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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.
*/
#ifndef DAV1D_SRC_REF_H
#define DAV1D_SRC_REF_H
#include "dav1d/dav1d.h"
#include "src/mem.h"
#include "src/thread.h"
#include <stdatomic.h>
#include <stddef.h>
struct Dav1dRef {
void *data;
const void *const_data;
atomic_int ref_cnt;
int free_ref;
void (*free_callback)(const uint8_t *data, void *user_data);
void *user_data;
};
#if !TRACK_HEAP_ALLOCATIONS
#define dav1d_ref_create(type, size) dav1d_ref_create(size)
#endif
Dav1dRef *dav1d_ref_create(enum AllocationType type, size_t size);
Dav1dRef *dav1d_ref_create_using_pool(Dav1dMemPool *pool, size_t size);
void dav1d_ref_dec(Dav1dRef **ref);
static inline Dav1dRef *dav1d_ref_init(Dav1dRef *const ref, const void *const ptr,
void (*const free_callback)(const uint8_t *data, void *user_data),
void *const user_data, const int free_ref)
{
ref->data = NULL;
ref->const_data = ptr;
atomic_init(&ref->ref_cnt, 1);
ref->free_ref = free_ref;
ref->free_callback = free_callback;
ref->user_data = user_data;
return ref;
}
static inline void dav1d_ref_inc(Dav1dRef *const ref) {
atomic_fetch_add_explicit(&ref->ref_cnt, 1, memory_order_relaxed);
}
static inline int dav1d_ref_is_writable(Dav1dRef *const ref) {
return atomic_load(&ref->ref_cnt) == 1 && ref->data;
}
#endif /* DAV1D_SRC_REF_H */