SCI: Removed the FreeSCI music code

svn-id: r50532

1 files changed, 0 insertions, 1641 deletions

diff --git a/engines/sci/sound/iterator/iterator.cpp b/engines/sci/sound/iterator/iterator.cpp
deleted file mode 100644
index 62560b631f..0000000000
--- a/engines/sci/sound/iterator/iterator.cpp
+++ /dev/null
@@ -1,1641 +0,0 @@
-/* ScummVM - Graphic Adventure Engine
- *
- * ScummVM is the legal property of its developers, whose names
- * are too numerous to list here. Please refer to the COPYRIGHT
- * file distributed with this source distribution.
- *
- * 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.
- *
- * $URL$
- * $Id$
- *
- */
-
-/* Song iterators */
-
-#include "common/util.h"
-
-#include "sci/sci.h"
-#ifdef USE_OLD_MUSIC_FUNCTIONS
-
-#include "sci/sound/iterator/iterator_internal.h"
-#include "sci/engine/state.h"	// for sfx_player_tell_synth :/
-#include "sci/sound/iterator/core.h"	// for sfx_player_tell_synth
-
-#include "sound/audiostream.h"
-#include "sound/mixer.h"
-#include "sound/decoders/raw.h"
-
-namespace Sci {
-
-
-static const int MIDI_cmdlen[16] = {0, 0, 0, 0, 0, 0, 0, 0,
-                                    2, 2, 2, 2, 1, 1, 2, 0
-                                   };
-
-/*#define DEBUG_DECODING*/
-/*#define DEBUG_VERBOSE*/
-
-/** Find first set bit in bits and return its index. Returns 0 if bits is 0. */
-static int sci_ffs(int bits) {
-	if (!bits)
-		return 0;
-
-	int retval = 1;
-
-	while (!(bits & 1)) {
-		retval++;
-		bits >>= 1;
-	}
-
-	return retval;
-}
-
-static void print_tabs_id(int nr, songit_id_t id) {
-	while (nr-- > 0)
-		fprintf(stderr, "\t");
-
-	fprintf(stderr, "[%08lx] ", id);
-}
-
-BaseSongIterator::BaseSongIterator(byte *data, uint size, songit_id_t id)
-	: _data(data, size) {
-	ID = id;
-}
-
-/************************************/
-/*-- SCI0 iterator implementation --*/
-/************************************/
-
-#define SCI0_MIDI_OFFSET 33
-#define SCI0_END_OF_SONG 0xfc /* proprietary MIDI command */
-
-#define SCI0_PCM_SAMPLE_RATE_OFFSET 0x0e
-#define SCI0_PCM_SIZE_OFFSET 0x20
-#define SCI0_PCM_DATA_OFFSET 0x2c
-
-#define CHECK_FOR_END_ABSOLUTE(offset) \
-	if (offset > _data.size()) { \
-		warning("Reached end of song without terminator (%x/%x) at %d", offset, _data.size(), __LINE__); \
-		return SI_FINISHED; \
-	}
-
-#define CHECK_FOR_END(offset_augment) \
-	if ((channel->offset + (offset_augment)) > channel->end) { \
-		channel->state = SI_STATE_FINISHED; \
-		warning("Reached end of track %d without terminator (%x+%x/%x) at %d", channel->id, channel->offset, offset_augment, channel->end, __LINE__); \
-		return SI_FINISHED; \
-	}
-
-
-static int _parse_ticks(byte *data, int *offset_p, int size) {
-	int ticks = 0;
-	int tempticks;
-	int offset = 0;
-
-	do {
-		tempticks = data[offset++];
-		ticks += (tempticks == SCI_MIDI_TIME_EXPANSION_PREFIX) ?
-		         SCI_MIDI_TIME_EXPANSION_LENGTH : tempticks;
-	} while (tempticks == SCI_MIDI_TIME_EXPANSION_PREFIX
-	         && offset < size);
-
-	if (offset_p)
-		*offset_p = offset;
-
-	return ticks;
-}
-
-
-static int _sci0_get_pcm_data(Sci0SongIterator *self, int *rate, int *xoffset, uint *xsize);
-
-
-#define PARSE_FLAG_LOOPS_UNLIMITED (1 << 0) /* Unlimited # of loops? */
-#define PARSE_FLAG_PARAMETRIC_CUE (1 << 1) /* Assume that cues take an additional "cue value" argument */
-/* This implements a difference between SCI0 and SCI1 cues. */
-
-void SongIteratorChannel::init(int id_, int offset_, int end_) {
-	playmask = PLAYMASK_NONE; /* Disable all channels */
-	id = id_;
-	state = SI_STATE_DELTA_TIME;
-	loop_timepos = 0;
-	total_timepos = 0;
-	timepos_increment = 0;
-	delay = 0; /* Only used for more than one channel */
-	last_cmd = 0xfe;
-
-	offset = loop_offset = initial_offset = offset_;
-	end = end_;
-}
-
-void SongIteratorChannel::resetSynthChannels() {
-	byte buf[5];
-
-	// FIXME: Evil hack
-	SfxState &sound = g_sci->getEngineState()->_sound;
-
-	for (int i = 0; i < MIDI_CHANNELS; i++) {
-		if (playmask & (1 << i)) {
-			buf[0] = 0xe0 | i; /* Pitch bend */
-			buf[1] = 0x80; /* Wheel center */
-			buf[2] = 0x40;
-			sound.sfx_player_tell_synth(3, buf);
-
-			buf[0] = 0xb0 | i; // Set control
-			buf[1] = 0x40; // Hold pedal
-			buf[2] = 0x00; // Off
-			sound.sfx_player_tell_synth(3, buf);
-			/* TODO: Reset other controls? */
-		}
-	}
-}
-
-int BaseSongIterator::parseMidiCommand(byte *buf, int *result, SongIteratorChannel *channel, int flags) {
-	byte cmd;
-	int paramsleft;
-	int midi_op;
-	int midi_channel;
-
-	channel->state = SI_STATE_DELTA_TIME;
-
-	cmd = _data[channel->offset++];
-
-	if (!(cmd & 0x80)) {
-		/* 'Running status' mode */
-		channel->offset--;
-		cmd = channel->last_cmd;
-	}
-
-	if (cmd == 0xfe) {
-		warning("song iterator subsystem: Corrupted sound resource detected.");
-		return SI_FINISHED;
-	}
-
-	midi_op = cmd >> 4;
-	midi_channel = cmd & 0xf;
-	paramsleft = MIDI_cmdlen[midi_op];
-
-	buf[0] = cmd;
-
-
-	CHECK_FOR_END(paramsleft);
-	memcpy(buf + 1, _data.begin() + channel->offset, paramsleft);
-	*result = 1 + paramsleft;
-
-	channel->offset += paramsleft;
-
-	channel->last_cmd = cmd;
-
-	/* Are we supposed to play this channel? */
-	if (
-	    /* First, exclude "global" properties-- such as cues-- from consideration */
-	    (midi_op < 0xf
-	     && !(cmd == SCI_MIDI_SET_SIGNAL)
-	     && !(SCI_MIDI_CONTROLLER(cmd)
-	          && buf[1] == SCI_MIDI_CUMULATIVE_CUE))
-
-	    /* Next, check if the channel is allowed */
-	    && (!((1 << midi_channel) & channel->playmask)))
-		return  /* Execute next command */
-		    nextCommand(buf, result);
-
-
-	if (cmd == SCI_MIDI_EOT) {
-		/* End of track? */
-		channel->resetSynthChannels();
-		if (_loops > 1) {
-			/* If allowed, decrement the number of loops */
-			if (!(flags & PARSE_FLAG_LOOPS_UNLIMITED))
-				*result = --_loops;
-
-#ifdef DEBUG_DECODING
-			fprintf(stderr, "%s L%d: (%p):%d Looping ", __FILE__, __LINE__, this, channel->id);
-			if (flags & PARSE_FLAG_LOOPS_UNLIMITED)
-				fprintf(stderr, "(indef.)");
-			else
-				fprintf(stderr, "(%d)", _loops);
-			fprintf(stderr, " %x -> %x\n",
-			        channel->offset, channel->loop_offset);
-#endif
-			channel->offset = channel->loop_offset;
-			channel->state = SI_STATE_DELTA_TIME;
-			channel->total_timepos = channel->loop_timepos;
-			channel->last_cmd = 0xfe;
-			debugC(2, kDebugLevelSound, "Looping song iterator %08lx.", ID);
-			return SI_LOOP;
-		} else {
-			channel->state = SI_STATE_FINISHED;
-			return SI_FINISHED;
-		}
-
-	} else if (cmd == SCI_MIDI_SET_SIGNAL) {
-		if (buf[1] == SCI_MIDI_SET_SIGNAL_LOOP) {
-			channel->loop_offset = channel->offset;
-			channel->loop_timepos = channel->total_timepos;
-
-			return /* Execute next command */
-			    nextCommand(buf, result);
-		} else {
-			/* Used to be conditional <= 127 */
-			*result = buf[1]; /* Absolute cue */
-			return SI_ABSOLUTE_CUE;
-		}
-	} else if (SCI_MIDI_CONTROLLER(cmd)) {
-		switch (buf[1]) {
-
-		case SCI_MIDI_CUMULATIVE_CUE:
-			if (flags & PARSE_FLAG_PARAMETRIC_CUE)
-				_ccc += buf[2];
-			else { /* No parameter to CC */
-				_ccc++;
-				/*				channel->offset--; */
-			}
-			*result = _ccc;
-			return SI_RELATIVE_CUE;
-
-		case SCI_MIDI_RESET_ON_SUSPEND:
-			_resetflag = buf[2];
-			break;
-
-		case SCI_MIDI_SET_POLYPHONY:
-			_polyphony[midi_channel] = buf[2];
-			break;
-
-		case SCI_MIDI_SET_REVERB:
-			break;
-
-		case SCI_MIDI_CHANNEL_MUTE:
-			warning("CHANNEL_MUTE(%d, %d)", midi_channel, buf[2]);
-			break;
-
-		case SCI_MIDI_HOLD: {
-			// Safe cast: This controller is only used in SCI1
-			Sci1SongIterator *self1 = (Sci1SongIterator *)this;
-
-			if (buf[2] == self1->_hold) {
-				channel->offset = channel->initial_offset;
-				channel->state = SI_STATE_COMMAND;
-				channel->total_timepos = 0;
-
-				self1->_numLoopedChannels = self1->_numActiveChannels - 1;
-
-				// FIXME:
-				// This implementation of hold breaks getting out of the
-				// limo when visiting the airport near the start of LSL5.
-				// It seems like all channels should be reset here somehow,
-				// but not sure how.
-				// Forcing all channel offsets to 0 seems to fix the hang,
-				// but somehow slows the exit sequence down to take 20 seconds
-				// instead of about 3.
-
-				return SI_LOOP;
-			}
-
-			break;
-		}
-		case 0x04: /* UNKNOWN NYI (happens in LSL2 gameshow) */
-		case 0x46: /* UNKNOWN NYI (happens in LSL3 binoculars) */
-		case 0x61: /* UNKNOWN NYI (special for AdLib? Iceman) */
-		case 0x73: /* UNKNOWN NYI (happens in Hoyle) */
-		case 0xd1: /* UNKNOWN NYI (happens in KQ4 when riding the unicorn) */
-			return /* Execute next command */
-			    nextCommand(buf, result);
-
-		case 0x01: /* modulation */
-		case 0x07: /* volume */
-		case 0x0a: /* panpot */
-		case 0x0b: /* expression */
-		case 0x40: /* hold */
-		case 0x79: /* reset all */
-			/* No special treatment neccessary */
-			break;
-
-		}
-		return 0;
-
-	} else {
-		/* Process as normal MIDI operation */
-		return 0;
-	}
-}
-
-int BaseSongIterator::processMidi(byte *buf, int *result,
-	SongIteratorChannel *channel, int flags) {
-	CHECK_FOR_END(0);
-
-	switch (channel->state) {
-
-	case SI_STATE_PCM: {
-		if (_data[channel->offset] == 0
-		        && _data[channel->offset + 1] == SCI_MIDI_EOT)
-			/* Fake one extra tick to trick the interpreter into not killing the song iterator right away */
-			channel->state = SI_STATE_PCM_MAGIC_DELTA;
-		else
-			channel->state = SI_STATE_DELTA_TIME;
-		return SI_PCM;
-	}
-
-	case SI_STATE_PCM_MAGIC_DELTA: {
-		int rate;
-		int offset;
-		uint size;
-		int delay;
-		if (_sci0_get_pcm_data((Sci0SongIterator *)this, &rate, &offset, &size))
-			return SI_FINISHED; /* 'tis broken */
-		channel->state = SI_STATE_FINISHED;
-		delay = (size * 50 + rate - 1) / rate; /* number of ticks to completion*/
-
-		debugC(2, kDebugLevelSound, "delaying %d ticks", delay);
-		return delay;
-	}
-
-	case SI_STATE_UNINITIALISED:
-		warning("Attempt to read command from uninitialized iterator");
-		init();
-		return nextCommand(buf, result);
-
-	case SI_STATE_FINISHED:
-		return SI_FINISHED;
-
-	case SI_STATE_DELTA_TIME: {
-		int offset;
-		int ticks = _parse_ticks(_data.begin() + channel->offset,
-		                         &offset,
-		                         _data.size() - channel->offset);
-
-		channel->offset += offset;
-		channel->delay += ticks;
-		channel->timepos_increment = ticks;
-
-		CHECK_FOR_END(0);
-
-		channel->state = SI_STATE_COMMAND;
-
-		if (ticks)
-			return ticks;
-	}
-
-	/* continute otherwise... */
-
-	case SI_STATE_COMMAND: {
-		int retval;
-		channel->total_timepos += channel->timepos_increment;
-		channel->timepos_increment = 0;
-
-		retval = parseMidiCommand(buf, result, channel, flags);
-
-		if (retval == SI_FINISHED) {
-			if (_numActiveChannels)
-				--(_numActiveChannels);
-#ifdef DEBUG_DECODING
-			fprintf(stderr, "%s L%d: (%p):%d Finished channel, %d channels left\n",
-			        __FILE__, __LINE__, this, channel->id,
-			        _numActiveChannels);
-#endif
-			/* If we still have channels left... */
-			if (_numActiveChannels) {
-				return nextCommand(buf, result);
-			}
-
-			/* Otherwise, we have reached the end */
-			_loops = 0;
-		}
-
-		return retval;
-	}
-
-	default:
-		error("Invalid iterator state %d", channel->state);
-		return SI_FINISHED;
-	}
-}
-
-int Sci0SongIterator::nextCommand(byte *buf, int *result) {
-	return processMidi(buf, result, &_channel, PARSE_FLAG_PARAMETRIC_CUE);
-}
-
-static int _sci0_header_magic_p(byte *data, int offset, int size) {
-	if (offset + 0x10 > size)
-		return 0;
-	return (data[offset] == 0x1a)
-	    && (data[offset + 1] == 0x00)
-	    && (data[offset + 2] == 0x01)
-	    && (data[offset + 3] == 0x00);
-}
-
-
-static int _sci0_get_pcm_data(Sci0SongIterator *self,
-	int *rate, int *xoffset, uint *xsize) {
-	int tries = 2;
-	bool found_it = false;
-	byte *pcm_data;
-	int size;
-	uint offset = SCI0_MIDI_OFFSET;
-
-	if (self->_data[0] != 2)
-		return 1;
-	/* No such luck */
-
-	while ((tries--) && (offset < self->_data.size()) && (!found_it)) {
-		// Search through the garbage manually
-		// FIXME: Replace offset by an iterator
-		Common::Array<byte>::iterator iter = Common::find(self->_data.begin() + offset, self->_data.end(), SCI0_END_OF_SONG);
-
-		if (iter == self->_data.end()) {
-			warning("Playing unterminated song");
-			return 1;
-		}
-
-		// add one to move it past the END_OF_SONG marker
-		iter++;
-		offset = iter - self->_data.begin();	// FIXME
-
-
-		if (_sci0_header_magic_p(self->_data.begin(), offset, self->_data.size()))
-			found_it = true;
-	}
-
-	if (!found_it) {
-		warning("Song indicates presence of PCM, but"
-		        " none found (finally at offset %04x)", offset);
-
-		return 1;
-	}
-
-	pcm_data = self->_data.begin() + offset;
-
-	size = READ_LE_UINT16(pcm_data + SCI0_PCM_SIZE_OFFSET);
-
-	/* Two of the format parameters are fixed by design: */
-	*rate = READ_LE_UINT16(pcm_data + SCI0_PCM_SAMPLE_RATE_OFFSET);
-
-	if (offset + SCI0_PCM_DATA_OFFSET + size != self->_data.size()) {
-		int d = offset + SCI0_PCM_DATA_OFFSET + size - self->_data.size();
-
-		warning("PCM advertizes %d bytes of data, but %d"
-		        " bytes are trailing in the resource",
-		        size, self->_data.size() - (offset + SCI0_PCM_DATA_OFFSET));
-
-		if (d > 0)
-			size -= d; /* Fix this */
-	}
-
-	*xoffset = offset;
-	*xsize = size;
-
-	return 0;
-}
-
-static Audio::AudioStream *makeStream(byte *data, int size, int rate) {
-	debugC(2, kDebugLevelSound, "Playing PCM data of size %d, rate %d", size, rate);
-
-	// Duplicate the data
-	byte *sound = (byte *)malloc(size);
-	memcpy(sound, data, size);
-
-	// Convert stream format flags
-	int flags = Audio::FLAG_UNSIGNED;
-	return Audio::makeRawStream(sound, size, rate, flags);
-}
-
-Audio::AudioStream *Sci0SongIterator::getAudioStream() {
-	int rate;
-	int offset;
-	uint size;
-	if (_sci0_get_pcm_data(this, &rate, &offset, &size))
-		return NULL;
-
-	_channel.state = SI_STATE_FINISHED; /* Don't play both PCM and music */
-
-	return makeStream(_data.begin() + offset + SCI0_PCM_DATA_OFFSET, size, rate);
-}
-
-SongIterator *Sci0SongIterator::handleMessage(Message msg) {
-	if (msg._class == _SIMSG_BASE) {
-		switch (msg._type) {
-
-		case _SIMSG_BASEMSG_PRINT:
-			print_tabs_id(msg._arg.i, ID);
-			debugC(2, kDebugLevelSound, "SCI0: dev=%d, active-chan=%d, size=%d, loops=%d",
-			        _deviceId, _numActiveChannels, _data.size(), _loops);
-			break;
-
-		case _SIMSG_BASEMSG_SET_LOOPS:
-			_loops = msg._arg.i;
-			break;
-
-		case _SIMSG_BASEMSG_STOP: {
-			songit_id_t sought_id = msg.ID;
-
-			if (sought_id == ID)
-				_channel.state = SI_STATE_FINISHED;
-			break;
-		}
-
-		case _SIMSG_BASEMSG_SET_PLAYMASK: {
-			int i;
-			_deviceId = msg._arg.i;
-
-			/* Set all but the rhytm channel mask bits */
-			_channel.playmask &= ~(1 << MIDI_RHYTHM_CHANNEL);
-
-			for (i = 0; i < MIDI_CHANNELS; i++)
-				if (_data[2 + (i << 1)] & _deviceId
-				        && i != MIDI_RHYTHM_CHANNEL)
-					_channel.playmask |= (1 << i);
-		}
-		break;
-
-		case _SIMSG_BASEMSG_SET_RHYTHM:
-			_channel.playmask &= ~(1 << MIDI_RHYTHM_CHANNEL);
-			if (msg._arg.i)
-				_channel.playmask |= (1 << MIDI_RHYTHM_CHANNEL);
-			break;
-
-		case _SIMSG_BASEMSG_SET_FADE: {
-			fade_params_t *fp = (fade_params_t *) msg._arg.p;
-			fade.action = fp->action;
-			fade.final_volume = fp->final_volume;
-			fade.ticks_per_step = fp->ticks_per_step;
-			fade.step_size = fp->step_size;
-			break;
-		}
-
-		default:
-			return NULL;
-		}
-
-		return this;
-	}
-	return NULL;
-}
-
-int Sci0SongIterator::getTimepos() {
-	return _channel.total_timepos;
-}
-
-Sci0SongIterator::Sci0SongIterator(byte *data, uint size, songit_id_t id)
- : BaseSongIterator(data, size, id) {
-	channel_mask = 0xffff;	// Allocate all channels by default
-	_channel.state = SI_STATE_UNINITIALISED;
-
-	for (int i = 0; i < MIDI_CHANNELS; i++)
-		_polyphony[i] = data[1 + (i << 1)];
-
-	init();
-}
-
-void Sci0SongIterator::init() {
-	fade.action = FADE_ACTION_NONE;
-	_resetflag = 0;
-	_loops = 0;
-	priority = 0;
-
-	_ccc = 0; /* Reset cumulative cue counter */
-	_numActiveChannels = 1;
-	_channel.init(0, SCI0_MIDI_OFFSET, _data.size());
-	_channel.resetSynthChannels();
-
-	if (_data[0] == 2) /* Do we have an embedded PCM? */
-		_channel.state = SI_STATE_PCM;
-}
-
-SongIterator *Sci0SongIterator::clone(int delta) {
-	Sci0SongIterator *newit = new Sci0SongIterator(*this);
-	return newit;
-}
-
-
-/***************************/
-/*-- SCI1 song iterators --*/
-/***************************/
-
-int Sci1SongIterator::initSample(const int offset) {
-	Sci1Sample sample;
-	int rate;
-	int length;
-	int begin;
-	int end;
-
-	CHECK_FOR_END_ABSOLUTE((uint)offset + 10);
-	if (_data[offset + 1] != 0)
-		warning("[iterator-1] In sample at offset 0x04x: Byte #1 is %02x instead of zero",
-		          _data[offset + 1]);
-
-	rate = (int16)READ_LE_UINT16(_data.begin() + offset + 2);
-	length = READ_LE_UINT16(_data.begin() + offset + 4);
-	begin = (int16)READ_LE_UINT16(_data.begin() + offset + 6);
-	end = (int16)READ_LE_UINT16(_data.begin() + offset + 8);
-
-	CHECK_FOR_END_ABSOLUTE((uint)(offset + 10 + length));
-
-	sample.delta = begin;
-	sample.size = length;
-	sample._data = _data.begin() + offset + 10;
-
-#ifdef DEBUG_VERBOSE
-	fprintf(stderr, "[SAMPLE] %x/%x/%x/%x l=%x\n",
-	        offset + 10, begin, end, _data.size(), length);
-#endif
-
-	sample.rate = rate;
-
-	sample.announced = false;
-
-	/* Insert into the sample list at the right spot, keeping it sorted by delta */
-	Common::List<Sci1Sample>::iterator seeker = _samples.begin();
-	while (seeker != _samples.end() && seeker->delta < begin)
-		++seeker;
-	_samples.insert(seeker, sample);
-
-	return 0; /* Everything's fine */
-}
-
-int Sci1SongIterator::initSong() {
-	int last_time;
-	uint offset = 0;
-	_numChannels = 0;
-	_samples.clear();
-//	_deviceId = 0x0c;
-
-	if (_data[offset] == 0xf0) {
-		priority = _data[offset + 1];
-
-		offset += 8;
-	}
-
-	while (_data[offset] != 0xff
-	        && _data[offset] != _deviceId) {
-		offset++;
-		CHECK_FOR_END_ABSOLUTE(offset + 1);
-		while (_data[offset] != 0xff) {
-			CHECK_FOR_END_ABSOLUTE(offset + 7);
-			offset += 6;
-		}
-		offset++;
-	}
-
-	if (_data[offset] == 0xff) {
-		warning("[iterator] Song does not support hardware 0x%02x", _deviceId);
-		return 1;
-	}
-
-	offset++;
-
-	while (_data[offset] != 0xff) { /* End of list? */
-		uint track_offset;
-		int end;
-		offset += 2;
-
-		CHECK_FOR_END_ABSOLUTE(offset + 4);
-
-		track_offset = READ_LE_UINT16(_data.begin() + offset);
-		end = READ_LE_UINT16(_data.begin() + offset + 2);
-
-		CHECK_FOR_END_ABSOLUTE(track_offset - 1);
-
-		if (_data[track_offset] == 0xfe) {
-			if (initSample(track_offset))
-				return 1; /* Error */
-		} else {
-			/* Regular MIDI channel */
-			if (_numChannels >= MIDI_CHANNELS) {
-				warning("[iterator] Song has more than %d channels, cutting them off",
-				          MIDI_CHANNELS);
-				break; /* Scan for remaining samples */
-			} else {
-				int channel_nr = _data[track_offset] & 0xf;
-				SongIteratorChannel &channel = _channels[_numChannels++];
-
-				/*
-				if (_data[track_offset] & 0xf0)
-					printf("Channel %d has mapping bits %02x\n",
-					       channel_nr, _data[track_offset] & 0xf0);
-				*/
-
-				// Add 2 to skip over header bytes */
-				channel.init(channel_nr, track_offset + 2, track_offset + end);
-				channel.resetSynthChannels();
-
-				_polyphony[_numChannels - 1] = _data[channel.offset - 1] & 15;
-
-				channel.playmask = ~0; /* Enable all */
-				channel_mask |= (1 << channel_nr);
-
-				CHECK_FOR_END_ABSOLUTE(offset + end);
-			}
-		}
-		offset += 4;
-		CHECK_FOR_END_ABSOLUTE(offset);
-	}
-
-	/* Now ensure that sample deltas are relative to the previous sample */
-	last_time = 0;
-	_numActiveChannels = _numChannels;
-	_numLoopedChannels = 0;
-
-	for (Common::List<Sci1Sample>::iterator seeker = _samples.begin();
-			seeker != _samples.end(); ++seeker) {
-		int prev_last_time = last_time;
-		//printf("[iterator] Detected sample: %d Hz, %d bytes at time %d\n",
-		//          seeker->format.rate, seeker->size, seeker->delta);
-		last_time = seeker->delta;
-		seeker->delta -= prev_last_time;
-	}
-
-	return 0; /* Success */
-}
-
-int Sci1SongIterator::getSmallestDelta() const {
-	int d = -1;
-	for (int i = 0; i < _numChannels; i++)
-		if (_channels[i].state == SI_STATE_COMMAND
-		        && (d == -1 || _channels[i].delay < d))
-			d = _channels[i].delay;
-
-	if (!_samples.empty() && _samples.begin()->delta < d)
-		return _samples.begin()->delta;
-	else
-		return d;
-}
-
-void Sci1SongIterator::updateDelta(int delta) {
-	if (!_samples.empty())
-		_samples.begin()->delta -= delta;
-
-	for (int i = 0; i < _numChannels; i++)
-		if (_channels[i].state == SI_STATE_COMMAND)
-			_channels[i].delay -= delta;
-}
-
-bool Sci1SongIterator::noDeltaTime() const {
-	for (int i = 0; i < _numChannels; i++)
-		if (_channels[i].state == SI_STATE_DELTA_TIME)
-			return false;
-	return true;
-}
-
-#define COMMAND_INDEX_NONE -1
-#define COMMAND_INDEX_PCM -2
-
-int Sci1SongIterator::getCommandIndex() const {
-	/* Determine the channel # of the next active event, or -1 */
-	int i;
-	int base_delay = 0x7ffffff;
-	int best_chan = COMMAND_INDEX_NONE;
-
-	for (i = 0; i < _numChannels; i++)
-		if ((_channels[i].state != SI_STATE_PENDING)
-		        && (_channels[i].state != SI_STATE_FINISHED))  {
-
-			if ((_channels[i].state == SI_STATE_DELTA_TIME)
-			        && (_channels[i].delay == 0))
-				return i;
-			/* First, read all unknown delta times */
-
-			if (_channels[i].delay < base_delay) {
-				best_chan = i;
-				base_delay = _channels[i].delay;
-			}
-		}
-
-	if (!_samples.empty() && base_delay >= _samples.begin()->delta)
-		return COMMAND_INDEX_PCM;
-
-	return best_chan;
-}
-
-
-Audio::AudioStream *Sci1SongIterator::getAudioStream() {
-	Common::List<Sci1Sample>::iterator sample = _samples.begin();
-	if (sample != _samples.end() && sample->delta <= 0) {
-		Audio::AudioStream *feed = makeStream(sample->_data, sample->size, sample->rate);
-		_samples.erase(sample);
-
-		return feed;
-	} else
-		return NULL;
-}
-
-int Sci1SongIterator::nextCommand(byte *buf, int *result) {
-
-	if (!_initialised) {
-		//printf("[iterator] DEBUG: Initialising for %d\n", _deviceId);
-		_initialised = true;
-		if (initSong())
-			return SI_FINISHED;
-	}
-
-
-	if (_delayRemaining) {
-		int delay = _delayRemaining;
-		_delayRemaining = 0;
-		return delay;
-	}
-
-	int retval = 0;
-	do {	 /* All delays must be processed separately */
-		int chan = getCommandIndex();
-
-		if (chan == COMMAND_INDEX_NONE) {
-			return SI_FINISHED;
-		}
-
-		if (chan == COMMAND_INDEX_PCM) {
-
-			if (_samples.begin()->announced) {
-				/* Already announced; let's discard it */
-				Audio::AudioStream *feed = getAudioStream();
-				delete feed;
-			} else {
-				int delay = _samples.begin()->delta;
-
-				if (delay) {
-					updateDelta(delay);
-					return delay;
-				}
-				/* otherwise we're touching a PCM */
-				_samples.begin()->announced = true;
-				return SI_PCM;
-			}
-		} else { /* Not a PCM */
-
-			retval = processMidi(buf, result,
-			                     &(_channels[chan]),
-			                     PARSE_FLAG_LOOPS_UNLIMITED);
-
-			if (retval == SI_LOOP) {
-				_numLoopedChannels++;
-				_channels[chan].state = SI_STATE_PENDING;
-				_channels[chan].delay = 0;
-
-				if (_numLoopedChannels == _numActiveChannels) {
-					int i;
-
-					/* Everyone's ready: Let's loop */
-					for (i = 0; i < _numChannels; i++)
-						if (_channels[i].state == SI_STATE_PENDING)
-							_channels[i].state = SI_STATE_DELTA_TIME;
-
-					_numLoopedChannels = 0;
-					return SI_LOOP;
-				}
-			} else if (retval == SI_FINISHED) {
-#ifdef DEBUG
-				fprintf(stderr, "FINISHED some channel\n");
-#endif
-			} else if (retval > 0) {
-				int sd ;
-				sd = getSmallestDelta();
-
-				if (noDeltaTime() && sd) {
-					/* No other channel is ready */
-					updateDelta(sd);
-
-					/* Only from here do we return delta times */
-					return sd;
-				}
-			}
-
-		} /* Not a PCM */
-
-	} while (retval > 0);
-
-	return retval;
-}
-
-SongIterator *Sci1SongIterator::handleMessage(Message msg) {
-	if (msg._class == _SIMSG_BASE) { /* May extend this in the future */
-		switch (msg._type) {
-
-		case _SIMSG_BASEMSG_PRINT: {
-			int playmask = 0;
-			int i;
-
-			for (i = 0; i < _numChannels; i++)
-				playmask |= _channels[i].playmask;
-
-			print_tabs_id(msg._arg.i, ID);
-			debugC(2, kDebugLevelSound, "SCI1: chan-nr=%d, playmask=%04x",
-			        _numChannels, playmask);
-		}
-		break;
-
-		case _SIMSG_BASEMSG_STOP: {
-			songit_id_t sought_id = msg.ID;
-			int i;
-
-			if (sought_id == ID) {
-				ID = 0;
-
-				for (i = 0; i < _numChannels; i++)
-					_channels[i].state = SI_STATE_FINISHED;
-			}
-			break;
-		}
-
-		case _SIMSG_BASEMSG_SET_PLAYMASK:
-			if (msg.ID == ID) {
-				channel_mask = 0;
-
-				_deviceId = msg._arg.i;
-
-				if (_initialised) {
-					int i;
-					int toffset = -1;
-
-					for (i = 0; i < _numChannels; i++)
-						if (_channels[i].state != SI_STATE_FINISHED
-						        && _channels[i].total_timepos > toffset) {
-							toffset = _channels[i].total_timepos
-							          + _channels[i].timepos_increment
-							          - _channels[i].delay;
-						}
-
-					/* Find an active channel so that we can
-					** get the correct time offset  */
-
-					initSong();
-
-					toffset -= _delayRemaining;
-					_delayRemaining = 0;
-
-					if (toffset > 0)
-						return new_fast_forward_iterator(this, toffset);
-				} else {
-					initSong();
-					_initialised = true;
-				}
-
-				break;
-
-			}
-
-		case _SIMSG_BASEMSG_SET_LOOPS:
-			if (msg.ID == ID)
-				_loops = (msg._arg.i > 32767) ? 99 : 0;
-			/* 99 is arbitrary, but we can't use '1' because of
-			** the way we're testing in the decoding section.  */
-			break;
-
-		case _SIMSG_BASEMSG_SET_HOLD:
-			_hold = msg._arg.i;
-			break;
-		case _SIMSG_BASEMSG_SET_RHYTHM:
-			/* Ignore */
-			break;
-
-		case _SIMSG_BASEMSG_SET_FADE: {
-			fade_params_t *fp = (fade_params_t *) msg._arg.p;
-			fade.action = fp->action;
-			fade.final_volume = fp->final_volume;
-			fade.ticks_per_step = fp->ticks_per_step;
-			fade.step_size = fp->step_size;
-			break;
-		}
-
-		default:
-			warning("Unsupported command %d to SCI1 iterator", msg._type);
-		}
-		return this;
-	}
-	return NULL;
-}
-
-Sci1SongIterator::Sci1SongIterator(byte *data, uint size, songit_id_t id)
- : BaseSongIterator(data, size, id) {
-	channel_mask = 0; // Defer channel allocation
-
-	for (int i = 0; i < MIDI_CHANNELS; i++)
-		_polyphony[i] = 0; // Unknown
-
-	init();
-}
-
-void Sci1SongIterator::init() {
-	fade.action = FADE_ACTION_NONE;
-	_resetflag = 0;
-	_loops = 0;
-	priority = 0;
-
-	_ccc = 0;
-	_deviceId = 0x00; // Default to Sound Blaster/AdLib for purposes of cue computation
-	_numChannels = 0;
-	_initialised = false;
-	_delayRemaining = 0;
-	_loops = 0;
-	_hold = 0;
-	memset(_polyphony, 0, sizeof(_polyphony));
-}
-
-Sci1SongIterator::~Sci1SongIterator() {
-}
-
-
-SongIterator *Sci1SongIterator::clone(int delta) {
-	Sci1SongIterator *newit = new Sci1SongIterator(*this);
-	newit->_delayRemaining = delta;
-	return newit;
-}
-
-int Sci1SongIterator::getTimepos() {
-	int max = 0;
-	int i;
-
-	for (i = 0; i < _numChannels; i++)
-		if (_channels[i].total_timepos > max)
-			max = _channels[i].total_timepos;
-
-	return max;
-}
-
-/**
- * A song iterator with the purpose of sending notes-off channel commands.
- */
-class CleanupSongIterator : public SongIterator {
-public:
-	CleanupSongIterator(uint channels) {
-		channel_mask = channels;
-		ID = 17;
-	}
-
-	int nextCommand(byte *buf, int *result);
-	Audio::AudioStream *getAudioStream() { return NULL; }
-	SongIterator *handleMessage(Message msg);
-	int getTimepos() { return 0; }
-	SongIterator *clone(int delta) { return new CleanupSongIterator(*this); }
-};
-
-SongIterator *CleanupSongIterator::handleMessage(Message msg) {
-	if (msg._class == _SIMSG_BASEMSG_PRINT && msg._type == _SIMSG_BASEMSG_PRINT) {
-		print_tabs_id(msg._arg.i, ID);
-		debugC(2, kDebugLevelSound, "CLEANUP");
-	}
-
-	return NULL;
-}
-
-int CleanupSongIterator::nextCommand(byte *buf, int *result) {
-	/* Task: Return channel-notes-off for each channel */
-	if (channel_mask) {
-		int bs = sci_ffs(channel_mask) - 1;
-
-		channel_mask &= ~(1 << bs);
-		buf[0] = 0xb0 | bs; /* Controller */
-		buf[1] = SCI_MIDI_CHANNEL_NOTES_OFF;
-		buf[2] = 0; /* Hmm... */
-		*result = 3;
-		return 0;
-	} else
-		return SI_FINISHED;
-}
-
-/**********************/
-/*-- Timer iterator --*/
-/**********************/
-int TimerSongIterator::nextCommand(byte *buf, int *result) {
-	if (_delta) {
-		int d = _delta;
-		_delta = 0;
-		return d;
-	}
-	return SI_FINISHED;
-}
-
-SongIterator *new_timer_iterator(int delta) {
-	return new TimerSongIterator(delta);
-}
-
-/**********************************/
-/*-- Fast-forward song iterator --*/
-/**********************************/
-
-int FastForwardSongIterator::nextCommand(byte *buf, int *result) {
-	if (_delta <= 0)
-		return SI_MORPH; /* Did our duty */
-
-	while (1) {
-		int rv = _delegate->nextCommand(buf, result);
-
-		if (rv > 0) {
-			/* Subtract from the delta we want to wait */
-			_delta -= rv;
-
-			/* Done */
-			if (_delta < 0)
-				return -_delta;
-		}
-
-		if (rv <= 0)
-			return rv;
-	}
-}
-
-Audio::AudioStream *FastForwardSongIterator::getAudioStream() {
-	return _delegate->getAudioStream();
-}
-
-SongIterator *FastForwardSongIterator::handleMessage(Message msg) {
-	if (msg._class == _SIMSG_PLASTICWRAP) {
-		assert(msg._type == _SIMSG_PLASTICWRAP_ACK_MORPH);
-
-		if (_delta <= 0) {
-			SongIterator *it = _delegate;
-			delete this;
-			return it;
-		}
-
-		warning("[ff-iterator] Morphing without need");
-		return this;
-	}
-
-	if (msg._class == _SIMSG_BASE && msg._type == _SIMSG_BASEMSG_PRINT) {
-		print_tabs_id(msg._arg.i, ID);
-		debugC(2, kDebugLevelSound, "FASTFORWARD:");
-		msg._arg.i++;
-	}
-
-	// And continue with the delegate
-	songit_handle_message(&_delegate, msg);
-
-	return NULL;
-}
-
-
-int FastForwardSongIterator::getTimepos() {
-	return _delegate->getTimepos();
-}
-
-FastForwardSongIterator::FastForwardSongIterator(SongIterator *capsit, int delta)
-	: _delegate(capsit), _delta(delta) {
-
-	channel_mask = capsit->channel_mask;
-}
-
-SongIterator *FastForwardSongIterator::clone(int delta) {
-	FastForwardSongIterator *newit = new FastForwardSongIterator(*this);
-	newit->_delegate = _delegate->clone(delta);
-	return newit;
-}
-
-SongIterator *new_fast_forward_iterator(SongIterator *capsit, int delta) {
-	if (capsit == NULL)
-		return NULL;
-
-	FastForwardSongIterator *it = new FastForwardSongIterator(capsit, delta);
-	return it;
-}
-
-
-/********************/
-/*-- Tee iterator --*/
-/********************/
-
-
-static void song_iterator_add_death_listener(SongIterator *it, TeeSongIterator *client) {
-	for (int i = 0; i < SONGIT_MAX_LISTENERS; ++i) {
-		if (it->_deathListeners[i] == 0) {
-			it->_deathListeners[i] = client;
-			return;
-		}
-	}
-	error("FATAL: Too many death listeners for song iterator");
-}
-
-static void song_iterator_remove_death_listener(SongIterator *it, TeeSongIterator *client) {
-	for (int i = 0; i < SONGIT_MAX_LISTENERS; ++i) {
-		if (it->_deathListeners[i] == client) {
-			it->_deathListeners[i] = 0;
-			return;
-		}
-	}
-}
-
-static void song_iterator_transfer_death_listeners(SongIterator *it, SongIterator *it_from) {
-	for (int i = 0; i < SONGIT_MAX_LISTENERS; ++i) {
-		if (it_from->_deathListeners[i])
-			song_iterator_add_death_listener(it, it_from->_deathListeners[i]);
-		it_from->_deathListeners[i] = 0;
-	}
-}
-
-static void songit_tee_death_notification(TeeSongIterator *self, SongIterator *corpse) {
-	if (corpse == self->_children[TEE_LEFT].it) {
-		self->_status &= ~TEE_LEFT_ACTIVE;
-		self->_children[TEE_LEFT].it = NULL;
-	} else if (corpse == self->_children[TEE_RIGHT].it) {
-		self->_status &= ~TEE_RIGHT_ACTIVE;
-		self->_children[TEE_RIGHT].it = NULL;
-	} else {
-		error("songit_tee_death_notification() failed: Breakpoint in %s, line %d", __FILE__, __LINE__);
-	}
-}
-
-TeeSongIterator::TeeSongIterator(SongIterator *left, SongIterator *right) {
-	int i;
-	int firstfree = 1; /* First free channel */
-	int incomplete_map = 0;
-
-	_readyToMorph = false;
-	_status = TEE_LEFT_ACTIVE | TEE_RIGHT_ACTIVE;
-
-	_children[TEE_LEFT].it = left;
-	_children[TEE_RIGHT].it = right;
-
-	/* Default to lhs channels */
-	channel_mask = left->channel_mask;
-	for (i = 0; i < 16; i++)
-		if (channel_mask & (1 << i) & right->channel_mask
-		        && (i != MIDI_RHYTHM_CHANNEL) /* Share rhythm */) { /*conflict*/
-			while ((firstfree == MIDI_RHYTHM_CHANNEL)
-			        /* Either if it's the rhythm channel or if it's taken */
-			        || (firstfree < MIDI_CHANNELS
-			            && ((1 << firstfree) & channel_mask)))
-				++firstfree;
-
-			if (firstfree == MIDI_CHANNELS) {
-				incomplete_map = 1;
-				//warning("[songit-tee <%08lx,%08lx>] Could not remap right channel #%d: Out of channels",
-				//        left->ID, right->ID, i);
-			} else {
-				_children[TEE_RIGHT].it->channel_remap[i] = firstfree;
-
-				channel_mask |= (1 << firstfree);
-			}
-		}
-#ifdef DEBUG_TEE_ITERATOR
-	if (incomplete_map) {
-		int c;
-		fprintf(stderr, "[songit-tee <%08lx,%08lx>] Channels:"
-		        " %04x <- %04x | %04x\n",
-		        left->ID, right->ID,
-		        channel_mask,
-		        left->channel_mask, right->channel_mask);
-		for (c = 0 ; c < 2; c++)
-			for (i = 0 ; i < 16; i++)
-				fprintf(stderr, "  map [%d][%d] -> %d\n",
-				        c, i, _children[c].it->channel_remap[i]);
-	}
-#endif
-
-
-	song_iterator_add_death_listener(left, this);
-	song_iterator_add_death_listener(right, this);
-}
-
-TeeSongIterator::~TeeSongIterator() {
-	// When we die, remove any listeners from our children
-	if (_children[TEE_LEFT].it) {
-		song_iterator_remove_death_listener(_children[TEE_LEFT].it, this);
-	}
-
-	if (_children[TEE_RIGHT].it) {
-		song_iterator_remove_death_listener(_children[TEE_RIGHT].it, this);
-	}
-}
-
-
-int TeeSongIterator::nextCommand(byte *buf, int *result) {
-	static const int ready_masks[2] = {TEE_LEFT_READY, TEE_RIGHT_READY};
-	static const int active_masks[2] = {TEE_LEFT_ACTIVE, TEE_RIGHT_ACTIVE};
-	static const int pcm_masks[2] = {TEE_LEFT_PCM, TEE_RIGHT_PCM};
-	int i;
-	int retid;
-
-#ifdef DEBUG_TEE_ITERATOR
-	fprintf(stderr, "[Tee] %02x\n", _status);
-#endif
-
-	if (!(_status & (TEE_LEFT_ACTIVE | TEE_RIGHT_ACTIVE)))
-		/* None is active? */
-		return SI_FINISHED;
-
-	if (_readyToMorph)
-		return SI_MORPH;
-
-	if ((_status & (TEE_LEFT_ACTIVE | TEE_RIGHT_ACTIVE))
-	        != (TEE_LEFT_ACTIVE | TEE_RIGHT_ACTIVE)) {
-		/* Not all are is active? */
-		int which = 0;
-#ifdef DEBUG_TEE_ITERATOR
-		fprintf(stderr, "\tRequesting transformation...\n");
-#endif
-		if (_status & TEE_LEFT_ACTIVE)
-			which = TEE_LEFT;
-		else if (_status & TEE_RIGHT_ACTIVE)
-			which = TEE_RIGHT;
-		memcpy(buf, _children[which].buf, sizeof(buf));
-		*result = _children[which].result;
-		_readyToMorph = true;
-		return _children[which].retval;
-	}
-
-	/* First, check for unreported PCMs */
-	for (i = TEE_LEFT; i <= TEE_RIGHT; i++)
-		if ((_status & (ready_masks[i] | pcm_masks[i]))
-		        == (ready_masks[i] | pcm_masks[i])) {
-			_status &= ~ready_masks[i];
-			return SI_PCM;
-		}
-
-	for (i = TEE_LEFT; i <= TEE_RIGHT; i++)
-		if (!(_status & ready_masks[i])) {
-
-			/* Buffers aren't ready yet */
-			_children[i].retval =
-			    songit_next(&(_children[i].it),
-			                _children[i].buf,
-			                &(_children[i].result),
-			                IT_READER_MASK_ALL
-			                | IT_READER_MAY_FREE
-			                | IT_READER_MAY_CLEAN);
-
-			_status |= ready_masks[i];
-#ifdef DEBUG_TEE_ITERATOR
-			fprintf(stderr, "\t Must check %d: %d\n", i, _children[i].retval);
-#endif
-
-			if (_children[i].retval == SI_ABSOLUTE_CUE ||
-			        _children[i].retval == SI_RELATIVE_CUE)
-				return _children[i].retval;
-			if (_children[i].retval == SI_FINISHED) {
-				_status &= ~active_masks[i];
-				/* Recurse to complete */
-#ifdef DEBUG_TEE_ITERATOR
-				fprintf(stderr, "\t Child %d signalled completion, recursing w/ status %02x\n", i, _status);
-#endif
-				return nextCommand(buf, result);
-			} else if (_children[i].retval == SI_PCM) {
-				_status |= pcm_masks[i];
-				_status &= ~ready_masks[i];
-				return SI_PCM;
-			}
-		}
-
-
-	/* We've already handled PCM, MORPH and FINISHED, CUEs & LOOP remain */
-
-	retid = TEE_LEFT;
-	if ((_children[TEE_LEFT].retval > 0)
-	        /* Asked to delay */
-	        && (_children[TEE_RIGHT].retval <= _children[TEE_LEFT].retval))
-		/* Is not delaying or not delaying as much */
-		retid = TEE_RIGHT;
-
-#ifdef DEBUG_TEE_ITERATOR
-	fprintf(stderr, "\tl:%d / r:%d / chose %d\n",
-	        _children[TEE_LEFT].retval, _children[TEE_RIGHT].retval, retid);
-#endif
-
-	/* Adjust delta times */
-	if (_children[retid].retval > 0
-	        && _children[1-retid].retval > 0) {
-		if (_children[1-retid].retval
-		        == _children[retid].retval)
-			/* If both _children wait the same amount of time,
-			** we have to re-fetch commands from both  */
-			_status &= ~ready_masks[1-retid];
-		else
-			/* If they don't, we can/must re-use the other
-			** child's delay time  */
-			_children[1-retid].retval
-			-= _children[retid].retval;
-	}
-
-	_status &= ~ready_masks[retid];
-	memcpy(buf, _children[retid].buf, sizeof(buf));
-	*result = _children[retid].result;
-
-	return _children[retid].retval;
-}
-
-Audio::AudioStream *TeeSongIterator::getAudioStream() {
-	static const int pcm_masks[2] = {TEE_LEFT_PCM, TEE_RIGHT_PCM};
-	int i;
-
-	for (i = TEE_LEFT; i <= TEE_RIGHT; i++)
-		if (_status & pcm_masks[i]) {
-			_status &= ~pcm_masks[i];
-			return _children[i].it->getAudioStream();
-		}
-
-	return NULL; // No iterator
-}
-
-SongIterator *TeeSongIterator::handleMessage(Message msg) {
-	if (msg._class == _SIMSG_PLASTICWRAP) {
-		assert(msg._type == _SIMSG_PLASTICWRAP_ACK_MORPH);
-
-		SongIterator *old_it;
-		if (!(_status & (TEE_LEFT_ACTIVE | TEE_RIGHT_ACTIVE))) {
-			delete this;
-			return NULL;
-		} else if (!(_status & TEE_LEFT_ACTIVE)) {
-			delete _children[TEE_LEFT].it;
-			_children[TEE_LEFT].it = 0;
-			old_it = _children[TEE_RIGHT].it;
-			song_iterator_remove_death_listener(old_it, this);
-			song_iterator_transfer_death_listeners(old_it, this);
-			delete this;
-			return old_it;
-		} else if (!(_status & TEE_RIGHT_ACTIVE)) {
-			delete _children[TEE_RIGHT].it;
-			_children[TEE_RIGHT].it = 0;
-			old_it = _children[TEE_LEFT].it;
-			song_iterator_remove_death_listener(old_it, this);
-			song_iterator_transfer_death_listeners(old_it, this);
-			delete this;
-			return old_it;
-		}
-
-		warning("[tee-iterator] Morphing without need");
-		return this;
-	}
-
-	if (msg._class == _SIMSG_BASE && msg._type == _SIMSG_BASEMSG_PRINT) {
-		print_tabs_id(msg._arg.i, ID);
-		debugC(2, kDebugLevelSound, "TEE:");
-		msg._arg.i++;
-	}
-
-	// And continue with the children
-	if (_children[TEE_LEFT].it)
-		songit_handle_message(&(_children[TEE_LEFT].it), msg);
-	if (_children[TEE_RIGHT].it)
-		songit_handle_message(&(_children[TEE_RIGHT].it), msg);
-
-	return NULL;
-}
-
-void TeeSongIterator::init() {
-	_status = TEE_LEFT_ACTIVE | TEE_RIGHT_ACTIVE;
-	_children[TEE_LEFT].it->init();
-	_children[TEE_RIGHT].it->init();
-}
-
-SongIterator *TeeSongIterator::clone(int delta) {
-	TeeSongIterator *newit = new TeeSongIterator(*this);
-
-	if (_children[TEE_LEFT].it)
-		newit->_children[TEE_LEFT].it = _children[TEE_LEFT].it->clone(delta);
-	if (_children[TEE_RIGHT].it)
-		newit->_children[TEE_RIGHT].it = _children[TEE_RIGHT].it->clone(delta);
-
-	return newit;
-}
-
-
-/*************************************/
-/*-- General purpose functionality --*/
-/*************************************/
-
-int songit_next(SongIterator **it, byte *buf, int *result, int mask) {
-	int retval;
-
-	if (!*it)
-		return SI_FINISHED;
-
-	do {
-		retval = (*it)->nextCommand(buf, result);
-		if (retval == SI_MORPH) {
-			debugC(2, kDebugLevelSound, "  Morphing %p (stored at %p)", (void *)*it, (void *)it);
-			if (!SIMSG_SEND((*it), SIMSG_ACK_MORPH)) {
-				error("SI_MORPH failed. Breakpoint in %s, line %d", __FILE__, __LINE__);
-			} else
-				debugC(2, kDebugLevelSound, "SI_MORPH successful");
-		}
-
-		if (retval == SI_FINISHED)
-			debugC(2, kDebugLevelSound, "[song-iterator] Song finished. mask = %04x, cm=%04x",
-			        mask, (*it)->channel_mask);
-		if (retval == SI_FINISHED
-		        && (mask & IT_READER_MAY_CLEAN)
-		        && (*it)->channel_mask) { /* This last test will fail
-					       ** with a terminated
-					       ** cleanup iterator */
-			int channel_mask = (*it)->channel_mask;
-
-			SongIterator *old_it = *it;
-			*it = new CleanupSongIterator(channel_mask);
-			for(uint i = 0; i < MIDI_CHANNELS; i++)
-				(*it)->channel_remap[i] = old_it->channel_remap[i];
-			song_iterator_transfer_death_listeners(*it, old_it);
-			if (mask & IT_READER_MAY_FREE)
-				delete old_it;
-			retval = -9999; /* Continue */
-		}
-	} while (!(  /* Until one of the following holds */
-	             (retval > 0 && (mask & IT_READER_MASK_DELAY))
-	             || (retval == 0 && (mask & IT_READER_MASK_MIDI))
-	             || (retval == SI_LOOP && (mask & IT_READER_MASK_LOOP))
-	             || (retval == SI_ABSOLUTE_CUE &&
-	                 (mask & IT_READER_MASK_CUE))
-	             || (retval == SI_RELATIVE_CUE &&
-	                 (mask & IT_READER_MASK_CUE))
-	             || (retval == SI_PCM && (mask & IT_READER_MASK_PCM))
-	             || (retval == SI_FINISHED)
-	         ));
-
-	if (retval == SI_FINISHED && (mask & IT_READER_MAY_FREE)) {
-		delete *it;
-		*it = NULL;
-	}
-
-	return retval;
-}
-
-SongIterator::SongIterator() {
-	ID = 0;
-	channel_mask = 0;
-	fade.action = FADE_ACTION_NONE;
-	priority = 0;
-	memset(_deathListeners, 0, sizeof(_deathListeners));
-
-	// By default, don't remap
-	for (uint i = 0; i < 16; i++)
-		channel_remap[i] = i;
-}
-
-SongIterator::SongIterator(const SongIterator &si) {
-	ID = si.ID;
-	channel_mask = si.channel_mask;
-	fade = si.fade;
-	priority = si.priority;
-	memset(_deathListeners, 0, sizeof(_deathListeners));
-
-	for (uint i = 0; i < 16; i++)
-		channel_remap[i] = si.channel_remap[i];
-}
-
-
-SongIterator::~SongIterator() {
-	for (int i = 0; i < SONGIT_MAX_LISTENERS; ++i)
-		if (_deathListeners[i])
-			songit_tee_death_notification(_deathListeners[i], this);
-}
-
-SongIterator *songit_new(byte *data, uint size, SongIteratorType type, songit_id_t id) {
-	BaseSongIterator *it;
-
-	if (!data || size < 22) {
-		warning("Attempt to instantiate song iterator for null song data");
-		return NULL;
-	}
-
-
-	switch (type) {
-	case SCI_SONG_ITERATOR_TYPE_SCI0:
-		it = new Sci0SongIterator(data, size, id);
-		break;
-
-	case SCI_SONG_ITERATOR_TYPE_SCI1:
-		it = new Sci1SongIterator(data, size, id);
-		break;
-
-	default:
-		/**-- Invalid/unsupported sound resources --**/
-		warning("Attempt to instantiate invalid/unknown song iterator type %d", type);
-		return NULL;
-	}
-
-	return it;
-}
-
-int songit_handle_message(SongIterator **it_reg_p, SongIterator::Message msg) {
-	SongIterator *it = *it_reg_p;
-	SongIterator *newit;
-
-	newit = it->handleMessage(msg);
-
-	if (!newit)
-		return 0; /* Couldn't handle */
-
-	*it_reg_p = newit; /* Might have self-morphed */
-	return 1;
-}
-
-SongIterator *sfx_iterator_combine(SongIterator *it1, SongIterator *it2) {
-	if (it1 == NULL)
-		return it2;
-	if (it2 == NULL)
-		return it1;
-
-	/* Both are non-NULL: */
-	return new TeeSongIterator(it1, it2);
-}
-
-} // End of namespace Sci
-
-#endif	// USE_OLD_MUSIC_FUNCTIONS