| /* ------------------------------------------------------------------ |
| * 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. |
| * ------------------------------------------------------------------- |
| */ |
| /* |
| ------------------------------------------------------------------------------ |
| PacketVideo Corp. |
| MP3 Decoder Library |
| |
| Filename: pvmp3_decode_header.h |
| |
| Date: 09/21/2007 |
| |
| ------------------------------------------------------------------------------ |
| REVISION HISTORY |
| |
| Description: |
| |
| ------------------------------------------------------------------------------ |
| INCLUDE DESCRIPTION |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| /*---------------------------------------------------------------------------- |
| ; CONTINUE ONLY IF NOT ALREADY DEFINED |
| ----------------------------------------------------------------------------*/ |
| #ifndef PVMP3_POLYPHASE_FILTER_WINDOW_H |
| #define PVMP3_POLYPHASE_FILTER_WINDOW_H |
| |
| /*---------------------------------------------------------------------------- |
| ; INCLUDES |
| ----------------------------------------------------------------------------*/ |
| |
| #include "pvmp3_audio_type_defs.h" |
| #include "s_tmp3dec_chan.h" |
| |
| /*---------------------------------------------------------------------------- |
| ; MACROS |
| ; Define module specific macros here |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; DEFINES |
| ; Include all pre-processor statements here. |
| ----------------------------------------------------------------------------*/ |
| #define MAX_16BITS_INT 0x7FFF |
| |
| /*---------------------------------------------------------------------------- |
| ; EXTERNAL VARIABLES REFERENCES |
| ; Declare variables used in this module but defined elsewhere |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; SIMPLE TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; ENUMERATED TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; STRUCTURES TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; GLOBAL FUNCTION DEFINITIONS |
| ; Function Prototype declaration |
| ----------------------------------------------------------------------------*/ |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| |
| #if (defined(PV_ARM_V5)||defined(PV_ARM_V4)) |
| |
| |
| __inline int16 saturate16(int32 sample) |
| { |
| int32 a; |
| int32 b = 31; |
| __asm |
| { |
| mov a, sample, asr#15 |
| teq a, sample, asr b |
| eorne sample, MAX_16BITS_INT, sample, asr#31 |
| } |
| return sample ; |
| } |
| |
| #else |
| |
| inline int16 saturate16(int32 sample) |
| { |
| |
| if ((sample >> 15) ^(sample >> 31)) |
| { |
| sample = MAX_16BITS_INT ^(sample >> 31); |
| } |
| return sample; |
| |
| } |
| #endif |
| |
| |
| void pvmp3_polyphase_filter_window(int32 *synth_buffer, |
| int16 *outPcm, |
| int32 numChannels); |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| /*---------------------------------------------------------------------------- |
| ; END |
| ----------------------------------------------------------------------------*/ |
| #endif |
| |
| |
| |
| |
| |