FreeCalypso > hg > gsm-codec-lib

annotate libgsmefr/enc_state.h @ 183:452c1d5a6268

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libgsmefr BFI w/o data: emit zero output after decoder reset In real-life usage, each EFR decoder session will most likely begin with lots of BFI frames before the first real frame arrives. However, because the spec-defined home state of the decoder is speech rather than CN, our regular logic for BFI w/o data would have to feed pseudorandom noise to the decoder (in the "fixed codebook excitation pulses" part), which is silly to do at the beginning of the decoder session right out of reset. Therefore, let's check reset_flag_old, and if we are still in the reset state, simply emit zero output.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 03 Jan 2023 00:12:18 +0000
parents 77803ce2cc22
children
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1 /*
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2 * In this header file we define our encoder state structure.
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3 * This encoder state structure is internal to libgsmefr,
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4 * NOT part of our external public interface!
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5 */
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6
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7 struct EFR_encoder_state {
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8 /* from coder.c */
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9 Word16 dtx_mode;
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10 /* from cod_12k2.c */
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11 Word16 old_speech[L_TOTAL];
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12 Word16 old_wsp[L_FRAME + PIT_MAX];
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13 Word16 old_exc[L_FRAME + PIT_MAX + L_INTERPOL];
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14 Word16 ai_zero[L_SUBFR + MP1];
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15 Word16 hvec[L_SUBFR * 2];
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16 Word16 lsp_old[M];
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17 Word16 lsp_old_q[M];
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18 Word16 mem_syn[M];
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19 Word16 mem_w0[M];
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20 Word16 mem_w[M];
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21 Word16 mem_err[M + L_SUBFR];
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22 /* from levinson.c */
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23 Word16 old_A[M + 1];
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24 /* from pre_proc.c */
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25 struct preproc_state {
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26 Word16 y2_hi;
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27 Word16 y2_lo;
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28 Word16 y1_hi;
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29 Word16 y1_lo;
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30 Word16 x0;
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31 Word16 x1;
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32 } pre_proc;
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33 /* from q_plsf_5.c */
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34 Word16 past_r2_q[M];
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35 Word16 lsf_p_CN[M];
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36 /* from q_gains.c */
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37 Word16 past_qua_en[4];
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38 Word16 pred[4];
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39 Word16 gcode0_CN;
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40 /* from dtx.c */
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41 Word16 txdtx_ctrl;
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42 Word16 CN_excitation_gain;
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43 Word32 L_pn_seed_tx;
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44 Word16 txdtx_hangover;
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45 Word16 txdtx_N_elapsed;
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46 Word16 old_CN_mem_tx[6];
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47 Word16 buf_p_tx;
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48 Word16 lsf_old_tx[DTX_HANGOVER][M];
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49 Word16 gain_code_old_tx[4 * DTX_HANGOVER];
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50 /* from vad.c */
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51 struct vad_state {
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52 Word16 rvad[9];
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53 Word16 scal_rvad;
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54 Pfloat thvad;
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55 Word32 L_sacf[27];
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56 Word32 L_sav0[36];
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57 Word16 pt_sacf;
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58 Word16 pt_sav0;
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59 Word32 L_lastdm;
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60 Word16 adaptcount;
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61 Word16 burstcount;
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62 Word16 hangcount;
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63 Word16 oldlagcount;
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64 Word16 veryoldlagcount;
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65 Word16 oldlag;
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66 } vad;
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67 Word16 ptch;
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68 };