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    PacketVideo Corp.
21    MP3 Decoder Library
22 
23    Pathname: ./cpp/include/pv_mp3dec_fxd_op_c_equivalent.h
24 
25      Date: 12/06/2005
26 
27 ------------------------------------------------------------------------------
28  REVISION HISTORY
29 
30  Description:
31 ------------------------------------------------------------------------------
32  INCLUDE DESCRIPTION
33 
34 ------------------------------------------------------------------------------
35 */
36 
37 #ifndef PV_MP3DEC_FXD_OP_C_EQUIVALENT
38 #define PV_MP3DEC_FXD_OP_C_EQUIVALENT
39 
40 
41 #ifdef __cplusplus
42 extern "C"
43 {
44 #endif
45 
46 #include "pvmp3_audio_type_defs.h"
47 #define Qfmt_31(a)   (Int32)((float)(a)*(float)0x7FFFFFFF)
48 
49 #define Qfmt15(x)   (Int16)((x)*((Int32)1<<15) + ((x)>=0?0.5F:-0.5F))
50 
51 
52 
53     __attribute__((no_sanitize("integer")))
pv_abs(int32 a)54     __inline int32 pv_abs(int32 a)
55     {
56         int32 b = (a < 0) ? -a : a;
57         return b;
58     }
59 
60 
61 
62 
63     __attribute__((no_sanitize("integer")))
fxp_mul32_Q30(const Int32 a,const Int32 b)64     __inline Int32 fxp_mul32_Q30(const Int32 a, const Int32 b)
65     {
66         return (Int32)(((int64)(a) * b) >> 30);
67     }
68 
69     __attribute__((no_sanitize("integer")))
fxp_mac32_Q30(const Int32 a,const Int32 b,Int32 L_add)70     __inline Int32 fxp_mac32_Q30(const Int32 a, const Int32 b, Int32 L_add)
71     {
72         return (L_add + (Int32)(((int64)(a) * b) >> 30));
73     }
74 
75     __attribute__((no_sanitize("integer")))
fxp_mul32_Q32(const Int32 a,const Int32 b)76     __inline Int32 fxp_mul32_Q32(const Int32 a, const Int32 b)
77     {
78         return (Int32)(((int64)(a) * b) >> 32);
79     }
80 
81 
82     __attribute__((no_sanitize("integer")))
fxp_mul32_Q28(const Int32 a,const Int32 b)83     __inline Int32 fxp_mul32_Q28(const Int32 a, const Int32 b)
84     {
85         return (Int32)(((int64)(a) * b) >> 28);
86     }
87 
88     __attribute__((no_sanitize("integer")))
fxp_mul32_Q27(const Int32 a,const Int32 b)89     __inline Int32 fxp_mul32_Q27(const Int32 a, const Int32 b)
90     {
91         return (Int32)(((int64)(a) * b) >> 27);
92     }
93 
94     __attribute__((no_sanitize("integer")))
fxp_mul32_Q26(const Int32 a,const Int32 b)95     __inline Int32 fxp_mul32_Q26(const Int32 a, const Int32 b)
96     {
97         return (Int32)(((int64)(a) * b) >> 26);
98     }
99 
100 
101     __attribute__((no_sanitize("integer")))
fxp_mac32_Q32(Int32 L_add,const Int32 a,const Int32 b)102     __inline Int32 fxp_mac32_Q32(Int32 L_add, const Int32 a, const Int32 b)
103     {
104         return (L_add + (Int32)(((int64)(a) * b) >> 32));
105     }
106 
107     __attribute__((no_sanitize("integer")))
fxp_msb32_Q32(Int32 L_sub,const Int32 a,const Int32 b)108     __inline Int32 fxp_msb32_Q32(Int32 L_sub, const Int32 a, const Int32 b)
109     {
110         return (L_sub - ((Int32)(((int64)(a) * b) >> 32)));
111     }
112 
113 
114     __attribute__((no_sanitize("integer")))
fxp_mul32_Q29(const Int32 a,const Int32 b)115     __inline Int32 fxp_mul32_Q29(const Int32 a, const Int32 b)
116     {
117         return (Int32)(((int64)(a) * b) >> 29);
118     }
119 
120 
121 
122 
123 
124 
125 #ifdef __cplusplus
126 }
127 #endif
128 
129 
130 #endif   /*  PV_MP3DEC_FXD_OP_C_EQUIVALENT  */
131 
132 
133 
134