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FFmpeg/libavcodec/arm/sbcdsp_armv6.S

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/*
* Bluetooth low-complexity, subband codec (SBC)
*
* Copyright (C) 2017 Aurelien Jacobs <aurel@gnuage.org>
* Copyright (C) 2008-2010 Nokia Corporation
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
* Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch>
* Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* SBC ARMv6 optimizations. The instructions are scheduled for ARM11 pipeline.
*/
#include "libavutil/arm/asm.S"
function ff_sbc_analyze_4_armv6, export=1
@ r0 = in, r1 = out, r2 = consts
push {r1, r3-r7, lr}
push {r8-r12, r14}
ldrd r4, r5, [r0, #0]
ldrd r6, r7, [r2, #0]
ldrd r8, r9, [r0, #16]
ldrd r10, r11, [r2, #16]
mov r14, #0x8000
smlad r3, r4, r6, r14
smlad r12, r5, r7, r14
ldrd r4, r5, [r0, #32]
ldrd r6, r7, [r2, #32]
smlad r3, r8, r10, r3
smlad r12, r9, r11, r12
ldrd r8, r9, [r0, #48]
ldrd r10, r11, [r2, #48]
smlad r3, r4, r6, r3
smlad r12, r5, r7, r12
ldrd r4, r5, [r0, #64]
ldrd r6, r7, [r2, #64]
smlad r3, r8, r10, r3
smlad r12, r9, r11, r12
ldrd r8, r9, [r0, #8]
ldrd r10, r11, [r2, #8]
smlad r3, r4, r6, r3 @ t1[0] is done
smlad r12, r5, r7, r12 @ t1[1] is done
ldrd r4, r5, [r0, #24]
ldrd r6, r7, [r2, #24]
pkhtb r3, r12, r3, asr #16 @ combine t1[0] and t1[1]
smlad r12, r8, r10, r14
smlad r14, r9, r11, r14
ldrd r8, r9, [r0, #40]
ldrd r10, r11, [r2, #40]
smlad r12, r4, r6, r12
smlad r14, r5, r7, r14
ldrd r4, r5, [r0, #56]
ldrd r6, r7, [r2, #56]
smlad r12, r8, r10, r12
smlad r14, r9, r11, r14
ldrd r8, r9, [r0, #72]
ldrd r10, r11, [r2, #72]
smlad r12, r4, r6, r12
smlad r14, r5, r7, r14
ldrd r4, r5, [r2, #80] @ start loading cos table
smlad r12, r8, r10, r12 @ t1[2] is done
smlad r14, r9, r11, r14 @ t1[3] is done
ldrd r6, r7, [r2, #88]
ldrd r8, r9, [r2, #96]
ldrd r10, r11, [r2, #104] @ cos table fully loaded
pkhtb r12, r14, r12, asr #16 @ combine t1[2] and t1[3]
smuad r4, r3, r4
smuad r5, r3, r5
smlad r4, r12, r8, r4
smlad r5, r12, r9, r5
smuad r6, r3, r6
smuad r7, r3, r7
smlad r6, r12, r10, r6
smlad r7, r12, r11, r7
pop {r8-r12, r14}
stmia r1, {r4, r5, r6, r7}
pop {r1, r3-r7, pc}
endfunc
function ff_sbc_analyze_8_armv6, export=1
@ r0 = in, r1 = out, r2 = consts
push {r1, r3-r7, lr}
push {r8-r12, r14}
ldrd r4, r5, [r0, #24]
ldrd r6, r7, [r2, #24]
ldrd r8, r9, [r0, #56]
ldrd r10, r11, [r2, #56]
mov r14, #0x8000
smlad r3, r4, r6, r14
smlad r12, r5, r7, r14
ldrd r4, r5, [r0, #88]
ldrd r6, r7, [r2, #88]
smlad r3, r8, r10, r3
smlad r12, r9, r11, r12
ldrd r8, r9, [r0, #120]
ldrd r10, r11, [r2, #120]
smlad r3, r4, r6, r3
smlad r12, r5, r7, r12
ldrd r4, r5, [r0, #152]
ldrd r6, r7, [r2, #152]
smlad r3, r8, r10, r3
smlad r12, r9, r11, r12
ldrd r8, r9, [r0, #16]
ldrd r10, r11, [r2, #16]
smlad r3, r4, r6, r3 @ t1[6] is done
smlad r12, r5, r7, r12 @ t1[7] is done
ldrd r4, r5, [r0, #48]
ldrd r6, r7, [r2, #48]
pkhtb r3, r12, r3, asr #16 @ combine t1[6] and t1[7]
str r3, [sp, #-4]! @ save to stack
smlad r3, r8, r10, r14
smlad r12, r9, r11, r14
ldrd r8, r9, [r0, #80]
ldrd r10, r11, [r2, #80]
smlad r3, r4, r6, r3
smlad r12, r5, r7, r12
ldrd r4, r5, [r0, #112]
ldrd r6, r7, [r2, #112]
smlad r3, r8, r10, r3
smlad r12, r9, r11, r12
ldrd r8, r9, [r0, #144]
ldrd r10, r11, [r2, #144]
smlad r3, r4, r6, r3
smlad r12, r5, r7, r12
ldrd r4, r5, [r0, #0]
ldrd r6, r7, [r2, #0]
smlad r3, r8, r10, r3 @ t1[4] is done
smlad r12, r9, r11, r12 @ t1[5] is done
ldrd r8, r9, [r0, #32]
ldrd r10, r11, [r2, #32]
pkhtb r3, r12, r3, asr #16 @ combine t1[4] and t1[5]
str r3, [sp, #-4]! @ save to stack
smlad r3, r4, r6, r14
smlad r12, r5, r7, r14
ldrd r4, r5, [r0, #64]
ldrd r6, r7, [r2, #64]
smlad r3, r8, r10, r3
smlad r12, r9, r11, r12
ldrd r8, r9, [r0, #96]
ldrd r10, r11, [r2, #96]
smlad r3, r4, r6, r3
smlad r12, r5, r7, r12
ldrd r4, r5, [r0, #128]
ldrd r6, r7, [r2, #128]
smlad r3, r8, r10, r3
smlad r12, r9, r11, r12
ldrd r8, r9, [r0, #8]
ldrd r10, r11, [r2, #8]
smlad r3, r4, r6, r3 @ t1[0] is done
smlad r12, r5, r7, r12 @ t1[1] is done
ldrd r4, r5, [r0, #40]
ldrd r6, r7, [r2, #40]
pkhtb r3, r12, r3, asr #16 @ combine t1[0] and t1[1]
smlad r12, r8, r10, r14
smlad r14, r9, r11, r14
ldrd r8, r9, [r0, #72]
ldrd r10, r11, [r2, #72]
smlad r12, r4, r6, r12
smlad r14, r5, r7, r14
ldrd r4, r5, [r0, #104]
ldrd r6, r7, [r2, #104]
smlad r12, r8, r10, r12
smlad r14, r9, r11, r14
ldrd r8, r9, [r0, #136]
ldrd r10, r11, [r2, #136]!
smlad r12, r4, r6, r12
smlad r14, r5, r7, r14
ldrd r4, r5, [r2, #(160 - 136 + 0)]
smlad r12, r8, r10, r12 @ t1[2] is done
smlad r14, r9, r11, r14 @ t1[3] is done
ldrd r6, r7, [r2, #(160 - 136 + 8)]
smuad r4, r3, r4
smuad r5, r3, r5
pkhtb r12, r14, r12, asr #16 @ combine t1[2] and t1[3]
@ r3 = t2[0:1]
@ r12 = t2[2:3]
pop {r0, r14} @ t2[4:5], t2[6:7]
ldrd r8, r9, [r2, #(160 - 136 + 32)]
smuad r6, r3, r6
smuad r7, r3, r7
ldrd r10, r11, [r2, #(160 - 136 + 40)]
smlad r4, r12, r8, r4
smlad r5, r12, r9, r5
ldrd r8, r9, [r2, #(160 - 136 + 64)]
smlad r6, r12, r10, r6
smlad r7, r12, r11, r7
ldrd r10, r11, [r2, #(160 - 136 + 72)]
smlad r4, r0, r8, r4
smlad r5, r0, r9, r5
ldrd r8, r9, [r2, #(160 - 136 + 96)]
smlad r6, r0, r10, r6
smlad r7, r0, r11, r7
ldrd r10, r11, [r2, #(160 - 136 + 104)]
smlad r4, r14, r8, r4
smlad r5, r14, r9, r5
ldrd r8, r9, [r2, #(160 - 136 + 16 + 0)]
smlad r6, r14, r10, r6
smlad r7, r14, r11, r7
ldrd r10, r11, [r2, #(160 - 136 + 16 + 8)]
stmia r1!, {r4, r5}
smuad r4, r3, r8
smuad r5, r3, r9
ldrd r8, r9, [r2, #(160 - 136 + 16 + 32)]
stmia r1!, {r6, r7}
smuad r6, r3, r10
smuad r7, r3, r11
ldrd r10, r11, [r2, #(160 - 136 + 16 + 40)]
smlad r4, r12, r8, r4
smlad r5, r12, r9, r5
ldrd r8, r9, [r2, #(160 - 136 + 16 + 64)]
smlad r6, r12, r10, r6
smlad r7, r12, r11, r7
ldrd r10, r11, [r2, #(160 - 136 + 16 + 72)]
smlad r4, r0, r8, r4
smlad r5, r0, r9, r5
ldrd r8, r9, [r2, #(160 - 136 + 16 + 96)]
smlad r6, r0, r10, r6
smlad r7, r0, r11, r7
ldrd r10, r11, [r2, #(160 - 136 + 16 + 104)]
smlad r4, r14, r8, r4
smlad r5, r14, r9, r5
smlad r6, r14, r10, r6
smlad r7, r14, r11, r7
pop {r8-r12, r14}
stmia r1!, {r4, r5, r6, r7}
pop {r1, r3-r7, pc}
endfunc