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author | Mans Rullgard <mans@mansr.com> | 2011-04-22 09:22:33 +0300 |
---|---|---|
committer | James Dong <jdong@google.com> | 2011-05-21 09:39:22 -0700 |
commit | e2e838afcf03e603a41a0455846eaf9614537c16 (patch) | |
tree | b6c2eedacc690a2c5514ac33dea7267cb38744bf /media/libstagefright/codecs/amrwbenc/inc/acelp.h | |
parent | 8294aac281863e584027c3f2c7d2007c4140bf24 (diff) | |
download | frameworks_av-e2e838afcf03e603a41a0455846eaf9614537c16.zip frameworks_av-e2e838afcf03e603a41a0455846eaf9614537c16.tar.gz frameworks_av-e2e838afcf03e603a41a0455846eaf9614537c16.tar.bz2 |
Convert line breaks to Unix style
Change-Id: I6219725a9fbd72432bad71a176c14f26fabdbd5f
Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/inc/acelp.h')
-rw-r--r-- | media/libstagefright/codecs/amrwbenc/inc/acelp.h | 1042 |
1 files changed, 521 insertions, 521 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/inc/acelp.h b/media/libstagefright/codecs/amrwbenc/inc/acelp.h index 4cb38a1..5a1e536 100644 --- a/media/libstagefright/codecs/amrwbenc/inc/acelp.h +++ b/media/libstagefright/codecs/amrwbenc/inc/acelp.h @@ -1,521 +1,521 @@ -/*
- ** Copyright 2003-2010, VisualOn, Inc.
- **
- ** Licensed under the Apache License, Version 2.0 (the "License");
- ** you may not use this file except in compliance with the License.
- ** You may obtain a copy of the License at
- **
- ** http://www.apache.org/licenses/LICENSE-2.0
- **
- ** Unless required by applicable law or agreed to in writing, software
- ** distributed under the License is distributed on an "AS IS" BASIS,
- ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- ** See the License for the specific language governing permissions and
- ** limitations under the License.
- */
-
-
-/*--------------------------------------------------------------------------*
- * ACELP.H *
- *--------------------------------------------------------------------------*
- * Function *
- *--------------------------------------------------------------------------*/
-#ifndef __ACELP_H__
-#define __ACELP_H__
-
-#include "typedef.h"
-#include "cod_main.h"
-
-/*-----------------------------------------------------------------*
- * LPC prototypes *
- *-----------------------------------------------------------------*/
-
-Word16 median5(Word16 x[]);
-
-void Autocorr(
- Word16 x[], /* (i) : Input signal */
- Word16 m, /* (i) : LPC order */
- Word16 r_h[], /* (o) : Autocorrelations (msb) */
- Word16 r_l[] /* (o) : Autocorrelations (lsb) */
- );
-
-void Lag_window(
- Word16 r_h[], /* (i/o) : Autocorrelations (msb) */
- Word16 r_l[] /* (i/o) : Autocorrelations (lsb) */
- );
-
-void Init_Levinson(
- Word16 * mem /* output :static memory (18 words) */
- );
-
-void Levinson(
- Word16 Rh[], /* (i) : Rh[M+1] Vector of autocorrelations (msb) */
- Word16 Rl[], /* (i) : Rl[M+1] Vector of autocorrelations (lsb) */
- Word16 A[], /* (o) Q12 : A[M] LPC coefficients (m = 16) */
- Word16 rc[], /* (o) Q15 : rc[M] Reflection coefficients. */
- Word16 * mem /* (i/o) :static memory (18 words) */
- );
-
-void Az_isp(
- Word16 a[], /* (i) Q12 : predictor coefficients */
- Word16 isp[], /* (o) Q15 : Immittance spectral pairs */
- Word16 old_isp[] /* (i) : old isp[] (in case not found M roots) */
- );
-
-void Isp_Az(
- Word16 isp[], /* (i) Q15 : Immittance spectral pairs */
- Word16 a[], /* (o) Q12 : predictor coefficients (order = M) */
- Word16 m,
- Word16 adaptive_scaling /* (i) 0 : adaptive scaling disabled */
- /* 1 : adaptive scaling enabled */
- );
-
-void Isp_isf(
- Word16 isp[], /* (i) Q15 : isp[m] (range: -1<=val<1) */
- Word16 isf[], /* (o) Q15 : isf[m] normalized (range: 0.0<=val<=0.5) */
- Word16 m /* (i) : LPC order */
- );
-
-void Isf_isp(
- Word16 isf[], /* (i) Q15 : isf[m] normalized (range: 0.0<=val<=0.5) */
- Word16 isp[], /* (o) Q15 : isp[m] (range: -1<=val<1) */
- Word16 m /* (i) : LPC order */
- );
-
-void Int_isp(
- Word16 isp_old[], /* input : isps from past frame */
- Word16 isp_new[], /* input : isps from present frame */
- Word16 frac[], /* input : fraction for 3 first subfr (Q15) */
- Word16 Az[] /* output: LP coefficients in 4 subframes */
- );
-
-void Weight_a(
- Word16 a[], /* (i) Q12 : a[m+1] LPC coefficients */
- Word16 ap[], /* (o) Q12 : Spectral expanded LPC coefficients */
- Word16 gamma, /* (i) Q15 : Spectral expansion factor. */
- Word16 m /* (i) : LPC order. */
- );
-
-
-/*-----------------------------------------------------------------*
- * isf quantizers *
- *-----------------------------------------------------------------*/
-
-void Qpisf_2s_46b(
- Word16 * isf1, /* (i) Q15 : ISF in the frequency domain (0..0.5) */
- Word16 * isf_q, /* (o) Q15 : quantized ISF (0..0.5) */
- Word16 * past_isfq, /* (io)Q15 : past ISF quantizer */
- Word16 * indice, /* (o) : quantization indices */
- Word16 nb_surv /* (i) : number of survivor (1, 2, 3 or 4) */
- );
-
-void Qpisf_2s_36b(
- Word16 * isf1, /* (i) Q15 : ISF in the frequency domain (0..0.5) */
- Word16 * isf_q, /* (o) Q15 : quantized ISF (0..0.5) */
- Word16 * past_isfq, /* (io)Q15 : past ISF quantizer */
- Word16 * indice, /* (o) : quantization indices */
- Word16 nb_surv /* (i) : number of survivor (1, 2, 3 or 4) */
- );
-
-void Dpisf_2s_46b(
- Word16 * indice, /* input: quantization indices */
- Word16 * isf_q, /* output: quantized ISF in frequency domain (0..0.5) */
- Word16 * past_isfq, /* i/0 : past ISF quantizer */
- Word16 * isfold, /* input : past quantized ISF */
- Word16 * isf_buf, /* input : isf buffer */
- Word16 bfi, /* input : Bad frame indicator */
- Word16 enc_dec
- );
-
-void Dpisf_2s_36b(
- Word16 * indice, /* input: quantization indices */
- Word16 * isf_q, /* output: quantized ISF in frequency domain (0..0.5) */
- Word16 * past_isfq, /* i/0 : past ISF quantizer */
- Word16 * isfold, /* input : past quantized ISF */
- Word16 * isf_buf, /* input : isf buffer */
- Word16 bfi, /* input : Bad frame indicator */
- Word16 enc_dec
- );
-
-void Qisf_ns(
- Word16 * isf1, /* input : ISF in the frequency domain (0..0.5) */
- Word16 * isf_q, /* output: quantized ISF */
- Word16 * indice /* output: quantization indices */
- );
-
-void Disf_ns(
- Word16 * indice, /* input: quantization indices */
- Word16 * isf_q /* input : ISF in the frequency domain (0..0.5) */
- );
-
-Word16 Sub_VQ( /* output: return quantization index */
- Word16 * x, /* input : ISF residual vector */
- Word16 * dico, /* input : quantization codebook */
- Word16 dim, /* input : dimention of vector */
- Word16 dico_size, /* input : size of quantization codebook */
- Word32 * distance /* output: error of quantization */
- );
-
-void Reorder_isf(
- Word16 * isf, /* (i/o) Q15: ISF in the frequency domain (0..0.5) */
- Word16 min_dist, /* (i) Q15 : minimum distance to keep */
- Word16 n /* (i) : number of ISF */
- );
-
-/*-----------------------------------------------------------------*
- * filter prototypes *
- *-----------------------------------------------------------------*/
-
-void Init_Decim_12k8(
- Word16 mem[] /* output: memory (2*NB_COEF_DOWN) set to zeros */
- );
-void Decim_12k8(
- Word16 sig16k[], /* input: signal to downsampling */
- Word16 lg, /* input: length of input */
- Word16 sig12k8[], /* output: decimated signal */
- Word16 mem[] /* in/out: memory (2*NB_COEF_DOWN) */
- );
-
-void Init_HP50_12k8(Word16 mem[]);
-void HP50_12k8(
- Word16 signal[], /* input/output signal */
- Word16 lg, /* lenght of signal */
- Word16 mem[] /* filter memory [6] */
- );
-void Init_HP400_12k8(Word16 mem[]);
-void HP400_12k8(
- Word16 signal[], /* input/output signal */
- Word16 lg, /* lenght of signal */
- Word16 mem[] /* filter memory [6] */
- );
-
-void Init_Filt_6k_7k(Word16 mem[]);
-void Filt_6k_7k(
- Word16 signal[], /* input: signal */
- Word16 lg, /* input: length of input */
- Word16 mem[] /* in/out: memory (size=30) */
- );
-void Filt_6k_7k_asm(
- Word16 signal[], /* input: signal */
- Word16 lg, /* input: length of input */
- Word16 mem[] /* in/out: memory (size=30) */
- );
-
-void LP_Decim2(
- Word16 x[], /* in/out: signal to process */
- Word16 l, /* input : size of filtering */
- Word16 mem[] /* in/out: memory (size=3) */
- );
-
-void Preemph(
- Word16 x[], /* (i/o) : input signal overwritten by the output */
- Word16 mu, /* (i) Q15 : preemphasis coefficient */
- Word16 lg, /* (i) : lenght of filtering */
- Word16 * mem /* (i/o) : memory (x[-1]) */
- );
-void Preemph2(
- Word16 x[], /* (i/o) : input signal overwritten by the output */
- Word16 mu, /* (i) Q15 : preemphasis coefficient */
- Word16 lg, /* (i) : lenght of filtering */
- Word16 * mem /* (i/o) : memory (x[-1]) */
- );
-void Deemph(
- Word16 x[], /* (i/o) : input signal overwritten by the output */
- Word16 mu, /* (i) Q15 : deemphasis factor */
- Word16 L, /* (i) : vector size */
- Word16 * mem /* (i/o) : memory (y[-1]) */
- );
-void Deemph2(
- Word16 x[], /* (i/o) : input signal overwritten by the output */
- Word16 mu, /* (i) Q15 : deemphasis factor */
- Word16 L, /* (i) : vector size */
- Word16 * mem /* (i/o) : memory (y[-1]) */
- );
-void Deemph_32(
- Word16 x_hi[], /* (i) : input signal (bit31..16) */
- Word16 x_lo[], /* (i) : input signal (bit15..4) */
- Word16 y[], /* (o) : output signal (x16) */
- Word16 mu, /* (i) Q15 : deemphasis factor */
- Word16 L, /* (i) : vector size */
- Word16 * mem /* (i/o) : memory (y[-1]) */
- );
-
-void Deemph_32_asm(
- Word16 x_hi[], /* (i) : input signal (bit31..16) */
- Word16 x_lo[], /* (i) : input signal (bit15..4) */
- Word16 y[], /* (o) : output signal (x16) */
- Word16 * mem /* (i/o) : memory (y[-1]) */
- );
-
-void Convolve(
- Word16 x[], /* (i) : input vector */
- Word16 h[], /* (i) Q15 : impulse response */
- Word16 y[], /* (o) 12 bits: output vector */
- Word16 L /* (i) : vector size */
- );
-
-void Convolve_asm(
- Word16 x[], /* (i) : input vector */
- Word16 h[], /* (i) Q15 : impulse response */
- Word16 y[], /* (o) 12 bits: output vector */
- Word16 L /* (i) : vector size */
- );
-
-void Residu(
- Word16 a[], /* (i) Q12 : prediction coefficients */
- Word16 x[], /* (i) : speech (values x[-m..-1] are needed */
- Word16 y[], /* (o) : residual signal */
- Word16 lg /* (i) : size of filtering */
- );
-
-void Residu_opt(
- Word16 a[], /* (i) Q12 : prediction coefficients */
- Word16 x[], /* (i) : speech (values x[-m..-1] are needed */
- Word16 y[], /* (o) : residual signal */
- Word16 lg /* (i) : size of filtering */
- );
-
-void Syn_filt(
- Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */
- Word16 x[], /* (i) : input signal */
- Word16 y[], /* (o) : output signal */
- Word16 lg, /* (i) : size of filtering */
- Word16 mem[], /* (i/o) : memory associated with this filtering. */
- Word16 update /* (i) : 0=no update, 1=update of memory. */
- );
-
-void Syn_filt_asm(
- Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */
- Word16 x[], /* (i) : input signal */
- Word16 y[], /* (o) : output signal */
- Word16 mem[] /* (i/o) : memory associated with this filtering. */
- );
-
-void Syn_filt_32(
- Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */
- Word16 m, /* (i) : order of LP filter */
- Word16 exc[], /* (i) Qnew: excitation (exc[i] >> Qnew) */
- Word16 Qnew, /* (i) : exc scaling = 0(min) to 8(max) */
- Word16 sig_hi[], /* (o) /16 : synthesis high */
- Word16 sig_lo[], /* (o) /16 : synthesis low */
- Word16 lg /* (i) : size of filtering */
- );
-
-void Syn_filt_32_asm(
- Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */
- Word16 m, /* (i) : order of LP filter */
- Word16 exc[], /* (i) Qnew: excitation (exc[i] >> Qnew) */
- Word16 Qnew, /* (i) : exc scaling = 0(min) to 8(max) */
- Word16 sig_hi[], /* (o) /16 : synthesis high */
- Word16 sig_lo[], /* (o) /16 : synthesis low */
- Word16 lg /* (i) : size of filtering */
- );
-/*-----------------------------------------------------------------*
- * pitch prototypes *
- *-----------------------------------------------------------------*/
-
-Word16 Pitch_ol( /* output: open loop pitch lag */
- Word16 signal[], /* input : signal used to compute the open loop pitch */
-/* signal[-pit_max] to signal[-1] should be known */
- Word16 pit_min, /* input : minimum pitch lag */
- Word16 pit_max, /* input : maximum pitch lag */
- Word16 L_frame /* input : length of frame to compute pitch */
-);
-
-Word16 Pitch_med_ol( /* output: open loop pitch lag */
- Word16 wsp[], /* input : signal used to compute the open loop pitch */
- /* wsp[-pit_max] to wsp[-1] should be known */
- Coder_State *st, /* i/o : global codec structure */
- Word16 L_frame /* input : length of frame to compute pitch */
-);
-
-Word16 Med_olag( /* output : median of 5 previous open-loop lags */
- Word16 prev_ol_lag, /* input : previous open-loop lag */
- Word16 old_ol_lag[5]
-);
-
-void Init_Hp_wsp(Word16 mem[]);
-void scale_mem_Hp_wsp(Word16 mem[], Word16 exp);
-void Hp_wsp(
- Word16 wsp[], /* i : wsp[] signal */
- Word16 hp_wsp[], /* o : hypass wsp[] */
- Word16 lg, /* i : lenght of signal */
- Word16 mem[] /* i/o : filter memory [9] */
-);
-
-Word16 Pitch_fr4( /* (o) : pitch period. */
- Word16 exc[], /* (i) : excitation buffer */
- Word16 xn[], /* (i) : target vector */
- Word16 h[], /* (i) Q15 : impulse response of synth/wgt filters */
- Word16 t0_min, /* (i) : minimum value in the searched range. */
- Word16 t0_max, /* (i) : maximum value in the searched range. */
- Word16 * pit_frac, /* (o) : chosen fraction (0, 1, 2 or 3). */
- Word16 i_subfr, /* (i) : indicator for first subframe. */
- Word16 t0_fr2, /* (i) : minimum value for resolution 1/2 */
- Word16 t0_fr1, /* (i) : minimum value for resolution 1 */
- Word16 L_subfr /* (i) : Length of subframe */
-);
-void Pred_lt4(
- Word16 exc[], /* in/out: excitation buffer */
- Word16 T0, /* input : integer pitch lag */
- Word16 frac, /* input : fraction of lag */
- Word16 L_subfr /* input : subframe size */
-);
-
-void pred_lt4_asm(
- Word16 exc[], /* in/out: excitation buffer */
- Word16 T0, /* input : integer pitch lag */
- Word16 frac, /* input : fraction of lag */
- Word16 L_subfr /* input : subframe size */
-);
-
-/*-----------------------------------------------------------------*
- * gain prototypes *
- *-----------------------------------------------------------------*/
-
-Word16 G_pitch( /* (o) Q14 : Gain of pitch lag saturated to 1.2 */
- Word16 xn[], /* (i) : Pitch target. */
- Word16 y1[], /* (i) : filtered adaptive codebook. */
- Word16 g_coeff[], /* : Correlations need for gain quantization. */
- Word16 L_subfr /* : Length of subframe. */
-);
-void Init_Q_gain2(
- Word16 * mem /* output :static memory (2 words) */
-);
-Word16 Q_gain2( /* Return index of quantization. */
- Word16 xn[], /* (i) Q_xn:Target vector. */
- Word16 y1[], /* (i) Q_xn:Adaptive codebook. */
- Word16 Q_xn, /* (i) :xn and y1 format */
- Word16 y2[], /* (i) Q9 :Filtered innovative vector. */
- Word16 code[], /* (i) Q9 :Innovative vector. */
- Word16 g_coeff[], /* (i) :Correlations <xn y1> <y1 y1> */
-/* Compute in G_pitch(). */
- Word16 L_subfr, /* (i) :Subframe lenght. */
- Word16 nbits, /* (i) : number of bits (6 or 7) */
- Word16 * gain_pit, /* (i/o)Q14:Pitch gain. */
- Word32 * gain_cod, /* (o) Q16 :Code gain. */
- Word16 gp_clip, /* (i) : Gp Clipping flag */
- Word16 * mem /* (i/o) :static memory (2 words) */
-);
-
-void Init_D_gain2(
- Word16 * mem /* output :static memory (4 words) */
-);
-void D_gain2(
- Word16 index, /* (i) :index of quantization. */
- Word16 nbits, /* (i) : number of bits (6 or 7) */
- Word16 code[], /* (i) Q9 :Innovative vector. */
- Word16 L_subfr, /* (i) :Subframe lenght. */
- Word16 * gain_pit, /* (o) Q14 :Pitch gain. */
- Word32 * gain_cod, /* (o) Q16 :Code gain. */
- Word16 bfi, /* (i) :bad frame indicator */
- Word16 prev_bfi, /* (i) : Previous BF indicator */
- Word16 state, /* (i) : State of BFH */
- Word16 unusable_frame, /* (i) : UF indicator */
- Word16 vad_hist, /* (i) :number of non-speech frames */
- Word16 * mem /* (i/o) :static memory (4 words) */
-);
-
-/*-----------------------------------------------------------------*
- * acelp prototypes *
- *-----------------------------------------------------------------*/
-
-void cor_h_x(
- Word16 h[], /* (i) Q12 : impulse response of weighted synthesis filter */
- Word16 x[], /* (i) Q0 : target vector */
- Word16 dn[] /* (o) <12bit : correlation between target and h[] */
-);
-void ACELP_2t64_fx(
- Word16 dn[], /* (i) <12b : correlation between target x[] and H[] */
- Word16 cn[], /* (i) <12b : residual after long term prediction */
- Word16 H[], /* (i) Q12: impulse response of weighted synthesis filter */
- Word16 code[], /* (o) Q9 : algebraic (fixed) codebook excitation */
- Word16 y[], /* (o) Q9 : filtered fixed codebook excitation */
- Word16 * index /* (o) : index (12): 5+1+5+1 = 11 bits. */
-);
-
-void ACELP_4t64_fx(
- Word16 dn[], /* (i) <12b : correlation between target x[] and H[] */
- Word16 cn[], /* (i) <12b : residual after long term prediction */
- Word16 H[], /* (i) Q12: impulse response of weighted synthesis filter */
- Word16 code[], /* (o) Q9 : algebraic (fixed) codebook excitation */
- Word16 y[], /* (o) Q9 : filtered fixed codebook excitation */
- Word16 nbbits, /* (i) : 20, 36, 44, 52, 64, 72 or 88 bits */
- Word16 ser_size, /* (i) : bit rate */
- Word16 _index[] /* (o) : index (20): 5+5+5+5 = 20 bits. */
- /* (o) : index (36): 9+9+9+9 = 36 bits. */
- /* (o) : index (44): 13+9+13+9 = 44 bits. */
- /* (o) : index (52): 13+13+13+13 = 52 bits. */
- /* (o) : index (64): 2+2+2+2+14+14+14+14 = 64 bits. */
- /* (o) : index (72): 10+2+10+2+10+14+10+14 = 72 bits. */
- /* (o) : index (88): 11+11+11+11+11+11+11+11 = 88 bits. */
-);
-
-void Pit_shrp(
- Word16 * x, /* in/out: impulse response (or algebraic code) */
- Word16 pit_lag, /* input : pitch lag */
- Word16 sharp, /* input : pitch sharpening factor (Q15) */
- Word16 L_subfr /* input : subframe size */
-);
-
-
-/*-----------------------------------------------------------------*
- * others prototypes *
- *-----------------------------------------------------------------*/
-
-void Copy(
- Word16 x[], /* (i) : input vector */
- Word16 y[], /* (o) : output vector */
- Word16 L /* (i) : vector length */
-);
-void Set_zero(
- Word16 x[], /* (o) : vector to clear */
- Word16 L /* (i) : length of vector */
-);
-void Updt_tar(
- Word16 * x, /* (i) Q0 : old target (for pitch search) */
- Word16 * x2, /* (o) Q0 : new target (for codebook search) */
- Word16 * y, /* (i) Q0 : filtered adaptive codebook vector */
- Word16 gain, /* (i) Q14 : adaptive codebook gain */
- Word16 L /* (i) : subframe size */
-);
-Word16 voice_factor( /* (o) Q15 : factor (-1=unvoiced to 1=voiced) */
- Word16 exc[], /* (i) Q_exc: pitch excitation */
- Word16 Q_exc, /* (i) : exc format */
- Word16 gain_pit, /* (i) Q14 : gain of pitch */
- Word16 code[], /* (i) Q9 : Fixed codebook excitation */
- Word16 gain_code, /* (i) Q0 : gain of code */
- Word16 L_subfr /* (i) : subframe length */
-);
-void Scale_sig(
- Word16 x[], /* (i/o) : signal to scale */
- Word16 lg, /* (i) : size of x[] */
- Word16 exp /* (i) : exponent: x = round(x << exp) */
-);
-
-void Scale_sig_opt(
- Word16 x[], /* (i/o) : signal to scale */
- Word16 lg, /* (i) : size of x[] */
- Word16 exp /* (i) : exponent: x = round(x << exp) */
-);
-
-Word16 Random(Word16 * seed);
-
-void Init_gp_clip(
- Word16 mem[] /* (o) : memory of gain of pitch clipping algorithm */
-);
-Word16 Gp_clip(
- Word16 mem[] /* (i/o) : memory of gain of pitch clipping algorithm */
-);
-void Gp_clip_test_isf(
- Word16 isf[], /* (i) : isf values (in frequency domain) */
- Word16 mem[] /* (i/o) : memory of gain of pitch clipping algorithm */
-);
-void Gp_clip_test_gain_pit(
- Word16 gain_pit, /* (i) : gain of quantized pitch */
- Word16 mem[] /* (i/o) : memory of gain of pitch clipping algorithm */
-);
-
-
-#endif //__ACELP_H__
-
+/* + ** Copyright 2003-2010, VisualOn, Inc. + ** + ** Licensed under the Apache License, Version 2.0 (the "License"); + ** you may not use this file except in compliance with the License. + ** You may obtain a copy of the License at + ** + ** http://www.apache.org/licenses/LICENSE-2.0 + ** + ** Unless required by applicable law or agreed to in writing, software + ** distributed under the License is distributed on an "AS IS" BASIS, + ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + ** See the License for the specific language governing permissions and + ** limitations under the License. + */ + + +/*--------------------------------------------------------------------------* + * ACELP.H * + *--------------------------------------------------------------------------* + * Function * + *--------------------------------------------------------------------------*/ +#ifndef __ACELP_H__ +#define __ACELP_H__ + +#include "typedef.h" +#include "cod_main.h" + +/*-----------------------------------------------------------------* + * LPC prototypes * + *-----------------------------------------------------------------*/ + +Word16 median5(Word16 x[]); + +void Autocorr( + Word16 x[], /* (i) : Input signal */ + Word16 m, /* (i) : LPC order */ + Word16 r_h[], /* (o) : Autocorrelations (msb) */ + Word16 r_l[] /* (o) : Autocorrelations (lsb) */ + ); + +void Lag_window( + Word16 r_h[], /* (i/o) : Autocorrelations (msb) */ + Word16 r_l[] /* (i/o) : Autocorrelations (lsb) */ + ); + +void Init_Levinson( + Word16 * mem /* output :static memory (18 words) */ + ); + +void Levinson( + Word16 Rh[], /* (i) : Rh[M+1] Vector of autocorrelations (msb) */ + Word16 Rl[], /* (i) : Rl[M+1] Vector of autocorrelations (lsb) */ + Word16 A[], /* (o) Q12 : A[M] LPC coefficients (m = 16) */ + Word16 rc[], /* (o) Q15 : rc[M] Reflection coefficients. */ + Word16 * mem /* (i/o) :static memory (18 words) */ + ); + +void Az_isp( + Word16 a[], /* (i) Q12 : predictor coefficients */ + Word16 isp[], /* (o) Q15 : Immittance spectral pairs */ + Word16 old_isp[] /* (i) : old isp[] (in case not found M roots) */ + ); + +void Isp_Az( + Word16 isp[], /* (i) Q15 : Immittance spectral pairs */ + Word16 a[], /* (o) Q12 : predictor coefficients (order = M) */ + Word16 m, + Word16 adaptive_scaling /* (i) 0 : adaptive scaling disabled */ + /* 1 : adaptive scaling enabled */ + ); + +void Isp_isf( + Word16 isp[], /* (i) Q15 : isp[m] (range: -1<=val<1) */ + Word16 isf[], /* (o) Q15 : isf[m] normalized (range: 0.0<=val<=0.5) */ + Word16 m /* (i) : LPC order */ + ); + +void Isf_isp( + Word16 isf[], /* (i) Q15 : isf[m] normalized (range: 0.0<=val<=0.5) */ + Word16 isp[], /* (o) Q15 : isp[m] (range: -1<=val<1) */ + Word16 m /* (i) : LPC order */ + ); + +void Int_isp( + Word16 isp_old[], /* input : isps from past frame */ + Word16 isp_new[], /* input : isps from present frame */ + Word16 frac[], /* input : fraction for 3 first subfr (Q15) */ + Word16 Az[] /* output: LP coefficients in 4 subframes */ + ); + +void Weight_a( + Word16 a[], /* (i) Q12 : a[m+1] LPC coefficients */ + Word16 ap[], /* (o) Q12 : Spectral expanded LPC coefficients */ + Word16 gamma, /* (i) Q15 : Spectral expansion factor. */ + Word16 m /* (i) : LPC order. */ + ); + + +/*-----------------------------------------------------------------* + * isf quantizers * + *-----------------------------------------------------------------*/ + +void Qpisf_2s_46b( + Word16 * isf1, /* (i) Q15 : ISF in the frequency domain (0..0.5) */ + Word16 * isf_q, /* (o) Q15 : quantized ISF (0..0.5) */ + Word16 * past_isfq, /* (io)Q15 : past ISF quantizer */ + Word16 * indice, /* (o) : quantization indices */ + Word16 nb_surv /* (i) : number of survivor (1, 2, 3 or 4) */ + ); + +void Qpisf_2s_36b( + Word16 * isf1, /* (i) Q15 : ISF in the frequency domain (0..0.5) */ + Word16 * isf_q, /* (o) Q15 : quantized ISF (0..0.5) */ + Word16 * past_isfq, /* (io)Q15 : past ISF quantizer */ + Word16 * indice, /* (o) : quantization indices */ + Word16 nb_surv /* (i) : number of survivor (1, 2, 3 or 4) */ + ); + +void Dpisf_2s_46b( + Word16 * indice, /* input: quantization indices */ + Word16 * isf_q, /* output: quantized ISF in frequency domain (0..0.5) */ + Word16 * past_isfq, /* i/0 : past ISF quantizer */ + Word16 * isfold, /* input : past quantized ISF */ + Word16 * isf_buf, /* input : isf buffer */ + Word16 bfi, /* input : Bad frame indicator */ + Word16 enc_dec + ); + +void Dpisf_2s_36b( + Word16 * indice, /* input: quantization indices */ + Word16 * isf_q, /* output: quantized ISF in frequency domain (0..0.5) */ + Word16 * past_isfq, /* i/0 : past ISF quantizer */ + Word16 * isfold, /* input : past quantized ISF */ + Word16 * isf_buf, /* input : isf buffer */ + Word16 bfi, /* input : Bad frame indicator */ + Word16 enc_dec + ); + +void Qisf_ns( + Word16 * isf1, /* input : ISF in the frequency domain (0..0.5) */ + Word16 * isf_q, /* output: quantized ISF */ + Word16 * indice /* output: quantization indices */ + ); + +void Disf_ns( + Word16 * indice, /* input: quantization indices */ + Word16 * isf_q /* input : ISF in the frequency domain (0..0.5) */ + ); + +Word16 Sub_VQ( /* output: return quantization index */ + Word16 * x, /* input : ISF residual vector */ + Word16 * dico, /* input : quantization codebook */ + Word16 dim, /* input : dimention of vector */ + Word16 dico_size, /* input : size of quantization codebook */ + Word32 * distance /* output: error of quantization */ + ); + +void Reorder_isf( + Word16 * isf, /* (i/o) Q15: ISF in the frequency domain (0..0.5) */ + Word16 min_dist, /* (i) Q15 : minimum distance to keep */ + Word16 n /* (i) : number of ISF */ + ); + +/*-----------------------------------------------------------------* + * filter prototypes * + *-----------------------------------------------------------------*/ + +void Init_Decim_12k8( + Word16 mem[] /* output: memory (2*NB_COEF_DOWN) set to zeros */ + ); +void Decim_12k8( + Word16 sig16k[], /* input: signal to downsampling */ + Word16 lg, /* input: length of input */ + Word16 sig12k8[], /* output: decimated signal */ + Word16 mem[] /* in/out: memory (2*NB_COEF_DOWN) */ + ); + +void Init_HP50_12k8(Word16 mem[]); +void HP50_12k8( + Word16 signal[], /* input/output signal */ + Word16 lg, /* lenght of signal */ + Word16 mem[] /* filter memory [6] */ + ); +void Init_HP400_12k8(Word16 mem[]); +void HP400_12k8( + Word16 signal[], /* input/output signal */ + Word16 lg, /* lenght of signal */ + Word16 mem[] /* filter memory [6] */ + ); + +void Init_Filt_6k_7k(Word16 mem[]); +void Filt_6k_7k( + Word16 signal[], /* input: signal */ + Word16 lg, /* input: length of input */ + Word16 mem[] /* in/out: memory (size=30) */ + ); +void Filt_6k_7k_asm( + Word16 signal[], /* input: signal */ + Word16 lg, /* input: length of input */ + Word16 mem[] /* in/out: memory (size=30) */ + ); + +void LP_Decim2( + Word16 x[], /* in/out: signal to process */ + Word16 l, /* input : size of filtering */ + Word16 mem[] /* in/out: memory (size=3) */ + ); + +void Preemph( + Word16 x[], /* (i/o) : input signal overwritten by the output */ + Word16 mu, /* (i) Q15 : preemphasis coefficient */ + Word16 lg, /* (i) : lenght of filtering */ + Word16 * mem /* (i/o) : memory (x[-1]) */ + ); +void Preemph2( + Word16 x[], /* (i/o) : input signal overwritten by the output */ + Word16 mu, /* (i) Q15 : preemphasis coefficient */ + Word16 lg, /* (i) : lenght of filtering */ + Word16 * mem /* (i/o) : memory (x[-1]) */ + ); +void Deemph( + Word16 x[], /* (i/o) : input signal overwritten by the output */ + Word16 mu, /* (i) Q15 : deemphasis factor */ + Word16 L, /* (i) : vector size */ + Word16 * mem /* (i/o) : memory (y[-1]) */ + ); +void Deemph2( + Word16 x[], /* (i/o) : input signal overwritten by the output */ + Word16 mu, /* (i) Q15 : deemphasis factor */ + Word16 L, /* (i) : vector size */ + Word16 * mem /* (i/o) : memory (y[-1]) */ + ); +void Deemph_32( + Word16 x_hi[], /* (i) : input signal (bit31..16) */ + Word16 x_lo[], /* (i) : input signal (bit15..4) */ + Word16 y[], /* (o) : output signal (x16) */ + Word16 mu, /* (i) Q15 : deemphasis factor */ + Word16 L, /* (i) : vector size */ + Word16 * mem /* (i/o) : memory (y[-1]) */ + ); + +void Deemph_32_asm( + Word16 x_hi[], /* (i) : input signal (bit31..16) */ + Word16 x_lo[], /* (i) : input signal (bit15..4) */ + Word16 y[], /* (o) : output signal (x16) */ + Word16 * mem /* (i/o) : memory (y[-1]) */ + ); + +void Convolve( + Word16 x[], /* (i) : input vector */ + Word16 h[], /* (i) Q15 : impulse response */ + Word16 y[], /* (o) 12 bits: output vector */ + Word16 L /* (i) : vector size */ + ); + +void Convolve_asm( + Word16 x[], /* (i) : input vector */ + Word16 h[], /* (i) Q15 : impulse response */ + Word16 y[], /* (o) 12 bits: output vector */ + Word16 L /* (i) : vector size */ + ); + +void Residu( + Word16 a[], /* (i) Q12 : prediction coefficients */ + Word16 x[], /* (i) : speech (values x[-m..-1] are needed */ + Word16 y[], /* (o) : residual signal */ + Word16 lg /* (i) : size of filtering */ + ); + +void Residu_opt( + Word16 a[], /* (i) Q12 : prediction coefficients */ + Word16 x[], /* (i) : speech (values x[-m..-1] are needed */ + Word16 y[], /* (o) : residual signal */ + Word16 lg /* (i) : size of filtering */ + ); + +void Syn_filt( + Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */ + Word16 x[], /* (i) : input signal */ + Word16 y[], /* (o) : output signal */ + Word16 lg, /* (i) : size of filtering */ + Word16 mem[], /* (i/o) : memory associated with this filtering. */ + Word16 update /* (i) : 0=no update, 1=update of memory. */ + ); + +void Syn_filt_asm( + Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */ + Word16 x[], /* (i) : input signal */ + Word16 y[], /* (o) : output signal */ + Word16 mem[] /* (i/o) : memory associated with this filtering. */ + ); + +void Syn_filt_32( + Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */ + Word16 m, /* (i) : order of LP filter */ + Word16 exc[], /* (i) Qnew: excitation (exc[i] >> Qnew) */ + Word16 Qnew, /* (i) : exc scaling = 0(min) to 8(max) */ + Word16 sig_hi[], /* (o) /16 : synthesis high */ + Word16 sig_lo[], /* (o) /16 : synthesis low */ + Word16 lg /* (i) : size of filtering */ + ); + +void Syn_filt_32_asm( + Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */ + Word16 m, /* (i) : order of LP filter */ + Word16 exc[], /* (i) Qnew: excitation (exc[i] >> Qnew) */ + Word16 Qnew, /* (i) : exc scaling = 0(min) to 8(max) */ + Word16 sig_hi[], /* (o) /16 : synthesis high */ + Word16 sig_lo[], /* (o) /16 : synthesis low */ + Word16 lg /* (i) : size of filtering */ + ); +/*-----------------------------------------------------------------* + * pitch prototypes * + *-----------------------------------------------------------------*/ + +Word16 Pitch_ol( /* output: open loop pitch lag */ + Word16 signal[], /* input : signal used to compute the open loop pitch */ +/* signal[-pit_max] to signal[-1] should be known */ + Word16 pit_min, /* input : minimum pitch lag */ + Word16 pit_max, /* input : maximum pitch lag */ + Word16 L_frame /* input : length of frame to compute pitch */ +); + +Word16 Pitch_med_ol( /* output: open loop pitch lag */ + Word16 wsp[], /* input : signal used to compute the open loop pitch */ + /* wsp[-pit_max] to wsp[-1] should be known */ + Coder_State *st, /* i/o : global codec structure */ + Word16 L_frame /* input : length of frame to compute pitch */ +); + +Word16 Med_olag( /* output : median of 5 previous open-loop lags */ + Word16 prev_ol_lag, /* input : previous open-loop lag */ + Word16 old_ol_lag[5] +); + +void Init_Hp_wsp(Word16 mem[]); +void scale_mem_Hp_wsp(Word16 mem[], Word16 exp); +void Hp_wsp( + Word16 wsp[], /* i : wsp[] signal */ + Word16 hp_wsp[], /* o : hypass wsp[] */ + Word16 lg, /* i : lenght of signal */ + Word16 mem[] /* i/o : filter memory [9] */ +); + +Word16 Pitch_fr4( /* (o) : pitch period. */ + Word16 exc[], /* (i) : excitation buffer */ + Word16 xn[], /* (i) : target vector */ + Word16 h[], /* (i) Q15 : impulse response of synth/wgt filters */ + Word16 t0_min, /* (i) : minimum value in the searched range. */ + Word16 t0_max, /* (i) : maximum value in the searched range. */ + Word16 * pit_frac, /* (o) : chosen fraction (0, 1, 2 or 3). */ + Word16 i_subfr, /* (i) : indicator for first subframe. */ + Word16 t0_fr2, /* (i) : minimum value for resolution 1/2 */ + Word16 t0_fr1, /* (i) : minimum value for resolution 1 */ + Word16 L_subfr /* (i) : Length of subframe */ +); +void Pred_lt4( + Word16 exc[], /* in/out: excitation buffer */ + Word16 T0, /* input : integer pitch lag */ + Word16 frac, /* input : fraction of lag */ + Word16 L_subfr /* input : subframe size */ +); + +void pred_lt4_asm( + Word16 exc[], /* in/out: excitation buffer */ + Word16 T0, /* input : integer pitch lag */ + Word16 frac, /* input : fraction of lag */ + Word16 L_subfr /* input : subframe size */ +); + +/*-----------------------------------------------------------------* + * gain prototypes * + *-----------------------------------------------------------------*/ + +Word16 G_pitch( /* (o) Q14 : Gain of pitch lag saturated to 1.2 */ + Word16 xn[], /* (i) : Pitch target. */ + Word16 y1[], /* (i) : filtered adaptive codebook. */ + Word16 g_coeff[], /* : Correlations need for gain quantization. */ + Word16 L_subfr /* : Length of subframe. */ +); +void Init_Q_gain2( + Word16 * mem /* output :static memory (2 words) */ +); +Word16 Q_gain2( /* Return index of quantization. */ + Word16 xn[], /* (i) Q_xn:Target vector. */ + Word16 y1[], /* (i) Q_xn:Adaptive codebook. */ + Word16 Q_xn, /* (i) :xn and y1 format */ + Word16 y2[], /* (i) Q9 :Filtered innovative vector. */ + Word16 code[], /* (i) Q9 :Innovative vector. */ + Word16 g_coeff[], /* (i) :Correlations <xn y1> <y1 y1> */ +/* Compute in G_pitch(). */ + Word16 L_subfr, /* (i) :Subframe lenght. */ + Word16 nbits, /* (i) : number of bits (6 or 7) */ + Word16 * gain_pit, /* (i/o)Q14:Pitch gain. */ + Word32 * gain_cod, /* (o) Q16 :Code gain. */ + Word16 gp_clip, /* (i) : Gp Clipping flag */ + Word16 * mem /* (i/o) :static memory (2 words) */ +); + +void Init_D_gain2( + Word16 * mem /* output :static memory (4 words) */ +); +void D_gain2( + Word16 index, /* (i) :index of quantization. */ + Word16 nbits, /* (i) : number of bits (6 or 7) */ + Word16 code[], /* (i) Q9 :Innovative vector. */ + Word16 L_subfr, /* (i) :Subframe lenght. */ + Word16 * gain_pit, /* (o) Q14 :Pitch gain. */ + Word32 * gain_cod, /* (o) Q16 :Code gain. */ + Word16 bfi, /* (i) :bad frame indicator */ + Word16 prev_bfi, /* (i) : Previous BF indicator */ + Word16 state, /* (i) : State of BFH */ + Word16 unusable_frame, /* (i) : UF indicator */ + Word16 vad_hist, /* (i) :number of non-speech frames */ + Word16 * mem /* (i/o) :static memory (4 words) */ +); + +/*-----------------------------------------------------------------* + * acelp prototypes * + *-----------------------------------------------------------------*/ + +void cor_h_x( + Word16 h[], /* (i) Q12 : impulse response of weighted synthesis filter */ + Word16 x[], /* (i) Q0 : target vector */ + Word16 dn[] /* (o) <12bit : correlation between target and h[] */ +); +void ACELP_2t64_fx( + Word16 dn[], /* (i) <12b : correlation between target x[] and H[] */ + Word16 cn[], /* (i) <12b : residual after long term prediction */ + Word16 H[], /* (i) Q12: impulse response of weighted synthesis filter */ + Word16 code[], /* (o) Q9 : algebraic (fixed) codebook excitation */ + Word16 y[], /* (o) Q9 : filtered fixed codebook excitation */ + Word16 * index /* (o) : index (12): 5+1+5+1 = 11 bits. */ +); + +void ACELP_4t64_fx( + Word16 dn[], /* (i) <12b : correlation between target x[] and H[] */ + Word16 cn[], /* (i) <12b : residual after long term prediction */ + Word16 H[], /* (i) Q12: impulse response of weighted synthesis filter */ + Word16 code[], /* (o) Q9 : algebraic (fixed) codebook excitation */ + Word16 y[], /* (o) Q9 : filtered fixed codebook excitation */ + Word16 nbbits, /* (i) : 20, 36, 44, 52, 64, 72 or 88 bits */ + Word16 ser_size, /* (i) : bit rate */ + Word16 _index[] /* (o) : index (20): 5+5+5+5 = 20 bits. */ + /* (o) : index (36): 9+9+9+9 = 36 bits. */ + /* (o) : index (44): 13+9+13+9 = 44 bits. */ + /* (o) : index (52): 13+13+13+13 = 52 bits. */ + /* (o) : index (64): 2+2+2+2+14+14+14+14 = 64 bits. */ + /* (o) : index (72): 10+2+10+2+10+14+10+14 = 72 bits. */ + /* (o) : index (88): 11+11+11+11+11+11+11+11 = 88 bits. */ +); + +void Pit_shrp( + Word16 * x, /* in/out: impulse response (or algebraic code) */ + Word16 pit_lag, /* input : pitch lag */ + Word16 sharp, /* input : pitch sharpening factor (Q15) */ + Word16 L_subfr /* input : subframe size */ +); + + +/*-----------------------------------------------------------------* + * others prototypes * + *-----------------------------------------------------------------*/ + +void Copy( + Word16 x[], /* (i) : input vector */ + Word16 y[], /* (o) : output vector */ + Word16 L /* (i) : vector length */ +); +void Set_zero( + Word16 x[], /* (o) : vector to clear */ + Word16 L /* (i) : length of vector */ +); +void Updt_tar( + Word16 * x, /* (i) Q0 : old target (for pitch search) */ + Word16 * x2, /* (o) Q0 : new target (for codebook search) */ + Word16 * y, /* (i) Q0 : filtered adaptive codebook vector */ + Word16 gain, /* (i) Q14 : adaptive codebook gain */ + Word16 L /* (i) : subframe size */ +); +Word16 voice_factor( /* (o) Q15 : factor (-1=unvoiced to 1=voiced) */ + Word16 exc[], /* (i) Q_exc: pitch excitation */ + Word16 Q_exc, /* (i) : exc format */ + Word16 gain_pit, /* (i) Q14 : gain of pitch */ + Word16 code[], /* (i) Q9 : Fixed codebook excitation */ + Word16 gain_code, /* (i) Q0 : gain of code */ + Word16 L_subfr /* (i) : subframe length */ +); +void Scale_sig( + Word16 x[], /* (i/o) : signal to scale */ + Word16 lg, /* (i) : size of x[] */ + Word16 exp /* (i) : exponent: x = round(x << exp) */ +); + +void Scale_sig_opt( + Word16 x[], /* (i/o) : signal to scale */ + Word16 lg, /* (i) : size of x[] */ + Word16 exp /* (i) : exponent: x = round(x << exp) */ +); + +Word16 Random(Word16 * seed); + +void Init_gp_clip( + Word16 mem[] /* (o) : memory of gain of pitch clipping algorithm */ +); +Word16 Gp_clip( + Word16 mem[] /* (i/o) : memory of gain of pitch clipping algorithm */ +); +void Gp_clip_test_isf( + Word16 isf[], /* (i) : isf values (in frequency domain) */ + Word16 mem[] /* (i/o) : memory of gain of pitch clipping algorithm */ +); +void Gp_clip_test_gain_pit( + Word16 gain_pit, /* (i) : gain of quantized pitch */ + Word16 mem[] /* (i/o) : memory of gain of pitch clipping algorithm */ +); + + +#endif //__ACELP_H__ + |