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/base/scoped_ptr.h" 15 #include "webrtc/modules/rtp_rtcp/include/rtp_receiver.h" 16 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" 17 #include "webrtc/modules/rtp_rtcp/source/rtp_receiver_strategy.h" 18 #include "webrtc/system_wrappers/include/critical_section_wrapper.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(Clock* clock, 29 RtpAudioFeedback* incoming_audio_messages_callback, 30 RtpFeedback* incoming_messages_callback, 31 RTPPayloadRegistry* rtp_payload_registry, 32 RTPReceiverStrategy* rtp_media_receiver); 33 34 virtual ~RtpReceiverImpl(); 35 36 int32_t RegisterReceivePayload(const char payload_name[RTP_PAYLOAD_NAME_SIZE], 37 const int8_t payload_type, 38 const uint32_t frequency, 39 const size_t channels, 40 const uint32_t rate) override; 41 42 int32_t DeRegisterReceivePayload(const int8_t payload_type) override; 43 44 bool IncomingRtpPacket(const RTPHeader& rtp_header, 45 const uint8_t* payload, 46 size_t payload_length, 47 PayloadUnion payload_specific, 48 bool in_order) override; 49 50 NACKMethod NACK() const override; 51 52 // Turn negative acknowledgement requests on/off. 53 void SetNACKStatus(const NACKMethod method) override; 54 55 // Returns the last received timestamp. 56 bool Timestamp(uint32_t* timestamp) const override; 57 bool LastReceivedTimeMs(int64_t* receive_time_ms) const override; 58 59 uint32_t SSRC() const override; 60 61 int32_t CSRCs(uint32_t array_of_csrc[kRtpCsrcSize]) const override; 62 63 int32_t Energy(uint8_t array_of_energy[kRtpCsrcSize]) const override; 64 65 TelephoneEventHandler* GetTelephoneEventHandler() override; 66 67 private: 68 bool HaveReceivedFrame() const; 69 70 void CheckSSRCChanged(const RTPHeader& rtp_header); 71 void CheckCSRC(const WebRtcRTPHeader& rtp_header); 72 int32_t CheckPayloadChanged(const RTPHeader& rtp_header, 73 const int8_t first_payload_byte, 74 bool* is_red, 75 PayloadUnion* payload); 76 77 Clock* clock_; 78 RTPPayloadRegistry* rtp_payload_registry_; 79 rtc::scoped_ptr<RTPReceiverStrategy> rtp_media_receiver_; 80 81 RtpFeedback* cb_rtp_feedback_; 82 83 rtc::scoped_ptr<CriticalSectionWrapper> critical_section_rtp_receiver_; 84 int64_t last_receive_time_; 85 size_t last_received_payload_length_; 86 87 // SSRCs. 88 uint32_t ssrc_; 89 uint8_t num_csrcs_; 90 uint32_t current_remote_csrc_[kRtpCsrcSize]; 91 92 uint32_t last_received_timestamp_; 93 int64_t last_received_frame_time_ms_; 94 uint16_t last_received_sequence_number_; 95 96 NACKMethod nack_method_; 97 }; 98 } // namespace webrtc 99 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_RECEIVER_IMPL_H_ 100
