FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/spreproc.h @ 486:f35c8fd9ceba
CHANGES: document gsmrec-dump improvements
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 20 May 2024 02:07:30 +0000 |
parents | 7e0aeab69b10 |
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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 : spreproc.h |
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11 * Purpose : Subframe preprocessing |
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12 * |
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13 ******************************************************************************** |
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14 */ |
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15 #ifndef spreproc_h |
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16 #define spreproc_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 "cnst.h" |
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26 |
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27 /* |
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28 ******************************************************************************** |
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29 * DECLARATION OF PROTOTYPES |
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30 ******************************************************************************** |
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31 */ |
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32 int subframePreProc( |
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33 enum Mode mode, /* i : coder mode */ |
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34 const Word16 gamma1[], /* i : spectral exp. factor 1 */ |
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35 const Word16 gamma1_12k2[],/* i : spectral exp. factor 1 for EFR */ |
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36 const Word16 gamma2[], /* i : spectral exp. factor 2 */ |
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37 Word16 *A, /* i : A(z) unquantized for the 4 subframes */ |
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38 Word16 *Aq, /* i : A(z) quantized for the 4 subframes */ |
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39 Word16 *speech, /* i : speech segment */ |
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40 Word16 *mem_err, /* i : pointer to error signal */ |
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41 Word16 *mem_w0, /* i : memory of weighting filter */ |
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42 Word16 *zero, /* i : pointer to zero vector */ |
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43 Word16 ai_zero[], /* o : history of weighted synth. filter */ |
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44 Word16 exc[], /* o : long term prediction residual */ |
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45 Word16 h1[], /* o : impulse response */ |
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46 Word16 xn[], /* o : target vector for pitch search */ |
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47 Word16 res2[], /* o : long term prediction residual */ |
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48 Word16 error[] /* o : error of LPC synthesis filter */ |
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49 ); |
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50 |
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51 #endif |