[PATCH] libosmocore[master]: gsm_08_08: correct speech codec defaults

This is merely a historical archive of years 2008-2021, before the migration to mailman3.

A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/gerrit-log@lists.osmocom.org/.

dexter gerrit-no-reply at lists.osmocom.org
Thu Mar 22 16:39:50 UTC 2018


Review at  https://gerrit.osmocom.org/7458

gsm_08_08: correct speech codec defaults

The speech codec defaults are not correct. The defaults recommended
in 3GPP TS 28.062, Table 7.11.3.1.3-2 are limited by 3GPP TS 48.008,
Section 3.2.2.103. Some defaults are actually reserved for future
use. Also the endianess of the 16 bit values is reversed.

- correct values so that they match the specification
- revert endianess for a correct transmission

Change-Id: I6c3a34d39a375d71c4128fd38f06629e8b98b100
---
M include/osmocom/gsm/protocol/gsm_08_08.h
1 file changed, 5 insertions(+), 5 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/58/7458/1

diff --git a/include/osmocom/gsm/protocol/gsm_08_08.h b/include/osmocom/gsm/protocol/gsm_08_08.h
index 947f90f..8276477 100644
--- a/include/osmocom/gsm/protocol/gsm_08_08.h
+++ b/include/osmocom/gsm/protocol/gsm_08_08.h
@@ -460,16 +460,16 @@
  *  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
+ *  See also: 3GPP TS 28.062, Table 7.11.3.1.3-2: Preferred Configurations for
+ *  the Adaptive Multi-Rate Codec Types and 3GPP TS 48.008, Section 3.2.2.103.
  *
  *  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		= 0xff57,
+	GSM0808_SC_CFG_DEFAULT_HR_AMR		= 0x3f07,
+	GSM0808_SC_CFG_DEFAULT_OHR_AMR		= 0xff57,
 	GSM0808_SC_CFG_DEFAULT_FR_AMR_WB	= 0x01,
 	GSM0808_SC_CFG_DEFAULT_OFR_AMR_WB	= 0x3f,
 	GSM0808_SC_CFG_DEFAULT_OHR_AMR_WB	= 0x01,

-- 
To view, visit https://gerrit.osmocom.org/7458
To unsubscribe, visit https://gerrit.osmocom.org/settings

Gerrit-MessageType: newchange
Gerrit-Change-Id: I6c3a34d39a375d71c4128fd38f06629e8b98b100
Gerrit-PatchSet: 1
Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-Owner: dexter <pmaier at sysmocom.de>



More information about the gerrit-log mailing list