f244cbd5
 Hu Chunming
ffmpeg支持h264编码
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/*****************************************************************************
* deblock-a-sve.S: aarch64 deblocking
*****************************************************************************
* Copyright (C) 2009-2024 x264 project
*
* Authors: David Chen <david.chen@myais.com.cn>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at licensing@x264.com.
*****************************************************************************/
#include "asm.S"
#include "deblock-a-common.S"
.arch armv8-a+sve
.macro h264_loop_filter_chroma_sve
ptrue p0.b, vl16
dup v22.16b, w2 // alpha
uxtl v24.8h, v24.8b
uabd v26.16b, v16.16b, v0.16b // abs(p0 - q0)
uxtl v4.8h, v0.8b
uxtl2 v5.8h, v0.16b
uabd v28.16b, v18.16b, v16.16b // abs(p1 - p0)
usubw v4.8h, v4.8h, v16.8b
usubw2 v5.8h, v5.8h, v16.16b
sli v24.8h, v24.8h, #8
shl v4.8h, v4.8h, #2
shl v5.8h, v5.8h, #2
uabd v30.16b, v2.16b, v0.16b // abs(q1 - q0)
uxtl v24.4s, v24.4h
uaddw v4.8h, v4.8h, v18.8b
uaddw2 v5.8h, v5.8h, v18.16b
cmphi p1.b, p0/z, z22.b, z26.b
usubw v4.8h, v4.8h, v2.8b
usubw2 v5.8h, v5.8h, v2.16b
sli v24.4s, v24.4s, #16
dup v22.16b, w3 // beta
rshrn v4.8b, v4.8h, #3
rshrn2 v4.16b, v5.8h, #3
cmphi p2.b, p0/z, z22.b, z28.b
cmphi p3.b, p0/z, z22.b, z30.b
smin v4.16b, v4.16b, v24.16b
neg v25.16b, v24.16b
and p1.b, p0/z, p1.b, p2.b
smax v4.16b, v4.16b, v25.16b
and p1.b, p0/z, p1.b, p3.b
uxtl v22.8h, v0.8b
uxtl2 v23.8h, v0.16b
uxtl v28.8h, v16.8b
uxtl2 v29.8h, v16.16b
saddw v28.8h, v28.8h, v4.8b
saddw2 v29.8h, v29.8h, v4.16b
ssubw v22.8h, v22.8h, v4.8b
ssubw2 v23.8h, v23.8h, v4.16b
sqxtun v16.8b, v28.8h
sqxtun v0.8b, v22.8h
sqxtun2 v16.16b, v29.8h
sqxtun2 v0.16b, v23.8h
.endm
function deblock_v_chroma_sve, export=1
h264_loop_filter_start
sub x0, x0, x1, lsl #1
// No performance improvement if sve load is used. So, continue using
// NEON load here
ld1 {v18.16b}, [x0], x1
ld1 {v16.16b}, [x0], x1
ld1 {v0.16b}, [x0], x1
ld1 {v2.16b}, [x0]
h264_loop_filter_chroma_sve
sub x0, x0, x1, lsl #1
st1b {z16.b}, p1, [x0]
add x0, x0, x1
st1b {z0.b}, p1, [x0]
ret
endfunc
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