103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
|
#ifndef mackie_jog_wheel
|
||
|
|
#define mackie_jog_wheel
|
||
|
|
|
||
|
|
#include "timer.h"
|
||
|
|
|
||
|
|
#include <stack>
|
||
|
|
#include <deque>
|
||
|
|
#include <queue>
|
||
|
|
|
||
|
|
class MackieControlProtocol;
|
||
|
|
|
||
|
|
namespace Mackie
|
||
|
|
{
|
||
|
|
|
||
|
|
class SurfacePort;
|
||
|
|
class Control;
|
||
|
|
class ControlState;
|
||
|
|
|
||
|
|
/**
|
||
|
|
A jog wheel can be used to control many things. This
|
||
|
|
handles all of the states and state transitions.
|
||
|
|
|
||
|
|
Mainly it exists to avoid putting a bunch of messy
|
||
|
|
stuff in MackieControlProtocol.
|
||
|
|
|
||
|
|
But it doesn't really know who it is, with stacks, queues and various
|
||
|
|
boolean state variables.
|
||
|
|
*/
|
||
|
|
class JogWheel
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
enum State { scroll, zoom, speed, scrub, shuttle, select };
|
||
|
|
|
||
|
|
JogWheel( MackieControlProtocol & mcp );
|
||
|
|
|
||
|
|
/// As the wheel turns...
|
||
|
|
void jog_event( SurfacePort & port, Control & control, const ControlState & state );
|
||
|
|
|
||
|
|
// These are for incoming button presses that change the internal state
|
||
|
|
// but they're not actually used at the moment.
|
||
|
|
void zoom_event( SurfacePort & port, Control & control, const ControlState & state );
|
||
|
|
void scrub_event( SurfacePort & port, Control & control, const ControlState & state );
|
||
|
|
void speed_event( SurfacePort & port, Control & control, const ControlState & state );
|
||
|
|
void scroll_event( SurfacePort & port, Control & control, const ControlState & state );
|
||
|
|
|
||
|
|
/// Return the current jog wheel mode, which defaults to Scroll
|
||
|
|
State jog_wheel_state() const;
|
||
|
|
|
||
|
|
/// The current transport speed for ffwd and rew. Can be
|
||
|
|
/// set by wheel when they're pressed.
|
||
|
|
float transport_speed() const { return _transport_speed; }
|
||
|
|
|
||
|
|
/// one of -1,0,1
|
||
|
|
int transport_direction() const { return _transport_direction; }
|
||
|
|
void transport_direction( int rhs ) { _transport_direction = rhs; }
|
||
|
|
|
||
|
|
void push( State state );
|
||
|
|
void pop();
|
||
|
|
|
||
|
|
/// Turn zoom mode on and off
|
||
|
|
void zoom_state_toggle();
|
||
|
|
|
||
|
|
/**
|
||
|
|
Cycle scrub -> shuttle -> previous
|
||
|
|
*/
|
||
|
|
State scrub_state_cycle();
|
||
|
|
|
||
|
|
/// Check to see when the last scrub event was
|
||
|
|
/// And stop scrubbing if it was too long ago.
|
||
|
|
/// Intended to be called from a periodic timer of
|
||
|
|
/// some kind.
|
||
|
|
void check_scrubbing();
|
||
|
|
|
||
|
|
protected:
|
||
|
|
void add_scrub_interval( unsigned long elapsed );
|
||
|
|
float average_scrub_interval();
|
||
|
|
float std_dev_scrub_interval();
|
||
|
|
|
||
|
|
private:
|
||
|
|
MackieControlProtocol & _mcp;
|
||
|
|
|
||
|
|
/// transport speed for ffwd and rew, controller by jog
|
||
|
|
float _transport_speed;
|
||
|
|
int _transport_direction;
|
||
|
|
|
||
|
|
/// Speed for shuttle
|
||
|
|
float _shuttle_speed;
|
||
|
|
|
||
|
|
/// a stack for keeping track of states
|
||
|
|
std::stack<State> _jog_wheel_states;
|
||
|
|
|
||
|
|
/// So we know how fast to set the transport speed while scrubbing
|
||
|
|
Timer _scrub_timer;
|
||
|
|
|
||
|
|
/// to keep track of what the current scrub rate is
|
||
|
|
/// so we can calculate a moving average
|
||
|
|
std::deque<unsigned long> _scrub_intervals;
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|