Pass SdpAudioFormat through Channel, without converting to CodecInst

webrtc/modules/audio_coding/codecs/audio_format.cc

 /*
  *  Copyright (c) 2016 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 "webrtc/modules/audio_coding/codecs/audio_format.h"
 
 #include "webrtc/common_types.h"
 
 namespace webrtc {
 
 SdpAudioFormat::SdpAudioFormat(const SdpAudioFormat&) = default;
 SdpAudioFormat::SdpAudioFormat(SdpAudioFormat&&) = default;
 
 SdpAudioFormat::SdpAudioFormat(const char* name,
                                int clockrate_hz,
                                int num_channels)
     : name(name), clockrate_hz(clockrate_hz), num_channels(num_channels) {}
 
+SdpAudioFormat::SdpAudioFormat(const std::string& name,
+                               int clockrate_hz,
+                               int num_channels)
+    : name(name), clockrate_hz(clockrate_hz), num_channels(num_channels) {}
+
 SdpAudioFormat::SdpAudioFormat(const char* name,
                                int clockrate_hz,
                                int num_channels,
-                               Parameters&& param)
+                               const Parameters& param)
     : name(name),
       clockrate_hz(clockrate_hz),
       num_channels(num_channels),
-      parameters(std::move(param)) {}
+      parameters(param) {}
+
+SdpAudioFormat::SdpAudioFormat(const std::string& name,
+                               int clockrate_hz,
+                               int num_channels,
+                               const Parameters& param)
+    : name(name),
+      clockrate_hz(clockrate_hz),
+      num_channels(num_channels),
+      parameters(param) {}
 
 SdpAudioFormat::~SdpAudioFormat() = default;
 SdpAudioFormat& SdpAudioFormat::operator=(const SdpAudioFormat&) = default;
 SdpAudioFormat& SdpAudioFormat::operator=(SdpAudioFormat&&) = default;
 
 bool operator==(const SdpAudioFormat& a, const SdpAudioFormat& b) {
   return STR_CASE_CMP(a.name.c_str(), b.name.c_str()) == 0 &&
          a.clockrate_hz == b.clockrate_hz && a.num_channels == b.num_channels &&
          a.parameters == b.parameters;
 }
@@ skipping 14 matching lines @@
   const char* sep = "";
   for (const auto& kv : saf.parameters) {
     os << sep << kv.first << ": " << kv.second;
     sep = ", ";
   }
   os << "}}";
   return os;
 }
 
 }  // namespace webrtc