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annotate libtwamr/gain_q.h @ 483:4f13db3a7086

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doc/Utils-overview: document new utilities
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 20 May 2024 01:26:12 +0000
parents ccba5812fa44
children
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ccba5812fa44 libtwamr: integrate gain_q.c
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1 /*
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2 ********************************************************************************
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3 *
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4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
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5 * R99 Version 3.3.0
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6 * REL-4 Version 4.1.0
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7 *
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8 ********************************************************************************
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9 *
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10 * File : gainQuant.h
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11 * Purpose : Quantazation of gains
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12 *
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13 ********************************************************************************
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14 */
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15 #ifndef gain_q_h
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16 #define gain_q_h "$Id $"
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17
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18 /*
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19 ********************************************************************************
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20 * INCLUDE FILES
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21 ********************************************************************************
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22 */
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23 #include "tw_amr.h"
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24 #include "typedef.h"
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25 #include "gc_pred.h"
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26 #include "g_adapt.h"
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27
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28 /*
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29 ********************************************************************************
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30 * DEFINITION OF DATA TYPES
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31 ********************************************************************************
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32 */
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33 typedef struct {
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34 Word16 sf0_exp_gcode0;
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35 Word16 sf0_frac_gcode0;
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36 Word16 sf0_exp_target_en;
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37 Word16 sf0_frac_target_en;
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38 Word16 sf0_exp_coeff[5];
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39 Word16 sf0_frac_coeff[5];
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40 Word16 *gain_idx_ptr;
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41 gc_predState gc_predSt;
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42 gc_predState gc_predUnqSt;
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43 GainAdaptState adaptSt;
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44 } gainQuantState;
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45
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46 /*
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47 ********************************************************************************
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48 * DECLARATION OF PROTOTYPES
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49 ********************************************************************************
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50 */
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51 void gainQuant_reset (gainQuantState *st);
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52 /* reset of pre processing state (i.e. set state memory to zero)
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53 returns 0 on success
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54 */
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55
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56 int gainQuant(
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57 gainQuantState *st, /* i/o : State struct */
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58 enum Mode mode, /* i : coder mode */
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59 Word16 res[], /* i : LP residual, Q0 */
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60 Word16 exc[], /* i : LTP excitation (unfiltered), Q0 */
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61 Word16 code[], /* i : CB innovation (unfiltered), Q13 */
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62 /* (unsharpened for MR475) */
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63 Word16 xn[], /* i : Target vector. */
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64 Word16 xn2[], /* i : Target vector. */
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65 Word16 y1[], /* i : Adaptive codebook. */
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66 Word16 Y2[], /* i : Filtered innovative vector. */
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67 Word16 g_coeff[], /* i : Correlations <xn y1> <y1 y1> */
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68 /* Compute in G_pitch(). */
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69 Word16 even_subframe, /* i : even subframe indicator flag */
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70 Word16 gp_limit, /* i : pitch gain limit */
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71 Word16 *sf0_gain_pit, /* o : Pitch gain sf 0. MR475 */
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72 Word16 *sf0_gain_cod, /* o : Code gain sf 0. MR475 */
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73 Word16 *gain_pit, /* i/o : Pitch gain. */
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74 Word16 *gain_cod, /* o : Code gain. */
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75 /* MR475: gain_* unquantized in even */
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76 /* subframes, quantized otherwise */
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77 Word16 **anap /* o : Index of quantization */
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78 );
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79
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80 #endif