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@/******************************************************************************
@ *
@ * 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_overlap_out_copy_armv7
.global ixheaacd_spec_to_overlapbuf_armv7
.global ixheaacd_overlap_buf_out_armv7
ixheaacd_overlap_buf_out_armv7:
STMFD sp!, {r4-r5}
MOV r3, r3, lsl #1
OUTSAMPLE_LOOP:
LDR r4, [r1], #4
LDR r5, [r1], #4
SUBS r2, r2, #2
QADD16 r4, r4, r4
QADD16 r5, r5, r5
STRH r4, [r0], r3
STRH r5, [r0], r3
BGT OUTSAMPLE_LOOP
LDMFD sp!, {r4-r5}
BX lr
ixheaacd_overlap_out_copy_armv7:
STMFD sp!, {r4-r9, r14}
MOV r9, #32
MOV r8, r1
MOV r3, r3, LSL #1
OUT_OVERLAP_LOOP:
LDR r4, [r1], #4
LDR r5, [r1], #4
SUBS r9, r9, #1
QADD16 r4, r4, r4
QADD16 r5, r5, r5
LDR r6, [r2], #4
LDR r7, [r2], #4
STRH r4, [r0], r3
STRH r5, [r0], r3
STR r6, [r8], #4
STR r7, [r8], #4
BGT OUT_OVERLAP_LOOP
LDMFD sp!, {r4-r9, r15}
ixheaacd_spec_to_overlapbuf_armv7:
STMFD sp!, {r4-r10, r14}
MOV r6, #1
RSB r2, r2, #16
AND r2, r2, #0xFF
SUB r7, r2, #1
LSL r14, r6, r7
MOV r3, r3, ASR #1
OVERLAP_LOOP1:
LDMIA r1!, {r4-r5}
SUBS r3, r3, #1
QADD r4, r4, r14
QADD r5, r5, r14
MOV r4, r4, ASR r2
MOV r5, r5, ASR r2
STR r4, [r0], #4
STR r5, [r0], #4
BGT OVERLAP_LOOP1
LDMFD sp!, {r4-r10, pc}
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