FreeCalypso > hg > fc-tourmaline
view src/cs/layer1/include/l1_ctl.h @ 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 | 4e78acac3d88 |
| children |
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/************* Revision Controle System Header ************* * GSM Layer 1 software * L1_CTL.H * * Filename l1_ctl.h * Copyright 2003 (C) Texas Instruments * ************* Revision Controle System Header *************/ /************************************/ /* Automatic timing control (TOA) */ /************************************/ #define C_RED 1 // Factor used to reduce the maximum accumulated values. // Default : 1/2 #define C_GEW 1 // Weighting factor. Default : 1/2 #define C_SNRGR 2560 // 2.5 F6.10 #define C_SNR_THR 8192 // 8 F6.10 #define TOA_HISTO_LEN 11 // Histogram length /* * FreeCalypso Frankenstein: the following definition has been added * from LoCosto version of this file, as it is used by l1_cmplx.c * fairly extensively. * * Disassembly-matching reconstruction has revealed that the constant * in question was originally 210 in the TCS211 version, and then * increased to 220 in the LoCosto source. We currently seek to match * TCS211 without any changes, hence we are setting it back to 210. */ #define IL_FOR_RXLEV_SNR 210 // RX POWER LEVEL /************************************/ /* Automatic Gain Control (AGC) */ /************************************/ #define INDEX_MIN 0 #define INDEX_MAX 240 // 120 /************************************/ /* Automatic frequency compensation */ /************************************/ #define C_thr_snr 2560 // 1/0.4 * 2**10 #define C_thr_P 524288L // 0.5 * 2**20 #define C_cov_start 838861L // 0.8 * 2**20 #define C_a0_kalman 10486L // 0.01 * 2**20 #define C_g_kalman 53687091L// 0.05 * 2**30 #define C_N_del 2 // delay of frequency control loop // due to C W R pipeline #define C_Q 3L // 0.000003 * 2**20 #define C_thr_K 209715L // 0.2 * 2**20 #define C_thr_phi 328 // 0.01 * 2**15 #if (VCXO_ALGO == 1) #define C_WIN_AVG_SIZE_M 64 // average size M #define C_PSI_AVG_SIZE_D 32 // distance size D #define C_MSIZE (C_WIN_AVG_SIZE_M * C_PSI_AVG_SIZE_D) // Data history for predictor #define C_RGAP_BAD_SNR_COUNT_B 32 // bad SNR count B #define ALGO_AFC_RXGAP 1 // reception gap algo #define ALGO_AFC_KALMAN 1 // Kalman filter #define ALGO_AFC_LQG_PREDICTOR 2 // LQG filter + rgap predictor #define ALGO_AFC_KALMAN_PREDICTOR 3 // Kalman filter + rgap predictor #endif #if ((ANLG_FAM == 1) || (ANLG_FAM == 2) || (ANLG_FAM == 3)) // clipping related to AFC DAC linearity range #define C_max_step 32000 // 4000 * 2**3 #define C_min_step -32000 // -4000 * 2**3 #endif