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 26.173
22 ANSI-C code for the Adaptive Multi-Rate - Wideband (AMR-WB) speech codec
23 Available from http://www.3gpp.org
24
25 (C) 2007, 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
33
34 Pathname: ./c/include/normalize_amr_wb.h
35
36 Date: 12/10/2004
37
38 ------------------------------------------------------------------------------
39 REVISION HISTORY
40
41 Description:
42 ------------------------------------------------------------------------------
43 INCLUDE DESCRIPTION
44
45 ------------------------------------------------------------------------------
46 */
47
48 #ifndef NORMALIZE_AMR_WB_H
49 #define NORMALIZE_AMR_WB_H
50
51
52 /*----------------------------------------------------------------------------
53 ; INCLUDES
54 ----------------------------------------------------------------------------*/
55
56 #include "pv_amr_wb_type_defs.h"
57
58 /*----------------------------------------------------------------------------
59 ; MACROS
60 ; Define module specific macros here
61 ----------------------------------------------------------------------------*/
62
63 /*----------------------------------------------------------------------------
64 ; EXTERNAL VARIABLES REFERENCES
65 ----------------------------------------------------------------------------*/
66
67 /*----------------------------------------------------------------------------
68 ; DEFINES AND SIMPLE TYPEDEF'S
69 ----------------------------------------------------------------------------*/
70
71 #if defined(PV_ARM_V5)
72
normalize_amr_wb(int32 x)73 __inline int16 normalize_amr_wb(int32 x)
74 {
75 int32 y;
76 __asm
77 {
78 clz y, x;
79 sub y, y, #1
80 }
81 return (y);
82 }
83
84
85 #elif defined(PV_ARM_GCC_V5)
86
87
normalize_amr_wb(int32 x)88 __inline int16 normalize_amr_wb(int32 x)
89 {
90 register int32 y;
91 register int32 ra = x;
92
93
94 asm volatile(
95 "clz %0, %1\n\t"
96 "sub %0, %0, #1"
97 : "=&r*i"(y)
98 : "r"(ra));
99 return (y);
100
101 }
102
103 #else
104
105 #ifdef __cplusplus
106 extern "C"
107 {
108 #endif
109
110 int16 normalize_amr_wb(int32 x);
111
112 #ifdef __cplusplus
113 }
114 #endif
115
116 #endif
117
118
119
120 #endif /* PV_NORMALIZE_H */
121