Revert 116724 - Add gamepad data fetcher for Linux

content/browser/gamepad/gamepad_standard_mappings_linux.cc

-// 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_linux.h"
-
-#include "content/common/gamepad_hardware_buffer.h"
-
-namespace content {
-
-namespace {
-
-// This defines our canonical mapping order for gamepad-like devices. If these
-// items cannot all be satisfied, it is a case-by-case judgement as to whether
-// it is better to leave the device unmapped, or to partially map it. In
-// general, err towards leaving it *unmapped* so that content can handle
-// appropriately.
-
-enum CanonicalButtonIndex {
-  kButtonPrimary,
-  kButtonSecondary,
-  kButtonTertiary,
-  kButtonQuaternary,
-  kButtonLeftShoulder,
-  kButtonRightShoulder,
-  kButtonLeftTrigger,
-  kButtonRightTrigger,
-  kButtonBackSelect,
-  kButtonStart,
-  kButtonLeftThumbstick,
-  kButtonRightThumbstick,
-  kButtonDpadUp,
-  kButtonDpadDown,
-  kButtonDpadLeft,
-  kButtonDpadRight,
-  kButtonMeta,
-  kNumButtons
-};
-
-enum CanonicalAxisIndex {
-  kAxisLeftStickX,
-  kAxisLeftStickY,
-  kAxisRightStickX,
-  kAxisRightStickY,
-  kNumAxes
-};
-
-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