channel.h

linux下实现视频播放的播放器

/*
 *  Copyright (C) 2005-2007  gulikoza
 *
 *  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.
 */

/* $Id$ */

#ifndef CHANNEL_H
#define CHANNEL_H

#define MAX_CHANNELS 500

#include "log.h"

#define MODULE "Channel"

// delay to change channels
#define SWITCHDELAY 800

extern void ProcessEvents();

class Channel {
private:
    unsigned short last;
    unsigned short current;
    unsigned short num;

    Source * source;

    struct {
	char type;
	CStr name;
	CStr location;
    } channels[MAX_CHANNELS];

public:
    Channel():last(0),current(0),num(0),source(NULL) { }

    int Open(CStr&);
    bool Close();
    bool OpenFile(CStr&);
    bool SetChannel(unsigned int);
    void ToggleRecord();

    bool LastChannel() {
	return SetChannel(last);
    }

    bool NextChannel() {
	if(current == num)
	    return SetChannel(1);
	else
	    return SetChannel(current + 1);
    }

    bool PreviousChannel() {
	if(current == 1)
	    return SetChannel(num);
	else
	    return SetChannel(current - 1);
    }

    CStr GetName(int n = -1) {
	CStr ret;
	if(n < 0) ret = channels[current-1].name;
	else if(n < num) ret = channels[n].name;
	return ret;
    }

    unsigned int GetNum(bool all = false) {
	if(all) return num;
	return current;
    }

    ~Channel() {
	current = 0;
	Close();
    }
};

#undef MODULE

#ifdef DEBUG
#undef DEBUG
#endif

#endif // CHANNEL_H