#include <stdint.h>
#include <stdbool.h>
#include <osmocom/core/utils.h>
Go to the source code of this file.
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enum | osmo_amr_type {
AMR_4_75 = 0,
AMR_5_15 = 1,
AMR_5_90 = 2,
AMR_6_70 = 3,
AMR_7_40 = 4,
AMR_7_95 = 5,
AMR_10_2 = 6,
AMR_12_2 = 7,
AMR_SID = 8,
AMR_GSM_EFR_SID = 9,
AMR_TDMA_EFR_SID = 10,
AMR_PDC_EFR_SID = 11,
AMR_NO_DATA = 15
} |
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enum | osmo_amr_quality {
AMR_BAD = 0,
AMR_GOOD = 1
} |
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static bool | osmo_amr_is_speech (enum osmo_amr_type ft) |
| Check if given AMR Frame Type is a speech frame. More...
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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. More...
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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. More...
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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) More...
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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. More...
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Enumerator |
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AMR_BAD |
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AMR_GOOD |
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Enumerator |
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AMR_4_75 |
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AMR_5_15 |
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AMR_5_90 |
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AMR_6_70 |
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AMR_7_40 |
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AMR_7_95 |
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AMR_10_2 |
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AMR_12_2 |
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AMR_SID |
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AMR_GSM_EFR_SID |
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AMR_TDMA_EFR_SID |
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AMR_PDC_EFR_SID |
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AMR_NO_DATA |
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int osmo_amr_rtp_dec |
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const uint8_t * |
rtppayload, |
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int |
payload_len, |
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uint8_t * |
cmr, |
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int8_t * |
cmi, |
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enum osmo_amr_type * |
ft, |
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enum osmo_amr_quality * |
bfi, |
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int8_t * |
sti |
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) |
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Decode various AMR parameters from RTP payload (RFC 4867) acording to 3GPP TS 26.101.
- Parameters
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[in] | rtppayload | Payload from RTP packet |
[in] | payload_len | length of rtppayload |
[out] | cmr | AMR Codec Mode Request, not filled if NULL |
[out] | cmi | AMR Codec Mode Indicator, -1 if not applicable for this type, not filled if NULL |
[out] | ft | AMR Frame Type, not filled if NULL |
[out] | bfi | AMR Bad Frame Indicator, not filled if NULL |
[out] | sti | AMR SID Type Indicator, -1 if not applicable for this type, not filled if NULL |
- Returns
- length of AMR data or negative value on error
References amr_len_by_ft, AMR_SID, ENOTSUP, and type.
Encode various AMR parameters from RTP payload (RFC 4867)
- Parameters
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[out] | payload | Payload for RTP packet, contains speech data (if any) except for have 2 first bytes where header will be built |
[in] | cmr | AMR codec Mode Request |
[in] | ft | AMR Frame Type |
[in] | bfi | AMR Bad Frame Indicator |
- Returns
- length of AMR data (header + ToC + speech data) or negative value on error
Note: only octet-aligned mode is supported so the header occupies 2 full bytes. Optional interleaving header is not supported.
References amr_len_by_ft, and ENOTSUP.
bool osmo_fr_check_sid |
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const uint8_t * |
rtp_payload, |
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size_t |
payload_len |
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) |
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bool osmo_hr_check_sid |
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const uint8_t * |
rtp_payload, |
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size_t |
payload_len |
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) |
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const uint16_t gsm610_bitorder[] |
const uint16_t gsm620_unvoiced_bitorder[] |
const uint16_t gsm620_voiced_bitorder[] |
const uint16_t gsm660_bitorder[] |
const uint16_t gsm690_10_2_bitorder[] |
const uint16_t gsm690_12_2_bitorder[] |
const uint16_t gsm690_4_75_bitorder[] |
const uint16_t gsm690_5_15_bitorder[] |
const uint16_t gsm690_5_9_bitorder[] |
const uint16_t gsm690_6_7_bitorder[] |
const uint16_t gsm690_7_4_bitorder[] |
const uint16_t gsm690_7_95_bitorder[] |