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/*
* Copyright (c) 2023 SiFive, Inc. All rights reserved.
*
* 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/riscv/asm.S"
.macro h264_chroma_mc8 type
func h264_\type\()_chroma_mc8_rvv, zve32x
csrw vxrm, zero
slli t2, a5, 3
mul t1, a5, a4
sh3add a5, a4, t2
slli a4, a4, 3
sub a5, t1, a5
sub a7, a4, t1
addi a6, a5, 64
sub t0, t2, t1
vsetivli t3, 8, e8, m1, ta, mu
beqz t1, 2f
blez a3, 8f
li t4, 0
li t2, 0
li t5, 1
addi a5, t3, 1
slli t3, a2, 2
1: # if (xy != 0)
add a4, a1, t4
vsetvli zero, a5, e8, m1, ta, ma
addi t2, t2, 4
vle8.v v10, (a4)
add a4, a4, a2
vslide1down.vx v11, v10, t5
vsetivli zero, 8, e8, m1, ta, ma
vwmulu.vx v8, v10, a6
vwmaccu.vx v8, a7, v11
vsetvli zero, a5, e8, m1, ta, ma
vle8.v v12, (a4)
vsetivli zero, 8, e8, m1, ta, ma
add a4, a4, a2
vwmaccu.vx v8, t0, v12
vsetvli zero, a5, e8, m1, ta, ma
vslide1down.vx v13, v12, t5
vsetivli zero, 8, e8, m1, ta, ma
vwmulu.vx v10, v12, a6
vwmaccu.vx v8, t1, v13
vwmaccu.vx v10, a7, v13
vsetvli zero, a5, e8, m1, ta, ma
vle8.v v14, (a4)
vsetivli zero, 8, e8, m1, ta, ma
add a4, a4, a2
vwmaccu.vx v10, t0, v14
vsetvli zero, a5, e8, m1, ta, ma
vslide1down.vx v15, v14, t5
vsetivli zero, 8, e8, m1, ta, ma
vwmulu.vx v12, v14, a6
vwmaccu.vx v10, t1, v15
vwmaccu.vx v12, a7, v15
vsetvli zero, a5, e8, m1, ta, ma
vle8.v v14, (a4)
vsetivli zero, 8, e8, m1, ta, ma
add a4, a4, a2
vwmaccu.vx v12, t0, v14
vsetvli zero, a5, e8, m1, ta, ma
vslide1down.vx v15, v14, t5
vsetivli zero, 8, e8, m1, ta, ma
vwmulu.vx v16, v14, a6
vwmaccu.vx v12, t1, v15
vwmaccu.vx v16, a7, v15
vsetvli zero, a5, e8, m1, ta, ma
vle8.v v14, (a4)
vsetivli zero, 8, e8, m1, ta, ma
add a4, a0, t4
add t4, t4, t3
vwmaccu.vx v16, t0, v14
vsetvli zero, a5, e8, m1, ta, ma
vslide1down.vx v14, v14, t5
vsetivli zero, 8, e8, m1, ta, ma
vnclipu.wi v15, v8, 6
vwmaccu.vx v16, t1, v14
.ifc \type,avg
vle8.v v9, (a4)
vaaddu.vv v15, v15, v9
.endif
vse8.v v15, (a4)
add a4, a4, a2
vnclipu.wi v8, v10, 6
.ifc \type,avg
vle8.v v9, (a4)
vaaddu.vv v8, v8, v9
.endif
vse8.v v8, (a4)
add a4, a4, a2
vnclipu.wi v8, v12, 6
.ifc \type,avg
vle8.v v9, (a4)
vaaddu.vv v8, v8, v9
.endif
vse8.v v8, (a4)
add a4, a4, a2
vnclipu.wi v8, v16, 6
.ifc \type,avg
vle8.v v9, (a4)
vaaddu.vv v8, v8, v9
.endif
vse8.v v8, (a4)
blt t2, a3, 1b
j 8f
2:
bnez a4, 4f
beqz t2, 4f
blez a3, 8f
li a4, 0
li t1, 0
slli a7, a2, 2
3: # if ((x8 - xy) == 0 && (y8 -xy) != 0)
add a5, a1, a4
vsetvli zero, zero, e8, m1, ta, ma
addi t1, t1, 4
vle8.v v8, (a5)
add a5, a5, a2
add t2, a5, a2
vwmulu.vx v10, v8, a6
vle8.v v8, (a5)
vwmulu.vx v12, v8, a6
vle8.v v9, (t2)
add t2, t2, a2
add a5, t2, a2
vwmaccu.vx v10, t0, v8
vle8.v v8, (t2)
vle8.v v14, (a5)
add a5, a0, a4
add a4, a4, a7
vwmaccu.vx v12, t0, v9
vnclipu.wi v15, v10, 6
vwmulu.vx v10, v9, a6
.ifc \type,avg
vle8.v v16, (a5)
vaaddu.vv v15, v15, v16
.endif
vse8.v v15, (a5)
add a5, a5, a2
vnclipu.wi v9, v12, 6
vwmaccu.vx v10, t0, v8
vwmulu.vx v12, v8, a6
.ifc \type,avg
vle8.v v16, (a5)
vaaddu.vv v9, v9, v16
.endif
vse8.v v9, (a5)
add a5, a5, a2
vnclipu.wi v8, v10, 6
vwmaccu.vx v12, t0, v14
.ifc \type,avg
vle8.v v16, (a5)
vaaddu.vv v8, v8, v16
.endif
vse8.v v8, (a5)
add a5, a5, a2
vnclipu.wi v8, v12, 6
.ifc \type,avg
vle8.v v16, (a5)
vaaddu.vv v8, v8, v16
.endif
vse8.v v8, (a5)
blt t1, a3, 3b
j 8f
4:
beqz a4, 6f
bnez t2, 6f
blez a3, 8f
li a4, 0
li t2, 0
addi t0, t3, 1
slli t1, a2, 2
5: # if ((x8 - xy) != 0 && (y8 -xy) == 0)
add a5, a1, a4
vsetvli zero, t0, e8, m1, ta, ma
addi t2, t2, 4
vle8.v v8, (a5)
add a5, a5, a2
vslide1down.vx v9, v8, t5
vsetivli zero, 8, e8, m1, ta, ma
vwmulu.vx v10, v8, a6
vwmaccu.vx v10, a7, v9
vsetvli zero, t0, e8, m1, ta, ma
vle8.v v8, (a5)
add a5, a5, a2
vslide1down.vx v9, v8, t5
vsetivli zero, 8, e8, m1, ta, ma
vwmulu.vx v12, v8, a6
vwmaccu.vx v12, a7, v9
vsetvli zero, t0, e8, m1, ta, ma
vle8.v v8, (a5)
add a5, a5, a2
vslide1down.vx v9, v8, t5
vsetivli zero, 8, e8, m1, ta, ma
vwmulu.vx v14, v8, a6
vwmaccu.vx v14, a7, v9
vsetvli zero, t0, e8, m1, ta, ma
vle8.v v8, (a5)
add a5, a0, a4
add a4, a4, t1
vslide1down.vx v9, v8, t5
vsetivli zero, 8, e8, m1, ta, ma
vnclipu.wi v16, v10, 6
.ifc \type,avg
vle8.v v18, (a5)
vaaddu.vv v16, v16, v18
.endif
vse8.v v16, (a5)
add a5, a5, a2
vnclipu.wi v10, v12, 6
vwmulu.vx v12, v8, a6
.ifc \type,avg
vle8.v v18, (a5)
vaaddu.vv v10, v10, v18
.endif
vse8.v v10, (a5)
add a5, a5, a2
vnclipu.wi v8, v14, 6
vwmaccu.vx v12, a7, v9
.ifc \type,avg
vle8.v v18, (a5)
vaaddu.vv v8, v8, v18
.endif
vse8.v v8, (a5)
add a5, a5, a2
vnclipu.wi v8, v12, 6
.ifc \type,avg
vle8.v v18, (a5)
vaaddu.vv v8, v8, v18
.endif
vse8.v v8, (a5)
blt t2, a3, 5b
j 8f
6:
blez a3, 8f
li a4, 0
li t2, 0
slli a7, a2, 2
7: # the final else, none of the above conditions are met
add t0, a1, a4
vsetvli zero, zero, e8, m1, ta, ma
add a5, a0, a4
add a4, a4, a7
addi t2, t2, 4
vle8.v v8, (t0)
add t0, t0, a2
add t1, t0, a2
vwmulu.vx v10, v8, a6
vle8.v v8, (t0)
add t0, t1, a2
vle8.v v9, (t1)
vle8.v v12, (t0)
vnclipu.wi v13, v10, 6
vwmulu.vx v10, v8, a6
.ifc \type,avg
vle8.v v18, (a5)
vaaddu.vv v13, v13, v18
.endif
vse8.v v13, (a5)
add a5, a5, a2
vnclipu.wi v8, v10, 6
vwmulu.vx v10, v9, a6
.ifc \type,avg
vle8.v v18, (a5)
vaaddu.vv v8, v8, v18
.endif
vse8.v v8, (a5)
add a5, a5, a2
vnclipu.wi v8, v10, 6
vwmulu.vx v10, v12, a6
.ifc \type,avg
vle8.v v18, (a5)
vaaddu.vv v8, v8, v18
.endif
vse8.v v8, (a5)
add a5, a5, a2
vnclipu.wi v8, v10, 6
.ifc \type,avg
vle8.v v18, (a5)
vaaddu.vv v8, v8, v18
.endif
vse8.v v8, (a5)
blt t2, a3, 7b
8:
ret
endfunc
.endm
h264_chroma_mc8 put
h264_chroma_mc8 avg
|
