push2.h

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/*
 * Copyright (C) 2016-2018 Paul Davis <paul@linuxaudiosystems.com>
 *
 * 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.
 */
 
#ifndef __ardour_push2_h__
#define __ardour_push2_h__
 
#include <vector>
#include <map>
#include <stack>
#include <list>
#include <set>
 
#include <libusb.h>
 
#define ABSTRACT_UI_EXPORTS
#include "pbd/abstract_ui.h"
 
#include "midi++/types.h"
 
#include "ardour/mode.h"
#include "ardour/types.h"
 
#include "control_protocol/control_protocol.h"
#include "control_protocol/types.h"
 
#include "gtkmm2ext/colors.h"
 
#include "midi_surface/midi_byte_array.h"
#include "midi_surface/midi_surface.h"
 
namespace MIDI {
        class Parser;
        class Port;
}
 
namespace ARDOUR {
        class Port;
        class MidiBuffer;
        class MidiTrack;
}
 
namespace ArdourSurface {
 
class P2GUI;
class Push2Layout;
class Push2Canvas;
 
class Push2 : public MIDISurface
{
  public:
        enum ButtonID {
                TapTempo,
                Metronome,
                Upper1, Upper2, Upper3, Upper4, Upper5, Upper6, Upper7, Upper8,
                Setup,
                User,
                Delete,
                AddDevice,
                Device,
                Mix,
                Undo,
                AddTrack,
                Browse,
                Clip,
                Mute,
                Solo,
                Stop,
                Lower1, Lower2, Lower3, Lower4, Lower5, Lower6, Lower7, Lower8,
                Master,
                Convert,
                DoubleLoop,
                Quantize,
                Duplicate,
                New,
                FixedLength,
                Automate,
                RecordEnable,
                Play,
                Fwd32ndT,
                Fwd32nd,
                Fwd16thT,
                Fwd16th,
                Fwd8thT,
                Fwd8th,
                Fwd4trT,
                Fwd4tr,
                Up,
                Right,
                Down,
                Left,
                Repeat,
                Accent,
                Scale,
                Layout,
                Note,
                Session,
                OctaveUp,
                PageRight,
                OctaveDown,
                PageLeft,
                Shift,
                Select
        };
 
        struct LED
        {
                enum State {
                        NoTransition,
                        OneShot24th,
                        OneShot16th,
                        OneShot8th,
                        OneShot4th,
                        OneShot2th,
                        Pulsing24th,
                        Pulsing16th,
                        Pulsing8th,
                        Pulsing4th,
                        Pulsing2th,
                        Blinking24th,
                        Blinking16th,
                        Blinking8th,
                        Blinking4th,
                        Blinking2th
                };
 
                enum Colors {
                        Black = 0,
                        Red = 127,
                        Green = 126,
                        Blue = 125,
                        DarkGray = 124,
                        LightGray = 123,
                        White = 122
                };
 
                LED (uint8_t e) : _extra (e), _color_index (Black), _state (NoTransition) {}
                virtual ~LED() {}
 
                uint8_t extra () const { return _extra; }
                uint8_t color_index () const { return _color_index; }
                State   state () const { return _state; }
 
                void set_color (uint8_t color_index);
                void set_state (State state);
 
                virtual MidiByteArray state_msg() const = 0;
 
        protected:
                uint8_t _extra;
                uint8_t _color_index;
                State   _state;
        };
 
        struct Pad : public LED {
                enum WhenPressed {
                        Nothing,
                        FlashOn,
                        FlashOff,
                };
 
                Pad (int xx, int yy, uint8_t ex)
                        : LED (ex)
                        , x (xx)
                        , y (yy)
                        , do_when_pressed (FlashOn)
                        , filtered (ex)
                        , perma_color (LED::Black)
                {}
 
                MidiByteArray state_msg () const { return MidiByteArray (3, 0x90|_state, _extra, _color_index); }
 
                int coord () const { return (y * 8) + x; }
                int note_number() const { return extra(); }
 
                int x;
                int y;
                int do_when_pressed;
                int filtered;
                int perma_color;
        };
 
        struct Button : public LED {
                Button (ButtonID bb, uint8_t ex)
                        : LED (ex)
                        , id (bb)
                        , press_method (&Push2::relax)
                        , release_method (&Push2::relax)
                        , long_press_method (&Push2::relax)
                {}
 
                Button (ButtonID bb, uint8_t ex, void (Push2::*press)())
                        : LED (ex)
                        , id (bb)
                        , press_method (press)
                        , release_method (&Push2::relax)
                        , long_press_method (&Push2::relax)
                {}
 
                Button (ButtonID bb, uint8_t ex, void (Push2::*press)(), void (Push2::*release)())
                        : LED (ex)
                        , id (bb)
                        , press_method (press)
                        , release_method (release)
                        , long_press_method (&Push2::relax)
                {}
 
                Button (ButtonID bb, uint8_t ex, void (Push2::*press)(), void (Push2::*release)(), void (Push2::*long_press)())
                        : LED (ex)
                        , id (bb)
                        , press_method (press)
                        , release_method (release)
                        , long_press_method (long_press)
                {}
 
                MidiByteArray state_msg () const { return MidiByteArray (3, 0xb0|_state, _extra, _color_index); }
                int controller_number() const { return extra(); }
 
                ButtonID id;
                void (Push2::*press_method)();
                void (Push2::*release_method)();
                void (Push2::*long_press_method)();
                sigc::connection timeout_connection;
        };
 
        struct ColorButton : public Button {
                ColorButton (ButtonID bb, uint8_t ex)
                        : Button (bb, ex) {}
 
 
                ColorButton (ButtonID bb, uint8_t ex, void (Push2::*press)())
                        : Button (bb, ex, press) {}
 
                ColorButton (ButtonID bb, uint8_t ex, void (Push2::*press)(), void (Push2::*release)())
                        : Button (bb, ex, press, release) {}
 
                ColorButton (ButtonID bb, uint8_t ex, void (Push2::*press)(), void (Push2::*release)(), void (Push2::*long_press)())
                        : Button (bb, ex, press, release, long_press) {}
        };
 
        struct WhiteButton : public Button {
                WhiteButton (ButtonID bb, uint8_t ex)
                        : Button (bb, ex) {}
 
                WhiteButton (ButtonID bb, uint8_t ex, void (Push2::*press)())
                        : Button (bb, ex, press) {}
 
                WhiteButton (ButtonID bb, uint8_t ex, void (Push2::*press)(), void (Push2::*release)())
                        : Button (bb, ex, press, release) {}
 
                WhiteButton (ButtonID bb, uint8_t ex, void (Push2::*press)(), void (Push2::*release)(), void (Push2::*long_press)())
                        : Button (bb, ex, press, release, long_press) {}
        };
 
        enum ColorName {
                DarkBackground,
                LightBackground,
 
                ParameterName,
                StripableName,
                ClockText,
 
                KnobArcBackground,
                KnobArcStart,
                KnobArcEnd,
 
                KnobLine,
                KnobLineShadow,
 
                KnobForeground,
                KnobBackground,
                KnobShadow,
                KnobBorder,
        };
 
        enum PressureMode {
                AfterTouch,
                PolyPressure,
        };
 
  public:
        Push2 (ARDOUR::Session&);
        ~Push2 ();
 
        static bool available ();
        static bool match_usb (uint16_t, uint16_t);
        static bool probe (std::string&, std::string&);
 
        std::string input_port_name () const;
        std::string output_port_name () const;
 
        bool has_editor () const { return true; }
        void* get_gui () const;
        void  tear_down_gui ();
 
        int set_active (bool yn);
        XMLNode& get_state() const;
        int set_state (const XMLNode & node, int version);
 
        int pad_note (int row, int col) const;
        PBD::Signal<void()> PadChange;
 
        void update_selection_color ();
 
        enum NoteGridOrigin {
                Fixed,  
                Rooted, 
        };
 
        enum RowInterval {
                Third,      
                Fourth,     
                Fifth,      
                Sequential, 
        };
 
        enum PadNoteKind { RootNote, InScaleNote, OutOfScaleNote };
 
        void set_pad_note_kind(Pad& pad, PadNoteKind kind);
 
        void set_pad_scale_in_key (int               root,
                                   int               octave,
                                   MusicalMode::Type mode,
                                   NoteGridOrigin    origin,
                                   int               ideal_vertical_semitones);
 
        void set_pad_scale_chromatic (int               root,
                                      int               octave,
                                      MusicalMode::Type mode,
                                      NoteGridOrigin    origin,
                                      int               vertical_semitones);
 
        void set_pad_scale (int               root,
                            int               octave,
                            MusicalMode::Type mode,
                            NoteGridOrigin    origin,
                            RowInterval       row_interval,
                            bool              inkey);
 
        PBD::Signal<void()> ScaleChange;
 
        MusicalMode::Type mode() const { return  _mode; }
        NoteGridOrigin note_grid_origin() { return _note_grid_origin; }
        RowInterval row_interval() const { return _row_interval; }
        int scale_root() const { return _scale_root; }
        int root_octave() const { return _root_octave; }
        bool in_key() const { return _in_key; }
 
        Push2Layout* current_layout() const;
        void         use_previous_layout ();
 
        Push2Canvas* canvas() const { return _canvas; }
 
        enum ModifierState {
                None = 0,
                ModShift = 0x1,
                ModSelect = 0x2,
        };
 
        ModifierState modifier_state() const { return _modifier_state; }
 
        std::shared_ptr<Button> button_by_id (ButtonID);
        static std::string button_name_by_id (ButtonID);
 
        void strip_buttons_off ();
 
        uint8_t get_color_index (Gtkmm2ext::Color rgba);
        Gtkmm2ext::Color get_color (ColorName);
 
        PressureMode pressure_mode () const { return _pressure_mode; }
        void set_pressure_mode (PressureMode);
        PBD::Signal<void(PressureMode)> PressureModeChange;
 
        libusb_device_handle* usb_handle() const { return _handle; }
 
        bool stop_down () const { return _stop_down; }
 
        typedef std::map<int,std::shared_ptr<Pad> > PadMap;
        PadMap const & nn_pad_map() const { return _nn_pad_map; }
 
        std::shared_ptr<Pad> pad_by_xy (int x, int y);
        std::shared_ptr<Button> lower_button_by_column (uint32_t col);
 
  private:
        libusb_device_handle* _handle;
        ModifierState         _modifier_state;
 
        int begin_using_device ();
        int stop_using_device ();
        int device_acquire ();
        void device_release ();
        void run_event_loop ();
        void stop_event_loop ();
 
        void relax () {}
 
        /* map of Buttons by CC */
        typedef std::map<int,std::shared_ptr<Button> > CCButtonMap;
        CCButtonMap _cc_button_map;
        /* map of Buttons by ButtonID */
        typedef std::map<ButtonID,std::shared_ptr<Button> > IDButtonMap;
        IDButtonMap _id_button_map;
        std::set<ButtonID> _buttons_down;
        std::set<ButtonID> _consumed;
 
        bool button_long_press_timeout (ButtonID id);
        void start_press_timeout (std::shared_ptr<Button>, ButtonID);
 
        void init_buttons (bool startup);
        void init_touch_strip (bool with_shift);
 
        /* map of Pads by note number (the "fixed" note number sent by the
         * hardware, not the note number generated if the pad is touched)
         */
        PadMap _nn_pad_map;
 
        /* array of Pads by x,y duple (indexed as (x*8) + y */
 
        std::vector<std::shared_ptr<Pad> > _xy_pad_map;
 
        /* map of Pads by note number they generate (their "filtered" value)
         */
        typedef std::multimap<int,std::shared_ptr<Pad> > FNPadMap;
        FNPadMap _fn_pad_map;
 
        void set_button_color (ButtonID, uint8_t color_index);
        void set_button_state (ButtonID, LED::State);
        void set_led_color (ButtonID, uint8_t color_index);
        void set_led_state (ButtonID, LED::State);
 
        void build_maps ();
 
        void handle_midi_pitchbend_message (MIDI::Parser&, MIDI::pitchbend_t);
        void handle_midi_controller_message (MIDI::Parser&, MIDI::EventTwoBytes*);
        void handle_midi_note_on_message (MIDI::Parser&, MIDI::EventTwoBytes*);
        void handle_midi_note_off_message (MIDI::Parser&, MIDI::EventTwoBytes*);
        void handle_midi_sysex (MIDI::Parser&, MIDI::byte *, size_t count);
 
        void notify_record_state_changed ();
        void notify_transport_state_changed ();
        void notify_loop_state_changed ();
        void notify_parameter_changed (std::string);
        void notify_solo_active_changed (bool);
 
        /* Button methods */
        void button_play ();
        void button_recenable ();
        void button_up ();
        void button_down ();
        void button_right ();
        void button_left ();
        void button_metronome ();
        void button_repeat ();
        void button_mute ();
        void button_solo ();
        void button_solo_long_press ();
        void button_fixed_length ();
        void button_new ();
        void button_browse ();
        void button_clip ();
        void button_session ();
        void button_undo ();
        void button_fwd32t ();
        void button_fwd32 ();
        void button_fwd16t ();
        void button_fwd16 ();
        void button_fwd8t ();
        void button_fwd8 ();
        void button_fwd4t ();
        void button_fwd4 ();
        void button_add_track ();
        void button_stop_press();
        void button_stop_release ();
        void button_stop_long_press ();
        void button_master ();
        void button_quantize ();
        void button_duplicate ();
        void button_shift_press ();
        void button_shift_release ();
        void button_shift_long_press ();
        void button_select_press ();
        void button_select_release ();
        void button_select_long_press ();
        void button_page_left ();
        void button_page_right ();
        void button_octave_up ();
        void button_octave_down ();
        void button_layout_press ();
        void button_scale_press ();
        void button_mix_press ();
 
        void button_upper (uint32_t n);
        void button_lower (uint32_t n);
 
        void button_upper_1 () { button_upper (0); }
        void button_upper_2 () { button_upper (1); }
        void button_upper_3 () { button_upper (2); }
        void button_upper_4 () { button_upper (3); }
        void button_upper_5 () { button_upper (4); }
        void button_upper_6 () { button_upper (5); }
        void button_upper_7 () { button_upper (6); }
        void button_upper_8 () { button_upper (7); }
        void button_lower_1 () { button_lower (0); }
        void button_lower_2 () { button_lower (1); }
        void button_lower_3 () { button_lower (2); }
        void button_lower_4 () { button_lower (3); }
        void button_lower_5 () { button_lower (4); }
        void button_lower_6 () { button_lower (5); }
        void button_lower_7 () { button_lower (6); }
        void button_lower_8 () { button_lower (7); }
 
        void start_shift ();
        void end_shift ();
 
        /* non-strip encoders */
 
        void other_vpot (int, int);
        void other_vpot_touch (int, bool);
 
        /* special Stripable */
 
        std::shared_ptr<ARDOUR::Stripable> _master;
 
        sigc::connection _vblank_connection;
        bool vblank ();
 
        void splash ();
        PBD::microseconds_t _splash_start;
 
        /* the canvas */
 
        Push2Canvas* _canvas;
 
        /* Layouts */
 
        mutable Glib::Threads::Mutex layout_lock;
        Push2Layout* _current_layout;
        Push2Layout* _previous_layout;
        Push2Layout* _mix_layout;
        Push2Layout* _scale_layout;
        Push2Layout* _track_mix_layout;
        Push2Layout* _splash_layout;
        Push2Layout* _cue_layout;
        void set_current_layout (Push2Layout*);
 
        bool pad_filter (ARDOUR::MidiBuffer& in, ARDOUR::MidiBuffer& out) const;
 
        std::weak_ptr<ARDOUR::MidiTrack> _current_pad_target;
 
        /* GUI */
 
        mutable P2GUI* _gui;
        void build_gui ();
 
        /* pad mapping */
 
        void stripable_selection_changed ();
 
        MusicalMode::Type _mode;
        NoteGridOrigin    _note_grid_origin;
        RowInterval       _row_interval;
        int               _scale_root;
        int               _root_octave;
        bool              _in_key;
        int               _octave_shift;
        bool              _percussion;
 
        void restore_pad_scale ();
 
        void set_percussive_mode (bool);
 
        /* color map (device side) */
 
        typedef std::map<Gtkmm2ext::Color,uint8_t> ColorMap;
        typedef std::stack<uint8_t> ColorMapFreeList;
        ColorMap _color_map;
        ColorMapFreeList _color_map_free_list;
        void build_color_map ();
 
        /* our own colors */
 
        typedef std::map<ColorName,Gtkmm2ext::Color> Colors;
        Colors _colors;
        void fill_color_table ();
        void reset_pad_colors ();
 
        PressureMode _pressure_mode;
        void request_pressure_mode ();
 
        uint8_t _selection_color;
        uint8_t _contrast_color;
 
        bool _in_range_select;
        bool _stop_down;
};
 
} /* namespace */
 
#endif /* __ardour_push2_h__ */