FreeCalypso > hg > fc-tourmaline
view src/gpf/ccd/gsm5_tlv.c @ 300:edcb8364d45b
L1: resurrect TCH tap feature
In this new incarnation of our TCH tap feature, we support DL sniffing
in all 3 of FR1, HR1 and EFR, and the new implementation will capture
every 20 ms frame where the old one silently skipped a frame (sent
nothing) during FACCH stealing. The wire interface on RVTMUX changed
slightly, and fc-shell tch record will need to be updated to support
the new version.
TCH UL play or substitution is supported for FR1 and EFR only;
support for HR1 can be added later if needed.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Tue, 13 Dec 2022 02:44:01 +0000 |
parents | 4e78acac3d88 |
children |
line wrap: on
line source
/* +----------------------------------------------------------------------------- | Project : | Modul : gsm5_tlv.c +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : Definition of encoding and decoding functions for GSM5_TLV elements +----------------------------------------------------------------------------- */ /* * standard definitions like GLOBAL, UCHAR, ERROR etc. */ #include "typedefs.h" #include "header.h" /* * Prototypes of ccd (USE_DRIVER EQ undef) for prototypes only * look at ccdapi.h */ #undef USE_DRIVER #include "ccdapi.h" /* * Types and functions for bit access and manipulation */ #include "ccd_globs.h" #include "bitfun.h" /* * Prototypes of ccd internal functions */ #include "ccd.h" /* * Declaration of coder/decoder tables */ #include "ccdtable.h" #include "ccddata.h" #ifndef RUN_INT_RAM /* +--------------------------------------------------------------------+ | PROJECT : CCD (6144) MODULE : CDC_GSM | | STATE : code ROUTINE : cdc_gsm5tlv_decode | +--------------------------------------------------------------------+ PURPOSE : Decoding of the GSM Type 5TLV element. This element consists of a 8 bit T component a 8 or 16 Bit L component and a V component wich length depends on the value of the L component. If the length is in the range 0x00-0x7f the L component consist of one byte. For bigger length 0x80-0xff the L component consists of two bytes. The first byte is tied to 0x81 and the second byte contains a value in the range 0x80 to 0xff. */ SHORT cdc_gsm5tlv_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) { T_TLV_SORT tlv_inf; tlv_inf.gotTag = TRUE; tlv_inf.gotLen = TRUE; #ifdef DEBUG_CCD #ifndef CCD_SYMBOLS TRACE_CCD (globs, "cdc_gsm5tlv_decode()"); #else TRACE_CCD (globs, "cdc_gsm5tlv_decode() %s", ccddata_get_alias((USHORT) e_ref, 1)); #endif #endif return cdc_tlv_decode (c_ref, e_ref, &tlv_inf, globs); } #endif /* !RUN_INT_RAM */ #ifndef RUN_INT_RAM /* +--------------------------------------------------------------------+ | PROJECT : CCD (6144) MODULE : CDC_GSM | | STATE : code ROUTINE : cdc_gsm5tlv_encode | +--------------------------------------------------------------------+ PURPOSE : Encoding of the GSM Type 5TLV element. This element consists of a 8 bit T component a 8 or 16 Bit L component and a V component wich length depends on the value of the L component. If the length is in the range 0x00-0x7f the L component consist of one byte. For bigger length 0x80-0xff the L component consists of two bytes. The first byte is tied to 0x81 and the second byte contains a value in the range 0x80 to 0xff. */ SHORT cdc_gsm5tlv_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) { #ifdef DEBUG_CCD #ifndef CCD_SYMBOLS TRACE_CCD (globs, "cdc_gsm5tlv_encode()"); #else TRACE_CCD (globs, "cdc_gsm5tlv_encode() %s", ccddata_get_alias((USHORT) e_ref, 1)); #endif #endif cdc_tlv_encode (e_ref, 8, 8, globs); return 1; } #endif /* !RUN_INT_RAM */