codec2: fix CBR_FD framerate mode hook-up

Bug: 192501770
Change-Id: Icc3b822b64e754f08ebdeb16557612cc1b3ead11
diff --git a/media/codec2/sfplugin/utils/Codec2Mapper.cpp b/media/codec2/sfplugin/utils/Codec2Mapper.cpp
index 00bf84f..4d939fa 100644
--- a/media/codec2/sfplugin/utils/Codec2Mapper.cpp
+++ b/media/codec2/sfplugin/utils/Codec2Mapper.cpp
@@ -92,6 +92,7 @@
 
 ALookup<C2Config::bitrate_mode_t, int32_t> sBitrateModes = {
     { C2Config::BITRATE_CONST,      BITRATE_MODE_CBR },
+    { C2Config::BITRATE_CONST_SKIP_ALLOWED, BITRATE_MODE_CBR_FD },
     { C2Config::BITRATE_VARIABLE,   BITRATE_MODE_VBR },
     { C2Config::BITRATE_IGNORE,     BITRATE_MODE_CQ },
 };
diff --git a/media/libstagefright/include/media/stagefright/MediaCodecConstants.h b/media/libstagefright/include/media/stagefright/MediaCodecConstants.h
index bee96b1..ece643d 100644
--- a/media/libstagefright/include/media/stagefright/MediaCodecConstants.h
+++ b/media/libstagefright/include/media/stagefright/MediaCodecConstants.h
@@ -557,12 +557,14 @@
 }
 
 constexpr int32_t BITRATE_MODE_CBR = 2;
+constexpr int32_t BITRATE_MODE_CBR_FD = 3;
 constexpr int32_t BITRATE_MODE_CQ = 0;
 constexpr int32_t BITRATE_MODE_VBR = 1;
 
 inline static const char *asString_BitrateMode(int32_t i, const char *def = "??") {
     switch (i) {
         case BITRATE_MODE_CBR:  return "CBR";
+        case BITRATE_MODE_CBR_FD: return "CBR_FD";
         case BITRATE_MODE_CQ:   return "CQ";
         case BITRATE_MODE_VBR:  return "VBR";
         default:                return def;