| /* ------------------------------------------------------------------ |
| * 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: ./include/e_BlockSwitching.h |
| |
| ------------------------------------------------------------------------------ |
| REVISION HISTORY |
| |
| Who: Date: |
| Description: |
| |
| ------------------------------------------------------------------------------ |
| INCLUDE DESCRIPTION |
| |
| enum for BlockSwitching related constants |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| /*---------------------------------------------------------------------------- |
| ; CONTINUE ONLY IF NOT ALREADY DEFINED |
| ----------------------------------------------------------------------------*/ |
| #ifndef E_BLOCK_SWITCHING_H |
| #define E_BLOCK_SWITCHING_H |
| |
| /*---------------------------------------------------------------------------- |
| ; INCLUDES |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; MACROS |
| ; Define module specific macros here |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; DEFINES |
| ; Include all pre-processor statements here. |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; EXTERNAL VARIABLES REFERENCES |
| ; Declare variables used in this module but defined elsewhere |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; SIMPLE TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; ENUMERATED TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| typedef enum |
| { |
| /* |
| * block switching |
| */ |
| LN = 2048, |
| SN = 256, |
| LN2 = LN / 2, |
| SN2 = SN / 2, |
| LN4 = LN / 4, |
| SN4 = SN / 4, |
| NSHORT = LN / SN, |
| MAX_SBK = NSHORT, |
| MAX_WIN = MAX_SBK, |
| |
| ONLY_LONG_WINDOW = 0, |
| LONG_START_WINDOW, |
| EIGHT_SHORT_WINDOW, |
| LONG_STOP_WINDOW, |
| NUM_WIN_SEQ, |
| |
| WLONG = ONLY_LONG_WINDOW, |
| WSTART, |
| WSHORT, |
| WSTOP, |
| |
| MAXBANDS = 16 * NSHORT, /* max number of scale factor bands */ |
| MAXFAC = 121, /* maximum scale factor */ |
| MIDFAC = (MAXFAC - 1) / 2, |
| SF_OFFSET = 100 /* global gain must be positive */ |
| } eBlockSwitching; |
| |
| /*---------------------------------------------------------------------------- |
| ; STRUCTURES TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; GLOBAL FUNCTION DEFINITIONS |
| ; Function Prototype declaration |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; END |
| ----------------------------------------------------------------------------*/ |
| #endif |
