1 /*
2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
3 *
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.
9 */
10 #include "webrtc/base/checks.h"
11 #include "webrtc/base/scoped_ptr.h"
12 #include "webrtc/modules/rtp_rtcp/source/byte_io.h"
13 #include "webrtc/modules/rtp_rtcp/source/producer_fec.h"
14
15 namespace webrtc {
16
FuzzOneInput(const uint8_t * data,size_t size)17 void FuzzOneInput(const uint8_t* data, size_t size) {
18 ForwardErrorCorrection fec;
19 ProducerFec producer(&fec);
20 size_t i = 0;
21 if (size < 4)
22 return;
23 FecProtectionParams params = {data[i++] % 128, data[i++] % 1,
24 static_cast<int>(data[i++] % 10),
25 kFecMaskBursty};
26 producer.SetFecParameters(¶ms, 0);
27 uint16_t seq_num = data[i++];
28
29 while (i + 3 < size) {
30 size_t rtp_header_length = data[i++] % 10 + 12;
31 size_t payload_size = data[i++] % 10;
32 if (i + payload_size + rtp_header_length + 2 > size)
33 break;
34 rtc::scoped_ptr<uint8_t[]> packet(
35 new uint8_t[payload_size + rtp_header_length]);
36 memcpy(packet.get(), &data[i], payload_size + rtp_header_length);
37 ByteWriter<uint16_t>::WriteBigEndian(&packet[2], seq_num++);
38 i += payload_size + rtp_header_length;
39 // Make sure sequence numbers are increasing.
40 const int kRedPayloadType = 98;
41 rtc::scoped_ptr<RedPacket> red_packet(producer.BuildRedPacket(
42 packet.get(), payload_size, rtp_header_length, kRedPayloadType));
43 bool protect = static_cast<bool>(data[i++] % 2);
44 if (protect) {
45 producer.AddRtpPacketAndGenerateFec(packet.get(), payload_size,
46 rtp_header_length);
47 }
48 uint16_t num_fec_packets = producer.NumAvailableFecPackets();
49 std::vector<RedPacket*> fec_packets;
50 if (num_fec_packets > 0) {
51 fec_packets =
52 producer.GetFecPackets(kRedPayloadType, 99, 100, rtp_header_length);
53 RTC_CHECK_EQ(num_fec_packets, fec_packets.size());
54 }
55 for (RedPacket* fec_packet : fec_packets) {
56 delete fec_packet;
57 }
58 }
59 }
60 } // namespace webrtc
61