Remove unused non-standard RtpEncodingParameters members

Bug: webrtc:7580
Change-Id: Ic1a6e52f25eb35c797e669bffe8040ec84fec386
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/160415
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Commit-Queue: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29983}

api/rtp_parameters.h

@@ -380,30 +380,6 @@ struct RTC_EXPORT RtpEncodingParameters {
   // unset SSRC acts as a "wildcard" SSRC.
   absl::optional<uint32_t> ssrc;
 
-  // Can be used to reference a codec in the |codecs| member of the
-  // RtpParameters that contains this RtpEncodingParameters. If unset, the
-  // implementation will choose the first possible codec (if a sender), or
-  // prepare to receive any codec (for a receiver).
-  // TODO(deadbeef): Not implemented. Implementation of RtpSender will always
-  // choose the first codec from the list.
-  absl::optional<int> codec_payload_type;
-
-  // Specifies the FEC mechanism, if set.
-  // TODO(deadbeef): Not implemented. Current implementation will use whatever
-  // FEC codecs are available, including red+ulpfec.
-  absl::optional<RtpFecParameters> fec;
-
-  // Specifies the RTX parameters, if set.
-  // TODO(deadbeef): Not implemented with PeerConnection senders/receivers.
-  absl::optional<RtpRtxParameters> rtx;
-
-  // Only used for audio. If set, determines whether or not discontinuous
-  // transmission will be used, if an available codec supports it. If not
-  // set, the implementation default setting will be used.
-  // TODO(deadbeef): Not implemented. Current implementation will use a CN
-  // codec as long as it's present.
-  absl::optional<DtxStatus> dtx;
-
   // The relative bitrate priority of this encoding. Currently this is
   // implemented for the entire rtp sender by using the value of the first
   // encoding parameter.
@@ -421,14 +397,6 @@ struct RTC_EXPORT RtpEncodingParameters {
   // TODO(http://crbug.com/webrtc/8630): Implement this per encoding parameter.
   double network_priority = kDefaultBitratePriority;
 
-  // Indicates the preferred duration of media represented by a packet in
-  // milliseconds for this encoding. If set, this will take precedence over the
-  // ptime set in the RtpCodecParameters. This could happen if SDP negotiation
-  // creates a ptime for a specific codec, which is later changed in the
-  // RtpEncodingParameters by the application.
-  // TODO(bugs.webrtc.org/8819): Not implemented.
-  absl::optional<int> ptime;
-
   // If set, this represents the Transport Independent Application Specific
   // maximum bandwidth defined in RFC3890. If unset, there is no maximum
   // bitrate. Currently this is implemented for the entire rtp sender by using
@@ -443,7 +411,6 @@ struct RTC_EXPORT RtpEncodingParameters {
   absl::optional<int> max_bitrate_bps;
 
   // Specifies the minimum bitrate in bps for video.
-  // TODO(asapersson): Not implemented for ORTC API.
   absl::optional<int> min_bitrate_bps;
 
   // Specifies the maximum framerate in fps for video.
@@ -462,10 +429,6 @@ struct RTC_EXPORT RtpEncodingParameters {
   // For video, scale the resolution down by this factor.
   absl::optional<double> scale_resolution_down_by;
 
-  // Scale the framerate down by this factor.
-  // TODO(deadbeef): Not implemented.
-  absl::optional<double> scale_framerate_down_by;
-
   // For an RtpSender, set to true to cause this encoding to be encoded and
   // sent, and false for it not to be encoded and sent. This allows control
   // across multiple encodings of a sender for turning simulcast layers on and
@@ -478,24 +441,15 @@ struct RTC_EXPORT RtpEncodingParameters {
   // Called "encodingId" in ORTC.
   std::string rid;
 
-  // RIDs of encodings on which this layer depends.
-  // Called "dependencyEncodingIds" in ORTC spec.
-  // TODO(deadbeef): Not implemented.
-  std::vector<std::string> dependency_rids;
-
   bool operator==(const RtpEncodingParameters& o) const {
-    return ssrc == o.ssrc && codec_payload_type == o.codec_payload_type &&
-           fec == o.fec && rtx == o.rtx && dtx == o.dtx &&
-           bitrate_priority == o.bitrate_priority &&
-           network_priority == o.network_priority && ptime == o.ptime &&
+    return ssrc == o.ssrc && bitrate_priority == o.bitrate_priority &&
+           network_priority == o.network_priority &&
            max_bitrate_bps == o.max_bitrate_bps &&
            min_bitrate_bps == o.min_bitrate_bps &&
            max_framerate == o.max_framerate &&
            num_temporal_layers == o.num_temporal_layers &&
            scale_resolution_down_by == o.scale_resolution_down_by &&
-           scale_framerate_down_by == o.scale_framerate_down_by &&
-           active == o.active && rid == o.rid &&
-           dependency_rids == o.dependency_rids;
+           active == o.active && rid == o.rid;
   }
   bool operator!=(const RtpEncodingParameters& o) const {
     return !(*this == o);

pc/peer_connection_rtp_unittest.cc

@@ -1460,53 +1460,6 @@ TEST_F(PeerConnectionRtpTestUnifiedPlan,
                 .error()
                 .type());
   init.send_encodings = default_send_encodings;
-
-  init.send_encodings[0].codec_payload_type = 1;
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            caller->pc()
-                ->AddTransceiver(cricket::MEDIA_TYPE_AUDIO, init)
-                .error()
-                .type());
-  init.send_encodings = default_send_encodings;
-
-  init.send_encodings[0].fec = RtpFecParameters();
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            caller->pc()
-                ->AddTransceiver(cricket::MEDIA_TYPE_AUDIO, init)
-                .error()
-                .type());
-  init.send_encodings = default_send_encodings;
-
-  init.send_encodings[0].rtx = RtpRtxParameters();
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            caller->pc()
-                ->AddTransceiver(cricket::MEDIA_TYPE_AUDIO, init)
-                .error()
-                .type());
-  init.send_encodings = default_send_encodings;
-
-  init.send_encodings[0].dtx = DtxStatus::ENABLED;
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            caller->pc()
-                ->AddTransceiver(cricket::MEDIA_TYPE_AUDIO, init)
-                .error()
-                .type());
-  init.send_encodings = default_send_encodings;
-
-  init.send_encodings[0].ptime = 1;
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            caller->pc()
-                ->AddTransceiver(cricket::MEDIA_TYPE_AUDIO, init)
-                .error()
-                .type());
-  init.send_encodings = default_send_encodings;
-
-  init.send_encodings[0].dependency_rids.push_back("dummy_rid");
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            caller->pc()
-                ->AddTransceiver(cricket::MEDIA_TYPE_AUDIO, init)
-                .error()
-                .type());
 }
 
 // Test that AddTransceiver fails if trying to use invalid RTP encoding

pc/rtp_parameters_conversion.cc

@@ -234,17 +234,9 @@ RTCErrorOr<cricket::StreamParamsVec> ToCricketStreamParamsVec(
   }
   cricket::StreamParamsVec cricket_streams;
   const RtpEncodingParameters& encoding = encodings[0];
-  if (encoding.rtx && encoding.rtx->ssrc && !encoding.ssrc) {
-    LOG_AND_RETURN_ERROR(RTCErrorType::UNSUPPORTED_PARAMETER,
-                         "Setting an RTX SSRC explicitly while leaving the "
-                         "primary SSRC unset is not currently supported.");
-  }
   if (encoding.ssrc) {
     cricket::StreamParams stream_params;
     stream_params.add_ssrc(*encoding.ssrc);
-    if (encoding.rtx && encoding.rtx->ssrc) {
-      stream_params.AddFidSsrc(*encoding.ssrc, *encoding.rtx->ssrc);
-    }
     cricket_streams.push_back(std::move(stream_params));
   }
   return std::move(cricket_streams);
@@ -308,11 +300,6 @@ std::vector<RtpEncodingParameters> ToRtpEncodings(
   for (const cricket::StreamParams& stream_param : stream_params) {
     RtpEncodingParameters rtp_encoding;
     rtp_encoding.ssrc.emplace(stream_param.first_ssrc());
-    uint32_t rtx_ssrc = 0;
-    if (stream_param.GetFidSsrc(stream_param.first_ssrc(), &rtx_ssrc)) {
-      RtpRtxParameters rtx_param(rtx_ssrc);
-      rtp_encoding.rtx.emplace(rtx_param);
-    }
     rtp_encodings.push_back(std::move(rtp_encoding));
   }
   return rtp_encodings;

pc/rtp_parameters_conversion_unittest.cc

@@ -346,23 +346,6 @@ TEST(RtpParametersConversionTest, ToCricketStreamParamsVecSimple) {
   EXPECT_EQ(0xbaadf00d, result.value()[0].first_ssrc());
 }
 
-TEST(RtpParametersConversionTest, ToCricketStreamParamsVecWithRtx) {
-  std::vector<RtpEncodingParameters> encodings;
-  RtpEncodingParameters encoding;
-  // Test a corner case SSRC of 0.
-  encoding.ssrc.emplace(0u);
-  encoding.rtx.emplace(0xdeadbeef);
-  encodings.push_back(encoding);
-  auto result = ToCricketStreamParamsVec(encodings);
-  ASSERT_TRUE(result.ok());
-  ASSERT_EQ(1u, result.value().size());
-  EXPECT_EQ(2u, result.value()[0].ssrcs.size());
-  EXPECT_EQ(0u, result.value()[0].first_ssrc());
-  uint32_t rtx_ssrc = 0;
-  EXPECT_TRUE(result.value()[0].GetFidSsrc(0u, &rtx_ssrc));
-  EXPECT_EQ(0xdeadbeef, rtx_ssrc);
-}
-
 // No encodings should be accepted; an endpoint may want to prepare a
 // decoder/encoder without having something to receive/send yet.
 TEST(RtpParametersConversionTest, ToCricketStreamParamsVecNoEncodings) {
@@ -377,21 +360,11 @@ TEST(RtpParametersConversionTest, ToCricketStreamParamsVecNoEncodings) {
 TEST(RtpParametersConversionTest, ToCricketStreamParamsVecMissingSsrcs) {
   std::vector<RtpEncodingParameters> encodings = {{}};
   // Creates RtxParameters with empty SSRC.
-  encodings[0].rtx.emplace();
   auto result = ToCricketStreamParamsVec(encodings);
   ASSERT_TRUE(result.ok());
   EXPECT_EQ(0u, result.value().size());
 }
 
-// The media engine doesn't have a way of receiving an RTX SSRC that's known
-// with a primary SSRC that's unknown, so this should produce an error.
-TEST(RtpParametersConversionTest, ToStreamParamsWithPrimarySsrcSetAndRtxUnset) {
-  std::vector<RtpEncodingParameters> encodings = {{}};
-  encodings[0].rtx.emplace(0xdeadbeef);
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            ToCricketStreamParamsVec(encodings).error().type());
-}
-
 // TODO(deadbeef): Update this test when we support multiple encodings.
 TEST(RtpParametersConversionTest, ToCricketStreamParamsVecMultipleEncodings) {
   std::vector<RtpEncodingParameters> encodings = {{}, {}};
@@ -511,11 +484,9 @@ TEST(RtpParametersConversionTest, ToRtpEncodingsWithMultipleStreamParams) {
   cricket::StreamParamsVec streams;
   cricket::StreamParams stream1;
   stream1.ssrcs.push_back(1111u);
-  stream1.AddFidSsrc(1111u, 0xaaaaaaaa);
 
   cricket::StreamParams stream2;
   stream2.ssrcs.push_back(2222u);
-  stream2.AddFidSsrc(2222u, 0xaaaaaaab);
 
   streams.push_back(stream1);
   streams.push_back(stream2);
@@ -523,9 +494,7 @@ TEST(RtpParametersConversionTest, ToRtpEncodingsWithMultipleStreamParams) {
   auto rtp_encodings = ToRtpEncodings(streams);
   ASSERT_EQ(2u, rtp_encodings.size());
   EXPECT_EQ(1111u, rtp_encodings[0].ssrc);
-  EXPECT_EQ(0xaaaaaaaa, rtp_encodings[0].rtx->ssrc);
   EXPECT_EQ(2222u, rtp_encodings[1].ssrc);
-  EXPECT_EQ(0xaaaaaaab, rtp_encodings[1].rtx->ssrc);
 }
 
 TEST(RtpParametersConversionTest, ToAudioRtpCodecParameters) {

pc/rtp_sender.cc

@@ -38,20 +38,6 @@ int GenerateUniqueId() {
   return ++g_unique_id;
 }
 
-// Returns an true if any RtpEncodingParameters member that isn't implemented
-// contains a value.
-bool UnimplementedRtpEncodingParameterHasValue(
-    const RtpEncodingParameters& encoding_params) {
-  if (encoding_params.codec_payload_type.has_value() ||
-      encoding_params.fec.has_value() || encoding_params.rtx.has_value() ||
-      encoding_params.dtx.has_value() || encoding_params.ptime.has_value() ||
-      encoding_params.scale_framerate_down_by.has_value() ||
-      !encoding_params.dependency_rids.empty()) {
-    return true;
-  }
-  return false;
-}
-
 // Returns true if a "per-sender" encoding parameter contains a value that isn't
 // its default. Currently max_bitrate_bps and bitrate_priority both are
 // implemented "per-sender," meaning that these encoding parameters
@@ -109,9 +95,6 @@ bool UnimplementedRtpParameterHasValue(const RtpParameters& parameters) {
     return true;
   }
   for (size_t i = 0; i < parameters.encodings.size(); ++i) {
-    if (UnimplementedRtpEncodingParameterHasValue(parameters.encodings[i])) {
-      return true;
-    }
     // Encoding parameters that are per-sender should only contain value at
     // index 0.
     if (i != 0 &&

pc/rtp_sender_receiver_unittest.cc

@@ -968,46 +968,6 @@ TEST_F(RtpSenderReceiverTest, AudioSenderCantSetUnimplementedRtpParameters) {
   DestroyAudioRtpSender();
 }
 
-TEST_F(RtpSenderReceiverTest,
-       AudioSenderCantSetUnimplementedRtpEncodingParameters) {
-  CreateAudioRtpSender();
-  RtpParameters params = audio_rtp_sender_->GetParameters();
-  EXPECT_EQ(1u, params.encodings.size());
-
-  // Unimplemented RtpParameters: codec_payload_type, fec, rtx, dtx, ptime,
-  // scale_framerate_down_by, dependency_rids.
-  params.encodings[0].codec_payload_type = 1;
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            audio_rtp_sender_->SetParameters(params).type());
-  params = audio_rtp_sender_->GetParameters();
-
-  params.encodings[0].fec = RtpFecParameters();
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            audio_rtp_sender_->SetParameters(params).type());
-  params = audio_rtp_sender_->GetParameters();
-
-  params.encodings[0].rtx = RtpRtxParameters();
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            audio_rtp_sender_->SetParameters(params).type());
-  params = audio_rtp_sender_->GetParameters();
-
-  params.encodings[0].dtx = DtxStatus::ENABLED;
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            audio_rtp_sender_->SetParameters(params).type());
-  params = audio_rtp_sender_->GetParameters();
-
-  params.encodings[0].ptime = 1;
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            audio_rtp_sender_->SetParameters(params).type());
-  params = audio_rtp_sender_->GetParameters();
-
-  params.encodings[0].dependency_rids.push_back("dummy_rid");
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            audio_rtp_sender_->SetParameters(params).type());
-
-  DestroyAudioRtpSender();
-}
-
 TEST_F(RtpSenderReceiverTest, SetAudioMaxSendBitrate) {
   CreateAudioRtpSender();
 
@@ -1245,46 +1205,6 @@ TEST_F(RtpSenderReceiverTest, VideoSenderCantSetUnimplementedRtpParameters) {
   DestroyVideoRtpSender();
 }
 
-TEST_F(RtpSenderReceiverTest,
-       VideoSenderCantSetUnimplementedEncodingParameters) {
-  CreateVideoRtpSender();
-  RtpParameters params = video_rtp_sender_->GetParameters();
-  EXPECT_EQ(1u, params.encodings.size());
-
-  // Unimplemented RtpParameters: codec_payload_type, fec, rtx, dtx, ptime,
-  // scale_framerate_down_by, dependency_rids.
-  params.encodings[0].codec_payload_type = 1;
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            video_rtp_sender_->SetParameters(params).type());
-  params = video_rtp_sender_->GetParameters();
-
-  params.encodings[0].fec = RtpFecParameters();
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            video_rtp_sender_->SetParameters(params).type());
-  params = video_rtp_sender_->GetParameters();
-
-  params.encodings[0].rtx = RtpRtxParameters();
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            video_rtp_sender_->SetParameters(params).type());
-  params = video_rtp_sender_->GetParameters();
-
-  params.encodings[0].dtx = DtxStatus::ENABLED;
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            video_rtp_sender_->SetParameters(params).type());
-  params = video_rtp_sender_->GetParameters();
-
-  params.encodings[0].ptime = 1;
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            video_rtp_sender_->SetParameters(params).type());
-  params = video_rtp_sender_->GetParameters();
-
-  params.encodings[0].dependency_rids.push_back("dummy_rid");
-  EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-            video_rtp_sender_->SetParameters(params).type());
-
-  DestroyVideoRtpSender();
-}
-
 TEST_F(RtpSenderReceiverTest, VideoSenderCanSetScaleResolutionDownBy) {
   CreateVideoRtpSender();
 
@@ -1309,49 +1229,6 @@ TEST_F(RtpSenderReceiverTest, VideoSenderDetectInvalidScaleResolutionDownBy) {
   DestroyVideoRtpSender();
 }
 
-TEST_F(RtpSenderReceiverTest,
-       VideoSenderCantSetUnimplementedEncodingParametersWithSimulcast) {
-  CreateVideoRtpSenderWithSimulcast();
-  RtpParameters params = video_rtp_sender_->GetParameters();
-  EXPECT_EQ(kVideoSimulcastLayerCount, params.encodings.size());
-
-  // Unimplemented RtpParameters: codec_payload_type, fec, rtx, dtx, ptime,
-  // scale_framerate_down_by, dependency_rids.
-  for (size_t i = 0; i < params.encodings.size(); i++) {
-    params.encodings[i].codec_payload_type = 1;
-    EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-              video_rtp_sender_->SetParameters(params).type());
-    params = video_rtp_sender_->GetParameters();
-
-    params.encodings[i].fec = RtpFecParameters();
-    EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-              video_rtp_sender_->SetParameters(params).type());
-    params = video_rtp_sender_->GetParameters();
-
-    params.encodings[i].rtx = RtpRtxParameters();
-    EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-              video_rtp_sender_->SetParameters(params).type());
-    params = video_rtp_sender_->GetParameters();
-
-    params.encodings[i].dtx = DtxStatus::ENABLED;
-    EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-              video_rtp_sender_->SetParameters(params).type());
-    params = video_rtp_sender_->GetParameters();
-
-    params.encodings[i].ptime = 1;
-    EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-              video_rtp_sender_->SetParameters(params).type());
-    params = video_rtp_sender_->GetParameters();
-
-    params.encodings[i].dependency_rids.push_back("dummy_rid");
-    EXPECT_EQ(RTCErrorType::UNSUPPORTED_PARAMETER,
-              video_rtp_sender_->SetParameters(params).type());
-    params = video_rtp_sender_->GetParameters();
-  }
-
-  DestroyVideoRtpSender();
-}
-
 // A video sender can have multiple simulcast layers, in which case it will
 // contain multiple RtpEncodingParameters. This tests that if this is the case
 // (simulcast), then we can't set the bitrate_priority, or max_bitrate_bps