Add support for writing raw encoder output to .ivf files.

webrtc/modules/video_coding/utility/ivf_file_writer_unittest.cc

Index: webrtc/modules/video_coding/utility/ivf_file_writer_unittest.cc
diff --git a/webrtc/modules/video_coding/utility/ivf_file_writer_unittest.cc b/webrtc/modules/video_coding/utility/ivf_file_writer_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e7e4242fb26a687faa1dfc285b0ef1ef5ba8d33a
--- /dev/null
+++ b/webrtc/modules/video_coding/utility/ivf_file_writer_unittest.cc
@@ -0,0 +1,174 @@
+/*
+ *  Copyright (c) 2016 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 "webrtc/modules/video_coding/utility/ivf_file_writer.h"
+
+#include <memory>
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "webrtc/base/logging.h"
+#include "webrtc/modules/rtp_rtcp/source/byte_io.h"
+#include "webrtc/system_wrappers/include/tick_util.h"
+
+namespace webrtc {
+
+namespace {
+static const int kHeaderSize = 32;
+static const int kFrameHeaderSize = 12;
+static uint8_t dummy_payload[4] = {0, 1, 2, 3};
+}  // namespace
+
+class IvfFileWriterTest : public ::testing::Test {
+ protected:
+  void SetUp() override {
+    const int64_t start_id =
+        reinterpret_cast<int64_t>(this) ^ TickTime::MicrosecondTimestamp();
+    int64_t id = start_id;
+    do {
+      std::ostringstream oss;
+      oss << "ivf_test_file_" << id++ << ".ivf";
+      file_name_ = oss.str();
+    } while (id < start_id + 100 && FileExists());
+  }
+
+  bool WriteDummyTestFrames(int width,
+                            int height,
+                            int num_frames,
+                            bool use_capture_tims_ms) {
+    EncodedImage frame;
+    frame._buffer = dummy_payload;
+    frame._encodedWidth = width;
+    frame._encodedHeight = height;
+    for (int i = 1; i <= num_frames; ++i) {
+      frame._length = i % sizeof(dummy_payload);
+      if (use_capture_tims_ms) {
+        frame.capture_time_ms_ = i;
+      } else {
+        frame._timeStamp = i;
+      }
+      if (!file_writer_->WriteFrame(frame))
+        return false;
+    }
+    return true;
+  }
+
+  void VerifyIvfHeader(FileWrapper* file,
+                       const uint8_t fourcc[4],
+                       int width,
+                       int height,
+                       uint32_t num_frames,
+                       bool use_capture_tims_ms) {
+    uint8_t data[kHeaderSize];
+    ASSERT_EQ(kHeaderSize, file->Read(data, kHeaderSize));
+
+    uint8_t dkif[4] = {'D', 'K', 'I', 'F'};
+    EXPECT_EQ(0, memcmp(dkif, data, 4));
+    EXPECT_EQ(0u, ByteReader<uint16_t>::ReadLittleEndian(&data[4]));
+    EXPECT_EQ(32u, ByteReader<uint16_t>::ReadLittleEndian(&data[6]));
+    EXPECT_EQ(0, memcmp(fourcc, &data[8], 4));
+    EXPECT_EQ(width, ByteReader<uint16_t>::ReadLittleEndian(&data[12]));
+    EXPECT_EQ(height, ByteReader<uint16_t>::ReadLittleEndian(&data[14]));
+    EXPECT_EQ(use_capture_tims_ms ? 1000u : 90000u,
+              ByteReader<uint32_t>::ReadLittleEndian(&data[16]));
+    EXPECT_EQ(1u, ByteReader<uint32_t>::ReadLittleEndian(&data[20]));
+    EXPECT_EQ(num_frames, ByteReader<uint32_t>::ReadLittleEndian(&data[24]));
+    EXPECT_EQ(0u, ByteReader<uint32_t>::ReadLittleEndian(&data[28]));
+  }
+
+  void VerifyDummyTestFrames(FileWrapper* file, uint32_t num_frames) {
+    const int kMaxFrameSize = 4;
+    for (uint32_t i = 1; i <= num_frames; ++i) {
+      uint8_t frame_header[kFrameHeaderSize];
+      ASSERT_EQ(kFrameHeaderSize, file->Read(frame_header, kFrameHeaderSize));
+      uint32_t frame_length =
+          ByteReader<uint32_t>::ReadLittleEndian(&frame_header[0]);
+      EXPECT_EQ(i % 4, frame_length);
+      uint64_t timestamp =
+          ByteReader<uint64_t>::ReadLittleEndian(&frame_header[4]);
+      EXPECT_EQ(i, timestamp);
+
+      uint8_t data[kMaxFrameSize] = {};
+      ASSERT_EQ(frame_length,
+                static_cast<uint32_t>(file->Read(data, frame_length)));
+      EXPECT_EQ(0, memcmp(data, dummy_payload, frame_length));
+    }
+  }
+
+  void RunBasicFileStructureTest(RtpVideoCodecTypes codec_type,
+                                 const uint8_t fourcc[4],
+                                 bool use_capture_tims_ms) {
+    file_writer_ = IvfFileWriter::Open(file_name_, codec_type);
+    ASSERT_TRUE(file_writer_.get());
+    const int kWidth = 320;
+    const int kHeight = 240;
+    const int kNumFrames = 257;
+    EXPECT_TRUE(
+        WriteDummyTestFrames(kWidth, kHeight, kNumFrames, use_capture_tims_ms));
+    EXPECT_TRUE(file_writer_->Close());
+
+    std::unique_ptr<FileWrapper> out_file(FileWrapper::Create());
+    ASSERT_EQ(0, out_file->OpenFile(file_name_.c_str(), true));
+    VerifyIvfHeader(out_file.get(), fourcc, kWidth, kHeight, kNumFrames,
+                    use_capture_tims_ms);
+    VerifyDummyTestFrames(out_file.get(), kNumFrames);
+
+    EXPECT_EQ(0, out_file->CloseFile());
+    EXPECT_EQ(0, remove(file_name_.c_str()));
+  }
+
+  bool FileExists() {
+    std::unique_ptr<FileWrapper> file_wrapper(FileWrapper::Create());
+    return file_wrapper->OpenFile(file_name_.c_str(), true) == 0;
+  }
+
+  std::string file_name_;
+  std::unique_ptr<IvfFileWriter> file_writer_;
+};
+
+TEST_F(IvfFileWriterTest, RemovesUnusedFile) {
+  file_writer_ = IvfFileWriter::Open(file_name_, kRtpVideoVp8);
+  ASSERT_TRUE(file_writer_.get() != nullptr);
+  EXPECT_TRUE(FileExists());
+  EXPECT_TRUE(file_writer_->Close());
+  EXPECT_FALSE(FileExists());
+  EXPECT_FALSE(file_writer_->Close());  // Can't close twice.
+}
+
+TEST_F(IvfFileWriterTest, WritesBasicVP8FileNtpTimestamp) {
+  const uint8_t fourcc[4] = {'V', 'P', '8', '0'};
+  RunBasicFileStructureTest(kRtpVideoVp8, fourcc, false);
+}
+
+TEST_F(IvfFileWriterTest, WritesBasicVP8FileMsTimestamp) {
+  const uint8_t fourcc[4] = {'V', 'P', '8', '0'};
+  RunBasicFileStructureTest(kRtpVideoVp8, fourcc, true);
+}
+
+TEST_F(IvfFileWriterTest, WritesBasicVP9FileNtpTimestamp) {
+  const uint8_t fourcc[4] = {'V', 'P', '9', '0'};
+  RunBasicFileStructureTest(kRtpVideoVp9, fourcc, false);
+}
+
+TEST_F(IvfFileWriterTest, WritesBasicVP9FileMsTimestamp) {
+  const uint8_t fourcc[4] = {'V', 'P', '9', '0'};
+  RunBasicFileStructureTest(kRtpVideoVp9, fourcc, true);
+}
+
+TEST_F(IvfFileWriterTest, WritesBasicH264FileNtpTimestamp) {
+  const uint8_t fourcc[4] = {'H', '2', '6', '4'};
+  RunBasicFileStructureTest(kRtpVideoH264, fourcc, false);
+}
+
+TEST_F(IvfFileWriterTest, WritesBasicH264FileMsTimestamp) {
+  const uint8_t fourcc[4] = {'H', '2', '6', '4'};
+  RunBasicFileStructureTest(kRtpVideoH264, fourcc, true);
+}
+
+}  // namespace webrtc