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annotate libgsmefr/q_plsf5_tab.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 cc08498ed21b
children
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cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
Mychaela Falconia <falcon@freecalypso.org>
parents: 41
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2 * The original ETSI EFR code features an include file named q_plsf_5.tab,
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
Mychaela Falconia <falcon@freecalypso.org>
parents: 41
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3 * included into d_homing.c, d_plsf_5.c and q_plsf_5.c, duplicating
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
Mychaela Falconia <falcon@freecalypso.org>
parents: 41
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4 * the small mean_lsf[] table across all 3 modules and the other (big)
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
Mychaela Falconia <falcon@freecalypso.org>
parents: 41
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5 * tables across d_plsf_5.c for the decoder and q_plsf_5.c for the encoder.
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
Mychaela Falconia <falcon@freecalypso.org>
parents: 41
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6 *
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
Mychaela Falconia <falcon@freecalypso.org>
parents: 41
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7 * In our version we have moved the tables into q_plsf5_tab.c,
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
Mychaela Falconia <falcon@freecalypso.org>
parents: 41
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8 * with extern declarations in q_plsf5_tab.h.
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
Mychaela Falconia <falcon@freecalypso.org>
parents: 41
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9 */
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cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
Mychaela Falconia <falcon@freecalypso.org>
parents: 41
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11 extern const Word16 mean_lsf[10];
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13 #define DICO1_SIZE 128
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14 #define DICO2_SIZE 256
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15 #define DICO3_SIZE 256
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16 #define DICO4_SIZE 256
37e39cad5838 libgsmefr/*.tab: import from ETSI code
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17 #define DICO5_SIZE 64
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parents: 41
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19 extern const Word16 dico1_lsf[DICO1_SIZE * 4];
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
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parents: 41
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20 extern const Word16 dico2_lsf[DICO2_SIZE * 4];
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
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parents: 41
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21 extern const Word16 dico3_lsf[DICO3_SIZE * 4];
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
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parents: 41
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22 extern const Word16 dico4_lsf[DICO4_SIZE * 4];
cc08498ed21b libgsmefr: factor out q_plsf_5 tables into their own C module
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parents: 41
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23 extern const Word16 dico5_lsf[DICO5_SIZE * 4];