FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/c8_31pf.h @ 472:d80ccb3c3970
gsmefr-dlcap-sync: use DHF datum in the library
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 14 May 2024 07:30:48 +0000 |
parents | dfd5f159574b |
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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 : c8_31pf.h |
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11 * Purpose : Searches a 31 bit algebraic codebook containing |
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12 * : 8 pulses in a frame of 40 samples. |
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13 * |
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14 ******************************************************************************** |
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15 */ |
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16 #ifndef c8_31pf_h |
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17 #define c8_31pf_h "$Id $" |
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18 |
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19 /* |
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20 ******************************************************************************** |
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21 * INCLUDE FILES |
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22 ******************************************************************************** |
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23 */ |
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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 * DEFINITION OF DATA TYPES |
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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 ******************************************************************************** |
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34 * DECLARATION OF PROTOTYPES |
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35 ******************************************************************************** |
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36 */ |
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37 void code_8i40_31bits ( |
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38 Word16 x[], /* i : target vector */ |
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39 Word16 cn[], /* i : residual after long term prediction */ |
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40 Word16 h[], /* i : impulse response of weighted synthesis |
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41 filter */ |
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42 Word16 cod[], /* o : algebraic (fixed) codebook excitation */ |
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43 Word16 y[], /* o : filtered fixed codebook excitation */ |
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44 Word16 indx[] /* o : 7 Word16, index of 8 pulses (signs+positions) */ |
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45 ); |
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46 |
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47 #endif |