mirror of
https://github.com/FFmpeg/FFmpeg.git
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83399cf569
This adds lots of extra .ifs, but speeds it up by a couple cycles,
by avoiding stalls.
This is cherrypicked from libav commit
e18c39005a.
Signed-off-by: Martin Storsjö <martin@martin.st>
770 lines
28 KiB
ArmAsm
770 lines
28 KiB
ArmAsm
/*
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* Copyright (c) 2016 Google Inc.
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/arm/asm.S"
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#include "neon.S"
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@ Do an 8x8 transpose, using q registers for the subtransposes that don't
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@ need to address the indiviudal d registers.
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@ r0,r1 == rq0, r2,r3 == rq1, etc
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.macro transpose_q_8x8 rq0, rq1, rq2, rq3, r0, r1, r2, r3, r4, r5, r6, r7
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vtrn.32 \rq0, \rq2
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vtrn.32 \rq1, \rq3
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vtrn.16 \rq0, \rq1
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vtrn.16 \rq2, \rq3
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vtrn.8 \r0, \r1
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vtrn.8 \r2, \r3
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vtrn.8 \r4, \r5
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vtrn.8 \r6, \r7
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.endm
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@ Do a 4x4 transpose, using q registers for the subtransposes that don't
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@ need to address the indiviudal d registers.
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@ r0,r1 == rq0, r2,r3 == rq1
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.macro transpose_q_4x4 rq0, rq1, r0, r1, r2, r3
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vtrn.16 \rq0, \rq1
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vtrn.8 \r0, \r1
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vtrn.8 \r2, \r3
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.endm
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@ The input to and output from this macro is in the registers d16-d31,
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@ and d0-d7 are used as scratch registers.
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@ p7 = d16 .. p3 = d20, p0 = d23, q0 = d24, q3 = d27, q7 = d31
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@ Depending on the width of the loop filter, we either use d16-d19
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@ and d28-d31 as temp registers, or d8-d15.
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@ tmp1,tmp2 = tmpq1, tmp3,tmp4 = tmpq2, tmp5,tmp6 = tmpq3, tmp7,tmp8 = tmpq4
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.macro loop_filter wd, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8, tmpq1, tmpq2, tmpq3, tmpq4
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vdup.u16 q0, r2 @ E
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vdup.u8 d2, r3 @ I
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ldr r3, [sp]
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vabd.u8 d4, d20, d21 @ abs(p3 - p2)
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vabd.u8 d5, d21, d22 @ abs(p2 - p1)
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vabd.u8 d6, d22, d23 @ abs(p1 - p0)
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vabd.u8 d7, d24, d25 @ abs(q0 - q1)
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vabd.u8 \tmp1, d25, d26 @ abs(q1 - q2)
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vabd.u8 \tmp2, d26, d27 @ abs(q2 - q3)
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vmax.u8 d4, d4, d5
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vmax.u8 d5, d6, d7
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vmax.u8 \tmp1, \tmp1, \tmp2
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vabdl.u8 q3, d23, d24 @ abs(p0 - q0)
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vmax.u8 d4, d4, d5
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vadd.u16 q3, q3, q3 @ abs(p0 - q0) * 2
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vabd.u8 d5, d22, d25 @ abs(p1 - q1)
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vmax.u8 d4, d4, \tmp1 @ max(abs(p3 - p2), ..., abs(q2 - q3))
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vshr.u8 d5, d5, #1
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vcle.u8 d4, d4, d2 @ max(abs()) <= I
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vaddw.u8 q3, q3, d5 @ abs(p0 - q0) * 2 + abs(p1 - q1) >> 1
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vcle.u16 q3, q3, q0
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vmovn.u16 d5, q3
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vand d4, d4, d5 @ fm
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vdup.u8 d3, r3 @ H
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vmov r2, r3, d4
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orrs r2, r2, r3
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@ If no pixels need filtering, just exit as soon as possible
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beq 9f
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.if \wd >= 8
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vmov.u8 d0, #1
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vabd.u8 d6, d20, d23 @ abs(p3 - p0)
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vabd.u8 d2, d21, d23 @ abs(p2 - p0)
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vabd.u8 d1, d22, d23 @ abs(p1 - p0)
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vabd.u8 \tmp1, d25, d24 @ abs(q1 - q0)
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vabd.u8 \tmp2, d26, d24 @ abs(q2 - q0)
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vabd.u8 \tmp3, d27, d24 @ abs(q3 - q0)
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vmax.u8 d6, d6, d2
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vmax.u8 d1, d1, \tmp1
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vmax.u8 \tmp2, \tmp2, \tmp3
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.if \wd == 16
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vabd.u8 d7, d16, d23 @ abs(p7 - p0)
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vmax.u8 d6, d6, d1
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vabd.u8 d2, d17, d23 @ abs(p6 - p0)
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vmax.u8 d6, d6, \tmp2
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vabd.u8 d1, d18, d23 @ abs(p5 - p0)
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vcle.u8 d6, d6, d0 @ flat8in
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vabd.u8 d8, d19, d23 @ abs(p4 - p0)
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vand d6, d6, d4 @ flat8in && fm
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vabd.u8 d9, d28, d24 @ abs(q4 - q0)
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vbic d4, d4, d6 @ fm && !flat8in
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vabd.u8 d10, d29, d24 @ abs(q5 - q0)
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vabd.u8 d11, d30, d24 @ abs(q6 - q0)
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vabd.u8 d12, d31, d24 @ abs(q7 - q0)
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vmax.u8 d7, d7, d2
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vmax.u8 d1, d1, d8
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vmax.u8 d9, d9, d10
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vmax.u8 d11, d11, d12
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@ The rest of the calculation of flat8out is interleaved below
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.else
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@ The rest of the calculation of flat8in is interleaved below
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.endif
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.endif
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@ Calculate the normal inner loop filter for 2 or 4 pixels
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vabd.u8 d5, d22, d23 @ abs(p1 - p0)
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.if \wd == 16
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vmax.u8 d7, d7, d1
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vmax.u8 d9, d9, d11
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.elseif \wd == 8
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vmax.u8 d6, d6, d1
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.endif
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vabd.u8 d1, d25, d24 @ abs(q1 - q0)
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.if \wd == 16
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vmax.u8 d7, d7, d9
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.elseif \wd == 8
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vmax.u8 d6, d6, \tmp2
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.endif
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vsubl.u8 \tmpq1, d22, d25 @ p1 - q1
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vmax.u8 d5, d5, d1 @ max(abs(p1 - p0), abs(q1 - q0))
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vsubl.u8 \tmpq2, d24, d23 @ q0 - p0
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vmov.s16 \tmpq3, #3
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.if \wd == 8
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vcle.u8 d6, d6, d0 @ flat8in
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.endif
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vcle.u8 d5, d5, d3 @ !hev
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.if \wd == 8
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vand d6, d6, d4 @ flat8in && fm
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.endif
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vqmovn.s16 \tmp1, \tmpq1 @ av_clip_int8(p1 - q1)
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.if \wd == 16
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vcle.u8 d7, d7, d0 @ flat8out
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.elseif \wd == 8
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vbic d4, d4, d6 @ fm && !flat8in
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.endif
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vand d5, d5, d4 @ !hev && fm && !flat8in
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.if \wd == 16
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vand d7, d7, d6 @ flat8out && flat8in && fm
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.endif
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vmul.s16 \tmpq2, \tmpq2, \tmpq3 @ 3 * (q0 - p0)
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vbic \tmp1, \tmp1, d5 @ if (!hev) av_clip_int8 = 0
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vmov.s8 d2, #4
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vaddw.s8 \tmpq2, \tmpq2, \tmp1 @ 3 * (q0 - p0) [+ av_clip_int8(p1 - q1)]
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vmov.s8 d3, #3
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vqmovn.s16 \tmp1, \tmpq2 @ f
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.if \wd == 16
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vbic d6, d6, d7 @ fm && flat8in && !flat8out
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.endif
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vqadd.s8 \tmp3, \tmp1, d2 @ FFMIN(f + 4, 127)
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vqadd.s8 \tmp4, \tmp1, d3 @ FFMIN(f + 3, 127)
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vmovl.u8 q0, d23 @ p0
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vshr.s8 \tmp3, \tmp3, #3 @ f1
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vshr.s8 \tmp4, \tmp4, #3 @ f2
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vmovl.u8 q1, d24 @ q0
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vaddw.s8 q0, q0, \tmp4 @ p0 + f2
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vsubw.s8 q1, q1, \tmp3 @ q0 - f1
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vqmovun.s16 d0, q0 @ out p0
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vqmovun.s16 d1, q1 @ out q0
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vrshr.s8 \tmp3, \tmp3, #1 @ f = (f1 + 1) >> 1
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vbit d23, d0, d4 @ if (fm && !flat8in)
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vbit d24, d1, d4
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vmovl.u8 q0, d22 @ p1
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vmovl.u8 q1, d25 @ q1
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.if \wd >= 8
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vmov r2, r3, d6
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.endif
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vaddw.s8 q0, q0, \tmp3 @ p1 + f
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vsubw.s8 q1, q1, \tmp3 @ q1 - f
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.if \wd >= 8
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orrs r2, r2, r3
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.endif
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vqmovun.s16 d0, q0 @ out p1
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vqmovun.s16 d2, q1 @ out q1
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vbit d22, d0, d5 @ if (!hev && fm && !flat8in)
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vbit d25, d2, d5
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.if \wd >= 8
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@ If no pixels need flat8in, jump to flat8out
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@ (or to a writeout of the inner 4 pixels, for wd=8)
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beq 6f
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@ flat8in
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vaddl.u8 \tmpq1, d20, d21
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vaddl.u8 \tmpq2, d22, d25
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vaddl.u8 \tmpq3, d20, d22
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vaddl.u8 \tmpq4, d23, d26
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vadd.u16 q0, \tmpq1, \tmpq1
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vaddw.u8 q0, q0, d23
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vaddw.u8 q0, q0, d24
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vadd.u16 q0, q0, \tmpq3
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vsub.s16 \tmpq2, \tmpq2, \tmpq1
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vsub.s16 \tmpq4, \tmpq4, \tmpq3
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vrshrn.u16 d2, q0, #3 @ out p2
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vadd.u16 q0, q0, \tmpq2
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vaddl.u8 \tmpq1, d20, d23
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vaddl.u8 \tmpq2, d24, d27
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vrshrn.u16 d3, q0, #3 @ out p1
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vadd.u16 q0, q0, \tmpq4
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vsub.s16 \tmpq2, \tmpq2, \tmpq1
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vaddl.u8 \tmpq3, d21, d24
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vaddl.u8 \tmpq4, d25, d27
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vrshrn.u16 d4, q0, #3 @ out p0
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vadd.u16 q0, q0, \tmpq2
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vsub.s16 \tmpq4, \tmpq4, \tmpq3
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vaddl.u8 \tmpq1, d22, d25
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vaddl.u8 \tmpq2, d26, d27
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vrshrn.u16 d5, q0, #3 @ out q0
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vadd.u16 q0, q0, \tmpq4
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vsub.s16 \tmpq2, \tmpq2, \tmpq1
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vrshrn.u16 \tmp5, q0, #3 @ out q1
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vadd.u16 q0, q0, \tmpq2
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@ The output here is written back into the input registers. This doesn't
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@ matter for the flat8out part below, since we only update those pixels
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@ which won't be touched below.
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vbit d21, d2, d6
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vbit d22, d3, d6
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vbit d23, d4, d6
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vrshrn.u16 \tmp6, q0, #3 @ out q2
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vbit d24, d5, d6
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vbit d25, \tmp5, d6
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vbit d26, \tmp6, d6
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.endif
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.if \wd == 16
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6:
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vorr d2, d6, d7
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vmov r2, r3, d2
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orrs r2, r2, r3
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@ If no pixels needed flat8in nor flat8out, jump to a
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@ writeout of the inner 4 pixels
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beq 7f
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vmov r2, r3, d7
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orrs r2, r2, r3
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@ If no pixels need flat8out, jump to a writeout of the inner 6 pixels
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beq 8f
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@ flat8out
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@ This writes all outputs into d2-d17 (skipping d6 and d16).
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@ If this part is skipped, the output is read from d21-d26 (which is the input
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@ to this section).
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vshll.u8 q0, d16, #3 @ 8 * d16
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vsubw.u8 q0, q0, d16 @ 7 * d16
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vaddw.u8 q0, q0, d17
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vaddl.u8 q4, d17, d18
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vaddl.u8 q5, d19, d20
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vadd.s16 q0, q0, q4
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vaddl.u8 q4, d16, d17
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vaddl.u8 q6, d21, d22
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vadd.s16 q0, q0, q5
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vaddl.u8 q5, d18, d25
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vaddl.u8 q7, d23, d24
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vsub.s16 q5, q5, q4
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vadd.s16 q0, q0, q6
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vadd.s16 q0, q0, q7
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vaddl.u8 q6, d16, d18
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vaddl.u8 q7, d19, d26
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vrshrn.u16 d2, q0, #4
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vadd.s16 q0, q0, q5
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vaddl.u8 q4, d16, d19
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vaddl.u8 q5, d20, d27
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vsub.s16 q7, q7, q6
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vbif d2, d17, d7
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vrshrn.u16 d3, q0, #4
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vadd.s16 q0, q0, q7
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vaddl.u8 q6, d16, d20
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vaddl.u8 q7, d21, d28
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vsub.s16 q5, q5, q4
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vbif d3, d18, d7
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vrshrn.u16 d4, q0, #4
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vadd.s16 q0, q0, q5
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vaddl.u8 q4, d16, d21
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vaddl.u8 q5, d22, d29
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vsub.s16 q7, q7, q6
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vbif d4, d19, d7
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vrshrn.u16 d5, q0, #4
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vadd.s16 q0, q0, q7
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vaddl.u8 q6, d16, d22
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vaddl.u8 q7, d23, d30
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vsub.s16 q5, q5, q4
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vbif d5, d20, d7
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vrshrn.u16 d6, q0, #4
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vadd.s16 q0, q0, q5
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vaddl.u8 q5, d16, d23
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vsub.s16 q7, q7, q6
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vaddl.u8 q6, d24, d31
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vbif d6, d21, d7
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vrshrn.u16 d8, q0, #4
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vadd.s16 q0, q0, q7
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vsub.s16 q5, q6, q5
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vaddl.u8 q6, d17, d24
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vaddl.u8 q7, d25, d31
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vbif d8, d22, d7
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vrshrn.u16 d9, q0, #4
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vadd.s16 q0, q0, q5
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vsub.s16 q7, q7, q6
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vaddl.u8 q6, d26, d31
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vbif d9, d23, d7
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vrshrn.u16 d10, q0, #4
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vadd.s16 q0, q0, q7
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vaddl.u8 q7, d18, d25
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vaddl.u8 q9, d19, d26
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vsub.s16 q6, q6, q7
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vaddl.u8 q7, d27, d31
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vbif d10, d24, d7
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vrshrn.u16 d11, q0, #4
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vadd.s16 q0, q0, q6
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vaddl.u8 q6, d20, d27
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vsub.s16 q7, q7, q9
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vaddl.u8 q9, d28, d31
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vbif d11, d25, d7
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vsub.s16 q9, q9, q6
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vrshrn.u16 d12, q0, #4
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vadd.s16 q0, q0, q7
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vaddl.u8 q7, d21, d28
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vaddl.u8 q10, d29, d31
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vbif d12, d26, d7
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vrshrn.u16 d13, q0, #4
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vadd.s16 q0, q0, q9
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vsub.s16 q10, q10, q7
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vaddl.u8 q9, d22, d29
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vaddl.u8 q11, d30, d31
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vbif d13, d27, d7
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vrshrn.u16 d14, q0, #4
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vadd.s16 q0, q0, q10
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vsub.s16 q11, q11, q9
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vbif d14, d28, d7
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vrshrn.u16 d15, q0, #4
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vadd.s16 q0, q0, q11
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vbif d15, d29, d7
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vrshrn.u16 d17, q0, #4
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vbif d17, d30, d7
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.endif
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.endm
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@ For wd <= 8, we use d16-d19 and d28-d31 for temp registers,
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@ while we need those for inputs/outputs in wd=16 and use d8-d15
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@ for temp registers there instead.
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.macro loop_filter_4
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loop_filter 4, d16, d17, d18, d19, d28, d29, d30, d31, q8, q9, q14, q15
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.endm
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.macro loop_filter_8
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loop_filter 8, d16, d17, d18, d19, d28, d29, d30, d31, q8, q9, q14, q15
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.endm
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.macro loop_filter_16
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loop_filter 16, d8, d9, d10, d11, d12, d13, d14, d15, q4, q5, q6, q7
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.endm
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@ The public functions in this file have got the following signature:
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@ void loop_filter(uint8_t *dst, ptrdiff_t stride, int mb_lim, int lim, int hev_thr);
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function ff_vp9_loop_filter_v_4_8_neon, export=1
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sub r12, r0, r1, lsl #2
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vld1.8 {d20}, [r12,:64], r1 @ p3
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vld1.8 {d24}, [r0, :64], r1 @ q0
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vld1.8 {d21}, [r12,:64], r1 @ p2
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vld1.8 {d25}, [r0, :64], r1 @ q1
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vld1.8 {d22}, [r12,:64], r1 @ p1
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vld1.8 {d26}, [r0, :64], r1 @ q2
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vld1.8 {d23}, [r12,:64], r1 @ p0
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vld1.8 {d27}, [r0, :64], r1 @ q3
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sub r0, r0, r1, lsl #2
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sub r12, r12, r1, lsl #1
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loop_filter_4
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vst1.8 {d22}, [r12,:64], r1
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vst1.8 {d24}, [r0, :64], r1
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vst1.8 {d23}, [r12,:64], r1
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vst1.8 {d25}, [r0, :64], r1
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9:
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bx lr
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endfunc
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function ff_vp9_loop_filter_h_4_8_neon, export=1
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sub r12, r0, #4
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add r0, r12, r1, lsl #2
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vld1.8 {d20}, [r12], r1
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vld1.8 {d24}, [r0], r1
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vld1.8 {d21}, [r12], r1
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vld1.8 {d25}, [r0], r1
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vld1.8 {d22}, [r12], r1
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vld1.8 {d26}, [r0], r1
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vld1.8 {d23}, [r12], r1
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vld1.8 {d27}, [r0], r1
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sub r12, r12, r1, lsl #2
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sub r0, r0, r1, lsl #2
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@ Move r0/r12 forward by 2 pixels; we don't need to rewrite the
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@ outermost 2 pixels since they aren't changed.
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add r12, r12, #2
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add r0, r0, #2
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@ Transpose the 8x8 pixels, taking advantage of q registers, to get
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@ one register per column.
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transpose_q_8x8 q10, q11, q12, q13, d20, d21, d22, d23, d24, d25, d26, d27
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loop_filter_4
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@ We only will write the mid 4 pixels back; after the loop filter,
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@ these are in d22, d23, d24, d25 (q11, q12), ordered as rows
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@ (8x4 pixels). We need to transpose them to columns, done with a
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@ 4x4 transpose (which in practice is two 4x4 transposes of the two
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@ 4x4 halves of the 8x4 pixels; into 4x8 pixels).
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transpose_q_4x4 q11, q12, d22, d23, d24, d25
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vst1.32 {d22[0]}, [r12], r1
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vst1.32 {d22[1]}, [r0], r1
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vst1.32 {d23[0]}, [r12], r1
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vst1.32 {d23[1]}, [r0], r1
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vst1.32 {d24[0]}, [r12], r1
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vst1.32 {d24[1]}, [r0], r1
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vst1.32 {d25[0]}, [r12], r1
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vst1.32 {d25[1]}, [r0], r1
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9:
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bx lr
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endfunc
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function ff_vp9_loop_filter_v_8_8_neon, export=1
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sub r12, r0, r1, lsl #2
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vld1.8 {d20}, [r12,:64], r1 @ p3
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vld1.8 {d24}, [r0, :64], r1 @ q0
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vld1.8 {d21}, [r12,:64], r1 @ p2
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vld1.8 {d25}, [r0, :64], r1 @ q1
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vld1.8 {d22}, [r12,:64], r1 @ p1
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vld1.8 {d26}, [r0, :64], r1 @ q2
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vld1.8 {d23}, [r12,:64], r1 @ p0
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vld1.8 {d27}, [r0, :64], r1 @ q3
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sub r12, r12, r1, lsl #2
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sub r0, r0, r1, lsl #2
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add r12, r12, r1
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loop_filter_8
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vst1.8 {d21}, [r12,:64], r1
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vst1.8 {d24}, [r0, :64], r1
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vst1.8 {d22}, [r12,:64], r1
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vst1.8 {d25}, [r0, :64], r1
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vst1.8 {d23}, [r12,:64], r1
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vst1.8 {d26}, [r0, :64], r1
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9:
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bx lr
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6:
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sub r12, r0, r1, lsl #1
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vst1.8 {d22}, [r12,:64], r1
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vst1.8 {d24}, [r0, :64], r1
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vst1.8 {d23}, [r12,:64], r1
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vst1.8 {d25}, [r0, :64], r1
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bx lr
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endfunc
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function ff_vp9_loop_filter_h_8_8_neon, export=1
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sub r12, r0, #4
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add r0, r12, r1, lsl #2
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vld1.8 {d20}, [r12], r1
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vld1.8 {d24}, [r0], r1
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vld1.8 {d21}, [r12], r1
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vld1.8 {d25}, [r0], r1
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vld1.8 {d22}, [r12], r1
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vld1.8 {d26}, [r0], r1
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vld1.8 {d23}, [r12], r1
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vld1.8 {d27}, [r0], r1
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sub r12, r12, r1, lsl #2
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sub r0, r0, r1, lsl #2
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transpose_q_8x8 q10, q11, q12, q13, d20, d21, d22, d23, d24, d25, d26, d27
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loop_filter_8
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@ Even though only 6 pixels per row have been changed, we write the
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@ full 8 pixel registers.
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transpose_q_8x8 q10, q11, q12, q13, d20, d21, d22, d23, d24, d25, d26, d27
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vst1.8 {d20}, [r12], r1
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vst1.8 {d24}, [r0], r1
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vst1.8 {d21}, [r12], r1
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vst1.8 {d25}, [r0], r1
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vst1.8 {d22}, [r12], r1
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vst1.8 {d26}, [r0], r1
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vst1.8 {d23}, [r12], r1
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vst1.8 {d27}, [r0], r1
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9:
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bx lr
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6:
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@ If we didn't need to do the flat8in part, we use the same writeback
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@ as in loop_filter_h_4_8.
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add r12, r12, #2
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add r0, r0, #2
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transpose_q_4x4 q11, q12, d22, d23, d24, d25
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vst1.32 {d22[0]}, [r12], r1
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vst1.32 {d22[1]}, [r0], r1
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vst1.32 {d23[0]}, [r12], r1
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vst1.32 {d23[1]}, [r0], r1
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vst1.32 {d24[0]}, [r12], r1
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vst1.32 {d24[1]}, [r0], r1
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vst1.32 {d25[0]}, [r12], r1
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vst1.32 {d25[1]}, [r0], r1
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bx lr
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endfunc
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function vp9_loop_filter_v_16_neon
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sub r12, r0, r1, lsl #3
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@ Read p7-p0 using r12 and q0-q7 using r0
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vld1.8 {d16}, [r12,:64], r1 @ p7
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vld1.8 {d24}, [r0, :64], r1 @ q0
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vld1.8 {d17}, [r12,:64], r1 @ p6
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vld1.8 {d25}, [r0, :64], r1 @ q1
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vld1.8 {d18}, [r12,:64], r1 @ p5
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vld1.8 {d26}, [r0, :64], r1 @ q2
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vld1.8 {d19}, [r12,:64], r1 @ p4
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vld1.8 {d27}, [r0, :64], r1 @ q3
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vld1.8 {d20}, [r12,:64], r1 @ p3
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vld1.8 {d28}, [r0, :64], r1 @ q4
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vld1.8 {d21}, [r12,:64], r1 @ p2
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vld1.8 {d29}, [r0, :64], r1 @ q5
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vld1.8 {d22}, [r12,:64], r1 @ p1
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vld1.8 {d30}, [r0, :64], r1 @ q6
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vld1.8 {d23}, [r12,:64], r1 @ p0
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vld1.8 {d31}, [r0, :64], r1 @ q7
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sub r12, r12, r1, lsl #3
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sub r0, r0, r1, lsl #3
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add r12, r12, r1
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loop_filter_16
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@ If we did the flat8out part, we get the output in
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@ d2-d17 (skipping d7 and d16). r12 points to r0 - 7 * stride,
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@ store d2-d9 there, and d10-d17 into r0.
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vst1.8 {d2}, [r12,:64], r1
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vst1.8 {d10}, [r0, :64], r1
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vst1.8 {d3}, [r12,:64], r1
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vst1.8 {d11}, [r0, :64], r1
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vst1.8 {d4}, [r12,:64], r1
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vst1.8 {d12}, [r0, :64], r1
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vst1.8 {d5}, [r12,:64], r1
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vst1.8 {d13}, [r0, :64], r1
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vst1.8 {d6}, [r12,:64], r1
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vst1.8 {d14}, [r0, :64], r1
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vst1.8 {d8}, [r12,:64], r1
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vst1.8 {d15}, [r0, :64], r1
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vst1.8 {d9}, [r12,:64], r1
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vst1.8 {d17}, [r0, :64], r1
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sub r0, r0, r1, lsl #3
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add r0, r0, r1
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|
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9:
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bx lr
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8:
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add r12, r12, r1, lsl #2
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@ If we didn't do the flat8out part, the output is left in the
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@ input registers.
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vst1.8 {d21}, [r12,:64], r1
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vst1.8 {d24}, [r0, :64], r1
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vst1.8 {d22}, [r12,:64], r1
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vst1.8 {d25}, [r0, :64], r1
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vst1.8 {d23}, [r12,:64], r1
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vst1.8 {d26}, [r0, :64], r1
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sub r0, r0, r1, lsl #1
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|
sub r0, r0, r1
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bx lr
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7:
|
|
sub r12, r0, r1, lsl #1
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vst1.8 {d22}, [r12,:64], r1
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vst1.8 {d24}, [r0, :64], r1
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vst1.8 {d23}, [r12,:64], r1
|
|
vst1.8 {d25}, [r0, :64], r1
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sub r0, r0, r1, lsl #1
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bx lr
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endfunc
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function ff_vp9_loop_filter_v_16_8_neon, export=1
|
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ldr r12, [sp]
|
|
push {lr}
|
|
vpush {q4-q7}
|
|
push {r12}
|
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bl vp9_loop_filter_v_16_neon
|
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add sp, sp, #4
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vpop {q4-q7}
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pop {pc}
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endfunc
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function ff_vp9_loop_filter_v_16_16_neon, export=1
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ldr r12, [sp]
|
|
// The filter clobbers r2 and r3, but we need to keep them for the second round
|
|
push {r2, r3, lr}
|
|
vpush {q4-q7}
|
|
push {r12}
|
|
bl vp9_loop_filter_v_16_neon
|
|
add r0, #8
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ldr r2, [sp, #68]
|
|
ldr r3, [sp, #72]
|
|
bl vp9_loop_filter_v_16_neon
|
|
add sp, sp, #4
|
|
vpop {q4-q7}
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pop {r2, r3, pc}
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|
endfunc
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function vp9_loop_filter_h_16_neon
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sub r12, r0, #8
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vld1.8 {d16}, [r12,:64], r1
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vld1.8 {d24}, [r0, :64], r1
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vld1.8 {d17}, [r12,:64], r1
|
|
vld1.8 {d25}, [r0, :64], r1
|
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vld1.8 {d18}, [r12,:64], r1
|
|
vld1.8 {d26}, [r0, :64], r1
|
|
vld1.8 {d19}, [r12,:64], r1
|
|
vld1.8 {d27}, [r0, :64], r1
|
|
vld1.8 {d20}, [r12,:64], r1
|
|
vld1.8 {d28}, [r0, :64], r1
|
|
vld1.8 {d21}, [r12,:64], r1
|
|
vld1.8 {d29}, [r0, :64], r1
|
|
vld1.8 {d22}, [r12,:64], r1
|
|
vld1.8 {d30}, [r0, :64], r1
|
|
vld1.8 {d23}, [r12,:64], r1
|
|
vld1.8 {d31}, [r0, :64], r1
|
|
sub r0, r0, r1, lsl #3
|
|
sub r12, r12, r1, lsl #3
|
|
|
|
@ The 16x8 pixels read above is in two 8x8 blocks; the left
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|
@ half in d16-d23, and the right half in d24-d31. Do two 8x8 transposes
|
|
@ of this, to get one column per register. This could be done with two
|
|
@ transpose_8x8 as below, but this takes advantage of the q registers.
|
|
transpose16_4x4 q8, q9, q10, q11, q12, q13, q14, q15
|
|
vtrn.8 d16, d17
|
|
vtrn.8 d18, d19
|
|
vtrn.8 d20, d21
|
|
vtrn.8 d22, d23
|
|
vtrn.8 d24, d25
|
|
vtrn.8 d26, d27
|
|
vtrn.8 d28, d29
|
|
vtrn.8 d30, d31
|
|
|
|
loop_filter_16
|
|
|
|
@ Transpose back; this is the same transpose as above, but
|
|
@ we can't take advantage of q registers for the transpose, since
|
|
@ all d registers in the transpose aren't consecutive.
|
|
transpose_8x8 d16, d2, d3, d4, d5, d6, d8, d9
|
|
transpose_8x8 d10, d11, d12, d13, d14, d15, d17, d31
|
|
|
|
vst1.8 {d16}, [r12,:64], r1
|
|
vst1.8 {d10}, [r0, :64], r1
|
|
|
|
vst1.8 {d2}, [r12,:64], r1
|
|
vst1.8 {d11}, [r0, :64], r1
|
|
|
|
vst1.8 {d3}, [r12,:64], r1
|
|
vst1.8 {d12}, [r0, :64], r1
|
|
|
|
vst1.8 {d4}, [r12,:64], r1
|
|
vst1.8 {d13}, [r0, :64], r1
|
|
|
|
vst1.8 {d5}, [r12,:64], r1
|
|
vst1.8 {d14}, [r0, :64], r1
|
|
|
|
vst1.8 {d6}, [r12,:64], r1
|
|
vst1.8 {d15}, [r0, :64], r1
|
|
|
|
vst1.8 {d8}, [r12,:64], r1
|
|
vst1.8 {d17}, [r0, :64], r1
|
|
|
|
vst1.8 {d9}, [r12,:64], r1
|
|
vst1.8 {d31}, [r0, :64], r1
|
|
sub r0, r0, r1, lsl #3
|
|
9:
|
|
bx lr
|
|
8:
|
|
@ The same writeback as in loop_filter_h_8_8
|
|
sub r12, r0, #4
|
|
add r0, r12, r1, lsl #2
|
|
transpose_q_8x8 q10, q11, q12, q13, d20, d21, d22, d23, d24, d25, d26, d27
|
|
|
|
vst1.8 {d20}, [r12], r1
|
|
vst1.8 {d24}, [r0], r1
|
|
vst1.8 {d21}, [r12], r1
|
|
vst1.8 {d25}, [r0], r1
|
|
vst1.8 {d22}, [r12], r1
|
|
vst1.8 {d26}, [r0], r1
|
|
vst1.8 {d23}, [r12], r1
|
|
vst1.8 {d27}, [r0], r1
|
|
sub r0, r0, r1, lsl #3
|
|
add r0, r0, #4
|
|
bx lr
|
|
7:
|
|
@ The same writeback as in loop_filter_h_4_8
|
|
sub r12, r0, #2
|
|
add r0, r12, r1, lsl #2
|
|
transpose_q_4x4 q11, q12, d22, d23, d24, d25
|
|
vst1.32 {d22[0]}, [r12], r1
|
|
vst1.32 {d22[1]}, [r0], r1
|
|
vst1.32 {d23[0]}, [r12], r1
|
|
vst1.32 {d23[1]}, [r0], r1
|
|
vst1.32 {d24[0]}, [r12], r1
|
|
vst1.32 {d24[1]}, [r0], r1
|
|
vst1.32 {d25[0]}, [r12], r1
|
|
vst1.32 {d25[1]}, [r0], r1
|
|
sub r0, r0, r1, lsl #3
|
|
add r0, r0, #2
|
|
bx lr
|
|
endfunc
|
|
|
|
function ff_vp9_loop_filter_h_16_8_neon, export=1
|
|
ldr r12, [sp]
|
|
push {lr}
|
|
vpush {q4-q7}
|
|
push {r12}
|
|
bl vp9_loop_filter_h_16_neon
|
|
add sp, sp, #4
|
|
vpop {q4-q7}
|
|
pop {pc}
|
|
endfunc
|
|
|
|
function ff_vp9_loop_filter_h_16_16_neon, export=1
|
|
ldr r12, [sp]
|
|
// The filter clobbers r2 and r3, but we need to keep them for the second round
|
|
push {r2, r3, lr}
|
|
vpush {q4-q7}
|
|
push {r12}
|
|
bl vp9_loop_filter_h_16_neon
|
|
add r0, r0, r1, lsl #3
|
|
ldr r2, [sp, #68]
|
|
ldr r3, [sp, #72]
|
|
bl vp9_loop_filter_h_16_neon
|
|
add sp, sp, #4
|
|
vpop {q4-q7}
|
|
pop {r2, r3, pc}
|
|
endfunc
|