ref.h 2.03 KB
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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.
 */

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#ifndef DAV1D_SRC_REF_H
#define DAV1D_SRC_REF_H
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#include "dav1d/dav1d.h"

#include <stdatomic.h>
#include <stddef.h>

struct Dav1dRef {
    void *data;
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    const void *const_data;
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    atomic_int ref_cnt;
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    void (*free_callback)(const uint8_t *data, void *user_data);
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    void *user_data;
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};

Dav1dRef *dav1d_ref_create(size_t size);
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Dav1dRef *dav1d_ref_wrap(const uint8_t *ptr,
                         void (*free_callback)(const uint8_t *data, void *user_data),
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                         void *user_data);
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void dav1d_ref_inc(Dav1dRef *ref);
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void dav1d_ref_dec(Dav1dRef **ref);
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int dav1d_ref_is_writable(Dav1dRef *ref);

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#endif /* DAV1D_SRC_REF_H */