Re-enable PCAP reading in neteq_rtpplay

webrtc/modules/audio_coding/neteq/tools/rtp_file_source.h

 /*
  *  Copyright (c) 2014 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 16 matching lines @@
 namespace test {
 
 class RtpFileReader;
 
 class RtpFileSource : public PacketSource {
  public:
   // Creates an RtpFileSource reading from |file_name|. If the file cannot be
   // opened, or has the wrong format, NULL will be returned.
   static RtpFileSource* Create(const std::string& file_name);
 
+  // Checks whether a files is a valid RTP dump or PCAP (Wireshark) file.
+  static bool ValidRtpDump(const std::string& file_name);
+  static bool ValidPcap(const std::string& file_name);
+
   virtual ~RtpFileSource();
 
   // Registers an RTP header extension and binds it to |id|.
   virtual bool RegisterRtpHeaderExtension(RTPExtensionType type, uint8_t id);
 
   // Returns a pointer to the next packet. Returns NULL if end of file was
   // reached, or if a the data was corrupt.
   Packet* NextPacket() override;
 
  private:
   static const int kFirstLineLength = 40;
   static const int kRtpFileHeaderSize = 4 + 4 + 4 + 2 + 2;
   static const size_t kPacketHeaderSize = 8;
 
   RtpFileSource();
 
   bool OpenFile(const std::string& file_name);
 
   rtc::scoped_ptr<RtpFileReader> rtp_reader_;
   rtc::scoped_ptr<RtpHeaderParser> parser_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(RtpFileSource);
 };
 
 }  // namespace test
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_RTP_FILE_SOURCE_H_