1424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)// Copyright 2013 The Chromium Authors. All rights reserved. 2424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 3424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)// found in the LICENSE file. 4424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) 5424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)#include "media/base/keyboard_event_counter.h" 6424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) 7424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)#include "base/atomicops.h" 8424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)#include "base/logging.h" 9424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) 10424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)namespace media { 11424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) 12424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)KeyboardEventCounter::KeyboardEventCounter() : total_key_presses_(0) {} 13424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) 14424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)KeyboardEventCounter::~KeyboardEventCounter() {} 15424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) 16424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)void KeyboardEventCounter::Reset() { 17424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) pressed_keys_.clear(); 1858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) base::subtle::NoBarrier_Store( 1958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) reinterpret_cast<base::subtle::AtomicWord*>(&total_key_presses_), 0); 20424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)} 21424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) 22424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)void KeyboardEventCounter::OnKeyboardEvent(ui::EventType event, 23424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) ui::KeyboardCode key_code) { 24424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) // Updates the pressed keys and the total count of key presses. 25424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) if (event == ui::ET_KEY_PRESSED) { 26424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) if (pressed_keys_.find(key_code) != pressed_keys_.end()) 27424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) return; 28424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) pressed_keys_.insert(key_code); 29424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) base::subtle::NoBarrier_AtomicIncrement( 30424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) reinterpret_cast<base::subtle::AtomicWord*>(&total_key_presses_), 1); 31424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) } else { 32424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) DCHECK_EQ(ui::ET_KEY_RELEASED, event); 33424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) pressed_keys_.erase(key_code); 34424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) } 35424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)} 36424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) 37424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)size_t KeyboardEventCounter::GetKeyPressCount() const { 38424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) return base::subtle::NoBarrier_Load( 39424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) reinterpret_cast<const base::subtle::AtomicWord*>(&total_key_presses_)); 40424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)} 41424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) 42424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)} // namespace media 43