1 /* 2 * Copyright (c) 2012 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 11 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_FEC_TEST_HELPER_H_ 12 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_FEC_TEST_HELPER_H_ 13 14 #include "webrtc/modules/include/module_common_types.h" 15 #include "webrtc/modules/rtp_rtcp/source/forward_error_correction.h" 16 17 namespace webrtc { 18 19 const uint8_t kFecPayloadType = 96; 20 const uint8_t kRedPayloadType = 97; 21 const uint8_t kVp8PayloadType = 120; 22 23 typedef ForwardErrorCorrection::Packet Packet; 24 25 struct RtpPacket : public Packet { 26 WebRtcRTPHeader header; 27 }; 28 29 class FrameGenerator { 30 public: 31 FrameGenerator(); 32 33 void NewFrame(int num_packets); 34 35 uint16_t NextSeqNum(); 36 37 RtpPacket* NextPacket(int offset, size_t length); 38 39 // Creates a new RtpPacket with the RED header added to the packet. 40 RtpPacket* BuildMediaRedPacket(const RtpPacket* packet); 41 42 // Creates a new RtpPacket with FEC payload and red header. Does this by 43 // creating a new fake media RtpPacket, clears the marker bit and adds a RED 44 // header. Finally replaces the payload with the content of |packet->data|. 45 RtpPacket* BuildFecRedPacket(const Packet* packet); 46 47 void SetRedHeader(Packet* red_packet, uint8_t payload_type, 48 size_t header_length) const; 49 50 private: 51 static void BuildRtpHeader(uint8_t* data, const RTPHeader* header); 52 53 int num_packets_; 54 uint16_t seq_num_; 55 uint32_t timestamp_; 56 }; 57 } // namespace webrtc 58 59 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_FEC_TEST_HELPER_H_ 60
