138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
/******************************************************************************
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* *
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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#ifndef IXHEAACD_BASIC_OPS_H
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#define IXHEAACD_BASIC_OPS_H
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static PLATFORM_INLINE WORD16 ixheaacd_extract16h(WORD32 var) {
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WORD16 var_out;
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var_out = (WORD16)(var >> 16);
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return (var_out);
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}
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static PLATFORM_INLINE WORD16 ixheaacd_extract16l(WORD32 var) {
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WORD16 var_out;
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var_out = (WORD16)var;
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return (var_out);
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}
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static PLATFORM_INLINE WORD32 ixheaacd_deposit16h_in32(WORD16 var) {
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WORD32 var_out;
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var_out = (WORD32)var << 16;
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return (var_out);
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}
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static PLATFORM_INLINE WORD32 ixheaacd_deposit16l_in32(WORD16 var) {
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WORD32 var_out;
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var_out = (WORD32)var;
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return (var_out);
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}
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static PLATFORM_INLINE UWORD32 ixheaacd_extu(UWORD32 a, WORD32 shift_left,
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WORD32 shift_right) {
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UWORD32 x;
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x = (UWORD32)a << shift_left;
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x = (UWORD32)x >> shift_right;
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return x;
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}
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static PLATFORM_INLINE WORD32 ixheaacd_mult32x16h_in32_shl_sat(WORD32 a,
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WORD32 b) {
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WORD32 result;
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if (a == (WORD32)0x80000000 && b == (WORD16)0x8000) {
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result = (WORD32)0x7fffffff;
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} else {
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result = ixheaacd_mult32x16in32_shl(a, ixheaacd_extract16h(b));
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}
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return (result);
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}
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static PLATFORM_INLINE WORD32 ixheaacd_div32_pos_normb(WORD32 a, WORD32 b) {
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WORD32 quotient;
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UWORD32 mantissa_nr = a;
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UWORD32 mantissa_dr = b;
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LOOPINDEX i;
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if (a == b) {
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quotient = MAX_32;
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} else {
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quotient = 0;
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for (i = 0; i < 32; i++) {
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quotient = quotient << 1;
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if (mantissa_nr >= mantissa_dr) {
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mantissa_nr = mantissa_nr - mantissa_dr;
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quotient += 1;
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}
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mantissa_nr = (UWORD32)mantissa_nr << 1;
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}
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}
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return quotient;
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}
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static PLATFORM_INLINE WORD32 ixheaacd_shr32_dir_sat_limit(WORD32 a, WORD b) {
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WORD32 out_val;
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if (b < 0) {
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out_val = ixheaacd_shl32_sat(a, -b);
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} else {
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b = ixheaacd_min32(b, 31);
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out_val = ixheaacd_shr32(a, b);
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}
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return out_val;
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}
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static PLATFORM_INLINE WORD32 ixheaacd_shl32_dir_sat_limit(WORD32 a, WORD b) {
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WORD32 out_val;
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if (b < 0) {
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b = -b;
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b = ixheaacd_min32(b, 31);
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out_val = ixheaacd_shr32(a, b);
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} else {
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out_val = ixheaacd_shl32_sat(a, b);
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}
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return out_val;
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}
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static PLATFORM_INLINE WORD64 ixheaacd_mac32x32in64_dual(WORD32 a, WORD32 b,
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WORD64 c) {
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WORD64 result;
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WORD64 temp_result;
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temp_result = (WORD64)a * (WORD64)b;
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result = ixheaacd_add64_sat(c, temp_result);
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return (result);
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}
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#endif /* IXHEAACD_BASIC_OPS_H */
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