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/*
* Copyright (C) 2000-2001 the xine project
*
* This file is part of xine, a unix video player.
*
* xine 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.
*
* xine 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: scratch.c,v 1.7 2002/03/01 09:29:50 guenter Exp $
*
* top-level xine functions
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdarg.h>
#include <string.h> /* For memset */
#include "scratch.h"
#include "xineutils.h"
/*
#define LOG
*/
static void scratch_printf (scratch_buffer_t *this, const char *format, va_list argp) {
vsnprintf (this->lines[this->cur], 1023, format, argp);
#ifdef LOG
printf ("scratch: printing format %s to line %d\n",
format, this->cur);
#endif
this->cur = (this->cur + 1) % this->num_lines;
}
static char **scratch_get_content (scratch_buffer_t *this) {
int i, j;
for(i = 0, j = (this->cur - 1); i < this->num_lines; i++, j--) {
if(j < 0)
j = (this->num_lines - 1);
this->ordered[i] = this->lines[j];
#ifdef LOG
printf ("scratch: line %d contains >%s<\n", i , this->lines[j]);
#endif
}
return this->ordered;
}
static void scratch_dispose (scratch_buffer_t *this) {
int i;
for(i = 0; i < this->num_lines; i++ ) {
free (this->lines[i]);
}
free (this->lines);
free (this->ordered);
free (this);
}
scratch_buffer_t *new_scratch_buffer (int num_lines) {
scratch_buffer_t *this;
int i;
this = xine_xmalloc (sizeof (scratch_buffer_t));
this->lines = xine_xmalloc (sizeof (char *) * (num_lines + 1));
this->ordered = xine_xmalloc (sizeof (char *) * (num_lines + 1));
for (i=0; i<num_lines; i++) {
this->lines[i] = (char *) xine_xmalloc (sizeof(char) * 1024);
memset(this->lines[i], 0, sizeof(this->lines[i]));
}
this->ordered[i] = NULL;
this->lines[i] = NULL;
this->scratch_printf = scratch_printf;
this->get_content = scratch_get_content;
this->dispose = scratch_dispose;
this->num_lines = num_lines;
this->cur = 0;
return this;
}
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