Let PacketSource::NextPacket() return an std::unique_ptr

webrtc/modules/audio_coding/neteq/tools/constant_pcm_packet_source.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.
  */
 
@@ skipping 17 matching lines @@
       samples_per_ms_(sample_rate_hz / 1000),
       next_arrival_time_ms_(0.0),
       payload_type_(payload_type),
       seq_number_(0),
       timestamp_(0),
       payload_ssrc_(0xABCD1234) {
   size_t encoded_len = WebRtcPcm16b_Encode(&sample_value, 1, encoded_sample_);
   RTC_CHECK_EQ(2U, encoded_len);
 }
 
-Packet* ConstantPcmPacketSource::NextPacket() {
+std::unique_ptr<Packet> ConstantPcmPacketSource::NextPacket() {
   RTC_CHECK_GT(packet_len_bytes_, kHeaderLenBytes);
   uint8_t* packet_memory = new uint8_t[packet_len_bytes_];
   // Fill the payload part of the packet memory with the pre-encoded value.
   for (unsigned i = 0; i < 2 * payload_len_samples_; ++i)
     packet_memory[kHeaderLenBytes + i] = encoded_sample_[i % 2];
   WriteHeader(packet_memory);
   // |packet| assumes ownership of |packet_memory|.
-  Packet* packet =
-      new Packet(packet_memory, packet_len_bytes_, next_arrival_time_ms_);
+  std::unique_ptr<Packet> packet(
+      new Packet(packet_memory, packet_len_bytes_, next_arrival_time_ms_));
   next_arrival_time_ms_ += payload_len_samples_ / samples_per_ms_;
   return packet;
 }
 
 void ConstantPcmPacketSource::WriteHeader(uint8_t* packet_memory) {
   packet_memory[0] = 0x80;
   packet_memory[1] = static_cast<uint8_t>(payload_type_);
   packet_memory[2] = seq_number_ >> 8;
   packet_memory[3] = seq_number_ & 0xFF;
   packet_memory[4] = timestamp_ >> 24;
   packet_memory[5] = (timestamp_ >> 16) & 0xFF;
   packet_memory[6] = (timestamp_ >> 8) & 0xFF;
   packet_memory[7] = timestamp_ & 0xFF;
   packet_memory[8] = payload_ssrc_ >> 24;
   packet_memory[9] = (payload_ssrc_ >> 16) & 0xFF;
   packet_memory[10] = (payload_ssrc_ >> 8) & 0xFF;
   packet_memory[11] = payload_ssrc_ & 0xFF;
   ++seq_number_;
   timestamp_ += static_cast<uint32_t>(payload_len_samples_);
 }
 
 }  // namespace test
 }  // namespace webrtc