| @/****************************************************************************** |
| @ * |
| @ * Copyright (C) 2018 The Android Open Source Project |
| @ * |
| @ * Licensed under the Apache License, Version 2.0 (the "License"); |
| @ * you may not use this file except in compliance with the License. |
| @ * You may obtain a copy of the License at: |
| @ * |
| @ * http://www.apache.org/licenses/LICENSE-2.0 |
| @ * |
| @ * Unless required by applicable law or agreed to in writing, software |
| @ * distributed under the License is distributed on an "AS IS" BASIS, |
| @ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| @ * See the License for the specific language governing permissions and |
| @ * limitations under the License. |
| @ * |
| @ ***************************************************************************** |
| @ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore |
| @*/ |
| |
| |
| .text |
| .p2align 2 |
| .global ixheaacd_adjust_scale_armv7 |
| ixheaacd_adjust_scale_armv7: |
| STMFD SP!, {R4-R11, R14} |
| LDR R4, [SP, #44] |
| LDR R5, [SP, #36] |
| LDR R6, [SP, #40] |
| MOVS R4, R4 |
| BEQ ENDRESSCALE |
| SUBS R3, R3, R2 |
| BLE ENDRESSCALE |
| SUBS R6, R6, R5 |
| BLE ENDRESSCALE |
| |
| ADD R9, R0, R5, LSL#2 |
| LDR R10, [R9], #4 |
| |
| CMP R4, #31 |
| MOVGT R4, #31 |
| CMP R4, #-31 |
| MOVLT R4, #-31 |
| |
| |
| LDR R8, [SP, #48] |
| MOVS R8, R8 |
| BEQ ELIF1 |
| |
| |
| MOVS R4, R4 |
| BLE ELIF2_1 |
| |
| LOOP1: |
| ADD R10, R10, R2, LSL #2 |
| MOV R7, R3 |
| |
| INNLOOP1: |
| LDR R11, [R10] |
| SUBS R7, R7 , #2 |
| LDRGE R5, [R10, #4] |
| |
| MOV R11, R11, LSL R4 |
| STR R11, [R10], #4 |
| |
| MOVGE R5, R5, LSL R4 |
| STRGE R5, [R10], #4 |
| |
| BGT INNLOOP1 |
| |
| LDR R10, [R9], #4 |
| SUBS R6, R6, #1 |
| BGT LOOP1 |
| |
| B ENDRESSCALE |
| |
| ELIF2_1: |
| RSB R4, R4, #0 |
| |
| LOOP2: |
| ADD R10, R10, R2, LSL #2 |
| MOV R7, R3 |
| INNLOOP2: |
| LDR R11, [R10] |
| SUBS R7, R7 , #2 |
| LDRGE R5, [R10, #4] |
| |
| MOV R11, R11, ASR R4 |
| STR R11, [R10], #4 |
| |
| MOVGE R5, R5, ASR R4 |
| STRGE R5, [R10], #4 |
| |
| BGT INNLOOP2 |
| |
| LDR R10, [R9], #4 |
| SUBS R6, R6, #1 |
| BGT LOOP2 |
| |
| |
| |
| |
| B ENDRESSCALE |
| |
| ELIF1: |
| ADD R5, R1, R5, LSL#2 |
| |
| MOVS R4, R4 |
| BLE ELIF2_2 |
| LOOP3: |
| LDR R8, [R5], #4 |
| ADD R10, R10, R2, LSL #2 |
| ADD R8, R8, R2, LSL #2 |
| BICS R7, R3, #1 |
| BEQ COUNTODD1 |
| INNLOOP3: |
| LDR R11, [R10] |
| LDR R1, [R8] |
| MOV R11, R11, LSL R4 |
| MOV R1, R1, LSL R4 |
| STR R11, [R10], #4 |
| STR R1, [R8], #4 |
| |
| LDR R11, [R10] |
| LDR R1, [R8] |
| MOV R11, R11, LSL R4 |
| MOV R1, R1, LSL R4 |
| STR R11, [R10], #4 |
| STR R1, [R8], #4 |
| |
| SUBS R7, R7 , #2 |
| BGT INNLOOP3 |
| COUNTODD1: |
| BIC R7, R3, #1 |
| CMP R7, R3 |
| BEQ INNLOOP3END |
| |
| LDR R11, [R10] |
| LDR R1, [R8] |
| MOV R11, R11, LSL R4 |
| MOV R1, R1, LSL R4 |
| STR R11, [R10], #4 |
| STR R1, [R8], #4 |
| |
| |
| |
| INNLOOP3END: |
| |
| |
| LDR R10, [R9], #4 |
| SUBS R6, R6, #1 |
| BGT LOOP3 |
| B ENDRESSCALE |
| |
| ELIF2_2: |
| RSB R4, R4, #0 |
| |
| LOOP4: |
| LDR R8, [R5], #4 |
| ADD R10, R10, R2, LSL #2 |
| ADD R8, R8, R2, LSL #2 |
| BICS R7, R3, #1 |
| BEQ COUNTODD2 |
| INNLOOP4: |
| LDR R11, [R10] |
| LDR R1, [R8] |
| MOV R11, R11, ASR R4 |
| MOV R1, R1, ASR R4 |
| STR R11, [R10], #4 |
| STR R1, [R8], #4 |
| |
| LDR R11, [R10] |
| LDR R1, [R8] |
| MOV R11, R11, ASR R4 |
| MOV R1, R1, ASR R4 |
| STR R11, [R10], #4 |
| STR R1, [R8], #4 |
| |
| |
| SUBS R7, R7 , #2 |
| BGT INNLOOP4 |
| COUNTODD2: |
| BIC R7, R3, #1 |
| CMP R7, R3 |
| BEQ INNLOOP4END |
| |
| LDR R11, [R10] |
| LDR R1, [R8] |
| MOV R11, R11, ASR R4 |
| MOV R1, R1, ASR R4 |
| STR R11, [R10], #4 |
| STR R1, [R8], #4 |
| |
| |
| INNLOOP4END: |
| LDR R10, [R9], #4 |
| SUBS R6, R6, #1 |
| BGT LOOP4 |
| |
| |
| ENDRESSCALE: |
| LDMFD sp!, {r4-r11, r15} |
| |
| |
| |