| /* ------------------------------------------------------------------ |
| * 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 26.173 |
| ANSI-C code for the Adaptive Multi-Rate - Wideband (AMR-WB) speech codec |
| Available from http://www.3gpp.org |
| |
| (C) 2007, 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: ./c/include/normalize_amr_wb.h |
| |
| Date: 12/10/2004 |
| |
| ------------------------------------------------------------------------------ |
| REVISION HISTORY |
| |
| Description: |
| ------------------------------------------------------------------------------ |
| INCLUDE DESCRIPTION |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| #ifndef NORMALIZE_AMR_WB_H |
| #define NORMALIZE_AMR_WB_H |
| |
| |
| /*---------------------------------------------------------------------------- |
| ; INCLUDES |
| ----------------------------------------------------------------------------*/ |
| |
| #include "pv_amr_wb_type_defs.h" |
| |
| /*---------------------------------------------------------------------------- |
| ; MACROS |
| ; Define module specific macros here |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; EXTERNAL VARIABLES REFERENCES |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; DEFINES AND SIMPLE TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| #if defined(PV_ARM_V5) |
| |
| __inline int16 normalize_amr_wb(int32 x) |
| { |
| int32 y; |
| __asm |
| { |
| clz y, x; |
| sub y, y, #1 |
| } |
| return (y); |
| } |
| |
| |
| #elif defined(PV_ARM_GCC_V5) |
| |
| |
| __inline int16 normalize_amr_wb(int32 x) |
| { |
| register int32 y; |
| register int32 ra = x; |
| |
| |
| asm volatile( |
| "clz %0, %1\n\t" |
| "sub %0, %0, #1" |
| : "=&r*i"(y) |
| : "r"(ra)); |
| return (y); |
| |
| } |
| |
| #else |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| int16 normalize_amr_wb(int32 x); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |
| |
| |
| |
| #endif /* PV_NORMALIZE_H */ |
