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/*
* 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