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annotate libtwamr/vad.h @ 605:63f774192906

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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>
date Thu, 04 Dec 2025 21:01:46 +0000
parents 028ed5114e52
children
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028ed5114e52 libtwamr: implement run-time VAD selection scheme
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1 /*
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2 * In the original 3GPP code, the selection between VAD1 and VAD2 is made
028ed5114e52 libtwamr: implement run-time VAD selection scheme
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3 * only at compile time. In libtwamr we support run-time selection between
028ed5114e52 libtwamr: implement run-time VAD selection scheme
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4 * these two VAD algorithms for tinkering and investigation work; this
028ed5114e52 libtwamr: implement run-time VAD selection scheme
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5 * header file implements the logic that fits this run-time selection
028ed5114e52 libtwamr: implement run-time VAD selection scheme
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6 * into the existing code structure from 3GPP.
028ed5114e52 libtwamr: implement run-time VAD selection scheme
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7 */
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8
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9 #ifndef vad_h
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10 #define vad_h
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11
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12 #include "typedef.h"
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13 #include "vad1.h"
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14 #include "vad2.h"
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16 typedef struct {
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17 Flag use_vad2;
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18 union {
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19 vadState1 v1;
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20 vadState2 v2;
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21 } u;
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22 } vadState;
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24 void vad_reset(vadState *st, Flag use_vad2);
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25
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26 #endif /* include guard */