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- /*
- * Loongson LSX optimized swscale
- *
- * Copyright (c) 2023 Loongson Technology Corporation Limited
- * Contributed by Lu Wang <wanglu@loongson.cn>
- *
- * 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 "libavcodec/loongarch/loongson_asm.S"
- /* static void ff_yuv2planeX_8_lsx(const int16_t *filter, int filterSize,
- * const int16_t **src, uint8_t *dest, int dstW,
- * const uint8_t *dither, int offset)
- */
- function ff_yuv2planeX_8_lsx
- addi.w t1, a6, 1
- addi.w t2, a6, 2
- addi.w t3, a6, 3
- addi.w t4, a6, 4
- addi.w t5, a6, 5
- addi.w t6, a6, 6
- addi.w t7, a6, 7
- andi t0, a6, 7
- andi t1, t1, 7
- andi t2, t2, 7
- andi t3, t3, 7
- andi t4, t4, 7
- andi t5, t5, 7
- andi t6, t6, 7
- andi t7, t7, 7
- ldx.bu t0, a5, t0
- ldx.bu t1, a5, t1
- ldx.bu t2, a5, t2
- ldx.bu t3, a5, t3
- ldx.bu t4, a5, t4
- ldx.bu t5, a5, t5
- ldx.bu t6, a5, t6
- ldx.bu t7, a5, t7
- vreplgr2vr.w vr0, t0
- vreplgr2vr.w vr1, t1
- vreplgr2vr.w vr2, t2
- vreplgr2vr.w vr3, t3
- vreplgr2vr.w vr4, t4
- vreplgr2vr.w vr5, t5
- vreplgr2vr.w vr6, t6
- vreplgr2vr.w vr7, t7
- vilvl.w vr0, vr2, vr0
- vilvl.w vr4, vr6, vr4
- vilvl.w vr1, vr3, vr1
- vilvl.w vr5, vr7, vr5
- vilvl.d vr12, vr4, vr0
- vilvl.d vr13, vr5, vr1
- li.w t5, 0
- li.w t8, 8
- bge a4, t8, .WIDTH8
- blt zero, a4, .WIDTH
- b .END
- .WIDTH8:
- li.d t1, 0
- li.d t4, 0
- vslli.w vr2, vr12, 12
- vslli.w vr3, vr13, 12
- move t3, a0
- .FILTERSIZE8:
- ldx.d t2, a2, t1
- vldx vr4, t2, t5
- vldrepl.h vr5, t3, 0
- vmaddwev.w.h vr2, vr4, vr5
- vmaddwod.w.h vr3, vr4, vr5
- addi.d t1, t1, 8
- addi.d t3, t3, 2
- addi.d t4, t4, 1
- blt t4, a1, .FILTERSIZE8
- vsrai.w vr2, vr2, 19
- vsrai.w vr3, vr3, 19
- vclip255.w vr2, vr2
- vclip255.w vr3, vr3
- vpickev.h vr2, vr3, vr2
- vpickev.b vr2, vr2, vr2
- vbsrl.v vr3, vr2, 4
- vilvl.b vr2, vr3, vr2
- fst.d f2, a3, 0
- addi.d t5, t5, 16
- addi.d a4, a4, -8
- addi.d a3, a3, 8
- bge a4, t8, .WIDTH8
- blt zero, a4, .WIDTH
- b .END
- .WIDTH:
- li.d t1, 0
- li.d t4, 0
- vslli.w vr2, vr12, 12
- vslli.w vr3, vr13, 12
- .FILTERSIZE:
- ldx.d t2, a2, t1
- vldx vr4, t2, t5
- vldrepl.h vr5, a0, 0
- vmaddwev.w.h vr2, vr4, vr5
- vmaddwod.w.h vr3, vr4, vr5
- addi.d t1, t1, 8
- addi.d a0, a0, 2
- addi.d t4, t4, 1
- blt t4, a1, .FILTERSIZE
- vsrai.w vr2, vr2, 19
- vsrai.w vr3, vr3, 19
- vclip255.w vr2, vr2
- vclip255.w vr3, vr3
- vpickev.h vr2, vr3, vr2
- vpickev.b vr2, vr2, vr2
- vbsrl.v vr3, vr2, 4
- vilvl.b vr2, vr3, vr2
- .DEST:
- vstelm.b vr2, a3, 0, 0
- vbsrl.v vr2, vr2, 1
- addi.d a4, a4, -1
- addi.d a3, a3, 1
- blt zero, a4, .DEST
- .END:
- endfunc
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