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/* -*- c++ -*-
* vdr-ttxtsubs - A plugin for the Linux Video Disk Recorder
* Copyright (c) 2003 - 2008 Ragnar Sundblad <ragge@nada.kth.se>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <vdr/device.h>
#include <vdr/remux.h>
#include "ttxtsubslivereceiver.h"
cTtxtSubsLiveReceiver::cTtxtSubsLiveReceiver(cChannel* channel, cVDRTtxtsubsHookListener* hook)
:
_channel(channel),
_hook(hook)
{
AddPid(channel->Tpid());
}
cTtxtSubsLiveReceiver::~cTtxtSubsLiveReceiver()
{
cReceiver::Detach();
}
void cTtxtSubsLiveReceiver::Receive(uchar *Data, int Length)
{
if (Data == NULL)
{
tsToPesTeletext.Reset();
return;
}
if (Length < TS_SIZE)
{
esyslog("ERROR: skipped %d bytes of TS fragment", Length);
return;
}
while (Length >= TS_SIZE)
{
if (Data[0] != TS_SYNC_BYTE)
{
return;
}
if (TsHasPayload(Data)) // silently ignore TS packets w/o payload
{
int PayloadOffset = TsPayloadOffset(Data);
if (PayloadOffset < TS_SIZE)
{
int l;
tsToPesTeletext.PutTs(Data, Length);
if (const uchar *p = tsToPesTeletext.GetPes(l))
{
if ((l > 45) && (p[0] == 0x00) && (p[1] == 0x00) && (p[2] == 0x01) && (p[3] == 0xbd) && (p[8] == 0x24) && (p[45] >= 0x10) && (p[45] < 0x20))
{
_hook->PlayerTeletextData((uchar *)p, l, false, _channel->TeletextSubtitlePages(), _channel->TotalTeletextSubtitlePages());
}
tsToPesTeletext.Reset();
}
}
}
Length -= TS_SIZE;
Data += TS_SIZE;
}
}
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