blob: 1231d58a988ce5aa38be0a3b1fc43824283f2e9d [file] [log] [blame]
// Copyright (c) 2014 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.
#ifndef DEVICE_HID_HID_CONNECTION_LINUX_H_
#define DEVICE_HID_HID_CONNECTION_LINUX_H_
#include <stddef.h>
#include <stdint.h>
#include <queue>
#include "base/files/scoped_file.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "device/hid/hid_connection.h"
namespace base {
class SequencedTaskRunner;
}
namespace device {
class HidConnectionLinux : public HidConnection {
public:
HidConnectionLinux(
scoped_refptr<HidDeviceInfo> device_info,
base::ScopedFD fd,
scoped_refptr<base::SequencedTaskRunner> blocking_task_runner);
private:
friend class base::RefCountedThreadSafe<HidConnectionLinux>;
class BlockingTaskHelper;
~HidConnectionLinux() override;
// HidConnection implementation.
void PlatformClose() override;
void PlatformRead(const ReadCallback& callback) override;
void PlatformWrite(scoped_refptr<net::IOBuffer> buffer,
size_t size,
const WriteCallback& callback) override;
void PlatformGetFeatureReport(uint8_t report_id,
const ReadCallback& callback) override;
void PlatformSendFeatureReport(scoped_refptr<net::IOBuffer> buffer,
size_t size,
const WriteCallback& callback) override;
void ProcessInputReport(scoped_refptr<net::IOBuffer> buffer, size_t size);
void ProcessReadQueue();
// |helper_| lives on the sequence to which |blocking_task_runner_| posts
// tasks so all calls must be posted there including this object's
// destruction.
std::unique_ptr<BlockingTaskHelper> helper_;
const scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
std::queue<PendingHidReport> pending_reports_;
std::queue<PendingHidRead> pending_reads_;
SEQUENCE_CHECKER(sequence_checker_);
base::WeakPtrFactory<HidConnectionLinux> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(HidConnectionLinux);
};
} // namespace device
#endif // DEVICE_HID_HID_CONNECTION_LINUX_H_