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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 "vdr_decoder.h"
#include "vdr_decoder_mp3.h"
#include "vdr_decoder_ogg.h"
#include "mg_db.h"
#include <videodir.h>
#include <interface.h>
// --- mgDecoders ---------------------------------------------------------------
mgMediaType mgDecoders::getMediaType (std::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;
std::string filename = item->getSourceFile ();
struct stat st;
if (stat (filename.c_str (), &st))
{
esyslog ("ERROR: no valid decoder found for %s", filename.c_str ());
return 0;
}
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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