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vdr-plugin-iptv/streamer.c

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/*
* streamer.c: IPTV plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
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* $Id: streamer.c,v 1.14 2007/09/21 21:50:52 rahrenbe Exp $
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*/
#include <vdr/thread.h>
#include <vdr/ringbuffer.h>
#include "common.h"
#include "streamer.h"
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cIptvStreamer::cIptvStreamer(cRingBufferLinear* RingBuffer, cMutex* Mutex)
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: cThread("IPTV streamer"),
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ringBuffer(RingBuffer),
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mutex(Mutex),
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protocol(NULL)
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{
debug("cIptvStreamer::cIptvStreamer()\n");
}
cIptvStreamer::~cIptvStreamer()
{
debug("cIptvStreamer::~cIptvStreamer()\n");
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// Close the protocol
Close();
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}
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void cIptvStreamer::Action(void)
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{
debug("cIptvStreamer::Action(): Entering\n");
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// Do the thread loop
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while (Running()) {
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if (ringBuffer && mutex && protocol && ringBuffer->Free()) {
unsigned char *buffer = NULL;
int length = protocol->Read(&buffer);
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if (length >= 0) {
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mutex->Lock();
int p = ringBuffer->Put(buffer, length);
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if (p != length && Running())
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ringBuffer->ReportOverflow(length - p);
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mutex->Unlock();
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}
else
cCondWait::SleepMs(100); // to reduce cpu load
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}
else
cCondWait::SleepMs(100); // and avoid busy loop
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}
debug("cIptvStreamer::Action(): Exiting\n");
}
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bool cIptvStreamer::Open(void)
{
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debug("cIptvStreamer::Open()\n");
// Open the protocol
if (protocol)
protocol->Open();
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// Start thread
Start();
return true;
}
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bool cIptvStreamer::Close(void)
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{
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debug("cIptvStreamer::Close()\n");
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// Stop thread
if (Running())
Cancel(3);
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// Close the protocol
if (protocol)
protocol->Close();
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return true;
}
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bool cIptvStreamer::Set(const char* Address, const int Port, cIptvProtocolIf* Protocol)
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{
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debug("cIptvStreamer::Set(): %s:%d\n", Address, Port);
if (!isempty(Address)) {
// Update protocol; Close the existing one if changed
if (protocol != Protocol) {
if (protocol)
protocol->Close();
protocol = Protocol;
if (protocol)
protocol->Open();
}
// Set protocol address and port
if (protocol)
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protocol->Set(Address, Port);
}
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return true;
}