modules/video_coding/h264_sps_pps_tracker_unittest.cc - src/webrtc - Git at Google

 /*
  *  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/h264_sps_pps_tracker.h"

 #include <vector>

 #include "webrtc/modules/video_coding/packet.h"
 #include "webrtc/test/gtest.h"
 #include "webrtc/common_video/h264/h264_common.h"

 namespace webrtc {
 namespace video_coding {

 namespace {
 const uint8_t start_code[] = {0, 0, 0, 1};
 }  // namespace

 class TestH264SpsPpsTracker : public ::testing::Test {
  public:
   VCMPacket GetDefaultPacket() {
     VCMPacket packet;
     packet.codec = kVideoCodecH264;
     packet.video_header.codecHeader.H264.nalus_length = 0;
     packet.video_header.is_first_packet_in_frame = false;
     packet.video_header.codecHeader.H264.packetization_type = kH264SingleNalu;

     return packet;
   }

   void AddSps(VCMPacket* packet, uint8_t sps_id, std::vector<uint8_t>* data) {
     NaluInfo info;
     info.type = H264::NaluType::kSps;
     info.sps_id = sps_id;
     info.pps_id = -1;
     data->push_back(H264::NaluType::kSps);
     data->push_back(sps_id);  // The sps data, just a single byte.

     packet->video_header.codecHeader.H264
         .nalus[packet->video_header.codecHeader.H264.nalus_length++] = info;
   }

   void AddPps(VCMPacket* packet,
               uint8_t sps_id,
               uint8_t pps_id,
               std::vector<uint8_t>* data) {
     NaluInfo info;
     info.type = H264::NaluType::kPps;
     info.sps_id = sps_id;
     info.pps_id = pps_id;
     data->push_back(H264::NaluType::kPps);
     data->push_back(pps_id);  // The pps data, just a single byte.

     packet->video_header.codecHeader.H264
         .nalus[packet->video_header.codecHeader.H264.nalus_length++] = info;
   }

   void AddIdr(VCMPacket* packet, int pps_id) {
     NaluInfo info;
     info.type = H264::NaluType::kIdr;
     info.sps_id = -1;
     info.pps_id = pps_id;

     packet->video_header.codecHeader.H264
         .nalus[packet->video_header.codecHeader.H264.nalus_length++] = info;
   }

  protected:
   H264SpsPpsTracker tracker_;
 };

 TEST_F(TestH264SpsPpsTracker, NoNalus) {
   uint8_t data[] = {1, 2, 3};
   VCMPacket packet = GetDefaultPacket();
   packet.video_header.codecHeader.H264.packetization_type = kH264FuA;
   packet.dataPtr = data;
   packet.sizeBytes = sizeof(data);

   EXPECT_EQ(H264SpsPpsTracker::kInsert, tracker_.CopyAndFixBitstream(&packet));
   EXPECT_EQ(memcmp(packet.dataPtr, data, sizeof(data)), 0);
   delete[] packet.dataPtr;
 }

 TEST_F(TestH264SpsPpsTracker, FuAFirstPacket) {
   uint8_t data[] = {1, 2, 3};
   VCMPacket packet = GetDefaultPacket();
   packet.video_header.codecHeader.H264.packetization_type = kH264FuA;
   packet.video_header.is_first_packet_in_frame = true;
   packet.dataPtr = data;
   packet.sizeBytes = sizeof(data);

   EXPECT_EQ(H264SpsPpsTracker::kInsert, tracker_.CopyAndFixBitstream(&packet));
   std::vector<uint8_t> expected;
   expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
   expected.insert(expected.end(), {1, 2, 3});
   EXPECT_EQ(memcmp(packet.dataPtr, expected.data(), expected.size()), 0);
   delete[] packet.dataPtr;
 }

 TEST_F(TestH264SpsPpsTracker, StapAIncorrectSegmentLength) {
   uint8_t data[] = {0, 0, 2, 0};
   VCMPacket packet = GetDefaultPacket();
   packet.video_header.codecHeader.H264.packetization_type = kH264StapA;
   packet.video_header.is_first_packet_in_frame = true;
   packet.dataPtr = data;
   packet.sizeBytes = sizeof(data);

   EXPECT_EQ(H264SpsPpsTracker::kDrop, tracker_.CopyAndFixBitstream(&packet));
 }

 TEST_F(TestH264SpsPpsTracker, NoNalusFirstPacket) {
   uint8_t data[] = {1, 2, 3};
   VCMPacket packet = GetDefaultPacket();
   packet.video_header.is_first_packet_in_frame = true;
   packet.dataPtr = data;
   packet.sizeBytes = sizeof(data);

   EXPECT_EQ(H264SpsPpsTracker::kInsert, tracker_.CopyAndFixBitstream(&packet));
   std::vector<uint8_t> expected;
   expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
   expected.insert(expected.end(), {1, 2, 3});
   EXPECT_EQ(memcmp(packet.dataPtr, expected.data(), expected.size()), 0);
   delete[] packet.dataPtr;
 }

 TEST_F(TestH264SpsPpsTracker, IdrNoSpsPpsInserted) {
   std::vector<uint8_t> data = {1, 2, 3};
   VCMPacket packet = GetDefaultPacket();
   packet.video_header.codecHeader.H264.packetization_type = kH264FuA;

   AddIdr(&packet, 0);
   packet.dataPtr = data.data();
   packet.sizeBytes = data.size();

   EXPECT_EQ(H264SpsPpsTracker::kInsert, tracker_.CopyAndFixBitstream(&packet));
   EXPECT_EQ(memcmp(packet.dataPtr, data.data(), data.size()), 0);
   delete[] packet.dataPtr;
 }

 TEST_F(TestH264SpsPpsTracker, IdrFirstPacketNoSpsPpsInserted) {
   std::vector<uint8_t> data = {1, 2, 3};
   VCMPacket packet = GetDefaultPacket();
   packet.video_header.is_first_packet_in_frame = true;

   AddIdr(&packet, 0);
   packet.dataPtr = data.data();
   packet.sizeBytes = data.size();

   EXPECT_EQ(H264SpsPpsTracker::kRequestKeyframe,
             tracker_.CopyAndFixBitstream(&packet));
 }

 TEST_F(TestH264SpsPpsTracker, IdrFirstPacketNoPpsInserted) {
   std::vector<uint8_t> data = {1, 2, 3};
   VCMPacket packet = GetDefaultPacket();
   packet.video_header.is_first_packet_in_frame = true;

   AddSps(&packet, 0, &data);
   AddIdr(&packet, 0);
   packet.dataPtr = data.data();
   packet.sizeBytes = data.size();

   EXPECT_EQ(H264SpsPpsTracker::kRequestKeyframe,
             tracker_.CopyAndFixBitstream(&packet));
 }

 TEST_F(TestH264SpsPpsTracker, IdrFirstPacketNoSpsInserted) {
   std::vector<uint8_t> data = {1, 2, 3};
   VCMPacket packet = GetDefaultPacket();
   packet.video_header.is_first_packet_in_frame = true;

   AddPps(&packet, 0, 0, &data);
   AddIdr(&packet, 0);
   packet.dataPtr = data.data();
   packet.sizeBytes = data.size();

   EXPECT_EQ(H264SpsPpsTracker::kRequestKeyframe,
             tracker_.CopyAndFixBitstream(&packet));
 }

 TEST_F(TestH264SpsPpsTracker, SpsPpsPacketThenIdrFirstPacket) {
   std::vector<uint8_t> data;
   VCMPacket sps_pps_packet = GetDefaultPacket();

   // Insert SPS/PPS
   AddSps(&sps_pps_packet, 0, &data);
   AddPps(&sps_pps_packet, 0, 1, &data);
   sps_pps_packet.dataPtr = data.data();
   sps_pps_packet.sizeBytes = data.size();
   EXPECT_EQ(H264SpsPpsTracker::kInsert,
             tracker_.CopyAndFixBitstream(&sps_pps_packet));
   delete[] sps_pps_packet.dataPtr;
   data.clear();

   // Insert first packet of the IDR
   VCMPacket idr_packet = GetDefaultPacket();
   idr_packet.video_header.is_first_packet_in_frame = true;
   AddIdr(&idr_packet, 1);
   data.insert(data.end(), {1, 2, 3});
   idr_packet.dataPtr = data.data();
   idr_packet.sizeBytes = data.size();
   EXPECT_EQ(H264SpsPpsTracker::kInsert,
             tracker_.CopyAndFixBitstream(&idr_packet));

   std::vector<uint8_t> expected;
   expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
   expected.insert(expected.end(), {1, 2, 3});
   EXPECT_EQ(memcmp(idr_packet.dataPtr, expected.data(), expected.size()), 0);
   delete[] idr_packet.dataPtr;
 }

 TEST_F(TestH264SpsPpsTracker, SpsPpsIdrInStapA) {
   std::vector<uint8_t> data;
   VCMPacket packet = GetDefaultPacket();
   packet.video_header.codecHeader.H264.packetization_type = kH264StapA;
   packet.video_header.is_first_packet_in_frame = true;  // Always true for StapA

   data.insert(data.end(), {0});     // First byte is ignored
   data.insert(data.end(), {0, 2});  // Length of segment
   AddSps(&packet, 13, &data);
   data.insert(data.end(), {0, 2});  // Length of segment
   AddPps(&packet, 13, 27, &data);
   data.insert(data.end(), {0, 5});  // Length of segment
   AddIdr(&packet, 27);
   data.insert(data.end(), {1, 2, 3, 2, 1});

   packet.dataPtr = data.data();
   packet.sizeBytes = data.size();
   EXPECT_EQ(H264SpsPpsTracker::kInsert, tracker_.CopyAndFixBitstream(&packet));

   std::vector<uint8_t> expected;
   expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
   expected.insert(expected.end(), {H264::NaluType::kSps, 13});
   expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
   expected.insert(expected.end(), {H264::NaluType::kPps, 27});
   expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
   expected.insert(expected.end(), {1, 2, 3, 2, 1});

   EXPECT_EQ(memcmp(packet.dataPtr, expected.data(), expected.size()), 0);
   delete[] packet.dataPtr;
 }

 TEST_F(TestH264SpsPpsTracker, SpsPpsOutOfBand) {
   constexpr uint8_t kData[] = {1, 2, 3};

   // Generated by "ffmpeg -r 30 -f avfoundation -i "default" out.h264" on macos.
   // width: 320, height: 240
   const std::vector<uint8_t> sps(
       {0x67, 0x7a, 0x00, 0x0d, 0xbc, 0xd9, 0x41, 0x41, 0xfa, 0x10, 0x00, 0x00,
        0x03, 0x00, 0x10, 0x00, 0x00, 0x03, 0x03, 0xc0, 0xf1, 0x42, 0x99, 0x60});
   const std::vector<uint8_t> pps({0x68, 0xeb, 0xe3, 0xcb, 0x22, 0xc0});
   tracker_.InsertSpsPpsNalus(sps, pps);

   // Insert first packet of the IDR.
   VCMPacket idr_packet = GetDefaultPacket();
   idr_packet.video_header.is_first_packet_in_frame = true;
   AddIdr(&idr_packet, 0);
   idr_packet.dataPtr = kData;
   idr_packet.sizeBytes = sizeof(kData);
   EXPECT_EQ(H264SpsPpsTracker::kInsert,
             tracker_.CopyAndFixBitstream(&idr_packet));
   EXPECT_EQ(320, idr_packet.width);
   EXPECT_EQ(240, idr_packet.height);
   if (idr_packet.dataPtr != kData) {
     // In case CopyAndFixBitStream() prepends SPS/PPS nalus to the packet, it
     // uses new uint8_t[] to allocate memory. Caller of CopyAndFixBitStream()
     // needs to take care of freeing the memory.
     delete[] idr_packet.dataPtr;
   }
 }

 TEST_F(TestH264SpsPpsTracker, SpsPpsOutOfBandWrongNaluHeader) {
   constexpr uint8_t kData[] = {1, 2, 3};

   // Generated by "ffmpeg -r 30 -f avfoundation -i "default" out.h264" on macos.
   // Nalu headers manupilated afterwards.
   const std::vector<uint8_t> sps(
       {0xff, 0x7a, 0x00, 0x0d, 0xbc, 0xd9, 0x41, 0x41, 0xfa, 0x10, 0x00, 0x00,
        0x03, 0x00, 0x10, 0x00, 0x00, 0x03, 0x03, 0xc0, 0xf1, 0x42, 0x99, 0x60});
   const std::vector<uint8_t> pps({0xff, 0xeb, 0xe3, 0xcb, 0x22, 0xc0});
   tracker_.InsertSpsPpsNalus(sps, pps);

   // Insert first packet of the IDR.
   VCMPacket idr_packet = GetDefaultPacket();
   idr_packet.video_header.is_first_packet_in_frame = true;
   AddIdr(&idr_packet, 0);
   idr_packet.dataPtr = kData;
   idr_packet.sizeBytes = sizeof(kData);
   EXPECT_EQ(H264SpsPpsTracker::kRequestKeyframe,
             tracker_.CopyAndFixBitstream(&idr_packet));
 }

 TEST_F(TestH264SpsPpsTracker, SpsPpsOutOfBandIncompleteNalu) {
   constexpr uint8_t kData[] = {1, 2, 3};

   // Generated by "ffmpeg -r 30 -f avfoundation -i "default" out.h264" on macos.
   // Nalus damaged afterwards.
   const std::vector<uint8_t> sps({0x67, 0x7a, 0x00, 0x0d, 0xbc, 0xd9});
   const std::vector<uint8_t> pps({0x68, 0xeb, 0xe3, 0xcb, 0x22, 0xc0});
   tracker_.InsertSpsPpsNalus(sps, pps);

   // Insert first packet of the IDR.
   VCMPacket idr_packet = GetDefaultPacket();
   idr_packet.video_header.is_first_packet_in_frame = true;
   AddIdr(&idr_packet, 0);
   idr_packet.dataPtr = kData;
   idr_packet.sizeBytes = sizeof(kData);
   EXPECT_EQ(H264SpsPpsTracker::kRequestKeyframe,
             tracker_.CopyAndFixBitstream(&idr_packet));
 }

 TEST_F(TestH264SpsPpsTracker, SaveRestoreWidthHeight) {
   std::vector<uint8_t> data;

   // Insert an SPS/PPS packet with width/height and make sure
   // that information is set on the first IDR packet.
   VCMPacket sps_pps_packet = GetDefaultPacket();
   AddSps(&sps_pps_packet, 0, &data);
   AddPps(&sps_pps_packet, 0, 1, &data);
   sps_pps_packet.dataPtr = data.data();
   sps_pps_packet.sizeBytes = data.size();
   sps_pps_packet.width = 320;
   sps_pps_packet.height = 240;
   EXPECT_EQ(H264SpsPpsTracker::kInsert,
             tracker_.CopyAndFixBitstream(&sps_pps_packet));
   delete[] sps_pps_packet.dataPtr;

   VCMPacket idr_packet = GetDefaultPacket();
   idr_packet.video_header.is_first_packet_in_frame = true;
   AddIdr(&idr_packet, 1);
   data.insert(data.end(), {1, 2, 3});
   idr_packet.dataPtr = data.data();
   idr_packet.sizeBytes = data.size();
   EXPECT_EQ(H264SpsPpsTracker::kInsert,
             tracker_.CopyAndFixBitstream(&idr_packet));

   EXPECT_EQ(320, idr_packet.width);
   EXPECT_EQ(240, idr_packet.height);
   delete[] idr_packet.dataPtr;
 }

 }  // namespace video_coding
 }  // namespace webrtc
	/*
	* 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/h264_sps_pps_tracker.h"

	#include <vector>

	#include "webrtc/modules/video_coding/packet.h"
	#include "webrtc/test/gtest.h"
	#include "webrtc/common_video/h264/h264_common.h"

	namespace webrtc {
	namespace video_coding {

	namespace {
	const uint8_t start_code[] = {0, 0, 0, 1};
	} // namespace

	class TestH264SpsPpsTracker : public ::testing::Test {
	public:
	VCMPacket GetDefaultPacket() {
	VCMPacket packet;
	packet.codec = kVideoCodecH264;
	packet.video_header.codecHeader.H264.nalus_length = 0;
	packet.video_header.is_first_packet_in_frame = false;
	packet.video_header.codecHeader.H264.packetization_type = kH264SingleNalu;

	return packet;
	}

	void AddSps(VCMPacket* packet, uint8_t sps_id, std::vector<uint8_t>* data) {
	NaluInfo info;
	info.type = H264::NaluType::kSps;
	info.sps_id = sps_id;
	info.pps_id = -1;
	data->push_back(H264::NaluType::kSps);
	data->push_back(sps_id); // The sps data, just a single byte.

	packet->video_header.codecHeader.H264
	.nalus[packet->video_header.codecHeader.H264.nalus_length++] = info;
	}

	void AddPps(VCMPacket* packet,
	uint8_t sps_id,
	uint8_t pps_id,
	std::vector<uint8_t>* data) {
	NaluInfo info;
	info.type = H264::NaluType::kPps;
	info.sps_id = sps_id;
	info.pps_id = pps_id;
	data->push_back(H264::NaluType::kPps);
	data->push_back(pps_id); // The pps data, just a single byte.

	packet->video_header.codecHeader.H264
	.nalus[packet->video_header.codecHeader.H264.nalus_length++] = info;
	}

	void AddIdr(VCMPacket* packet, int pps_id) {
	NaluInfo info;
	info.type = H264::NaluType::kIdr;
	info.sps_id = -1;
	info.pps_id = pps_id;

	packet->video_header.codecHeader.H264
	.nalus[packet->video_header.codecHeader.H264.nalus_length++] = info;
	}

	protected:
	H264SpsPpsTracker tracker_;
	};

	TEST_F(TestH264SpsPpsTracker, NoNalus) {
	uint8_t data[] = {1, 2, 3};
	VCMPacket packet = GetDefaultPacket();
	packet.video_header.codecHeader.H264.packetization_type = kH264FuA;
	packet.dataPtr = data;
	packet.sizeBytes = sizeof(data);

	EXPECT_EQ(H264SpsPpsTracker::kInsert, tracker_.CopyAndFixBitstream(&packet));
	EXPECT_EQ(memcmp(packet.dataPtr, data, sizeof(data)), 0);
	delete[] packet.dataPtr;
	}

	TEST_F(TestH264SpsPpsTracker, FuAFirstPacket) {
	uint8_t data[] = {1, 2, 3};
	VCMPacket packet = GetDefaultPacket();
	packet.video_header.codecHeader.H264.packetization_type = kH264FuA;
	packet.video_header.is_first_packet_in_frame = true;
	packet.dataPtr = data;
	packet.sizeBytes = sizeof(data);

	EXPECT_EQ(H264SpsPpsTracker::kInsert, tracker_.CopyAndFixBitstream(&packet));
	std::vector<uint8_t> expected;
	expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
	expected.insert(expected.end(), {1, 2, 3});
	EXPECT_EQ(memcmp(packet.dataPtr, expected.data(), expected.size()), 0);
	delete[] packet.dataPtr;
	}

	TEST_F(TestH264SpsPpsTracker, StapAIncorrectSegmentLength) {
	uint8_t data[] = {0, 0, 2, 0};
	VCMPacket packet = GetDefaultPacket();
	packet.video_header.codecHeader.H264.packetization_type = kH264StapA;
	packet.video_header.is_first_packet_in_frame = true;
	packet.dataPtr = data;
	packet.sizeBytes = sizeof(data);

	EXPECT_EQ(H264SpsPpsTracker::kDrop, tracker_.CopyAndFixBitstream(&packet));
	}

	TEST_F(TestH264SpsPpsTracker, NoNalusFirstPacket) {
	uint8_t data[] = {1, 2, 3};
	VCMPacket packet = GetDefaultPacket();
	packet.video_header.is_first_packet_in_frame = true;
	packet.dataPtr = data;
	packet.sizeBytes = sizeof(data);

	EXPECT_EQ(H264SpsPpsTracker::kInsert, tracker_.CopyAndFixBitstream(&packet));
	std::vector<uint8_t> expected;
	expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
	expected.insert(expected.end(), {1, 2, 3});
	EXPECT_EQ(memcmp(packet.dataPtr, expected.data(), expected.size()), 0);
	delete[] packet.dataPtr;
	}

	TEST_F(TestH264SpsPpsTracker, IdrNoSpsPpsInserted) {
	std::vector<uint8_t> data = {1, 2, 3};
	VCMPacket packet = GetDefaultPacket();
	packet.video_header.codecHeader.H264.packetization_type = kH264FuA;

	AddIdr(&packet, 0);
	packet.dataPtr = data.data();
	packet.sizeBytes = data.size();

	EXPECT_EQ(H264SpsPpsTracker::kInsert, tracker_.CopyAndFixBitstream(&packet));
	EXPECT_EQ(memcmp(packet.dataPtr, data.data(), data.size()), 0);
	delete[] packet.dataPtr;
	}

	TEST_F(TestH264SpsPpsTracker, IdrFirstPacketNoSpsPpsInserted) {
	std::vector<uint8_t> data = {1, 2, 3};
	VCMPacket packet = GetDefaultPacket();
	packet.video_header.is_first_packet_in_frame = true;

	AddIdr(&packet, 0);
	packet.dataPtr = data.data();
	packet.sizeBytes = data.size();

	EXPECT_EQ(H264SpsPpsTracker::kRequestKeyframe,
	tracker_.CopyAndFixBitstream(&packet));
	}

	TEST_F(TestH264SpsPpsTracker, IdrFirstPacketNoPpsInserted) {
	std::vector<uint8_t> data = {1, 2, 3};
	VCMPacket packet = GetDefaultPacket();
	packet.video_header.is_first_packet_in_frame = true;

	AddSps(&packet, 0, &data);
	AddIdr(&packet, 0);
	packet.dataPtr = data.data();
	packet.sizeBytes = data.size();

	EXPECT_EQ(H264SpsPpsTracker::kRequestKeyframe,
	tracker_.CopyAndFixBitstream(&packet));
	}

	TEST_F(TestH264SpsPpsTracker, IdrFirstPacketNoSpsInserted) {
	std::vector<uint8_t> data = {1, 2, 3};
	VCMPacket packet = GetDefaultPacket();
	packet.video_header.is_first_packet_in_frame = true;

	AddPps(&packet, 0, 0, &data);
	AddIdr(&packet, 0);
	packet.dataPtr = data.data();
	packet.sizeBytes = data.size();

	EXPECT_EQ(H264SpsPpsTracker::kRequestKeyframe,
	tracker_.CopyAndFixBitstream(&packet));
	}

	TEST_F(TestH264SpsPpsTracker, SpsPpsPacketThenIdrFirstPacket) {
	std::vector<uint8_t> data;
	VCMPacket sps_pps_packet = GetDefaultPacket();

	// Insert SPS/PPS
	AddSps(&sps_pps_packet, 0, &data);
	AddPps(&sps_pps_packet, 0, 1, &data);
	sps_pps_packet.dataPtr = data.data();
	sps_pps_packet.sizeBytes = data.size();
	EXPECT_EQ(H264SpsPpsTracker::kInsert,
	tracker_.CopyAndFixBitstream(&sps_pps_packet));
	delete[] sps_pps_packet.dataPtr;
	data.clear();

	// Insert first packet of the IDR
	VCMPacket idr_packet = GetDefaultPacket();
	idr_packet.video_header.is_first_packet_in_frame = true;
	AddIdr(&idr_packet, 1);
	data.insert(data.end(), {1, 2, 3});
	idr_packet.dataPtr = data.data();
	idr_packet.sizeBytes = data.size();
	EXPECT_EQ(H264SpsPpsTracker::kInsert,
	tracker_.CopyAndFixBitstream(&idr_packet));

	std::vector<uint8_t> expected;
	expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
	expected.insert(expected.end(), {1, 2, 3});
	EXPECT_EQ(memcmp(idr_packet.dataPtr, expected.data(), expected.size()), 0);
	delete[] idr_packet.dataPtr;
	}

	TEST_F(TestH264SpsPpsTracker, SpsPpsIdrInStapA) {
	std::vector<uint8_t> data;
	VCMPacket packet = GetDefaultPacket();
	packet.video_header.codecHeader.H264.packetization_type = kH264StapA;
	packet.video_header.is_first_packet_in_frame = true; // Always true for StapA

	data.insert(data.end(), {0}); // First byte is ignored
	data.insert(data.end(), {0, 2}); // Length of segment
	AddSps(&packet, 13, &data);
	data.insert(data.end(), {0, 2}); // Length of segment
	AddPps(&packet, 13, 27, &data);
	data.insert(data.end(), {0, 5}); // Length of segment
	AddIdr(&packet, 27);
	data.insert(data.end(), {1, 2, 3, 2, 1});

	packet.dataPtr = data.data();
	packet.sizeBytes = data.size();
	EXPECT_EQ(H264SpsPpsTracker::kInsert, tracker_.CopyAndFixBitstream(&packet));

	std::vector<uint8_t> expected;
	expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
	expected.insert(expected.end(), {H264::NaluType::kSps, 13});
	expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
	expected.insert(expected.end(), {H264::NaluType::kPps, 27});
	expected.insert(expected.end(), start_code, start_code + sizeof(start_code));
	expected.insert(expected.end(), {1, 2, 3, 2, 1});

	EXPECT_EQ(memcmp(packet.dataPtr, expected.data(), expected.size()), 0);
	delete[] packet.dataPtr;
	}

	TEST_F(TestH264SpsPpsTracker, SpsPpsOutOfBand) {
	constexpr uint8_t kData[] = {1, 2, 3};

	// Generated by "ffmpeg -r 30 -f avfoundation -i "default" out.h264" on macos.
	// width: 320, height: 240
	const std::vector<uint8_t> sps(
	{0x67, 0x7a, 0x00, 0x0d, 0xbc, 0xd9, 0x41, 0x41, 0xfa, 0x10, 0x00, 0x00,
	0x03, 0x00, 0x10, 0x00, 0x00, 0x03, 0x03, 0xc0, 0xf1, 0x42, 0x99, 0x60});
	const std::vector<uint8_t> pps({0x68, 0xeb, 0xe3, 0xcb, 0x22, 0xc0});
	tracker_.InsertSpsPpsNalus(sps, pps);

	// Insert first packet of the IDR.
	VCMPacket idr_packet = GetDefaultPacket();
	idr_packet.video_header.is_first_packet_in_frame = true;
	AddIdr(&idr_packet, 0);
	idr_packet.dataPtr = kData;
	idr_packet.sizeBytes = sizeof(kData);
	EXPECT_EQ(H264SpsPpsTracker::kInsert,
	tracker_.CopyAndFixBitstream(&idr_packet));
	EXPECT_EQ(320, idr_packet.width);
	EXPECT_EQ(240, idr_packet.height);
	if (idr_packet.dataPtr != kData) {
	// In case CopyAndFixBitStream() prepends SPS/PPS nalus to the packet, it
	// uses new uint8_t[] to allocate memory. Caller of CopyAndFixBitStream()
	// needs to take care of freeing the memory.
	delete[] idr_packet.dataPtr;
	}
	}

	TEST_F(TestH264SpsPpsTracker, SpsPpsOutOfBandWrongNaluHeader) {
	constexpr uint8_t kData[] = {1, 2, 3};

	// Generated by "ffmpeg -r 30 -f avfoundation -i "default" out.h264" on macos.
	// Nalu headers manupilated afterwards.
	const std::vector<uint8_t> sps(
	{0xff, 0x7a, 0x00, 0x0d, 0xbc, 0xd9, 0x41, 0x41, 0xfa, 0x10, 0x00, 0x00,
	0x03, 0x00, 0x10, 0x00, 0x00, 0x03, 0x03, 0xc0, 0xf1, 0x42, 0x99, 0x60});
	const std::vector<uint8_t> pps({0xff, 0xeb, 0xe3, 0xcb, 0x22, 0xc0});
	tracker_.InsertSpsPpsNalus(sps, pps);

	// Insert first packet of the IDR.
	VCMPacket idr_packet = GetDefaultPacket();
	idr_packet.video_header.is_first_packet_in_frame = true;
	AddIdr(&idr_packet, 0);
	idr_packet.dataPtr = kData;
	idr_packet.sizeBytes = sizeof(kData);
	EXPECT_EQ(H264SpsPpsTracker::kRequestKeyframe,
	tracker_.CopyAndFixBitstream(&idr_packet));
	}

	TEST_F(TestH264SpsPpsTracker, SpsPpsOutOfBandIncompleteNalu) {
	constexpr uint8_t kData[] = {1, 2, 3};

	// Generated by "ffmpeg -r 30 -f avfoundation -i "default" out.h264" on macos.
	// Nalus damaged afterwards.
	const std::vector<uint8_t> sps({0x67, 0x7a, 0x00, 0x0d, 0xbc, 0xd9});
	const std::vector<uint8_t> pps({0x68, 0xeb, 0xe3, 0xcb, 0x22, 0xc0});
	tracker_.InsertSpsPpsNalus(sps, pps);

	// Insert first packet of the IDR.
	VCMPacket idr_packet = GetDefaultPacket();
	idr_packet.video_header.is_first_packet_in_frame = true;
	AddIdr(&idr_packet, 0);
	idr_packet.dataPtr = kData;
	idr_packet.sizeBytes = sizeof(kData);
	EXPECT_EQ(H264SpsPpsTracker::kRequestKeyframe,
	tracker_.CopyAndFixBitstream(&idr_packet));
	}

	TEST_F(TestH264SpsPpsTracker, SaveRestoreWidthHeight) {
	std::vector<uint8_t> data;

	// Insert an SPS/PPS packet with width/height and make sure
	// that information is set on the first IDR packet.
	VCMPacket sps_pps_packet = GetDefaultPacket();
	AddSps(&sps_pps_packet, 0, &data);
	AddPps(&sps_pps_packet, 0, 1, &data);
	sps_pps_packet.dataPtr = data.data();
	sps_pps_packet.sizeBytes = data.size();
	sps_pps_packet.width = 320;
	sps_pps_packet.height = 240;
	EXPECT_EQ(H264SpsPpsTracker::kInsert,
	tracker_.CopyAndFixBitstream(&sps_pps_packet));
	delete[] sps_pps_packet.dataPtr;

	VCMPacket idr_packet = GetDefaultPacket();
	idr_packet.video_header.is_first_packet_in_frame = true;
	AddIdr(&idr_packet, 1);
	data.insert(data.end(), {1, 2, 3});
	idr_packet.dataPtr = data.data();
	idr_packet.sizeBytes = data.size();
	EXPECT_EQ(H264SpsPpsTracker::kInsert,
	tracker_.CopyAndFixBitstream(&idr_packet));

	EXPECT_EQ(320, idr_packet.width);
	EXPECT_EQ(240, idr_packet.height);
	delete[] idr_packet.dataPtr;
	}

	} // namespace video_coding
	} // namespace webrtc