Add pcap support to bwe tools. Allow filtering on SSRCs.

webrtc/test/rtp_file_reader.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.
  */
 #ifndef WEBRTC_TEST_RTP_FILE_READER_H_
 #define WEBRTC_TEST_RTP_FILE_READER_H_
 
+#include <set>
 #include <string>
 
 #include "webrtc/common_types.h"
 
 namespace webrtc {
 namespace test {
 
 struct RtpPacket {
   // Accommodate for 50 ms packets of 32 kHz PCM16 samples (3200 bytes) plus
   // some overhead.
   static const size_t kMaxPacketBufferSize = 3500;
   uint8_t data[kMaxPacketBufferSize];
   size_t length;
   // The length the packet had on wire. Will be different from |length| when
   // reading a header-only RTP dump.
   size_t original_length;
 
   uint32_t time_ms;
 };
 
 class RtpFileReader {
  public:
   enum FileFormat { kPcap, kRtpDump, kLengthPacketInterleaved };
 
   virtual ~RtpFileReader() {}
   static RtpFileReader* Create(FileFormat format,
                                const std::string& filename);
+  static RtpFileReader* Create(FileFormat format,
+                               const std::string& filename,
+                               const std::set<uint32_t>& ssrc_filter);
 
   virtual bool NextPacket(RtpPacket* packet) = 0;
 };
 }  // namespace test
 }  // namespace webrtc
 #endif  // WEBRTC_TEST_RTP_FILE_READER_H_