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/* ------------------------------------------------------------------
* 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
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