1 /* 2 * Copyright (c) 2013 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_RTP_RECEIVER_IMPL_H_ 12 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_RECEIVER_IMPL_H_ 13 14 #include "webrtc/modules/rtp_rtcp/interface/rtp_receiver.h" 15 #include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp_defines.h" 16 #include "webrtc/modules/rtp_rtcp/source/rtp_receiver_strategy.h" 17 #include "webrtc/system_wrappers/interface/critical_section_wrapper.h" 18 #include "webrtc/system_wrappers/interface/scoped_ptr.h" 19 #include "webrtc/typedefs.h" 20 21 namespace webrtc { 22 23 class RtpReceiverImpl : public RtpReceiver { 24 public: 25 // Callbacks passed in here may not be NULL (use Null Object callbacks if you 26 // want callbacks to do nothing). This class takes ownership of the media 27 // receiver but nothing else. 28 RtpReceiverImpl(int32_t id, 29 Clock* clock, 30 RtpAudioFeedback* incoming_audio_messages_callback, 31 RtpFeedback* incoming_messages_callback, 32 RTPPayloadRegistry* rtp_payload_registry, 33 RTPReceiverStrategy* rtp_media_receiver); 34 35 virtual ~RtpReceiverImpl(); 36 37 RTPReceiverStrategy* GetMediaReceiver() const; 38 39 int32_t RegisterReceivePayload( 40 const char payload_name[RTP_PAYLOAD_NAME_SIZE], 41 const int8_t payload_type, 42 const uint32_t frequency, 43 const uint8_t channels, 44 const uint32_t rate); 45 46 int32_t DeRegisterReceivePayload(const int8_t payload_type); 47 48 bool IncomingRtpPacket( 49 const RTPHeader& rtp_header, 50 const uint8_t* payload, 51 int payload_length, 52 PayloadUnion payload_specific, 53 bool in_order); 54 55 NACKMethod NACK() const; 56 57 // Turn negative acknowledgement requests on/off. 58 void SetNACKStatus(const NACKMethod method); 59 60 // Returns the last received timestamp. 61 bool Timestamp(uint32_t* timestamp) const; 62 bool LastReceivedTimeMs(int64_t* receive_time_ms) const; 63 64 uint32_t SSRC() const; 65 66 int32_t CSRCs(uint32_t array_of_csrc[kRtpCsrcSize]) const; 67 68 int32_t Energy(uint8_t array_of_energy[kRtpCsrcSize]) const; 69 70 // RTX. 71 void SetRTXStatus(bool enable, uint32_t ssrc); 72 73 void RTXStatus(bool* enable, uint32_t* ssrc, int* payload_type) const; 74 75 void SetRtxPayloadType(int payload_type); 76 77 TelephoneEventHandler* GetTelephoneEventHandler(); 78 79 private: 80 bool HaveReceivedFrame() const; 81 82 RtpVideoCodecTypes VideoCodecType() const; 83 84 void CheckSSRCChanged(const RTPHeader& rtp_header); 85 void CheckCSRC(const WebRtcRTPHeader& rtp_header); 86 int32_t CheckPayloadChanged(const RTPHeader& rtp_header, 87 const int8_t first_payload_byte, 88 bool& is_red, 89 PayloadUnion* payload, 90 bool* should_reset_statistics); 91 92 Clock* clock_; 93 RTPPayloadRegistry* rtp_payload_registry_; 94 scoped_ptr<RTPReceiverStrategy> rtp_media_receiver_; 95 96 int32_t id_; 97 98 RtpFeedback* cb_rtp_feedback_; 99 100 scoped_ptr<CriticalSectionWrapper> critical_section_rtp_receiver_; 101 int64_t last_receive_time_; 102 uint16_t last_received_payload_length_; 103 104 // SSRCs. 105 uint32_t ssrc_; 106 uint8_t num_csrcs_; 107 uint32_t current_remote_csrc_[kRtpCsrcSize]; 108 109 uint32_t last_received_timestamp_; 110 int64_t last_received_frame_time_ms_; 111 uint16_t last_received_sequence_number_; 112 113 NACKMethod nack_method_; 114 }; 115 } // namespace webrtc 116 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_RECEIVER_IMPL_H_ 117