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/*
Copyright (C) 2009 Her Majesty the Queen in Right of Canada (Communications
Research Center Canada)
*/
/*
This file is part of ODR-DabMux.
ODR-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.
ODR-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 ODR-DabMux. If not, see <http://www.gnu.org/licenses/>.
*/
#include "dabInputRawFifo.h"
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#ifndef _WIN32
# define O_BINARY 0
#endif
#ifdef HAVE_FORMAT_RAW
# ifdef HAVE_INPUT_FILE
struct dabInputOperations dabInputRawFifoOperations = {
dabInputRawFifoInit,
dabInputRawFifoOpen,
dabInputRawFifoSetbuf,
dabInputRawFifoRead,
NULL,
NULL,
dabInputRawFifoReadFrame,
dabInputSetbitrate,
dabInputRawFifoClose,
dabInputRawFifoClean,
dabInputRawFifoRewind
};
int dabInputRawFifoInit(void** args)
{
dabInputRawFifoData* data = new dabInputRawFifoData;
data->file = -1;
data->buffer = NULL;
data->bufferSize = 0;
data->bufferOffset = 0;
*args = data;
return 0;
}
int dabInputRawFifoOpen(void* args, const char* filename)
{
dabInputRawFifoData* data = (dabInputRawFifoData*)args;
data->file = open(filename, O_RDONLY | O_BINARY | O_NONBLOCK);
if (data->file == -1) {
perror(filename);
return -1;
}
#ifdef _WIN32
#else
int flags = fcntl(data->file, F_GETFL);
if (flags == -1) {
perror(filename);
return -1;
}
if (fcntl(data->file, F_SETFL, flags & ~O_NONBLOCK) == -1) {
perror(filename);
return -1;
}
#endif
return 0;
}
int dabInputRawFifoSetbuf(void* args, int size)
{
dabInputRawFifoData* data = (dabInputRawFifoData*)args;
if (size <= 0) {
return size;
}
if (data->bufferSize != (size_t)size) {
if (data->buffer != NULL) {
delete[] data->buffer;
}
data->buffer = new uint8_t[size];
data->bufferSize = size;
data->bufferOffset = 0;
}
return 0;
}
int dabInputRawFifoRead(void* args, void* buffer, int size)
{
dabInputRawFifoData* data = (dabInputRawFifoData*)args;
return read(data->file, buffer, size);
}
int dabInputRawFifoReadFrame(dabInputOperations* ops, void* args,
void* buffer, int size)
{
dabInputRawFifoData* data = (dabInputRawFifoData*)args;
int result;
result = ops->read(args, data->buffer + data->bufferOffset, size - data->bufferOffset);
if (result == -1) {
etiLog.log(alert, "ERROR: Can't read fifo\n");
perror("");
return -1;
}
if (result + data->bufferOffset < (size_t)size) {
data->bufferOffset += result;
etiLog.log(info, "reach end of fifo -> rewinding\n");
if (ops->rewind(args) == -1) {
etiLog.log(alert, "ERROR: Can't rewind fifo\n");
return -1;
}
result = ops->read(args, data->buffer + data->bufferOffset, size - data->bufferOffset);
if (result == -1) {
etiLog.log(alert, "ERROR: Can't read fifo\n");
perror("");
return -1;
}
if (result < size) {
etiLog.log(alert, "ERROR: Not enought data in fifo\n");
return 0;
}
}
memcpy(buffer, data->buffer, size);
data->bufferOffset = 0;
return size;
}
int dabInputRawFifoClose(void* args)
{
dabInputRawFifoData* data = (dabInputRawFifoData*)args;
if (data->file != -1) {
close(data->file);
data->file = -1;
}
return 0;
}
int dabInputRawFifoClean(void** args)
{
dabInputRawFifoData* data = (dabInputRawFifoData*)*args;
if (data->buffer != NULL) {
delete[] data->buffer;
}
delete data;
return 0;
}
int dabInputRawFifoRewind(void* args)
{
dabInputRawFifoData* data = (dabInputRawFifoData*)args;
return lseek(data->file, 0, SEEK_SET);
}
# endif
#endif
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