neutrino/src/driver/audioplay.cpp

/*
	Neutrino-GUI  -   DBoxII-Project

	audioplayer
	Copyright (C) 2002 Bjoern Kalkbrenner <terminar@cyberphoria.org>
	Copyright (C) 2002,2003 Dirch
	Copyright (C) 2002,2003,2004 Zwen
	Homepage: http://www.dbox2.info/

	Kommentar:

	License: GPL

	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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#define DBOX

/****************************************************************************
 * Includes																	*
 ****************************************************************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <global.h>
#include <stdio.h>
#include <fcntl.h>
#include <sched.h>

#include <neutrino.h>
#include <driver/audioplay.h>
#include <driver/netfile.h>
#include <eitd/edvbstring.h> // UTF8
#include <system/set_threadname.h>

void CAudioPlayer::stop()
{
	state = CBaseDec::STOP_REQ;
	if(thrPlay)
		pthread_join(thrPlay,NULL);
	thrPlay = 0;
	state = CBaseDec::STOP;
}
void CAudioPlayer::pause()
{
   if(state==CBaseDec::PLAY || state==CBaseDec::FF || state==CBaseDec::REV)
      state=CBaseDec::PAUSE;
   else if(state==CBaseDec::PAUSE)
      state=CBaseDec::PLAY;
}
void CAudioPlayer::ff(unsigned int seconds)
{
	m_SecondsToSkip = seconds;
	if(state==CBaseDec::PLAY || state==CBaseDec::PAUSE || state==CBaseDec::REV)
		state=CBaseDec::FF;
	else if(state==CBaseDec::FF)
		state=CBaseDec::PLAY;
}
void CAudioPlayer::rev(unsigned int seconds)
{
	m_SecondsToSkip = seconds;
	if(state==CBaseDec::PLAY || state==CBaseDec::PAUSE || state==CBaseDec::FF)
		state=CBaseDec::REV;
	else if(state==CBaseDec::REV)
		state=CBaseDec::PLAY;
}
CAudioPlayer* CAudioPlayer::getInstance()
{
	static CAudioPlayer* AudioPlayer = NULL;
	if(AudioPlayer == NULL)
	{
		AudioPlayer = new CAudioPlayer();
	}
	return AudioPlayer;
}

void* CAudioPlayer::PlayThread( void* /*dummy*/ )
{
	int soundfd = -1;
	set_threadname("audio:play");
	g_RCInput->close_click();
	/* Decode stdin to stdout. */
	CBaseDec::RetCode Status =
		CBaseDec::DecoderBase( &getInstance()->m_Audiofile, soundfd,
				&getInstance()->state,
				&getInstance()->m_played_time,
				&getInstance()->m_SecondsToSkip );

	if (Status != CBaseDec::OK)
	{
		fprintf( stderr, "Error during decoding: %s.\n",
				( Status == CBaseDec::READ_ERR ) ? "READ_ERR" :
				( Status == CBaseDec::WRITE_ERR ) ? "WRITE_ERR" :
				( Status == CBaseDec::DSPSET_ERR ) ? "DSPSET_ERR" :
				( Status == CBaseDec::DATA_ERR ) ? "DATA_ERR" :
				( Status == CBaseDec::INTERNAL_ERR ) ? "INTERNAL_ERR" :
				"unknown" );
	}

	g_RCInput->open_click();

	getInstance()->state = CBaseDec::STOP;
	pthread_exit(0);
	return NULL;
}

bool CAudioPlayer::play(const CAudiofile* file, const bool highPrio)
{
	if (state != CBaseDec::STOP)
		stop();
	getInstance()->clearFileData();

	/* + transfer information from CAudiofile to member variable,
		 so that it does not have to be gathered again
	   + this assignment is important, otherwise the player would
		 crash if the file currently played was deleted from the
		 playlist
	*/
	m_Audiofile = *file;

	state = CBaseDec::PLAY;
	pthread_attr_t attr;
	pthread_attr_init(&attr);
	pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
	if(highPrio)
	{
		struct sched_param param;
		pthread_attr_setschedpolicy(&attr, SCHED_RR);
		param.sched_priority=1;
		pthread_attr_setschedparam(&attr, &param);
		usleep(100000); // give the event thread some time to handle his stuff
						// without this sleep there were duplicated events...
	}

	bool ret = true;
	//#warning fixme: There must be a way to call the playing thread without arguments. (NULL did not work for me)
	if (pthread_create (&thrPlay, &attr, PlayThread, (void*)&ret) != 0 )
	{
		perror("audioplay: pthread_create(PlayThread)");
		ret = false;
	}

	pthread_attr_destroy(&attr);
	return ret;
}

CAudioPlayer::CAudioPlayer()
{
	init();
}

void CAudioPlayer::init()
{
	CBaseDec::Init();
	state = CBaseDec::STOP;
	thrPlay = 0;
	m_SecondsToSkip = 0;
}

void CAudioPlayer::sc_callback(void *arg)
{
  bool changed=false;
  CSTATE *stat = (CSTATE*)arg;

  const std::string artist	= isUTF8(stat->artist)	? stat->artist	: convertLatin1UTF8(stat->artist);
  const std::string title	= isUTF8(stat->title)	? stat->title	: convertLatin1UTF8(stat->title);
  const std::string station	= isUTF8(stat->station)	? stat->station	: convertLatin1UTF8(stat->station);
  const std::string genre	= isUTF8(stat->genre)	? stat->artist	: convertLatin1UTF8(stat->genre);

  if(m_Audiofile.MetaData.artist != artist)
  {
	  m_Audiofile.MetaData.artist = artist;
	  changed=true;
  }
  if (m_Audiofile.MetaData.title != title)
  {
	  m_Audiofile.MetaData.title = title;
	  changed=true;
  }
  if (m_Audiofile.MetaData.sc_station != station)
  {
	  m_Audiofile.MetaData.sc_station = station;
	  changed=true;
  }
  if (m_Audiofile.MetaData.genre != genre)
  {
	  m_Audiofile.MetaData.genre = genre;
	  changed=true;
  }
  if(changed)
  {
	  m_played_time = 0;
  }
  m_sc_buffered = stat->buffered;
  m_Audiofile.MetaData.changed = changed;
  //printf("Callback %s %s %s %d\n",stat->artist, stat->title, stat->station, stat->buffered);
}

void CAudioPlayer::clearFileData()
{
	m_Audiofile.clear();
	m_played_time=0;
	m_sc_buffered=0;
	m_SecondsToSkip = 0;
}

CAudioMetaData CAudioPlayer::getMetaData()
{
	CAudioMetaData m = m_Audiofile.MetaData;
	m_Audiofile.MetaData.changed=false;
	return m;
}

bool CAudioPlayer::hasMetaDataChanged()
{
	return m_Audiofile.MetaData.changed;
}

bool CAudioPlayer::readMetaData(CAudiofile* const file, const bool nice)
{
	return CBaseDec::GetMetaDataBase(file, nice);
}