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Diffstat (limited to 'media/libstagefright/codecs/amrnb/enc/src/lag_wind.cpp')
| -rw-r--r-- | media/libstagefright/codecs/amrnb/enc/src/lag_wind.cpp | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/media/libstagefright/codecs/amrnb/enc/src/lag_wind.cpp b/media/libstagefright/codecs/amrnb/enc/src/lag_wind.cpp deleted file mode 100644 index 0b2d2a1..0000000 --- a/media/libstagefright/codecs/amrnb/enc/src/lag_wind.cpp +++ /dev/null @@ -1,195 +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/lag_wind.c - - Date: 01/31/2002 - ------------------------------------------------------------------------------- - REVISION HISTORY - - Description: - 1. Eliminated unused include files. - 2. Replaced array addressing by pointers - 3. Eliminated l_extract() function call - - Description: Added casting to eliminate warnings - - Description: Replaced "int" and/or "char" with OSCL defined types. - - Description: - ------------------------------------------------------------------------------- -*/ - -/*---------------------------------------------------------------------------- -; INCLUDES -----------------------------------------------------------------------------*/ -#include "lag_wind.h" -#include "lag_wind_tab.h" -#include "basic_op.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: lag_wind ------------------------------------------------------------------------------- - INPUT AND OUTPUT DEFINITIONS - - Inputs: - m = LPC order of type Word16 - r_h[] = pointer to autocorrelations (msb) of type Word16 - r_l[] = pointer to autocorrelations (lsb) of type Word16 - pOverflow = pointer to overflow flag - - Outputs: - None - - Returns: - None - - Global Variables Used: - None. - - Local Variables Needed: - None. - ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - File : lag_wind.c - Purpose : Lag windowing of autocorrelations. - - FUNCTION: Lag_window() - - PURPOSE: Lag windowing of autocorrelations. - - DESCRIPTION: - r[i] = r[i]*lag_wind[i], i=1,...,10 - - r[i] and lag_wind[i] are in special double precision format. - See "oper_32b.c" for the format. - ------------------------------------------------------------------------------- - REQUIREMENTS - - None. - ------------------------------------------------------------------------------- - REFERENCES - - lag_wind.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 - ------------------------------------------------------------------------------- - PSEUDO-CODE - - Word16 i; - Word32 x; - - for (i = 1; i <= m; i++) - { - x = Mpy_32 (r_h[i], r_l[i], lag_h[i - 1], lag_l[i - 1], pOverflow); - L_Extract (x, &r_h[i], &r_l[i], pOverflow); - } - 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 Lag_window( - Word16 m, /* (i) : LPC order */ - Word16 r_h[], /* (i/o) : Autocorrelations (msb) */ - Word16 r_l[], /* (i/o) : Autocorrelations (lsb) */ - Flag *pOverflow -) -{ - Word16 i; - Word32 x; - const Word16 *p_lag_h = &lag_h[0]; - const Word16 *p_lag_l = &lag_l[0]; - Word16 *p_r_h = &r_h[1]; - Word16 *p_r_l = &r_l[1]; - - for (i = m; i != 0 ; i--) - { - x = Mpy_32(*(p_r_h), *(p_r_l), *(p_lag_h++), *(p_lag_l++), pOverflow); - *(p_r_h) = (Word16)(x >> 16); - *(p_r_l++) = (x >> 1) - (*(p_r_h++) << 15); - } - - return; -} - |