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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.
*
*/
#include <vdr/thread.h>
#include <vdr/ringbuffer.h>
#include "common.h"
#include "streamer.h"
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cIptvStreamer::cIptvStreamer(cRingBufferLinear* RingBuffer, unsigned int PacketLen)
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: cThread("IPTV streamer"),
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ringBuffer(RingBuffer),
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packetBufferLen(PacketLen),
protocol(NULL)
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{
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debug("cIptvStreamer::cIptvStreamer(%d)\n", packetBufferLen);
// Allocate packet buffer
packetBuffer = MALLOC(unsigned char, packetBufferLen);
if (packetBuffer)
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memset(packetBuffer, 0, packetBufferLen);
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else
error("MALLOC() failed for packet buffer");
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}
cIptvStreamer::~cIptvStreamer()
{
debug("cIptvStreamer::~cIptvStreamer()\n");
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// Close the protocol
Close();
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protocol = NULL;
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ringBuffer = NULL;
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// Free allocated memory
free(packetBuffer);
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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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// Increase priority
//SetPriority(-1);
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// Do the thread loop
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while (packetBuffer && Running()) {
int length = -1;
if (protocol)
length = protocol->Read(packetBuffer, packetBufferLen);
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if (length > 0) {
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AddStreamerStatistic(length);
if (ringBuffer) {
int p = ringBuffer->Put(packetBuffer, length);
if (p != length)
ringBuffer->ReportOverflow(length - p);
}
}
else
sleep.Wait(10); // to avoid busy loop and reduce cpu load
}
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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
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if (protocol && !protocol->Open())
return false;
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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
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sleep.Signal();
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if (Running())
Cancel(3);
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// Close the protocol
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if (protocol)
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protocol->Close();
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return true;
}
bool cIptvStreamer::Set(const char* Location, const int Parameter, const int Index, cIptvProtocolIf* Protocol)
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{
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debug("cIptvStreamer::Set(): %s:%d\n", Location, Parameter);
if (!isempty(Location)) {
// Update protocol and set location and parameter; Close the existing one if changed
if (protocol != Protocol) {
if (protocol)
protocol->Close();
protocol = Protocol;
if (protocol) {
protocol->Set(Location, Parameter, Index);
protocol->Open();
}
}
else if (protocol)
protocol->Set(Location, Parameter, Index);
}
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return true;
}
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cString cIptvStreamer::GetInformation(void)
{
//debug("cIptvStreamer::GetInformation()");
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cString info("Stream:");
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if (protocol)
info = cString::sprintf("%s %s", *info, *protocol->GetInformation());
return cString::sprintf("%s\n", *info);
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}