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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/gamepad/gamepad_standard_mappings.h"
#include "content/common/gamepad_hardware_buffer.h"
namespace content {
namespace {
float AxisToButton(float input) {
return (input + 1.f) / 2.f;
}
float AxisNegativeAsButton(float input) {
return (input < -0.5f) ? 1.f : 0.f;
}
float AxisPositiveAsButton(float input) {
return (input > 0.5f) ? 1.f : 0.f;
}
void MapperXInputStyleGamepad(
const WebKit::WebGamepad& input,
WebKit::WebGamepad* mapped) {
*mapped = input;
mapped->buttons[kButtonLeftTrigger] = AxisToButton(input.axes[2]);
mapped->buttons[kButtonRightTrigger] = AxisToButton(input.axes[5]);
mapped->buttons[kButtonBackSelect] = input.buttons[6];
mapped->buttons[kButtonStart] = input.buttons[7];
mapped->buttons[kButtonLeftThumbstick] = input.buttons[9];
mapped->buttons[kButtonRightThumbstick] = input.buttons[10];
mapped->buttons[kButtonDpadUp] = AxisNegativeAsButton(input.axes[7]);
mapped->buttons[kButtonDpadDown] = AxisPositiveAsButton(input.axes[7]);
mapped->buttons[kButtonDpadLeft] = AxisNegativeAsButton(input.axes[6]);
mapped->buttons[kButtonDpadRight] = AxisPositiveAsButton(input.axes[6]);
mapped->buttons[kButtonMeta] = input.buttons[8];
mapped->axes[kAxisRightStickX] = input.axes[3];
mapped->axes[kAxisRightStickY] = input.axes[4];
mapped->buttonsLength = kNumButtons;
mapped->axesLength = kNumAxes;
}
void MapperMP8866(
const WebKit::WebGamepad& input,
WebKit::WebGamepad* mapped) {
*mapped = input;
mapped->buttons[kButtonPrimary] = input.buttons[2];
mapped->buttons[kButtonTertiary] = input.buttons[3];
mapped->buttons[kButtonQuaternary] = input.buttons[0];
mapped->buttons[kButtonLeftShoulder] = input.buttons[6];
mapped->buttons[kButtonRightShoulder] = input.buttons[7];
mapped->buttons[kButtonLeftTrigger] = input.buttons[4];
mapped->buttons[kButtonRightTrigger] = input.buttons[5];
mapped->buttons[kButtonBackSelect] = input.buttons[9];
mapped->buttons[kButtonStart] = input.buttons[8];
mapped->buttons[kButtonDpadUp] = AxisNegativeAsButton(input.axes[5]);
mapped->buttons[kButtonDpadDown] = AxisPositiveAsButton(input.axes[5]);
mapped->buttons[kButtonDpadLeft] = AxisNegativeAsButton(input.axes[4]);
mapped->buttons[kButtonDpadRight] = AxisPositiveAsButton(input.axes[4]);
mapped->buttonsLength = kNumButtons - 1; // no Meta on this device
mapped->axesLength = kNumAxes;
}
void MapperPlaystationSixAxis(
const WebKit::WebGamepad& input,
WebKit::WebGamepad* mapped) {
*mapped = input;
mapped->buttons[kButtonPrimary] = input.buttons[14];
mapped->buttons[kButtonSecondary] = input.buttons[13];
mapped->buttons[kButtonTertiary] = input.buttons[15];
mapped->buttons[kButtonQuaternary] = input.buttons[12];
mapped->buttons[kButtonLeftShoulder] = input.buttons[10];
mapped->buttons[kButtonRightShoulder] = input.buttons[11];
mapped->buttons[kButtonLeftTrigger] = AxisToButton(input.axes[12]);
mapped->buttons[kButtonRightTrigger] = AxisToButton(input.axes[13]);
mapped->buttons[kButtonBackSelect] = input.buttons[0];
mapped->buttons[kButtonStart] = input.buttons[3];
mapped->buttons[kButtonLeftThumbstick] = input.buttons[1];
mapped->buttons[kButtonRightThumbstick] = input.buttons[2];
mapped->buttons[kButtonDpadUp] = AxisToButton(input.axes[8]);
mapped->buttons[kButtonDpadDown] = AxisToButton(input.axes[10]);
mapped->buttons[kButtonDpadLeft] = input.buttons[7];
mapped->buttons[kButtonDpadRight] = AxisToButton(input.axes[9]);
mapped->buttons[kButtonMeta] = input.buttons[16];
mapped->buttonsLength = kNumButtons;
mapped->axesLength = kNumAxes;
}
struct MappingData {
const char* const vendor_id;
const char* const product_id;
GamepadStandardMappingFunction function;
} AvailableMappings[] = {
// http://www.linux-usb.org/usb.ids
{ "045e", "028e", MapperXInputStyleGamepad }, // Xbox 360 Controller
{ "045e", "028f", MapperXInputStyleGamepad }, // Xbox 360 Wireless Controller
{ "046d", "c21d", MapperXInputStyleGamepad }, // Logitech F310
{ "046d", "c21e", MapperXInputStyleGamepad }, // Logitech F510
{ "046d", "c21f", MapperXInputStyleGamepad }, // Logitech F710
{ "054c", "0268", MapperPlaystationSixAxis }, // Playstation SIXAXIS
{ "0925", "8866", MapperMP8866 }, // WiseGroup MP-8866
};
} // namespace
GamepadStandardMappingFunction GetGamepadStandardMappingFunction(
const base::StringPiece& vendor_id,
const base::StringPiece& product_id) {
for (size_t i = 0; i < arraysize(AvailableMappings); ++i) {
MappingData& item = AvailableMappings[i];
if (vendor_id == item.vendor_id && product_id == item.product_id)
return item.function;
}
return NULL;
}
} // namespace content
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