ZLMediaKit/srt/Ack.cpp

83 lines
1.9 KiB
C++

#include "Ack.hpp"
#include "Common.hpp"
namespace SRT {
bool ACKPacket::loadFromData(uint8_t *buf, size_t len) {
if(len < ACK_CIF_SIZE + ControlPacket::HEADER_SIZE){
return false;
}
_data = BufferRaw::create();
_data->assign((char *)(buf), len);
ControlPacket::loadHeader();
ack_number = loadUint32(type_specific_info);
uint8_t* ptr = (uint8_t*)_data->data()+ControlPacket::HEADER_SIZE;
last_ack_pkt_seq_number = loadUint32(ptr);
ptr += 4;
rtt = loadUint32(ptr);
ptr += 4;
rtt_variance = loadUint32(ptr);
ptr += 4;
available_buf_size = loadUint32(ptr);
ptr += 4;
pkt_recv_rate = loadUint32(ptr);
ptr += 4;
estimated_link_capacity = loadUint32(ptr);
ptr += 4;
recv_rate = loadUint32(ptr);
ptr += 4;
return true;
}
bool ACKPacket::storeToData() {
_data = BufferRaw::create();
_data->setCapacity(HEADER_SIZE + ACK_CIF_SIZE);
_data->setSize(HEADER_SIZE + ACK_CIF_SIZE);
control_type = ControlPacket::ACK;
sub_type = 0;
storeUint32(type_specific_info,ack_number);
storeToHeader();
uint8_t* ptr = (uint8_t*)_data->data()+ControlPacket::HEADER_SIZE;
storeUint32(ptr,last_ack_pkt_seq_number);
ptr += 4;
storeUint32(ptr,rtt);
ptr += 4;
storeUint32(ptr,rtt_variance);
ptr += 4;
storeUint32(ptr,pkt_recv_rate);
ptr += 4;
storeUint32(ptr,available_buf_size);
ptr += 4;
storeUint32(ptr,estimated_link_capacity);
ptr += 4;
storeUint32(ptr,recv_rate);
ptr += 4;
return true;
}
std::string ACKPacket::dump(){
_StrPrinter printer;
printer << "last_ack_pkt_seq_number="<<last_ack_pkt_seq_number<<\
" rtt="<<rtt<<" rtt_variance="<<rtt_variance<<\
" pkt_recv_rate="<<pkt_recv_rate<<" available_buf_size="<<available_buf_size<<\
" estimated_link_capacity="<<estimated_link_capacity<<" recv_rate="<<recv_rate;
return std::move(printer);
}
} // namespace