libosmocodec 1.7.0.61-0d9b6.202211030053
Osmocom codec library
codec.h
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1
3#pragma once
4
5#include <stdint.h>
6#include <stdbool.h>
7
9#include <osmocom/core/bits.h>
10
11/* TS 101318 Chapter 5.1: 260 bits + 4bit sig */
12#define GSM_FR_BYTES 33
13/* TS 101318 Chapter 5.2: 112 bits, no sig */
14#define GSM_HR_BYTES 14
15/* TS 101318 Chapter 5.3: 244 bits + 4bit sig */
16#define GSM_EFR_BYTES 31
17
18extern const uint16_t gsm610_bitorder[]; /* FR */
19extern const uint16_t gsm620_unvoiced_bitorder[]; /* HR unvoiced */
20extern const uint16_t gsm620_voiced_bitorder[]; /* HR voiced */
21extern const uint16_t gsm660_bitorder[]; /* EFR */
22
23extern const uint16_t gsm690_12_2_bitorder[]; /* AMR 12.2 kbits */
24extern const uint16_t gsm690_10_2_bitorder[]; /* AMR 10.2 kbits */
25extern const uint16_t gsm690_7_95_bitorder[]; /* AMR 7.95 kbits */
26extern const uint16_t gsm690_7_4_bitorder[]; /* AMR 7.4 kbits */
27extern const uint16_t gsm690_6_7_bitorder[]; /* AMR 6.7 kbits */
28extern const uint16_t gsm690_5_9_bitorder[]; /* AMR 5.9 kbits */
29extern const uint16_t gsm690_5_15_bitorder[]; /* AMR 5.15 kbits */
30extern const uint16_t gsm690_4_75_bitorder[]; /* AMR 4.75 kbits */
31
32extern const struct value_string osmo_amr_type_names[];
33
48};
49
50static inline const char *osmo_amr_type_name(enum osmo_amr_type type)
52
55 AMR_GOOD = 1
56};
57
58extern const uint8_t gsm690_bitlength[AMR_NO_DATA+1];
59
60int osmo_amr_s_to_d(ubit_t *out, const ubit_t *in, uint16_t n_bits, enum osmo_amr_type amr_mode);
61int osmo_amr_d_to_s(ubit_t *out, const ubit_t *in, uint16_t n_bits, enum osmo_amr_type amr_mode);
62
67static inline bool osmo_amr_is_speech(enum osmo_amr_type ft)
68{
69 switch (ft) {
70 case AMR_4_75:
71 case AMR_5_15:
72 case AMR_5_90:
73 case AMR_6_70:
74 case AMR_7_40:
75 case AMR_7_95:
76 case AMR_10_2:
77 case AMR_12_2:
78 return true;
79 default:
80 return false;
81 }
82}
83
84bool osmo_fr_check_sid(const uint8_t *rtp_payload, size_t payload_len);
85bool osmo_hr_check_sid(const uint8_t *rtp_payload, size_t payload_len);
86int osmo_amr_rtp_enc(uint8_t *payload, uint8_t cmr, enum osmo_amr_type ft,
87 enum osmo_amr_quality bfi);
88int osmo_amr_rtp_dec(const uint8_t *payload, int payload_len, uint8_t *cmr,
89 int8_t *cmi, enum osmo_amr_type *ft,
90 enum osmo_amr_quality *bfi, int8_t *sti);
const uint16_t gsm690_10_2_bitorder[]
Definition: gsm690.c:73
bool osmo_fr_check_sid(const uint8_t *rtp_payload, size_t payload_len)
Check whether RTP frame contains FR SID code word according to TS 101 318 §5.1.2.
Definition: gsm610.c:305
const uint8_t gsm690_bitlength[AMR_NO_DATA+1]
These constants refer to the length of one "AMR core frame" as per TS 26.101 Section 4....
Definition: gsm690.c:219
const uint16_t gsm690_7_4_bitorder[]
Definition: gsm690.c:124
const uint16_t gsm690_5_9_bitorder[]
Definition: gsm690.c:167
const uint16_t gsm690_4_75_bitorder[]
Definition: gsm690.c:204
const uint16_t gsm690_5_15_bitorder[]
Definition: gsm690.c:186
static const char * osmo_amr_type_name(enum osmo_amr_type type)
Definition: codec.h:50
int osmo_amr_d_to_s(ubit_t *out, const ubit_t *in, uint16_t n_bits, enum osmo_amr_type amr_mode)
Convert from d-bits to s-bits (codec input).
Definition: gsm690.c:304
int osmo_amr_rtp_enc(uint8_t *payload, uint8_t cmr, enum osmo_amr_type ft, enum osmo_amr_quality bfi)
Encode various AMR parameters from RTP payload (RFC 4867)
Definition: gsm690.c:408
osmo_amr_type
Definition: codec.h:34
@ AMR_NO_DATA
Definition: codec.h:47
@ AMR_4_75
Definition: codec.h:35
@ AMR_12_2
Definition: codec.h:42
@ AMR_7_40
Definition: codec.h:39
@ AMR_10_2
Definition: codec.h:41
@ AMR_6_70
Definition: codec.h:38
@ AMR_GSM_EFR_SID
Definition: codec.h:44
@ AMR_PDC_EFR_SID
Definition: codec.h:46
@ AMR_SID
Definition: codec.h:43
@ AMR_5_90
Definition: codec.h:37
@ AMR_5_15
Definition: codec.h:36
@ AMR_7_95
Definition: codec.h:40
@ AMR_TDMA_EFR_SID
Definition: codec.h:45
static bool osmo_amr_is_speech(enum osmo_amr_type ft)
Check if given AMR Frame Type is a speech frame.
Definition: codec.h:67
int osmo_amr_rtp_dec(const uint8_t *payload, int payload_len, uint8_t *cmr, int8_t *cmi, enum osmo_amr_type *ft, enum osmo_amr_quality *bfi, int8_t *sti)
Decode various AMR parameters from RTP payload (RFC 4867) acording to 3GPP TS 26.101.
Definition: gsm690.c:360
const struct value_string osmo_amr_type_names[]
Definition: gsm690.c:330
const uint16_t gsm690_7_95_bitorder[]
Definition: gsm690.c:101
int osmo_amr_s_to_d(ubit_t *out, const ubit_t *in, uint16_t n_bits, enum osmo_amr_type amr_mode)
Convert from S-bits (codec output) to d-bits.
Definition: gsm690.c:278
const uint16_t gsm620_unvoiced_bitorder[]
Definition: gsm620.c:33
const uint16_t gsm610_bitorder[]
Definition: gsm610.c:36
const uint16_t gsm690_12_2_bitorder[]
Definition: gsm690.c:41
const uint16_t gsm690_6_7_bitorder[]
Definition: gsm690.c:146
osmo_amr_quality
Definition: codec.h:53
@ AMR_BAD
Definition: codec.h:54
@ AMR_GOOD
Definition: codec.h:55
bool osmo_hr_check_sid(const uint8_t *rtp_payload, size_t payload_len)
Check whether RTP frame contains HR SID code word according to TS 101 318 §5.2.2.
Definition: gsm620.c:273
const uint16_t gsm620_voiced_bitorder[]
Definition: gsm620.c:152
const uint16_t gsm660_bitorder[]
Definition: gsm660.c:34
enum osmo_sub_auth_type type
uint8_t ubit_t
const char * get_value_string(const struct value_string *vs, uint32_t val)