Re: [FFmpeg-devel] [PATCH 2/4] lavc/rv34dsp: R-V V rv34_inv_transform_dc
Hi, I think this breaks the build for RV32, and it lacks checks for the vector length. Also fractional multipler should never be smaller than the ratio of the specified element size to the largest element size used in the function. Here it is largelly inconsequential, but for instance "e32, mf4" and "e64, mf2" are invalid. -- 雷米‧德尼-库尔蒙 http://www.remlab.net/ ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-devel] [PATCH 2/4] lavc/rv34dsp: R-V V rv34_inv_transform_dc
> Also fractional multipler should never be smaller than the ratio of the
> specified element size to the largest element size used in the function.
Here
> it is largelly inconsequential, but for instance "e32, mf4" and "e64,
mf2" are
> invalid.
Thanks, I indeed almost forgot about this part
> I think this breaks the build for RV32
Okay, modified in the reply
> it lacks checks for the vector length.
In the rv34dsp_init.c, there's a check with ff_get_rv_vlenb() >= 16.
Doesn't this already check the vector length?
Rémi Denis-Courmont 于2024年2月1日周四 00:31写道：
> Hi,
>
> I think this breaks the build for RV32, and it lacks checks for the vector
> length.
>
> Also fractional multipler should never be smaller than the ratio of the
> specified element size to the largest element size used in the function.
> Here
> it is largelly inconsequential, but for instance "e32, mf4" and "e64, mf2"
> are
> invalid.
>
> --
> 雷米‧德尼-库尔蒙
> http://www.remlab.net/
>
>
>
> ___
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
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> ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
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From 538ff8b20ead25d95b8507e318207b19d89a63c2 Mon Sep 17 00:00:00 2001
From: sunyuechi
Date: Wed, 31 Jan 2024 19:03:20 +0800
Subject: [PATCH 2/4] lavc/rv34dsp: R-V V rv34_inv_transform_dc
C908:
rv34_inv_transform_dc_c: 35.5
rv34_inv_transform_dc_rvv_i32: 27.0
---
libavcodec/riscv/Makefile | 2 ++
libavcodec/riscv/rv34dsp_init.c | 39 +
libavcodec/riscv/rv34dsp_rvv.S | 38
libavcodec/rv34dsp.c| 2 ++
libavcodec/rv34dsp.h| 1 +
5 files changed, 82 insertions(+)
create mode 100644 libavcodec/riscv/rv34dsp_init.c
create mode 100644 libavcodec/riscv/rv34dsp_rvv.S
diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile
index e15aba58f4..ffe6631cf2 100644
--- a/libavcodec/riscv/Makefile
+++ b/libavcodec/riscv/Makefile
@@ -44,6 +44,8 @@ RVV-OBJS-$(CONFIG_OPUS_DECODER) += riscv/opusdsp_rvv.o
OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_init.o
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-$(CONFIG_SVQ1_ENCODER) += riscv/svqenc_init.o
RVV-OBJS-$(CONFIG_SVQ1_ENCODER) += riscv/svqenc_rvv.o
OBJS-$(CONFIG_TAK_DECODER) += riscv/takdsp_init.o
diff --git a/libavcodec/riscv/rv34dsp_init.c b/libavcodec/riscv/rv34dsp_init.c
new file mode 100644
index 00..852c8ad9a8
--- /dev/null
+++ b/libavcodec/riscv/rv34dsp_init.c
@@ -0,0 +1,39 @@
+/*
+ * 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_rv34_inv_transform_dc_rvv(int16_t *block);
+
+av_cold void ff_rv34dsp_init_riscv(RV34DSPContext *c)
+{
+#if HAVE_RVV
+int flags = av_get_cpu_flags();
+
+if (flags & AV_CPU_FLAG_RVV_I32 && ff_get_rv_vlenb() >= 16) {
+c->rv34_inv_transform_dc = ff_rv34_inv_transform_dc_rvv;
+}
+#endif
+}
diff --git a/libavcodec/riscv/rv34dsp_rvv.S b/libavcodec/riscv/rv34dsp_rvv.S
new file mode 100644
index 00..4b7a071f7c
--- /dev/null
+++ b/libavcodec/riscv/rv34dsp_rvv.S
@@ -0,0 +1,38 @@
+/*
+ * 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 Less
Re: [FFmpeg-devel] [PATCH 2/4] lavc/rv34dsp: R-V V rv34_inv_transform_dc
Hi, I'm not sure why you're mixing element sizes this way, but the code should not even compile due to mismatched extensions. -- Rémi Denis-Courmont http://www.remlab.net/ ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-devel] [PATCH 2/4] lavc/rv34dsp: R-V V rv34_inv_transform_dc
My carelessness.. fixed it in the reply.
Rémi Denis-Courmont 于2024年2月7日周三 01:26写道：
> Hi,
>
> I'm not sure why you're mixing element sizes this way, but the code should
> not
> even compile due to mismatched extensions.
>
> --
> Rémi Denis-Courmont
> http://www.remlab.net/
>
>
>
> ___
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
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From c7013641191a05ea67b6151ce1a91393759aed12 Mon Sep 17 00:00:00 2001
From: sunyuechi
Date: Wed, 31 Jan 2024 19:03:20 +0800
Subject: [PATCH 2/4] lavc/rv34dsp: R-V V rv34_inv_transform_dc
C908:
rv34_inv_transform_dc_c: 35.5
rv34_inv_transform_dc_rvv_i32: 27.0
---
libavcodec/riscv/Makefile | 2 ++
libavcodec/riscv/rv34dsp_init.c | 39 +
libavcodec/riscv/rv34dsp_rvv.S | 38
libavcodec/rv34dsp.c| 2 ++
libavcodec/rv34dsp.h| 1 +
5 files changed, 82 insertions(+)
create mode 100644 libavcodec/riscv/rv34dsp_init.c
create mode 100644 libavcodec/riscv/rv34dsp_rvv.S
diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile
index e15aba58f4..ffe6631cf2 100644
--- a/libavcodec/riscv/Makefile
+++ b/libavcodec/riscv/Makefile
@@ -44,6 +44,8 @@ RVV-OBJS-$(CONFIG_OPUS_DECODER) += riscv/opusdsp_rvv.o
OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_init.o
RV-OBJS-$(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_SVQ1_ENCODER) += riscv/svqenc_init.o
RVV-OBJS-$(CONFIG_SVQ1_ENCODER) += riscv/svqenc_rvv.o
OBJS-$(CONFIG_TAK_DECODER) += riscv/takdsp_init.o
diff --git a/libavcodec/riscv/rv34dsp_init.c b/libavcodec/riscv/rv34dsp_init.c
new file mode 100644
index 00..852c8ad9a8
--- /dev/null
+++ b/libavcodec/riscv/rv34dsp_init.c
@@ -0,0 +1,39 @@
+/*
+ * 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_rv34_inv_transform_dc_rvv(int16_t *block);
+
+av_cold void ff_rv34dsp_init_riscv(RV34DSPContext *c)
+{
+#if HAVE_RVV
+int flags = av_get_cpu_flags();
+
+if (flags & AV_CPU_FLAG_RVV_I32 && ff_get_rv_vlenb() >= 16) {
+c->rv34_inv_transform_dc = ff_rv34_inv_transform_dc_rvv;
+}
+#endif
+}
diff --git a/libavcodec/riscv/rv34dsp_rvv.S b/libavcodec/riscv/rv34dsp_rvv.S
new file mode 100644
index 00..0011a17a22
--- /dev/null
+++ b/libavcodec/riscv/rv34dsp_rvv.S
@@ -0,0 +1,38 @@
+/*
+ * 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"
+
+func ff_rv34_inv_transform_dc_rvv, zve32x
+lht1, 0(a0)
+slli t2, t1, 7
+sub t2, t2, t1
+slli t2, t2, 2
+sub t2, t2, t1
+srai t2, t2, 11
+slli t2, t2, 16
+srai t2, t2, 16
+vsetivli zero, 16, e16, m2, ta, ma
+vmv.v.x v8, t2
+vsetivli zero, 8, e8, mf2, ta, ma
+vse32.v v8, (a0
Re: [FFmpeg-devel] [PATCH 2/4] lavc/rv34dsp: R-V V rv34_inv_transform_dc
Le keskiviikkona 7. helmikuuta 2024, 2.12.22 EET flow gg a écrit : > My carelessness.. fixed it in the reply. I know I said to avoid scalar multiplications, but this may be taking it a little too far. Either this works: slli t1, t0, 9 sh2add t0, t0, t0 sub t0, t1, t0 or just: li t1, 13 * 13 * 3 mul t0, t0, t1 Also the second vsetvl seems pointless, unless you specifically meant that the pointer was aligned to 32 bits? -- Rémi Denis-Courmont http://www.remlab.net/ ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-devel] [PATCH 2/4] lavc/rv34dsp: R-V V rv34_inv_transform_dc
Okay, I have updated them in the response
Rémi Denis-Courmont 于2024年2月10日周六 05:14写道：
> Le keskiviikkona 7. helmikuuta 2024, 2.12.22 EET flow gg a écrit :
> > My carelessness.. fixed it in the reply.
>
> I know I said to avoid scalar multiplications, but this may be taking it a
> little too far. Either this works:
>slli t1, t0, 9
>sh2add t0, t0, t0
>sub t0, t1, t0
> or just:
>li t1, 13 * 13 * 3
>mul t0, t0, t1
>
> Also the second vsetvl seems pointless, unless you specifically meant that
> the
> pointer was aligned to 32 bits?
>
> --
> Rémi Denis-Courmont
> http://www.remlab.net/
>
>
>
> ___
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
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> ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
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From 45ca0ac11eea21e30071551959edef50e3935a37 Mon Sep 17 00:00:00 2001
From: sunyuechi
Date: Wed, 31 Jan 2024 19:03:20 +0800
Subject: [PATCH 2/4] lavc/rv34dsp: R-V V rv34_inv_transform_dc
C908:
rv34_inv_transform_dc_c: 35.5
rv34_inv_transform_dc_rvv_i32: 27.0
---
libavcodec/riscv/Makefile | 2 ++
libavcodec/riscv/rv34dsp_init.c | 39 +
libavcodec/riscv/rv34dsp_rvv.S | 33
libavcodec/rv34dsp.c| 2 ++
libavcodec/rv34dsp.h| 1 +
5 files changed, 77 insertions(+)
create mode 100644 libavcodec/riscv/rv34dsp_init.c
create mode 100644 libavcodec/riscv/rv34dsp_rvv.S
diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile
index e15aba58f4..ffe6631cf2 100644
--- a/libavcodec/riscv/Makefile
+++ b/libavcodec/riscv/Makefile
@@ -44,6 +44,8 @@ RVV-OBJS-$(CONFIG_OPUS_DECODER) += riscv/opusdsp_rvv.o
OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_init.o
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-$(CONFIG_SVQ1_ENCODER) += riscv/svqenc_init.o
RVV-OBJS-$(CONFIG_SVQ1_ENCODER) += riscv/svqenc_rvv.o
OBJS-$(CONFIG_TAK_DECODER) += riscv/takdsp_init.o
diff --git a/libavcodec/riscv/rv34dsp_init.c b/libavcodec/riscv/rv34dsp_init.c
new file mode 100644
index 00..852c8ad9a8
--- /dev/null
+++ b/libavcodec/riscv/rv34dsp_init.c
@@ -0,0 +1,39 @@
+/*
+ * 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_rv34_inv_transform_dc_rvv(int16_t *block);
+
+av_cold void ff_rv34dsp_init_riscv(RV34DSPContext *c)
+{
+#if HAVE_RVV
+int flags = av_get_cpu_flags();
+
+if (flags & AV_CPU_FLAG_RVV_I32 && ff_get_rv_vlenb() >= 16) {
+c->rv34_inv_transform_dc = ff_rv34_inv_transform_dc_rvv;
+}
+#endif
+}
diff --git a/libavcodec/riscv/rv34dsp_rvv.S b/libavcodec/riscv/rv34dsp_rvv.S
new file mode 100644
index 00..21c203c0c4
--- /dev/null
+++ b/libavcodec/riscv/rv34dsp_rvv.S
@@ -0,0 +1,33 @@
+/*
+ * 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"
+
+func ff_rv34_inv_transform_dc_rvv, zve32x
+lht1, 0(a0)
+lit0, 13 * 13 * 3
+mul t2, t0, t1
Re: [FFmpeg-devel] [PATCH 2/4] lavc/rv34dsp: R-V V rv34_inv_transform_dc
Happy new year, The gains are -unsurprisingly- modest here. Did you try to reorder instructions to improve scheduling? -- Rémi Denis-Courmont http://www.remlab.net/ ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-devel] [PATCH 2/4] lavc/rv34dsp: R-V V rv34_inv_transform_dc
Happy new year ~ Yes, I've tried reordering. Rémi Denis-Courmont 于2024年2月10日周六 17:18写道： > Happy new year, > > The gains are -unsurprisingly- modest here. Did you try to reorder > instructions to improve scheduling? > > -- > Rémi Denis-Courmont > http://www.remlab.net/ > > > > ___ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". > ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
