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/*
* Copyright © 2024 Rémi Denis-Courmont.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "libavutil/riscv/asm.S"
.macro sx rd, addr
#if (__riscv_xlen == 32)
sw \rd, \addr
#elif (__riscv_xlen == 64)
sd \rd, \addr
#else
sq \rd, \addr
#endif
.endm
func ff_h264_add_pixels4_8_rvv, zve32x
vsetivli zero, 4, e8, mf4, ta, ma
vlse32.v v8, (a0), a2
vsetivli zero, 4 * 4, e8, m1, ta, ma
vle16.v v16, (a1)
.equ offset, 0
.rept 256 / __riscv_xlen
sx zero, offset(a1)
.equ offset, offset + (__riscv_xlen / 8)
.endr
vncvt.x.x.w v24, v16
vadd.vv v8, v8, v24
vsetivli zero, 4, e8, mf4, ta, ma
vsse32.v v8, (a0), a2
ret
endfunc
func ff_h264_add_pixels4_16_rvv, zve64x
vsetivli zero, 4, e16, mf2, ta, ma
vlse64.v v8, (a0), a2
vsetivli zero, 4 * 4, e16, m2, ta, ma
vle32.v v16, (a1)
.equ offset, 0
.rept 512 / __riscv_xlen
sx zero, offset(a1)
.equ offset, offset + (__riscv_xlen / 8)
.endr
vncvt.x.x.w v24, v16
vadd.vv v8, v8, v24
vsetivli zero, 4, e16, mf2, ta, ma
vsse64.v v8, (a0), a2
ret
endfunc
func ff_h264_add_pixels8_8_rvv, zve64x
li t0, 8 * 8
vsetivli zero, 8, e8, mf2, ta, ma
vlse64.v v8, (a0), a2
vsetvli zero, t0, e8, m4, ta, ma
vle16.v v16, (a1)
.equ offset, 0
.rept 1024 / __riscv_xlen
sx zero, offset(a1)
.equ offset, offset + (__riscv_xlen / 8)
.endr
vncvt.x.x.w v24, v16
vadd.vv v8, v8, v24
vsetivli zero, 8, e8, mf2, ta, ma
vsse64.v v8, (a0), a2
ret
endfunc
func ff_h264_add_pixels8_16_rvv, zve32x
li t0, 8
vsetivli zero, 8, e16, m1, ta, ma
1:
vle32.v v16, (a1)
addi t0, t0, -1
vle16.v v8, (a0)
.equ offset, 0
.rept 256 / __riscv_xlen
sx zero, offset(a1)
.equ offset, offset + (__riscv_xlen / 8)
.endr
vncvt.x.x.w v24, v16
addi a1, a1, 8 * 4
vadd.vv v8, v8, v24
vse16.v v8, (a0)
add a0, a0, a2
bnez t0, 1b
ret
endfunc
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