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Diffstat (limited to 'engines/sci/sfx/iterator/iterator.cpp')
| -rw-r--r-- | engines/sci/sfx/iterator/iterator.cpp | 1707 |
1 files changed, 0 insertions, 1707 deletions
diff --git a/engines/sci/sfx/iterator/iterator.cpp b/engines/sci/sfx/iterator/iterator.cpp deleted file mode 100644 index 924e1de0bc..0000000000 --- a/engines/sci/sfx/iterator/iterator.cpp +++ /dev/null @@ -1,1707 +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/sfx/iterator/iterator_internal.h" -#include "sci/engine/state.h" // for sfx_player_tell_synth :/ -#include "sci/sfx/iterator/core.h" // for sfx_player_tell_synth - -#include "sound/audiostream.h" -#include "sound/mixer.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 = ((SciEngine*)g_engine)->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]; - -#if 0 - if (1) { - fprintf(stderr, "[IT]: off=%x, cmd=%02x, takes %d args ", - channel->offset - 1, cmd, paramsleft); - fprintf(stderr, "[%02x %02x <%02x> %02x %02x %02x]\n", - _data[channel->offset-3], - _data[channel->offset-2], - _data[channel->offset-1], - _data[channel->offset], - _data[channel->offset+1], - _data[channel->offset+2]); - } -#endif - - 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.\n", 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]; - -#if 0 - { - Sci1SongIterator *self1 = (Sci1SongIterator *)this; - int i; - int voices = 0; - for (i = 0; i < self1->_numChannels; i++) { - voices += _polyphony[i]; - } - - printf("SET_POLYPHONY(%d, %d) for a total of %d voices\n", midi_channel, buf[2], voices); - printf("[iterator] DEBUG: Polyphony = [ "); - for (i = 0; i < self1->_numChannels; i++) - printf("%d ", _polyphony[i]); - printf("]\n"); - printf("[iterator] DEBUG: Importance = [ "); - printf("]\n"); - } -#endif - 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 { -#if 0 - /* Perform remapping, if neccessary */ - if (cmd != SCI_MIDI_SET_SIGNAL - && cmd < 0xf0) { /* Not a generic command */ - int chan = cmd & 0xf; - int op = cmd & 0xf0; - - chan = channel_remap[chan]; - buf[0] = chan | op; - } -#endif - - /* 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\n", 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\n", size, rate); - - // Duplicate the data - byte *sound = (byte *)malloc(size); - memcpy(sound, data, size); - - // Convert stream format flags - int flags = Audio::Mixer::FLAG_AUTOFREE | Audio::Mixer::FLAG_UNSIGNED; - return Audio::makeLinearInputStream(sound, size, rate, flags, 0, 0); -} - -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\n", - _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 --*/ -/***************************/ - -#define SCI01_INVALID_DEVICE 0xff - -/* Second index determines whether PCM output is supported */ -static const int sci0_to_sci1_device_map[][2] = { - {0x06, 0x0c}, /* MT-32 */ - {0xff, 0xff}, /* YM FB-01 */ - {0x00, 0x00}, /* CMS/Game Blaster-- we assume OPL/2 here... */ - {0xff, 0xff}, /* Casio MT540/CT460 */ - {0x13, 0x13}, /* Tandy 3-voice */ - {0x12, 0x12}, /* PC speaker */ - {0xff, 0xff}, - {0xff, 0xff}, -}; /* Maps bit number to device ID */ - -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\n", - _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 - = sci0_to_sci1_device_map - [sci_ffs(msg._arg.i & 0xff) - 1] - [g_system->getMixer()->isReady()] - ; - - if (_deviceId == 0xff) { - warning("[iterator] Device %d(%d) not supported", - msg._arg.i & 0xff, g_system->getMixer()->isReady()); - } - 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\n"); - } - - 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:\n"); - 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:\n"); - 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)\n", (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\n"); - } - - if (retval == SI_FINISHED) - debugC(2, kDebugLevelSound, "[song-iterator] Song finished. mask = %04x, cm=%04x\n", - 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 |