FreeCalypso > hg > gsm-codec-lib
view libtwamr/inv_sqrt.tab @ 477:4c9222d95647
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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/* ******************************************************************************** * * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 * R99 Version 3.3.0 * REL-4 Version 4.1.0 * ******************************************************************************** * * File : inv_sqrt.tab * Purpose : Table for routine Inv_sqrt() * $Id $ * ******************************************************************************** */ static const Word16 table[49] = { 32767, 31790, 30894, 30070, 29309, 28602, 27945, 27330, 26755, 26214, 25705, 25225, 24770, 24339, 23930, 23541, 23170, 22817, 22479, 22155, 21845, 21548, 21263, 20988, 20724, 20470, 20225, 19988, 19760, 19539, 19326, 19119, 18919, 18725, 18536, 18354, 18176, 18004, 17837, 17674, 17515, 17361, 17211, 17064, 16921, 16782, 16646, 16514, 16384 };