1/*
2 * Copyright (C) 2017 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "RTCPacketOptions.h"
28
29#if USE(LIBWEBRTC)
30
31#include "DataReference.h"
32#include "WebCoreArgumentCoders.h"
33#include <wtf/Optional.h>
34
35namespace WebKit {
36
37void RTCPacketOptions::encode(IPC::Encoder& encoder) const
38{
39 encoder.encodeEnum(options.dscp);
40 encoder << safeCast<int32_t>(options.packet_id);
41 encoder << options.packet_time_params.rtp_sendtime_extension_id;
42
43 encoder << static_cast<int64_t>(options.packet_time_params.srtp_auth_tag_len);
44 if (options.packet_time_params.srtp_auth_tag_len > 0)
45 encoder << IPC::DataReference(reinterpret_cast<const uint8_t*>(options.packet_time_params.srtp_auth_key.data()), options.packet_time_params.srtp_auth_key.size());
46
47 encoder << options.packet_time_params.srtp_packet_index;
48}
49
50Optional<RTCPacketOptions> RTCPacketOptions::decode(IPC::Decoder& decoder)
51{
52 rtc::PacketTimeUpdateParams params;
53 rtc::PacketOptions options;
54
55 rtc::DiffServCodePoint dscp;
56 if (!decoder.decodeEnum(dscp))
57 return WTF::nullopt;
58 options.dscp = dscp;
59
60 Optional<int32_t> packetId;
61 decoder >> packetId;
62 if (!packetId)
63 return WTF::nullopt;
64 options.packet_id = packetId.value();
65
66 Optional<int> rtpSendtimeExtensionId;
67 decoder >> rtpSendtimeExtensionId;
68 if (!rtpSendtimeExtensionId)
69 return WTF::nullopt;
70 params.rtp_sendtime_extension_id = rtpSendtimeExtensionId.value();
71
72 Optional<int64_t> srtpAuthTagLength;
73 decoder >> srtpAuthTagLength;
74 if (!srtpAuthTagLength)
75 return WTF::nullopt;
76 params.srtp_auth_tag_len = srtpAuthTagLength.value();
77
78 if (params.srtp_auth_tag_len > 0) {
79 IPC::DataReference srtpAuthKey;
80 if (!decoder.decode(srtpAuthKey))
81 return WTF::nullopt;
82
83 params.srtp_auth_key = std::vector<char>(static_cast<size_t>(srtpAuthKey.size()));
84 memcpy(params.srtp_auth_key.data(), reinterpret_cast<const char*>(srtpAuthKey.data()), srtpAuthKey.size() * sizeof(char));
85 }
86
87 Optional<int64_t> srtpPacketIndex;
88 decoder >> srtpPacketIndex;
89 if (!srtpPacketIndex)
90 return WTF::nullopt;
91 params.srtp_packet_index = srtpPacketIndex.value();
92
93 options.packet_time_params = WTFMove(params);
94 return RTCPacketOptions { WTFMove(options) };
95}
96
97}
98
99#endif // USE(LIBWEBRTC)
100