/* ScummVM - Scumm Interpreter * Copyright (C) 2001 Ludvig Strigeus * Copyright (C) 2001-2005 The ScummVM project * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * $Header$ */ #ifndef DEFINED_IMUSE_INTERNAL #define DEFINED_IMUSE_INTERNAL #include "common/scummsys.h" #include "scumm/instrument.h" #include "sound/mididrv.h" class MidiParser; class OSystem; namespace Scumm { // Unremark this statement to activate some of // the most common iMuse diagnostic messages. // #define IMUSE_DEBUG struct ParameterFader; struct DeferredCommand; struct ImTrigger; struct SustainingNotes; struct CommandQueue; struct IsNoteCmdData; class Player; struct Part; class IMuseInternal; // Some entities also referenced class ScummEngine; ////////////////////////////////////////////////// // // Some constants // ////////////////////////////////////////////////// #define TICKS_PER_BEAT 480 #define TRIGGER_ID 0 #define COMMAND_ID 1 #define MDPG_TAG "MDpg" //////////////////////////////////////// // // Helper functions // //////////////////////////////////////// inline int clamp(int val, int min, int max) { if(val < min) return min; if(val > max) return max; return val; } inline int transpose_clamp(int a, int b, int c) { if(b > a) a += (b - a + 11) / 12 * 12; if(c < a) a -= (a - c + 11) / 12 * 12; return a; } ////////////////////////////////////////////////// // // Entity declarations // ////////////////////////////////////////////////// struct HookDatas { byte _jump[2]; byte _transpose; byte _part_onoff[16]; byte _part_volume[16]; byte _part_program[16]; byte _part_transpose[16]; int query_param(int param, byte chan); int set(byte cls, byte value, byte chan); HookDatas() { memset(this, 0, sizeof(HookDatas)); } }; struct ParameterFader { enum { pfVolume = 1, pfTranspose = 3, pfSpeed = 4 }; int param; int start; int end; uint32 total_time; uint32 current_time; ParameterFader() { param = 0; } void init() { param = 0; } }; struct DeferredCommand { uint32 time_left; int a, b, c, d, e, f; DeferredCommand() { memset(this, 0, sizeof(DeferredCommand)); } }; struct ImTrigger { int sound; byte id; uint16 expire; int command [8]; ImTrigger() { memset(this, 0, sizeof(ImTrigger)); } }; struct CommandQueue { uint16 array[8]; CommandQueue() { memset(this, 0, sizeof(CommandQueue)); } }; class Player : public MidiDriver { protected: // Moved from IMuseInternal. // This is only used by one player at a time. static uint16 _active_notes[128]; protected: MidiDriver *_midi; MidiParser *_parser; bool _passThrough; // Only respond to EOT, all else direct to MidiDriver Part *_parts; bool _active; bool _scanning; int _id; byte _priority; byte _volume; int8 _pan; int8 _transpose; int8 _detune; byte _vol_eff; uint _track_index; uint _loop_to_beat; uint _loop_from_beat; uint _loop_counter; uint _loop_to_tick; uint _loop_from_tick; byte _speed; bool _abort; // This does not get used by us! It is only // here for save/load purposes, and gets // passed on to the MidiParser during // fixAfterLoad(). uint32 _music_tick; HookDatas _hook; ParameterFader _parameterFaders[4]; bool _isMT32; bool _isGM; protected: // Player part void hook_clear(); void uninit_parts(); byte *parse_midi(byte *s); void part_set_transpose(uint8 chan, byte relative, int8 b); void parse_sysex(byte *p, uint len); void maybe_jump(byte cmd, uint track, uint beat, uint tick); void maybe_set_transpose(byte *data); void maybe_part_onoff(byte *data); void maybe_set_volume(byte *data); void maybe_set_program(byte *data); void maybe_set_transpose_part(byte *data); void turn_off_pedals(); int query_part_param(int param, byte chan); void turn_off_parts(); void play_active_notes(); void transitionParameters(); static void decode_sysex_bytes(const byte *src, byte *dst, int len); // Sequencer part int start_seq_sound(int sound, bool reset_vars = true); int query_param(int param); public: IMuseInternal *_se; uint _vol_chan; public: Player(); virtual ~Player(); int addParameterFader(int param, int target, int time); void clear(); void clearLoop(); void fixAfterLoad(); Part * getActivePart(uint8 part); uint getBeatIndex(); int8 getDetune() const { return _detune; } byte getEffectiveVolume() const { return _vol_eff; } int getID() const { return _id; } MidiDriver *getMidiDriver() const { return _midi; } int getParam(int param, byte chan); int8 getPan() const { return _pan; } Part * getPart(uint8 part); byte getPriority() const { return _priority; } uint getTicksPerBeat() const { return TICKS_PER_BEAT; } int8 getTranspose() const { return _transpose; } byte getVolume() const { return _volume; } bool isActive() const { return _active; } bool isFadingOut() const; bool isGM() const { return _isGM; } bool isMT32() const { return _isMT32; } bool jump(uint track, uint beat, uint tick); void onTimer(); void removePart(Part *part); int scan(uint totrack, uint tobeat, uint totick); int save_or_load(Serializer *ser); int setHook(byte cls, byte value, byte chan) { return _hook.set(cls, value, chan); } void setDetune(int detune); bool setLoop(uint count, uint tobeat, uint totick, uint frombeat, uint fromtick); void setPan(int pan); void setPriority(int pri); void setSpeed(byte speed); int setTranspose(byte relative, int b); int setVolume(byte vol); bool startSound(int sound, MidiDriver *midi, bool passThrough); int getMusicTimer() const; public: // MidiDriver interface int open() { return 0; } void close() { } void send(uint32 b); const char *getErrorName(int error_code) { return "Unknown"; } void sysEx(byte *msg, uint16 length); void metaEvent(byte type, byte *data, uint16 length); void setTimerCallback(void *timer_param, void(*timer_proc)(void *)) { } uint32 getBaseTempo(); MidiChannel *allocateChannel() { return 0; } MidiChannel *getPercussionChannel() { return 0; } }; struct Part { int _slot; Part *_next, *_prev; MidiChannel *_mc; Player *_player; int16 _pitchbend; byte _pitchbend_factor; int8 _transpose, _transpose_eff; byte _vol, _vol_eff; int8 _detune, _detune_eff; int8 _pan, _pan_eff; bool _on; byte _modwheel; bool _pedal; int8 _pri; byte _pri_eff; byte _chan; byte _effect_level; byte _chorus; byte _percussion; byte _bank; // New abstract instrument definition Instrument _instrument; bool _unassigned_instrument; // For diagnostic reporting purposes only // MidiChannel interface // (We don't currently derive from MidiChannel, // but if we ever do, this will make it easy.) void noteOff(byte note); void noteOn(byte note, byte velocity); void programChange(byte value); void pitchBend(int16 value); void modulationWheel(byte value); void volume(byte value); void pitchBendFactor(byte value); void sustain(bool value); void effectLevel(byte value); void chorusLevel(byte value); void allNotesOff(); void set_param(byte param, int value) { } void init(); void setup(Player *player); void uninit(); void off(); void set_instrument(uint b); void set_instrument(byte *data); void load_global_instrument(byte b); void set_transpose(int8 transpose); void set_detune(int8 detune); void set_pri(int8 pri); void set_pan(int8 pan); void set_onoff(bool on); void fix_after_load(); void sendAll(); void sendPitchBend(); bool clearToTransmit(); Part() { memset(this,0,sizeof(Part)); } }; // WARNING: This is the internal variant of the IMUSE class. // imuse.h contains a public version of the same class. // the public version, only contains a set of methods. class IMuseInternal { friend class Player; protected: bool _native_mt32; MidiDriver *_midi_adlib; MidiDriver *_midi_native; byte **_base_sounds; protected: bool _paused; bool _initialized; int _tempoFactor; int _player_limit; // Limits how many simultaneous music tracks are played bool _recycle_players; // Can we stop a player in order to start another one? bool _direct_passthrough; // Pass data direct to MidiDriver (no interactivity) uint _queue_end, _queue_pos, _queue_sound; byte _queue_adding; byte _queue_marker; byte _queue_cleared; byte _master_volume; // Master volume. 0-255 byte _music_volume; // Global music volume. 0-255 uint16 _trigger_count; ImTrigger _snm_triggers[16]; // Sam & Max triggers uint16 _snm_trigger_index; uint16 _channel_volume[8]; uint16 _channel_volume_eff[8]; // No Save uint16 _volchan_table[8]; Player _players[8]; Part _parts[32]; Instrument _global_adlib_instruments[32]; CommandQueue _cmd_queue[64]; DeferredCommand _deferredCommands[4]; protected: byte *findStartOfSound(int sound); bool isMT32(int sound); bool isGM(int sound); int get_queue_sound_status(int sound) const; void handle_marker(uint id, byte data); int get_channel_volume(uint a); void initMidiDriver(MidiDriver *midi); void initMT32(MidiDriver *midi); void init_players(); void init_parts(); void init_queue(); void sequencer_timers(MidiDriver *midi); MidiDriver *getBestMidiDriver(int sound); Player *allocate_player(byte priority); Part *allocate_part(byte pri, MidiDriver *midi); int32 ImSetTrigger(int sound, int id, int a, int b, int c, int d, int e, int f, int g, int h); int32 ImClearTrigger(int sound, int id); int32 ImFireAllTriggers(int sound); void addDeferredCommand(int time, int a, int b, int c, int d, int e, int f); void handleDeferredCommands(MidiDriver *midi); int enqueue_command(int a, int b, int c, int d, int e, int f, int g); int enqueue_trigger(int sound, int marker); int query_queue(int param); Player *findActivePlayer(int id); int get_volchan_entry(uint a); int set_volchan_entry(uint a, uint b); int set_channel_volume(uint chan, uint vol); void update_volumes(); void reset_tick(); int set_volchan(int sound, int volchan); void fix_parts_after_load(); void fix_players_after_load(ScummEngine *scumm); static int saveReference(void *me_ref, byte type, void *ref); static void *loadReference(void *me_ref, byte type, int ref); static void midiTimerCallback(void *data); public: IMuseInternal(); int initialize(OSystem *syst, MidiDriver *nativeMidiDriver, MidiDriver *adlibMidiDriver); void reallocateMidiChannels(MidiDriver *midi); void setGlobalAdlibInstrument(byte slot, byte *data); void copyGlobalAdlibInstrument(byte slot, Instrument *dest); bool isNativeMT32() { return _native_mt32; } // IMuse interface void on_timer(MidiDriver *midi); void pause(bool paused); int terminate1(); int terminate2(); int save_or_load(Serializer *ser, ScummEngine *scumm); int setMusicVolume(uint vol); int setImuseMasterVolume(uint vol); bool startSound(int sound); int stopSound(int sound); int stopAllSounds(); int getSoundStatus(int sound, bool ignoreFadeouts = true) const; int getMusicTimer() const; int32 doCommand (int a, int b, int c, int d, int e, int f, int g, int h); int32 doCommand (int numargs, int args[]); int clear_queue(); void setBase(byte **base); uint32 property(int prop, uint32 value); static IMuseInternal *create(OSystem *syst, MidiDriver *nativeMidiDriver, MidiDriver *adlibMidiDriver); }; } // End of namespace Scumm #endif