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/*
* protocolfile.c: IPTV plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
*/
#include <fcntl.h>
#include <unistd.h>
#include <vdr/device.h>
#include "common.h"
#include "config.h"
#include "log.h"
#include "protocolfile.h"
cIptvProtocolFile::cIptvProtocolFile()
: fileLocationM(strdup("")),
fileDelayM(0),
fileStreamM(NULL),
isActiveM(false)
{
debug1("%s", __PRETTY_FUNCTION__);
}
cIptvProtocolFile::~cIptvProtocolFile()
{
debug1("%s", __PRETTY_FUNCTION__);
// Drop open handles
cIptvProtocolFile::Close();
// Free allocated memory
free(fileLocationM);
}
bool cIptvProtocolFile::OpenFile(void)
{
debug1("%s", __PRETTY_FUNCTION__);
// Check that stream address is valid
if (!isActiveM && !isempty(fileLocationM)) {
fileStreamM = fopen(fileLocationM, "rb");
ERROR_IF_RET(!fileStreamM || ferror(fileStreamM), "fopen()", return false);
// Update active flag
isActiveM = true;
}
return true;
}
void cIptvProtocolFile::CloseFile(void)
{
debug1("%s", __PRETTY_FUNCTION__);
// Check that file stream is valid
if (isActiveM && !isempty(fileLocationM)) {
fclose(fileStreamM);
// Update active flag
isActiveM = false;
}
}
int cIptvProtocolFile::Read(unsigned char* bufferAddrP, unsigned int bufferLenP)
{
debug16("%s (, %u)", __PRETTY_FUNCTION__, bufferLenP);
// Check errors
if (!fileStreamM || ferror(fileStreamM)) {
debug1("%s (, %d) Stream error", __PRETTY_FUNCTION__, bufferLenP);
return -1;
}
// Rewind if EOF
if (feof(fileStreamM))
rewind(fileStreamM);
// Sleep before reading the file stream to prevent aggressive busy looping
// and prevent transfer ringbuffer overflows
if (fileDelayM)
cCondWait::SleepMs(fileDelayM);
// This check is to prevent a race condition where file may be switched off
// during the sleep and buffers are disposed. Check here that the plugin is
// still active before accessing the buffers
if (isActiveM)
return (int)fread(bufferAddrP, sizeof(unsigned char), bufferLenP, fileStreamM);
return -1;
}
bool cIptvProtocolFile::Open(void)
{
debug1("%s", __PRETTY_FUNCTION__);
// Open the file stream
OpenFile();
return true;
}
bool cIptvProtocolFile::Close(void)
{
debug1("%s", __PRETTY_FUNCTION__);
// Close the file stream
CloseFile();
return true;
}
bool cIptvProtocolFile::SetSource(const char* locationP, const int parameterP, const int indexP)
{
debug1("%s (%s, %d, %d)", __PRETTY_FUNCTION__, locationP, parameterP, indexP);
if (!isempty(locationP)) {
// Close the file stream
CloseFile();
// Update stream address and port
fileLocationM = strcpyrealloc(fileLocationM, locationP);
fileDelayM = parameterP;
// Open the file for input
OpenFile();
}
return true;
}
bool cIptvProtocolFile::SetPid(int pidP, int typeP, bool onP)
{
debug16("%s (%d, %d, %d)", __PRETTY_FUNCTION__, pidP, typeP, onP);
return true;
}
cString cIptvProtocolFile::GetInformation(void)
{
debug16("%s", __PRETTY_FUNCTION__);
return cString::sprintf("file://%s:%d", fileLocationM, fileDelayM);
}