2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
11 #ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_PACKET_H_
12 #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_PACKET_H_
16 #include "webrtc/base/constructormagic.h"
17 #include "webrtc/common_types.h"
18 #include "webrtc/system_wrappers/interface/scoped_ptr.h"
19 #include "webrtc/typedefs.h"
23 class RtpHeaderParser;
24 struct WebRtcRTPHeader;
28 // Class for handling RTP packets in test applications.
31 // Creates a packet, with the packet payload (including header bytes) in
32 // |packet_memory|. The length of |packet_memory| is |allocated_bytes|.
33 // The new object assumes ownership of |packet_memory| and will delete it
34 // when the Packet object is deleted. The |time_ms| is an extra time
35 // associated with this packet, typically used to denote arrival time.
36 // The first bytes in |packet_memory| will be parsed using |parser|.
37 Packet(uint8_t* packet_memory,
38 size_t allocated_bytes,
40 const RtpHeaderParser& parser);
42 // Same as above, but with the extra argument |virtual_packet_length_bytes|.
43 // This is typically used when reading RTP dump files that only contain the
44 // RTP headers, and no payload (a.k.a RTP dummy files or RTP light). The
45 // |virtual_packet_length_bytes| tells what size the packet had on wire,
46 // including the now discarded payload, whereas |allocated_bytes| is the
47 // length of the remaining payload (typically only the RTP header).
48 Packet(uint8_t* packet_memory,
49 size_t allocated_bytes,
50 size_t virtual_packet_length_bytes,
52 const RtpHeaderParser& parser);
54 // The following two constructors are the same as above, but without a
55 // parser. Note that when the object is constructed using any of these
56 // methods, the header will be parsed using a default RtpHeaderParser object.
57 // In particular, RTP header extensions won't be parsed.
58 Packet(uint8_t* packet_memory, size_t allocated_bytes, double time_ms);
60 Packet(uint8_t* packet_memory,
61 size_t allocated_bytes,
62 size_t virtual_packet_length_bytes,
67 // Parses the first bytes of the RTP payload, interpreting them as RED headers
68 // according to RFC 2198. The headers will be inserted into |headers|. The
69 // caller of the method assumes ownership of the objects in the list, and
70 // must delete them properly.
71 bool ExtractRedHeaders(std::list<RTPHeader*>* headers) const;
73 // Deletes all RTPHeader objects in |headers|, but does not delete |headers|
75 static void DeleteRedHeaders(std::list<RTPHeader*>* headers);
77 const uint8_t* payload() const { return payload_; }
79 size_t packet_length_bytes() const { return packet_length_bytes_; }
81 size_t payload_length_bytes() const { return payload_length_bytes_; }
83 size_t virtual_packet_length_bytes() const {
84 return virtual_packet_length_bytes_;
87 size_t virtual_payload_length_bytes() const {
88 return virtual_payload_length_bytes_;
91 const RTPHeader& header() const { return header_; }
93 // Copies the packet header information, converting from the native RTPHeader
94 // type to WebRtcRTPHeader.
95 void ConvertHeader(WebRtcRTPHeader* copy_to) const;
97 void set_time_ms(double time) { time_ms_ = time; }
98 double time_ms() const { return time_ms_; }
99 bool valid_header() const { return valid_header_; }
102 bool ParseHeader(const RtpHeaderParser& parser);
103 void CopyToHeader(RTPHeader* destination) const;
106 scoped_ptr<uint8_t[]> payload_memory_;
107 const uint8_t* payload_; // First byte after header.
108 const size_t packet_length_bytes_; // Total length of packet.
109 size_t payload_length_bytes_; // Length of the payload, after RTP header.
110 // Zero for dummy RTP packets.
111 // Virtual lengths are used when parsing RTP header files (dummy RTP files).
112 const size_t virtual_packet_length_bytes_;
113 size_t virtual_payload_length_bytes_;
114 double time_ms_; // Used to denote a packet's arrival time.
115 bool valid_header_; // Set by the RtpHeaderParser.
117 DISALLOW_COPY_AND_ASSIGN(Packet);
121 } // namespace webrtc
122 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_PACKET_H_