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 Filename: extract_l.cpp
32 ------------------------------------------------------------------------------
33 INPUT AND OUTPUT DEFINITIONS
36 L_var1 = 32 bit long signed integer (Word32 ) whose value falls
37 in the range : 0x8000 0000 <= L_var1 <= 0x7fff ffff.
39 Local Stores/Buffers/Pointers Needed:
42 Global Stores/Buffers/Pointers Needed:
46 L_var1 = Most significant word of input (Word16)
48 Pointers and Buffers Modified:
51 Local Stores Modified:
54 Global Stores Modified:
57 ------------------------------------------------------------------------------
60 This function returns the 16 LSB of the input, L_var1.
62 ------------------------------------------------------------------------------
67 ------------------------------------------------------------------------------
70 [1] basicop2.c, ETS Version 2.0.0, February 8, 1999
72 ------------------------------------------------------------------------------
75 Word16 extract_l (Word32 L_var1)
79 var_out = (Word16) L_var1;
81 multiCounter[currCounter].extract_l++;
86 ------------------------------------------------------------------------------
90 /*----------------------------------------------------------------------------
92 ----------------------------------------------------------------------------*/
95 /*----------------------------------------------------------------------------
97 ; Define module specific macros here
98 ----------------------------------------------------------------------------*/
100 /*----------------------------------------------------------------------------
102 ; Include all pre-processor statements here. Include conditional
103 ; compile variables also.
104 ----------------------------------------------------------------------------*/
106 /*----------------------------------------------------------------------------
107 ; LOCAL FUNCTION DEFINITIONS
108 ; Function Prototype declaration
109 ----------------------------------------------------------------------------*/
111 /*----------------------------------------------------------------------------
112 ; LOCAL STORE/BUFFER/POINTER DEFINITIONS
113 ; Variable declaration - defined here and used outside this module
114 ----------------------------------------------------------------------------*/
116 /*----------------------------------------------------------------------------
117 ; EXTERNAL FUNCTION REFERENCES
118 ; Declare functions defined elsewhere and referenced in this module
119 ----------------------------------------------------------------------------*/
121 /*----------------------------------------------------------------------------
122 ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
123 ; Declare variables used in this module but defined elsewhere
124 ----------------------------------------------------------------------------*/
126 /*----------------------------------------------------------------------------
128 ----------------------------------------------------------------------------*/
129 Word16 extract_l(Word32 L_var1)
131 /*----------------------------------------------------------------------------
132 ; Define all local variables
133 ----------------------------------------------------------------------------*/
135 /*----------------------------------------------------------------------------
137 ----------------------------------------------------------------------------*/
139 /*----------------------------------------------------------------------------
140 ; Return nothing or data or data pointer
141 ----------------------------------------------------------------------------*/
142 return ((Word16) L_var1);