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annotate libtwamr/inv_sqrt.tab @ 477:4c9222d95647

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libtwamr encoder: always emit frame->mode = mode; In the original implementation of amr_encode_frame(), the 'mode' member of the output struct was set to 0xFF if the output frame type is TX_NO_DATA. This design was made to mimic the mode field (16-bit word) being set to 0xFFFF (or -1) in 3GPP test sequence format - but nothing actually depends on this struct member being set in any way, and amr_frame_to_tseq() generates the needed 0xFFFF on its own, based on frame->type being equal to TX_NO_DATA. It is simpler and more efficient to always set frame->mode to the actual encoding mode in amr_encode_frame(), and this new behavior has already been documented in doc/AMR-library-API description in anticipation of the present change.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 18 May 2024 22:30:42 +0000
parents 54f6bc41ed10
children
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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 : inv_sqrt.tab
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11 * Purpose : Table for routine Inv_sqrt()
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12 * $Id $
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13 *
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14 ********************************************************************************
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15 */
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16 static const Word16 table[49] =
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17 {
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18
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19 32767, 31790, 30894, 30070, 29309, 28602, 27945, 27330, 26755, 26214,
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20 25705, 25225, 24770, 24339, 23930, 23541, 23170, 22817, 22479, 22155,
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21 21845, 21548, 21263, 20988, 20724, 20470, 20225, 19988, 19760, 19539,
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22 19326, 19119, 18919, 18725, 18536, 18354, 18176, 18004, 17837, 17674,
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23 17515, 17361, 17211, 17064, 16921, 16782, 16646, 16514, 16384
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24 };