mirror of
https://github.com/slsdetectorgroup/slsDetectorPackage.git
synced 2025-04-24 23:30:03 +02:00
106 lines
2.7 KiB
C
Executable File
106 lines
2.7 KiB
C
Executable File
#pragma once
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#include "logger.h"
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#include "sls_detector_defs.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <netdb.h>
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extern const enum detectorType myDetectorType;
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extern int nSamples;
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extern int dataBytes;
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extern int nframes;
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extern char* ramValues;
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#define UDP_PACKET_HEADER_VERSION (0x1)
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uint32_t udpPacketNumber = 0;
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uint64_t udpFrameNumber = 0;
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int numSamplesPerPacket = 0;
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int dataBytesPerSample = 0;
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int dataBytesPerPacket = 0;
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int udpHeaderOffset = 0;
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uint32_t getUDPPacketNumber() {
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return udpPacketNumber;
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}
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uint64_t getUDPFrameNumber() {
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return udpFrameNumber;
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}
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/**
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* Called for each UDP packet header creation
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*
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*/
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void createUDPPacketHeader(char* buffer, uint16_t id) {
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memset(buffer, 0, sizeof(sls_detector_header));
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sls_detector_header* header = (sls_detector_header*)(buffer);
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header->modId = id;
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// row and column remains 0 (only used by ctb now)
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// uint64_t timestamp FIXME: needed?
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header->detType = (uint16_t)myDetectorType;
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header->version = UDP_PACKET_HEADER_VERSION;
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// reset offset
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udpHeaderOffset = 0;
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// reset frame number
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udpFrameNumber = 0;
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}
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int fillUDPPacket(char* buffer) {
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FILE_LOG(logDEBUG2, ("Databytes:%d offset:%d\n", dataBytes, udpHeaderOffset));
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// reached end of data for one frame
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if (udpHeaderOffset >= dataBytes) {
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// reset offset
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udpHeaderOffset = 0;
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return 0;
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}
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sls_detector_header* header = (sls_detector_header*)(buffer);
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// update frame number, starts at 1 (reset packet number)
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if (udpHeaderOffset == 0) {
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++udpFrameNumber;
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header->frameNumber = udpFrameNumber;
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udpPacketNumber = -1;
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}
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// increment and copy udp packet number (starts at 0)
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++udpPacketNumber;
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header->packetNumber = udpPacketNumber;
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FILE_LOG(logDEBUG2, ("Creating packet number %d (fnum:%lld)\n", udpPacketNumber, (long long int) udpFrameNumber));
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// calculate number of bytes to copy
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int numBytesToCopy = ((udpHeaderOffset + UDP_PACKET_DATA_BYTES) <= dataBytes) ?
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UDP_PACKET_DATA_BYTES : (dataBytes - udpHeaderOffset);
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// copy data
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memcpy(buffer + sizeof(sls_detector_header), ramValues + udpHeaderOffset, numBytesToCopy);
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// pad last packet if extra space
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if (numBytesToCopy < UDP_PACKET_DATA_BYTES) {
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int bytes = UDP_PACKET_DATA_BYTES - numBytesToCopy;
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FILE_LOG(logDEBUG1, ("Padding %d bytes for fnum:%lld pnum:%d\n", bytes, (long long int)udpFrameNumber, udpPacketNumber));
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memset(buffer + sizeof(sls_detector_header) + numBytesToCopy, 0, bytes);
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}
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// increment offset
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udpHeaderOffset += numBytesToCopy;
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return UDP_PACKET_DATA_BYTES + sizeof(sls_detector_header);
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}
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