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// Copyright 2010 Christophe Henry
// henry UNDERSCORE christophe AT hotmail DOT com
// This is an extended version of the state machine available in the boost::mpl library
// Distributed under the same license as the original.
// Copyright for the original version:
// Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed
// under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef PLAYING_MODE_HPP
#define PLAYING_MODE_HPP
#include <iostream>
#include <boost/any.hpp>
#define FUSION_MAX_VECTOR_SIZE 20
#include "Events.hpp"
#include <boost/msm/back/favor_compile_time.hpp>
#include <boost/msm/back/state_machine.hpp>
#include <boost/msm/front/state_machine_def.hpp>
#include <boost/msm/front/euml/euml.hpp>
using namespace std;
namespace msm = boost::msm;
namespace euml = boost::msm::front::euml;
struct PlayingMode_ : public msm::front::state_machine_def<PlayingMode_>
{
//flags
struct NoFastFwd{};
struct Playing : public msm::front::state<default_base_state,msm::front::sm_ptr>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& )
{
std::cout << "starting: PlayingMode::Playing" << std::endl;
std::cout << "playing song:" << m_fsm->get_current_song() << std::endl;
}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {std::cout << "finishing: PlayingMode::Playing" << std::endl;}
void set_sm_ptr(PlayingMode_* pl)
{
m_fsm = pl;
}
private:
PlayingMode_* m_fsm;
};
struct Paused : public msm::front::state<>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {std::cout << "starting: PlayingMode::Paused" << std::endl;}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {std::cout << "finishing: PlayingMode::Paused" << std::endl;}
};
struct WaitingForNextPrev : public msm::front::state<>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {std::cout << "starting: PlayingMode::WaitingForNextPrev" << std::endl;}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {std::cout << "finishing: PlayingMode::WaitingForNextPrev" << std::endl;}
};
struct WaitingForEnd : public msm::front::state<>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {std::cout << "starting: PlayingMode::WaitingForEnd" << std::endl;}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {std::cout << "finishing: PlayingMode::WaitingForEnd" << std::endl;}
};
struct NoForward : public msm::front::state<>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {std::cout << "starting: PlayingMode::NoForward" << std::endl;}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {std::cout << "finishing: PlayingMode::NoForward" << std::endl;}
};
struct ForwardPressed : public msm::front::state<>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& )
{
std::cout << "starting: PlayingMode::ForwardPressed," << "start timer" << std::endl;
}
template <class Event,class FSM>
void on_exit(Event const&,FSM& )
{
std::cout << "finishing: PlayingMode::ForwardPressed," << "stop timer" << std::endl;
}
};
struct FastForward : public msm::front::state<>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& )
{
std::cout << "starting: PlayingMode::FastForward," << "start timer" << std::endl;
}
template <class Event,class FSM>
void on_exit(Event const&,FSM& )
{
std::cout << "finishing: PlayingMode::FastForward," << "stop timer" << std::endl;
}
};
struct StdDisplay : public msm::front::state<>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {std::cout << "starting: PlayingMode::StdDisplay" << std::endl;}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {std::cout << "finishing: PlayingMode::StdDisplay" << std::endl;}
};
struct SetPosition : public msm::front::state<>
{
typedef mpl::vector1<NoFastFwd> flag_list;
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {std::cout << "starting: PlayingMode::SetPosition" << std::endl;}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {std::cout << "finishing: PlayingMode::SetPosition" << std::endl;}
};
struct SetMark : public msm::front::state<>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {std::cout << "starting: PlayingMode::SetMark" << std::endl;}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {std::cout << "finishing: PlayingMode::SetMark" << std::endl;}
};
struct PlayingExit : public msm::front::exit_pseudo_state<EndPlay>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {std::cout << "starting: PlayingMode::PlayingExit" << std::endl;}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {std::cout << "finishing: PlayingMode::PlayingExit" << std::endl;}
};
// transition action methods
struct inc_song_counter : euml::euml_action<inc_song_counter>
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM& fsm,SourceState& ,TargetState& )
{
if (++fsm.m_SongIndex <= fsm.m_NumberOfSongs )
{
std::cout << "playing song:" << fsm.m_SongIndex << std::endl;
}
else
{
// last song => end playing, next play will start at the beginning
fsm.m_SongIndex = 1;
fsm.process_event(EndPlay());
}
}
};
void select_song(StartSong const& evt)
{
if ((evt.m_Selected>0) && (evt.m_Selected<=m_NumberOfSongs))
{
m_SongIndex = evt.m_Selected;
std::cout << "selecting song:" << m_SongIndex << std::endl;
}
else
{
// play current song
std::cout << "selecting song:" << m_SongIndex << std::endl;
}
}
struct dec_song_counter : euml::euml_action<dec_song_counter>
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM& fsm,SourceState& ,TargetState& )
{
if (--fsm.m_SongIndex >0 )
{
std::cout << "playing song:" << fsm.m_SongIndex << std::endl;
}
else
{
// before first song => end playing
fsm.m_SongIndex = 1;
fsm.process_event(EndPlay());
}
}
};
struct send_NextSong : euml::euml_action<send_NextSong>
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM& fsm,SourceState& ,TargetState& )
{
fsm.process_event(NextSong());
}
};
void do_fast_forward(ForwardTimer const&)
{
std::cout << "moving song forward..." << std::endl;
}
// transition guard methods
struct fast_fwd_ok : euml::euml_action<fast_fwd_ok>
{
template <class FSM,class EVT,class SourceState,class TargetState>
bool operator()(EVT const& ,FSM& fsm,SourceState& ,TargetState& )
{
// guard accepts only if fast forward is possible (No SetPosition mode)
return !fsm.is_flag_active<NoFastFwd>();
}
};
// initial states / orthogonal zones
typedef mpl::vector5<Playing,WaitingForNextPrev,WaitingForEnd,NoForward,StdDisplay>
initial_state;
typedef PlayingMode_ fsm; // makes transition table cleaner
// Transition table for player
struct transition_table : mpl::vector19<
// Start Event Next Action Guard
// +--------------------+---------------------+--------------------+--------------------------+----------------------+
_row < Playing , PlayPause , Paused >,
_row < Playing , Off , Paused >,
a_row < Playing , StartSong , Playing , &fsm::select_song >,
_row < Paused , PlayPause , Playing >,
msm::front::Row < Playing , SongFinished , Playing , inc_song_counter , msm::front::none >,
a_row < Paused , StartSong , Playing , &fsm::select_song >,
// +--------------------+---------------------+--------------------+--------------------------+----------------------+
msm::front::Row < WaitingForNextPrev , PreviousSong , WaitingForNextPrev , dec_song_counter , msm::front::none >,
msm::front::Row < WaitingForNextPrev , NextSong , WaitingForNextPrev , inc_song_counter , msm::front::none >,
// +--------------------+---------------------+--------------------+--------------------------+----------------------+
_row < WaitingForEnd , EndPlay , PlayingExit >,
// +--------------------+---------------------+--------------------+--------------------------+----------------------+
msm::front::Row < NoForward , EastPressed , ForwardPressed , msm::front::none , fast_fwd_ok >,
msm::front::Row < ForwardPressed , EastReleased , NoForward , send_NextSong , msm::front::none >,
a_row < ForwardPressed , ForwardTimer , FastForward , &fsm::do_fast_forward >,
a_row < FastForward , ForwardTimer , FastForward , &fsm::do_fast_forward >,
_row < FastForward , EastReleased , NoForward >,
// +--------------------+---------------------+---------------------+--------------------------+----------------------+
_row < StdDisplay , PlayingMiddleButton , SetPosition >,
_row < SetPosition , StartSong , StdDisplay >,
_row < SetPosition , PlayingMiddleButton , SetMark >,
_row < SetMark , PlayingMiddleButton , StdDisplay >,
_row < SetMark , StartSong , StdDisplay >
// +--------------------+---------------------+---------------------+--------------------------+----------------------+
> {};
PlayingMode_():
m_SongIndex(1),
// for simplicity we decide there are 5 songs
m_NumberOfSongs(5){}
int get_current_song(){return m_SongIndex;}
int m_SongIndex;
int m_NumberOfSongs;
};
typedef msm::back::state_machine<PlayingMode_> PlayingMode;
#endif // PLAYING_MODE_HPP
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