Rename simulcast SDP serializer

which is not a generic SDP serializer but only deals with the
simulcast SDP.

BUG=None

Change-Id: I6bed6ada28ad5b96f07fd7670ad3d635bd4bc732
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/320280
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Philipp Hancke <phancke@microsoft.com>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40761}

pc/BUILD.gn

@@ -764,11 +764,11 @@ rtc_source_set("peerconnection") {
     ":rtp_transmission_manager",
     ":sctp_data_channel",
     ":sdp_offer_answer",
-    ":sdp_serializer",
     ":sdp_state_provider",
     ":sdp_utils",
     ":session_description",
     ":simulcast_description",
+    ":simulcast_sdp_serializer",
     ":stream_collection",
     ":track_media_info_map",
     ":transceiver_list",
@@ -1259,11 +1259,11 @@ rtc_source_set("peer_connection") {
   ]
 }
 
-rtc_source_set("sdp_serializer") {
+rtc_source_set("simulcast_sdp_serializer") {
   visibility = [ ":*" ]
   sources = [
-    "sdp_serializer.cc",
-    "sdp_serializer.h",
+    "simulcast_sdp_serializer.cc",
+    "simulcast_sdp_serializer.h",
   ]
   deps = [
     ":session_description",
@@ -1383,9 +1383,9 @@ rtc_source_set("webrtc_sdp") {
   deps = [
     ":media_protocol_names",
     ":media_session",
-    ":sdp_serializer",
     ":session_description",
     ":simulcast_description",
+    ":simulcast_sdp_serializer",
     "../api:candidate",
     "../api:libjingle_peerconnection_api",
     "../api:rtc_error",
@@ -2341,7 +2341,7 @@ if (rtc_include_tests && !build_with_chromium) {
       "rtp_transceiver_unittest.cc",
       "sctp_utils_unittest.cc",
       "sdp_offer_answer_unittest.cc",
-      "sdp_serializer_unittest.cc",
+      "simulcast_sdp_serializer_unittest.cc",
       "test/fake_audio_capture_module_unittest.cc",
       "test/test_sdp_strings.h",
       "track_media_info_map_unittest.cc",
@@ -2383,10 +2383,10 @@ if (rtc_include_tests && !build_with_chromium) {
       ":sctp_data_channel",
       ":sctp_transport",
       ":sctp_utils",
-      ":sdp_serializer",
       ":sdp_utils",
       ":session_description",
       ":simulcast_description",
+      ":simulcast_sdp_serializer",
       ":stream_collection",
       ":track_media_info_map",
       ":transport_stats",

pc/simulcast_sdp_serializer.cc

@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "pc/sdp_serializer.h"
+#include "pc/simulcast_sdp_serializer.h"
 
 #include <map>
 #include <string>
@@ -181,7 +181,7 @@ webrtc::RTCError ParseRidPayloadList(const std::string& payload_list,
 
 }  // namespace
 
-std::string SdpSerializer::SerializeSimulcastDescription(
+std::string SimulcastSdpSerializer::SerializeSimulcastDescription(
     const cricket::SimulcastDescription& simulcast) const {
   rtc::StringBuilder sb;
   std::string delimiter;
@@ -210,7 +210,8 @@ std::string SdpSerializer::SerializeSimulcastDescription(
 // sc-id-paused = "~"
 // sc-id        = [sc-id-paused] rid-id
 // rid-id       = 1*(alpha-numeric / "-" / "_") ; see: I-D.ietf-mmusic-rid
-RTCErrorOr<SimulcastDescription> SdpSerializer::DeserializeSimulcastDescription(
+RTCErrorOr<SimulcastDescription>
+SimulcastSdpSerializer::DeserializeSimulcastDescription(
     absl::string_view string) const {
   std::vector<std::string> tokens;
   rtc::tokenize(std::string(string), kDelimiterSpaceChar, &tokens);
@@ -264,7 +265,7 @@ RTCErrorOr<SimulcastDescription> SdpSerializer::DeserializeSimulcastDescription(
   return std::move(simulcast);
 }
 
-std::string SdpSerializer::SerializeRidDescription(
+std::string SimulcastSdpSerializer::SerializeRidDescription(
     const RidDescription& rid_description) const {
   RTC_DCHECK(!rid_description.rid.empty());
   RTC_DCHECK(rid_description.direction == RidDirection::kSend ||
@@ -319,7 +320,7 @@ std::string SdpSerializer::SerializeRidDescription(
 // rid-param          = 1*(alpha-numeric / "-") [ "=" param-val ]
 // param-val          = *( %x20-58 / %x60-7E )
 //                      ; Any printable character except semicolon
-RTCErrorOr<RidDescription> SdpSerializer::DeserializeRidDescription(
+RTCErrorOr<RidDescription> SimulcastSdpSerializer::DeserializeRidDescription(
     absl::string_view string) const {
   std::vector<std::string> tokens;
   rtc::tokenize(std::string(string), kDelimiterSpaceChar, &tokens);

pc/simulcast_sdp_serializer.h

@@ -8,8 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef PC_SDP_SERIALIZER_H_
-#define PC_SDP_SERIALIZER_H_
+#ifndef PC_SIMULCAST_SDP_SERIALIZER_H_
+#define PC_SIMULCAST_SDP_SERIALIZER_H_
 
 #include <string>
 
@@ -21,19 +21,19 @@
 
 namespace webrtc {
 
-// This class should serialize components of the SDP (and not the SDP itself).
+// This class serializes simulcast components of the SDP.
 // Example:
 //     SimulcastDescription can be serialized and deserialized by this class.
 //     The serializer will know how to translate the data to spec-compliant
 //     format without knowing about the SDP attribute details (a=simulcast:)
 // Usage:
 //     Consider the SDP attribute for simulcast a=simulcast:<configuration>.
-//     The SDP serializtion code (webrtcsdp.h) should use `SdpSerializer` to
+//     The SDP serializtion code (webrtc_sdp.h) should use `SdpSerializer` to
 //     serialize and deserialize the <configuration> section.
 // This class will allow testing the serialization of components without
 // having to serialize the entire SDP while hiding implementation details
-// from callers of sdp serialization (webrtcsdp.h).
-class SdpSerializer {
+// from callers of sdp serialization (webrtc_sdp.h).
+class SimulcastSdpSerializer {
  public:
   // Serialization for the Simulcast description according to
   // https://tools.ietf.org/html/draft-ietf-mmusic-sdp-simulcast-13#section-5.1
@@ -58,4 +58,4 @@ class SdpSerializer {
 
 }  // namespace webrtc
 
-#endif  // PC_SDP_SERIALIZER_H_
+#endif  // PC_SIMULCAST_SDP_SERIALIZER_H_

pc/simulcast_sdp_serializer_unittest.cc

@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "pc/sdp_serializer.h"
+#include "pc/simulcast_sdp_serializer.h"
 
 #include <stddef.h>
 
@@ -102,7 +102,7 @@ class SimulcastSdpSerializerTest : public TestWithParam<const char*> {
   // `expected` - The expected output Simulcast to compare to.
   void TestDeserialization(const std::string& str,
                            const SimulcastDescription& expected) const {
-    SdpSerializer deserializer;
+    SimulcastSdpSerializer deserializer;
     auto result = deserializer.DeserializeSimulcastDescription(str);
     EXPECT_TRUE(result.ok());
     ExpectEqual(expected, result.value());
@@ -113,7 +113,7 @@ class SimulcastSdpSerializerTest : public TestWithParam<const char*> {
   // `expected` - The expected output string to compare to.
   void TestSerialization(const SimulcastDescription& simulcast,
                          const std::string& expected) const {
-    SdpSerializer serializer;
+    SimulcastSdpSerializer serializer;
     auto result = serializer.SerializeSimulcastDescription(simulcast);
     EXPECT_EQ(expected, result);
   }
@@ -214,7 +214,7 @@ TEST_F(SimulcastSdpSerializerTest, Deserialize_PausedStreams) {
 
 // Parameterized negative test case for deserialization with invalid inputs.
 TEST_P(SimulcastSdpSerializerTest, SimulcastDeserializationFailed) {
-  SdpSerializer deserializer;
+  SimulcastSdpSerializer deserializer;
   auto result = deserializer.DeserializeSimulcastDescription(GetParam());
   EXPECT_FALSE(result.ok());
 }
@@ -286,7 +286,7 @@ class RidDescriptionSdpSerializerTest : public TestWithParam<const char*> {
   // `expected` - The expected output RidDescription to compare to.
   void TestDeserialization(const std::string& str,
                            const RidDescription& expected) const {
-    SdpSerializer deserializer;
+    SimulcastSdpSerializer deserializer;
     auto result = deserializer.DeserializeRidDescription(str);
     EXPECT_TRUE(result.ok());
     ExpectEqual(expected, result.value());
@@ -297,7 +297,7 @@ class RidDescriptionSdpSerializerTest : public TestWithParam<const char*> {
   // `expected` - The expected output string to compare to.
   void TestSerialization(const RidDescription& rid_description,
                          const std::string& expected) const {
-    SdpSerializer serializer;
+    SimulcastSdpSerializer serializer;
     auto result = serializer.SerializeRidDescription(rid_description);
     EXPECT_EQ(expected, result);
   }
@@ -447,7 +447,7 @@ TEST_F(RidDescriptionSdpSerializerTest, Deserialize_AmbiguousCase) {
 
 // Parameterized negative test case for deserialization with invalid inputs.
 TEST_P(RidDescriptionSdpSerializerTest, RidDescriptionDeserializationFailed) {
-  SdpSerializer deserializer;
+  SimulcastSdpSerializer deserializer;
   auto result = deserializer.DeserializeRidDescription(GetParam());
   EXPECT_FALSE(result.ok());
 }

pc/webrtc_sdp.cc

@@ -54,9 +54,9 @@
 #include "p2p/base/transport_info.h"
 #include "pc/media_protocol_names.h"
 #include "pc/media_session.h"
-#include "pc/sdp_serializer.h"
 #include "pc/session_description.h"
 #include "pc/simulcast_description.h"
+#include "pc/simulcast_sdp_serializer.h"
 #include "rtc_base/arraysize.h"
 #include "rtc_base/checks.h"
 #include "rtc_base/helpers.h"
@@ -1601,7 +1601,7 @@ void BuildRtpContentAttributes(const MediaContentDescription* media_desc,
                                const cricket::MediaType media_type,
                                int msid_signaling,
                                std::string* message) {
-  SdpSerializer serializer;
+  SimulcastSdpSerializer serializer;
   rtc::StringBuilder os;
   // RFC 8285
   // a=extmap-allow-mixed
@@ -3049,7 +3049,7 @@ bool ParseContent(absl::string_view message,
   std::string ptime_as_string;
   std::vector<std::string> stream_ids;
   std::string track_id;
-  SdpSerializer deserializer;
+  SimulcastSdpSerializer deserializer;
   std::vector<RidDescription> rids;
   SimulcastDescription simulcast;