1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
* 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.
*/
#ifndef __DAV1D_DATA_H__
#define __DAV1D_DATA_H__
#include <stddef.h>
#include <stdint.h>
#include "common.h"
typedef struct Dav1dData {
const uint8_t *data; ///< data pointer
size_t sz; ///< data size
struct Dav1dRef *ref; ///< allocation origin
} Dav1dData;
/**
* Allocate data.
*
* @param data Input context.
* @param sz Size of the data that should be allocated.
*
* @return Pointer to the allocated buffer on success. NULL on error.
*/
DAV1D_API uint8_t * dav1d_data_create(Dav1dData *data, size_t sz);
/**
* Wrap an existing data array.
*
* @param data Input context.
* @param buf The data to be wrapped.
* @param sz Size of the data.
* @param free_callback Function to be called when we release our last
* reference to this data. In this callback, $buf will be
* the $buf argument to this function, and $user_data
* will be the $user_data input argument to this function.
* @param user_data Opaque parameter passed to free_callback().
*
* @return 0 on success. A negative errno value on error.
*/
DAV1D_API int dav1d_data_wrap(Dav1dData *data, const uint8_t *buf, size_t sz,
void (*free_callback)(const uint8_t *buf, void *user_data),
void *user_data);
/**
* Free the data reference.
*
* @param data Input context.
*/
DAV1D_API void dav1d_data_unref(Dav1dData *data);
#endif /* __DAV1D_DATA_H__ */
|
