ref: d05f62bd64e391c8944adf4b5aa861144ccba055
dir: /src/ref.c/
/* * 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 = malloc(sizeof(Dav1dRef)); void *data = dav1d_alloc_aligned(size, 32); if (!res || !data) { if (res) free(res); if (data) free(data); return NULL; } res->size = size; atomic_init(&res->ref_cnt, 1); res->data = data; res->free_callback = default_free_callback; return res; } Dav1dRef *dav1d_ref_wrap(uint8_t *const ptr, const size_t sz, void (*free_callback)(uint8_t *data, void *user_data), void *user_data) { Dav1dRef *res = malloc(sizeof(Dav1dRef)); if (!res) return NULL; res->data = ptr; res->size = sz; 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); } }