1 /*
2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "modules/rtp_rtcp/source/rtcp_packet/dlrr.h"
12
13 #include "modules/rtp_rtcp/source/byte_io.h"
14 #include "test/gtest.h"
15
16 using webrtc::rtcp::Dlrr;
17 using webrtc::rtcp::ReceiveTimeInfo;
18
19 namespace webrtc {
20 namespace {
21 const uint32_t kSsrc = 0x12345678;
22 const uint32_t kLastRR = 0x23344556;
23 const uint32_t kDelay = 0x33343536;
24 const uint8_t kBlock[] = {0x05, 0x00, 0x00, 0x03, 0x12, 0x34, 0x56, 0x78,
25 0x23, 0x34, 0x45, 0x56, 0x33, 0x34, 0x35, 0x36};
26 const size_t kBlockSizeBytes = sizeof(kBlock);
27 } // namespace
28
TEST(RtcpPacketDlrrTest,Empty)29 TEST(RtcpPacketDlrrTest, Empty) {
30 Dlrr dlrr;
31
32 EXPECT_EQ(0u, dlrr.BlockLength());
33 }
34
TEST(RtcpPacketDlrrTest,Create)35 TEST(RtcpPacketDlrrTest, Create) {
36 Dlrr dlrr;
37 dlrr.AddDlrrItem(ReceiveTimeInfo(kSsrc, kLastRR, kDelay));
38
39 ASSERT_EQ(kBlockSizeBytes, dlrr.BlockLength());
40 uint8_t buffer[kBlockSizeBytes];
41
42 dlrr.Create(buffer);
43 EXPECT_EQ(0, memcmp(buffer, kBlock, kBlockSizeBytes));
44 }
45
TEST(RtcpPacketDlrrTest,Parse)46 TEST(RtcpPacketDlrrTest, Parse) {
47 Dlrr dlrr;
48 uint16_t block_length = ByteReader<uint16_t>::ReadBigEndian(&kBlock[2]);
49 EXPECT_TRUE(dlrr.Parse(kBlock, block_length));
50
51 EXPECT_EQ(1u, dlrr.sub_blocks().size());
52 const ReceiveTimeInfo& block = dlrr.sub_blocks().front();
53 EXPECT_EQ(kSsrc, block.ssrc);
54 EXPECT_EQ(kLastRR, block.last_rr);
55 EXPECT_EQ(kDelay, block.delay_since_last_rr);
56 }
57
TEST(RtcpPacketDlrrTest,ParseFailsOnBadSize)58 TEST(RtcpPacketDlrrTest, ParseFailsOnBadSize) {
59 const size_t kBigBufferSize = 0x100; // More than enough.
60 uint8_t buffer[kBigBufferSize];
61 buffer[0] = Dlrr::kBlockType;
62 buffer[1] = 0; // Reserved.
63 buffer[2] = 0; // Most significant size byte.
64 for (uint8_t size = 3; size < 6; ++size) {
65 buffer[3] = size;
66 Dlrr dlrr;
67 // Parse should be successful only when size is multiple of 3.
68 EXPECT_EQ(size % 3 == 0, dlrr.Parse(buffer, static_cast<uint16_t>(size)));
69 }
70 }
71
TEST(RtcpPacketDlrrTest,CreateAndParseManySubBlocks)72 TEST(RtcpPacketDlrrTest, CreateAndParseManySubBlocks) {
73 const size_t kBufferSize = 0x1000; // More than enough.
74 const size_t kManyDlrrItems = 50;
75 uint8_t buffer[kBufferSize];
76
77 // Create.
78 Dlrr dlrr;
79 for (size_t i = 1; i <= kManyDlrrItems; ++i)
80 dlrr.AddDlrrItem(ReceiveTimeInfo(kSsrc + i, kLastRR + i, kDelay + i));
81 size_t used_buffer_size = dlrr.BlockLength();
82 ASSERT_LE(used_buffer_size, kBufferSize);
83 dlrr.Create(buffer);
84
85 // Parse.
86 Dlrr parsed;
87 uint16_t block_length = ByteReader<uint16_t>::ReadBigEndian(&buffer[2]);
88 EXPECT_EQ(used_buffer_size, (block_length + 1) * 4u);
89 EXPECT_TRUE(parsed.Parse(buffer, block_length));
90 EXPECT_EQ(kManyDlrrItems, parsed.sub_blocks().size());
91 }
92 } // namespace webrtc
93