mirror of https://gerrit.osmocom.org/libosmocore
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
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@ -449,6 +449,27 @@ struct gsm0808_speech_codec {
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uint16_t cfg;
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uint16_t cfg;
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};
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};
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/*! \brief Default speech codec configurations: Some codecs specified with
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* struct gsm0808_speech_codec, require a configuration (cfg). The following
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* default configuration will configure the codec (RTP) to match the
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* configuration that is used on the air interface (Um).
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*
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* Default values for FR_AMR, HR_AMR and OHR_AMR:
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* See also: 3GPP TS 28.062, Table 7.11.3.1.3-2: Preferred
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* Configurations for the Adaptive Multi-Rate Codec Types
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*
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* Default values for FR_AMR_WB, OFR_AMR_WB and OHR_AMR_WB:
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* See also: 3GPP TS 26.103, Table 5.7-1: Allowed Configurations
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* for the Adaptive Multi-Rate - Wideband Codec Types */
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enum gsm0808_speech_codec_defaults {
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GSM0808_SC_CFG_DEFAULT_FR_AMR = 0xffff,
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GSM0808_SC_CFG_DEFAULT_HR_AMR = 0x073f,
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GSM0808_SC_CFG_DEFAULT_OHR_AMR = 0xffff,
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GSM0808_SC_CFG_DEFAULT_FR_AMR_WB = 0x01,
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GSM0808_SC_CFG_DEFAULT_OFR_AMR_WB = 0x3f,
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GSM0808_SC_CFG_DEFAULT_OHR_AMR_WB = 0x01,
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};
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/* 3GPP TS 48.008 3.2.2.103 Speech Codec List */
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/* 3GPP TS 48.008 3.2.2.103 Speech Codec List */
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#define SPEECH_CODEC_MAXLEN 255
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#define SPEECH_CODEC_MAXLEN 255
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struct gsm0808_speech_codec_list {
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struct gsm0808_speech_codec_list {
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