1 /*********************************************************************** 2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. 3 Redistribution and use in source and binary forms, with or without 4 modification, are permitted provided that the following conditions 5 are met: 6 - Redistributions of source code must retain the above copyright notice, 7 this list of conditions and the following disclaimer. 8 - Redistributions in binary form must reproduce the above copyright 9 notice, this list of conditions and the following disclaimer in the 10 documentation and/or other materials provided with the distribution. 11 - Neither the name of Internet Society, IETF or IETF Trust, nor the 12 names of specific contributors, may be used to endorse or promote 13 products derived from this software without specific prior written 14 permission. 15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS 16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 POSSIBILITY OF SUCH DAMAGE. 26 ***********************************************************************/ 27 28 #ifndef SILK_MACROS_H 29 #define SILK_MACROS_H 30 31 #ifdef HAVE_CONFIG_H 32 #include "config.h" 33 #endif 34 35 /* This is an inline header file for general platform. */ 36 37 /* (a32 * (opus_int32)((opus_int16)(b32))) >> 16 output have to be 32bit int */ 38 #define silk_SMULWB(a32, b32) ((((a32) >> 16) * (opus_int32)((opus_int16)(b32))) + ((((a32) & 0x0000FFFF) * (opus_int32)((opus_int16)(b32))) >> 16)) 39 40 /* a32 + (b32 * (opus_int32)((opus_int16)(c32))) >> 16 output have to be 32bit int */ 41 #define silk_SMLAWB(a32, b32, c32) ((a32) + ((((b32) >> 16) * (opus_int32)((opus_int16)(c32))) + ((((b32) & 0x0000FFFF) * (opus_int32)((opus_int16)(c32))) >> 16))) 42 43 /* (a32 * (b32 >> 16)) >> 16 */ 44 #define silk_SMULWT(a32, b32) (((a32) >> 16) * ((b32) >> 16) + ((((a32) & 0x0000FFFF) * ((b32) >> 16)) >> 16)) 45 46 /* a32 + (b32 * (c32 >> 16)) >> 16 */ 47 #define silk_SMLAWT(a32, b32, c32) ((a32) + (((b32) >> 16) * ((c32) >> 16)) + ((((b32) & 0x0000FFFF) * ((c32) >> 16)) >> 16)) 48 49 /* (opus_int32)((opus_int16)(a3))) * (opus_int32)((opus_int16)(b32)) output have to be 32bit int */ 50 #define silk_SMULBB(a32, b32) ((opus_int32)((opus_int16)(a32)) * (opus_int32)((opus_int16)(b32))) 51 52 /* a32 + (opus_int32)((opus_int16)(b32)) * (opus_int32)((opus_int16)(c32)) output have to be 32bit int */ 53 #define silk_SMLABB(a32, b32, c32) ((a32) + ((opus_int32)((opus_int16)(b32))) * (opus_int32)((opus_int16)(c32))) 54 55 /* (opus_int32)((opus_int16)(a32)) * (b32 >> 16) */ 56 #define silk_SMULBT(a32, b32) ((opus_int32)((opus_int16)(a32)) * ((b32) >> 16)) 57 58 /* a32 + (opus_int32)((opus_int16)(b32)) * (c32 >> 16) */ 59 #define silk_SMLABT(a32, b32, c32) ((a32) + ((opus_int32)((opus_int16)(b32))) * ((c32) >> 16)) 60 61 /* a64 + (b32 * c32) */ 62 #define silk_SMLAL(a64, b32, c32) (silk_ADD64((a64), ((opus_int64)(b32) * (opus_int64)(c32)))) 63 64 /* (a32 * b32) >> 16 */ 65 #define silk_SMULWW(a32, b32) silk_MLA(silk_SMULWB((a32), (b32)), (a32), silk_RSHIFT_ROUND((b32), 16)) 66 67 /* a32 + ((b32 * c32) >> 16) */ 68 #define silk_SMLAWW(a32, b32, c32) silk_MLA(silk_SMLAWB((a32), (b32), (c32)), (b32), silk_RSHIFT_ROUND((c32), 16)) 69 70 /* add/subtract with output saturated */ 71 #define silk_ADD_SAT32(a, b) ((((opus_uint32)(a) + (opus_uint32)(b)) & 0x80000000) == 0 ? \ 72 ((((a) & (b)) & 0x80000000) != 0 ? silk_int32_MIN : (a)+(b)) : \ 73 ((((a) | (b)) & 0x80000000) == 0 ? silk_int32_MAX : (a)+(b)) ) 74 75 #define silk_SUB_SAT32(a, b) ((((opus_uint32)(a)-(opus_uint32)(b)) & 0x80000000) == 0 ? \ 76 (( (a) & ((b)^0x80000000) & 0x80000000) ? silk_int32_MIN : (a)-(b)) : \ 77 ((((a)^0x80000000) & (b) & 0x80000000) ? silk_int32_MAX : (a)-(b)) ) 78 79 static inline opus_int32 silk_CLZ16(opus_int16 in16) 80 { 81 opus_int32 out32 = 0; 82 if( in16 == 0 ) { 83 return 16; 84 } 85 /* test nibbles */ 86 if( in16 & 0xFF00 ) { 87 if( in16 & 0xF000 ) { 88 in16 >>= 12; 89 } else { 90 out32 += 4; 91 in16 >>= 8; 92 } 93 } else { 94 if( in16 & 0xFFF0 ) { 95 out32 += 8; 96 in16 >>= 4; 97 } else { 98 out32 += 12; 99 } 100 } 101 /* test bits and return */ 102 if( in16 & 0xC ) { 103 if( in16 & 0x8 ) 104 return out32 + 0; 105 else 106 return out32 + 1; 107 } else { 108 if( in16 & 0xE ) 109 return out32 + 2; 110 else 111 return out32 + 3; 112 } 113 } 114 115 static inline opus_int32 silk_CLZ32(opus_int32 in32) 116 { 117 /* test highest 16 bits and convert to opus_int16 */ 118 if( in32 & 0xFFFF0000 ) { 119 return silk_CLZ16((opus_int16)(in32 >> 16)); 120 } else { 121 return silk_CLZ16((opus_int16)in32) + 16; 122 } 123 } 124 125 /* Row based */ 126 #define matrix_ptr(Matrix_base_adr, row, column, N) *(Matrix_base_adr + ((row)*(N)+(column))) 127 #define matrix_adr(Matrix_base_adr, row, column, N) (Matrix_base_adr + ((row)*(N)+(column))) 128 129 /* Column based */ 130 #ifndef matrix_c_ptr 131 # define matrix_c_ptr(Matrix_base_adr, row, column, M) *(Matrix_base_adr + ((row)+(M)*(column))) 132 #endif 133 134 #endif /* SILK_MACROS_H */ 135 136
