data.c (5111B)
1 /* 2 * Copyright © 2018, VideoLAN and dav1d authors 3 * Copyright © 2018, Two Orioles, LLC 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, this 10 * list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "config.h" 29 30 #include <errno.h> 31 #include <stdint.h> 32 #include <stdlib.h> 33 #include <string.h> 34 35 #include "dav1d/data.h" 36 37 #include "common/attributes.h" 38 #include "common/validate.h" 39 40 #include "src/data.h" 41 #include "src/ref.h" 42 43 uint8_t *dav1d_data_create_internal(Dav1dData *const buf, const size_t sz) { 44 validate_input_or_ret(buf != NULL, NULL); 45 46 if (sz > SIZE_MAX / 2) return NULL; 47 buf->ref = dav1d_ref_create(ALLOC_DAV1DDATA, sz); 48 if (!buf->ref) return NULL; 49 buf->data = buf->ref->const_data; 50 buf->sz = sz; 51 dav1d_data_props_set_defaults(&buf->m); 52 buf->m.size = sz; 53 54 return buf->ref->data; 55 } 56 57 int dav1d_data_wrap_internal(Dav1dData *const buf, const uint8_t *const ptr, 58 const size_t sz, 59 void (*const free_callback)(const uint8_t *data, 60 void *cookie), 61 void *const cookie) 62 { 63 validate_input_or_ret(buf != NULL, DAV1D_ERR(EINVAL)); 64 validate_input_or_ret(ptr != NULL, DAV1D_ERR(EINVAL)); 65 validate_input_or_ret(free_callback != NULL, DAV1D_ERR(EINVAL)); 66 67 if (sz > SIZE_MAX / 2) return DAV1D_ERR(EINVAL); 68 Dav1dRef *const ref = dav1d_malloc(ALLOC_DAV1DDATA, sizeof(Dav1dRef)); 69 if (!ref) return DAV1D_ERR(ENOMEM); 70 71 buf->ref = dav1d_ref_init(ref, ptr, free_callback, cookie, 1); 72 buf->data = ptr; 73 buf->sz = sz; 74 dav1d_data_props_set_defaults(&buf->m); 75 buf->m.size = sz; 76 77 return 0; 78 } 79 80 int dav1d_data_wrap_user_data_internal(Dav1dData *const buf, 81 const uint8_t *const user_data, 82 void (*const free_callback)(const uint8_t *user_data, 83 void *cookie), 84 void *const cookie) 85 { 86 validate_input_or_ret(buf != NULL, DAV1D_ERR(EINVAL)); 87 validate_input_or_ret(free_callback != NULL, DAV1D_ERR(EINVAL)); 88 89 Dav1dRef *const ref = dav1d_malloc(ALLOC_DAV1DDATA, sizeof(Dav1dRef)); 90 if (!ref) return DAV1D_ERR(ENOMEM); 91 92 buf->m.user_data.ref = dav1d_ref_init(ref, user_data, free_callback, cookie, 1); 93 buf->m.user_data.data = user_data; 94 95 return 0; 96 } 97 98 void dav1d_data_ref(Dav1dData *const dst, const Dav1dData *const src) { 99 assert(dst != NULL); 100 assert(dst->data == NULL); 101 assert(src != NULL); 102 103 if (src->ref) { 104 assert(src->data != NULL); 105 dav1d_ref_inc(src->ref); 106 } 107 if (src->m.user_data.ref) dav1d_ref_inc(src->m.user_data.ref); 108 *dst = *src; 109 } 110 111 void dav1d_data_props_copy(Dav1dDataProps *const dst, 112 const Dav1dDataProps *const src) 113 { 114 assert(dst != NULL); 115 assert(src != NULL); 116 117 dav1d_ref_dec(&dst->user_data.ref); 118 *dst = *src; 119 if (dst->user_data.ref) dav1d_ref_inc(dst->user_data.ref); 120 } 121 122 void dav1d_data_props_set_defaults(Dav1dDataProps *const props) { 123 assert(props != NULL); 124 125 memset(props, 0, sizeof(*props)); 126 props->timestamp = INT64_MIN; 127 props->offset = -1; 128 } 129 130 void dav1d_data_props_unref_internal(Dav1dDataProps *const props) { 131 validate_input(props != NULL); 132 133 struct Dav1dRef *user_data_ref = props->user_data.ref; 134 dav1d_data_props_set_defaults(props); 135 dav1d_ref_dec(&user_data_ref); 136 } 137 138 void dav1d_data_unref_internal(Dav1dData *const buf) { 139 validate_input(buf != NULL); 140 141 struct Dav1dRef *user_data_ref = buf->m.user_data.ref; 142 if (buf->ref) { 143 validate_input(buf->data != NULL); 144 dav1d_ref_dec(&buf->ref); 145 } 146 memset(buf, 0, sizeof(*buf)); 147 dav1d_data_props_set_defaults(&buf->m); 148 dav1d_ref_dec(&user_data_ref); 149 }