1 files changed, 406 insertions, 0 deletions
diff --git a/Source/Core/InputCommon/ControllerInterface/SDL/SDL.cpp b/Source/Core/InputCommon/ControllerInterface/SDL/SDL.cpp
new file mode 100644
index 0000000000..24e0d0de58
--- /dev/null
+++ b/Source/Core/InputCommon/ControllerInterface/SDL/SDL.cpp
@@ -0,0 +1,406 @@
+
+#include "SDL.h"
+#include <StringUtil.h>
+
+#include <map>
+#include <sstream>
+#include <algorithm>
+
+#ifdef _WIN32
+#pragma comment(lib, "SDL2.lib")
+#endif
+
+namespace ciface
+{
+namespace SDL
+{
+
+std::string GetJoystickName(int index)
+{
+#if SDL_VERSION_ATLEAST(2, 0, 0)
+	return SDL_JoystickNameForIndex(index);
+#else
+	return SDL_JoystickName(index);
+#endif
+}
+
+void Init( std::vector<Core::Device*>& devices )
+{
+	// this is used to number the joysticks
+	// multiple joysticks with the same name shall get unique ids starting at 0
+	std::map<std::string, int>	name_counts;
+
+	if (SDL_Init( SDL_INIT_FLAGS ) >= 0)
+	{
+		// joysticks
+		for(int i = 0; i < SDL_NumJoysticks(); ++i)
+		{
+			SDL_Joystick* dev = SDL_JoystickOpen(i);
+			if (dev)
+			{
+				Joystick* js = new Joystick(dev, i, name_counts[GetJoystickName(i)]++);
+				// only add if it has some inputs/outputs
+				if (js->Inputs().size() || js->Outputs().size())
+					devices.push_back( js );
+				else
+					delete js;
+			}
+		}
+	}
+}
+
+Joystick::Joystick(SDL_Joystick* const joystick, const int sdl_index, const unsigned int index)
+	: m_joystick(joystick)
+	, m_sdl_index(sdl_index)
+	, m_index(index)
+{
+	// really bad HACKS:
+	// to not use SDL for an XInput device
+	// too many people on the forums pick the SDL device and ask:
+	// "why don't my 360 gamepad triggers/rumble work correctly"
+#ifdef _WIN32
+	// checking the name is probably good (and hacky) enough
+	// but I'll double check with the num of buttons/axes
+	std::string lcasename = GetName();
+	std::transform(lcasename.begin(), lcasename.end(), lcasename.begin(), tolower);
+
+	if ((std::string::npos != lcasename.find("xbox 360"))
+		&& (10 == SDL_JoystickNumButtons(joystick))
+		&& (5 == SDL_JoystickNumAxes(joystick))
+		&& (1 == SDL_JoystickNumHats(joystick))
+		&& (0 == SDL_JoystickNumBalls(joystick))
+		)
+	{
+		// this device won't be used
+		return;
+	}
+#endif
+
+	// get buttons
+	for (u8 i = 0; i != SDL_JoystickNumButtons(m_joystick); ++i)
+		AddInput(new Button(i, m_joystick));
+
+	// get hats
+	for (u8 i = 0; i != SDL_JoystickNumHats(m_joystick); ++i)
+	{
+		// each hat gets 4 input instances associated with it, (up down left right)
+		for (u8 d = 0; d != 4; ++d)
+			AddInput(new Hat(i, m_joystick, d));
+	}
+
+	// get axes
+	for (u8 i = 0; i != SDL_JoystickNumAxes(m_joystick); ++i)
+	{
+		// each axis gets a negative and a positive input instance associated with it
+		AddAnalogInputs(new Axis(i, m_joystick, -32768),
+			new Axis(i, m_joystick, 32767));
+	}
+
+#ifdef USE_SDL_HAPTIC
+	// try to get supported ff effects
+	m_haptic = SDL_HapticOpenFromJoystick( m_joystick );
+	if (m_haptic)
+	{
+		//SDL_HapticSetGain( m_haptic, 1000 );
+		//SDL_HapticSetAutocenter( m_haptic, 0 );
+
+		const unsigned int supported_effects = SDL_HapticQuery( m_haptic );
+
+		// constant effect
+		if (supported_effects & SDL_HAPTIC_CONSTANT)
+		{
+			m_state_out.push_back(EffectIDState());
+			AddOutput(new ConstantEffect(m_state_out.back()));
+		}
+
+		// ramp effect
+		if (supported_effects & SDL_HAPTIC_RAMP)
+		{
+			m_state_out.push_back(EffectIDState());
+			AddOutput(new RampEffect(m_state_out.back()));
+		}
+
+		// sine effect
+		if (supported_effects & SDL_HAPTIC_SINE)
+		{
+			m_state_out.push_back(EffectIDState());
+			AddOutput(new SineEffect(m_state_out.back()));
+		}
+
+#ifdef SDL_HAPTIC_SQUARE
+		// square effect
+		if (supported_effects & SDL_HAPTIC_SQUARE)
+		{
+			m_state_out.push_back(EffectIDState());
+			AddOutput(new SquareEffect(m_state_out.back()));
+		}
+#endif // defined(SDL_HAPTIC_SQUARE)
+
+		// triangle effect
+		if (supported_effects & SDL_HAPTIC_TRIANGLE)
+		{
+			m_state_out.push_back(EffectIDState());
+			AddOutput(new TriangleEffect(m_state_out.back()));
+		}
+	}
+#endif
+
+}
+
+Joystick::~Joystick()
+{
+#ifdef USE_SDL_HAPTIC
+	if (m_haptic)
+	{
+		// stop/destroy all effects
+		SDL_HapticStopAll(m_haptic);
+		for (auto &i : m_state_out)
+		{
+			if (i.id != -1)
+			{
+				SDL_HapticDestroyEffect(m_haptic, i.id);
+			}
+		}
+		// close haptic first
+		SDL_HapticClose(m_haptic);
+	}
+#endif
+
+	// close joystick
+	SDL_JoystickClose(m_joystick);
+}
+
+#ifdef USE_SDL_HAPTIC
+std::string Joystick::ConstantEffect::GetName() const
+{
+	return "Constant";
+}
+
+std::string Joystick::RampEffect::GetName() const
+{
+	return "Ramp";
+}
+
+std::string Joystick::SineEffect::GetName() const
+{
+	return "Sine";
+}
+
+#ifdef SDL_HAPTIC_SQUARE
+std::string Joystick::SquareEffect::GetName() const
+{
+	return "Square";
+}
+#endif // defined(SDL_HAPTIC_SQUARE)
+
+std::string Joystick::TriangleEffect::GetName() const
+{
+	return "Triangle";
+}
+
+void Joystick::ConstantEffect::SetState(ControlState state)
+{
+	if (state)
+	{
+		m_effect.effect.type = SDL_HAPTIC_CONSTANT;
+		m_effect.effect.constant.length = SDL_HAPTIC_INFINITY;
+	}
+	else
+	{
+		m_effect.effect.type = 0;
+	}
+
+	const Sint16 old = m_effect.effect.constant.level;
+	m_effect.effect.constant.level = (Sint16)(state * 0x7FFF);
+	if (old != m_effect.effect.constant.level)
+		m_effect.changed = true;
+}
+
+void Joystick::RampEffect::SetState(ControlState state)
+{
+	if (state)
+	{
+		m_effect.effect.type = SDL_HAPTIC_RAMP;
+		m_effect.effect.ramp.length = SDL_HAPTIC_INFINITY;
+	}
+	else
+	{
+		m_effect.effect.type = 0;
+	}
+
+	const Sint16 old = m_effect.effect.ramp.start;
+	m_effect.effect.ramp.start = (Sint16)(state * 0x7FFF);
+	if (old != m_effect.effect.ramp.start)
+		m_effect.changed = true;
+}
+
+void Joystick::SineEffect::SetState(ControlState state)
+{
+	if (state)
+	{
+		m_effect.effect.type = SDL_HAPTIC_SINE;
+		m_effect.effect.periodic.length = 250;
+	}
+	else
+	{
+		m_effect.effect.type = 0;
+	}
+
+	const Sint16 old = m_effect.effect.periodic.magnitude;
+	m_effect.effect.periodic.period = 5;
+	m_effect.effect.periodic.magnitude = (Sint16)(state * 0x5000);
+	m_effect.effect.periodic.attack_length = 0;
+	m_effect.effect.periodic.fade_length = 500;
+
+	if (old != m_effect.effect.periodic.magnitude)
+		m_effect.changed = true;
+}
+
+#ifdef SDL_HAPTIC_SQUARE
+void Joystick::SquareEffect::SetState(ControlState state)
+{
+	if (state)
+	{
+		m_effect.effect.type = SDL_HAPTIC_SQUARE;
+		m_effect.effect.periodic.length = 250;
+	}
+	else
+	{
+		m_effect.effect.type = 0;
+	}
+
+	const Sint16 old = m_effect.effect.periodic.magnitude;
+	m_effect.effect.periodic.period = 5;
+	m_effect.effect.periodic.magnitude = state * 0x5000;
+	m_effect.effect.periodic.attack_length = 0;
+	m_effect.effect.periodic.fade_length = 100;
+
+	if (old != m_effect.effect.periodic.magnitude)
+		m_effect.changed = true;
+}
+#endif // defined(SDL_HAPTIC_SQUARE)
+
+void Joystick::TriangleEffect::SetState(ControlState state)
+{
+	if (state)
+	{
+		m_effect.effect.type = SDL_HAPTIC_TRIANGLE;
+		m_effect.effect.periodic.length = 250;
+	}
+	else
+	{
+		m_effect.effect.type = 0;
+	}
+
+	const Sint16 old = m_effect.effect.periodic.magnitude;
+	m_effect.effect.periodic.period = 5;
+	m_effect.effect.periodic.magnitude = (Sint16)(state * 0x5000);
+	m_effect.effect.periodic.attack_length = 0;
+	m_effect.effect.periodic.fade_length = 100;
+
+	if (old != m_effect.effect.periodic.magnitude)
+		m_effect.changed = true;
+}
+#endif
+
+bool Joystick::UpdateInput()
+{
+	// each joystick is doin this, o well
+	SDL_JoystickUpdate();
+
+	return true;
+}
+
+bool Joystick::UpdateOutput()
+{
+#ifdef USE_SDL_HAPTIC
+	for (auto &i : m_state_out)
+	{
+		if (i.changed)	// if SetState was called on this output
+		{
+			if (-1 == i.id)	// effect isn't currently uploaded
+			{
+				if (i.effect.type)		// if outputstate is >0  this would be true
+				{
+					if ((i.id = SDL_HapticNewEffect(m_haptic, &i.effect)) > -1)	// upload the effect
+					{
+						SDL_HapticRunEffect(m_haptic, i.id, 1);	// run the effect
+					}
+				}
+			}
+			else	// effect is already uploaded
+			{
+				if (i.effect.type)	// if ouputstate >0
+				{
+					SDL_HapticUpdateEffect(m_haptic, i.id, &i.effect);	// update the effect
+				}
+				else
+				{
+					SDL_HapticStopEffect(m_haptic, i.id);	// else, stop and remove the effect
+					SDL_HapticDestroyEffect(m_haptic, i.id);
+					i.id = -1;	// mark it as not uploaded
+				}
+			}
+
+			i.changed = false;
+		}
+	}
+#endif
+	return true;
+}
+
+std::string Joystick::GetName() const
+{
+	return StripSpaces(GetJoystickName(m_sdl_index));
+}
+
+std::string Joystick::GetSource() const
+{
+	return "SDL";
+}
+
+int Joystick::GetId() const
+{
+	return m_index;
+}
+
+std::string Joystick::Button::GetName() const
+{
+	std::ostringstream ss;
+	ss << "Button " << (int)m_index;
+	return ss.str();
+}
+
+std::string Joystick::Axis::GetName() const
+{
+	std::ostringstream ss;
+	ss << "Axis " << (int)m_index << (m_range<0 ? '-' : '+');
+	return ss.str();
+}
+
+std::string Joystick::Hat::GetName() const
+{
+	static char tmpstr[] = "Hat . .";
+	// I don't think more than 10 hats are supported
+	tmpstr[4] = (char)('0' + m_index);
+	tmpstr[6] = "NESW"[m_direction];
+	return tmpstr;
+}
+
+ControlState Joystick::Button::GetState() const
+{
+	return SDL_JoystickGetButton(m_js, m_index);
+}
+
+ControlState Joystick::Axis::GetState() const
+{
+	return std::max(0.0f, ControlState(SDL_JoystickGetAxis(m_js, m_index)) / m_range);
+}
+
+ControlState Joystick::Hat::GetState() const
+{
+	return (SDL_JoystickGetHat(m_js, m_index) & (1 << m_direction)) > 0;
+}
+
+}
+}