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 25 .global ixheaacd_overlap_out_copy_armv7 26 .global ixheaacd_spec_to_overlapbuf_armv7 27 .global ixheaacd_overlap_buf_out_armv7 28 29 ixheaacd_overlap_buf_out_armv7: 30 31 STMFD sp!, {r4-r5} 32 MOV r3, r3, lsl #1 33 34 OUTSAMPLE_LOOP: 35 36 LDR r4, [r1], #4 37 LDR r5, [r1], #4 38 SUBS r2, r2, #2 39 40 QADD16 r4, r4, r4 41 QADD16 r5, r5, r5 42 43 STRH r4, [r0], r3 44 STRH r5, [r0], r3 45 46 BGT OUTSAMPLE_LOOP 47 48 LDMFD sp!, {r4-r5} 49 BX lr 50 51 52 ixheaacd_overlap_out_copy_armv7: 53 54 STMFD sp!, {r4-r9, r14} 55 MOV r9, #32 56 MOV r8, r1 57 MOV r3, r3, LSL #1 58 59 60 OUT_OVERLAP_LOOP: 61 LDR r4, [r1], #4 62 LDR r5, [r1], #4 63 SUBS r9, r9, #1 64 65 QADD16 r4, r4, r4 66 QADD16 r5, r5, r5 67 68 LDR r6, [r2], #4 69 LDR r7, [r2], #4 70 71 STRH r4, [r0], r3 72 STRH r5, [r0], r3 73 74 STR r6, [r8], #4 75 STR r7, [r8], #4 76 77 BGT OUT_OVERLAP_LOOP 78 79 LDMFD sp!, {r4-r9, r15} 80 81 82 83 84 ixheaacd_spec_to_overlapbuf_armv7: 85 86 STMFD sp!, {r4-r10, r14} 87 88 MOV r6, #1 89 RSB r2, r2, #16 90 AND r2, r2, #0xFF 91 SUB r7, r2, #1 92 LSL r14, r6, r7 93 MOV r3, r3, ASR #1 94 95 OVERLAP_LOOP1: 96 97 98 LDMIA r1!, {r4-r5} 99 SUBS r3, r3, #1 100 101 QADD r4, r4, r14 102 QADD r5, r5, r14 103 104 MOV r4, r4, ASR r2 105 MOV r5, r5, ASR r2 106 107 STR r4, [r0], #4 108 STR r5, [r0], #4 109 110 111 BGT OVERLAP_LOOP1 112 LDMFD sp!, {r4-r10, pc} 113 114
