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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// A very simple packet builder class for building RTCP packets.
// Used for testing only.
#ifndef MEDIA_CAST_RTCP_TEST_RTCP_PACKET_BUILDER_H_
#define MEDIA_CAST_RTCP_TEST_RTCP_PACKET_BUILDER_H_
#include "base/big_endian.h"
#include "media/cast/cast_config.h"
#include "media/cast/rtcp/rtcp_defines.h"
namespace media {
namespace cast {
// These values are arbitrary only for the purpose of testing.
namespace {
// Sender report.
static const int kNtpHigh = 0x01020304;
static const int kNtpLow = 0x05060708;
static const int kRtpTimestamp = 0x10203040;
static const int kSendPacketCount = 987;
static const int kSendOctetCount = 87654;
// Report block.
static const int kLoss = 0x01000123;
static const int kExtendedMax = 0x15678;
static const int kTestJitter = 0x10203;
static const int kLastSr = 0x34561234;
static const int kDelayLastSr = 1000;
// DLRR block.
static const int kLastRr = 0x34561234;
static const int kDelayLastRr = 1000;
// REMB.
static const int kTestRembBitrate = 52428;
// RPSI.
static const int kPayloadtype = 126;
static const uint64 kPictureId = 0x1234567890;
// NACK.
static const int kMissingPacket = 34567;
// CAST.
static const uint32 kAckFrameId = 17;
static const uint32 kLostFrameId = 18;
static const uint32 kFrameIdWithLostPackets = 19;
static const int kLostPacketId1 = 3;
static const int kLostPacketId2 = 5;
static const int kLostPacketId3 = 12;
} // namespace
class TestRtcpPacketBuilder {
public:
TestRtcpPacketBuilder();
void AddSr(uint32 sender_ssrc, int number_of_report_blocks);
void AddSrWithNtp(uint32 sender_ssrc,
uint32 ntp_high,
uint32 ntp_low,
uint32 rtp_timestamp);
void AddRr(uint32 sender_ssrc, int number_of_report_blocks);
void AddRb(uint32 rtp_ssrc);
void AddSdesCname(uint32 sender_ssrc, const std::string& c_name);
void AddXrHeader(uint32 sender_ssrc);
void AddXrDlrrBlock(uint32 sender_ssrc);
void AddXrExtendedDlrrBlock(uint32 sender_ssrc);
void AddXrRrtrBlock();
void AddXrUnknownBlock();
void AddNack(uint32 sender_ssrc, uint32 media_ssrc);
void AddSendReportRequest(uint32 sender_ssrc, uint32 media_ssrc);
void AddPli(uint32 sender_ssrc, uint32 media_ssrc);
void AddRpsi(uint32 sender_ssrc, uint32 media_ssrc);
void AddRemb(uint32 sender_ssrc, uint32 media_ssrc);
void AddCast(uint32 sender_ssrc, uint32 media_ssrc, uint16 target_delay_ms);
void AddSenderLog(uint32 sender_ssrc);
void AddSenderFrameLog(uint8 event_id, uint32 rtp_timestamp);
void AddReceiverLog(uint32 sender_ssrc);
void AddReceiverFrameLog(uint32 rtp_timestamp,
int num_events,
uint32 event_timesamp_base);
void AddReceiverEventLog(uint16 event_data,
uint8 event_id,
uint16 event_timesamp_delta);
scoped_ptr<Packet> GetPacket();
const uint8* Data();
int Length() { return kMaxIpPacketSize - big_endian_writer_.remaining(); }
private:
void AddRtcpHeader(int payload, int format_or_count);
void PatchLengthField();
// Where the length field of the current packet is.
// Note: 0 is not a legal value, it is used for "uninitialized".
uint8 buffer_[kMaxIpPacketSize];
char* ptr_of_length_;
base::BigEndianWriter big_endian_writer_;
DISALLOW_COPY_AND_ASSIGN(TestRtcpPacketBuilder);
};
} // namespace cast
} // namespace media
#endif // MEDIA_CAST_RTCP_TEST_RTCP_PACKET_BUILDER_H_
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