Rename neteq4 folder to neteq

Keep the old neteq4/audio_decoder_unittests.isolate while waiting for
a hard-coded reference to change.

This CL effectively reverts r6257 "Rename neteq4 folder to neteq".

BUG=2996
TBR=tina.legrand@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/21629004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6367 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/neteq/tools/packet.h b/webrtc/modules/audio_coding/neteq/tools/packet.h
new file mode 100644
index 0000000..eb8ce28
--- /dev/null
+++ b/webrtc/modules/audio_coding/neteq/tools/packet.h
@@ -0,0 +1,117 @@
+/*
+ *  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_MODULES_AUDIO_CODING_NETEQ_TOOLS_PACKET_H_
+#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_PACKET_H_
+
+#include <list>
+
+#include "webrtc/base/constructormagic.h"
+#include "webrtc/common_types.h"
+#include "webrtc/system_wrappers/interface/scoped_ptr.h"
+#include "webrtc/typedefs.h"
+
+namespace webrtc {
+
+class RtpHeaderParser;
+
+namespace test {
+
+// Class for handling RTP packets in test applications.
+class Packet {
+ public:
+  // Creates a packet, with the packet payload (including header bytes) in
+  // |packet_memory|. The length of |packet_memory| is |allocated_bytes|.
+  // The new object assumes ownership of |packet_memory| and will delete it
+  // when the Packet object is deleted. The |time_ms| is an extra time
+  // associated with this packet, typically used to denote arrival time.
+  // The first bytes in |packet_memory| will be parsed using |parser|.
+  Packet(uint8_t* packet_memory,
+         size_t allocated_bytes,
+         double time_ms,
+         const RtpHeaderParser& parser);
+
+  // Same as above, but with the extra argument |virtual_packet_length_bytes|.
+  // This is typically used when reading RTP dump files that only contain the
+  // RTP headers, and no payload (a.k.a RTP dummy files or RTP light). The
+  // |virtual_packet_length_bytes| tells what size the packet had on wire,
+  // including the now discarded payload, whereas |allocated_bytes| is the
+  // length of the remaining payload (typically only the RTP header).
+  Packet(uint8_t* packet_memory,
+         size_t allocated_bytes,
+         size_t virtual_packet_length_bytes,
+         double time_ms,
+         const RtpHeaderParser& parser);
+
+  // The following two constructors are the same as above, but without a
+  // parser. Note that when the object is constructed using any of these
+  // methods, the header will be parsed using a default RtpHeaderParser object.
+  // In particular, RTP header extensions won't be parsed.
+  Packet(uint8_t* packet_memory, size_t allocated_bytes, double time_ms);
+
+  Packet(uint8_t* packet_memory,
+         size_t allocated_bytes,
+         size_t virtual_packet_length_bytes,
+         double time_ms);
+
+  virtual ~Packet() {}
+
+  // Parses the first bytes of the RTP payload, interpreting them as RED headers
+  // according to RFC 2198. The headers will be inserted into |headers|. The
+  // caller of the method assumes ownership of the objects in the list, and
+  // must delete them properly.
+  bool ExtractRedHeaders(std::list<RTPHeader*>* headers) const;
+
+  // Deletes all RTPHeader objects in |headers|, but does not delete |headers|
+  // itself.
+  static void DeleteRedHeaders(std::list<RTPHeader*>* headers);
+
+  const uint8_t* payload() const { return payload_; }
+
+  size_t packet_length_bytes() const { return packet_length_bytes_; }
+
+  size_t payload_length_bytes() const { return payload_length_bytes_; }
+
+  size_t virtual_packet_length_bytes() const {
+    return virtual_packet_length_bytes_;
+  }
+
+  size_t virtual_payload_length_bytes() const {
+    return virtual_payload_length_bytes_;
+  }
+
+  const RTPHeader& header() const { return header_; }
+
+  void set_time_ms(double time) { time_ms_ = time; }
+  double time_ms() const { return time_ms_; }
+  bool valid_header() const { return valid_header_; }
+
+ private:
+  bool ParseHeader(const RtpHeaderParser& parser);
+  void CopyToHeader(RTPHeader* destination) const;
+
+  RTPHeader header_;
+  scoped_ptr<uint8_t[]> payload_memory_;
+  const uint8_t* payload_;            // First byte after header.
+  const size_t packet_length_bytes_;  // Total length of packet.
+  size_t payload_length_bytes_;  // Length of the payload, after RTP header.
+                                 // Zero for dummy RTP packets.
+  // Virtual lengths are used when parsing RTP header files (dummy RTP files).
+  const size_t virtual_packet_length_bytes_;
+  size_t virtual_payload_length_bytes_;
+  double time_ms_;     // Used to denote a packet's arrival time.
+  bool valid_header_;  // Set by the RtpHeaderParser.
+
+  DISALLOW_COPY_AND_ASSIGN(Packet);
+};
+
+}  // namespace test
+}  // namespace webrtc
+#endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_PACKET_H_