1 @/****************************************************************************** 2 @ * 3 @ * Copyright (C) 2018 The Android Open Source Project 4 @ * 5 @ * Licensed under the Apache License, Version 2.0 (the "License"); 6 @ * you may not use this file except in compliance with the License. 7 @ * You may obtain a copy of the License at: 8 @ * 9 @ * http://www.apache.org/licenses/LICENSE-2.0 10 @ * 11 @ * Unless required by applicable law or agreed to in writing, software 12 @ * distributed under the License is distributed on an "AS IS" BASIS, 13 @ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 @ * See the License for the specific language governing permissions and 15 @ * limitations under the License. 16 @ * 17 @ ***************************************************************************** 18 @ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 @*/ 20 21 22 .text 23 .p2align 2 24 .global ixheaacd_conv_ergtoamplitude_armv7 25 ixheaacd_conv_ergtoamplitude_armv7: 26 27 STMFD sp!, {r4-r12, r14} 28 29 LDR R5, [SP, #44] 30 LDR R4, [SP, #40] 31 MOVW R14, #0x1FF 32 MOVW R10, #0x5A82 33 34 LOOP1: 35 36 LDRSH R6, [R2], #2 37 LDRSH R7, [R2], #2 38 MOV R12, #0 39 MOV R9, #-16 40 MOVS R6, R6 41 BLE ENDIF1_1 42 CLZ R8, R6 43 SUB R8, R8, #17 44 SUB R7, R7, R8 45 MOV R11, R6, LSL R8 46 47 MOV R11, R11, ASR #5 48 ANDS R11, R11, R14 49 50 BIC R11, R11, #1 51 LDRH R12, [R11, R5] 52 53 TST R7, #1 54 ADDNE R7, R7, #3 55 SMULWBNE R12, R12, R10 56 57 58 MOV R9, R7, ASR #1 59 ENDIF1_1: 60 STRH R12, [R2, #-4] 61 STRH R9, [R2, #-2] 62 63 64 LDRSH R6, [R3], #2 65 LDRSH R7, [R3], #2 66 MOV R8, #0 67 MOV R9, #-16 68 MOVS R6, R6 69 BLE ENDIF1_2 70 CLZ R8, R6 71 SUB R8, R8, #17 72 SUB R7, R7, R8 73 MOV R11, R6, LSL R8 74 MOV R11, R11, ASR #5 75 ANDS R11, R11, R14 76 77 BIC R11, R11, #1 78 LDRH R8, [R11, R5] 79 TST R7, #1 80 ADDNE R7, R7, #3 81 82 SMULWBNE R8, R8, R10 83 84 85 MOV R9, R7, ASR #1 86 ENDIF1_2: 87 STRH R8, [R3, #-4] 88 STRH R9, [R3, #-2] 89 90 91 92 LDRSH R6, [R4], #2 93 LDRSH R7, [R4], #2 94 MOV R8, #0 95 MOV R9, #-16 96 MOVS R6, R6 97 BLE ENDIF1_3 98 CLZ R8, R6 99 SUB R8, R8, #17 100 SUB R7, R7, R8 101 MOV R11, R6, LSL R8 102 MOV R11, R11, ASR #5 103 ANDS R11, R11, R14 104 105 BIC R11, R11, #1 106 LDRH R8, [R11, R5] 107 TST R7, #1 108 ADDNE R7, R7, #3 109 110 SMULWBNE R8, R8, R10 111 112 113 MOV R9, R7, ASR #1 114 ENDIF1_3: 115 STRH R9, [R4, #-2] 116 117 SUB R6, R1, R9 118 SUBS R6, R6, #4 119 120 RSBLE R6, R6, #0 121 MOVGT R8, R8, ASR R6 122 MOVLE R8, R8, LSL R6 123 STRH R8, [R4, #-4] 124 125 SUBS R0, R0, #1 126 BGT LOOP1 127 LDMFD sp!, {r4-r12, r15} 128 129 130 131 132 133
