFileReaderTest, TestPixelContent) {
    int cnt = 0;
    for (const rtc::scoped_refptr<I420BufferInterface> frame : *video) {
      for (int i = 0; i < 6 * 4; ++i, ++cnt)
        EXPECT_EQ(cnt, frame->DataY()[i]);
      for (int i = 0; i < 3 * 2; ++i, ++cnt)
        EXPECT_EQ(cnt, frame->DataU()[i]);
      for (int i = 0; i < 3 * 2; ++i, ++cnt)
        EXPECT_EQ(cnt, frame->DataV()[i]);
    }
  }
  
  class YuvFileReaderTest : public ::testing::Test {
   public:
    void SetUp() override {
      const std::string filename =
          TempFilename(webrtc::test::OutputPath(), "test_video_file.yuv");
  
      // Create simple test video of size 6x4.
      FILE* file = fopen(filename.c_str(), "wb");
      ASSERT_TRUE(file != nullptr);
  
      const int width = 6;
      const int height = 4;
      const int i40_size = width * height * 3 / 2;
      // First frame.
      for (int i = 0; i < i40_size; ++i)
        fputc(static_cast<char>(i), file);
      // Second frame.
      for (int i = 0; i < i40_size; ++i)
        fputc(static_cast<char>(i + i40_size), file);
      fclose(file);
  
      // Open the newly created file.
      video = webrtc::test::OpenYuvFile(filename, 6, 4);
      ASSERT_TRUE(video);
    }
  
    rtc::scoped_refptr<webrtc::test::Video> video;
  };
  
  TEST_F(YuvFileReaderTest, TestParsingFileHeader) {
    EXPECT_EQ(6, video->width());
    EXPECT_EQ(4, video->height());
  }
  
  TEST_F(YuvFileReaderTest, TestParsingNumberOfFrames) {
    EXPECT_EQ(2u, video->number_of_frames());
  }
  
  TEST_F(YuvFileReaderTest, TestPixelContent) {
    int cnt = 0;
    for (const rtc::scoped_refptr<I420BufferInterface> frame : *video) {
      for (int i = 0; i < 6 * 4; ++i, ++cnt)
        EXPECT_EQ(cnt, frame->DataY()[i]);
      for (int i = 0; i < 3 * 2; ++i, ++cnt)
        EXPECT_EQ(cnt, frame->DataU()[i]);
      for (int i = 0; i < 3 * 2; ++i, ++cnt)
        EXPECT_EQ(cnt, frame->DataV()[i]);
    }
  }
  
  }  // namespace test
  }  // namespace webrtc
  