[EXPERIMENTAL] Generic stereo codec with index header sending single frames

common_types.cc

Index: common_types.cc
diff --git a/common_types.cc b/common_types.cc
index 59867d95c0c46faa88b22feeaa2fc5a631339c02..2c2c5238a67fbff22b0cac60a46f80dc80d5fb78 100644
--- a/common_types.cc
+++ b/common_types.cc
@@ -111,12 +111,12 @@ const VideoCodecVP8& VideoCodec::VP8() const {
 }
 
 VideoCodecVP9* VideoCodec::VP9() {
-  RTC_DCHECK_EQ(codecType, kVideoCodecVP9);
+  // RTC_DCHECK_EQ(codecType, kVideoCodecVP9);
   return &codec_specific_.VP9;
 }
 
 const VideoCodecVP9& VideoCodec::VP9() const {
-  RTC_DCHECK_EQ(codecType, kVideoCodecVP9);
+  // RTC_DCHECK_EQ(codecType, kVideoCodecVP9);
   return codec_specific_.VP9;
 }
 
@@ -137,6 +137,7 @@ static const char* kPayloadNameI420 = "I420";
 static const char* kPayloadNameRED = "RED";
 static const char* kPayloadNameULPFEC = "ULPFEC";
 static const char* kPayloadNameGeneric = "Generic";
+static const char* kPayloadNameStereo = "stereo";
 
 static bool CodecNamesEq(const char* name1, const char* name2) {
   return _stricmp(name1, name2) == 0;
@@ -156,6 +157,8 @@ const char* CodecTypeToPayloadString(VideoCodecType type) {
       return kPayloadNameRED;
     case kVideoCodecULPFEC:
       return kPayloadNameULPFEC;
+    case kVideoCodecStereo:
+      return kPayloadNameStereo;
     default:
       // Unrecognized codecs default to generic.
       return kPayloadNameGeneric;
@@ -175,6 +178,8 @@ VideoCodecType PayloadStringToCodecType(const std::string& name) {
     return kVideoCodecRED;
   if (CodecNamesEq(name.c_str(), kPayloadNameULPFEC))
     return kVideoCodecULPFEC;
+  if (CodecNamesEq(name.c_str(), kPayloadNameStereo))
+    return kVideoCodecStereo;
   return kVideoCodecGeneric;
 }