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annotate libtwamr/mac_32.c @ 585:3c6bf0d26ee7 default tip

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TW-TS-005 reader: fix maximum line length bug TW-TS-005 section 4.1 states: The maximum allowed length of each line is 80 characters, not including the OS-specific newline encoding. The implementation of this line length limit in the TW-TS-005 hex file reader function in the present suite was wrong, such that lines of the full maximum length could not be read. Fix it. Note that this bug affects comment lines too, not just actual RTP payloads. Neither Annex A nor Annex B features an RTP payload format that goes to the maximum of 40 bytes, but if a comment line goes to the maximum allowed length of 80 characters not including the terminating newline, the bug will be triggered, necessitating the present fix.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 25 Feb 2025 07:49:28 +0000
parents 61047a2912a2
children
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61047a2912a2 libtwamr: integrate mac_32.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 : mac_32.c
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11 * Purpose : 32 x 32 and 32 x 16 bit DPF multiy & accumulate
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12 * (similar as Mpy_32 and Mpy_32_16 in oper_32b.c)
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13 *
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14 ********************************************************************************
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15 */
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16
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17 /*
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18 ********************************************************************************
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19 * MODULE INCLUDE FILE AND VERSION ID
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20 ********************************************************************************
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21 */
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22 #include "namespace.h"
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23 #include "mac_32.h"
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24
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25 /*
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26 ********************************************************************************
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27 * INCLUDE FILES
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28 ********************************************************************************
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29 */
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30 #include "typedef.h"
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31 #include "basic_op.h"
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32 #include "oper_32b.h"
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33 #include "no_count.h"
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34
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35 /*
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36 ********************************************************************************
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37 * PUBLIC PROGRAM CODE
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38 ********************************************************************************
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39 */
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40
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41 /*****************************************************************************
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42 * Function Mac_32() *
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43 * *
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44 * Multiply two 32 bit integers (DPF) and accumulate with (normal) 32 bit *
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45 * integer. The multiplication result is divided by 2**31 *
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46 * *
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47 * L_32 = L_32 + (hi1*hi2)<<1 + ( (hi1*lo2)>>15 + (lo1*hi2)>>15 )<<1 *
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48 * *
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49 * This operation can also be viewed as the multiplication of two Q31 *
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50 * number and the result is also in Q31. *
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51 * *
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52 * Arguments: *
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53 * *
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54 * hi1 hi part of first number *
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55 * lo1 lo part of first number *
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56 * hi2 hi part of second number *
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57 * lo2 lo part of second number *
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58 * *
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59 *****************************************************************************
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60 */
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61
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62 Word32 Mac_32 (Word32 L_32, Word16 hi1, Word16 lo1, Word16 hi2, Word16 lo2)
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63 {
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64 L_32 = L_mac (L_32, hi1, hi2);
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65 L_32 = L_mac (L_32, mult (hi1, lo2), 1);
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66 L_32 = L_mac (L_32, mult (lo1, hi2), 1);
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67
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68 return (L_32);
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69 }
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70
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71 /*****************************************************************************
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72 * Function Mac_32_16() *
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73 * *
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74 * Multiply a 16 bit integer by a 32 bit (DPF) and accumulate with (normal)*
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75 * 32 bit integer. The multiplication result is divided by 2**15 *
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76 * *
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77 * *
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78 * L_32 = L_32 + (hi1*lo2)<<1 + ((lo1*lo2)>>15)<<1 *
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79 * *
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80 * Arguments: *
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81 * *
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82 * hi hi part of 32 bit number. *
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83 * lo lo part of 32 bit number. *
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84 * n 16 bit number. *
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85 * *
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86 *****************************************************************************
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87 */
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88
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89 Word32 Mac_32_16 (Word32 L_32, Word16 hi, Word16 lo, Word16 n)
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90 {
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91 L_32 = L_mac (L_32, hi, n);
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92 L_32 = L_mac (L_32, mult (lo, n), 1);
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93
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94 return (L_32);
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95 }