ppapi/shared_impl/ppb_gamepad_shared.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ppapi/shared_impl/ppb_gamepad_shared.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/basictypes.h"
  10
  11 namespace ppapi {
  12
  13 const size_t WebKitGamepads::kItemsLengthCap;
  14
  15 void ConvertWebKitGamepadData(const WebKitGamepads& webkit_data,
  16                               PP_GamepadsSampleData* output_data) {
  17   size_t length = std::min(WebKitGamepads::kItemsLengthCap,
  18                            static_cast<const size_t>(webkit_data.length));
  19   output_data->length = static_cast<unsigned>(length);
  20   for (unsigned i = 0; i < length; ++i) {
  21     PP_GamepadSampleData& output_pad = output_data->items[i];
  22     const WebKitGamepad& webkit_pad = webkit_data.items[i];
  23     output_pad.connected = webkit_pad.connected ? PP_TRUE : PP_FALSE;
  24     if (webkit_pad.connected) {
  25       static_assert(sizeof(output_pad.id) == sizeof(webkit_pad.id),
  26                     "id size does not match");
  27       memcpy(output_pad.id, webkit_pad.id, sizeof(output_pad.id));
  28       output_pad.timestamp = static_cast<double>(webkit_pad.timestamp);
  29       output_pad.axes_length = webkit_pad.axes_length;
  30       for (unsigned j = 0; j < webkit_pad.axes_length; ++j)
  31         output_pad.axes[j] = static_cast<float>(webkit_pad.axes[j]);
  32       output_pad.buttons_length = webkit_pad.buttons_length;
  33       for (unsigned j = 0; j < webkit_pad.buttons_length; ++j)
  34         output_pad.buttons[j] = static_cast<float>(webkit_pad.buttons[j].value);
  35     }
  36   }
  37 }
  38
  39 }  // namespace ppapi