H.264 packetization mode 0 (try 3)

webrtc/media/base/codec.cc

 /*
  *  Copyright (c) 2004 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.
  */
 
@@ skipping 64 matching lines @@
          found != params_.end(); ++found) {
       if (*found == *iter) {
         return true;
       }
     }
   }
   return false;
 }
 
 Codec::Codec(int id, const std::string& name, int clockrate)
-    : id(id), name(name), clockrate(clockrate) {}
+    : id(id), name(name), clockrate(clockrate) {
+  SetDefaultParameters();
+}
 
 Codec::Codec() : id(0), clockrate(0) {}
 
 Codec::Codec(const Codec& c) = default;
 Codec::Codec(Codec&& c) = default;
 Codec::~Codec() = default;
 Codec& Codec::operator=(const Codec& c) = default;
 Codec& Codec::operator=(Codec&& c) = default;
 
 bool Codec::operator==(const Codec& c) const {
   return this->id == c.id &&  // id is reserved in objective-c
          name == c.name && clockrate == c.clockrate && params == c.params &&
          feedback_params == c.feedback_params;
 }
 
 bool Codec::Matches(const Codec& codec) const {
   // Match the codec id/name based on the typical static/dynamic name rules.
   // Matching is case-insensitive.
   const int kMaxStaticPayloadId = 95;
   return (id <= kMaxStaticPayloadId || codec.id <= kMaxStaticPayloadId)
              ? (id == codec.id)
              : (_stricmp(name.c_str(), codec.name.c_str()) == 0);
 }
 
+void Codec::SetDefaultParameters() {
+  if (_stricmp(kH264CodecName, name.c_str()) == 0) {
+    // TODO(magjed): Move setting these parameters into webrtc::H264Encoder
+    // instead.
+    SetParam(kH264FmtpProfileLevelId, kH264ProfileLevelConstrainedBaseline);
+    SetParam(kH264FmtpLevelAsymmetryAllowed, "1");
+    SetParam(kH264FmtpPacketizationMode, "1");
+  }
+}
+
 bool Codec::GetParam(const std::string& name, std::string* out) const {
   CodecParameterMap::const_iterator iter = params.find(name);
   if (iter == params.end())
     return false;
   *out = iter->second;
   return true;
 }
 
 bool Codec::GetParam(const std::string& name, int* out) const {
   CodecParameterMap::const_iterator iter = params.find(name);
@@ skipping 213 matching lines @@
     if (CodecNamesEq(codec.name.c_str(), kH264CodecName) &&
         !IsSameH264Profile(codec.params, supported_codec.params)) {
       continue;
     }
     return &supported_codec;
   }
   return nullptr;
 }
 
 }  // namespace cricket