FreeCalypso > hg > gsm-codec-lib
changeset 404:a37687c6ff22
libtwamr: integrate spstproc.c
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Mon, 06 May 2024 23:17:09 +0000 |
| parents | 7e0aeab69b10 |
| children | 8fff74ca83e8 |
| files | libtwamr/Makefile libtwamr/namespace.list libtwamr/spstproc.c libtwamr/spstproc.h |
| diffstat | 4 files changed, 220 insertions(+), 2 deletions(-) [+] |
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--- a/libtwamr/Makefile Mon May 06 23:11:34 2024 +0000 +++ b/libtwamr/Makefile Mon May 06 23:17:09 2024 +0000 @@ -14,7 +14,8 @@ prmno.o pstfilt.o q_gain_c.o q_gain_p.o q_plsf.o q_plsf3_tab.o \ q_plsf5_tab.o q_plsf_3.o q_plsf_5.o qgain475.o qgain795.o qua_gain.o \ qua_gain_tab.o reorder.o residu.o s10_8pf.o set_sign.o sid_sync.o \ - spreproc.o sqrt_l.o syn_filt.o tls_flags.o weight_a.o window.o + spreproc.o spstproc.o sqrt_l.o syn_filt.o tls_flags.o weight_a.o \ + window.o HDRS= namespace.h LIB= libtwamr.a
--- a/libtwamr/namespace.list Mon May 06 23:11:34 2024 +0000 +++ b/libtwamr/namespace.list Mon May 06 23:17:09 2024 +0000 @@ -65,7 +65,7 @@ Cb_gain_average Cb_gain_average_reset MR475_update_unq_pred MR475_gain_quant MR795_gain_quant -subframePreProc +subframePreProc subframePostProc calc_unfilt_energies calc_filt_energies calc_target_energy code_2i40_9bits code_2i40_11bits code_3i40_14bits code_4i40_17bits
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/spstproc.c Mon May 06 23:17:09 2024 +0000 @@ -0,0 +1,160 @@ +/* +******************************************************************************** +* +* 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 : subframePostProc.c +* Purpose : Subframe post processing +* +******************************************************************************** +*/ + +/* +******************************************************************************** +* MODULE INCLUDE FILE AND VERSION ID +******************************************************************************** +*/ +#include "namespace.h" +#include "spstproc.h" + +/* +******************************************************************************** +* INCLUDE FILES +******************************************************************************** +*/ +#include "typedef.h" +#include "basic_op.h" +#include "oper_32b.h" +#include "no_count.h" +#include "syn_filt.h" +#include "cnst.h" + +/* +******************************************************************************** +* LOCAL VARIABLES AND TABLES +******************************************************************************** +*/ + +/* +******************************************************************************** +* PUBLIC PROGRAM CODE +******************************************************************************** +*/ +int subframePostProc( + Word16 *speech, /* i : speech segment */ + enum Mode mode, /* i : coder mode */ + Word16 i_subfr, /* i : Subframe nr */ + Word16 gain_pit, /* i : Pitch gain Q14 */ + Word16 gain_code, /* i : Decoded innovation gain */ + Word16 *Aq, /* i : A(z) quantized for the 4 subframes */ + Word16 synth[], /* i : Local snthesis */ + Word16 xn[], /* i : Target vector for pitch search */ + Word16 code[], /* i : Fixed codebook exitation */ + Word16 y1[], /* i : Filtered adaptive exitation */ + Word16 y2[], /* i : Filtered fixed codebook excitation */ + Word16 *mem_syn, /* i/o : memory of synthesis filter */ + Word16 *mem_err, /* o : pointer to error signal */ + Word16 *mem_w0, /* o : memory of weighting filter */ + Word16 *exc, /* o : long term prediction residual */ + Word16 *sharp /* o : pitch sharpening value */ +) +{ + Word16 i, j, k; + Word16 temp; + Word32 L_temp; + Word16 tempShift; + Word16 kShift; + Word16 pitch_fac; + + test (); + if (sub(mode, MR122) != 0) + { + tempShift = 1; move16 (); + kShift = 2; move16 (); + pitch_fac = gain_pit; move16 (); + } + else + { + tempShift = 2; move16 (); + kShift = 4; move16 (); + pitch_fac = shr (gain_pit, 1); + } + + /*------------------------------------------------------------* + * - Update pitch sharpening "sharp" with quantized gain_pit * + *------------------------------------------------------------*/ + + *sharp = gain_pit; move16 (); + test (); + if (sub(*sharp, SHARPMAX) > 0) + { + *sharp = SHARPMAX; move16 (); + } + /*------------------------------------------------------* + * - Find the total excitation * + * - find synthesis speech corresponding to exc[] * + * - update filters memories for finding the target * + * vector in the next subframe * + * (update error[-m..-1] and mem_w_err[]) * + *------------------------------------------------------*/ + + for (i = 0; i < L_SUBFR; i++) { + /* exc[i] = gain_pit*exc[i] + gain_code*code[i]; */ + + /* + * 12k2 others + * --------------------------------- + * exc Q0 Q0 + * gain_pit Q14 Q14 + * pitch_fac Q13 Q14 + * product: Q14 Q15 + * + * code Q12 Q13 + * gain_code Q1 Q1 + * product Q14 Q15 + * sum Q14 Q15 + * + * tempShift 2 1 + * sum<<tempShift Q16 Q16 + * result -> exc Q0 Q0 + */ + L_temp = L_mult (exc[i + i_subfr], pitch_fac); + L_temp = L_mac (L_temp, code[i], gain_code); + L_temp = L_shl (L_temp, tempShift); + exc[i + i_subfr] = round (L_temp); move16 (); + } + + Syn_filt(Aq, &exc[i_subfr], &synth[i_subfr], L_SUBFR, + mem_syn, 1); + + for (i = L_SUBFR - M, j = 0; i < L_SUBFR; i++, j++) { + mem_err[j] = sub(speech[i_subfr + i], + synth[i_subfr + i]); move16 (); + /* + * 12k2 others + * --------------------------------- + * y1 Q0 Q0 + * gain_pit Q14 Q14 + * product Q15 Q15 + * shifted prod. Q16 Q16 + * temp Q0 Q0 + * + * y2 Q10 Q12 + * gain_code Q1 Q1 + * product Q12 Q14 + * kshift 4 2 + * shifted prod. Q16 Q16 + * k Q0 Q0 + * mem_w0,xn,sum Q0 Q0 + */ + temp = extract_h(L_shl(L_mult(y1[i], gain_pit), 1)); + k = extract_h(L_shl(L_mult(y2[i], gain_code), kShift)); + mem_w0[j] = sub(xn[i], add(temp, k)); move16 (); + } + + return 0; +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/spstproc.h Mon May 06 23:17:09 2024 +0000 @@ -0,0 +1,57 @@ +/* +******************************************************************************** +* +* 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 : subframePostProc.h +* Purpose : Subframe post processing +* +******************************************************************************** +*/ +#ifndef spstproc_h +#define spstproc_h "$Id $" + +/* +******************************************************************************** +* INCLUDE FILES +******************************************************************************** +*/ +#include "tw_amr.h" +#include "typedef.h" + +/* +******************************************************************************** +* LOCAL VARIABLES AND TABLES +******************************************************************************** +*/ + +/* +******************************************************************************** +* PUBLIC PROGRAM CODE +******************************************************************************** +*/ + +int subframePostProc( + Word16 *speech, /* i : speech segment */ + enum Mode mode, /* i : coder mode */ + Word16 i_subfr, /* i : Subframe nr */ + Word16 gain_pit, /* i : Pitch gain Q14 */ + Word16 gain_code, /* i : Decoded innovation gain */ + Word16 *Aq, /* i : A(z) quantized for the 4 subframes */ + Word16 synth[], /* i : Local snthesis */ + Word16 xn[], /* i : Target vector for pitch search */ + Word16 code[], /* i : Fixed codebook exitation */ + Word16 y1[], /* i : Filtered adaptive exitation */ + Word16 y2[], /* i : Filtered fixed codebook excitation */ + Word16 *mem_syn, /* i/o : memory of synthesis filter */ + Word16 *mem_err, /* o : pointer to error signal */ + Word16 *mem_w0, /* o : memory of weighting filter */ + Word16 *exc, /* o : long term prediction residual */ + Word16 *sharp /* o : pitch sharpening value */ +); + +#endif