| /* ------------------------------------------------------------------ |
| * 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. |
| * ------------------------------------------------------------------- |
| */ |
| /* |
| |
| Pathname: imdct_fxp.h |
| |
| ------------------------------------------------------------------------------ |
| REVISION HISTORY |
| |
| Description: This extern had the incorrect length of the arrays. The true |
| lengths are 128 and 1024, not 64 and 512. |
| |
| Description: Modified interface so a vector with extended precision is |
| returned, this is a 32 bit vector whose MSB 16 bits will be |
| extracted later. Added copyright notice. |
| |
| Description: Modified function interface to accomodate the normalization |
| that now is done in this function. |
| |
| Who: Date: |
| Description: |
| |
| ------------------------------------------------------------------------------ |
| INCLUDE DESCRIPTION |
| |
| Header file for function imdct_fxp() |
| |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| /*---------------------------------------------------------------------------- |
| ; CONTINUE ONLY IF NOT ALREADY DEFINED |
| ----------------------------------------------------------------------------*/ |
| #ifndef IMDCT_FXP_H |
| #define IMDCT_FXP_H |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| /*---------------------------------------------------------------------------- |
| ; INCLUDES |
| ----------------------------------------------------------------------------*/ |
| #include "pv_audio_type_defs.h" |
| |
| /*---------------------------------------------------------------------------- |
| ; MACROS |
| ; Define module specific macros here |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; DEFINES |
| ; Include all pre-processor statements here. |
| ----------------------------------------------------------------------------*/ |
| |
| #define LONG_WINDOW_TYPE 2048 |
| #define SHORT_WINDOW_TYPE 256 |
| |
| #define ALL_ZEROS_BUFFER 31 |
| |
| /*---------------------------------------------------------------------------- |
| ; EXTERNAL VARIABLES REFERENCES |
| ; Declare variables used in this module but defined elsewhere |
| ----------------------------------------------------------------------------*/ |
| |
| extern const Int32 exp_rotation_N_256[64]; |
| extern const Int32 exp_rotation_N_2048[512]; |
| /* |
| extern const Int exp_rotation_N_256[128]; |
| extern const Int exp_rotation_N_2048[1024]; |
| */ |
| |
| /*---------------------------------------------------------------------------- |
| ; SIMPLE TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; ENUMERATED TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; STRUCTURES TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; GLOBAL FUNCTION DEFINITIONS |
| ; Function Prototype declaration |
| ----------------------------------------------------------------------------*/ |
| Int imdct_fxp( |
| Int32 data_quant[], |
| Int32 freq_2_time_buffer[], |
| const Int n, |
| Int Q_format, |
| Int32 max |
| ); |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| /*---------------------------------------------------------------------------- |
| ; END |
| ----------------------------------------------------------------------------*/ |
| #endif /* IMDCT_FXP_H */ |
