blob: 92239128d38ae96c23e56d58b03e97006a81ea0a [file] [log] [blame]
/*
* Copyright (c) 2014 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/test/gtest.h"
#include "webrtc/base/checks.h"
#include "webrtc/modules/rtp_rtcp/source/byte_io.h"
#include "webrtc/modules/rtp_rtcp/source/rtcp_utility.h"
namespace webrtc {
using RTCPUtility::RtcpCommonHeader;
namespace rtcp {
TEST(RtcpUtilityTest, MidNtp) {
const uint32_t kNtpSec = 0x12345678;
const uint32_t kNtpFrac = 0x23456789;
const uint32_t kNtpMid = 0x56782345;
EXPECT_EQ(kNtpMid, RTCPUtility::MidNtp(kNtpSec, kNtpFrac));
}
TEST(RtcpUtilityTest, NackRequests) {
RTCPUtility::NackStats stats;
EXPECT_EQ(0U, stats.unique_requests());
EXPECT_EQ(0U, stats.requests());
stats.ReportRequest(10);
EXPECT_EQ(1U, stats.unique_requests());
EXPECT_EQ(1U, stats.requests());
stats.ReportRequest(10);
EXPECT_EQ(1U, stats.unique_requests());
stats.ReportRequest(11);
EXPECT_EQ(2U, stats.unique_requests());
stats.ReportRequest(11);
EXPECT_EQ(2U, stats.unique_requests());
stats.ReportRequest(13);
EXPECT_EQ(3U, stats.unique_requests());
stats.ReportRequest(11);
EXPECT_EQ(3U, stats.unique_requests());
EXPECT_EQ(6U, stats.requests());
}
TEST(RtcpUtilityTest, NackRequestsWithWrap) {
RTCPUtility::NackStats stats;
stats.ReportRequest(65534);
EXPECT_EQ(1U, stats.unique_requests());
stats.ReportRequest(65534);
EXPECT_EQ(1U, stats.unique_requests());
stats.ReportRequest(65535);
EXPECT_EQ(2U, stats.unique_requests());
stats.ReportRequest(65535);
EXPECT_EQ(2U, stats.unique_requests());
stats.ReportRequest(0);
EXPECT_EQ(3U, stats.unique_requests());
stats.ReportRequest(65535);
EXPECT_EQ(3U, stats.unique_requests());
stats.ReportRequest(0);
EXPECT_EQ(3U, stats.unique_requests());
stats.ReportRequest(1);
EXPECT_EQ(4U, stats.unique_requests());
EXPECT_EQ(8U, stats.requests());
}
class RtcpParseCommonHeaderTest : public ::testing::Test {
public:
RtcpParseCommonHeaderTest() { memset(buffer, 0, kBufferCapacityBytes); }
virtual ~RtcpParseCommonHeaderTest() {}
protected:
static const size_t kBufferCapacityBytes = 40;
uint8_t buffer[kBufferCapacityBytes];
RtcpCommonHeader header;
};
TEST_F(RtcpParseCommonHeaderTest, TooSmallBuffer) {
// Buffer needs to be able to hold the header.
for (size_t i = 0; i < RtcpCommonHeader::kHeaderSizeBytes; ++i)
EXPECT_FALSE(RtcpParseCommonHeader(buffer, i, &header));
}
TEST_F(RtcpParseCommonHeaderTest, Version) {
// Version 2 is the only allowed for now.
for (int v = 0; v < 4; ++v) {
buffer[0] = v << 6;
EXPECT_EQ(v == 2, RtcpParseCommonHeader(
buffer, RtcpCommonHeader::kHeaderSizeBytes, &header));
}
}
TEST_F(RtcpParseCommonHeaderTest, PacketSize) {
// Set v = 2, leave p, fmt, pt as 0.
buffer[0] = 2 << 6;
const size_t kBlockSize = 3;
ByteWriter<uint16_t>::WriteBigEndian(&buffer[2], kBlockSize);
const size_t kSizeInBytes = (kBlockSize + 1) * 4;
EXPECT_FALSE(RtcpParseCommonHeader(buffer, kSizeInBytes - 1, &header));
EXPECT_TRUE(RtcpParseCommonHeader(buffer, kSizeInBytes, &header));
}
TEST_F(RtcpParseCommonHeaderTest, PayloadSize) {
// Set v = 2, p = 1, but leave fmt, pt as 0.
buffer[0] = (2 << 6) | (1 << 5);
// Padding bit set, but no byte for padding (can't specify padding length).
EXPECT_FALSE(RtcpParseCommonHeader(buffer, 4, &header));
const size_t kBlockSize = 3;
ByteWriter<uint16_t>::WriteBigEndian(&buffer[2], kBlockSize);
const size_t kSizeInBytes = (kBlockSize + 1) * 4;
const size_t kPayloadSizeBytes =
kSizeInBytes - RtcpCommonHeader::kHeaderSizeBytes;
// Padding one byte larger than possible.
buffer[kSizeInBytes - 1] = kPayloadSizeBytes + 1;
EXPECT_FALSE(RtcpParseCommonHeader(buffer, kSizeInBytes, &header));
// Pure padding packet?
buffer[kSizeInBytes - 1] = kPayloadSizeBytes;
EXPECT_TRUE(RtcpParseCommonHeader(buffer, kSizeInBytes, &header));
EXPECT_EQ(kPayloadSizeBytes, header.padding_bytes);
EXPECT_EQ(0u, header.payload_size_bytes);
// Single byte of actual data.
buffer[kSizeInBytes - 1] = kPayloadSizeBytes - 1;
EXPECT_TRUE(RtcpParseCommonHeader(buffer, kSizeInBytes, &header));
EXPECT_EQ(kPayloadSizeBytes - 1, header.padding_bytes);
EXPECT_EQ(1u, header.payload_size_bytes);
}
TEST_F(RtcpParseCommonHeaderTest, FormatAndPayloadType) {
// Format/count and packet type both set to max values.
const uint8_t kCountOrFormat = 0x1F;
const uint8_t kPacketType = 0xFF;
buffer[0] = 2 << 6; // V = 2.
buffer[0] |= kCountOrFormat;
buffer[1] = kPacketType;
EXPECT_TRUE(RtcpParseCommonHeader(buffer, RtcpCommonHeader::kHeaderSizeBytes,
&header));
EXPECT_EQ(kCountOrFormat, header.count_or_format);
EXPECT_EQ(kPacketType, header.packet_type);
}
} // namespace rtcp
} // namespace webrtc