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/*
Copyright (C) 2009 Her Majesty the Queen in Right of Canada (Communications
Research Center Canada)
*/
/*
This file is part of CRC-DabMux.
CRC-DabMux is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
CRC-DabMux is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with CRC-DabMux. If not, see <http://www.gnu.org/licenses/>.
*/
#include "dabInputUdp.h"
#include <string.h>
#include <limits.h>
#ifdef __MINGW32__
# define bzero(s, n) memset(s, 0, n)
#endif
#ifdef HAVE_FORMAT_RAW
# ifdef HAVE_INPUT_UDP
struct dabInputOperations dabInputUdpOperations = {
dabInputUdpInit,
dabInputUdpOpen,
dabInputSetbuf,
NULL,
NULL,
NULL,
dabInputUdpRead,
dabInputSetbitrate,
dabInputUdpClose,
dabInputUdpClean,
NULL
};
int dabInputUdpInit(void** args)
{
dabInputUdpData* input = new dabInputUdpData;
memset(&input->stats, 0, sizeof(input->stats));
input->stats.id = dabInputFifoData::nb++;
input->socket = new UdpSocket();
input->packet = new UdpPacket(2048);
*args = input;
UdpSocket::init();
return 0;
}
int dabInputUdpOpen(void* args, const char* inputName)
{
int returnCode = 0;
char* address;
char* ptr;
long port;
address = strdup(inputName);
ptr = strchr(address, ':');
if (ptr == NULL) {
etiLog.log(error,
"\"%s\" is an invalid format for udp address: "
"should be [address]:port - > aborting\n", address);
returnCode = -1;
}
*(ptr++) = 0;
port = strtol(ptr, (char **)NULL, 10);
if ((port == LONG_MIN) || (port == LONG_MAX)) {
etiLog.log(error,
"can't convert port number in udp address %s\n",
address);
returnCode = -1;
}
if (port == 0) {
etiLog.log(error, "can't use port number 0 in udp address\n");
returnCode = -1;
}
dabInputUdpData* input = (dabInputUdpData*)args;
if (input->socket->create(port) == -1) {
etiLog.log(error, "can't set port %i on Udp input (%s: %s)\n",
port, inetErrDesc, inetErrMsg);
returnCode = -1;
}
if (*address != 0) {
if (input->socket->joinGroup(address) == -1) {
etiLog.log(error,
"can't join multicast group %s (%s: %s)\n",
address, inetErrDesc, inetErrMsg);
returnCode = -1;
}
}
if (input->socket->setBlocking(false) == -1) {
etiLog.log(error, "can't set Udp input socket in blocking mode "
"(%s: %s)\n", inetErrDesc, inetErrMsg);
returnCode = -1;
}
free(address);
etiLog.log(debug, "check return code of create\n");
return returnCode;;
}
int dabInputUdpRead(dabInputOperations* ops, void* args, void* buffer, int size)
{
int nbBytes = 0;
uint8_t* data = reinterpret_cast<uint8_t*>(buffer);
dabInputUdpData* input = (dabInputUdpData*)args;
dabInputFifoStats* stats = (dabInputFifoStats*)&input->stats;
input->stats.frameRecords[input->stats.frameCount].curSize = 0;
input->stats.frameRecords[input->stats.frameCount].maxSize = size;
if (input->packet->getLength() == 0) {
input->socket->receive(*input->packet);
}
while (nbBytes < size) {
unsigned freeSize = size - nbBytes;
if (input->packet->getLength() > freeSize) {
// Not enought place in output
memcpy(&data[nbBytes], input->packet->getData(), freeSize);
nbBytes = size;
input->packet->setOffset(input->packet->getOffset() + freeSize);
} else {
unsigned length = input->packet->getLength();
memcpy(&data[nbBytes], input->packet->getData(), length);
nbBytes += length;
input->packet->setOffset(0);
input->socket->receive(*input->packet);
if (input->packet->getLength() == 0) {
break;
}
}
}
input->stats.frameRecords[input->stats.frameCount].curSize = nbBytes;
bzero(&data[nbBytes], size - nbBytes);
input->stats.frameRecords[input->stats.frameCount].curSize = nbBytes;
if (++stats->frameCount == NB_RECORDS) {
etiLog.log(info, "Data subchannel usage: (%i)",
stats->id);
for (int i = 0; i < stats->frameCount; ++i) {
etiLog.log(info, " %i/%i",
stats->frameRecords[i].curSize,
stats->frameRecords[i].maxSize);
}
etiLog.log(info, "\n");
stats->frameCount = 0;
}
return size;
}
int dabInputUdpClose(void* args)
{
return 0;
}
int dabInputUdpClean(void** args)
{
dabInputUdpData* input = (dabInputUdpData*)(*args);
delete input->socket;
delete input->packet;
delete input;
return 0;
}
# endif
#endif
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