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 Portions of this file are derived from the following 3GPP standard: 20 21 3GPP TS 26.073 22 ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 23 Available from http://www.3gpp.org 24 25 (C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 26 Permission to distribute, modify and use this file under the standard license 27 terms listed above has been obtained from the copyright holder. 28 ****************************************************************************************/ 29 /* 30 ***************************************************************************** 31 * 32 * GSM AMR speech codec Version 2.0.0 February 8, 1999 33 * 34 ***************************************************************************** 35 * 36 * File : sp_dec.h 37 * Purpose : Decoding and post filtering of one speech frame. 38 * 39 40 Description: Replaced "int" and/or "char" with OSCL defined types. 41 42 ***************************************************************************** 43 */ 44 #ifndef sp_dec_h 45 #define sp_dec_h "$Id $" 46 47 /* 48 ***************************************************************************** 49 * INCLUDE FILES 50 ***************************************************************************** 51 */ 52 #include "typedef.h" 53 #include "cnst.h" 54 #include "dec_amr.h" 55 #include "pstfilt.h" 56 #include "post_pro.h" 57 #include "mode.h" 58 59 /* 60 ***************************************************************************** 61 * DEFINITION OF DATA TYPES 62 ***************************************************************************** 63 */ 64 typedef struct 65 { 66 Decoder_amrState decoder_amrState; 67 Post_FilterState post_state; 68 Post_ProcessState postHP_state; 69 enum Mode prev_mode; 70 } Speech_Decode_FrameState; 71 72 /* 73 ***************************************************************************** 74 * DECLARATION OF PROTOTYPES 75 ***************************************************************************** 76 */ 77 78 #if defined(__cplusplus) 79 extern "C" 80 { 81 #endif 82 Word16 GSMInitDecode(void **state_data, 83 Word8 *id); 84 /* initialize one instance of the speech decoder 85 Stores pointer to filter status struct in *st. This pointer has to 86 be passed to Speech_Decode_Frame in each call. 87 returns 0 on success 88 */ 89 90 Word16 Speech_Decode_Frame_reset(void *state_data); 91 /* reset speech decoder (i.e. set state memory to zero) 92 returns 0 on success 93 */ 94 95 void GSMDecodeFrameExit(void **state_data); 96 /* de-initialize speech decoder (i.e. free status struct) 97 stores NULL in *s 98 */ 99 100 void GSMFrameDecode( 101 Speech_Decode_FrameState *st, /* io: post filter states */ 102 enum Mode mode, /* i : AMR mode */ 103 Word16 *serial, /* i : serial bit stream */ 104 enum RXFrameType frame_type, /* i : Frame type */ 105 Word16 *synth /* o : synthesis speech (postfiltered */ 106 /* output) */ 107 ); 108 /* return 0 on success 109 */ 110 #if defined(__cplusplus) 111 } 112 #endif 113 #endif 114
