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
dav1d_data_create_internal(Dav1dData * const buf,const size_t sz)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(sz);
48 if (!buf->ref) return NULL;
49 buf->data = buf->ref->const_data;
50 buf->sz = buf->m.size = sz;
51 dav1d_data_props_set_defaults(&buf->m);
52
53 return buf->ref->data;
54 }
55
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)56 int dav1d_data_wrap_internal(Dav1dData *const buf, const uint8_t *const ptr,
57 const size_t sz,
58 void (*const free_callback)(const uint8_t *data,
59 void *cookie),
60 void *const cookie)
61 {
62 validate_input_or_ret(buf != NULL, DAV1D_ERR(EINVAL));
63 validate_input_or_ret(ptr != NULL, DAV1D_ERR(EINVAL));
64 validate_input_or_ret(free_callback != NULL, DAV1D_ERR(EINVAL));
65
66 buf->ref = dav1d_ref_wrap(ptr, free_callback, cookie);
67 if (!buf->ref) return DAV1D_ERR(ENOMEM);
68 buf->data = ptr;
69 buf->sz = buf->m.size = sz;
70 dav1d_data_props_set_defaults(&buf->m);
71
72 return 0;
73 }
74
dav1d_data_wrap_user_data_internal(Dav1dData * const buf,const uint8_t * const user_data,void (* const free_callback)(const uint8_t * user_data,void * cookie),void * const cookie)75 int dav1d_data_wrap_user_data_internal(Dav1dData *const buf,
76 const uint8_t *const user_data,
77 void (*const free_callback)(const uint8_t *user_data,
78 void *cookie),
79 void *const cookie)
80 {
81 validate_input_or_ret(buf != NULL, DAV1D_ERR(EINVAL));
82 validate_input_or_ret(free_callback != NULL, DAV1D_ERR(EINVAL));
83
84 buf->m.user_data.ref = dav1d_ref_wrap(user_data, free_callback, cookie);
85 if (!buf->m.user_data.ref) return DAV1D_ERR(ENOMEM);
86 buf->m.user_data.data = user_data;
87
88 return 0;
89 }
90
91
dav1d_data_ref(Dav1dData * const dst,const Dav1dData * const src)92 void dav1d_data_ref(Dav1dData *const dst, const Dav1dData *const src) {
93 validate_input(dst != NULL);
94 validate_input(dst->data == NULL);
95 validate_input(src != NULL);
96
97 if (src->ref) {
98 validate_input(src->data != NULL);
99 dav1d_ref_inc(src->ref);
100 }
101 if (src->m.user_data.ref) dav1d_ref_inc(src->m.user_data.ref);
102 *dst = *src;
103 }
104
dav1d_data_props_copy(Dav1dDataProps * const dst,const Dav1dDataProps * const src)105 void dav1d_data_props_copy(Dav1dDataProps *const dst,
106 const Dav1dDataProps *const src)
107 {
108 assert(dst != NULL);
109 assert(src != NULL);
110
111 dav1d_ref_dec(&dst->user_data.ref);
112 *dst = *src;
113 if (dst->user_data.ref) dav1d_ref_inc(dst->user_data.ref);
114 }
115
dav1d_data_props_set_defaults(Dav1dDataProps * const props)116 void dav1d_data_props_set_defaults(Dav1dDataProps *const props) {
117 assert(props != NULL);
118
119 props->timestamp = INT64_MIN;
120 props->duration = 0;
121 props->offset = -1;
122 props->user_data.data = NULL;
123 props->user_data.ref = NULL;
124 }
125
dav1d_data_unref_internal(Dav1dData * const buf)126 void dav1d_data_unref_internal(Dav1dData *const buf) {
127 validate_input(buf != NULL);
128
129 struct Dav1dRef *user_data_ref = buf->m.user_data.ref;
130 if (buf->ref) {
131 validate_input(buf->data != NULL);
132 dav1d_ref_dec(&buf->ref);
133 }
134 memset(buf, 0, sizeof(*buf));
135 dav1d_ref_dec(&user_data_ref);
136 }
137