| /* |
| * Copyright (c) 2015 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 <string.h> |
| |
| #include <iostream> |
| #include <memory> |
| #include <sstream> |
| #include <string> |
| |
| #include "webrtc/logging/rtc_event_log/rtc_event_log.h" |
| #include "webrtc/logging/rtc_event_log/rtc_event_log_parser.h" |
| #include "webrtc/modules/rtp_rtcp/source/byte_io.h" |
| #include "webrtc/modules/rtp_rtcp/source/rtp_utility.h" |
| #include "webrtc/rtc_base/checks.h" |
| #include "webrtc/rtc_base/flags.h" |
| #include "webrtc/test/rtp_file_writer.h" |
| |
| namespace { |
| |
| using MediaType = webrtc::ParsedRtcEventLog::MediaType; |
| |
| DEFINE_bool( |
| audio, |
| true, |
| "Use --noaudio to exclude audio packets from the converted RTPdump file."); |
| DEFINE_bool( |
| video, |
| true, |
| "Use --novideo to exclude video packets from the converted RTPdump file."); |
| DEFINE_bool( |
| data, |
| true, |
| "Use --nodata to exclude data packets from the converted RTPdump file."); |
| DEFINE_bool( |
| rtp, |
| true, |
| "Use --nortp to exclude RTP packets from the converted RTPdump file."); |
| DEFINE_bool( |
| rtcp, |
| true, |
| "Use --nortcp to exclude RTCP packets from the converted RTPdump file."); |
| DEFINE_string(ssrc, |
| "", |
| "Store only packets with this SSRC (decimal or hex, the latter " |
| "starting with 0x)."); |
| DEFINE_bool(help, false, "Prints this message."); |
| |
| // Parses the input string for a valid SSRC. If a valid SSRC is found, it is |
| // written to the output variable |ssrc|, and true is returned. Otherwise, |
| // false is returned. |
| // The empty string must be validated as true, because it is the default value |
| // of the command-line flag. In this case, no value is written to the output |
| // variable. |
| bool ParseSsrc(std::string str, uint32_t* ssrc) { |
| // If the input string starts with 0x or 0X it indicates a hexadecimal number. |
| auto read_mode = std::dec; |
| if (str.size() > 2 && |
| (str.substr(0, 2) == "0x" || str.substr(0, 2) == "0X")) { |
| read_mode = std::hex; |
| str = str.substr(2); |
| } |
| std::stringstream ss(str); |
| ss >> read_mode >> *ssrc; |
| return str.empty() || (!ss.fail() && ss.eof()); |
| } |
| |
| } // namespace |
| |
| // This utility will convert a stored event log to the rtpdump format. |
| int main(int argc, char* argv[]) { |
| std::string program_name = argv[0]; |
| std::string usage = |
| "Tool for converting an RtcEventLog file to an RTP dump file.\n" |
| "Run " + |
| program_name + |
| " --help for usage.\n" |
| "Example usage:\n" + |
| program_name + " input.rel output.rtp\n"; |
| if (rtc::FlagList::SetFlagsFromCommandLine(&argc, argv, true) || |
| FLAG_help || argc != 3) { |
| std::cout << usage; |
| if (FLAG_help) { |
| rtc::FlagList::Print(nullptr, false); |
| return 0; |
| } |
| return 1; |
| } |
| |
| std::string input_file = argv[1]; |
| std::string output_file = argv[2]; |
| |
| uint32_t ssrc_filter = 0; |
| if (strlen(FLAG_ssrc) > 0) |
| RTC_CHECK(ParseSsrc(FLAG_ssrc, &ssrc_filter)) |
| << "Flag verification has failed."; |
| |
| webrtc::ParsedRtcEventLog parsed_stream; |
| if (!parsed_stream.ParseFile(input_file)) { |
| std::cerr << "Error while parsing input file: " << input_file << std::endl; |
| return -1; |
| } |
| |
| std::unique_ptr<webrtc::test::RtpFileWriter> rtp_writer( |
| webrtc::test::RtpFileWriter::Create( |
| webrtc::test::RtpFileWriter::FileFormat::kRtpDump, output_file)); |
| |
| if (!rtp_writer.get()) { |
| std::cerr << "Error while opening output file: " << output_file |
| << std::endl; |
| return -1; |
| } |
| |
| std::cout << "Found " << parsed_stream.GetNumberOfEvents() |
| << " events in the input file." << std::endl; |
| int rtp_counter = 0, rtcp_counter = 0; |
| bool header_only = false; |
| for (size_t i = 0; i < parsed_stream.GetNumberOfEvents(); i++) { |
| // The parsed_stream will assert if the protobuf event is missing |
| // some required fields and we attempt to access them. We could consider |
| // a softer failure option, but it does not seem useful to generate |
| // RTP dumps based on broken event logs. |
| if (FLAG_rtp && |
| parsed_stream.GetEventType(i) == webrtc::ParsedRtcEventLog::RTP_EVENT) { |
| webrtc::test::RtpPacket packet; |
| webrtc::PacketDirection direction; |
| parsed_stream.GetRtpHeader(i, &direction, packet.data, &packet.length, |
| &packet.original_length); |
| if (packet.original_length > packet.length) |
| header_only = true; |
| packet.time_ms = parsed_stream.GetTimestamp(i) / 1000; |
| |
| webrtc::RtpUtility::RtpHeaderParser rtp_parser(packet.data, |
| packet.length); |
| |
| // TODO(terelius): Maybe add a flag to dump outgoing traffic instead? |
| if (direction == webrtc::kOutgoingPacket) |
| continue; |
| |
| webrtc::RTPHeader parsed_header; |
| rtp_parser.Parse(&parsed_header); |
| MediaType media_type = |
| parsed_stream.GetMediaType(parsed_header.ssrc, direction); |
| if (!FLAG_audio && media_type == MediaType::AUDIO) |
| continue; |
| if (!FLAG_video && media_type == MediaType::VIDEO) |
| continue; |
| if (!FLAG_data && media_type == MediaType::DATA) |
| continue; |
| if (strlen(FLAG_ssrc) > 0) { |
| const uint32_t packet_ssrc = |
| webrtc::ByteReader<uint32_t>::ReadBigEndian( |
| reinterpret_cast<const uint8_t*>(packet.data + 8)); |
| if (packet_ssrc != ssrc_filter) |
| continue; |
| } |
| |
| rtp_writer->WritePacket(&packet); |
| rtp_counter++; |
| } |
| if (FLAG_rtcp && parsed_stream.GetEventType(i) == |
| webrtc::ParsedRtcEventLog::RTCP_EVENT) { |
| webrtc::test::RtpPacket packet; |
| webrtc::PacketDirection direction; |
| parsed_stream.GetRtcpPacket(i, &direction, packet.data, &packet.length); |
| // For RTCP packets the original_length should be set to 0 in the |
| // RTPdump format. |
| packet.original_length = 0; |
| packet.time_ms = parsed_stream.GetTimestamp(i) / 1000; |
| |
| // TODO(terelius): Maybe add a flag to dump outgoing traffic instead? |
| if (direction == webrtc::kOutgoingPacket) |
| continue; |
| |
| // Note that |packet_ssrc| is the sender SSRC. An RTCP message may contain |
| // report blocks for many streams, thus several SSRCs and they doen't |
| // necessarily have to be of the same media type. |
| const uint32_t packet_ssrc = webrtc::ByteReader<uint32_t>::ReadBigEndian( |
| reinterpret_cast<const uint8_t*>(packet.data + 4)); |
| MediaType media_type = parsed_stream.GetMediaType(packet_ssrc, direction); |
| if (!FLAG_audio && media_type == MediaType::AUDIO) |
| continue; |
| if (!FLAG_video && media_type == MediaType::VIDEO) |
| continue; |
| if (!FLAG_data && media_type == MediaType::DATA) |
| continue; |
| if (strlen(FLAG_ssrc) > 0) { |
| if (packet_ssrc != ssrc_filter) |
| continue; |
| } |
| |
| rtp_writer->WritePacket(&packet); |
| rtcp_counter++; |
| } |
| } |
| std::cout << "Wrote " << rtp_counter << (header_only ? " header-only" : "") |
| << " RTP packets and " << rtcp_counter << " RTCP packets to the " |
| << "output file." << std::endl; |
| return 0; |
| } |
