FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/qua_gain.h @ 427:357d1faad55d
libtwamr: implement decoder top level
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 07 May 2024 21:45:47 +0000 |
parents | b02e043dcba0 |
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libtwamr: integrate qua_gain.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 : qua_gain.h |
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11 * Purpose : Quantization of pitch and codebook gains. |
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12 * |
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13 ******************************************************************************** |
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14 */ |
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15 #ifndef qua_gain_h |
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16 #define qua_gain_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 |
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26 /* |
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27 ******************************************************************************** |
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28 * DECLARATION OF PROTOTYPES |
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29 ******************************************************************************** |
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30 */ |
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31 /************************************************************************* |
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32 * |
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33 * FUNCTION: Qua_gain() |
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34 * |
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35 * PURPOSE: Quantization of pitch and codebook gains. |
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36 * (using predicted codebook gain) |
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37 * |
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38 *************************************************************************/ |
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39 Word16 |
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40 Qua_gain( /* o : index of quantization. */ |
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41 enum Mode mode, /* i : AMR mode */ |
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42 Word16 exp_gcode0, /* i : predicted CB gain (exponent), Q0 */ |
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43 Word16 frac_gcode0, /* i : predicted CB gain (fraction), Q15 */ |
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44 Word16 frac_coeff[], /* i : energy coeff. (5), fraction part, Q15 */ |
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45 Word16 exp_coeff[], /* i : energy coeff. (5), exponent part, Q0 */ |
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46 /* (frac_coeff and exp_coeff computed in */ |
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47 /* calc_filt_energies()) */ |
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48 Word16 gp_limit, /* i : pitch gain limit */ |
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49 Word16 *gain_pit, /* o : Pitch gain, Q14 */ |
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50 Word16 *gain_cod, /* o : Code gain, Q1 */ |
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51 Word16 *qua_ener_MR122, /* o : quantized energy error, Q10 */ |
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52 /* (for MR122 MA predictor update) */ |
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53 Word16 *qua_ener /* o : quantized energy error, Q10 */ |
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54 /* (for other MA predictor update) */ |
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55 ); |
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56 #endif |