mirror of
https://projects.vdr-developer.org/git/vdr-plugin-streamdev.git
synced 2023-10-10 19:16:51 +02:00
291 lines
7.2 KiB
C
291 lines
7.2 KiB
C
/*
|
|
* $Id: filter.c,v 1.12 2008/04/07 14:27:28 schmirl Exp $
|
|
*/
|
|
|
|
#include "client/filter.h"
|
|
#include "client/socket.h"
|
|
#include "tools/select.h"
|
|
#include "common.h"
|
|
|
|
#include <vdr/device.h>
|
|
|
|
// --- cStreamdevFilter ------------------------------------------------------
|
|
|
|
class cStreamdevFilter: public cListObject {
|
|
private:
|
|
uchar m_Buffer[4096];
|
|
int m_Used;
|
|
int m_Pipe[2];
|
|
u_short m_Pid;
|
|
u_char m_Tid;
|
|
u_char m_Mask;
|
|
|
|
public:
|
|
cStreamdevFilter(u_short Pid, u_char Tid, u_char Mask);
|
|
virtual ~cStreamdevFilter();
|
|
|
|
bool Matches(u_short Pid, u_char Tid);
|
|
bool PutSection(const uchar *Data, int Length, bool Pusi);
|
|
int ReadPipe(void) const { return m_Pipe[0]; }
|
|
|
|
bool IsClosed(void);
|
|
void Reset(void);
|
|
|
|
u_short Pid(void) const { return m_Pid; }
|
|
u_char Tid(void) const { return m_Tid; }
|
|
u_char Mask(void) const { return m_Mask; }
|
|
};
|
|
|
|
inline bool cStreamdevFilter::Matches(u_short Pid, u_char Tid) {
|
|
return m_Pid == Pid && m_Tid == (Tid & m_Mask);
|
|
}
|
|
|
|
cStreamdevFilter::cStreamdevFilter(u_short Pid, u_char Tid, u_char Mask) {
|
|
m_Used = 0;
|
|
m_Pid = Pid;
|
|
m_Tid = Tid;
|
|
m_Mask = Mask;
|
|
m_Pipe[0] = m_Pipe[1] = -1;
|
|
|
|
#ifdef SOCK_SEQPACKET
|
|
// SOCK_SEQPACKET (since kernel 2.6.4)
|
|
if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, m_Pipe) != 0) {
|
|
esyslog("streamdev-client: socketpair(SOCK_SEQPACKET) failed: %m, trying SOCK_DGRAM");
|
|
}
|
|
#endif
|
|
if (m_Pipe[0] < 0 && socketpair(AF_UNIX, SOCK_DGRAM, 0, m_Pipe) != 0) {
|
|
esyslog("streamdev-client: couldn't open section filter socket: %m");
|
|
}
|
|
|
|
else if(fcntl(m_Pipe[0], F_SETFL, O_NONBLOCK) != 0 ||
|
|
fcntl(m_Pipe[1], F_SETFL, O_NONBLOCK) != 0) {
|
|
esyslog("streamdev-client: couldn't set section filter socket to non-blocking mode: %m");
|
|
}
|
|
}
|
|
|
|
cStreamdevFilter::~cStreamdevFilter() {
|
|
Dprintf("~cStreamdevFilter %p\n", this);
|
|
|
|
// ownership of handle m_Pipe[0] has been transferred to VDR section handler
|
|
//if (m_Pipe[0] >= 0)
|
|
// close(m_Pipe[0]);
|
|
if (m_Pipe[1] >= 0)
|
|
close(m_Pipe[1]);
|
|
}
|
|
|
|
bool cStreamdevFilter::PutSection(const uchar *Data, int Length, bool Pusi) {
|
|
|
|
if (!m_Used && !Pusi) /* wait for payload unit start indicator */
|
|
return true;
|
|
if (m_Used && Pusi) /* reset at payload unit start */
|
|
Reset();
|
|
|
|
if (m_Used + Length >= (int)sizeof(m_Buffer)) {
|
|
esyslog("ERROR: Streamdev: Section handler buffer overflow (%d bytes lost)",
|
|
Length);
|
|
Reset();
|
|
return true;
|
|
}
|
|
|
|
memcpy(m_Buffer + m_Used, Data, Length);
|
|
m_Used += Length;
|
|
if (m_Used > 3) {
|
|
int length = (((m_Buffer[1] & 0x0F) << 8) | m_Buffer[2]) + 3;
|
|
if (m_Used == length) {
|
|
m_Used = 0;
|
|
if (write(m_Pipe[1], m_Buffer, length) < 0) {
|
|
if(errno == EAGAIN || errno == EWOULDBLOCK)
|
|
dsyslog("cStreamdevFilter::PutSection socket overflow, "
|
|
"Pid %4d Tid %3d", m_Pid, m_Tid);
|
|
|
|
else
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (m_Used > length) {
|
|
dsyslog("cStreamdevFilter::PutSection: m_Used > length ! Pid %2d, Tid%2d "
|
|
"(len %3d, got %d/%d)", m_Pid, m_Tid, Length, m_Used, length);
|
|
if(Length < TS_SIZE-5) {
|
|
// TS packet not full -> this must be last TS packet of section data -> safe to reset now
|
|
Reset();
|
|
}
|
|
}
|
|
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void cStreamdevFilter::Reset(void) {
|
|
if(m_Used)
|
|
dsyslog("cStreamdevFilter::Reset skipping %d bytes", m_Used);
|
|
m_Used = 0;
|
|
}
|
|
|
|
bool cStreamdevFilter::IsClosed(void) {
|
|
char m_Buffer[3] = {0,0,0}; /* tid 0, 0 bytes */
|
|
|
|
// Test if pipe/socket has been closed by writing empty section
|
|
if (write(m_Pipe[1], m_Buffer, 3) < 0 &&
|
|
errno != EAGAIN &&
|
|
errno != EWOULDBLOCK) {
|
|
|
|
if (errno != ECONNREFUSED &&
|
|
errno != ECONNRESET &&
|
|
errno != EPIPE)
|
|
esyslog("cStreamdevFilter::IsClosed failed: %m");
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// --- cStreamdevFilters -----------------------------------------------------
|
|
|
|
cStreamdevFilters::cStreamdevFilters(void):
|
|
cThread("streamdev-client: sections assembler") {
|
|
m_TSBuffer = NULL;
|
|
}
|
|
|
|
cStreamdevFilters::~cStreamdevFilters() {
|
|
SetConnection(-1);
|
|
}
|
|
|
|
int cStreamdevFilters::OpenFilter(u_short Pid, u_char Tid, u_char Mask) {
|
|
CarbageCollect();
|
|
|
|
cStreamdevFilter *f = new cStreamdevFilter(Pid, Tid, Mask);
|
|
int fh = f->ReadPipe();
|
|
|
|
Lock();
|
|
Add(f);
|
|
Unlock();
|
|
|
|
return fh;
|
|
}
|
|
|
|
void cStreamdevFilters::CarbageCollect(void) {
|
|
LOCK_THREAD;
|
|
for (cStreamdevFilter *fi = First(); fi;) {
|
|
if (fi->IsClosed()) {
|
|
if (errno == ECONNREFUSED ||
|
|
errno == ECONNRESET ||
|
|
errno == EPIPE) {
|
|
ClientSocket.SetFilter(fi->Pid(), fi->Tid(), fi->Mask(), false);
|
|
Dprintf("cStreamdevFilters::CarbageCollector: filter closed: Pid %4d, Tid %3d, Mask %2x (%d filters left)",
|
|
(int)fi->Pid(), (int)fi->Tid(), fi->Mask(), Count()-1);
|
|
|
|
cStreamdevFilter *next = Prev(fi);
|
|
Del(fi);
|
|
fi = next ? Next(next) : First();
|
|
} else {
|
|
esyslog("cStreamdevFilters::CarbageCollector() error: "
|
|
"Pid %4d, Tid %3d, Mask %2x (%d filters left) failed",
|
|
(int)fi->Pid(), (int)fi->Tid(), fi->Mask(), Count()-1);
|
|
LOG_ERROR;
|
|
fi = Next(fi);
|
|
}
|
|
} else {
|
|
fi = Next(fi);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool cStreamdevFilters::ReActivateFilters(void)
|
|
{
|
|
LOCK_THREAD;
|
|
|
|
bool res = true;
|
|
CarbageCollect();
|
|
for (cStreamdevFilter *fi = First(); fi; fi = Next(fi)) {
|
|
res = ClientSocket.SetFilter(fi->Pid(), fi->Tid(), fi->Mask(), true) && res;
|
|
Dprintf("ReActivateFilters(%d, %d, %d) -> %s", fi->Pid(), fi->Tid(), fi->Mask(), res ? "Ok" :"FAIL");
|
|
}
|
|
return res;
|
|
}
|
|
|
|
void cStreamdevFilters::SetConnection(int Handle) {
|
|
|
|
Cancel(2);
|
|
DELETENULL(m_TSBuffer);
|
|
|
|
if (Handle >= 0) {
|
|
m_TSBuffer = new cTSBuffer(Handle, MEGABYTE(1), 1);
|
|
ReActivateFilters();
|
|
Start();
|
|
}
|
|
}
|
|
|
|
void cStreamdevFilters::Action(void) {
|
|
int fails = 0;
|
|
|
|
while (Running()) {
|
|
const uchar *block = m_TSBuffer->Get();
|
|
if (block) {
|
|
u_short pid = (((u_short)block[1] & PID_MASK_HI) << 8) | block[2];
|
|
u_char tid = block[3];
|
|
bool Pusi = block[1] & 0x40;
|
|
int len = block[4];
|
|
#if 0
|
|
if (block[1] == 0xff &&
|
|
block[2] == 0xff &&
|
|
block[3] == 0xff &&
|
|
block[4] == 0x7f)
|
|
isyslog("*********** TRANSPONDER -> %s **********", block+5);
|
|
#endif
|
|
LOCK_THREAD;
|
|
cStreamdevFilter *f = First();
|
|
while (f) {
|
|
cStreamdevFilter *next = Next(f);
|
|
if (f->Matches(pid, tid)) {
|
|
|
|
if (f->PutSection(block + 5, len, Pusi))
|
|
break;
|
|
|
|
if (errno != ECONNREFUSED &&
|
|
errno != ECONNRESET &&
|
|
errno != EPIPE) {
|
|
Dprintf("FATAL ERROR: %m\n");
|
|
esyslog("streamdev-client: couldn't send section packet: %m");
|
|
}
|
|
ClientSocket.SetFilter(f->Pid(), f->Tid(), f->Mask(), false);
|
|
Del(f);
|
|
// Filter was closed.
|
|
// - need to check remaining filters for another match
|
|
}
|
|
f = next;
|
|
}
|
|
} else {
|
|
#if 1 // TODO: this should be fixed in vdr cTSBuffer
|
|
// Check disconnection
|
|
int fd = *ClientSocket.DataSocket(siLiveFilter);
|
|
if(fd < 0)
|
|
break;
|
|
cPoller Poller(fd);
|
|
if (Poller.Poll()) {
|
|
char tmp[1];
|
|
errno = 0;
|
|
Dprintf("cStreamdevFilters::Action(): checking connection");
|
|
if (recv(fd, tmp, 1, MSG_PEEK) == 0 && errno != EAGAIN) {
|
|
++fails;
|
|
if (fails >= 10) {
|
|
esyslog("cStreamdevFilters::Action(): stream disconnected ?");
|
|
ClientSocket.CloseDataConnection(siLiveFilter);
|
|
break;
|
|
}
|
|
} else {
|
|
fails = 0;
|
|
}
|
|
} else {
|
|
fails = 0;
|
|
}
|
|
cCondWait::SleepMs(10);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
DELETENULL(m_TSBuffer);
|
|
dsyslog("StreamdevFilters::Action() ended");
|
|
}
|