Moved Opus-specific payload splitting into AudioDecoderOpus.

webrtc/modules/audio_coding/neteq/payload_splitter.h

Index: webrtc/modules/audio_coding/neteq/payload_splitter.h
diff --git a/webrtc/modules/audio_coding/neteq/payload_splitter.h b/webrtc/modules/audio_coding/neteq/payload_splitter.h
index a3e1b1d91c76bd047995407d0f8d80932941e4a4..89c6b1b434de658ddc1217c5a40c5f4c1d8750d8 100644
--- a/webrtc/modules/audio_coding/neteq/payload_splitter.h
+++ b/webrtc/modules/audio_coding/neteq/payload_splitter.h
@@ -19,21 +19,11 @@ namespace webrtc {
 // Forward declarations.
 class DecoderDatabase;
 
-// This class handles splitting of payloads into smaller parts.
-
-// For RED and FEC the splitting is done internally. Other codecs' packets are
-// split by calling AudioDecoder::SplitPacket.
+// This class handles splitting of RED payloads into smaller parts.
+// Codec-specific packet splitting can be performed by
+// AudioDecoder::ParsePayload.
 class PayloadSplitter {
  public:
-  enum SplitterReturnCodes {
-    kOK = 0,
-    kNoSplit = 1,
-    kFrameSplitError = -2,
-    kUnknownPayloadType = -3,
-    kRedLengthMismatch = -4,
-    kFecSplitError = -5,
-  };
-
   PayloadSplitter() {}
 
   virtual ~PayloadSplitter() {}
@@ -44,17 +34,12 @@ class PayloadSplitter {
   // Note that all packets in |packet_list| must be RED payloads, i.e., have
   // RED headers according to RFC 2198 at the very beginning of the payload.
   // Returns kOK or an error.
-  virtual int SplitRed(PacketList* packet_list);
-
-  // Iterates through |packet_list| and, duplicate each audio payload that has
-  // FEC as new packet for redundant decoding. The decoder database is needed to
-  // get information about which payload type each packet contains.
-  virtual int SplitFec(PacketList* packet_list,
-                       DecoderDatabase* decoder_database);
+  virtual bool SplitRed(PacketList* packet_list);
 
   // Checks all packets in |packet_list|. Packets that are DTMF events or
   // comfort noise payloads are kept. Except that, only one single payload type
-  // is accepted. Any packet with another payload type is discarded.
+  // is accepted. Any packet with another payload type is discarded.  Returns
+  // the number of discarded packets.
   virtual int CheckRedPayloads(PacketList* packet_list,
                                const DecoderDatabase& decoder_database);