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Diffstat (limited to 'media/libstagefright/codecs/amrnb/enc/src/spreproc.cpp')
| -rw-r--r-- | media/libstagefright/codecs/amrnb/enc/src/spreproc.cpp | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/media/libstagefright/codecs/amrnb/enc/src/spreproc.cpp b/media/libstagefright/codecs/amrnb/enc/src/spreproc.cpp deleted file mode 100644 index 71d645a..0000000 --- a/media/libstagefright/codecs/amrnb/enc/src/spreproc.cpp +++ /dev/null @@ -1,234 +0,0 @@ -/* ------------------------------------------------------------------ - * Copyright (C) 1998-2009 PacketVideo - * - * 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. - * ------------------------------------------------------------------- - */ -/**************************************************************************************** -Portions of this file are derived from the following 3GPP standard: - - 3GPP TS 26.073 - ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec - Available from http://www.3gpp.org - -(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) -Permission to distribute, modify and use this file under the standard license -terms listed above has been obtained from the copyright holder. -****************************************************************************************/ -/* ------------------------------------------------------------------------------- - - - - Pathname: ./audio/gsm-amr/c/src/spreproc.c - Functions: subframePreProc - - Date: 02/06/2002 - ------------------------------------------------------------------------------- - REVISION HISTORY - - Description: Updated template used to PV coding template. - Eliminated unnecessary use of the sub() function. - - Description: - 1. Replaced copy() and for-loop with more efficient memcpy(). - 2. Eliminated unused include file copy.h. - - Description: Replaced OSCL mem type functions and eliminated include - files that now are chosen by OSCL definitions - - Description: Replaced "int" and/or "char" with OSCL defined types. - - Description: - ------------------------------------------------------------------------------- - MODULE DESCRIPTION - - ------------------------------------------------------------------------------- -*/ - -/*---------------------------------------------------------------------------- -; INCLUDES -----------------------------------------------------------------------------*/ -#include <string.h> - -#include "spreproc.h" -#include "typedef.h" -#include "weight_a.h" -#include "syn_filt.h" -#include "residu.h" - -/*---------------------------------------------------------------------------- -; MACROS -; Define module specific macros here -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; DEFINES -; Include all pre-processor statements here. Include conditional -; compile variables also. -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; LOCAL FUNCTION DEFINITIONS -; Function Prototype declaration -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; LOCAL VARIABLE DEFINITIONS -; Variable declaration - defined here and used outside this module -----------------------------------------------------------------------------*/ - -/* ------------------------------------------------------------------------------- - FUNCTION NAME: subframePreProc ------------------------------------------------------------------------------- - INPUT AND OUTPUT DEFINITIONS - - Inputs: - mode -- enum Mode -- coder mode - gamma1 -- const Word16 array -- spectral exp. factor 1 - gamma1_12k2 -- const Word16 array -- spectral exp. factor 1 for EFR - gamma2 -- const Word16 array -- spectral exp. factor 2 - A -- Pointer to Word16 -- A(z) unquantized for the 4 subframes - Aq -- Pointer to Word16 -- A(z) quantized for the 4 subframes - speech -- Pointer to Word16 -- speech segment - mem_err -- Pointer to Word16 -- pointer to error signal - mem_w0 -- Pointer to Word16 -- memory of weighting filter - zero -- Pointer to Word16 -- pointer to zero vector - - Outputs: - ai_zero -- Word16 array -- history of weighted synth. filter - exc -- Word16 array -- long term prediction residual - h1 -- Word16 array -- impulse response - xn -- Word16 array -- target vector for pitch search - res2 -- Word16 array -- long term prediction residual - error -- Word16 array -- error of LPC synthesis filter - - Returns: - Zero - - Global Variables Used: - None - - Local Variables Needed: - None - ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - ------------------------------------------------------------------------------- - REQUIREMENTS - - None - ------------------------------------------------------------------------------- - REFERENCES - - spreproc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 - ------------------------------------------------------------------------------- - PSEUDO-CODE - - ------------------------------------------------------------------------------- - RESOURCES USED [optional] - - When the code is written for a specific target processor the - the resources used should be documented below. - - HEAP MEMORY USED: x bytes - - STACK MEMORY USED: x bytes - - CLOCK CYCLES: (cycle count equation for this function) + (variable - used to represent cycle count for each subroutine - called) - where: (cycle count variable) = cycle count for [subroutine - name] - ------------------------------------------------------------------------------- - CAUTION [optional] - [State any special notes, constraints or cautions for users of this function] - ------------------------------------------------------------------------------- -*/ - -void subframePreProc( - enum Mode mode, /* i : coder mode */ - const Word16 gamma1[], /* i : spectral exp. factor 1 */ - const Word16 gamma1_12k2[],/* i : spectral exp. factor 1 for EFR */ - const Word16 gamma2[], /* i : spectral exp. factor 2 */ - Word16 *A, /* i : A(z) unquantized for the 4 subframes */ - Word16 *Aq, /* i : A(z) quantized for the 4 subframes */ - Word16 *speech, /* i : speech segment */ - Word16 *mem_err, /* i : pointer to error signal */ - Word16 *mem_w0, /* i : memory of weighting filter */ - Word16 *zero, /* i : pointer to zero vector */ - Word16 ai_zero[], /* o : history of weighted synth. filter */ - Word16 exc[], /* o : long term prediction residual */ - Word16 h1[], /* o : impulse response */ - Word16 xn[], /* o : target vector for pitch search */ - Word16 res2[], /* o : long term prediction residual */ - Word16 error[] /* o : error of LPC synthesis filter */ -) -{ - Word16 Ap1[MP1]; /* A(z) with spectral expansion */ - Word16 Ap2[MP1]; /* A(z) with spectral expansion */ - const Word16 *g1; /* Pointer to correct gammma1 vector */ - - /* mode specific pointer to gamma1 values */ - if (mode == MR122 || mode == MR102) - { - g1 = gamma1_12k2; - } - else - { - g1 = gamma1; - } - - /* Find the weighted LPC coefficients for the weighting filter. */ - Weight_Ai(A, g1, Ap1); - Weight_Ai(A, gamma2, Ap2); - - memcpy(ai_zero, Ap1, (M + 1)*sizeof(Word16)); - - - Syn_filt(Aq, ai_zero, h1, L_SUBFR, zero, 0); - Syn_filt(Ap2, h1, h1, L_SUBFR, zero, 0); - - /* - * - * Find the target vector for pitch search: - * - */ - - /* LPC residual */ - Residu(Aq, speech, res2, L_SUBFR); - - memcpy(exc, res2, L_SUBFR*sizeof(Word16)); - - Syn_filt(Aq, exc, error, L_SUBFR, mem_err, 0); - - Residu(Ap1, error, xn, L_SUBFR); - - /* target signal xn[]*/ - Syn_filt(Ap2, xn, xn, L_SUBFR, mem_w0, 0); - - return; - -} |