Review at https://gerrit.osmocom.org/2829
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 --- M include/osmocom/gsm/protocol/gsm_08_08.h 1 file changed, 20 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/29/2829/1 diff --git a/include/osmocom/gsm/protocol/gsm_08_08.h b/include/osmocom/gsm/protocol/gsm_08_08.h index e93b8bc..f7cd1cb 100644 --- a/include/osmocom/gsm/protocol/gsm_08_08.h +++ b/include/osmocom/gsm/protocol/gsm_08_08.h @@ -449,6 +449,26 @@ uint16_t cfg; }; +/* 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). */ +enum gsm0808_speech_codec_defaults { + /* 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 */ + GSM0808_SC_CFG_DEFAULT_FR_AMR = 0xffff, + GSM0808_SC_CFG_DEFAULT_HR_AMR = 0x073f, + GSM0808_SC_CFG_DEFAULT_OHR_AMR = 0xffff, + + /* 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 */ + 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 { -- To view, visit https://gerrit.osmocom.org/2829 To unsubscribe, visit https://gerrit.osmocom.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I9dc0165d76a022b2c1b7418bc3133407e61b7261 Gerrit-PatchSet: 1 Gerrit-Project: libosmocore Gerrit-Branch: master Gerrit-Owner: dexter <pma...@sysmocom.de>