FreeCalypso > hg > fc-tourmaline

annotate src/cs/layer1/gtt_include/ctm/tonemod.h @ 75:8697f358f505

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backlight rework: Condat light driver accepts levels The present change is another intermediate step on the path toward new FreeCalypso backlight handling. At this intermediate step the Condat light driver accepts 0-255 backlight levels driven by MFW, and puts them out on PWL on Luna development boards. At the same time on C139 it is now possible to turn on the display backlight with or without the keypad bl - the lsb of the 0-255 backlight level controls the keypad bl. MFW presently drives only 0 and 255 backlight levels, thus there is no visible behavioral change yet - but the plan for subsequent stages of this backlight rework is to add a dimmed backlight state (no keypad bl on C139) during active calls.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 24 Oct 2020 20:44:04 +0000
parents 4e78acac3d88
children
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4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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1 /*
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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2 *******************************************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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3 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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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
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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6 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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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
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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9 * with the terms and conditions stipulated in the agreement or
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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10 * contract under which the program(s) have been supplied.
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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11 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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12 * Changes since October 13, 2000:
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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13 * - The type mod_state_t includes a new member txbits_fifo_state now.
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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14 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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15 *******************************************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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16 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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17 * File : tonemod.h
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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18 * Purpose : header file for tonemod.c
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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19 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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20 *******************************************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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21 */
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22
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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23 #ifndef tonemod_h
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24 #define tonemod_h "$Id: $"
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25
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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26 /*
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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27 *******************************************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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28 * INCLUDE FILES
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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29 *******************************************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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30 */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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31
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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32 #include <fifo.h>
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33
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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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 */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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39
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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40
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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41 /* Define a type for the state variable of the function tonemod() */
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42
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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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
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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49
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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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
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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58
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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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
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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78 #endif