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annotate src/cs/layer1/gtt_include/ctm/tonemod.h @ 660:293c7db5f10f

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bmi3: fixed the mysterious "mute on first call" bug When UI-enabled fw boots on a previously blank (no /mmi/* files) FFS for the first time, the output_volume member of the persistent UI settings structure was left uninitialized, corresponding to the earpiece volume being set to mute, which is an invalid setting. Because of other quirks in the far-from-finished UI code, this volume setting takes effect only when the first call is answered, producing the odd behaviour seen at the user level. The current fix is to set the blank-FFS default for output_volume to volume level 4, which is the same -6 dB Iota volume as the ACI default.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 14 May 2020 02:50:41 +0000
parents 945cf7f506b2
children
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1 /*
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2 *******************************************************************************
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3 *
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4 * COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH
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5 * 90411 NUERNBERG, GERMANY, Tel Int + 49 911 5217 100
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6 *
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7 * The program(s) may be used and/or copied only with the
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8 * written permission from Ericsson or in accordance
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9 * with the terms and conditions stipulated in the agreement or
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10 * contract under which the program(s) have been supplied.
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11 *
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12 * Changes since October 13, 2000:
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13 * - The type mod_state_t includes a new member txbits_fifo_state now.
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14 *
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15 *******************************************************************************
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16 *
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17 * File : tonemod.h
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18 * Purpose : header file for tonemod.c
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19 *
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20 *******************************************************************************
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21 */
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22
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23 #ifndef tonemod_h
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24 #define tonemod_h "$Id: $"
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25
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26 /*
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27 *******************************************************************************
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28 * INCLUDE FILES
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29 *******************************************************************************
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30 */
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31
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32 #include <fifo.h>
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33
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34 /*
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35 *******************************************************************************
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36 * DECLARATION OF PROTOTYPES
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37 *******************************************************************************
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38 */
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39
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40
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41 /* Define a type for the state variable of the function tonemod() */
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42
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43 typedef struct {
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44 WORD16 cntModulatedSamples;
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45 WORD16 actualBits[2];
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46 fifo_state_t txbits_fifo_state;
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47 } mod_state_t;
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48
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49
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50 /* ---------------------------------------------------------------------- */
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51 /* Function init_tonemod() */
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52 /* *********************** */
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53 /* This function has to be executed before tonemod() can be used. */
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54 /* ---------------------------------------------------------------------- */
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55
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56 void init_tonemod(mod_state_t *mod_state);
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57
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58
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59 /* ---------------------------------------------------------------------- */
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60 /* Function tonemod() */
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61 /* ****************** */
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62 /* Modulator of the Cellular Text Telephone Modem. */
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63 /* The input vector bits_in must contain the bits that have to be */
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64 /* transmitted. The length of bits_in must be even because always two */
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65 /* bits are coded in parallel. */
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66 /* Bits are either unipolar (i.e. {0, 1}) or bipolar (i.e. {-1, +1)}. */
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67 /* The length of the output vector tones_out must be 20 times longer than */
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68 /* the length of bits_in, since each pair of two bits is coded within a */
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69 /* frame of 40 audio samples. */
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70 /* ---------------------------------------------------------------------- */
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71
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72 void tonemod(WORD16 *tones_out,
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73 WORD16 *bits_in,
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74 WORD16 num_samples_tones_out,
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75 WORD16 num_bits_in,
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76 mod_state_t *mod_state);
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77
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78 #endif