/*
   XMMS-SID - SIDPlay input plugin for X MultiMedia System (XMMS)

   libSIDPlay v2 support

   Written by Matti "ccr" Hamalainen <ccr@tnsp.org>

   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "xmms-sid.h"

#ifdef HAVE_SIDPLAY2

extern "C" {
#include "xs_sidplay2.h"
#include <stdio.h>
#include <xmms/titlestring.h>
#include "xs_config.h"
#include "xs_support.h"
#include "xs_length.h"
}

#include <sidplay/sidplay2.h>
#ifdef HAVE_RESID_BUILDER
#include <sidplay/builders/resid.h>
#endif
#ifdef HAVE_HARDSID_BUILDER
#include <sidplay/builders/hardsid.h>
#endif


typedef struct {
	sidplay2	*currEng;
	sidbuilder	*currBuilder;
	sid2_config_t	currConfig;
	SidTune		*currTune;
} t_xs_sidplay2;


/*
 * We need to 'export' all this pseudo-C++ crap
 */
extern "C" {


/*
 * Check if we can play the given file
 */
gboolean xs_sidplay2_isourfile(gchar *pcFilename)
{
 SidTune *testTune = new SidTune(pcFilename);

 if (!testTune) return FALSE;
 if (!testTune->getStatus())
	{
	delete testTune;
	return FALSE;
	}

 delete testTune;
 return TRUE;
}


/*
 * Initialize SIDPlay2
 */
gboolean xs_sidplay2_init(t_xs_status *myStatus)
{
 t_xs_sidplay2 *myPlayer;
 assert(myStatus);

 /* Allocate internal structures */
 myPlayer = (t_xs_sidplay2 *) g_malloc0(sizeof(t_xs_sidplay2));
 if (!myPlayer) return FALSE;


 /* Initialize the engine */
 myPlayer->currEng = new sidplay2;
 if (!myPlayer->currEng)
	{
	XSERR("Could not initialize libSIDPlay2 emulation engine\n");
	return FALSE;
	}

 /* Initialize builder object */
 XSDEBUG("init builder #%i\n", xs_cfg.sid2Builder);
#ifdef HAVE_RESID_BUILDER
 if (xs_cfg.sid2Builder == XS_BLD_RESID)
	{
	ReSIDBuilder *tmpb = new ReSIDBuilder("SIDPlay2 suxx and is made by a fag - ReSID builder");

	/* Create the builder -- WHAT IS THIS MEANT FOR??? */
	tmpb->create(myPlayer->currEng->info().maxsids);

	myPlayer->currBuilder = (sidbuilder *) tmpb;
	}
#endif
#ifdef HAVE_HARDSID_BUILDER
 if (xs_cfg.sid2Builder == XS_BLD_HARDSID)
	{
	}
#endif

 if (!myPlayer->currBuilder)
	{
	XSERR("Could not initialize SIDBuilder object.\n");
	return FALSE;
	}

 XSDEBUG("%s\n", myPlayer->currBuilder->credits());


 /* Create the sidtune */
 myPlayer->currTune = new SidTune(0);
 if (!myPlayer->currTune)
	{
	XSERR("Could not initialize SIDTune object.\n");
	return FALSE;
	}
 
 /* OK */
 myStatus->player = myPlayer;
 return TRUE;
}


/*
 * Close SIDPlay2
 */
void xs_sidplay2_close(t_xs_status *myStatus)
{
 t_xs_sidplay2 *myPlayer;
 assert(myStatus);

 /* Free internals */
 myPlayer = (t_xs_sidplay2 *) myStatus->player;

 if (myPlayer->currBuilder)
	{
	delete myPlayer->currBuilder;
	myPlayer->currBuilder = NULL;
	}

 if (myPlayer->currEng)
	{
	delete myPlayer->currEng;
	myPlayer->currEng = NULL;
	}

 if (myPlayer->currTune)
	{
	delete myPlayer->currTune;
	myPlayer->currTune = NULL;
	}

 xs_sidplay2_deletesid(myStatus);

 g_free(myPlayer);
 myStatus->player = NULL;
}


gboolean xs_sidplay2_initsong(t_xs_status *myStatus)
{
 t_xs_sidplay2 *myPlayer = (t_xs_sidplay2 *) myStatus->player;

 if (!myPlayer) return FALSE;

 if (!myPlayer->currTune->selectSong(myStatus->currSong))
	{
	XSERR("ENGINE selectSong() failed\n");
	return FALSE;
	}

 if (myPlayer->currEng->load(myPlayer->currTune) < 0)
	{
	XSERR("ENGINE load() failed\n");
	return FALSE;
	}

 return TRUE;
}


gboolean xs_sidplay2_fillbuffer(t_xs_status *myStatus, gchar *audioBuffer, gint audioBufSize)
{
 t_xs_sidplay2 *myPlayer = (t_xs_sidplay2 *) myStatus->player;

 return (myPlayer->currEng->play(audioBuffer, audioBufSize) == (guint) audioBufSize);
}


gboolean xs_sidplay2_loadsid(t_xs_status *myStatus, gchar *pcFilename)
{
 t_xs_sidplay2 *myPlayer = (t_xs_sidplay2 *) myStatus->player;
 assert(myStatus);

 /* Try to get the tune */
 if (!pcFilename) return FALSE;
 if (!myPlayer->currTune->load(pcFilename)) return FALSE;

 /* Get current configuration */
 myPlayer->currConfig = myPlayer->currEng->config();

 /* Configure channels and stuff */
 switch (xs_cfg.fmtChannels) {

	case XS_CHN_AUTOPAN:
		myPlayer->currConfig.playback = sid2_stereo;
		break;

	case XS_CHN_STEREO:
		myPlayer->currConfig.playback = sid2_stereo;
		break;

	case XS_CHN_MONO:
	default:
		myPlayer->currConfig.playback = sid2_mono;
		break;
 }


 /* Memory mode settings */
 switch (xs_cfg.memoryMode) {
	case XS_MPU_BANK_SWITCHING:
		myPlayer->currConfig.environment = sid2_envBS;
		break;

	case XS_MPU_TRANSPARENT_ROM:
		myPlayer->currConfig.environment = sid2_envTP;
		break;

	case XS_MPU_PLAYSID_ENVIRONMENT:
		myPlayer->currConfig.environment = sid2_envPS;
		break;

	case XS_MPU_REAL:
	default:
		myPlayer->currConfig.environment = sid2_envR;
		break;
 }


 /* Clockspeed settings */
 switch (xs_cfg.clockSpeed) {
	case XS_CLOCK_NTSC:
		myPlayer->currConfig.clockSpeed = myPlayer->currConfig.clockDefault = SID2_CLOCK_NTSC;
		break;

	case XS_CLOCK_PAL:
	default:
		myPlayer->currConfig.clockSpeed = myPlayer->currConfig.clockDefault = SID2_CLOCK_PAL;
		break;
 }


 /* Configure rest of the emulation */
 myPlayer->currConfig.sidEmulation	= myPlayer->currBuilder;
 myPlayer->currConfig.precision		= xs_cfg.fmtBitsPerSample;
 myPlayer->currConfig.frequency		= xs_cfg.fmtFrequency; 
 myPlayer->currConfig.clockForced	= xs_cfg.forceSpeed;
 myPlayer->currConfig.optimisation	= (xs_cfg.sid2OptLevel) ? 1 : 0;
 myPlayer->currConfig.sidDefault	= myPlayer->currConfig.sidModel = (xs_cfg.mos8580) ? SID2_MOS8580 : SID2_MOS6581;
 myPlayer->currConfig.sidSamples	= TRUE;	// FIXME FIX ME, make configurable!

#ifdef HAVE_UNSIGNEDPCM
#ifdef WORDS_BIGENDIAN
 myPlayer->currConfig.sampleFormat	= SID2_BIG_UNSIGNED;
#else
 myPlayer->currConfig.sampleFormat	= SID2_LITTLE_UNSIGNED;
#endif
#else
#ifdef WORDS_BIGENDIAN
 myPlayer->currConfig.sampleFormat	= SID2_BIG_SIGNED;
#else
 myPlayer->currConfig.sampleFormat	= SID2_LITTLE_SIGNED;
#endif
#endif


 /* Now set the emulator configuration */
 if (myPlayer->currEng->config(myPlayer->currConfig) < 0)
	{
	XSERR("Emulator engine configuration failed!\n");
	return FALSE;
	}

 return TRUE;
}


/*
 * Delete tune
 */
void xs_sidplay2_deletesid(t_xs_status *myStatus)
{
 assert(myStatus);

 /* With the current scheme of handling sidtune-loading, we don't do anything here. */
}


/*
 * Return song information
 */
#define TFUNCTION1	xs_sidplay2_filetitle
#define TFUNCTION2	xs_sidplay2_getsidinfo
#define TTUNEINFO	SidTuneInfo
#define TTUNE		SidTune
#include "xs_sidplay.h"

}	/* extern "C" */
#endif	/* HAVE_SIDPLAY2 */