ref: 1e22a4b7e9fa23997b45d6b455051a3fa35900b2
dir: /silk/macros.h/
/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
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modification, (subject to the limitations in the disclaimer below)
are permitted provided that the following conditions are met:
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this list of conditions and the following disclaimer.
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documentation and/or other materials provided with the distribution.
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this software without specific prior written permission.
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BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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***********************************************************************/
#ifndef _SILK_API_C_H_
#define _SILK_API_C_H_
/* This is an inline header file for general platform. */
/* (a32 * (opus_int32)((opus_int16)(b32))) >> 16 output have to be 32bit int */
#define silk_SMULWB(a32, b32) ((((a32) >> 16) * (opus_int32)((opus_int16)(b32))) + ((((a32) & 0x0000FFFF) * (opus_int32)((opus_int16)(b32))) >> 16))
/* a32 + (b32 * (opus_int32)((opus_int16)(c32))) >> 16 output have to be 32bit int */
#define silk_SMLAWB(a32, b32, c32) ((a32) + ((((b32) >> 16) * (opus_int32)((opus_int16)(c32))) + ((((b32) & 0x0000FFFF) * (opus_int32)((opus_int16)(c32))) >> 16)))
/* (a32 * (b32 >> 16)) >> 16 */
#define silk_SMULWT(a32, b32) (((a32) >> 16) * ((b32) >> 16) + ((((a32) & 0x0000FFFF) * ((b32) >> 16)) >> 16))
/* a32 + (b32 * (c32 >> 16)) >> 16 */
#define silk_SMLAWT(a32, b32, c32) ((a32) + (((b32) >> 16) * ((c32) >> 16)) + ((((b32) & 0x0000FFFF) * ((c32) >> 16)) >> 16))
/* (opus_int32)((opus_int16)(a3))) * (opus_int32)((opus_int16)(b32)) output have to be 32bit int */
#define silk_SMULBB(a32, b32) ((opus_int32)((opus_int16)(a32)) * (opus_int32)((opus_int16)(b32)))
/* a32 + (opus_int32)((opus_int16)(b32)) * (opus_int32)((opus_int16)(c32)) output have to be 32bit int */
#define silk_SMLABB(a32, b32, c32) ((a32) + ((opus_int32)((opus_int16)(b32))) * (opus_int32)((opus_int16)(c32)))
/* (opus_int32)((opus_int16)(a32)) * (b32 >> 16) */
#define silk_SMULBT(a32, b32) ((opus_int32)((opus_int16)(a32)) * ((b32) >> 16))
/* a32 + (opus_int32)((opus_int16)(b32)) * (c32 >> 16) */
#define silk_SMLABT(a32, b32, c32) ((a32) + ((opus_int32)((opus_int16)(b32))) * ((c32) >> 16))
/* a64 + (b32 * c32) */
#define silk_SMLAL(a64, b32, c32) (silk_ADD64((a64), ((opus_int64)(b32) * (opus_int64)(c32))))
/* (a32 * b32) >> 16 */
#define silk_SMULWW(a32, b32) silk_MLA(silk_SMULWB((a32), (b32)), (a32), silk_RSHIFT_ROUND((b32), 16))
/* a32 + ((b32 * c32) >> 16) */
#define silk_SMLAWW(a32, b32, c32) silk_MLA(silk_SMLAWB((a32), (b32), (c32)), (b32), silk_RSHIFT_ROUND((c32), 16))
/* add/subtract with output saturated */
#define silk_ADD_SAT32(a, b) ((((a) + (b)) & 0x80000000) == 0 ? \
((((a) & (b)) & 0x80000000) != 0 ? silk_int32_MIN : (a)+(b)) : \
((((a) | (b)) & 0x80000000) == 0 ? silk_int32_MAX : (a)+(b)) )
#define silk_SUB_SAT32(a, b) ((((a)-(b)) & 0x80000000) == 0 ? \
(( (a) & ((b)^0x80000000) & 0x80000000) ? silk_int32_MIN : (a)-(b)) : \
((((a)^0x80000000) & (b) & 0x80000000) ? silk_int32_MAX : (a)-(b)) )
static inline opus_int32 silk_CLZ16(opus_int16 in16)
{
opus_int32 out32 = 0;
if( in16 == 0 ) {
return 16;
}
/* test nibbles */
if( in16 & 0xFF00 ) {
if( in16 & 0xF000 ) {
in16 >>= 12;
} else {
out32 += 4;
in16 >>= 8;
}
} else {
if( in16 & 0xFFF0 ) {
out32 += 8;
in16 >>= 4;
} else {
out32 += 12;
}
}
/* test bits and return */
if( in16 & 0xC ) {
if( in16 & 0x8 )
return out32 + 0;
else
return out32 + 1;
} else {
if( in16 & 0xE )
return out32 + 2;
else
return out32 + 3;
}
}
static inline opus_int32 silk_CLZ32(opus_int32 in32)
{
/* test highest 16 bits and convert to opus_int16 */
if( in32 & 0xFFFF0000 ) {
return silk_CLZ16((opus_int16)(in32 >> 16));
} else {
return silk_CLZ16((opus_int16)in32) + 16;
}
}
/* Row based */
#define matrix_ptr(Matrix_base_adr, row, column, N) *(Matrix_base_adr + ((row)*(N)+(column)))
#define matrix_adr(Matrix_base_adr, row, column, N) (Matrix_base_adr + ((row)*(N)+(column)))
/* Column based */
#ifndef matrix_c_ptr
# define matrix_c_ptr(Matrix_base_adr, row, column, M) *(Matrix_base_adr + ((row)+(M)*(column)))
#endif
#define matrix_c_adr(Matrix_base_adr, row, column, M) (Matrix_base_adr + ((row)+(M)*(column)))
#endif /* _SILK_API_C_H_ */