api/webrtc_sdp_benchmark.cc - src - Git at Google


            
            /*

            
             *  Copyright (c) 2026 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 <cstdint>

            
            #include <memory>

            
            #include <string>


            #include "api/jsep.h"

            
            #include "api/webrtc_sdp.h"

            
            #include "benchmark/registration.h"

            
            #include "benchmark/state.h"

            
            #include "benchmark/utils.h"

            
            #include "rtc_base/checks.h"

            
            #include "rtc_base/strings/string_builder.h"


            namespace webrtc {

            
            namespace {


            constexpr char kFingerprint[] =

            
                "a=fingerprint:sha-1 "

            
                "4A:AD:B9:B1:3F:82:18:3B:54:02:12:DF:3E:5D:49:6B:19:E5:7C:AB\r\n";


            void AppendBenchmarkAudioSection(int index, StringBuilder& sb) {

            
              sb << "m=audio 2345 UDP/TLS/RTP/SAVPF 111 63 9 0 8 13 110 126\r\n"

            
                 << "c=IN IP4 74.125.127.126\r\n"

            
                 << "a=rtcp:2347 IN IP4 74.125.127.126\r\n"

            
                 << "a=candidate:a0+B/1 1 udp 2130706432 192.168.1.5 1234 typ host "

            
                    "generation 2\r\n"

            
                 << "a=candidate:a0+B/1 2 udp 2130706432 192.168.1.5 1235 typ host "

            
                    "generation 2\r\n"

            
                 << "a=candidate:a0+B/2 1 udp 2130706432 ::1 1238 typ host generation 2\r\n"

            
                 << "a=candidate:a0+B/3 1 udp 2130706432 74.125.127.126 2345 typ srflx "

            
                    "raddr 192.168.1.5 rport 2346 generation 2\r\n"

            
                 << "a=ice-ufrag:ufrag_a_" << index << "\r\n"

            
                 << "a=ice-pwd:pwd_audio_long_enough_" << index << "\r\n"

            
                 << "a=ice-options:trickle\r\n"

            
                 << kFingerprint << "a=setup:actpass\r\n"

            
                 << "a=mid:audio_" << index << "\r\n"

            
                 << "a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\n"

            
                 << "a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/"

            
                    "abs-send-time\r\n"

            
                 << "a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-"

            
                    "wide-cc-extensions-01\r\n"

            
                 << "a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:mid\r\n"

            
                 << "a=sendrecv\r\n"

            
                 << "a=msid:stream_" << index << " audio_track_" << index << "\r\n"

            
                 << "a=rtcp-mux\r\n"

            
                 << "a=rtcp-rsize\r\n"

            
                 << "a=rtpmap:111 opus/48000/2\r\n"

            
                 << "a=rtcp-fb:111 transport-cc\r\n"

            
                 << "a=fmtp:111 minptime=10;useinbandfec=1\r\n"

            
                 << "a=rtpmap:63 red/48000/2\r\n"

            
                 << "a=fmtp:63 111/111\r\n"

            
                 << "a=rtpmap:9 G722/8000\r\n"

            
                 << "a=rtpmap:0 PCMU/8000\r\n"

            
                 << "a=rtpmap:8 PCMA/8000\r\n"

            
                 << "a=rtpmap:13 CN/8000\r\n"

            
                 << "a=rtpmap:110 telephone-event/48000\r\n"

            
                 << "a=rtpmap:126 telephone-event/8000\r\n"

            
                 << "a=ssrc:" << (1000 + index) << " cname:cname_a_" << index << "\r\n";

            
            }


            void AppendBenchmarkVideoCodecs(StringBuilder& sb) {

            
              sb << "a=rtpmap:96 VP8/90000\r\n"

            
                 << "a=rtcp-fb:96 goog-remb\r\n"

            
                 << "a=rtcp-fb:96 transport-cc\r\n"

            
                 << "a=rtcp-fb:96 ccm fir\r\n"

            
                 << "a=rtcp-fb:96 nack\r\n"

            
                 << "a=rtcp-fb:96 nack pli\r\n"

            
                 << "a=rtpmap:97 rtx/90000\r\n"

            
                 << "a=fmtp:97 apt=96\r\n"

            
                 << "a=rtpmap:98 VP9/90000\r\n"

            
                 << "a=rtcp-fb:98 goog-remb\r\n"

            
                 << "a=rtcp-fb:98 transport-cc\r\n"

            
                 << "a=rtcp-fb:98 ccm fir\r\n"

            
                 << "a=rtcp-fb:98 nack\r\n"

            
                 << "a=rtcp-fb:98 nack pli\r\n"

            
                 << "a=fmtp:98 profile-id=0\r\n"

            
                 << "a=rtpmap:99 rtx/90000\r\n"

            
                 << "a=fmtp:99 apt=98\r\n"

            
                 << "a=rtpmap:100 VP9/90000\r\n"

            
                 << "a=rtcp-fb:100 goog-remb\r\n"

            
                 << "a=rtcp-fb:100 transport-cc\r\n"

            
                 << "a=rtcp-fb:100 ccm fir\r\n"

            
                 << "a=rtcp-fb:100 nack\r\n"

            
                 << "a=rtcp-fb:100 nack pli\r\n"

            
                 << "a=fmtp:100 profile-id=2\r\n"

            
                 << "a=rtpmap:101 rtx/90000\r\n"

            
                 << "a=fmtp:101 apt=100\r\n"

            
                 << "a=rtpmap:102 H264/90000\r\n"

            
                 << "a=rtcp-fb:102 goog-remb\r\n"

            
                 << "a=rtcp-fb:102 transport-cc\r\n"

            
                 << "a=rtcp-fb:102 ccm fir\r\n"

            
                 << "a=rtcp-fb:102 nack\r\n"

            
                 << "a=rtcp-fb:102 nack pli\r\n"

            
                 << "a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;"

            
                    "profile-level-id=42001f\r\n"

            
                 << "a=rtpmap:103 rtx/90000\r\n"

            
                 << "a=fmtp:103 apt=102\r\n"

            
                 << "a=rtpmap:104 AV1/90000\r\n"

            
                 << "a=rtcp-fb:104 goog-remb\r\n"

            
                 << "a=rtcp-fb:104 transport-cc\r\n"

            
                 << "a=rtcp-fb:104 ccm fir\r\n"

            
                 << "a=rtcp-fb:104 nack\r\n"

            
                 << "a=rtcp-fb:104 nack pli\r\n"

            
                 << "a=fmtp:104 level-idx=5;profile=0;tier=0\r\n"

            
                 << "a=rtpmap:105 rtx/90000\r\n"

            
                 << "a=fmtp:105 apt=104\r\n";

            
            }


            void AppendBenchmarkVideoSection(int index, StringBuilder& sb) {

            
              sb << "m=video 3457 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 102 103 104 105\r\n"

            
                 << "c=IN IP4 74.125.224.39\r\n"

            
                 << "a=rtcp:3456 IN IP4 74.125.224.39\r\n"

            
                 << "a=candidate:a0+B/1 1 udp 2130706432 192.168.1.5 1237 typ host "

            
                    "generation 2\r\n"

            
                 << "a=candidate:a0+B/1 2 udp 2130706432 192.168.1.5 1236 typ host "

            
                    "generation 2\r\n"

            
                 << "a=candidate:a0+B/2 1 udp 2130706432 ::1 1241 typ host generation 2\r\n"

            
                 << "a=candidate:a0+B/4 1 udp 2130706432 74.125.224.39 3457 typ relay "

            
                    "generation 2\r\n"

            
                 << "a=ice-ufrag:ufrag_v_" << index << "\r\n"

            
                 << "a=ice-pwd:pwd_video_long_enough_" << index << "\r\n"

            
                 << "a=ice-options:trickle\r\n"

            
                 << kFingerprint << "a=setup:actpass\r\n"

            
                 << "a=mid:video_" << index << "\r\n"

            
                 << "a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/"

            
                    "abs-send-time\r\n"

            
                 << "a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-"

            
                    "wide-cc-extensions-01\r\n"

            
                 << "a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:mid\r\n"

            
                 << "a=extmap:5 urn:ietf:params:rtp-hdrext:toffset\r\n"

            
                 << "a=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/"

            
                    "playout-delay\r\n"

            
                 << "a=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/"

            
                    "video-content-type\r\n"

            
                 << "a=extmap:8 http://www.webrtc.org/experiments/rtp-hdrext/"

            
                    "video-timing\r\n"

            
                 << "a=extmap:9 http://www.webrtc.org/experiments/rtp-hdrext/"

            
                    "color-space\r\n"

            
                 << "a=extmap:10 urn:3gpp:video-orientation\r\n"

            
                 << "a=sendrecv\r\n"

            
                 << "a=msid:stream_" << index << " video_track_" << index << "\r\n"

            
                 << "a=rtcp-mux\r\n"

            
                 << "a=rtcp-rsize\r\n";

            
              AppendBenchmarkVideoCodecs(sb);

            
              uint32_t ssrc1 = 2000 + index * 2;

            
              uint32_t ssrc2 = ssrc1 + 1;

            
              sb << "a=ssrc-group:FID " << ssrc1 << " " << ssrc2 << "\r\n"

            
                 << "a=ssrc:" << ssrc1 << " cname:cname_v_" << index << "\r\n"

            
                 << "a=ssrc:" << ssrc2 << " cname:cname_v_" << index << "\r\n"

            
                 << "a=rid:f send\r\n"

            
                 << "a=rid:h send\r\n"

            
                 << "a=rid:q send\r\n"

            
                 << "a=simulcast:send f;h;q\r\n";

            
            }


            std::string CreateBenchmarkUnifiedPlanSdp(int num_av_pairs, bool include_data) {

            
              StringBuilder sb;

            
              sb << "v=0\r\n"

            
                 << "o=- 18446744069414584320 2 IN IP4 127.0.0.1\r\n"

            
                 << "s=-\r\n"

            
                 << "t=0 0\r\n"

            
                 << "a=extmap-allow-mixed\r\n"

            
                 << "a=group:BUNDLE";

            
              for (int i = 0; i < num_av_pairs; ++i) {

            
                sb << " audio_" << i << " video_" << i;

            
              }

            
              if (include_data) {

            
                sb << " data_0";

            
              }

            
              sb << "\r\n"

            
                 << "a=msid-semantic: WMS\r\n";

            
              for (int i = 0; i < num_av_pairs; ++i) {

            
                AppendBenchmarkAudioSection(i, sb);

            
                AppendBenchmarkVideoSection(i, sb);

            
              }

            
              if (include_data) {

            
                sb << "m=application 9 UDP/DTLS/SCTP webrtc-datachannel\r\n"

            
                   << "c=IN IP4 0.0.0.0\r\n"

            
                   << "a=ice-ufrag:ufrag_data\r\n"

            
                   << "a=ice-pwd:pwd_data_long_enough\r\n"

            
                   << kFingerprint << "a=setup:actpass\r\n"

            
                   << "a=mid:data_0\r\n"

            
                   << "a=sctp-port:5000\r\n"

            
                   << "a=max-message-size:262144\r\n";

            
              }

            
              return sb.Release();

            
            }


            void BM_SdpDeserializeSmallUnifiedPlan(benchmark::State& state) {

            
              const std::string sdp =

            
                  CreateBenchmarkUnifiedPlanSdp(/*num_av_pairs=*/1, /*include_data=*/true);

            
              for (auto s : state) {

            
                std::unique_ptr<SessionDescriptionInterface> desc =

            
                    SdpDeserialize(SdpType::kOffer, sdp);

            
                benchmark::DoNotOptimize(desc);

            
              }

            
            }


            void BM_SdpSerializeSmallUnifiedPlan(benchmark::State& state) {

            
              const std::string sdp =

            
                  CreateBenchmarkUnifiedPlanSdp(/*num_av_pairs=*/1, /*include_data=*/true);

            
              std::unique_ptr<SessionDescriptionInterface> desc =

            
                  SdpDeserialize(SdpType::kOffer, sdp);

            
              RTC_CHECK(desc);

            
              for (auto s : state) {

            
                std::string serialized = SdpSerialize(*desc);

            
                benchmark::DoNotOptimize(serialized);

            
              }

            
            }


            void BM_SdpDeserializeLargeUnifiedPlan(benchmark::State& state) {

            
              const std::string sdp = CreateBenchmarkUnifiedPlanSdp(/*num_av_pairs=*/25,

            
                                                                    /*include_data=*/false);

            
              for (auto s : state) {

            
                std::unique_ptr<SessionDescriptionInterface> desc =

            
                    SdpDeserialize(SdpType::kOffer, sdp);

            
                benchmark::DoNotOptimize(desc);

            
              }

            
            }


            void BM_SdpSerializeLargeUnifiedPlan(benchmark::State& state) {

            
              const std::string sdp = CreateBenchmarkUnifiedPlanSdp(/*num_av_pairs=*/25,

            
                                                                    /*include_data=*/false);

            
              std::unique_ptr<SessionDescriptionInterface> desc =

            
                  SdpDeserialize(SdpType::kOffer, sdp);

            
              RTC_CHECK(desc);

            
              for (auto s : state) {

            
                std::string serialized = SdpSerialize(*desc);

            
                benchmark::DoNotOptimize(serialized);

            
              }

            
            }


            BENCHMARK(BM_SdpDeserializeSmallUnifiedPlan);

            
            BENCHMARK(BM_SdpSerializeSmallUnifiedPlan);

            
            BENCHMARK(BM_SdpDeserializeLargeUnifiedPlan);

            
            BENCHMARK(BM_SdpSerializeLargeUnifiedPlan);


            }  // namespace

            
            }  // namespace webrtc
	/*
	* Copyright (c) 2026 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 <cstdint>
	#include <memory>
	#include <string>

	#include "api/jsep.h"
	#include "api/webrtc_sdp.h"
	#include "benchmark/registration.h"
	#include "benchmark/state.h"
	#include "benchmark/utils.h"
	#include "rtc_base/checks.h"
	#include "rtc_base/strings/string_builder.h"

	namespace webrtc {
	namespace {

	constexpr char kFingerprint[] =
	"a=fingerprint:sha-1 "
	"4A:AD:B9:B1:3F:82:18:3B:54:02:12:DF:3E:5D:49:6B:19:E5:7C:AB\r\n";

	void AppendBenchmarkAudioSection(int index, StringBuilder& sb) {
	sb << "m=audio 2345 UDP/TLS/RTP/SAVPF 111 63 9 0 8 13 110 126\r\n"
	<< "c=IN IP4 74.125.127.126\r\n"
	<< "a=rtcp:2347 IN IP4 74.125.127.126\r\n"
	<< "a=candidate:a0+B/1 1 udp 2130706432 192.168.1.5 1234 typ host "
	"generation 2\r\n"
	<< "a=candidate:a0+B/1 2 udp 2130706432 192.168.1.5 1235 typ host "
	"generation 2\r\n"
	<< "a=candidate:a0+B/2 1 udp 2130706432 ::1 1238 typ host generation 2\r\n"
	<< "a=candidate:a0+B/3 1 udp 2130706432 74.125.127.126 2345 typ srflx "
	"raddr 192.168.1.5 rport 2346 generation 2\r\n"
	<< "a=ice-ufrag:ufrag_a_" << index << "\r\n"
	<< "a=ice-pwd:pwd_audio_long_enough_" << index << "\r\n"
	<< "a=ice-options:trickle\r\n"
	<< kFingerprint << "a=setup:actpass\r\n"
	<< "a=mid:audio_" << index << "\r\n"
	<< "a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\n"
	<< "a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/"
	"abs-send-time\r\n"
	<< "a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-"
	"wide-cc-extensions-01\r\n"
	<< "a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:mid\r\n"
	<< "a=sendrecv\r\n"
	<< "a=msid:stream_" << index << " audio_track_" << index << "\r\n"
	<< "a=rtcp-mux\r\n"
	<< "a=rtcp-rsize\r\n"
	<< "a=rtpmap:111 opus/48000/2\r\n"
	<< "a=rtcp-fb:111 transport-cc\r\n"
	<< "a=fmtp:111 minptime=10;useinbandfec=1\r\n"
	<< "a=rtpmap:63 red/48000/2\r\n"
	<< "a=fmtp:63 111/111\r\n"
	<< "a=rtpmap:9 G722/8000\r\n"
	<< "a=rtpmap:0 PCMU/8000\r\n"
	<< "a=rtpmap:8 PCMA/8000\r\n"
	<< "a=rtpmap:13 CN/8000\r\n"
	<< "a=rtpmap:110 telephone-event/48000\r\n"
	<< "a=rtpmap:126 telephone-event/8000\r\n"
	<< "a=ssrc:" << (1000 + index) << " cname:cname_a_" << index << "\r\n";
	}

	void AppendBenchmarkVideoCodecs(StringBuilder& sb) {
	sb << "a=rtpmap:96 VP8/90000\r\n"
	<< "a=rtcp-fb:96 goog-remb\r\n"
	<< "a=rtcp-fb:96 transport-cc\r\n"
	<< "a=rtcp-fb:96 ccm fir\r\n"
	<< "a=rtcp-fb:96 nack\r\n"
	<< "a=rtcp-fb:96 nack pli\r\n"
	<< "a=rtpmap:97 rtx/90000\r\n"
	<< "a=fmtp:97 apt=96\r\n"
	<< "a=rtpmap:98 VP9/90000\r\n"
	<< "a=rtcp-fb:98 goog-remb\r\n"
	<< "a=rtcp-fb:98 transport-cc\r\n"
	<< "a=rtcp-fb:98 ccm fir\r\n"
	<< "a=rtcp-fb:98 nack\r\n"
	<< "a=rtcp-fb:98 nack pli\r\n"
	<< "a=fmtp:98 profile-id=0\r\n"
	<< "a=rtpmap:99 rtx/90000\r\n"
	<< "a=fmtp:99 apt=98\r\n"
	<< "a=rtpmap:100 VP9/90000\r\n"
	<< "a=rtcp-fb:100 goog-remb\r\n"
	<< "a=rtcp-fb:100 transport-cc\r\n"
	<< "a=rtcp-fb:100 ccm fir\r\n"
	<< "a=rtcp-fb:100 nack\r\n"
	<< "a=rtcp-fb:100 nack pli\r\n"
	<< "a=fmtp:100 profile-id=2\r\n"
	<< "a=rtpmap:101 rtx/90000\r\n"
	<< "a=fmtp:101 apt=100\r\n"
	<< "a=rtpmap:102 H264/90000\r\n"
	<< "a=rtcp-fb:102 goog-remb\r\n"
	<< "a=rtcp-fb:102 transport-cc\r\n"
	<< "a=rtcp-fb:102 ccm fir\r\n"
	<< "a=rtcp-fb:102 nack\r\n"
	<< "a=rtcp-fb:102 nack pli\r\n"
	<< "a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;"
	"profile-level-id=42001f\r\n"
	<< "a=rtpmap:103 rtx/90000\r\n"
	<< "a=fmtp:103 apt=102\r\n"
	<< "a=rtpmap:104 AV1/90000\r\n"
	<< "a=rtcp-fb:104 goog-remb\r\n"
	<< "a=rtcp-fb:104 transport-cc\r\n"
	<< "a=rtcp-fb:104 ccm fir\r\n"
	<< "a=rtcp-fb:104 nack\r\n"
	<< "a=rtcp-fb:104 nack pli\r\n"
	<< "a=fmtp:104 level-idx=5;profile=0;tier=0\r\n"
	<< "a=rtpmap:105 rtx/90000\r\n"
	<< "a=fmtp:105 apt=104\r\n";
	}

	void AppendBenchmarkVideoSection(int index, StringBuilder& sb) {
	sb << "m=video 3457 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 102 103 104 105\r\n"
	<< "c=IN IP4 74.125.224.39\r\n"
	<< "a=rtcp:3456 IN IP4 74.125.224.39\r\n"
	<< "a=candidate:a0+B/1 1 udp 2130706432 192.168.1.5 1237 typ host "
	"generation 2\r\n"
	<< "a=candidate:a0+B/1 2 udp 2130706432 192.168.1.5 1236 typ host "
	"generation 2\r\n"
	<< "a=candidate:a0+B/2 1 udp 2130706432 ::1 1241 typ host generation 2\r\n"
	<< "a=candidate:a0+B/4 1 udp 2130706432 74.125.224.39 3457 typ relay "
	"generation 2\r\n"
	<< "a=ice-ufrag:ufrag_v_" << index << "\r\n"
	<< "a=ice-pwd:pwd_video_long_enough_" << index << "\r\n"
	<< "a=ice-options:trickle\r\n"
	<< kFingerprint << "a=setup:actpass\r\n"
	<< "a=mid:video_" << index << "\r\n"
	<< "a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/"
	"abs-send-time\r\n"
	<< "a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-"
	"wide-cc-extensions-01\r\n"
	<< "a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:mid\r\n"
	<< "a=extmap:5 urn:ietf:params:rtp-hdrext:toffset\r\n"
	<< "a=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/"
	"playout-delay\r\n"
	<< "a=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/"
	"video-content-type\r\n"
	<< "a=extmap:8 http://www.webrtc.org/experiments/rtp-hdrext/"
	"video-timing\r\n"
	<< "a=extmap:9 http://www.webrtc.org/experiments/rtp-hdrext/"
	"color-space\r\n"
	<< "a=extmap:10 urn:3gpp:video-orientation\r\n"
	<< "a=sendrecv\r\n"
	<< "a=msid:stream_" << index << " video_track_" << index << "\r\n"
	<< "a=rtcp-mux\r\n"
	<< "a=rtcp-rsize\r\n";
	AppendBenchmarkVideoCodecs(sb);
	uint32_t ssrc1 = 2000 + index * 2;
	uint32_t ssrc2 = ssrc1 + 1;
	sb << "a=ssrc-group:FID " << ssrc1 << " " << ssrc2 << "\r\n"
	<< "a=ssrc:" << ssrc1 << " cname:cname_v_" << index << "\r\n"
	<< "a=ssrc:" << ssrc2 << " cname:cname_v_" << index << "\r\n"
	<< "a=rid:f send\r\n"
	<< "a=rid:h send\r\n"
	<< "a=rid:q send\r\n"
	<< "a=simulcast:send f;h;q\r\n";
	}

	std::string CreateBenchmarkUnifiedPlanSdp(int num_av_pairs, bool include_data) {
	StringBuilder sb;
	sb << "v=0\r\n"
	<< "o=- 18446744069414584320 2 IN IP4 127.0.0.1\r\n"
	<< "s=-\r\n"
	<< "t=0 0\r\n"
	<< "a=extmap-allow-mixed\r\n"
	<< "a=group:BUNDLE";
	for (int i = 0; i < num_av_pairs; ++i) {
	sb << " audio_" << i << " video_" << i;
	}
	if (include_data) {
	sb << " data_0";
	}
	sb << "\r\n"
	<< "a=msid-semantic: WMS\r\n";
	for (int i = 0; i < num_av_pairs; ++i) {
	AppendBenchmarkAudioSection(i, sb);
	AppendBenchmarkVideoSection(i, sb);
	}
	if (include_data) {
	sb << "m=application 9 UDP/DTLS/SCTP webrtc-datachannel\r\n"
	<< "c=IN IP4 0.0.0.0\r\n"
	<< "a=ice-ufrag:ufrag_data\r\n"
	<< "a=ice-pwd:pwd_data_long_enough\r\n"
	<< kFingerprint << "a=setup:actpass\r\n"
	<< "a=mid:data_0\r\n"
	<< "a=sctp-port:5000\r\n"
	<< "a=max-message-size:262144\r\n";
	}
	return sb.Release();
	}

	void BM_SdpDeserializeSmallUnifiedPlan(benchmark::State& state) {
	const std::string sdp =
	CreateBenchmarkUnifiedPlanSdp(/num_av_pairs=/1, /include_data=/true);
	for (auto s : state) {
	std::unique_ptr<SessionDescriptionInterface> desc =
	SdpDeserialize(SdpType::kOffer, sdp);
	benchmark::DoNotOptimize(desc);
	}
	}

	void BM_SdpSerializeSmallUnifiedPlan(benchmark::State& state) {
	const std::string sdp =
	CreateBenchmarkUnifiedPlanSdp(/num_av_pairs=/1, /include_data=/true);
	std::unique_ptr<SessionDescriptionInterface> desc =
	SdpDeserialize(SdpType::kOffer, sdp);
	RTC_CHECK(desc);
	for (auto s : state) {
	std::string serialized = SdpSerialize(*desc);
	benchmark::DoNotOptimize(serialized);
	}
	}

	void BM_SdpDeserializeLargeUnifiedPlan(benchmark::State& state) {
	const std::string sdp = CreateBenchmarkUnifiedPlanSdp(/num_av_pairs=/25,
	/include_data=/false);
	for (auto s : state) {
	std::unique_ptr<SessionDescriptionInterface> desc =
	SdpDeserialize(SdpType::kOffer, sdp);
	benchmark::DoNotOptimize(desc);
	}
	}

	void BM_SdpSerializeLargeUnifiedPlan(benchmark::State& state) {
	const std::string sdp = CreateBenchmarkUnifiedPlanSdp(/num_av_pairs=/25,
	/include_data=/false);
	std::unique_ptr<SessionDescriptionInterface> desc =
	SdpDeserialize(SdpType::kOffer, sdp);
	RTC_CHECK(desc);
	for (auto s : state) {
	std::string serialized = SdpSerialize(*desc);
	benchmark::DoNotOptimize(serialized);
	}
	}

	BENCHMARK(BM_SdpDeserializeSmallUnifiedPlan);
	BENCHMARK(BM_SdpSerializeSmallUnifiedPlan);
	BENCHMARK(BM_SdpDeserializeLargeUnifiedPlan);
	BENCHMARK(BM_SdpSerializeLargeUnifiedPlan);

	} // namespace
	} // namespace webrtc