FreeCalypso > hg > fc-tourmaline
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 |
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;******************************************************************************** ;*** 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 }