| @/****************************************************************************** |
| @ * |
| @ * 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_tns_ar_filter_armv7 |
| |
| ixheaacd_tns_ar_filter_armv7: |
| |
| STMFD r13! , {r4 - r12, r14} |
| SUB sp, sp, #4 |
| LDR r4, [sp, #44] |
| LDR r6, [sp, #48] |
| STR r1, [sp] |
| LDR r12, [sp, #56] |
| ANDS r5, r4, #3 |
| ADD r12, r12, #4096 |
| BEQ FILTER_LOOP |
| |
| |
| |
| MOV r8, #0 |
| ADD r14, r3, r4, LSL #1 |
| RSBS r7, r5, #3 |
| BEQ ORDER_LOOPEND |
| ORDER_LOOP: |
| STRH r8, [r14, #2]! |
| SUBS r7, r7, #1 |
| BGT ORDER_LOOP |
| ORDER_LOOPEND: |
| STRH r8, [r14, #2] |
| BIC r4, r4, #3 |
| ADD r4, r4, #4 |
| |
| |
| FILTER_LOOP: |
| LDR r1, [sp, #52] |
| |
| |
| |
| |
| CMP r2, #1 |
| MOV r7, r4 |
| BNE NEG_INC |
| |
| LDR r8 , [r0] |
| SUBS r7 , r7 , #1 |
| MOV r8, r8, lsl r1 |
| MOV r9, r8, asr r1 |
| MOV r8 , r8 , lsl r6 |
| STR r8 , [r12], #-4 |
| STR r9, [r0], #4 |
| |
| BEQ FILTER_LOOP2 |
| FILTER_LOOP1: |
| LDR r8 , [r0] |
| SUB r5 , r4 , r7 |
| MOV r5 , r5 , lsl #1 |
| MOV r11 , #0 |
| ADD r14, r12, r5, lsl #1 |
| INNER_LOOP1: |
| LDRSH r9 , [r3 , r5] |
| LDR r10 , [r14], #-4 |
| SUBS r5 , r5 , #2 |
| SMLAWB r11 , r10, r9, r11 |
| BGT INNER_LOOP1 |
| |
| MOV r8, r8, lsl r1 |
| SUB r8 , r8 , r11, lsl #1 |
| MOV r9, r8, asr r1 |
| STR r9 , [r0], #4 |
| SUBS r7 , r7 , #1 |
| MOV r8 , r8 , lsl r6 |
| STR r8 , [r12], #-4 |
| BGT FILTER_LOOP1 |
| |
| FILTER_LOOP2: |
| LDR r1, [sp] |
| SUBS r7 , r1 , r4 |
| BLE EXIT |
| |
| LDR r1, [sp, #52] |
| |
| |
| |
| |
| CMP r6, #1 |
| BEQ SHIFT_1 |
| |
| OUTER_LOOP2: |
| LDR r8 , [r0] |
| MOV r5 , r4 , lsl #1 |
| MOV r11 , #0 |
| LDR r9 , [r3 , r5] |
| ADD r14 , r12, r5, lsl #1 |
| SUB r5 , r5 , #4 |
| INNER_LOOP2: |
| LDR r10 , [r14], #-4 |
| LDR r2 , [r14] , #-4 |
| |
| SMLAWB r11, r10 , r9, r11 |
| LDR r9 , [r3 , r5] |
| SUB r5 , r5 , #4 |
| |
| SMLAWT r11, r2 , r9, r11 |
| LDR r10 , [r14] , #-4 |
| LDR r2 , [r14] , #-4 |
| |
| SMLAWB r11, r10 , r9, r11 |
| LDR r9 , [r3 , r5] |
| SUBS r5 , r5 , #4 |
| |
| SMLAWT r11, r2 , r9, r11 |
| |
| BGT INNER_LOOP2 |
| |
| MOV r8, r8, lsl r1 |
| SUB r8 , r8 , r11, lsl #1 |
| MOV r9, r8, asr r1 |
| STR r9 , [r0], #4 |
| MOV r2 , r8 , lsl r6 |
| STR r2 , [r12], #-4 |
| SUBS r7 , r7 , #1 |
| BGT OUTER_LOOP2 |
| B EXIT |
| |
| SHIFT_1: |
| MOV r6, r3 |
| |
| OUTER_LOOP2_SHIFT_1: |
| ADD r3, r6, r4 , lsl #1 |
| LDR r9 , [r3 ], #-4 |
| |
| LDR r8 , [r0] |
| ADD r14 , r12, r4, lsl #2 |
| MOV r5 , r4 |
| MOV r11 , #0 |
| |
| INNER_LOOP2_SHIFT_1: |
| LDR r10 , [r14] , #-4 |
| LDR r2 , [r14] , #-4 |
| SMLAWB r11 , r10 , r9, r11 |
| |
| LDR r9 , [r3] , #-4 |
| LDR r10 , [r14] , #-4 |
| SMLAWT r11, r2 , r9, r11 |
| |
| LDR r2 , [r14] , #-4 |
| SMLAWB r11, r10 , r9, r11 |
| LDR r9 , [r3 ], #-4 |
| |
| SUBS r5 , r5 , #4 |
| SMLAWT r11, r2 , r9, r11 |
| |
| BGT INNER_LOOP2_SHIFT_1 |
| |
| MOV r8, r8, lsl r1 |
| SUB r8 , r8 , r11, lsl #1 |
| MOV r9, r8, asr r1 |
| STR r9 , [r0], #4 |
| MOV r2 , r8 , lsl #1 |
| STR r2 , [r12], #-4 |
| SUBS r7 , r7 , #1 |
| |
| |
| BGT OUTER_LOOP2_SHIFT_1 |
| |
| |
| B EXIT |
| |
| |
| NEG_INC: |
| |
| LDR r8 , [r0] |
| SUBS r7 , r7 , #1 |
| MOV r8, r8, lsl r1 |
| MOV r9, r8, asr r1 |
| MOV r8 , r8 , lsl r6 |
| STR r8 , [r12], #-4 |
| STR r9, [r0], #-4 |
| |
| BEQ FILTER_LOOP2_NEG |
| FILTER_LOOP1_NEG: |
| LDR r8 , [r0] |
| SUB r5 , r4 , r7 |
| MOV r5 , r5 , lsl #1 |
| MOV r11 , #0 |
| ADD r14, r12, r5, lsl #1 |
| INNER_LOOP1_NEG: |
| LDRSH r9 , [r3 , r5] |
| LDR r10 , [r14], #-4 |
| SUBS r5 , r5 , #2 |
| SMLAWB r11 , r10, r9, r11 |
| BGT INNER_LOOP1_NEG |
| |
| MOV r8, r8, lsl r1 |
| SUB r8 , r8 , r11, lsl #1 |
| MOV r9, r8, asr r1 |
| STR r9 , [r0], #-4 |
| SUBS r7 , r7 , #1 |
| MOV r8 , r8 , lsl r6 |
| STR r8 , [r12], #-4 |
| BGT FILTER_LOOP1_NEG |
| |
| FILTER_LOOP2_NEG: |
| LDR r1, [sp] |
| SUBS r7 , r1 , r4 |
| BLE EXIT |
| |
| LDR r1, [sp, #52] |
| |
| |
| |
| |
| OUTER_LOOP2_NEG: |
| LDR r8 , [r0] |
| MOV r5 , r4 , lsl #1 |
| MOV r11 , #0 |
| LDR r9 , [r3 , r5] |
| ADD r14 , r12, r5, lsl #1 |
| SUB r5 , r5 , #4 |
| INNER_LOOP2_NEG: |
| LDR r10 , [r14], #-4 |
| LDR r2 , [r14] , #-4 |
| |
| SMLAWB r11, r10 , r9, r11 |
| LDR r9 , [r3 , r5] |
| SUB r5 , r5 , #4 |
| |
| SMLAWT r11, r2 , r9, r11 |
| LDR r10 , [r14] , #-4 |
| LDR r2 , [r14] , #-4 |
| |
| SMLAWB r11, r10 , r9, r11 |
| LDR r9 , [r3 , r5] |
| SUBS r5 , r5 , #4 |
| |
| SMLAWT r11, r2 , r9, r11 |
| |
| BGT INNER_LOOP2_NEG |
| |
| MOV r8, r8, lsl r1 |
| SUB r8 , r8 , r11, lsl #1 |
| MOV r9, r8, asr r1 |
| STR r9 , [r0], #-4 |
| MOV r2 , r8 , lsl r6 |
| STR r2 , [r12], #-4 |
| SUBS r7 , r7 , #1 |
| BGT OUTER_LOOP2_NEG |
| |
| EXIT: |
| ADD sp, sp , #4 |
| LDMFD r13!, {r4 - r12, r15} |
| |
