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/*
* Copyright (c) 2013 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 "api/test/mock_video_decoder.h"
#include "api/video_codecs/video_decoder.h"
#include "modules/video_coding/include/video_coding.h"
#include "modules/video_coding/timing/timing.h"
#include "modules/video_coding/video_coding_impl.h"
#include "system_wrappers/include/clock.h"
#include "test/gtest.h"
#include "test/scoped_key_value_config.h"
using ::testing::_;
using ::testing::AnyNumber;
using ::testing::NiceMock;
namespace webrtc {
namespace vcm {
namespace {
class MockPacketRequestCallback : public VCMPacketRequestCallback {
public:
MOCK_METHOD(int32_t,
ResendPackets,
(const uint16_t* sequenceNumbers, uint16_t length),
(override));
};
class MockVCMReceiveCallback : public VCMReceiveCallback {
public:
MockVCMReceiveCallback() {}
virtual ~MockVCMReceiveCallback() {}
MOCK_METHOD(int32_t,
FrameToRender,
(VideoFrame&,
absl::optional<uint8_t>,
TimeDelta,
VideoContentType,
VideoFrameType),
(override));
MOCK_METHOD(void, OnIncomingPayloadType, (int), (override));
MOCK_METHOD(void,
OnDecoderInfoChanged,
(const VideoDecoder::DecoderInfo&),
(override));
};
class TestVideoReceiver : public ::testing::Test {
protected:
static const int kUnusedPayloadType = 10;
static const uint16_t kMaxWaitTimeMs = 100;
TestVideoReceiver()
: clock_(0),
timing_(&clock_, field_trials_),
receiver_(&clock_, &timing_, field_trials_) {}
virtual void SetUp() {
// Register decoder.
receiver_.RegisterExternalDecoder(&decoder_, kUnusedPayloadType);
VideoDecoder::Settings settings;
settings.set_codec_type(kVideoCodecVP8);
receiver_.RegisterReceiveCodec(kUnusedPayloadType, settings);
// Set protection mode.
const size_t kMaxNackListSize = 250;
const int kMaxPacketAgeToNack = 450;
receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack, 0);
EXPECT_EQ(
0, receiver_.RegisterPacketRequestCallback(&packet_request_callback_));
// Since we call Decode, we need to provide a valid receive callback.
// However, for the purposes of these tests, we ignore the callbacks.
EXPECT_CALL(receive_callback_, OnIncomingPayloadType(_)).Times(AnyNumber());
EXPECT_CALL(receive_callback_, OnDecoderInfoChanged).Times(AnyNumber());
receiver_.RegisterReceiveCallback(&receive_callback_);
}
RTPHeader GetDefaultRTPHeader() const {
RTPHeader header;
header.markerBit = false;
header.payloadType = kUnusedPayloadType;
header.ssrc = 1;
header.headerLength = 12;
return header;
}
RTPVideoHeader GetDefaultVp8Header() const {
RTPVideoHeader video_header = {};
video_header.frame_type = VideoFrameType::kEmptyFrame;
video_header.codec = kVideoCodecVP8;
return video_header;
}
void InsertAndVerifyPaddingFrame(const uint8_t* payload,
RTPHeader* header,
const RTPVideoHeader& video_header) {
for (int j = 0; j < 5; ++j) {
// Padding only packets are passed to the VCM with payload size 0.
EXPECT_EQ(0, receiver_.IncomingPacket(payload, 0, *header, video_header));
++header->sequenceNumber;
}
receiver_.Process();
EXPECT_CALL(decoder_, Decode(_, _)).Times(0);
EXPECT_EQ(VCM_FRAME_NOT_READY, receiver_.Decode(kMaxWaitTimeMs));
}
void InsertAndVerifyDecodableFrame(const uint8_t* payload,
size_t length,
RTPHeader* header,
const RTPVideoHeader& video_header) {
EXPECT_EQ(0,
receiver_.IncomingPacket(payload, length, *header, video_header));
++header->sequenceNumber;
EXPECT_CALL(packet_request_callback_, ResendPackets(_, _)).Times(0);
receiver_.Process();
EXPECT_CALL(decoder_, Decode(_, _)).Times(1);
EXPECT_EQ(0, receiver_.Decode(kMaxWaitTimeMs));
}
test::ScopedKeyValueConfig field_trials_;
SimulatedClock clock_;
NiceMock<MockVideoDecoder> decoder_;
NiceMock<MockPacketRequestCallback> packet_request_callback_;
VCMTiming timing_;
MockVCMReceiveCallback receive_callback_;
VideoReceiver receiver_;
};
TEST_F(TestVideoReceiver, PaddingOnlyFrames) {
const size_t kPaddingSize = 220;
const uint8_t kPayload[kPaddingSize] = {0};
RTPHeader header = GetDefaultRTPHeader();
RTPVideoHeader video_header = GetDefaultVp8Header();
header.paddingLength = kPaddingSize;
for (int i = 0; i < 10; ++i) {
EXPECT_CALL(packet_request_callback_, ResendPackets(_, _)).Times(0);
InsertAndVerifyPaddingFrame(kPayload, &header, video_header);
clock_.AdvanceTimeMilliseconds(33);
header.timestamp += 3000;
}
}
TEST_F(TestVideoReceiver, PaddingOnlyFramesWithLosses) {
const size_t kFrameSize = 1200;
const size_t kPaddingSize = 220;
const uint8_t kPayload[kFrameSize] = {0};
RTPHeader header = GetDefaultRTPHeader();
RTPVideoHeader video_header = GetDefaultVp8Header();
header.paddingLength = kPaddingSize;
video_header.video_type_header.emplace<RTPVideoHeaderVP8>();
// Insert one video frame to get one frame decoded.
video_header.frame_type = VideoFrameType::kVideoFrameKey;
video_header.is_first_packet_in_frame = true;
header.markerBit = true;
InsertAndVerifyDecodableFrame(kPayload, kFrameSize, &header, video_header);
clock_.AdvanceTimeMilliseconds(33);
header.timestamp += 3000;
video_header.frame_type = VideoFrameType::kEmptyFrame;
video_header.is_first_packet_in_frame = false;
header.markerBit = false;
// Insert padding frames.
for (int i = 0; i < 10; ++i) {
// Lose one packet from the 6th frame.
if (i == 5) {
++header.sequenceNumber;
}
// Lose the 4th frame.
if (i == 3) {
header.sequenceNumber += 5;
} else {
if (i > 3 && i < 5) {
EXPECT_CALL(packet_request_callback_, ResendPackets(_, 5)).Times(1);
} else if (i >= 5) {
EXPECT_CALL(packet_request_callback_, ResendPackets(_, 6)).Times(1);
} else {
EXPECT_CALL(packet_request_callback_, ResendPackets(_, _)).Times(0);
}
InsertAndVerifyPaddingFrame(kPayload, &header, video_header);
}
clock_.AdvanceTimeMilliseconds(33);
header.timestamp += 3000;
}
}
TEST_F(TestVideoReceiver, PaddingOnlyAndVideo) {
const size_t kFrameSize = 1200;
const size_t kPaddingSize = 220;
const uint8_t kPayload[kFrameSize] = {0};
RTPHeader header = GetDefaultRTPHeader();
RTPVideoHeader video_header = GetDefaultVp8Header();
video_header.is_first_packet_in_frame = false;
header.paddingLength = kPaddingSize;
auto& vp8_header =
video_header.video_type_header.emplace<RTPVideoHeaderVP8>();
vp8_header.pictureId = -1;
vp8_header.tl0PicIdx = -1;
for (int i = 0; i < 3; ++i) {
// Insert 2 video frames.
for (int j = 0; j < 2; ++j) {
if (i == 0 && j == 0) // First frame should be a key frame.
video_header.frame_type = VideoFrameType::kVideoFrameKey;
else
video_header.frame_type = VideoFrameType::kVideoFrameDelta;
video_header.is_first_packet_in_frame = true;
header.markerBit = true;
InsertAndVerifyDecodableFrame(kPayload, kFrameSize, &header,
video_header);
clock_.AdvanceTimeMilliseconds(33);
header.timestamp += 3000;
}
// Insert 2 padding only frames.
video_header.frame_type = VideoFrameType::kEmptyFrame;
video_header.is_first_packet_in_frame = false;
header.markerBit = false;
for (int j = 0; j < 2; ++j) {
// InsertAndVerifyPaddingFrame(kPayload, &header);
clock_.AdvanceTimeMilliseconds(33);
header.timestamp += 3000;
}
}
}
} // namespace
} // namespace vcm
} // namespace webrtc
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