1 /* 2 * Copyright (c) 2016 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 CALL_FLEXFEC_RECEIVE_STREAM_H_ 12 #define CALL_FLEXFEC_RECEIVE_STREAM_H_ 13 14 #include <stdint.h> 15 16 #include <string> 17 #include <vector> 18 19 #include "api/call/transport.h" 20 #include "api/rtp_headers.h" 21 #include "api/rtp_parameters.h" 22 #include "call/rtp_packet_sink_interface.h" 23 24 namespace webrtc { 25 26 class FlexfecReceiveStream : public RtpPacketSinkInterface { 27 public: 28 ~FlexfecReceiveStream() override = default; 29 30 struct Stats { 31 std::string ToString(int64_t time_ms) const; 32 33 // TODO(brandtr): Add appropriate stats here. 34 int flexfec_bitrate_bps; 35 }; 36 37 struct Config { 38 explicit Config(Transport* rtcp_send_transport); 39 Config(const Config&); 40 ~Config(); 41 42 std::string ToString() const; 43 44 // Returns true if all RTP information is available in order to 45 // enable receiving FlexFEC. 46 bool IsCompleteAndEnabled() const; 47 48 // Payload type for FlexFEC. 49 int payload_type = -1; 50 51 // SSRC for FlexFEC stream to be received. 52 uint32_t remote_ssrc = 0; 53 54 // Vector containing a single element, corresponding to the SSRC of the 55 // media stream being protected by this FlexFEC stream. The vector MUST have 56 // size 1. 57 // 58 // TODO(brandtr): Update comment above when we support multistream 59 // protection. 60 std::vector<uint32_t> protected_media_ssrcs; 61 62 // SSRC for RTCP reports to be sent. 63 uint32_t local_ssrc = 0; 64 65 // What RTCP mode to use in the reports. 66 RtcpMode rtcp_mode = RtcpMode::kCompound; 67 68 // Transport for outgoing RTCP packets. 69 Transport* rtcp_send_transport = nullptr; 70 71 // |transport_cc| is true whenever the send-side BWE RTCP feedback message 72 // has been negotiated. This is a prerequisite for enabling send-side BWE. 73 bool transport_cc = false; 74 75 // RTP header extensions that have been negotiated for this track. 76 std::vector<RtpExtension> rtp_header_extensions; 77 }; 78 79 virtual Stats GetStats() const = 0; 80 81 virtual const Config& GetConfig() const = 0; 82 }; 83 84 } // namespace webrtc 85 86 #endif // CALL_FLEXFEC_RECEIVE_STREAM_H_ 87