blob: fba4322f854014615a972ecd6d7ab353d4c15bce (
plain)
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
78
79
80
81
82
83
84
|
/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_AOM_AOM_FRAME_BUFFER_H_
#define AOM_AOM_AOM_FRAME_BUFFER_H_
/*!\file
* \brief Describes the decoder external frame buffer interface.
*/
#ifdef __cplusplus
extern "C" {
#endif
#include "aom/aom_integer.h"
/*!\brief The maximum number of work buffers used by libaom.
* Support maximum 4 threads to decode video in parallel.
* Each thread will use one work buffer.
* TODO(hkuang): Add support to set number of worker threads dynamically.
*/
#define AOM_MAXIMUM_WORK_BUFFERS 8
/*!\brief The maximum number of reference buffers that a AV1 encoder may use.
*/
#define AOM_MAXIMUM_REF_BUFFERS 8
/*!\brief External frame buffer
*
* This structure holds allocated frame buffers used by the decoder.
*/
typedef struct aom_codec_frame_buffer {
uint8_t *data; /**< Pointer to the data buffer */
size_t size; /**< Size of data in bytes */
void *priv; /**< Frame's private data */
} aom_codec_frame_buffer_t;
/*!\brief get frame buffer callback prototype
*
* This callback is invoked by the decoder to retrieve data for the frame
* buffer in order for the decode call to complete. The callback must
* allocate at least min_size in bytes and assign it to fb->data. The callback
* must zero out all the data allocated. Then the callback must set fb->size
* to the allocated size. The application does not need to align the allocated
* data. The callback is triggered when the decoder needs a frame buffer to
* decode a compressed image into. This function may be called more than once
* for every call to aom_codec_decode. The application may set fb->priv to
* some data which will be passed back in the ximage and the release function
* call. |fb| is guaranteed to not be NULL. On success the callback must
* return 0. Any failure the callback must return a value less than 0.
*
* \param[in] priv Callback's private data
* \param[in] new_size Size in bytes needed by the buffer
* \param[in,out] fb Pointer to aom_codec_frame_buffer_t
*/
typedef int (*aom_get_frame_buffer_cb_fn_t)(void *priv, size_t min_size,
aom_codec_frame_buffer_t *fb);
/*!\brief release frame buffer callback prototype
*
* This callback is invoked by the decoder when the frame buffer is not
* referenced by any other buffers. |fb| is guaranteed to not be NULL. On
* success the callback must return 0. Any failure the callback must return
* a value less than 0.
*
* \param[in] priv Callback's private data
* \param[in] fb Pointer to aom_codec_frame_buffer_t
*/
typedef int (*aom_release_frame_buffer_cb_fn_t)(void *priv,
aom_codec_frame_buffer_t *fb);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AOM_AOM_FRAME_BUFFER_H_
|
