FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/pre_proc.h @ 422:1ceda5586d01
implement twamr-tseq-enc test program
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 07 May 2024 06:27:20 +0000 |
parents | 9b699f30e6f3 |
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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 : pre_proc.h |
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11 * Purpose : Preprocessing of input speech. |
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12 * |
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13 ******************************************************************************** |
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14 */ |
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15 #ifndef pre_proc_h |
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16 #define pre_proc_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 "typedef.h" |
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24 |
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25 /* |
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26 ******************************************************************************** |
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27 * LOCAL VARIABLES AND TABLES |
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28 ******************************************************************************** |
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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 * DEFINITION OF DATA TYPES |
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34 ******************************************************************************** |
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35 */ |
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36 typedef struct { |
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37 Word16 y2_hi; |
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38 Word16 y2_lo; |
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39 Word16 y1_hi; |
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40 Word16 y1_lo; |
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41 Word16 x0; |
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42 Word16 x1; |
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43 } Pre_ProcessState; |
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44 |
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45 /* |
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46 ******************************************************************************** |
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47 * DECLARATION OF PROTOTYPES |
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48 ******************************************************************************** |
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49 */ |
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50 |
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51 void Pre_Process_reset (Pre_ProcessState *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 Pre_Process ( |
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57 Pre_ProcessState *st, |
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58 Word16 signal[], /* Input/output signal */ |
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59 Word16 lg /* Lenght of signal */ |
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60 ); |
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61 |
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62 #endif |