lib.h

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/*
 * RVE: Realtime Video Effects
 * Copyright (C) 2002 Jonas Jensen <jbj@knef.dk>
 * 
 * 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.
 */

#ifndef _LIB_H
#define _LIB_H

#include <sys/poll.h>

#include <fcntl.h>

#include "bitmap.h"

#ifndef MIN
# define MAX(a, b) ((a) > (b) ? (a) : (b))
# define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif

#ifndef __GNUC__
# define __attribute__(x)
#endif

class Readfd {
public:
    Readfd(int fd): _fd(fd), _len(0), _pos(0), _buflimit(0), _buf(NULL) {
        _pollfd.fd = fd; _pollfd.events = POLLIN | POLLERR;

        int flags = fcntl(fd, F_GETFL, O_NONBLOCK);
        if (flags >= 0 && !(flags & O_NONBLOCK)) {
            fcntl(fd, F_SETFL, flags | O_NONBLOCK);
        }
    }
    ~Readfd() { free(_buf); }

    int read_line(std::string &str);

    int read_bytes(std::string &str, size_t count);

    int event(int timeout = -1);

    bool eof() { return _fd < 0; }

    size_t buflimit() { return _buflimit; }
    size_t buflimit(size_t set) { return _buflimit = set; }

protected:
    int _fd;
    size_t _len, _pos, _buflimit;
    char *_buf;
    struct pollfd _pollfd;
    
    static const size_t _readsize = 1024;
};


void blit(const Bitmap &bitmap, int xpos, int ypos, int alpha = 0, int clear=0);

void set_alpha(int width, int height, int xpos, int ypos, int alpha);

void clear(int width, int height, int xpos, int ypos);
void clear();


void text(RGBA &bitmap, int width, char *str, 
        int size = 0, char *align = "left");

void text_trimmed(RGBA &bitmap, int width, int height, 
        char *str, int size = 0, char *align = "left");

void text_constsize(RGBA &bitmap, char *str, 
        int size = 0, char *align = "left");

Bitmap *load_image(const char *filename);

Bitmap *load_image_from_mem(const char *ptr, size_t len);


void settimer_ms(int milliseconds);
int gettimer_ms();

void msleep(int msec);

int runtime();

int tcp_connect(const char *host, short port);

void msg(int level, char *format, ...) __attribute__((format (printf, 2, 3)));

int scalefont(int percent);

int center(int s, int S);

inline int inrange(int num, int lo, int hi);

#endif

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