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
85
86
87
88
89
90
91
|
/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright (C) 2013 Intel Corporation
*
*/
#include <time.h>
#include <hardware/audio.h>
#if __BYTE_ORDER == __LITTLE_ENDIAN
struct rtp_header {
unsigned cc:4;
unsigned x:1;
unsigned p:1;
unsigned v:2;
unsigned pt:7;
unsigned m:1;
uint16_t sequence_number;
uint32_t timestamp;
uint32_t ssrc;
uint32_t csrc[0];
} __attribute__ ((packed));
#elif __BYTE_ORDER == __BIG_ENDIAN
struct rtp_header {
unsigned v:2;
unsigned p:1;
unsigned x:1;
unsigned cc:4;
unsigned m:1;
unsigned pt:7;
uint16_t sequence_number;
uint32_t timestamp;
uint32_t ssrc;
uint32_t csrc[0];
} __attribute__ ((packed));
#else
#error "Unknown byte order"
#endif
struct media_packet {
uint8_t data[0];
};
struct media_packet_rtp {
struct rtp_header hdr;
uint8_t data[0];
};
struct audio_input_config {
uint32_t rate;
uint32_t channels;
audio_format_t format;
};
struct audio_codec {
uint8_t type;
bool use_rtp;
bool (*load) (void);
void (*unload) (void);
int (*get_presets) (struct audio_preset *preset, size_t *len);
bool (*init) (struct audio_preset *preset, uint16_t mtu,
void **codec_data);
bool (*cleanup) (void *codec_data);
bool (*get_config) (void *codec_data,
struct audio_input_config *config);
size_t (*get_buffer_size) (void *codec_data);
size_t (*get_mediapacket_duration) (void *codec_data);
ssize_t (*encode_mediapacket) (void *codec_data, const uint8_t *buffer,
size_t len, struct media_packet *mp,
size_t mp_data_len, size_t *written);
bool (*update_qos) (void *codec_data, uint8_t op);
};
#define QOS_POLICY_DEFAULT 0x00
#define QOS_POLICY_DECREASE 0x01
typedef const struct audio_codec * (*audio_codec_get_t) (void);
const struct audio_codec *codec_sbc(void);
const struct audio_codec *codec_aptx(void);
|
