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/* $Id: buffer.c,v 1.5 2015/07/06 08:05:44 kristaps Exp $ */
/*
* Copyright (c) 2015 Kristaps Dzonsons <kristaps@bsd.lv>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "compat.h"
#include <assert.h>
#include <cairo.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include "kplot.h"
#include "extern.h"
struct kdata *
kdata_buffer_alloc(size_t hint)
{
struct kdata *d;
if (NULL == (d = calloc(1, sizeof(struct kdata))))
return(NULL);
d->pairsz = hint;
d->pairs = calloc(d->pairsz, sizeof(struct kpair));
if (NULL == d->pairs) {
free(d);
return(NULL);
}
d->refs = 1;
d->type = KDATA_BUFFER;
return(d);
}
int
kdata_buffer_copy(struct kdata *dst, const struct kdata *src)
{
void *p;
size_t i;
int rc = 1;
if (KDATA_BUFFER != dst->type)
return(0);
/*
* FIXME: use a pairbufsz-type of construct.
* We're not tied to any particular buffer size, so this should
* grow and shrink efficiently.
* Obviously, the current method is not efficient.
*/
if (src->pairsz > dst->pairsz) {
dst->pairsz = src->pairsz;
p = reallocarray(dst->pairs,
dst->pairsz, sizeof(struct kpair));
if (NULL == p)
return(0);
dst->pairs = p;
}
dst->pairsz = src->pairsz;
if (dst->depsz)
for (i = 0; 0 != rc && i < dst->pairsz; i++)
rc = kdata_set(dst, i,
src->pairs[i].x,
src->pairs[i].y);
else
memcpy(dst->pairs, src->pairs,
dst->pairsz * sizeof(struct kpair));
return(rc);
}
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