view cdg-hybrid/sap/mac.pdf @ 275:79cfefc1e2b4

audio mode load: gracefully handle mode files of wrong AEC version Unfortunately our change of enabling L1_NEW_AEC (which is necessary in order to bring our Calypso ARM fw into match with the underlying DSP reality) brings along a change in the audio mode file binary format and file size - all those new tunable AEC parameters do need to be stored somewhere, after all. But we already have existing mode files in the old format, and setting AEC config to garbage when loading old audio modes (which is what would happen without the present change) is not an appealing proposition. The solution implemented in the present change is as follows: the audio mode loading code checks the file size, and if it differs from the active version of T_AUDIO_MODE, the T_AUDIO_AEC_CFG structure is cleared - set to the default (disabled AEC) for the compiled type of AEC. We got lucky in that this varying T_AUDIO_AEC_CFG structure sits at the end of T_AUDIO_MODE!
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 30 Jul 2021 02:55:48 +0000
parents 35f7a1dc9f7d
children
line wrap: on
line source

;********************************************************************************
;*** File           : mac.pdf
;*** Creation       : Wed Mar 11 09:58:17 CST 2009
;*** XSLT Processor : Apache Software Foundation / http://xml.apache.org/xalan-j / supports XSLT-Ver: 1
;*** Copyright      : (c) Texas Instruments AG, Berlin Germany 2002
;********************************************************************************
;*** Document Type  : Service Access Point Specification
;*** Document Name  : mac
;*** Document No.   : 8441.111.03.009
;*** Document Date  : 2003-02-26
;*** Document Status: BEING_PROCESSED
;*** Document Author: SAB
;********************************************************************************



PRAGMA 	SRC_FILE_TIME 	"Thu Nov 29 09:45:32 2007"
PRAGMA 	LAST_MODIFIED 	"2003-02-26"
PRAGMA 	ID_AND_VERSION 	"8441.111.03.009"



CONST 	MAC_MAX_TIMESLOTS 	8 	; defines the maximum number of uplink data blocks
CONST 	MAC_BURST_PER_BLOCK 	4 	; number of bursts that compose a block
CONST 	MAC_MAX_DL_DATA_BLCKS 	4 	; maximum number of dowlink data blocks



VALTAB 	VAL_bcch_level
VAL 	0 	MAC_RXLEV_MIN 	"minimum receive signal level as defined in GSM 05.08"
VAL 	63 	MAC_RXLEV_MAX 	"maximum receive signal level as defined in GSM 05.08"
VAL 	0x80 	MAC_RXLEV_NONE 	"no valid receive signal level present"

VALTAB 	VAL_crc_error
VAL 	0 	GRLC_CRC_PASS 	"radio block is correctly received"
VAL 	1 	GRLC_CRC_FAIL 	"radio block is not correctly received"




VAR 	nts 	"Maximum number of Timeslots for uplink TBF" 	B


VAR 	fn 	"Framenumber" 	L


VAR 	rlc_blocks_sent 	"number of transmitted rlc/mac blocks (except polling)" 	B


VAR 	rx_no 	"Number of received Timeslots" 	S


VAR 	block_status 	"Block Status" 	S


VAR 	tn 	"Timeslot number" 	S


VAR 	ul_block 	"Uplink block" 	S


VAR 	dl_block 	"Downlink block" 	S


VAR 	last_poll_resp 	"Last Poll Response" 	B


VAR 	ta_value 	"Timing Advance Value" 	B


VAR 	d_macc 	"Accumulated Metric" 	S


VAR 	d_nerr 	"Number of estimated erorrs" 	S


VAR 	burst_level 	"Signal level of the first valid downlink PDCH; ." 	B


VAR 	radio_freq 	"Radio frequency of the TDMA frame; ." 	S


VAR 	bcch_level 	"Signal level of BCCH serving Cell; ." 	B

VAL 	@p_mac - VAL_bcch_level@ 	

VAR 	crc_error 	"CRC error; ." 	B

VAL 	@p_mac - VAL_crc_error@ 	

VAR 	assignment_id 	"assignment identifier; ." 	L





COMP 	ul_poll_resp 	 "Uplink Poll Response"
{
 	block_status 	 ; Block Status
 	tn 	 ; Timeslot number
 	ul_block 	[13] 	 ; Uplink block
}



COMP 	ul_data 	 "Uplink Data"
{
 	block_status 	 ; Block Status
 	ul_block 	[28] 	 ; Uplink block
}



COMP 	dl_data 	 "Downlink Data"
{
 	block_status 	 ; Block Status
 	tn 	 ; Timeslot number
 	d_macc 	 ; Accumulated Metric
 	d_nerr 	 ; Number of estimated erorrs
 	dl_block 	[27] 	 ; Downlink block
}






; MAC_DATA_REQ 	0x3200
; MAC_DATA_IND 	0x7200
; MAC_READY_IND 	0x7201
; MAC_POLL_REQ 	0x3201
; MAC_PWR_CTRL_IND 	0x7202



PRIM 	MAC_DATA_REQ 	0x3200
{
 	ul_data 	 ; Uplink Data
}






PRIM 	MAC_DATA_IND 	0x7200
{
 	fn 	 ; Framenumber
 	rx_no 	 ; Number of received Timeslots
 	dl_data 	 ; Downlink Data
}






PRIM 	MAC_READY_IND 	0x7201
{
 	nts 	 ; Maximum number of Timeslots for uplink TBF
 	fn 	 ; Framenumber
 	rlc_blocks_sent 	 ; number of transmitted rlc/mac blocks (except polling)
 	last_poll_resp 	 ; Last Poll Response
 	ta_value 	 ; Timing Advance Value
}






PRIM 	MAC_POLL_REQ 	0x3201
{
 	ul_poll_resp 	 ; Uplink Poll Response
}






PRIM 	MAC_PWR_CTRL_IND 	0x7202
{
 	assignment_id 	 ; Assignment identifier
 	crc_error 	 ; CRC error
 	bcch_level 	 ; Signal level of BCCH serving Cell
 	radio_freq 	[MAC_BURST_PER_BLOCK] 	 ; Radio frequency of the TDMA frame
 	burst_level 	[MAC_BURST_PER_BLOCK] 	 ; Signal level of the first valid downlink PDCH
}