frameworks/base/media/libstagefright/codecs/mp3dec/src/pvmp3_mdct_18.h

   1 /* ------------------------------------------------------------------
   2  * Copyright (C) 1998-2009 PacketVideo
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
  13  * express or implied.
  14  * See the License for the specific language governing permissions
  15  * and limitations under the License.
  16  * -------------------------------------------------------------------
  17  */
  18 /*
  19 ------------------------------------------------------------------------------
  20
  21    PacketVideo Corp.
  22    MP3 Decoder Library
  23
  24    Pathname: ./include/pvmp3_mdct_18.h
  25
  26      Date: 09/21/2007
  27
  28 ------------------------------------------------------------------------------
  29  REVISION HISTORY
  30
  31
  32  Description:
  33
  34 ------------------------------------------------------------------------------
  35  INCLUDE DESCRIPTION
  36
  37  This include file defines function mdct_18, dct9, mdct_6 and dct_6
  38
  39 ------------------------------------------------------------------------------
  40 */
  41
  42 /*----------------------------------------------------------------------------
  43 ; CONTINUE ONLY IF NOT ALREADY DEFINED
  44 ----------------------------------------------------------------------------*/
  45 #ifndef  MDCT_18_H
  46 #define  MDCT_18_H
  47
  48 /*----------------------------------------------------------------------------
  49 ; INCLUDES
  50 ----------------------------------------------------------------------------*/
  51 #include "pvmp3_audio_type_defs.h"
  52
  53 /*----------------------------------------------------------------------------
  54 ; MACROS
  55 ; Define module specific macros here
  56 ----------------------------------------------------------------------------*/
  57
  58 /*----------------------------------------------------------------------------
  59 ; DEFINES
  60 ; Include all pre-processor statements here.
  61 ----------------------------------------------------------------------------*/
  62 #define Qfmt(a)    (Int32)(a*((Int32)1<<28) )
  63 #define Qfmt1(a)   (Int32)(a*((Int32)0x7FFFFFFF))
  64 #define Qfmt2(a)   (Int32)(a*((Int32)1<<27))
  65
  66 /*----------------------------------------------------------------------------
  67 ; EXTERNAL VARIABLES REFERENCES
  68 ; Declare variables used in this module but defined elsewhere
  69 ----------------------------------------------------------------------------*/
  70
  71 /*----------------------------------------------------------------------------
  72 ; SIMPLE TYPEDEF'S
  73 ----------------------------------------------------------------------------*/
  74
  75 /*----------------------------------------------------------------------------
  76 ; ENUMERATED TYPEDEF'S
  77 ----------------------------------------------------------------------------*/
  78
  79 /*----------------------------------------------------------------------------
  80 ; STRUCTURES TYPEDEF'S
  81 ----------------------------------------------------------------------------*/
  82
  83 /*----------------------------------------------------------------------------
  84 ; GLOBAL FUNCTION DEFINITIONS
  85 ; Function Prototype declaration
  86 ----------------------------------------------------------------------------*/
  87 #ifdef __cplusplus
  88 extern "C"
  89 {
  90 #endif
  91
  92     void pvmp3_mdct_18(int32 vec[], int32 *history, const int32 *window);
  93
  94     void pvmp3_dct_9(int32 vec[]);
  95
  96     void pvmp3_mdct_6(int32 vec[], int32 *overlap);
  97
  98     void pvmp3_dct_6(int32 vec[]);
  99
 100 #ifdef __cplusplus
 101 }
 102 #endif
 103
 104 /*----------------------------------------------------------------------------
 105 ; END
 106 ----------------------------------------------------------------------------*/
 107 #endif
 108
 109