Make FakeDecodeFromFile handle codec-internal CNG

webrtc/modules/audio_coding/neteq/tools/packet.cc

 /*
  *  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.
  */
 
 #include "webrtc/modules/audio_coding/neteq/tools/packet.h"
 
 #include <string.h>
 
 #include <memory>
 
+#include "webrtc/base/checks.h"
 #include "webrtc/modules/include/module_common_types.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_header_parser.h"
 
 namespace webrtc {
 namespace test {
 
 Packet::Packet(uint8_t* packet_memory,
                size_t allocated_bytes,
                double time_ms,
                const RtpHeaderParser& parser)
@@ skipping 108 matching lines @@
   bool valid_header = parser.Parse(
       payload_memory_.get(), static_cast<int>(packet_length_bytes_), &header_);
   assert(valid_header);
   if (!valid_header) {
     return false;
   }
   assert(header_.headerLength <= packet_length_bytes_);
   payload_ = &payload_memory_[header_.headerLength];
   assert(packet_length_bytes_ >= header_.headerLength);
   payload_length_bytes_ = packet_length_bytes_ - header_.headerLength;
+  RTC_CHECK_GE(virtual_packet_length_bytes_, packet_length_bytes_);
   assert(virtual_packet_length_bytes_ >= header_.headerLength);
   virtual_payload_length_bytes_ =
       virtual_packet_length_bytes_ - header_.headerLength;
   return true;
 }
 
 void Packet::CopyToHeader(RTPHeader* destination) const {
   destination->markerBit = header_.markerBit;
   destination->payloadType = header_.payloadType;
   destination->sequenceNumber = header_.sequenceNumber;
   destination->timestamp = header_.timestamp;
   destination->ssrc = header_.ssrc;
   destination->numCSRCs = header_.numCSRCs;
   destination->paddingLength = header_.paddingLength;
   destination->headerLength = header_.headerLength;
   destination->payload_type_frequency = header_.payload_type_frequency;
   memcpy(&destination->arrOfCSRCs,
          &header_.arrOfCSRCs,
          sizeof(header_.arrOfCSRCs));
   memcpy(
       &destination->extension, &header_.extension, sizeof(header_.extension));
 }
 
 }  // namespace test
 }  // namespace webrtc