/* * 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 <errno.h>#include <stdint.h>#include <stdlib.h>#include <string.h> #include "dav1d/data.h" #include "common/attributes.h"#include "common/validate.h" #include "src/data.h"#include "src/ref.h" uint8_t *dav1d_data_create_internal(Dav1dData *const buf, const size_t sz) {    validate_input_or_ret(buf != NULL, NULL);     if (sz > SIZE_MAX / 2) return NULL;    buf->ref = dav1d_ref_create(sz);    if (!buf->ref) return NULL;    buf->data = buf->ref->const_data;    buf->sz = buf->m.size = sz;    dav1d_data_props_set_defaults(&buf->m);     return buf->ref->data;} int dav1d_data_wrap_internal(Dav1dData *const buf, const uint8_t *const ptr,                             const size_t sz,                             void (*const free_callback)(const uint8_t *data,                                                         void *cookie),                             void *const cookie){    validate_input_or_ret(buf != NULL, DAV1D_ERR(EINVAL));    validate_input_or_ret(ptr != NULL, DAV1D_ERR(EINVAL));    validate_input_or_ret(free_callback != NULL, DAV1D_ERR(EINVAL));     buf->ref = dav1d_ref_wrap(ptr, free_callback, cookie);    if (!buf->ref) return DAV1D_ERR(ENOMEM);    buf->data = ptr;    buf->sz = buf->m.size = sz;    dav1d_data_props_set_defaults(&buf->m);     return 0;} int dav1d_data_wrap_user_data_internal(Dav1dData *buf,                                       const uint8_t *const user_data,                                       void (*const free_callback)(const uint8_t *user_data,                                                                   void *cookie),                                       void *const cookie){    validate_input_or_ret(buf != NULL, DAV1D_ERR(EINVAL));    validate_input_or_ret(free_callback != NULL, DAV1D_ERR(EINVAL));     buf->m.user_data.ref = dav1d_ref_wrap(user_data, free_callback, cookie);    if (!buf->m.user_data.ref) return DAV1D_ERR(ENOMEM);    buf->m.user_data.data = user_data;     return 0;}  void dav1d_data_ref(Dav1dData *const dst, const Dav1dData *const src) {    validate_input(dst != NULL);    validate_input(dst->data == NULL);    validate_input(src != NULL);     if (src->ref) {        validate_input(src->data != NULL);        dav1d_ref_inc(src->ref);    }    if (src->m.user_data.ref) dav1d_ref_inc(src->m.user_data.ref);    *dst = *src;} void dav1d_data_move_ref(Dav1dData *const dst, Dav1dData *const src) {    validate_input(dst != NULL);    validate_input(dst->data == NULL);    validate_input(src != NULL);     if (src->ref)        validate_input(src->data != NULL);     *dst = *src;    memset(src, 0, sizeof(*src));} void dav1d_data_props_copy(Dav1dDataProps *const dst,                           const Dav1dDataProps *const src){    assert(dst != NULL);    assert(src != NULL);     dav1d_ref_dec(&dst->user_data.ref);    *dst = *src;    if (dst->user_data.ref) dav1d_ref_inc(dst->user_data.ref);} void dav1d_data_props_set_defaults(Dav1dDataProps *const props) {    assert(props != NULL);     props->timestamp = INT64_MIN;    props->duration = 0;    props->offset = -1;    props->user_data.data = NULL;    props->user_data.ref = NULL;} void dav1d_data_unref_internal(Dav1dData *buf) {    validate_input(buf != NULL);     struct Dav1dRef *user_data_ref = buf->m.user_data.ref;    if (buf->ref) {        validate_input(buf->data != NULL);        dav1d_ref_dec(&buf->ref);    }    memset(buf, 0, sizeof(*buf));    dav1d_ref_dec(&user_data_ref);}