readerinputhandler.cc

来自「Linux下比较早的基于命令行的DVD播放器」· CC 代码 · 共 75 行

//
// Copyright (c) 2003 by Istv醤 V醨adi
//
// This file is part of dxr3Player, a DVD player written specifically 
// for the DXR3 (aka Hollywood+) decoder card.

// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

//------------------------------------------------------------------------------

#include "ReaderInputHandler.h"

#include "sched/Scheduler.h"

#include "util/POSIX.h"

//------------------------------------------------------------------------------

using input::ReaderInputHandler;

using sched::Schedulable;
using sched::Scheduler;

//------------------------------------------------------------------------------

ReaderInputHandler::ReaderInputHandler(InputListener& listener,
                                       const char* name,
                                       const Sequence* sequences) :
    CharInputHandler(listener, sequences),
    Schedulable(name, 16 * 1024),
    inputReadable(name, "inputReadable")
{
}

//------------------------------------------------------------------------------

void ReaderInputHandler::start(int f)
{
    inputReadable.setFileDescriptor(f);
}

//------------------------------------------------------------------------------

void ReaderInputHandler::run()
{
    while(!shouldQuit()) {
        clearInterrupt();

        if (Scheduler::waitInterruptible(inputReadable)) {
            char c;
            ssize_t len =
                POSIX::read(inputReadable.getFileDescriptor(), 
                            &c, sizeof(c));

            if (len==sizeof(c)) {
                add(c);
            }
        }
    }
}

//------------------------------------------------------------------------------