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/* -*-arm64-*-
* vim: syntax=arm64asm
*
* Copyright (c) 2014 Seppo Tomperi <seppo.tomperi@vtt.fi>
* Copyright (c) 2023 J. Dekker <jdek@itanimul.li>
*
* 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
*/
#include "libavutil/aarch64/asm.S"
#include "neon.S"
.macro hevc_loop_filter_chroma_start bitdepth
mov x4, x30
ldr w14, [x2]
ldr w15, [x2, #4]
.if \bitdepth > 8
lsl w14, w14, #(\bitdepth - 8)
lsl w15, w15, #(\bitdepth - 8)
.endif
adds w2, w14, w15
b.eq 1f
dup v16.4h, w14
dup v17.4h, w15
trn1 v16.2d, v16.2d, v17.2d
.if \bitdepth > 8
mvni v19.8h, #((0xff << (\bitdepth - 8)) & 0xff), lsl #8
movi v18.8h, #0
.endif
neg v17.8h, v16.8h
.endm
.macro hevc_loop_filter_chroma_body bitdepth
.if \bitdepth <= 8
uxtl v20.8h, v0.8b // p1
uxtl v1.8h, v1.8b // p0
uxtl v2.8h, v2.8b // q0
uxtl v23.8h, v3.8b // q1
va .req v20
vb .req v23
.else // required to specify both cases as we are unable to do: v0 .req v20
va .req v0
vb .req v3
.endif
sub v5.8h, v2.8h, v1.8h // q0 - p0
sub v6.8h, va.8h, vb.8h // p1 - q1
shl v5.8h, v5.8h, #2
add v5.8h, v6.8h, v5.8h
srshr v5.8h, v5.8h, #3
clip v17.8h, v16.8h, v5.8h
sqadd v1.8h, v1.8h, v5.8h // p0 + delta
sqsub v2.8h, v2.8h, v5.8h // q0 - delta
.if \bitdepth <= 8
sqxtun v1.8b, v1.8h
sqxtun v2.8b, v2.8h
.else
clip v18.8h, v19.8h, v1.8h, v2.8h
.endif
.unreq va
.unreq vb
.endm
function hevc_loop_filter_chroma_body_8_neon, export=0
hevc_loop_filter_chroma_body 8
ret
endfunc
function hevc_loop_filter_chroma_body_10_neon, export=0
hevc_loop_filter_chroma_body_12_neon:
hevc_loop_filter_chroma_body 10
ret
endfunc
// void ff_hevc_h_loop_filter_chroma_8_neon(uint8_t *_pix, ptrdiff_t _stride, int *_tc, uint8_t *_no_p, uint8_t *_no_q);
.macro hevc_h_loop_filter_chroma bitdepth
function ff_hevc_h_loop_filter_chroma_\bitdepth\()_neon, export=1
hevc_loop_filter_chroma_start \bitdepth
sub x0, x0, x1, lsl #1
.if \bitdepth > 8
ld1 {v0.8h}, [x0], x1
ld1 {v1.8h}, [x0], x1
ld1 {v2.8h}, [x0], x1
ld1 {v3.8h}, [x0]
.else
ld1 {v0.8b}, [x0], x1
ld1 {v1.8b}, [x0], x1
ld1 {v2.8b}, [x0], x1
ld1 {v3.8b}, [x0]
.endif
sub x0, x0, x1, lsl #1
bl hevc_loop_filter_chroma_body_\bitdepth\()_neon
.if \bitdepth > 8
st1 {v1.8h}, [x0], x1
st1 {v2.8h}, [x0]
.else
st1 {v1.8b}, [x0], x1
st1 {v2.8b}, [x0]
.endif
1: ret x4
endfunc
.endm
.macro hevc_v_loop_filter_chroma bitdepth
function ff_hevc_v_loop_filter_chroma_\bitdepth\()_neon, export=1
hevc_loop_filter_chroma_start \bitdepth
.if \bitdepth > 8
sub x0, x0, #4
add x3, x0, x1
lsl x1, x1, #1
ld1 {v0.d}[0], [x0], x1
ld1 {v1.d}[0], [x3], x1
ld1 {v2.d}[0], [x0], x1
ld1 {v3.d}[0], [x3], x1
ld1 {v0.d}[1], [x0], x1
ld1 {v1.d}[1], [x3], x1
ld1 {v2.d}[1], [x0], x1
ld1 {v3.d}[1], [x3], x1
transpose_4x8H v0, v1, v2, v3, v28, v29, v30, v31
.else
sub x0, x0, #2
add x3, x0, x1
lsl x1, x1, #1
ld1 {v0.s}[0], [x0], x1
ld1 {v1.s}[0], [x3], x1
ld1 {v2.s}[0], [x0], x1
ld1 {v3.s}[0], [x3], x1
ld1 {v0.s}[1], [x0], x1
ld1 {v1.s}[1], [x3], x1
ld1 {v2.s}[1], [x0], x1
ld1 {v3.s}[1], [x3], x1
transpose_4x8B v0, v1, v2, v3, v28, v29, v30, v31
.endif
sub x0, x0, x1, lsl #2
sub x3, x3, x1, lsl #2
bl hevc_loop_filter_chroma_body_\bitdepth\()_neon
.if \bitdepth > 8
transpose_4x8H v0, v1, v2, v3, v28, v29, v30, v31
st1 {v0.d}[0], [x0], x1
st1 {v1.d}[0], [x3], x1
st1 {v2.d}[0], [x0], x1
st1 {v3.d}[0], [x3], x1
st1 {v0.d}[1], [x0], x1
st1 {v1.d}[1], [x3], x1
st1 {v2.d}[1], [x0], x1
st1 {v3.d}[1], [x3]
.else
transpose_4x8B v0, v1, v2, v3, v28, v29, v30, v31
st1 {v0.s}[0], [x0], x1
st1 {v1.s}[0], [x3], x1
st1 {v2.s}[0], [x0], x1
st1 {v3.s}[0], [x3], x1
st1 {v0.s}[1], [x0], x1
st1 {v1.s}[1], [x3], x1
st1 {v2.s}[1], [x0], x1
st1 {v3.s}[1], [x3]
.endif
1: ret x4
endfunc
.endm
hevc_h_loop_filter_chroma 8
hevc_h_loop_filter_chroma 10
hevc_h_loop_filter_chroma 12
hevc_v_loop_filter_chroma 8
hevc_v_loop_filter_chroma 10
hevc_v_loop_filter_chroma 12
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