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/*!
* \file vdr_decoder.h
* \brief A generic decoder for a VDR media plugin (muggle)
* \ingroup vdr
*
* \version $Revision: 1.2 $
* \date $Date$
* \author Ralf Klueber, Lars von Wedel, Andreas Kellner
* \author Responsible author: $Author$
*
* $Id$
*
* Adapted from:
* MP3/MPlayer plugin to VDR (C++)
* (C) 2001-2003 Stefan Huelswitt <huels@iname.com>
*/
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/vfs.h>
#include <videodir.h>
#include <interface.h>
#include "vdr_decoder.h"
#include "vdr_decoder_mp3.h"
#include "vdr_decoder_ogg.h"
#include "mg_content_interface.h"
using namespace std;
// --- mgDecoders ---------------------------------------------------------------
mgMediaType mgDecoders::getMediaType( string s )
{
mgMediaType mt = MT_UNKNOWN;
// TODO: currently handles only mp3. LVW
char *f = (char *)s.c_str();
char *p = f + strlen( f ) - 1; // point to the end
while( p >= f && *p != '.') --p;
if( !strcmp( p, ".mp3" ) )
{
mt = MT_MP3;
}
else
{
if( !strcmp( p, ".ogg" ) )
{
mt = MT_OGG;
}
}
return mt;
}
mgDecoder *mgDecoders::findDecoder( mgContentItem *item )
{
mgDecoder *decoder = 0;
string filename = item->getSourceFile();
switch( getMediaType( filename ) )
{
case MT_MP3:
{
decoder = new mgMP3Decoder( item );
} break;
#ifdef HAVE_VORBISFILE
case MT_OGG:
{
decoder = new mgOggDecoder( item );
} break;
#endif
/*
case MT_MP3_STREAM: decoder = new mgMP3StreamDecoder(full); break;
#ifdef HAVE_SNDFILE
case MT_SND: decoder = new cSndDecoder(full); break;
#endif
*/
default:
{
esyslog("ERROR: unknown media type" );
} break;
}
if( decoder && !decoder->valid() )
{
// no decoder found or decoder doesn't match
delete decoder; // might be carried out on NULL pointer!
decoder = 0;
esyslog("ERROR: no valid decoder found for %s", filename.c_str() );
}
return decoder;
}
// --- mgDecoder ----------------------------------------------------------------
mgDecoder::mgDecoder( mgContentItem *item )
{
m_item = item;
m_locked = 0;
m_urgentLock = false;
m_playing = false;
}
mgDecoder::~mgDecoder()
{
}
void mgDecoder::lock(bool urgent)
{
m_locklock.Lock();
if( urgent && m_locked )
{
m_urgentLock = true; // signal other locks to release quickly
}
m_locked ++;
m_locklock.Unlock(); // don't hold the "locklock" when locking "lock", may cause a deadlock
m_lock.Lock();
m_urgentLock = false;
}
void mgDecoder::unlock(void)
{
m_locklock.Lock();
m_locked--;
m_lock.Unlock();
m_locklock.Unlock();
}
bool mgDecoder::tryLock(void)
{
bool res = false;
m_locklock.Lock();
if( !m_locked && !m_playing )
{
lock();
res = true;
}
m_locklock.Unlock();
return res;
}
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