4c72471cdb
AAC Core coder changes to take the output samples as 32 bit and subject to peak limiter to avoid any clipping , at the same time maintaining precision. Bug: 175435457 Test: atest CtsMediaTestCases:DecoderTest Test: atest CtsMediaTestCases:DecoderTestAacDrc Test: atest CtsMediaTestCases:DecoderTestXheAac Test: atest CtsMediaTestCases:DecoderTestAacFormat Test: atest CtsMediaV2TestCases:CodecDecoderTest
113 lines
2.6 KiB
ArmAsm
113 lines
2.6 KiB
ArmAsm
@/******************************************************************************
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@ *
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@ * Copyright (C) 2018 The Android Open Source Project
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@ *
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@ * Licensed under the Apache License, Version 2.0 (the "License");
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@ * you may not use this file except in compliance with the License.
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@ * You may obtain a copy of the License at:
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@ *
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@ * http://www.apache.org/licenses/LICENSE-2.0
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@ *
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@ * Unless required by applicable law or agreed to in writing, software
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@ * distributed under the License is distributed on an "AS IS" BASIS,
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@ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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@ * See the License for the specific language governing permissions and
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@ * limitations under the License.
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@ *
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@ *****************************************************************************
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@ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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@*/
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.text
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.p2align 2
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.global ixheaacd_overlap_out_copy_armv7
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.global ixheaacd_spec_to_overlapbuf_armv7
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.global ixheaacd_overlap_buf_out_armv7
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ixheaacd_overlap_buf_out_armv7:
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STMFD sp!, {r4-r5}
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MOV r3, r3, lsl #2
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OUTSAMPLE_LOOP:
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LDR r4, [r1], #4
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LDR r5, [r1], #4
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SUBS r2, r2, #2
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LSL r4,r4,#15
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LSL r5,r5,#15
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STR r4, [r0], r3
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STR r5, [r0], r3
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BGT OUTSAMPLE_LOOP
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LDMFD sp!, {r4-r5}
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BX lr
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ixheaacd_overlap_out_copy_armv7:
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STMFD sp!, {r4-r9, r14}
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MOV r9, #32
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MOV r8, r1
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MOV r3, r3, LSL #2
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OUT_OVERLAP_LOOP:
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LDR r4, [r1], #4
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LDR r5, [r1], #4
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SUBS r9, r9, #1
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LSL r4,r4,#15
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LSL r5,r5,#15
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LDR r6, [r2], #4
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LDR r7, [r2], #4
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STR r4, [r0], r3
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STR r5, [r0], r3
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STR r6, [r8], #4
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STR r7, [r8], #4
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BGT OUT_OVERLAP_LOOP
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LDMFD sp!, {r4-r9, r15}
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ixheaacd_spec_to_overlapbuf_armv7:
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STMFD sp!, {r4-r10, r14}
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MOV r6, #1
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RSB r2, r2, #16
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AND r2, r2, #0xFF
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SUB r7, r2, #1
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LSL r14, r6, r7
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MOV r3, r3, ASR #1
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OVERLAP_LOOP1:
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LDMIA r1!, {r4-r5}
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SUBS r3, r3, #1
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QADD r4, r4, r14
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QADD r5, r5, r14
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MOV r4, r4, ASR r2
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MOV r5, r5, ASR r2
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STR r4, [r0], #4
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STR r5, [r0], #4
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BGT OVERLAP_LOOP1
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LDMFD sp!, {r4-r10, pc}
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