mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-23 16:37:30 +00:00
203 lines
7.7 KiB
C++
203 lines
7.7 KiB
C++
/*
|
|
* 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.
|
|
*/
|
|
|
|
// Unit tests for test Packet class.
|
|
|
|
#include "webrtc/modules/audio_coding/neteq/tools/packet.h"
|
|
|
|
#include "gtest/gtest.h"
|
|
|
|
namespace webrtc {
|
|
namespace test {
|
|
|
|
namespace {
|
|
const int kHeaderLengthBytes = 12;
|
|
|
|
void MakeRtpHeader(int payload_type,
|
|
int seq_number,
|
|
uint32_t timestamp,
|
|
uint32_t ssrc,
|
|
uint8_t* rtp_data) {
|
|
rtp_data[0] = 0x80;
|
|
rtp_data[1] = payload_type & 0xFF;
|
|
rtp_data[2] = (seq_number >> 8) & 0xFF;
|
|
rtp_data[3] = (seq_number) & 0xFF;
|
|
rtp_data[4] = (timestamp >> 24) & 0xFF;
|
|
rtp_data[5] = (timestamp >> 16) & 0xFF;
|
|
rtp_data[6] = (timestamp >> 8) & 0xFF;
|
|
rtp_data[7] = timestamp & 0xFF;
|
|
rtp_data[8] = (ssrc >> 24) & 0xFF;
|
|
rtp_data[9] = (ssrc >> 16) & 0xFF;
|
|
rtp_data[10] = (ssrc >> 8) & 0xFF;
|
|
rtp_data[11] = ssrc & 0xFF;
|
|
}
|
|
} // namespace
|
|
|
|
TEST(TestPacket, RegularPacket) {
|
|
const size_t kPacketLengthBytes = 100;
|
|
uint8_t* packet_memory = new uint8_t[kPacketLengthBytes];
|
|
const uint8_t kPayloadType = 17;
|
|
const uint16_t kSequenceNumber = 4711;
|
|
const uint32_t kTimestamp = 47114711;
|
|
const uint32_t kSsrc = 0x12345678;
|
|
MakeRtpHeader(
|
|
kPayloadType, kSequenceNumber, kTimestamp, kSsrc, packet_memory);
|
|
const double kPacketTime = 1.0;
|
|
// Hand over ownership of |packet_memory| to |packet|.
|
|
Packet packet(packet_memory, kPacketLengthBytes, kPacketTime);
|
|
ASSERT_TRUE(packet.valid_header());
|
|
EXPECT_EQ(kPayloadType, packet.header().payloadType);
|
|
EXPECT_EQ(kSequenceNumber, packet.header().sequenceNumber);
|
|
EXPECT_EQ(kTimestamp, packet.header().timestamp);
|
|
EXPECT_EQ(kSsrc, packet.header().ssrc);
|
|
EXPECT_EQ(0, packet.header().numCSRCs);
|
|
EXPECT_EQ(kPacketLengthBytes, packet.packet_length_bytes());
|
|
EXPECT_EQ(kPacketLengthBytes - kHeaderLengthBytes,
|
|
packet.payload_length_bytes());
|
|
EXPECT_EQ(kPacketLengthBytes, packet.virtual_packet_length_bytes());
|
|
EXPECT_EQ(kPacketLengthBytes - kHeaderLengthBytes,
|
|
packet.virtual_payload_length_bytes());
|
|
EXPECT_EQ(kPacketTime, packet.time_ms());
|
|
}
|
|
|
|
TEST(TestPacket, DummyPacket) {
|
|
const size_t kPacketLengthBytes = kHeaderLengthBytes; // Only RTP header.
|
|
const size_t kVirtualPacketLengthBytes = 100;
|
|
uint8_t* packet_memory = new uint8_t[kPacketLengthBytes];
|
|
const uint8_t kPayloadType = 17;
|
|
const uint16_t kSequenceNumber = 4711;
|
|
const uint32_t kTimestamp = 47114711;
|
|
const uint32_t kSsrc = 0x12345678;
|
|
MakeRtpHeader(
|
|
kPayloadType, kSequenceNumber, kTimestamp, kSsrc, packet_memory);
|
|
const double kPacketTime = 1.0;
|
|
// Hand over ownership of |packet_memory| to |packet|.
|
|
Packet packet(packet_memory,
|
|
kPacketLengthBytes,
|
|
kVirtualPacketLengthBytes,
|
|
kPacketTime);
|
|
ASSERT_TRUE(packet.valid_header());
|
|
EXPECT_EQ(kPayloadType, packet.header().payloadType);
|
|
EXPECT_EQ(kSequenceNumber, packet.header().sequenceNumber);
|
|
EXPECT_EQ(kTimestamp, packet.header().timestamp);
|
|
EXPECT_EQ(kSsrc, packet.header().ssrc);
|
|
EXPECT_EQ(0, packet.header().numCSRCs);
|
|
EXPECT_EQ(kPacketLengthBytes, packet.packet_length_bytes());
|
|
EXPECT_EQ(kPacketLengthBytes - kHeaderLengthBytes,
|
|
packet.payload_length_bytes());
|
|
EXPECT_EQ(kVirtualPacketLengthBytes, packet.virtual_packet_length_bytes());
|
|
EXPECT_EQ(kVirtualPacketLengthBytes - kHeaderLengthBytes,
|
|
packet.virtual_payload_length_bytes());
|
|
EXPECT_EQ(kPacketTime, packet.time_ms());
|
|
}
|
|
|
|
namespace {
|
|
// Writes one RED block header starting at |rtp_data|, according to RFC 2198.
|
|
// returns the number of bytes written (1 or 4).
|
|
//
|
|
// Format if |last_payoad| is false:
|
|
// 0 1 2 3
|
|
// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
// |1| block PT | timestamp offset | block length |
|
|
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
//
|
|
// Format if |last_payoad| is true:
|
|
// 0 1 2 3 4 5 6 7
|
|
// +-+-+-+-+-+-+-+-+
|
|
// |0| Block PT |
|
|
// +-+-+-+-+-+-+-+-+
|
|
|
|
int MakeRedHeader(int payload_type,
|
|
uint32_t timestamp_offset,
|
|
int block_length,
|
|
bool last_payload,
|
|
uint8_t* rtp_data) {
|
|
rtp_data[0] = 0x80 | (payload_type & 0x7F); // Set the first bit to 1.
|
|
if (last_payload) {
|
|
rtp_data[0] &= 0x7F; // Reset the first but to 0 to indicate last block.
|
|
return 1;
|
|
}
|
|
rtp_data[1] = timestamp_offset >> 6;
|
|
rtp_data[2] = (timestamp_offset & 0x3F) << 2;
|
|
rtp_data[2] |= block_length >> 8;
|
|
rtp_data[3] = block_length & 0xFF;
|
|
return 4;
|
|
}
|
|
} // namespace
|
|
|
|
TEST(TestPacket, RED) {
|
|
const size_t kPacketLengthBytes = 100;
|
|
uint8_t* packet_memory = new uint8_t[kPacketLengthBytes];
|
|
const uint8_t kRedPayloadType = 17;
|
|
const uint16_t kSequenceNumber = 4711;
|
|
const uint32_t kTimestamp = 47114711;
|
|
const uint32_t kSsrc = 0x12345678;
|
|
MakeRtpHeader(
|
|
kRedPayloadType, kSequenceNumber, kTimestamp, kSsrc, packet_memory);
|
|
// Create four RED headers.
|
|
// Payload types are just the same as the block index the offset is 100 times
|
|
// the block index.
|
|
const int kRedBlocks = 4;
|
|
uint8_t* payload_ptr =
|
|
&packet_memory[kHeaderLengthBytes]; // First byte after header.
|
|
for (int i = 0; i < kRedBlocks; ++i) {
|
|
int payload_type = i;
|
|
// Offset value is not used for the last block.
|
|
uint32_t timestamp_offset = 100 * i;
|
|
int block_length = 10 * i;
|
|
bool last_block = (i == kRedBlocks - 1) ? true : false;
|
|
payload_ptr += MakeRedHeader(
|
|
payload_type, timestamp_offset, block_length, last_block, payload_ptr);
|
|
}
|
|
const double kPacketTime = 1.0;
|
|
// Hand over ownership of |packet_memory| to |packet|.
|
|
Packet packet(packet_memory, kPacketLengthBytes, kPacketTime);
|
|
ASSERT_TRUE(packet.valid_header());
|
|
EXPECT_EQ(kRedPayloadType, packet.header().payloadType);
|
|
EXPECT_EQ(kSequenceNumber, packet.header().sequenceNumber);
|
|
EXPECT_EQ(kTimestamp, packet.header().timestamp);
|
|
EXPECT_EQ(kSsrc, packet.header().ssrc);
|
|
EXPECT_EQ(0, packet.header().numCSRCs);
|
|
EXPECT_EQ(kPacketLengthBytes, packet.packet_length_bytes());
|
|
EXPECT_EQ(kPacketLengthBytes - kHeaderLengthBytes,
|
|
packet.payload_length_bytes());
|
|
EXPECT_EQ(kPacketLengthBytes, packet.virtual_packet_length_bytes());
|
|
EXPECT_EQ(kPacketLengthBytes - kHeaderLengthBytes,
|
|
packet.virtual_payload_length_bytes());
|
|
EXPECT_EQ(kPacketTime, packet.time_ms());
|
|
std::list<RTPHeader*> red_headers;
|
|
EXPECT_TRUE(packet.ExtractRedHeaders(&red_headers));
|
|
EXPECT_EQ(kRedBlocks, static_cast<int>(red_headers.size()));
|
|
int block_index = 0;
|
|
for (std::list<RTPHeader*>::reverse_iterator it = red_headers.rbegin();
|
|
it != red_headers.rend();
|
|
++it) {
|
|
// Reading list from the back, since the extraction puts the main payload
|
|
// (which is the last one on wire) first.
|
|
RTPHeader* red_block = *it;
|
|
EXPECT_EQ(block_index, red_block->payloadType);
|
|
EXPECT_EQ(kSequenceNumber, red_block->sequenceNumber);
|
|
if (block_index == kRedBlocks - 1) {
|
|
// Last block has zero offset per definition.
|
|
EXPECT_EQ(kTimestamp, red_block->timestamp);
|
|
} else {
|
|
EXPECT_EQ(kTimestamp - 100 * block_index, red_block->timestamp);
|
|
}
|
|
EXPECT_EQ(kSsrc, red_block->ssrc);
|
|
EXPECT_EQ(0, red_block->numCSRCs);
|
|
++block_index;
|
|
}
|
|
Packet::DeleteRedHeaders(&red_headers);
|
|
}
|
|
|
|
} // namespace test
|
|
} // namespace webrtc
|