It seems like something overflowed, I'll take a look at it...
Rémi Denis-Courmont <r...@remlab.net> 于2024年11月18日周一 00:51写道：
> This reverts commit 5bc3b7f51308b8027e5468ef60d8336a960193e2.
>
> put_chroma_mc4, put_chroma_mc8 and avg_chroma_mc8 are confirmed to
> break `fate-rv40`. It is probably just luck that avg_chroma_mc4 does
> not also fail.
>
> Fixes #11306.
> ---
> libavcodec/riscv/Makefile | 2 -
> libavcodec/riscv/rv40dsp_init.c | 51 -----
> libavcodec/riscv/rv40dsp_rvv.S | 375 --------------------------------
> libavcodec/rv34dsp.h | 1 -
> libavcodec/rv40dsp.c | 2 -
> 5 files changed, 431 deletions(-)
> delete mode 100644 libavcodec/riscv/rv40dsp_init.c
> delete mode 100644 libavcodec/riscv/rv40dsp_rvv.S
>
> diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile
> index 1f1fa03329..58e14bb972 100644
> --- a/libavcodec/riscv/Makefile
> +++ b/libavcodec/riscv/Makefile
> @@ -58,8 +58,6 @@ RV-OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_rvi.o
> RVV-OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_rvv.o
> OBJS-$(CONFIG_RV34DSP) += riscv/rv34dsp_init.o
> RVV-OBJS-$(CONFIG_RV34DSP) += riscv/rv34dsp_rvv.o
> -OBJS-$(CONFIG_RV40_DECODER) += riscv/rv40dsp_init.o
> -RVV-OBJS-$(CONFIG_RV40_DECODER) += riscv/rv40dsp_rvv.o
> RV-OBJS-$(CONFIG_STARTCODE) += riscv/startcode_rvb.o
> RVV-OBJS-$(CONFIG_STARTCODE) += riscv/startcode_rvv.o
> OBJS-$(CONFIG_SVQ1_ENCODER) += riscv/svqenc_init.o
> diff --git a/libavcodec/riscv/rv40dsp_init.c
> b/libavcodec/riscv/rv40dsp_init.c
> deleted file mode 100644
> index 6aba571794..0000000000
> --- a/libavcodec/riscv/rv40dsp_init.c
> +++ /dev/null
> @@ -1,51 +0,0 @@
> -/*
> - * 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 "config.h"
> -
> -#include "libavutil/attributes.h"
> -#include "libavutil/cpu.h"
> -#include "libavutil/riscv/cpu.h"
> -#include "libavcodec/rv34dsp.h"
> -
> -void ff_put_rv40_chroma_mc8_rvv(uint8_t *dst, const uint8_t *src,
> ptrdiff_t stride,
> - int h, int x, int y);
> -void ff_put_rv40_chroma_mc4_rvv(uint8_t *dst, const uint8_t *src,
> ptrdiff_t stride,
> - int h, int x, int y);
> -
> -void ff_avg_rv40_chroma_mc8_rvv(uint8_t *dst, const uint8_t *src,
> ptrdiff_t stride,
> - int h, int x, int y);
> -void ff_avg_rv40_chroma_mc4_rvv(uint8_t *dst, const uint8_t *src,
> ptrdiff_t stride,
> - int h, int x, int y);
> -
> -av_cold void ff_rv40dsp_init_riscv(RV34DSPContext *c)
> -{
> -#if HAVE_RVV
> - int flags = av_get_cpu_flags();
> -
> - if ((flags & AV_CPU_FLAG_RVV_I32) && ff_rv_vlen_least(128) &&
> - (flags & AV_CPU_FLAG_RVB)) {
> - c->put_chroma_pixels_tab[0] = ff_put_rv40_chroma_mc8_rvv;
> - c->put_chroma_pixels_tab[1] = ff_put_rv40_chroma_mc4_rvv;
> - c->avg_chroma_pixels_tab[0] = ff_avg_rv40_chroma_mc8_rvv;
> - c->avg_chroma_pixels_tab[1] = ff_avg_rv40_chroma_mc4_rvv;
> - }
> -#endif
> -}
> diff --git a/libavcodec/riscv/rv40dsp_rvv.S
> b/libavcodec/riscv/rv40dsp_rvv.S
> deleted file mode 100644
> index ca431eb8ab..0000000000
> --- a/libavcodec/riscv/rv40dsp_rvv.S
> +++ /dev/null
> @@ -1,375 +0,0 @@
> -/*
> - * 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 manual_avg dst src1 src2
> - vadd.vv \dst, \src1, \src2
> - vadd.vi \dst, \dst, 1
> - vsrl.vi \dst, \dst, 1
> -.endm
> -
> -.macro do_chroma_mc type unroll
> - csrwi vxrm, 2
> - 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
> - vsetvli t3, t6, 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, (1 + \unroll)
> -1: # if (xy != 0)
> - add a4, a1, t4
> - vsetvli zero, a5, e8, m1, ta, ma
> - .ifc \unroll,1
> - addi t2, t2, 4
> - .else
> - addi t2, t2, 2
> - .endif
> - vle8.v v10, (a4)
> - add a4, a4, a2
> - vslide1down.vx v11, v10, t5
> - vsetvli zero, t6, 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)
> - vsetvli zero, t6, 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
> - vsetvli zero, t6, 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)
> - vsetvli zero, t6, 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
> - vsetvli zero, t6, e8, m1, ta, ma
> - vwmulu.vx v12, v14, a6
> - vwmaccu.vx v10, t1, v15
> - vwmaccu.vx v12, a7, v15
> - vnclipu.wi v15, v8, 6
> - .ifc \type,avg
> - vle8.v v9, (a0)
> - manual_avg v15, v15, v9
> - .endif
> - vse8.v v15, (a0)
> - add a0, a0, a2
> - vnclipu.wi v8, v10, 6
> - .ifc \type,avg
> - vle8.v v9, (a0)
> - manual_avg v8, v8, v9
> - .endif
> - add t4, t4, t3
> - vse8.v v8, (a0)
> - add a0, a0, a2
> - .ifc \unroll,1
> - vsetvli zero, a5, e8, m1, ta, ma
> - vle8.v v14, (a4)
> - vsetvli zero, t6, 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
> - vsetvli zero, t6, 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)
> - vsetvli zero, t6, e8, m1, ta, ma
> - vwmaccu.vx v16, t0, v14
> - vsetvli zero, a5, e8, m1, ta, ma
> - vslide1down.vx v14, v14, t5
> - vsetvli zero, t6, e8, m1, ta, ma
> - vwmaccu.vx v16, t1, v14
> - vnclipu.wi v8, v12, 6
> - .ifc \type,avg
> - vle8.v v9, (a0)
> - manual_avg v8, v8, v9
> - .endif
> - vse8.v v8, (a0)
> - add a0, a0, a2
> - vnclipu.wi v8, v16, 6
> - .ifc \type,avg
> - vle8.v v9, (a0)
> - manual_avg v8, v8, v9
> - .endif
> - vse8.v v8, (a0)
> - add a0, a0, a2
> - .endif
> - 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, (1 + \unroll)
> -3: # if ((x8 - xy) == 0 && (y8 -xy) != 0)
> - add a5, a1, a4
> - vsetvli zero, zero, e8, m1, ta, ma
> - .ifc \unroll,1
> - addi t1, t1, 4
> - .else
> - addi t1, t1, 2
> - .endif
> - 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
> - add a4, a4, a7
> - vwmaccu.vx v12, t0, v9
> - vnclipu.wi v15, v10, 6
> - vwmulu.vx v10, v9, a6
> - vnclipu.wi v9, v12, 6
> - .ifc \type,avg
> - vle8.v v16, (a0)
> - manual_avg v15, v15, v16
> - .endif
> - vse8.v v15, (a0)
> - add a0, a0, a2
> - .ifc \type,avg
> - vle8.v v16, (a0)
> - manual_avg v9, v9, v16
> - .endif
> - vse8.v v9, (a0)
> - add a0, a0, a2
> - .ifc \unroll,1
> - vle8.v v8, (t2)
> - vle8.v v14, (a5)
> - vwmaccu.vx v10, t0, v8
> - vwmulu.vx v12, v8, a6
> - vnclipu.wi v8, v10, 6
> - vwmaccu.vx v12, t0, v14
> - .ifc \type,avg
> - vle8.v v16, (a0)
> - manual_avg v8, v8, v16
> - .endif
> - vse8.v v8, (a0)
> - add a0, a0, a2
> - vnclipu.wi v8, v12, 6
> - .ifc \type,avg
> - vle8.v v16, (a0)
> - manual_avg v8, v8, v16
> - .endif
> - vse8.v v8, (a0)
> - add a0, a0, a2
> - .endif
> - 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, (1 + \unroll)
> -5: # if ((x8 - xy) != 0 && (y8 -xy) == 0)
> - add a5, a1, a4
> - vsetvli zero, t0, e8, m1, ta, ma
> - .ifc \unroll,1
> - addi t2, t2, 4
> - .else
> - addi t2, t2, 2
> - .endif
> - vle8.v v8, (a5)
> - add a5, a5, a2
> - vslide1down.vx v9, v8, t5
> - vsetvli zero, t6, 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
> - vsetvli zero, t6, e8, m1, ta, ma
> - vwmulu.vx v12, v8, a6
> - vwmaccu.vx v12, a7, v9
> - vnclipu.wi v16, v10, 6
> - .ifc \type,avg
> - vle8.v v18, (a0)
> - manual_avg v16, v16, v18
> - .endif
> - vse8.v v16, (a0)
> - add a0, a0, a2
> - vnclipu.wi v10, v12, 6
> - .ifc \type,avg
> - vle8.v v18, (a0)
> - manual_avg v10, v10, v18
> - .endif
> - add a4, a4, t1
> - vse8.v v10, (a0)
> - add a0, a0, a2
> - .ifc \unroll,1
> - vsetvli zero, t0, e8, m1, ta, ma
> - vle8.v v8, (a5)
> - add a5, a5, a2
> - vslide1down.vx v9, v8, t5
> - vsetvli zero, t6, 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)
> - vslide1down.vx v9, v8, t5
> - vsetvli zero, t6, e8, m1, ta, ma
> - vwmulu.vx v12, v8, a6
> - vnclipu.wi v8, v14, 6
> - vwmaccu.vx v12, a7, v9
> - .ifc \type,avg
> - vle8.v v18, (a0)
> - manual_avg v8, v8, v18
> - .endif
> - vse8.v v8, (a0)
> - add a0, a0, a2
> - vnclipu.wi v8, v12, 6
> - .ifc \type,avg
> - vle8.v v18, (a0)
> - manual_avg v8, v8, v18
> - .endif
> - vse8.v v8, (a0)
> - add a0, a0, a2
> - .endif
> - blt t2, a3, 5b
> - j 8f
> -6:
> - blez a3, 8f
> - li a4, 0
> - li t2, 0
> - slli a7, a2, (1 + \unroll)
> -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
> - .ifc \unroll,1
> - addi t2, t2, 4
> - .else
> - addi t2, t2, 2
> - .endif
> - 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
> - vnclipu.wi v13, v10, 6
> - vwmulu.vx v10, v8, a6
> - .ifc \type,avg
> - vle8.v v18, (a5)
> - manual_avg v13, v13, v18
> - .endif
> - vse8.v v13, (a5)
> - add a5, a5, a2
> - vnclipu.wi v8, v10, 6
> - .ifc \type,avg
> - vle8.v v18, (a5)
> - manual_avg v8, v8, v18
> - .endif
> - vse8.v v8, (a5)
> - add a5, a5, a2
> - .ifc \unroll,1
> - vle8.v v9, (t1)
> - vle8.v v12, (t0)
> - vwmulu.vx v10, v9, a6
> - vnclipu.wi v8, v10, 6
> - vwmulu.vx v10, v12, a6
> - .ifc \type,avg
> - vle8.v v18, (a5)
> - manual_avg v8, v8, v18
> - .endif
> - vse8.v v8, (a5)
> - add a5, a5, a2
> - vnclipu.wi v8, v10, 6
> - .ifc \type,avg
> - vle8.v v18, (a5)
> - manual_avg v8, v8, v18
> - .endif
> - vse8.v v8, (a5)
> - .endif
> - blt t2, a3, 7b
> -8:
> - ret
> -.endm
> -
> -func ff_put_rv40_chroma_mc_rvv, zve32x, zba
> -11:
> - li a7, 3
> - blt a3, a7, 12f
> - do_chroma_mc put 1
> -12:
> - do_chroma_mc put 0
> -endfunc
> -
> -func ff_avg_rv40_chroma_mc_rvv, zve32x, zba
> -21:
> - li a7, 3
> - blt a3, a7, 22f
> - do_chroma_mc avg 1
> -22:
> - do_chroma_mc avg 0
> -endfunc
> -
> -func ff_put_rv40_chroma_mc8_rvv, zve32x
> - lpad 0
> - li t6, 8
> - j 11b
> -endfunc
> -
> -func ff_put_rv40_chroma_mc4_rvv, zve32x
> - lpad 0
> - li t6, 4
> - j 11b
> -endfunc
> -
> -func ff_avg_rv40_chroma_mc8_rvv, zve32x
> - lpad 0
> - li t6, 8
> - j 21b
> -endfunc
> -
> -func ff_avg_rv40_chroma_mc4_rvv, zve32x
> - lpad 0
> - li t6, 4
> - j 21b
> -endfunc
> diff --git a/libavcodec/rv34dsp.h b/libavcodec/rv34dsp.h
> index d59b3c2732..b15424d4ae 100644
> --- a/libavcodec/rv34dsp.h
> +++ b/libavcodec/rv34dsp.h
> @@ -83,7 +83,6 @@ void ff_rv34dsp_init_riscv(RV34DSPContext *c);
> void ff_rv34dsp_init_x86(RV34DSPContext *c);
>
> void ff_rv40dsp_init_aarch64(RV34DSPContext *c);
> -void ff_rv40dsp_init_riscv(RV34DSPContext *c);
> void ff_rv40dsp_init_x86(RV34DSPContext *c);
> void ff_rv40dsp_init_arm(RV34DSPContext *c);
>
> diff --git a/libavcodec/rv40dsp.c b/libavcodec/rv40dsp.c
> index 970faec5de..f0208b16ea 100644
> --- a/libavcodec/rv40dsp.c
> +++ b/libavcodec/rv40dsp.c
> @@ -709,8 +709,6 @@ av_cold void ff_rv40dsp_init(RV34DSPContext *c)
> ff_rv40dsp_init_aarch64(c);
> #elif ARCH_ARM
> ff_rv40dsp_init_arm(c);
> -#elif ARCH_RISCV
> - ff_rv40dsp_init_riscv(c);
> #elif ARCH_X86
> ff_rv40dsp_init_x86(c);
> #endif
> --
> 2.45.2
>
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