demultiplexerqueue.cc

来自「Linux下比较早的基于命令行的DVD播放器」· CC 代码 · 共 72 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 "DemultiplexerQueue.h"

#include "util/Log.h"

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

using dvd::demux::DemultiplexerQueue;

using dvd::packet::PacketQueue;

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

DemultiplexerQueue::DemultiplexerQueue(size_t capacity) :
    PacketQueue("dvd::demux::DemultiplexerQueue", capacity),
    threshold(capacity/3),
    filling(true)
{
}

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

void DemultiplexerQueue::reset()
{
    PacketQueue::reset();
    filling = true;
}

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

void DemultiplexerQueue::flush()
{
    if (filling) {
        filling = false;
        scheduleConsumer();
    }
}

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

bool DemultiplexerQueue::canConsume()
{
    if (filling) {
        filling = getSize() < threshold;
    }

    return !isEmpty() && !filling;
}

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