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Diffstat (limited to 'media/libstagefright/codecs/amrnb/enc/src/lpc.cpp')
| -rw-r--r-- | media/libstagefright/codecs/amrnb/enc/src/lpc.cpp | 542 |
1 files changed, 0 insertions, 542 deletions
diff --git a/media/libstagefright/codecs/amrnb/enc/src/lpc.cpp b/media/libstagefright/codecs/amrnb/enc/src/lpc.cpp deleted file mode 100644 index 3c1a4bc..0000000 --- a/media/libstagefright/codecs/amrnb/enc/src/lpc.cpp +++ /dev/null @@ -1,542 +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/lpc.c - - Date: 01/31/2002 - ------------------------------------------------------------------------------- - REVISION HISTORY - - Description: Updating includes and making code more simple as per comments. - - 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: - ------------------------------------------------------------------------------- -*/ - -/*---------------------------------------------------------------------------- -; INCLUDES -----------------------------------------------------------------------------*/ -#include <stdlib.h> - -#include "lpc.h" -#include "typedef.h" -#include "oper_32b.h" -#include "autocorr.h" -#include "lag_wind.h" -#include "levinson.h" -#include "cnst.h" -#include "mode.h" -#include "window_tab.h" -#include "sub.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 STORE/BUFFER/POINTER DEFINITIONS -; Variable declaration - defined here and used outside this module -----------------------------------------------------------------------------*/ - -/* ------------------------------------------------------------------------------- - FUNCTION NAME: lpc_init ------------------------------------------------------------------------------- - INPUT AND OUTPUT DEFINITIONS - - Inputs: - state = pointer to pointer of state data of type lpcState - - Outputs: - None - - Returns: - None - - Global Variables Used: - None. - - Local Variables Needed: - None. - ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - This function initializes the state data for the LPC module. - ------------------------------------------------------------------------------- - REQUIREMENTS - - None. - ------------------------------------------------------------------------------- - REFERENCES - - lpc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 - ------------------------------------------------------------------------------- - PSEUDO-CODE - - - lpcState* s; - - if (state == (lpcState **) NULL){ - // fprintf(stderr, "lpc_init: invalid parameter\n"); - return -1; - } - *state = NULL; - - // allocate memory - if ((s= (lpcState *) malloc(sizeof(lpcState))) == NULL){ - // fprintf(stderr, "lpc_init: can not malloc state structure\n"); - return -1; - } - - s->levinsonSt = NULL; - - // Init sub states - if (Levinson_init(&s->levinsonSt)) { - lpc_exit(&s); - return -1; - } - - - lpc_reset(s); - *state = s; - - return 0; - ------------------------------------------------------------------------------- - 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] - ------------------------------------------------------------------------------- -*/ -Word16 lpc_init(lpcState **state) -{ - lpcState* s; - - if (state == (lpcState **) NULL) - { - /* fprintf(stderr, "lpc_init: invalid parameter\n"); */ - return -1; - } - *state = NULL; - - /* allocate memory */ - if ((s = (lpcState *) malloc(sizeof(lpcState))) == NULL) - { - /* fprintf(stderr, "lpc_init: can not malloc state structure\n"); */ - return -1; - } - - s->levinsonSt = NULL; - - /* Init sub states */ - if (Levinson_init(&s->levinsonSt)) - { - lpc_exit(&s); - return -1; - } - - lpc_reset(s); - *state = s; - - return 0; -} - -/* ------------------------------------------------------------------------------- - FUNCTION NAME: lpc_reset ------------------------------------------------------------------------------- - INPUT AND OUTPUT DEFINITIONS - - Inputs: - state = pointer to pointer of state data of type lpcState - - Outputs: - None - - Returns: - None - - Global Variables Used: - None. - - Local Variables Needed: - None. - ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - This function resets the state data for the LPC module. - ------------------------------------------------------------------------------- - REQUIREMENTS - - None. - ------------------------------------------------------------------------------- - REFERENCES - - lpc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 - ------------------------------------------------------------------------------- - PSEUDO-CODE - - if (state == (lpcState *) NULL){ - // fprintf(stderr, "lpc_reset: invalid parameter\n"); - return -1; - } - - Levinson_reset(state->levinsonSt); - - return 0; - ------------------------------------------------------------------------------- - 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] - ------------------------------------------------------------------------------- -*/ -Word16 lpc_reset(lpcState *state) -{ - - if (state == (lpcState *) NULL) - { - /* fprintf(stderr, "lpc_reset: invalid parameter\n"); */ - return -1; - } - - Levinson_reset(state->levinsonSt); - - return 0; -} - -/* ------------------------------------------------------------------------------- - FUNCTION NAME: lpc_exit ------------------------------------------------------------------------------- - INPUT AND OUTPUT DEFINITIONS - - Inputs: - state = pointer to pointer of state data of type lpcState - - Outputs: - None - - Returns: - None - - Global Variables Used: - None. - - Local Variables Needed: - None. - ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - This function frees the state data for the LPC module. - ------------------------------------------------------------------------------- - REQUIREMENTS - - None. - ------------------------------------------------------------------------------- - REFERENCES - - lpc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 - ------------------------------------------------------------------------------- - PSEUDO-CODE - - - if (state == NULL || *state == NULL) - return; - - Levinson_exit(&(*state)->levinsonSt); - - // deallocate memory - free(*state); - *state = NULL; - - return; - - ------------------------------------------------------------------------------- - 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 lpc_exit(lpcState **state) -{ - if (state == NULL || *state == NULL) - return; - - Levinson_exit(&(*state)->levinsonSt); - - /* deallocate memory */ - free(*state); - *state = NULL; - - return; -} - - -/* ------------------------------------------------------------------------------- - FUNCTION NAME: lpc ------------------------------------------------------------------------------- - INPUT AND OUTPUT DEFINITIONS - - Inputs: - state = pointer to state data of type lpcState - mode = coder mode of type enum Mode - x[] = pointer to input signal (Q15) of type Word16 - x_12k2[] = pointer to input signal (EFR) (Q15) of type Word16 - pOverflow = pointer to overflow indicator of type Flag - - Outputs: - a[] = pointer to predictor coefficients (Q12) of type Word16 - - Returns: - None - - Global Variables Used: - None. - - Local Variables Needed: - None. - ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - This function executes the LPC functionality for GSM AMR. - ------------------------------------------------------------------------------- - REQUIREMENTS - - None. - ------------------------------------------------------------------------------- - REFERENCES - - lpc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 - ------------------------------------------------------------------------------- - PSEUDO-CODE - - Word16 rc[4]; // First 4 reflection coefficients Q15 - Word16 rLow[MP1], rHigh[MP1]; // Autocorrelations low and hi - // No fixed Q value but normalized - // so that overflow is avoided - - if ( sub ((Word16)mode, (Word16)MR122) == 0) - { - // Autocorrelations - Autocorr(x_12k2, M, rHigh, rLow, window_160_80); - // Lag windowing - Lag_window(M, rHigh, rLow); - // Levinson Durbin - Levinson(st->levinsonSt, rHigh, rLow, &a[MP1], rc); - - // Autocorrelations - Autocorr(x_12k2, M, rHigh, rLow, window_232_8); - // Lag windowing - Lag_window(M, rHigh, rLow); - // Levinson Durbin - Levinson(st->levinsonSt, rHigh, rLow, &a[MP1 * 3], rc); - } - else - { - // Autocorrelations - Autocorr(x, M, rHigh, rLow, window_200_40); - // Lag windowing - Lag_window(M, rHigh, rLow); - // Levinson Durbin - Levinson(st->levinsonSt, rHigh, rLow, &a[MP1 * 3], rc); - } - - return 0; - ------------------------------------------------------------------------------- - 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 lpc( - lpcState *st, /* i/o: State struct */ - enum Mode mode, /* i : coder mode */ - Word16 x[], /* i : Input signal Q15 */ - Word16 x_12k2[], /* i : Input signal (EFR) Q15 */ - Word16 a[], /* o : predictor coefficients Q12 */ - Flag *pOverflow -) -{ - Word16 rc[4]; /* First 4 reflection coefficients Q15 */ - Word16 rLow[MP1], rHigh[MP1]; /* Autocorrelations low and hi */ - /* No fixed Q value but normalized */ - /* so that overflow is avoided */ - - if (mode == MR122) - { - /* Autocorrelations */ - Autocorr(x_12k2, M, rHigh, rLow, window_160_80, pOverflow); - /* Lag windowing */ - Lag_window(M, rHigh, rLow, pOverflow); - /* Levinson Durbin */ - Levinson(st->levinsonSt, rHigh, rLow, &a[MP1], rc, pOverflow); - - /* Autocorrelations */ - Autocorr(x_12k2, M, rHigh, rLow, window_232_8, pOverflow); - /* Lag windowing */ - Lag_window(M, rHigh, rLow, pOverflow); - /* Levinson Durbin */ - Levinson(st->levinsonSt, rHigh, rLow, &a[MP1 * 3], rc, pOverflow); - } - else - { - /* Autocorrelations */ - Autocorr(x, M, rHigh, rLow, window_200_40, pOverflow); - /* Lag windowing */ - Lag_window(M, rHigh, rLow, pOverflow); - /* Levinson Durbin */ - Levinson(st->levinsonSt, rHigh, rLow, &a[MP1 * 3], rc, pOverflow); - } - -} - - - - - - - - - - - - - - - |