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| author | Philipp Maier <pmaier@sysmocom.de> | 2017-06-02 11:25:28 +0200 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2017-06-22 17:08:15 +0000 |
| commit | a9b92769482585b17467008fa0d78085d7b10820 (patch) | |
| tree | 3352b7beb463c86d3af2b5751da2896db868e4a6 | |
| parent | bb8396690ec36a912c2134087be8ec61166e4ad2 (diff) | |
gsm0808: add default speech codec configuration
In an AoIP scenario, the speech codec list field specifies the
codecs used in the RTP interface. This patch adds a table
with default codec configurations that match the codec
configurations that are also used on the air interface.
Change-Id: I9dc0165d76a022b2c1b7418bc3133407e61b7261
| -rw-r--r-- | include/osmocom/gsm/protocol/gsm_08_08.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/osmocom/gsm/protocol/gsm_08_08.h b/include/osmocom/gsm/protocol/gsm_08_08.h index 9e00d23f..d1653309 100644 --- a/include/osmocom/gsm/protocol/gsm_08_08.h +++ b/include/osmocom/gsm/protocol/gsm_08_08.h @@ -449,6 +449,27 @@ struct gsm0808_speech_codec { uint16_t cfg; }; +/*! \brief Default speech codec configurations: Some codecs specified with + * struct gsm0808_speech_codec, require a configuration (cfg). The following + * default configuration will configure the codec (RTP) to match the + * configuration that is used on the air interface (Um). + * + * Default values for FR_AMR, HR_AMR and OHR_AMR: + * See also: 3GPP TS 28.062, Table 7.11.3.1.3-2: Preferred + * Configurations for the Adaptive Multi-Rate Codec Types + * + * Default values for FR_AMR_WB, OFR_AMR_WB and OHR_AMR_WB: + * See also: 3GPP TS 26.103, Table 5.7-1: Allowed Configurations + * for the Adaptive Multi-Rate - Wideband Codec Types */ +enum gsm0808_speech_codec_defaults { + GSM0808_SC_CFG_DEFAULT_FR_AMR = 0xffff, + GSM0808_SC_CFG_DEFAULT_HR_AMR = 0x073f, + GSM0808_SC_CFG_DEFAULT_OHR_AMR = 0xffff, + GSM0808_SC_CFG_DEFAULT_FR_AMR_WB = 0x01, + GSM0808_SC_CFG_DEFAULT_OFR_AMR_WB = 0x3f, + GSM0808_SC_CFG_DEFAULT_OHR_AMR_WB = 0x01, +}; + /* 3GPP TS 48.008 3.2.2.103 Speech Codec List */ #define SPEECH_CODEC_MAXLEN 255 struct gsm0808_speech_codec_list { |