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/*
* Copyright © 2018, VideoLAN and dav1d authors
* Copyright © 2018, Two Orioles, LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "common/mem.h"
#include "src/ref.h"
static void default_free_callback(uint8_t *const data, void *const user_data) {
dav1d_free_aligned(data);
}
Dav1dRef *dav1d_ref_create(const size_t size) {
Dav1dRef *res;
void *data = dav1d_alloc_aligned(size, 32);
if (!data) {
return NULL;
}
res = dav1d_ref_wrap(data, default_free_callback, NULL);
if (!res) {
free(data);
}
return res;
}
Dav1dRef *dav1d_ref_wrap(uint8_t *const ptr,
void (*free_callback)(uint8_t *data, void *user_data),
void *user_data)
{
Dav1dRef *res = malloc(sizeof(Dav1dRef));
if (!res) return NULL;
res->data = ptr;
atomic_init(&res->ref_cnt, 1);
res->free_callback = free_callback;
res->user_data = user_data;
return res;
}
void dav1d_ref_inc(Dav1dRef *const ref) {
atomic_fetch_add(&ref->ref_cnt, 1);
}
void dav1d_ref_dec(Dav1dRef *const ref) {
if (atomic_fetch_sub(&ref->ref_cnt, 1) == 1) {
ref->free_callback(ref->data, ref->user_data);
free(ref);
}
}
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