Renamed /gui to /graphics and /sfx to /sound, to better illustrate their purpose

svn-id: r47007

1 files changed, 0 insertions, 676 deletions

diff --git a/engines/sci/sfx/softseq/amiga.cpp b/engines/sci/sfx/softseq/amiga.cpp
deleted file mode 100644
index d16e82fab5..0000000000
--- a/engines/sci/sfx/softseq/amiga.cpp
+++ /dev/null
@@ -1,676 +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.
- *
- * $URL$
- * $Id$
- *
- */
-
-#include "sound/softsynth/emumidi.h"
-#include "sci/sfx/softseq/mididriver.h"
-
-#include "common/file.h"
-#include "common/frac.h"
-#include "common/util.h"
-
-namespace Sci {
-
-/* #define DEBUG */
-
-// Frequencies for every note
-// FIXME Store only one octave
-static const int freq_table[] = {
-	58, 62, 65, 69, 73, 78, 82, 87,
-	92, 98, 104, 110, 117, 124, 131, 139,
-	147, 156, 165, 175, 185, 196, 208, 220,
-	234, 248, 262, 278, 294, 312, 331, 350,
-	371, 393, 417, 441, 468, 496, 525, 556,
-	589, 625, 662, 701, 743, 787, 834, 883,
-	936, 992, 1051, 1113, 1179, 1250, 1324, 1403,
-	1486, 1574, 1668, 1767, 1872, 1984, 2102, 2227,
-	2359, 2500, 2648, 2806, 2973, 3149, 3337, 3535,
-	3745, 3968, 4204, 4454, 4719, 5000, 5297, 5612,
-	5946, 6299, 6674, 7071, 7491, 7937, 8408, 8908,
-	9438, 10000, 10594, 11224, 11892, 12599, 13348, 14142,
-	14983, 15874, 16817, 17817, 18877, 20000, 21189, 22449,
-	23784, 25198, 26696, 28284, 29966, 31748, 33635, 35635,
-	37754, 40000, 42378, 44898, 47568, 50396, 53393, 56568,
-	59932, 63496, 67271, 71271, 75509, 80000, 84757, 89796
-};
-
-class MidiDriver_Amiga : public MidiDriver_Emulated {
-public:
-	enum {
-		kVoices = 4
-	};
-
-	MidiDriver_Amiga(Audio::Mixer *mixer) : MidiDriver_Emulated(mixer), _playSwitch(true), _masterVolume(15) { }
-	virtual ~MidiDriver_Amiga() { }
-
-	// MidiDriver
-	int open();
-	void close();
-	void send(uint32 b);
-	MidiChannel *allocateChannel() { return NULL; }
-	MidiChannel *getPercussionChannel() { return NULL; }
-
-	// AudioStream
-	bool isStereo() const { return true; }
-	int getRate() const { return _mixer->getOutputRate(); }
-
-	// MidiDriver_Emulated
-	void generateSamples(int16 *buf, int len);
-
-	void setVolume(byte volume);
-	void playSwitch(bool play);
-	virtual uint32 property(int prop, uint32 param);
-
-private:
-	enum {
-		kModeLoop = 1 << 0, // Instrument looping flag
-		kModePitch = 1 << 1 // Instrument pitch changes flag
-	};
-
-	enum {
-		kChannels = 10,
-		kBaseFreq = 20000, // Samplerate of the instrument bank
-		kPanLeft = 91,
-		kPanRight = 164
-	};
-
-	struct Channel {
-		int instrument;
-		int volume;
-		int pan;
-	};
-
-	struct Envelope {
-		int length; // Phase period length in samples
-		int delta; // Velocity delta per period
-		int target; // Target velocity
-	};
-
-	struct Voice {
-		int instrument;
-		int note;
-		int note_velocity;
-		int velocity;
-		int envelope;
-		int envelope_samples; // Number of samples till next envelope event
-		int decay;
-		int looping;
-		int hw_channel;
-		frac_t offset;
-		frac_t rate;
-	};
-
-	struct Instrument {
-		char name[30];
-		int mode;
-		int size; // Size of non-looping part in bytes
-		int loop_size; // Starting offset and size of loop in bytes
-		int transpose; // Transpose value in semitones
-		Envelope envelope[4]; // Envelope
-		int8 *samples;
-		int8 *loop;
-	};
-
-	struct Bank {
-		char name[30];
-		uint size;
-		Instrument *instruments[256];
-	};
-
-	bool _playSwitch;
-	int _masterVolume;
-	int _frequency;
-	Envelope _envDecay;
-	Bank _bank; // Instrument bank
-
-	Channel _channels[MIDI_CHANNELS];
-	/* Internal channels */
-	Voice _voices[kChannels];
-
-	void setEnvelope(Voice *channel, Envelope *envelope, int phase);
-	int interpolate(int8 *samples, frac_t offset);
-	void playInstrument(int16 *dest, Voice *channel, int count);
-	void changeInstrument(int channel, int instrument);
-	void stopChannel(int ch);
-	void stopNote(int ch, int note);
-	void startNote(int ch, int note, int velocity);
-	Instrument *readInstrument(Common::File &file, int *id);
-};
-
-void MidiDriver_Amiga::setEnvelope(Voice *channel, Envelope *envelope, int phase) {
-	channel->envelope = phase;
-	channel->envelope_samples = envelope[phase].length;
-
-	if (phase == 0)
-		channel->velocity = channel->note_velocity / 2;
-	else
-		channel->velocity = envelope[phase - 1].target;
-}
-
-int MidiDriver_Amiga::interpolate(int8 *samples, frac_t offset) {
-	int x = fracToInt(offset);
-	int diff = (samples[x + 1] - samples[x]) << 8;
-
-	return (samples[x] << 8) + fracToInt(diff * (offset & FRAC_LO_MASK));
-}
-
-void MidiDriver_Amiga::playInstrument(int16 *dest, Voice *channel, int count) {
-	int index = 0;
-	int vol = _channels[channel->hw_channel].volume;
-	Instrument *instrument = _bank.instruments[channel->instrument];
-
-	while (1) {
-		/* Available source samples until end of segment */
-		frac_t lin_avail;
-		int seg_end, rem, i, amount;
-		int8 *samples;
-
-		if (channel->looping) {
-			samples = instrument->loop;
-			seg_end = instrument->loop_size;
-		} else {
-			samples = instrument->samples;
-			seg_end = instrument->size;
-		}
-
-		lin_avail = intToFrac(seg_end) - channel->offset;
-
-		rem = count - index;
-
-		/* Amount of destination samples that we will compute this iteration */
-		amount = lin_avail / channel->rate;
-
-		if (lin_avail % channel->rate)
-			amount++;
-
-		if (amount > rem)
-			amount = rem;
-
-		/* Stop at next envelope event */
-		if ((channel->envelope_samples != -1) && (amount > channel->envelope_samples))
-			amount = channel->envelope_samples;
-
-		for (i = 0; i < amount; i++) {
-			dest[index++] = interpolate(samples, channel->offset) * channel->velocity / 64 * channel->note_velocity * vol / (127 * 127);
-			channel->offset += channel->rate;
-		}
-
-		if (channel->envelope_samples != -1)
-			channel->envelope_samples -= amount;
-
-		if (channel->envelope_samples == 0) {
-			Envelope *envelope;
-			int delta, target, velocity;
-
-			if (channel->decay)
-				envelope = &_envDecay;
-			else
-				envelope = &instrument->envelope[channel->envelope];
-
-			delta = envelope->delta;
-			target = envelope->target;
-			velocity = channel->velocity - envelope->delta;
-
-			/* Check whether we have reached the velocity target for the current phase */
-			if ((delta >= 0 && velocity <= target) || (delta < 0 && velocity >= target)) {
-				channel->velocity = target;
-
-				/* Stop note after velocity has dropped to 0 */
-				if (target == 0) {
-					channel->note = -1;
-					break;
-				} else
-					switch (channel->envelope) {
-					case 0:
-					case 2:
-						/* Go to next phase */
-						setEnvelope(channel, instrument->envelope, channel->envelope + 1);
-						break;
-					case 1:
-					case 3:
-						/* Stop envelope */
-						channel->envelope_samples = -1;
-						break;
-					}
-			} else {
-				/* We haven't reached the target yet */
-				channel->envelope_samples = envelope->length;
-				channel->velocity = velocity;
-			}
-		}
-
-		if (index == count)
-			break;
-
-		if (fracToInt(channel->offset) >= seg_end) {
-			if (instrument->mode & kModeLoop) {
-				/* Loop the samples */
-				channel->offset -= intToFrac(seg_end);
-				channel->looping = 1;
-			} else {
-				/* All samples have been played */
-				channel->note = -1;
-				break;
-			}
-		}
-	}
-}
-
-void MidiDriver_Amiga::changeInstrument(int channel, int instrument) {
-#ifdef DEBUG
-	if (_bank.instruments[instrument])
-		printf("[sfx:seq:amiga] Setting channel %i to \"%s\" (%i)\n", channel, _bank.instruments[instrument]->name, instrument);
-	else
-		warning("[sfx:seq:amiga] instrument %i does not exist (channel %i)", instrument, channel);
-#endif
-	_channels[channel].instrument = instrument;
-}
-
-void MidiDriver_Amiga::stopChannel(int ch) {
-	int i;
-
-	/* Start decay phase for note on this hw channel, if any */
-	for (i = 0; i < kChannels; i++)
-		if (_voices[i].note != -1 && _voices[i].hw_channel == ch && !_voices[i].decay) {
-			/* Trigger fast decay envelope */
-			_voices[i].decay = 1;
-			_voices[i].envelope_samples = _envDecay.length;
-			break;
-		}
-}
-
-void MidiDriver_Amiga::stopNote(int ch, int note) {
-	int channel;
-	Instrument *instrument;
-
-	for (channel = 0; channel < kChannels; channel++)
-		if (_voices[channel].note == note && _voices[channel].hw_channel == ch && !_voices[channel].decay)
-			break;
-
-	if (channel == kChannels) {
-#ifdef DEBUG
-		warning("[sfx:seq:amiga] cannot stop note %i on channel %i", note, ch);
-#endif
-		return;
-	}
-
-	instrument = _bank.instruments[_voices[channel].instrument];
-
-	/* Start the envelope phases for note-off if looping is on and envelope is enabled */
-	if ((instrument->mode & kModeLoop) && (instrument->envelope[0].length != 0))
-		setEnvelope(&_voices[channel], instrument->envelope, 2);
-}
-
-void MidiDriver_Amiga::startNote(int ch, int note, int velocity) {
-	Instrument *instrument;
-	int channel;
-
-	if (_channels[ch].instrument < 0 || _channels[ch].instrument > 255) {
-		warning("[sfx:seq:amiga] invalid instrument %i on channel %i", _channels[ch].instrument, ch);
-		return;
-	}
-
-	instrument = _bank.instruments[_channels[ch].instrument];
-
-	if (!instrument) {
-		warning("[sfx:seq:amiga] instrument %i does not exist", _channels[ch].instrument);
-		return;
-	}
-
-	for (channel = 0; channel < kChannels; channel++)
-		if (_voices[channel].note == -1)
-			break;
-
-	if (channel == kChannels) {
-		warning("[sfx:seq:amiga] could not find a free channel");
-		return;
-	}
-
-	stopChannel(ch);
-
-	if (instrument->mode & kModePitch) {
-		int fnote = note + instrument->transpose;
-
-		if (fnote < 0 || fnote > 127) {
-			warning("[sfx:seq:amiga] illegal note %i\n", fnote);
-			return;
-		}
-
-		/* Compute rate for note */
-		_voices[channel].rate = doubleToFrac(freq_table[fnote] / (double) _frequency);
-	} else
-		_voices[channel].rate = doubleToFrac(kBaseFreq / (double) _frequency);
-
-	_voices[channel].instrument = _channels[ch].instrument;
-	_voices[channel].note = note;
-	_voices[channel].note_velocity = velocity;
-
-	if ((instrument->mode & kModeLoop) && (instrument->envelope[0].length != 0))
-		setEnvelope(&_voices[channel], instrument->envelope, 0);
-	else {
-		_voices[channel].velocity = 64;
-		_voices[channel].envelope_samples = -1;
-	}
-
-	_voices[channel].offset = 0;
-	_voices[channel].hw_channel = ch;
-	_voices[channel].decay = 0;
-	_voices[channel].looping = 0;
-}
-
-MidiDriver_Amiga::Instrument *MidiDriver_Amiga::readInstrument(Common::File &file, int *id) {
-	Instrument *instrument;
-	byte header[61];
-	int size;
-	int seg_size[3];
-	int loop_offset;
-	int i;
-
-	if (file.read(header, 61) < 61) {
-		warning("[sfx:seq:amiga] failed to read instrument header");
-		return NULL;
-	}
-
-	instrument = new Instrument;
-
-	seg_size[0] = READ_BE_UINT16(header + 35) * 2;
-	seg_size[1] = READ_BE_UINT16(header + 41) * 2;
-	seg_size[2] = READ_BE_UINT16(header + 47) * 2;
-
-	instrument->mode = header[33];
-	instrument->transpose = (int8) header[34];
-	for (i = 0; i < 4; i++) {
-		int length = (int8) header[49 + i];
-
-		if (length == 0 && i > 0)
-			length = 256;
-
-		instrument->envelope[i].length = length * _frequency / 60;
-		instrument->envelope[i].delta = (int8)header[53 + i];
-		instrument->envelope[i].target = header[57 + i];
-	}
-	/* Final target must be 0 */
-	instrument->envelope[3].target = 0;
-
-	loop_offset = READ_BE_UINT32(header + 37) & ~1;
-	size = seg_size[0] + seg_size[1] + seg_size[2];
-
-	*id = READ_BE_UINT16(header);
-
-	strncpy(instrument->name, (char *) header + 2, 29);
-	instrument->name[29] = 0;
-#ifdef DEBUG
-	printf("[sfx:seq:amiga] Reading instrument %i: \"%s\" (%i bytes)\n",
-	          *id, instrument->name, size);
-	printf("                Mode: %02x\n", instrument->mode);
-	printf("                Looping: %s\n", instrument->mode & kModeLoop ? "on" : "off");
-	printf("                Pitch changes: %s\n", instrument->mode & kModePitch ? "on" : "off");
-	printf("                Segment sizes: %i %i %i\n", seg_size[0], seg_size[1], seg_size[2]);
-	printf("                Segment offsets: 0 %i %i\n", loop_offset, read_int32(header + 43));
-#endif
-	instrument->samples = (int8 *) malloc(size + 1);
-	if (file.read(instrument->samples, size) < (unsigned int)size) {
-		warning("[sfx:seq:amiga] failed to read instrument samples");
-		free(instrument->samples);
-		delete instrument;
-		return NULL;
-	}
-
-	if (instrument->mode & kModeLoop) {
-		if (loop_offset + seg_size[1] > size) {
-#ifdef DEBUG
-			warning("[sfx:seq:amiga] looping samples extend %i bytes past end of sample block",
-			          loop_offset + seg_size[1] - size);
-#endif
-			seg_size[1] = size - loop_offset;
-		}
-
-		if (seg_size[1] < 0) {
-			warning("[sfx:seq:amiga] invalid looping point");
-			free(instrument->samples);
-			delete instrument;
-			return NULL;
-		}
-
-		instrument->size = seg_size[0];
-		instrument->loop_size = seg_size[1];
-
-		instrument->loop = (int8*)malloc(instrument->loop_size + 1);
-		memcpy(instrument->loop, instrument->samples + loop_offset, instrument->loop_size);
-
-		instrument->samples[instrument->size] = instrument->loop[0];
-		instrument->loop[instrument->loop_size] = instrument->loop[0];
-	} else {
-		instrument->loop = NULL;
-		instrument->size = size;
-		instrument->samples[instrument->size] = 0;
-	}
-
-	return instrument;
-}
-
-uint32 MidiDriver_Amiga::property(int prop, uint32 param) {
-	switch(prop) {
-	case MIDI_PROP_MASTER_VOLUME:
-		if (param != 0xffff)
-			_masterVolume = param;
-		return _masterVolume;
-	default:
-		break;
-	}
-	return 0;
-}
-
-int MidiDriver_Amiga::open() {
-	_frequency = _mixer->getOutputRate();
-	_envDecay.length = _frequency / (32 * 64);
-	_envDecay.delta = 1;
-	_envDecay.target = 0;
-
-	Common::File file;
-	byte header[40];
-
-	if (!file.open("bank.001")) {
-		warning("[sfx:seq:amiga] file bank.001 not found");
-		return Common::kUnknownError;
-	}
-
-	if (file.read(header, 40) < 40) {
-		warning("[sfx:seq:amiga] failed to read header of file bank.001");
-		return Common::kUnknownError;
-	}
-
-	for (uint i = 0; i < 256; i++)
-		_bank.instruments[i] = NULL;
-
-	for (uint i = 0; i < kChannels; i++) {
-		_voices[i].note = -1;
-		_voices[i].hw_channel = 0;
-	}
-
-	for (uint i = 0; i < MIDI_CHANNELS; i++) {
-		_channels[i].instrument = -1;
-		_channels[i].volume = 127;
-		_channels[i].pan = (i % 4 == 0 || i % 4 == 3 ? kPanLeft : kPanRight);
-	}
-
-	_bank.size = READ_BE_UINT16(header + 38);
-	strncpy(_bank.name, (char *) header + 8, 29);
-	_bank.name[29] = 0;
-#ifdef DEBUG
-	printf("[sfx:seq:amiga] Reading %i instruments from bank \"%s\"\n", _bank.size, _bank.name);
-#endif
-
-	for (uint i = 0; i < _bank.size; i++) {
-		int id;
-		Instrument *instrument = readInstrument(file, &id);
-
-		if (!instrument) {
-			warning("[sfx:seq:amiga] failed to read bank.001");
-			return Common::kUnknownError;
-		}
-
-		if (id < 0 || id > 255) {
-			warning("[sfx:seq:amiga] Error: instrument ID out of bounds");
-			return Common::kUnknownError;
-		}
-
-		_bank.instruments[id] = instrument;
-	}
-
-	MidiDriver_Emulated::open();
-
-	_mixer->playInputStream(Audio::Mixer::kMusicSoundType, &_mixerSoundHandle, this, -1, _mixer->kMaxChannelVolume, 0, false);
-
-	return Common::kNoError;
-}
-
-void MidiDriver_Amiga::close() {
-	_mixer->stopHandle(_mixerSoundHandle);
-
-	for (uint i = 0; i < _bank.size; i++) {
-		if (_bank.instruments[i]) {
-			if (_bank.instruments[i]->loop)
-				free(_bank.instruments[i]->loop);
-			free(_bank.instruments[i]->samples);
-			delete _bank.instruments[i];
-		}
-	}
-}
-
-void MidiDriver_Amiga::playSwitch(bool play) {
-	_playSwitch = play;
-}
-
-void MidiDriver_Amiga::setVolume(byte volume_) {
-	_masterVolume = volume_;
-}
-
-void MidiDriver_Amiga::send(uint32 b) {
-	byte command = b & 0xf0;
-	byte channel = b & 0xf;
-	byte op1 = (b >> 8) & 0xff;
-	byte op2 = (b >> 16) & 0xff;
-
-	switch (command) {
-	case 0x80:
-		stopNote(channel, op1);
-		break;
-	case 0x90:
-		if (op2 > 0)
-			startNote(channel, op1, op2);
-		else
-			stopNote(channel, op1);
-		break;
-	case 0xb0:
-		switch (op1) {
-		case 0x07:
-			_channels[channel].volume = op2;
-			break;
-		case 0x0a:
-#ifdef DEBUG
-			warning("[sfx:seq:amiga] ignoring pan 0x%02x event for channel %i", op2, channel);
-#endif
-			break;
-		case 0x7b:
-			stopChannel(channel);
-			break;
-		default:
-			warning("[sfx:seq:amiga] unknown control event 0x%02x", op1);
-		}
-		break;
-	case 0xc0:
-		changeInstrument(channel, op1);
-		break;
-	default:
-		warning("[sfx:seq:amiga] unknown event %02x", command);
-	}
-}
-
-void MidiDriver_Amiga::generateSamples(int16 *data, int len) {
-	if (len == 0)
-		return;
-
-	int16 *buffers = (int16*)malloc(len * 2 * kChannels);
-
-	memset(buffers, 0, len * 2 * kChannels);
-
-	/* Generate samples for all notes */
-	for (int i = 0; i < kChannels; i++)
-		if (_voices[i].note >= 0)
-			playInstrument(buffers + i * len, &_voices[i], len);
-
-	if (isStereo()) {
-		for (int j = 0; j < len; j++) {
-			int mixedl = 0, mixedr = 0;
-
-			/* Mix and pan */
-			for (int i = 0; i < kChannels; i++) {
-				mixedl += buffers[i * len + j] * (256 - _channels[_voices[i].hw_channel].pan);
-				mixedr += buffers[i * len + j] * _channels[_voices[i].hw_channel].pan;
-			}
-
-			/* Adjust volume */
-			data[2 * j] = mixedl * _masterVolume >> 13;
-			data[2 * j + 1] = mixedr * _masterVolume >> 13;
-		}
-	} else {
-		for (int j = 0; j < len; j++) {
-			int mixed = 0;
-
-			/* Mix */
-			for (int i = 0; i < kChannels; i++)
-				mixed += buffers[i * len + j];
-
-			/* Adjust volume */
-			data[j] = mixed * _masterVolume >> 6;
-		}
-	}
-
-	free(buffers);
-}
-
-class MidiPlayer_Amiga : public MidiPlayer {
-public:
-	MidiPlayer_Amiga() { _driver = new MidiDriver_Amiga(g_system->getMixer()); }
-	int getPlayMask(SciVersion soundVersion);
-	int getPolyphony() const { return MidiDriver_Amiga::kVoices; }
-	bool hasRhythmChannel() const { return false; }
-	void setVolume(byte volume) { static_cast<MidiDriver_Amiga *>(_driver)->setVolume(volume); }
-	void playSwitch(bool play) { static_cast<MidiDriver_Amiga *>(_driver)->playSwitch(play); }
-	void loadInstrument(int idx, byte *data);
-};
-
-MidiPlayer *MidiPlayer_Amiga_create() {
-	return new MidiPlayer_Amiga();
-}
-
-int MidiPlayer_Amiga::getPlayMask(SciVersion soundVersion) {
-	if (soundVersion == SCI_VERSION_0_EARLY)
-		error("No amiga support for sci0early");
-
-	return 0x40;
-}
-
-} // End of namespace Sci