FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/log2.tab @ 605:63f774192906
gsmhr_decoder_twts002_in(): set BFI=1 SID=1 for invalid SID
When a received TW-TS-002 RTP payload indicates invalid SID,
which of the 3 possible BFI/SID combinations should we pass to
our internal ETSI-based speech decoder or TFO engine?
Our original code passed BFI=0 SID=1, but upon further reflection,
BFI=1 SID=1 is a better choice. In the corner case where received
invalid SID is fed to a full decoder in homed state, setting BFI=1
allows that decoder to emit zeros on PCM and stay homed, instead of
launching into full decoding.
| author | Mychaela Falconia <falcon@freecalypso.org> |
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| date | Thu, 04 Dec 2025 21:01:46 +0000 |
| parents | bfe74a9edd5a |
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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 : log2.tab |
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11 * Purpose : Table for routine Log2(). |
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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[33] = |
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17 { |
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18 0, 1455, 2866, 4236, 5568, 6863, 8124, 9352, 10549, 11716, |
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19 12855, 13967, 15054, 16117, 17156, 18172, 19167, 20142, 21097, 22033, |
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20 22951, 23852, 24735, 25603, 26455, 27291, 28113, 28922, 29716, 30497, |
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21 31266, 32023, 32767 |
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22 }; |
