/* * Copyright (c) 2024 Institue of Software Chinese Academy of Sciences (ISCAS). * * 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 vsetvlstatic8 len .if \len <= 4 vsetivli zero, \len, e8, mf4, ta, ma .elseif \len <= 8 vsetivli zero, \len, e8, mf2, ta, ma .elseif \len <= 16 vsetivli zero, \len, e8, m1, ta, ma .elseif \len <= 31 vsetivli zero, \len, e8, m2, ta, ma .endif .endm .macro vsetvlstatic16 len .if \len <= 4 vsetivli zero, \len, e16, mf2, ta, ma .elseif \len <= 8 vsetivli zero, \len, e16, m1, ta, ma .elseif \len <= 16 vsetivli zero, \len, e16, m2, ta, ma .endif .endm .macro vp8_idct_dc_add vlse32.v v0, (a0), a2 lh a5, 0(a1) sh zero, 0(a1) addi a5, a5, 4 srai t1, a5, 3 vsetivli zero, 4*4, e16, m2, ta, ma vzext.vf2 v2, v0 vadd.vx v2, v2, t1 vmax.vx v2, v2, zero vsetvli zero, zero, e8, m1, ta, ma vnclipu.wi v0, v2, 0 vsetivli zero, 4, e8, mf4, ta, ma vsse32.v v0, (a0), a2 .endm .macro vp8_idct_dc_addy vp8_idct_dc_add addi a0, a0, 4 addi a1, a1, 32 .endm func ff_vp8_idct_dc_add_rvv, zve32x vsetivli zero, 4, e8, mf4, ta, ma vp8_idct_dc_add ret endfunc func ff_vp8_idct_dc_add4y_rvv, zve32x vsetivli zero, 4, e8, mf4, ta, ma .rept 3 vp8_idct_dc_addy .endr vp8_idct_dc_add ret endfunc func ff_vp8_idct_dc_add4uv_rvv, zve32x vsetivli zero, 4, e8, mf4, ta, ma vp8_idct_dc_addy vp8_idct_dc_add addi a0, a0, -4 sh2add a0, a2, a0 addi a1, a1, 32 vp8_idct_dc_addy vp8_idct_dc_add ret endfunc .macro bilin_load dst len type mn .ifc \type,v add t5, a2, a3 .else addi t5, a2, 1 .endif vle8.v \dst, (a2) vle8.v v2, (t5) vwmulu.vx v28, \dst, t1 vwmaccu.vx v28, \mn, v2 vwaddu.wx v24, v28, t4 vnsra.wi \dst, v24, 3 .endm .macro put_vp8_bilin_h_v len type mn func ff_put_vp8_bilin\len\()_\type\()_rvv, zve32x vsetvlstatic8 \len li t1, 8 li t4, 4 sub t1, t1, \mn 1: addi a4, a4, -1 bilin_load v0, \len, \type, \mn vse8.v v0, (a0) add a2, a2, a3 add a0, a0, a1 bnez a4, 1b ret endfunc .endm .macro put_vp8_bilin_hv len func ff_put_vp8_bilin\len\()_hv_rvv, zve32x vsetvlstatic8 \len li t3, 8 sub t1, t3, a5 sub t2, t3, a6 li t4, 4 bilin_load v4, \len, h, a5 add a2, a2, a3 1: addi a4, a4, -1 vwmulu.vx v20, v4, t2 bilin_load v4, \len, h, a5 vwmaccu.vx v20, a6, v4 vwaddu.wx v24, v20, t4 vnsra.wi v0, v24, 3 vse8.v v0, (a0) add a2, a2, a3 add a0, a0, a1 bnez a4, 1b ret endfunc .endm const subpel_filters .byte 0, -6, 123, 12, -1, 0 .byte 2, -11, 108, 36, -8, 1 .byte 0, -9, 93, 50, -6, 0 .byte 3, -16, 77, 77, -16, 3 .byte 0, -6, 50, 93, -9, 0 .byte 1, -8, 36, 108, -11, 2 .byte 0, -1, 12, 123, -6, 0 endconst .macro epel_filter size type lla t2, subpel_filters .ifc \type,v addi t0, a6, -1 .else addi t0, a5, -1 .endif li t1, 6 mul t0, t0, t1 add t0, t0, t2 .irp n,1,2,3,4 lb t\n, \n(t0) .endr .ifc \size,6 lb t5, 5(t0) lb t0, (t0) .endif .endm .macro epel_load dst len size type .ifc \type,v mv a5, a3 .else li a5, 1 .endif sub t6, a2, a5 add a7, a2, a5 vle8.v v24, (a2) vle8.v v22, (t6) vle8.v v26, (a7) add a7, a7, a5 vle8.v v28, (a7) vwmulu.vx v16, v24, t2 vwmulu.vx v20, v26, t3 .ifc \size,6 sub t6, t6, a5 add a7, a7, a5 vle8.v v24, (t6) vle8.v v26, (a7) vwmaccu.vx v16, t0, v24 vwmaccu.vx v16, t5, v26 .endif li t6, 64 vwmaccsu.vx v16, t1, v22 vwmaccsu.vx v16, t4, v28 vwadd.wx v16, v16, t6 vsetvlstatic16 \len vwadd.vv v24, v16, v20 vnsra.wi v24, v24, 7 vmax.vx v24, v24, zero vsetvlstatic8 \len vnclipu.wi \dst, v24, 0 .endm .macro epel_load_inc dst len size type epel_load \dst \len \size \type add a2, a2, a3 .endm .macro epel len size type func ff_put_vp8_epel\len\()_\type\()\size\()_rvv, zve32x epel_filter \size \type vsetvlstatic8 \len 1: addi a4, a4, -1 epel_load_inc v30 \len \size \type vse8.v v30, (a0) add a0, a0, a1 bnez a4, 1b ret endfunc .endm .irp len,16,8,4 put_vp8_bilin_h_v \len h a5 put_vp8_bilin_h_v \len v a6 put_vp8_bilin_hv \len epel \len 6 h epel \len 4 h epel \len 6 v epel \len 4 v .endr