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#include "remux/extern.h"
#include "server/server.h"
#include "server/streamer.h"
#include <vdr/tools.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>
#include <unistd.h>
class cTSExt: public cThread {
private:
cRingBufferLinear *m_ResultBuffer;
bool m_Active;
int m_Process;
int m_Inpipe, m_Outpipe;
protected:
virtual void Action(void);
public:
cTSExt(cRingBufferLinear *ResultBuffer, std::string Parameter);
virtual ~cTSExt();
void Put(const uchar *Data, int Count);
};
cTSExt::cTSExt(cRingBufferLinear *ResultBuffer, std::string Parameter):
m_ResultBuffer(ResultBuffer),
m_Active(false),
m_Process(0),
m_Inpipe(0),
m_Outpipe(0)
{
int inpipe[2];
int outpipe[2];
if (pipe(inpipe) == -1) {
LOG_ERROR_STR("pipe failed");
return;
}
if (pipe(outpipe) == -1) {
LOG_ERROR_STR("pipe failed");
close(inpipe[0]);
close(inpipe[1]);
return;
}
if ((m_Process = fork()) == -1) {
LOG_ERROR_STR("fork failed");
close(inpipe[0]);
close(inpipe[1]);
close(outpipe[0]);
close(outpipe[1]);
return;
}
if (m_Process == 0) {
// child process
dup2(inpipe[0], STDIN_FILENO);
close(inpipe[1]);
dup2(outpipe[1], STDOUT_FILENO);
close(outpipe[0]);
int MaxPossibleFileDescriptors = getdtablesize();
for (int i = STDERR_FILENO + 1; i < MaxPossibleFileDescriptors; i++)
close(i); //close all dup'ed filedescriptors
std::string cmd = std::string(opt_remux) + " " + Parameter;
execl("/bin/sh", "sh", "-c", cmd.c_str(), NULL);
_exit(-1);
}
close(inpipe[0]);
close(outpipe[1]);
m_Inpipe = inpipe[1];
m_Outpipe = outpipe[0];
Start();
}
cTSExt::~cTSExt()
{
m_Active = false;
Cancel(3);
if (m_Process > 0) {
close(m_Outpipe);
close(m_Inpipe);
kill(m_Process, SIGTERM);
for (int i = 0; waitpid(m_Process, NULL, WNOHANG) == 0; i++) {
if (i == 20) {
esyslog("streamdev-server: externremux process won't stop - killing it");
kill(m_Process, SIGKILL);
}
cCondWait::SleepMs(100);
}
}
}
void cTSExt::Action(void)
{
m_Active = true;
while (m_Active) {
fd_set rfds;
struct timeval tv;
FD_ZERO(&rfds);
FD_SET(m_Outpipe, &rfds);
while (FD_ISSET(m_Outpipe, &rfds)) {
tv.tv_sec = 2;
tv.tv_usec = 0;
if (select(m_Outpipe + 1, &rfds, NULL, NULL, &tv) == -1) {
LOG_ERROR_STR("poll failed");
break;;
}
if (FD_ISSET(m_Outpipe, &rfds)) {
int result;
//Read returns 0 if buffer full or EOF
bool bufferFull = m_ResultBuffer->Free() <= 0; //Free may be < 0
while ((result = m_ResultBuffer->Read(m_Outpipe)) == 0 && bufferFull)
dsyslog("streamdev-server: buffer full while reading from externremux");
if (result == -1) {
if (errno != EINTR) {
LOG_ERROR_STR("read failed");
m_Active = false;
}
break;
}
else if (result == 0) {
esyslog("streamdev-server: EOF reading from externremux");
m_Active = false;
break;
}
}
}
}
m_Active = false;
}
void cTSExt::Put(const uchar *Data, int Count)
{
if (safe_write(m_Inpipe, Data, Count) == -1) {
LOG_ERROR_STR("write failed");
return;
}
}
cExternRemux::cExternRemux(int VPid, const int *APids, const int *Dpids, const int *SPids, std::string Parameter):
m_ResultBuffer(new cRingBufferLinear(WRITERBUFSIZE, TS_SIZE * 2)),
m_Remux(new cTSExt(m_ResultBuffer, Parameter))
{
m_ResultBuffer->SetTimeouts(500, 100);
}
cExternRemux::~cExternRemux()
{
delete m_Remux;
delete m_ResultBuffer;
}
int cExternRemux::Put(const uchar *Data, int Count)
{
m_Remux->Put(Data, Count);
return Count;
}
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