| /* ------------------------------------------------------------------ |
| * 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: s_TNSfilt.h |
| |
| ------------------------------------------------------------------------------ |
| REVISION HISTORY |
| |
| Description: Added lpc, start, & size, so the data from |
| tns_inv_subblock can be shared with tns_decode_subblock. |
| |
| Description: Removed lpc to save 2KB of memory (on 32-bit machines.) |
| This change requires tns_decode_coef.c to perform calculations in place. |
| |
| Description: Removed start & size. start_band and stop_band can simply |
| take on a new meaning after this function. (coef index, rather than |
| scalefactor band index.) |
| |
| Description: Had to add "start_coef" and "stop_coef" in order to preserve |
| values "start_band" and "stop_band." This required a change to |
| tns_setup_filter.c also. |
| |
| Description: Had to add element "q_lpc" to store the q-format of the lpc |
| coefficients passed via "coef." |
| |
| Description: Moved lpc_coef array up to the s_TNS_frame_info.h structure. |
| |
| Description: |
| (1) Modified to include the lines... |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| (2) Updated the copyright header. |
| |
| Who: Date: |
| Description: |
| ------------------------------------------------------------------------------ |
| INCLUDE DESCRIPTION |
| |
| This include file defines the structure, s_TNSfilt |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| /*---------------------------------------------------------------------------- |
| ; CONTINUE ONLY IF NOT ALREADY DEFINED |
| ----------------------------------------------------------------------------*/ |
| #ifndef S_TNSFILT_H |
| #define S_TNSFILT_H |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| /*---------------------------------------------------------------------------- |
| ; INCLUDES |
| ----------------------------------------------------------------------------*/ |
| #include "pv_audio_type_defs.h" |
| #include "e_tns_const.h" |
| |
| /*---------------------------------------------------------------------------- |
| ; 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 |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; STRUCTURES TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| typedef struct |
| { |
| Int start_band; |
| Int stop_band; |
| Int start_coef; |
| Int stop_coef; |
| UInt order; |
| Int direction; |
| Int q_lpc; |
| |
| } TNSfilt; |
| |
| /*---------------------------------------------------------------------------- |
| ; GLOBAL FUNCTION DEFINITIONS |
| ; Function Prototype declaration |
| ----------------------------------------------------------------------------*/ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* S_TNSFILT_H */ |
