1 /* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
18 /****************************************************************************************
19 Portions of this file are derived from the following 3GPP standard:
22 ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
23 Available from http://www.3gpp.org
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 ****************************************************************************************/
30 ------------------------------------------------------------------------------
36 ------------------------------------------------------------------------------
40 Purpose : Encoding of fractional pitch lag with 1/3 resolution.
42 ------------------------------------------------------------------------------
47 #define enc_lag3_h "$Id $"
49 /*----------------------------------------------------------------------------
51 ----------------------------------------------------------------------------*/
54 /*--------------------------------------------------------------------------*/
60 /*----------------------------------------------------------------------------
62 ; [Define module specific macros here]
63 ----------------------------------------------------------------------------*/
65 /*----------------------------------------------------------------------------
67 ; [Include all pre-processor statements here.]
68 ----------------------------------------------------------------------------*/
70 /*----------------------------------------------------------------------------
71 ; EXTERNAL VARIABLES REFERENCES
72 ; [Declare variables used in this module but defined elsewhere]
73 ----------------------------------------------------------------------------*/
75 /*----------------------------------------------------------------------------
77 ----------------------------------------------------------------------------*/
79 /*----------------------------------------------------------------------------
80 ; ENUMERATED TYPEDEF'S
81 ----------------------------------------------------------------------------*/
83 /*----------------------------------------------------------------------------
84 ; STRUCTURES TYPEDEF'S
85 ----------------------------------------------------------------------------*/
91 /*----------------------------------------------------------------------------
92 ; GLOBAL FUNCTION DEFINITIONS
93 ; [List function prototypes here]
94 ----------------------------------------------------------------------------*/
96 Enc_lag3( /* o : Return index of encoding */
97 Word16 T0, /* i : Pitch delay */
98 Word16 T0_frac, /* i : Fractional pitch delay */
99 Word16 T0_prev, /* i : Integer pitch delay of last subframe */
100 Word16 T0_min, /* i : minimum of search range */
101 Word16 T0_max, /* i : maximum of search range */
102 Word16 delta_flag, /* i : Flag for 1st (or 3rd) subframe */
103 Word16 flag4, /* i : Flag for encoding with 4 bits */
114 #endif /* _ENC_LAG3_H_ */