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https://github.com/scummvm/scummvm.git
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sluicebox
3209bfb730
Tell MidiDriver_AmigaMac the game's platform instead of it attempting to infer this by which patch resources exist. Fixes bug #10925 where SQ3 German Amiga is treated as Mac because it happens to contain a patch 7 resource.
1041 lines
29 KiB
C++
1041 lines
29 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "audio/softsynth/emumidi.h"
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#include "sci/sound/drivers/mididriver.h"
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#include "sci/resource.h"
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#include "common/debug-channels.h"
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#include "common/file.h"
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#include "common/frac.h"
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#include "common/memstream.h"
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#include "common/system.h"
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#include "common/textconsole.h"
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#include "common/util.h"
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namespace Sci {
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// We use frac_t to store non-negative offsets that can be larger than 32767
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static uint fracToUInt(frac_t value) {
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return ((uint32)value) / (1 << FRAC_BITS);
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}
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class MidiDriver_AmigaMac : public MidiDriver_Emulated {
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public:
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enum {
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kVoices = 4
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};
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MidiDriver_AmigaMac(Audio::Mixer *mixer, Common::Platform platform) : MidiDriver_Emulated(mixer), _platform(platform), _playSwitch(true), _masterVolume(15) { }
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virtual ~MidiDriver_AmigaMac() { }
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// MidiDriver
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int open();
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void close();
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void send(uint32 b);
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MidiChannel *allocateChannel() { return NULL; }
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MidiChannel *getPercussionChannel() { return NULL; }
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// AudioStream
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bool isStereo() const { return true; }
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int getRate() const { return _mixer->getOutputRate(); }
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// MidiDriver_Emulated
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void generateSamples(int16 *buf, int len);
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void setVolume(byte volume);
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void playSwitch(bool play);
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virtual uint32 property(int prop, uint32 param);
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private:
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enum {
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kModeLoop = 1 << 0, // Instrument looping flag
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kModePitch = 1 << 1 // Instrument pitch changes flag
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};
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enum {
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kChannels = 10,
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kBaseFreq = 20000, // Samplerate of the instrument bank
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kPanLeft = 91,
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kPanRight = 164
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};
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struct Channel {
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int instrument;
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int volume;
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int pan;
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uint16 pitch;
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};
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struct Envelope {
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int length; // Phase period length in samples
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int delta; // Velocity delta per period
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int target; // Target velocity
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};
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struct Voice {
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int instrument;
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int note;
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int note_velocity;
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int velocity;
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int envelope;
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int envelope_samples; // Number of samples till next envelope event
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int decay;
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int looping;
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int hw_channel;
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frac_t offset;
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frac_t rate;
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};
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struct InstrumentSample {
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char name[30];
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int mode;
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int size; // Size of non-looping part in bytes
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int loop_size; // Starting offset and size of loop in bytes
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int transpose; // Transpose value in semitones
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Envelope envelope[4]; // Envelope
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int8 *samples;
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int8 *loop;
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int16 startNote;
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int16 endNote;
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bool isUnsigned;
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uint16 baseFreq;
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uint16 baseNote;
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int16 fixedNote;
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};
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class Instrument : public Common::Array<InstrumentSample *> {
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public:
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char name[30];
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};
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struct Bank {
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char name[30];
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uint size;
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Common::Array<Instrument> instruments;
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};
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Common::Platform _platform;
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bool _isSci1;
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bool _isSci1Early; // KQ1/MUMG/SQ3-German Amiga, patch 5
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bool _playSwitch;
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int _masterVolume;
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int _frequency;
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Envelope _envDecay;
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Bank _bank; // Instrument bank
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double _freqTable[48];
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Channel _channels[MIDI_CHANNELS];
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/* Internal channels */
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Voice _voices[kChannels];
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void setEnvelope(Voice *channel, Envelope *envelope, int phase);
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void setOutputFrac(int voice);
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int interpolate(int8 *samples, frac_t offset, uint32 maxOffset, bool isUnsigned);
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void playInstrument(int16 *dest, Voice *channel, int count);
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void changeInstrument(int channel, int instrument);
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void stopChannel(int ch);
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void stopNote(int ch, int note);
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void startNote(int ch, int note, int velocity);
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InstrumentSample *findInstrument(int instrument, int note);
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void pitchWheel(int ch, uint16 pitch);
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bool loadInstrumentsSCI0(Common::File &file);
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bool loadInstrumentsSCI0Mac(Common::SeekableReadStream &file);
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InstrumentSample *readInstrumentSCI0(Common::SeekableReadStream &file, int *id);
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bool loadInstrumentsSCI1(Common::SeekableReadStream &file);
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};
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void MidiDriver_AmigaMac::setEnvelope(Voice *channel, Envelope *envelope, int phase) {
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channel->envelope = phase;
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channel->envelope_samples = envelope[phase].length;
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if (phase == 0)
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channel->velocity = channel->note_velocity / 2;
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else
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channel->velocity = envelope[phase - 1].target;
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}
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int MidiDriver_AmigaMac::interpolate(int8 *samples, frac_t offset, uint32 maxOffset, bool isUnsigned) {
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uint x = fracToUInt(offset);
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uint x2 = x == maxOffset ? 0 : x + 1;
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if (isUnsigned) {
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int s1 = (byte)samples[x] - 0x80;
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int s2 = (byte)samples[x2] - 0x80;
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int diff = (s2 - s1) << 8;
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return (s1 << 8) + fracToInt(diff * (offset & FRAC_LO_MASK));
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}
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int diff = (samples[x2] - samples[x]) << 8;
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return (samples[x] << 8) + fracToInt(diff * (offset & FRAC_LO_MASK));
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}
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void MidiDriver_AmigaMac::playInstrument(int16 *dest, Voice *channel, int count) {
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int index = 0;
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int vol = _channels[channel->hw_channel].volume;
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InstrumentSample *instrument = findInstrument(channel->instrument, channel->note);
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while (1) {
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/* Available source samples until end of segment */
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frac_t lin_avail;
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uint32 seg_end, rem, i, amount;
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int8 *samples;
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if (channel->looping && instrument->loop) {
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samples = instrument->loop;
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seg_end = instrument->loop_size;
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} else {
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samples = instrument->samples;
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seg_end = instrument->size;
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}
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lin_avail = intToFrac(seg_end) - channel->offset;
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rem = count - index;
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/* Amount of destination samples that we will compute this iteration */
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amount = lin_avail / channel->rate;
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if (lin_avail % channel->rate)
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amount++;
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if (amount > rem)
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amount = rem;
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/* Stop at next envelope event */
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if ((channel->envelope_samples != -1) && (amount > (uint32)channel->envelope_samples))
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amount = channel->envelope_samples;
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for (i = 0; i < amount; i++) {
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dest[index++] = interpolate(samples, channel->offset, seg_end, instrument->isUnsigned) * channel->velocity / 64 * channel->note_velocity * vol / (127 * 127);
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channel->offset += channel->rate;
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}
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if (channel->envelope_samples != -1)
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channel->envelope_samples -= amount;
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if (channel->envelope_samples == 0) {
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Envelope *envelope;
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int delta, target, velocity;
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if (channel->decay)
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envelope = &_envDecay;
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else
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envelope = &instrument->envelope[channel->envelope];
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delta = envelope->delta;
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target = envelope->target;
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velocity = channel->velocity - envelope->delta;
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/* Check whether we have reached the velocity target for the current phase */
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if ((delta >= 0 && velocity <= target) || (delta < 0 && velocity >= target)) {
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channel->velocity = target;
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/* Stop note after velocity has dropped to 0 */
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if (target == 0) {
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channel->note = -1;
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break;
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} else
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switch (channel->envelope) {
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case 0:
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case 2:
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/* Go to next phase */
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setEnvelope(channel, instrument->envelope, channel->envelope + 1);
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break;
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case 1:
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case 3:
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/* Stop envelope */
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channel->envelope_samples = -1;
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break;
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}
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} else {
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/* We haven't reached the target yet */
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channel->envelope_samples = envelope->length;
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channel->velocity = velocity;
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}
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}
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if (index == count)
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break;
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if (fracToUInt(channel->offset) >= seg_end) {
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if (instrument->mode & kModeLoop) {
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/* Loop the samples */
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channel->offset -= intToFrac(seg_end);
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channel->looping = 1;
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} else {
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/* All samples have been played */
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channel->note = -1;
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break;
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}
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}
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}
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}
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void MidiDriver_AmigaMac::changeInstrument(int channel, int instrument) {
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if (((uint)instrument < _bank.instruments.size()) && (_bank.instruments[instrument].size() > 0))
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debugC(1, kDebugLevelSound, "Amiga/Mac driver: Setting channel %i to \"%s\" (%i)", channel, _bank.instruments[instrument].name, instrument);
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else
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debugC(kDebugLevelSound, "Amiga/Mac driver: instrument %i does not exist (channel %i)", instrument, channel);
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_channels[channel].instrument = instrument;
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}
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void MidiDriver_AmigaMac::stopChannel(int ch) {
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int i;
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/* Start decay phase for note on this hw channel, if any */
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for (i = 0; i < kChannels; i++)
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if (_voices[i].note != -1 && _voices[i].hw_channel == ch && !_voices[i].decay) {
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/* Trigger fast decay envelope */
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_voices[i].decay = 1;
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_voices[i].envelope_samples = _envDecay.length;
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break;
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}
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}
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void MidiDriver_AmigaMac::pitchWheel(int ch, uint16 pitch) {
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_channels[ch].pitch = pitch;
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for (int i = 0; i < kChannels; i++)
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if (_voices[i].note != -1 && _voices[i].hw_channel == ch)
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setOutputFrac(i);
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}
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void MidiDriver_AmigaMac::stopNote(int ch, int note) {
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int channel;
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for (channel = 0; channel < kChannels; channel++)
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if (_voices[channel].note == note && _voices[channel].hw_channel == ch && !_voices[channel].decay)
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break;
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if (channel == kChannels) {
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debugC(1, kDebugLevelSound, "Amiga/Mac driver: cannot stop note %i on channel %i", note, ch);
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return;
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}
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InstrumentSample *instrument = findInstrument(_voices[channel].instrument, note);
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// FIXME: SCI1 envelope support is not perfect yet
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/* Start the envelope phases for note-off if looping is on and envelope is enabled */
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if ((instrument->mode & kModeLoop) && (instrument->envelope[0].length != 0))
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setEnvelope(&_voices[channel], instrument->envelope, 2);
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}
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MidiDriver_AmigaMac::InstrumentSample *MidiDriver_AmigaMac::findInstrument(int instrument, int note) {
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if ((uint)instrument >= _bank.instruments.size())
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return 0;
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for (uint32 i = 0; i < _bank.instruments[instrument].size(); i++) {
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InstrumentSample *sample = _bank.instruments[instrument][i];
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if (note >= sample->startNote && note <= sample->endNote)
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return sample;
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}
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return 0;
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}
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void MidiDriver_AmigaMac::setOutputFrac(int voice) {
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InstrumentSample *instrument = findInstrument(_voices[voice].instrument, _voices[voice].note);
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int fnote = 0;
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if (instrument->fixedNote == -1) {
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fnote = _voices[voice].note;
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// Handle SCI0-style transposing here
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if (!_isSci1)
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fnote += instrument->transpose;
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if (fnote < 0 || fnote > 127) {
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warning("Amiga/Mac driver: illegal note %i", fnote);
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return;
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}
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} else
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fnote = instrument->fixedNote;
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// Compute rate for note
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int mulFact = 1, divFact = 1;
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fnote -= instrument->baseNote;
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fnote *= 4;
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// FIXME: check how SSCI maps this
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fnote += (_channels[_voices[voice].hw_channel].pitch - 0x2000) / 169;
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while (fnote < 0) {
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divFact *= 2;
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fnote += 12 * 4;
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}
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while (fnote >= 12 * 4) {
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mulFact *= 2;
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fnote -= 12 * 4;
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}
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double freq = _freqTable[fnote] * instrument->baseFreq * mulFact / divFact;
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// Handle SCI1-style transposing here
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if (instrument->transpose && _isSci1)
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freq = freq + ((_freqTable[4] - 1.0) * freq * (double)instrument->transpose / (double)16);
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_voices[voice].rate = doubleToFrac(freq / _frequency);
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}
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void MidiDriver_AmigaMac::startNote(int ch, int note, int velocity) {
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int channel;
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if (_channels[ch].instrument < 0 || _channels[ch].instrument > 255) {
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warning("Amiga/Mac driver: invalid instrument %i on channel %i", _channels[ch].instrument, ch);
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return;
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}
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InstrumentSample *instrument = findInstrument(_channels[ch].instrument, note);
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if (!instrument) {
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warning("Amiga/Mac driver: instrument %i does not exist", _channels[ch].instrument);
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return;
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}
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for (channel = 0; channel < kChannels; channel++)
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if (_voices[channel].note == -1)
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break;
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if (channel == kChannels) {
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warning("Amiga/Mac driver: could not find a free channel");
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return;
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}
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stopChannel(ch);
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_voices[channel].instrument = _channels[ch].instrument;
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_voices[channel].note = note;
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_voices[channel].note_velocity = velocity;
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if ((instrument->mode & kModeLoop) && (instrument->envelope[0].length != 0))
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setEnvelope(&_voices[channel], instrument->envelope, 0);
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else {
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_voices[channel].velocity = 64;
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_voices[channel].envelope_samples = -1;
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}
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_voices[channel].offset = 0;
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_voices[channel].hw_channel = ch;
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_voices[channel].decay = 0;
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_voices[channel].looping = 0;
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setOutputFrac(channel);
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}
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MidiDriver_AmigaMac::InstrumentSample *MidiDriver_AmigaMac::readInstrumentSCI0(Common::SeekableReadStream &file, int *id) {
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byte header[61];
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if (file.read(header, 61) < 61) {
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warning("Amiga/Mac driver: failed to read instrument header");
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return NULL;
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}
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int seg_size[3];
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seg_size[0] = (int16)READ_BE_UINT16(header + 35) * 2;
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seg_size[1] = (int16)READ_BE_UINT16(header + 41) * 2;
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seg_size[2] = (int16)READ_BE_UINT16(header + 47) * 2;
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InstrumentSample *instrument = new InstrumentSample;
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instrument->startNote = 0;
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instrument->endNote = 127;
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instrument->isUnsigned = false;
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instrument->baseFreq = kBaseFreq;
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instrument->baseNote = 101;
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instrument->fixedNote = 101;
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instrument->mode = header[33];
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instrument->transpose = (int8)header[34];
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for (int i = 0; i < 4; i++) {
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int length = (int8)header[49 + i];
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if (length == 0 && i > 0)
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length = 256;
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instrument->envelope[i].length = length * _frequency / 60;
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instrument->envelope[i].delta = (int8)header[53 + i];
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instrument->envelope[i].target = header[57 + i];
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}
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/* Final target must be 0 */
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instrument->envelope[3].target = 0;
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int loop_offset = READ_BE_UINT32(header + 37) & ~1;
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int size = seg_size[0] + seg_size[1] + seg_size[2];
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*id = READ_BE_UINT16(header);
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strncpy(instrument->name, (char *) header + 2, 29);
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instrument->name[29] = 0;
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if (DebugMan.isDebugChannelEnabled(kDebugLevelSound)) {
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debug("Amiga/Mac driver: Reading instrument %i: \"%s\" (%i bytes)",
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*id, instrument->name, size);
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debugN(" Mode: %02x (", header[33]);
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debugN("looping: %s, ", header[33] & kModeLoop ? "on" : "off");
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debug("pitch changes: %s)", header[33] & kModePitch ? "on" : "off");
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debug(" Transpose: %i", (int8)header[34]);
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for (uint i = 0; i < 3; i++)
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debug(" Segment %i: %i words @ offset %i", i, (int16)READ_BE_UINT16(header + 35 + 6 * i), (i == 0 ? 0 : (int32)READ_BE_UINT32(header + 31 + 6 * i)));
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for (uint i = 0; i < 4; i++)
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debug(" Envelope %i: period %i / delta %i / target %i", i, header[49 + i], (int8)header[53 + i], header[57 + i]);
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}
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|
|
instrument->samples = (int8 *) malloc(size + 1);
|
|
if (file.read(instrument->samples, size) < (uint32)size) {
|
|
warning("Amiga/Mac driver: failed to read instrument samples");
|
|
free(instrument->samples);
|
|
delete instrument;
|
|
return NULL;
|
|
}
|
|
|
|
if (instrument->mode & kModePitch)
|
|
instrument->fixedNote = -1;
|
|
|
|
if (instrument->mode & kModeLoop) {
|
|
if (loop_offset + seg_size[1] > size) {
|
|
debugC(kDebugLevelSound, "Amiga/Mac driver: looping samples extend %i bytes past end of sample block",
|
|
loop_offset + seg_size[1] - size);
|
|
seg_size[1] = size - loop_offset;
|
|
}
|
|
|
|
if (seg_size[1] < 0) {
|
|
warning("Amiga/Mac driver: 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->loop_size = 0;
|
|
instrument->size = size;
|
|
instrument->samples[instrument->size] = 0;
|
|
}
|
|
|
|
return instrument;
|
|
}
|
|
|
|
uint32 MidiDriver_AmigaMac::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_AmigaMac::open() {
|
|
_isSci1 = false;
|
|
_isSci1Early = false;
|
|
|
|
for (int i = 0; i < 48; i++)
|
|
_freqTable[i] = pow(2, i / (double)48);
|
|
|
|
_frequency = _mixer->getOutputRate();
|
|
_envDecay.length = _frequency / (32 * 64);
|
|
_envDecay.delta = 1;
|
|
_envDecay.target = 0;
|
|
|
|
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);
|
|
_channels[i].pitch = 0x2000;
|
|
}
|
|
|
|
Common::File file;
|
|
|
|
if (file.open("bank.001")) {
|
|
if (!loadInstrumentsSCI0(file)) {
|
|
file.close();
|
|
return Common::kUnknownError;
|
|
}
|
|
file.close();
|
|
} else {
|
|
ResourceManager *resMan = g_sci->getResMan();
|
|
|
|
Resource *resource = nullptr;
|
|
if (_platform == Common::kPlatformAmiga) {
|
|
resource = resMan->findResource(ResourceId(kResourceTypePatch, 9), false);
|
|
|
|
if (!resource) {
|
|
// KQ1/MUM/SQ3-German Amiga
|
|
resource = resMan->findResource(ResourceId(kResourceTypePatch, 5), false);
|
|
if (resource) {
|
|
_isSci1Early = true;
|
|
}
|
|
}
|
|
} else if (_platform == Common::kPlatformMacintosh) {
|
|
resource = resMan->findResource(ResourceId(kResourceTypePatch, 7), false);
|
|
}
|
|
|
|
// If we have a patch by this point, it's SCI1
|
|
if (resource)
|
|
_isSci1 = true;
|
|
|
|
// Check for the SCI0 Mac patch
|
|
if (_platform == Common::kPlatformMacintosh) {
|
|
if (!resource) {
|
|
resource = resMan->findResource(ResourceId(kResourceTypePatch, 200), false);
|
|
}
|
|
}
|
|
|
|
if (!resource) {
|
|
warning("Could not open patch for Amiga sound driver");
|
|
return Common::kUnknownError;
|
|
}
|
|
|
|
Common::MemoryReadStream stream(resource->toStream());
|
|
|
|
if (_isSci1) {
|
|
if (!loadInstrumentsSCI1(stream))
|
|
return Common::kUnknownError;
|
|
} else if (!loadInstrumentsSCI0Mac(stream))
|
|
return Common::kUnknownError;
|
|
}
|
|
|
|
MidiDriver_Emulated::open();
|
|
|
|
_mixer->playStream(Audio::Mixer::kPlainSoundType, &_mixerSoundHandle, this, -1, _mixer->kMaxChannelVolume, 0, DisposeAfterUse::NO);
|
|
|
|
return Common::kNoError;
|
|
}
|
|
|
|
void MidiDriver_AmigaMac::close() {
|
|
_mixer->stopHandle(_mixerSoundHandle);
|
|
|
|
for (uint i = 0; i < _bank.size; i++) {
|
|
for (uint32 j = 0; j < _bank.instruments[i].size(); j++) {
|
|
if (_bank.instruments[i][j]) {
|
|
if (_bank.instruments[i][j]->loop)
|
|
free(_bank.instruments[i][j]->loop);
|
|
free(_bank.instruments[i][j]->samples);
|
|
delete _bank.instruments[i][j];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void MidiDriver_AmigaMac::playSwitch(bool play) {
|
|
_playSwitch = play;
|
|
}
|
|
|
|
void MidiDriver_AmigaMac::setVolume(byte volume_) {
|
|
_masterVolume = volume_;
|
|
}
|
|
|
|
void MidiDriver_AmigaMac::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: // pan
|
|
// TODO
|
|
debugC(1, kDebugLevelSound, "Amiga/Mac driver: ignoring pan 0x%02x event for channel %i", op2, channel);
|
|
break;
|
|
case 0x40: // hold
|
|
// TODO
|
|
debugC(1, kDebugLevelSound, "Amiga/Mac driver: ignoring hold 0x%02x event for channel %i", op2, channel);
|
|
break;
|
|
case 0x4b: // voice mapping
|
|
break;
|
|
case 0x4e: // velocity
|
|
break;
|
|
case 0x7b:
|
|
stopChannel(channel);
|
|
break;
|
|
default:
|
|
//warning("Amiga/Mac driver: unknown control event 0x%02x", op1);
|
|
break;
|
|
}
|
|
break;
|
|
case 0xc0:
|
|
changeInstrument(channel, op1);
|
|
break;
|
|
// The original MIDI driver from sierra ignores aftertouch completely, so should we
|
|
case 0xa0: // Polyphonic key pressure (aftertouch)
|
|
case 0xd0: // Channel pressure (aftertouch)
|
|
break;
|
|
case 0xe0:
|
|
pitchWheel(channel, (op2 << 7) | op1);
|
|
break;
|
|
default:
|
|
warning("Amiga/Mac driver: unknown event %02x", command);
|
|
}
|
|
}
|
|
|
|
void MidiDriver_AmigaMac::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);
|
|
}
|
|
|
|
bool MidiDriver_AmigaMac::loadInstrumentsSCI0(Common::File &file) {
|
|
_isSci1 = false;
|
|
|
|
byte header[40];
|
|
|
|
if (file.read(header, 40) < 40) {
|
|
warning("Amiga/Mac driver: failed to read header of file bank.001");
|
|
return false;
|
|
}
|
|
|
|
_bank.size = READ_BE_UINT16(header + 38);
|
|
strncpy(_bank.name, (char *) header + 8, 29);
|
|
_bank.name[29] = 0;
|
|
debugC(kDebugLevelSound, "Amiga/Mac driver: Reading %i instruments from bank \"%s\"", _bank.size, _bank.name);
|
|
|
|
for (uint i = 0; i < _bank.size; i++) {
|
|
int id;
|
|
InstrumentSample *instrument = readInstrumentSCI0(file, &id);
|
|
|
|
if (!instrument) {
|
|
warning("Amiga/Mac driver: failed to read bank.001");
|
|
return false;
|
|
}
|
|
|
|
if (id < 0 || id > 255) {
|
|
warning("Amiga/Mac driver: Error: instrument ID out of bounds");
|
|
delete instrument;
|
|
return false;
|
|
}
|
|
|
|
if ((uint)id >= _bank.instruments.size())
|
|
_bank.instruments.resize(id + 1);
|
|
|
|
_bank.instruments[id].push_back(instrument);
|
|
memcpy(_bank.instruments[id].name, instrument->name, sizeof(instrument->name));
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool MidiDriver_AmigaMac::loadInstrumentsSCI0Mac(Common::SeekableReadStream &file) {
|
|
byte header[40];
|
|
|
|
if (file.read(header, 40) < 40) {
|
|
warning("Amiga/Mac driver: failed to read header of file patch.200");
|
|
return false;
|
|
}
|
|
|
|
_bank.size = 128;
|
|
strncpy(_bank.name, (char *) header + 8, 29);
|
|
_bank.name[29] = 0;
|
|
debugC(kDebugLevelSound, "Amiga/Mac driver: Reading %i instruments from bank \"%s\"", _bank.size, _bank.name);
|
|
|
|
Common::Array<uint32> instrumentOffsets;
|
|
instrumentOffsets.resize(_bank.size);
|
|
_bank.instruments.resize(_bank.size);
|
|
|
|
for (uint32 i = 0; i < _bank.size; i++)
|
|
instrumentOffsets[i] = file.readUint32BE();
|
|
|
|
for (uint i = 0; i < _bank.size; i++) {
|
|
// 0 signifies it doesn't exist
|
|
if (instrumentOffsets[i] == 0)
|
|
continue;
|
|
|
|
file.seek(instrumentOffsets[i]);
|
|
|
|
uint16 id = file.readUint16BE();
|
|
if (id != i)
|
|
error("Instrument number mismatch");
|
|
|
|
InstrumentSample *instrument = new InstrumentSample;
|
|
|
|
instrument->startNote = 0;
|
|
instrument->endNote = 127;
|
|
instrument->isUnsigned = true;
|
|
instrument->baseFreq = kBaseFreq;
|
|
instrument->baseNote = 101;
|
|
instrument->fixedNote = 101;
|
|
instrument->mode = file.readUint16BE();
|
|
|
|
// Read in the offsets
|
|
int32 seg_size[3];
|
|
seg_size[0] = file.readUint32BE();
|
|
seg_size[1] = file.readUint32BE();
|
|
seg_size[2] = file.readUint32BE();
|
|
|
|
instrument->transpose = file.readUint16BE();
|
|
|
|
for (byte j = 0; j < 4; j++) {
|
|
int length = (int8)file.readByte();
|
|
|
|
if (length == 0 && j > 0)
|
|
length = 256;
|
|
|
|
instrument->envelope[j].length = length * _frequency / 60;
|
|
instrument->envelope[j].delta = (int8)file.readByte();
|
|
instrument->envelope[j].target = file.readByte();
|
|
}
|
|
|
|
// Final target must be 0
|
|
instrument->envelope[3].target = 0;
|
|
|
|
file.read(instrument->name, 30);
|
|
|
|
if (instrument->mode & kModePitch)
|
|
instrument->fixedNote = -1;
|
|
|
|
uint32 size = seg_size[2];
|
|
uint32 loop_offset = seg_size[0];
|
|
|
|
instrument->samples = (int8 *)malloc(size + 1);
|
|
if (file.read(instrument->samples, size) < size) {
|
|
warning("Amiga/Mac driver: failed to read instrument sample");
|
|
free(instrument->samples);
|
|
delete instrument;
|
|
continue;
|
|
}
|
|
|
|
if (instrument->mode & kModeLoop) {
|
|
instrument->size = seg_size[0];
|
|
instrument->loop_size = seg_size[1] - seg_size[0];
|
|
|
|
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->loop_size = 0;
|
|
instrument->size = size;
|
|
instrument->samples[instrument->size] = (int8)0x80;
|
|
}
|
|
|
|
_bank.instruments[id].push_back(instrument);
|
|
memcpy(_bank.instruments[id].name, instrument->name, sizeof(instrument->name));
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool MidiDriver_AmigaMac::loadInstrumentsSCI1(Common::SeekableReadStream &file) {
|
|
_bank.size = 128;
|
|
|
|
if (_isSci1Early)
|
|
file.readUint32BE(); // Skip size of bank
|
|
|
|
Common::Array<uint32> instrumentOffsets;
|
|
instrumentOffsets.resize(_bank.size);
|
|
_bank.instruments.resize(_bank.size);
|
|
|
|
for (uint32 i = 0; i < _bank.size; i++)
|
|
instrumentOffsets[i] = file.readUint32BE();
|
|
|
|
for (uint32 i = 0; i < _bank.size; i++) {
|
|
// 0 signifies it doesn't exist
|
|
if (instrumentOffsets[i] == 0)
|
|
continue;
|
|
|
|
file.seek(instrumentOffsets[i] + (_isSci1Early ? 4 : 0));
|
|
|
|
// Read in the instrument name
|
|
file.read(_bank.instruments[i].name, 10); // last two bytes are always 0
|
|
|
|
for (uint32 j = 0; ; j++) {
|
|
InstrumentSample *sample = new InstrumentSample;
|
|
memset(sample, 0, sizeof(InstrumentSample));
|
|
|
|
sample->startNote = file.readSint16BE();
|
|
|
|
// startNote being -1 signifies we're done with this instrument
|
|
if (sample->startNote == -1) {
|
|
delete sample;
|
|
break;
|
|
}
|
|
|
|
sample->endNote = file.readSint16BE();
|
|
uint32 samplePtr = file.readUint32BE();
|
|
sample->transpose = file.readSint16BE();
|
|
for (int env = 0; env < 3; env++) {
|
|
sample->envelope[env].length = file.readByte() * _frequency / 60;
|
|
sample->envelope[env].delta = (env == 0 ? 10 : -10);
|
|
sample->envelope[env].target = file.readByte();
|
|
}
|
|
|
|
sample->envelope[3].length = 0;
|
|
sample->fixedNote = file.readSint16BE();
|
|
int16 loop = file.readSint16BE();
|
|
uint32 nextSamplePos = file.pos();
|
|
|
|
file.seek(samplePtr + (_isSci1Early ? 4 : 0));
|
|
file.read(sample->name, 8);
|
|
|
|
uint16 phase1Offset, phase1End;
|
|
uint16 phase2Offset, phase2End;
|
|
|
|
if (_isSci1Early) {
|
|
sample->isUnsigned = false;
|
|
file.readUint32BE(); // skip total sample size
|
|
phase2Offset = file.readUint16BE();
|
|
phase2End = file.readUint16BE();
|
|
sample->baseNote = file.readUint16BE();
|
|
phase1Offset = file.readUint16BE();
|
|
phase1End = file.readUint16BE();
|
|
} else {
|
|
sample->isUnsigned = file.readUint16BE() == 0;
|
|
phase1Offset = file.readUint16BE();
|
|
phase1End = file.readUint16BE();
|
|
phase2Offset = file.readUint16BE();
|
|
phase2End = file.readUint16BE();
|
|
sample->baseNote = file.readUint16BE();
|
|
}
|
|
|
|
uint32 periodTableOffset = _isSci1Early ? 0 : file.readUint32BE();
|
|
uint32 sampleDataPos = file.pos();
|
|
|
|
sample->size = phase1End - phase1Offset + 1;
|
|
sample->loop_size = phase2End - phase2Offset + 1;
|
|
|
|
sample->samples = (int8 *)malloc(sample->size + 1);
|
|
file.seek(phase1Offset + sampleDataPos);
|
|
file.read(sample->samples, sample->size);
|
|
sample->samples[sample->size] = (sample->isUnsigned ? (int8)0x80 : 0);
|
|
|
|
if (loop == 0 && sample->loop_size > 1) {
|
|
sample->loop = (int8 *)malloc(sample->loop_size + 1);
|
|
file.seek(phase2Offset + sampleDataPos);
|
|
file.read(sample->loop, sample->loop_size);
|
|
sample->mode |= kModeLoop;
|
|
sample->samples[sample->size] = sample->loop[0];
|
|
sample->loop[sample->loop_size] = sample->loop[0];
|
|
}
|
|
|
|
_bank.instruments[i].push_back(sample);
|
|
|
|
if (_isSci1Early) {
|
|
// There's no frequency specified by the sample and is hardcoded like in SCI0
|
|
sample->baseFreq = 11000;
|
|
} else {
|
|
file.seek(periodTableOffset + 0xe0);
|
|
sample->baseFreq = file.readUint16BE();
|
|
}
|
|
|
|
file.seek(nextSamplePos);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
class MidiPlayer_AmigaMac : public MidiPlayer {
|
|
public:
|
|
MidiPlayer_AmigaMac(SciVersion version, Common::Platform platform) : MidiPlayer(version) {
|
|
_driver = new MidiDriver_AmigaMac(g_system->getMixer(), platform);
|
|
}
|
|
byte getPlayId() const;
|
|
int getPolyphony() const { return MidiDriver_AmigaMac::kVoices; }
|
|
bool hasRhythmChannel() const { return false; }
|
|
void setVolume(byte volume) { static_cast<MidiDriver_AmigaMac *>(_driver)->setVolume(volume); }
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void playSwitch(bool play) { static_cast<MidiDriver_AmigaMac *>(_driver)->playSwitch(play); }
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void loadInstrument(int idx, byte *data);
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};
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MidiPlayer *MidiPlayer_AmigaMac_create(SciVersion version, Common::Platform platform) {
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return new MidiPlayer_AmigaMac(version, platform);
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}
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byte MidiPlayer_AmigaMac::getPlayId() const {
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if (_version > SCI_VERSION_0_LATE)
|
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return 0x06;
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|
|
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return 0x40;
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}
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} // End of namespace Sci
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