mirror of
https://projects.vdr-developer.org/git/vdr-plugin-streamdev.git
synced 2023-10-10 19:16:51 +02:00
120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
/*
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* $Id: filter.c,v 1.3 2005/11/06 16:43:58 lordjaxom Exp $
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*/
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#include "client/filter.h"
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#include "client/socket.h"
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#include "tools/select.h"
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#include "common.h"
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#include <vdr/ringbuffer.h>
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#include <vdr/device.h>
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#if VDRVERSNUM >= 10300
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cStreamdevFilter::cStreamdevFilter(u_short Pid, u_char Tid, u_char Mask) {
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m_Used = 0;
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m_Pid = Pid;
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m_Tid = Tid;
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m_Mask = Mask;
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if (pipe(m_Pipe) != 0 || fcntl(m_Pipe[0], F_SETFL, O_NONBLOCK) != 0) {
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esyslog("streamev-client: coudln't open section filter pipe: %m");
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m_Pipe[0] = m_Pipe[1] = -1;
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}
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}
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cStreamdevFilter::~cStreamdevFilter() {
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Dprintf("~cStreamdevFilter %p\n", this);
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if (m_Pipe[0] >= 0)
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close(m_Pipe[0]);
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if (m_Pipe[1] >= 0)
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close(m_Pipe[1]);
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}
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bool cStreamdevFilter::PutSection(const uchar *Data, int Length) {
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if (m_Used + Length >= (int)sizeof(m_Buffer)) {
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esyslog("ERROR: Streamdev: Section handler buffer overflow (%d bytes lost)",
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Length);
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m_Used = 0;
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return true;
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}
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memcpy(m_Buffer + m_Used, Data, Length);
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m_Used += Length;
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if (m_Used > 3) {
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int length = (((m_Buffer[1] & 0x0F) << 8) | m_Buffer[2]) + 3;
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if (m_Used == length) {
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if (write(m_Pipe[1], m_Buffer, length) < 0)
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return false;
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m_Used = 0;
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}
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}
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return true;
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}
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cStreamdevFilters::cStreamdevFilters(void):
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cThread("streamdev-client: sections assembler") {
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m_Active = false;
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m_RingBuffer = new cRingBufferLinear(MEGABYTE(1), TS_SIZE * 2, true);
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Start();
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}
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cStreamdevFilters::~cStreamdevFilters() {
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if (m_Active) {
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m_Active = false;
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Cancel(3);
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}
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delete m_RingBuffer;
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}
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int cStreamdevFilters::OpenFilter(u_short Pid, u_char Tid, u_char Mask) {
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cStreamdevFilter *f = new cStreamdevFilter(Pid, Tid, Mask);
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Add(f);
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return f->ReadPipe();
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}
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cStreamdevFilter *cStreamdevFilters::Matches(u_short Pid, u_char Tid) {
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for (cStreamdevFilter *f = First(); f; f = Next(f)) {
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if (f->Matches(Pid, Tid))
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return f;
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}
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return NULL;
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}
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void cStreamdevFilters::Put(const uchar *Data) {
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int p = m_RingBuffer->Put(Data, TS_SIZE);
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if (p != TS_SIZE)
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m_RingBuffer->ReportOverflow(TS_SIZE - p);
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}
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void cStreamdevFilters::Action(void) {
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m_Active = true;
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while (m_Active) {
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int recvd;
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const uchar *block = m_RingBuffer->Get(recvd);
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if (block && recvd > 0) {
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cStreamdevFilter *f;
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u_short pid = (((u_short)block[1] & PID_MASK_HI) << 8) | block[2];
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u_char tid = block[3];
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if ((f = Matches(pid, tid)) != NULL) {
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int len = block[4];
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if (!f->PutSection(block + 5, len)) {
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if (errno != EPIPE) {
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esyslog("streamdev-client: couldn't send section packet: %m");
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Dprintf("FATAL ERROR: %m\n");
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}
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ClientSocket.SetFilter(f->Pid(), f->Tid(), f->Mask(), false);
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Del(f);
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}
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}
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m_RingBuffer->Del(TS_SIZE);
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} else
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usleep(1);
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}
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}
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#endif // VDRVERSNUM >= 10300
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