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 Pathname: long_term_prediction.h 21 22 ------------------------------------------------------------------------------ 23 REVISION HISTORY 24 25 Description: Modified prototype with array size passed in per review 26 comments. 27 28 Description: Changed prototype with "weight_index" instead of "weight". 29 30 Description: Removed some passed in buffer size variables since they are 31 not being used for long window. 32 33 Description: Temporarily define LTP_Q_FORMAT for current release. 34 Need to change function prototype and pass out Q_format 35 information later. 36 37 Description: Updated function prototype to reflect the usage of a 38 circular buffer by LTP. 39 40 Description: Updated function interface with new return type 41 42 Who: Date: 43 Description: 44 45 ------------------------------------------------------------------------------ 46 INCLUDE DESCRIPTION 47 48 This file includes function prototype declaration for long_term_prediction(). 49 50 ------------------------------------------------------------------------------ 51 */ 52 53 /*---------------------------------------------------------------------------- 54 ; CONTINUE ONLY IF NOT ALREADY DEFINED 55 ----------------------------------------------------------------------------*/ 56 #ifndef LONG_TERM_PREDICTION_H 57 #define LONG_TERM_PREDICTION_H 58 59 /*---------------------------------------------------------------------------- 60 ; INCLUDES 61 ----------------------------------------------------------------------------*/ 62 #include "pv_audio_type_defs.h" 63 #include "e_window_sequence.h" 64 65 /*---------------------------------------------------------------------------- 66 ; MACROS 67 ; Define module specific macros here 68 ----------------------------------------------------------------------------*/ 69 70 /*---------------------------------------------------------------------------- 71 ; DEFINES 72 ; Include all pre-processor statements here. 73 ----------------------------------------------------------------------------*/ 74 #define LTP_Q_FORMAT (15) 75 76 /*---------------------------------------------------------------------------- 77 ; EXTERNAL VARIABLES REFERENCES 78 ; Declare variables used in this module but defined elsewhere 79 ----------------------------------------------------------------------------*/ 80 81 /*---------------------------------------------------------------------------- 82 ; SIMPLE TYPEDEF'S 83 ----------------------------------------------------------------------------*/ 84 85 /*---------------------------------------------------------------------------- 86 ; ENUMERATED TYPEDEF'S 87 ----------------------------------------------------------------------------*/ 88 89 /*---------------------------------------------------------------------------- 90 ; STRUCTURES TYPEDEF'S 91 ----------------------------------------------------------------------------*/ 92 93 /*---------------------------------------------------------------------------- 94 ; GLOBAL FUNCTION DEFINITIONS 95 ; Function Prototype declaration 96 ----------------------------------------------------------------------------*/ 97 #ifdef __cplusplus 98 extern "C" 99 { 100 #endif 101 102 103 Int long_term_prediction( 104 WINDOW_SEQUENCE win_seq, 105 const Int weight_index, 106 const Int delay[], 107 const Int16 buffer[], 108 const Int buffer_offset, 109 const Int32 time_quant[], 110 Int32 predicted_samples[], /* Q15 */ 111 const Int frame_length); 112 113 #ifdef __cplusplus 114 } 115 #endif 116 117 /*---------------------------------------------------------------------------- 118 ; END 119 ----------------------------------------------------------------------------*/ 120 #endif 121 122 123
