Generalize FEC unit tests and rename GenerateFec. (pt. 3)

webrtc/test/fuzzers/producer_fec_fuzzer.cc

 /*
  *  Copyright (c) 2015 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.
  */
 
 #include <memory>
 
 #include "webrtc/base/checks.h"
 #include "webrtc/modules/rtp_rtcp/source/byte_io.h"
 #include "webrtc/modules/rtp_rtcp/source/fec_test_helper.h"
 #include "webrtc/modules/rtp_rtcp/source/producer_fec.h"
 
 namespace webrtc {
 
+namespace {
+constexpr uint8_t kFecPayloadType = 96;
+constexpr uint8_t kRedPayloadType = 97;
+}  // namespace
+
 void FuzzOneInput(const uint8_t* data, size_t size) {
   ProducerFec producer;
   size_t i = 0;
   if (size < 4)
     return;
   FecProtectionParams params = {
       data[i++] % 128, static_cast<int>(data[i++] % 10), kFecMaskBursty};
   producer.SetFecParameters(&params, 0);
   uint16_t seq_num = data[i++];
 
@@ skipping 18 matching lines @@
     const size_t num_fec_packets = producer.NumAvailableFecPackets();
     if (num_fec_packets > 0) {
       std::vector<std::unique_ptr<RedPacket>> fec_packets =
           producer.GetFecPacketsAsRed(kRedPayloadType, kFecPayloadType, 100,
                                       rtp_header_length);
       RTC_CHECK_EQ(num_fec_packets, fec_packets.size());
     }
   }
 }
 }  // namespace webrtc