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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 <vector>
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/modules/video_coding/codecs/interface/mock/mock_video_codec_interface.h"
#include "webrtc/modules/video_coding/main/interface/mock/mock_vcm_callbacks.h"
#include "webrtc/modules/video_coding/main/interface/video_coding.h"
#include "webrtc/modules/video_coding/main/source/video_coding_impl.h"
#include "webrtc/modules/video_coding/main/test/test_util.h"
#include "webrtc/system_wrappers/include/clock.h"
using ::testing::_;
using ::testing::NiceMock;
namespace webrtc {
namespace vcm {
namespace {
class TestVideoReceiver : public ::testing::Test {
protected:
static const int kUnusedPayloadType = 10;
TestVideoReceiver() : clock_(0) {}
virtual void SetUp() {
receiver_.reset(new VideoReceiver(&clock_, &event_factory_));
EXPECT_EQ(0, receiver_->RegisterExternalDecoder(&decoder_,
kUnusedPayloadType, true));
const size_t kMaxNackListSize = 250;
const int kMaxPacketAgeToNack = 450;
receiver_->SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack, 0);
memset(&settings_, 0, sizeof(settings_));
EXPECT_EQ(0, VideoCodingModule::Codec(kVideoCodecVP8, &settings_));
settings_.plType = kUnusedPayloadType; // Use the mocked encoder.
EXPECT_EQ(0, receiver_->RegisterReceiveCodec(&settings_, 1, true));
}
void InsertAndVerifyPaddingFrame(const uint8_t* payload,
WebRtcRTPHeader* header) {
ASSERT_TRUE(header != NULL);
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));
++header->header.sequenceNumber;
}
EXPECT_EQ(0, receiver_->Process());
EXPECT_CALL(decoder_, Decode(_, _, _, _, _)).Times(0);
EXPECT_EQ(VCM_FRAME_NOT_READY, receiver_->Decode(0));
}
void InsertAndVerifyDecodableFrame(const uint8_t* payload,
size_t length,
WebRtcRTPHeader* header) {
ASSERT_TRUE(header != NULL);
EXPECT_EQ(0, receiver_->IncomingPacket(payload, length, *header));
++header->header.sequenceNumber;
EXPECT_CALL(packet_request_callback_, ResendPackets(_, _)).Times(0);
EXPECT_EQ(0, receiver_->Process());
EXPECT_CALL(decoder_, Decode(_, _, _, _, _)).Times(1);
EXPECT_EQ(0, receiver_->Decode(0));
}
SimulatedClock clock_;
NullEventFactory event_factory_;
VideoCodec settings_;
NiceMock<MockVideoDecoder> decoder_;
NiceMock<MockPacketRequestCallback> packet_request_callback_;
rtc::scoped_ptr<VideoReceiver> receiver_;
};
TEST_F(TestVideoReceiver, PaddingOnlyFrames) {
EXPECT_EQ(0, receiver_->SetVideoProtection(kProtectionNack, true));
EXPECT_EQ(
0, receiver_->RegisterPacketRequestCallback(&packet_request_callback_));
const size_t kPaddingSize = 220;
const uint8_t payload[kPaddingSize] = {0};
WebRtcRTPHeader header;
memset(&header, 0, sizeof(header));
header.frameType = kEmptyFrame;
header.header.markerBit = false;
header.header.paddingLength = kPaddingSize;
header.header.payloadType = kUnusedPayloadType;
header.header.ssrc = 1;
header.header.headerLength = 12;
header.type.Video.codec = kRtpVideoVp8;
for (int i = 0; i < 10; ++i) {
EXPECT_CALL(packet_request_callback_, ResendPackets(_, _)).Times(0);
InsertAndVerifyPaddingFrame(payload, &header);
clock_.AdvanceTimeMilliseconds(33);
header.header.timestamp += 3000;
}
}
TEST_F(TestVideoReceiver, PaddingOnlyFramesWithLosses) {
EXPECT_EQ(0, receiver_->SetVideoProtection(kProtectionNack, true));
EXPECT_EQ(
0, receiver_->RegisterPacketRequestCallback(&packet_request_callback_));
const size_t kFrameSize = 1200;
const size_t kPaddingSize = 220;
const uint8_t payload[kFrameSize] = {0};
WebRtcRTPHeader header;
memset(&header, 0, sizeof(header));
header.frameType = kEmptyFrame;
header.header.markerBit = false;
header.header.paddingLength = kPaddingSize;
header.header.payloadType = kUnusedPayloadType;
header.header.ssrc = 1;
header.header.headerLength = 12;
header.type.Video.codec = kRtpVideoVp8;
// Insert one video frame to get one frame decoded.
header.frameType = kVideoFrameKey;
header.type.Video.isFirstPacket = true;
header.header.markerBit = true;
InsertAndVerifyDecodableFrame(payload, kFrameSize, &header);
clock_.AdvanceTimeMilliseconds(33);
header.header.timestamp += 3000;
header.frameType = kEmptyFrame;
header.type.Video.isFirstPacket = false;
header.header.markerBit = false;
// Insert padding frames.
for (int i = 0; i < 10; ++i) {
// Lose one packet from the 6th frame.
if (i == 5) {
++header.header.sequenceNumber;
}
// Lose the 4th frame.
if (i == 3) {
header.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(payload, &header);
}
clock_.AdvanceTimeMilliseconds(33);
header.header.timestamp += 3000;
}
}
TEST_F(TestVideoReceiver, PaddingOnlyAndVideo) {
EXPECT_EQ(0, receiver_->SetVideoProtection(kProtectionNack, true));
EXPECT_EQ(
0, receiver_->RegisterPacketRequestCallback(&packet_request_callback_));
const size_t kFrameSize = 1200;
const size_t kPaddingSize = 220;
const uint8_t payload[kFrameSize] = {0};
WebRtcRTPHeader header;
memset(&header, 0, sizeof(header));
header.frameType = kEmptyFrame;
header.type.Video.isFirstPacket = false;
header.header.markerBit = false;
header.header.paddingLength = kPaddingSize;
header.header.payloadType = kUnusedPayloadType;
header.header.ssrc = 1;
header.header.headerLength = 12;
header.type.Video.codec = kRtpVideoVp8;
header.type.Video.codecHeader.VP8.pictureId = -1;
header.type.Video.codecHeader.VP8.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.
header.frameType = kVideoFrameKey;
else
header.frameType = kVideoFrameDelta;
header.type.Video.isFirstPacket = true;
header.header.markerBit = true;
InsertAndVerifyDecodableFrame(payload, kFrameSize, &header);
clock_.AdvanceTimeMilliseconds(33);
header.header.timestamp += 3000;
}
// Insert 2 padding only frames.
header.frameType = kEmptyFrame;
header.type.Video.isFirstPacket = false;
header.header.markerBit = false;
for (int j = 0; j < 2; ++j) {
// InsertAndVerifyPaddingFrame(payload, &header);
clock_.AdvanceTimeMilliseconds(33);
header.header.timestamp += 3000;
}
}
}
TEST_F(TestVideoReceiver, ReceiverDelay) {
EXPECT_EQ(0, receiver_->SetMinReceiverDelay(0));
EXPECT_EQ(0, receiver_->SetMinReceiverDelay(5000));
EXPECT_EQ(-1, receiver_->SetMinReceiverDelay(-100));
EXPECT_EQ(-1, receiver_->SetMinReceiverDelay(10010));
}
} // namespace
} // namespace vcm
} // namespace webrtc
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