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[FFmpeg-devel] avfilter: add sharpen_npp video filter

Message ID BN9PR12MB52748C67771A57F5C9B3FECBD2D99@BN9PR12MB5274.namprd12.prod.outlook.com
State New
Headers show
Series [FFmpeg-devel] avfilter: add sharpen_npp video filter
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Commit Message

Roman Arzumanyan Sept. 13, 2021, 8:57 a.m. UTC
This patch adds simple sharpening filter which is accelerated by NPP. CLI sample:


./ffmpeg \

  -hwaccel cuda -hwaccel_output_format cuda \

  -i ./input.mp4 \

  -vf sharpen_npp \

  -c:v hevc_nvenc \

  -y ./output_sharp.mp4
Subject: [PATCH] sharpen_npp video filter added

---
 configure                    |   5 +-
 libavfilter/Makefile         |   1 +
 libavfilter/allfilters.c     |   1 +
 libavfilter/vf_sharpen_npp.c | 530 +++++++++++++++++++++++++++++++++++
 4 files changed, 535 insertions(+), 2 deletions(-)
 create mode 100644 libavfilter/vf_sharpen_npp.c
diff mbox series

Patch

diff --git a/configure b/configure
index af410a9d11..e092cc8c67 100755
--- a/configure
+++ b/configure
@@ -3094,6 +3094,7 @@  thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
 transpose_npp_filter_deps="ffnvcodec libnpp"
 overlay_cuda_filter_deps="ffnvcodec"
 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
+sharpen_npp_filter_deps="ffnvcodec libnpp"
 
 amf_deps_any="libdl LoadLibrary"
 nvenc_deps="ffnvcodec"
@@ -6443,8 +6444,8 @@  enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug
 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
-enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
-                               check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
+enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei -lnppif ||
+                               check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppif -lnppc -lnppidei ||
                                die "ERROR: libnpp not found"; }
 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index af957a5ac0..330ddfe5d5 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -423,6 +423,7 @@  OBJS-$(CONFIG_SETRANGE_FILTER)               += vf_setparams.o
 OBJS-$(CONFIG_SETSAR_FILTER)                 += vf_aspect.o
 OBJS-$(CONFIG_SETTB_FILTER)                  += settb.o
 OBJS-$(CONFIG_SHARPNESS_VAAPI_FILTER)        += vf_misc_vaapi.o vaapi_vpp.o
+OBJS-$(CONFIG_SHARPEN_NPP_FILTER)            += vf_sharpen_npp.o
 OBJS-$(CONFIG_SHEAR_FILTER)                  += vf_shear.o
 OBJS-$(CONFIG_SHOWINFO_FILTER)               += vf_showinfo.o
 OBJS-$(CONFIG_SHOWPALETTE_FILTER)            += vf_showpalette.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 0c6b2347c8..e50e5f3b6a 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -404,6 +404,7 @@  extern const AVFilter ff_vf_setrange;
 extern const AVFilter ff_vf_setsar;
 extern const AVFilter ff_vf_settb;
 extern const AVFilter ff_vf_sharpness_vaapi;
+extern const AVFilter ff_vf_sharpen_npp;
 extern const AVFilter ff_vf_shear;
 extern const AVFilter ff_vf_showinfo;
 extern const AVFilter ff_vf_showpalette;
diff --git a/libavfilter/vf_sharpen_npp.c b/libavfilter/vf_sharpen_npp.c
new file mode 100644
index 0000000000..85549c36d0
--- /dev/null
+++ b/libavfilter/vf_sharpen_npp.c
@@ -0,0 +1,530 @@ 
+/*
+ * 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
+ */
+
+/**
+ * @file
+ * NPP sharpen video filter
+ */
+
+#include <nppi.h>
+#include <nppi_filtering_functions.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "libavutil/avstring.h"
+#include "libavutil/common.h"
+#include "libavutil/hwcontext.h"
+#include "libavutil/hwcontext_cuda_internal.h"
+#include "libavutil/cuda_check.h"
+#include "libavutil/internal.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+
+#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "scale_eval.h"
+#include "video.h"
+
+#define CHECK_CU(x) FF_CUDA_CHECK_DL(ctx, device_hwctx->internal->cuda_dl, x)
+
+static const enum AVPixelFormat supported_formats[] = {
+    AV_PIX_FMT_YUV420P,
+    AV_PIX_FMT_NV12,
+    AV_PIX_FMT_YUV444P,
+};
+
+static const enum AVPixelFormat deinterleaved_formats[][2] = {
+    { AV_PIX_FMT_NV12, AV_PIX_FMT_YUV420P },
+};
+
+enum SharpenStage {
+    STAGE_DEINTERLEAVE,
+    STAGE_SHARPEN,
+    STAGE_INTERLEAVE,
+    STAGE_NB,
+};
+
+typedef struct NPPSharpenStageContext {
+    int stage_needed;
+    enum AVPixelFormat in_fmt;
+    enum AVPixelFormat out_fmt;
+
+    struct {
+        int width;
+        int height;
+    } planes_in[3], planes_out[3];
+
+    AVBufferRef *frames_ctx;
+    AVFrame     *frame;
+} NPPSharpenStageContext;
+
+typedef struct NPPSharpenContext {
+    const AVClass *class;
+
+    NPPSharpenStageContext stages[STAGE_NB];
+    AVFrame *tmp_frame;
+
+    /**
+     * Output sw format. AV_PIX_FMT_NONE for no conversion.
+     */
+    enum AVPixelFormat format;
+
+    /**
+     * Width, height and pixel format strings;
+     */
+    char *w_expr;
+    char *h_expr;
+    char *format_str;    
+
+} NPPSharpenContext;
+
+static int nppsharpen_init(AVFilterContext *ctx)
+{
+    NPPSharpenContext *s = ctx->priv;
+    int i;
+
+    if (!strcmp(s->format_str, "same")) {
+        s->format = AV_PIX_FMT_NONE;
+    } else {
+        s->format = av_get_pix_fmt(s->format_str);
+        if (s->format == AV_PIX_FMT_NONE) {
+            av_log(ctx, AV_LOG_ERROR, "Unrecognized pixel format: %s\n", s->format_str);
+            return AVERROR(EINVAL);
+        }
+    }
+
+    for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
+        s->stages[i].frame = av_frame_alloc();
+        if (!s->stages[i].frame)
+            return AVERROR(ENOMEM);
+    }
+    s->tmp_frame = av_frame_alloc();
+    if (!s->tmp_frame)
+        return AVERROR(ENOMEM);
+
+    return 0;
+}
+
+static void nppsharpen_uninit(AVFilterContext *ctx)
+{
+    NPPSharpenContext              *s = ctx->priv;
+    int i;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
+        av_frame_free(&s->stages[i].frame);
+        av_buffer_unref(&s->stages[i].frames_ctx);
+    }
+    av_frame_free(&s->tmp_frame);
+}
+
+static int nppsharpen_query_formats(AVFilterContext *ctx)
+{
+    static const enum AVPixelFormat pixel_formats[] = {
+        AV_PIX_FMT_CUDA, AV_PIX_FMT_NONE,
+    };
+    AVFilterFormats *pix_fmts = ff_make_format_list(pixel_formats);
+
+    return ff_set_common_formats(ctx, pix_fmts);
+}
+
+static int init_stage(NPPSharpenStageContext *stage, AVBufferRef *device_ctx)
+{
+    AVBufferRef *out_ref = NULL;
+    AVHWFramesContext *out_ctx;
+    int in_sw, in_sh, out_sw, out_sh;
+    int ret, i;
+
+    av_pix_fmt_get_chroma_sub_sample(stage->in_fmt,  &in_sw,  &in_sh);
+    av_pix_fmt_get_chroma_sub_sample(stage->out_fmt, &out_sw, &out_sh);
+    if (!stage->planes_out[0].width) {
+        stage->planes_out[0].width  = stage->planes_in[0].width;
+        stage->planes_out[0].height = stage->planes_in[0].height;
+    }
+
+    for (i = 1; i < FF_ARRAY_ELEMS(stage->planes_in); i++) {
+        stage->planes_in[i].width   = stage->planes_in[0].width   >> in_sw;
+        stage->planes_in[i].height  = stage->planes_in[0].height  >> in_sh;
+        stage->planes_out[i].width  = stage->planes_out[0].width  >> out_sw;
+        stage->planes_out[i].height = stage->planes_out[0].height >> out_sh;
+    }
+
+    out_ref = av_hwframe_ctx_alloc(device_ctx);
+    if (!out_ref)
+        return AVERROR(ENOMEM);
+    out_ctx = (AVHWFramesContext*)out_ref->data;
+
+    out_ctx->format    = AV_PIX_FMT_CUDA;
+    out_ctx->sw_format = stage->out_fmt;
+    out_ctx->width     = FFALIGN(stage->planes_out[0].width,  32);
+    out_ctx->height    = FFALIGN(stage->planes_out[0].height, 32);
+
+    ret = av_hwframe_ctx_init(out_ref);
+    if (ret < 0)
+        goto fail;
+
+    av_frame_unref(stage->frame);
+    ret = av_hwframe_get_buffer(out_ref, stage->frame, 0);
+    if (ret < 0)
+        goto fail;
+
+    stage->frame->width  = stage->planes_out[0].width;
+    stage->frame->height = stage->planes_out[0].height;
+
+    av_buffer_unref(&stage->frames_ctx);
+    stage->frames_ctx = out_ref;
+
+    return 0;
+fail:
+    av_buffer_unref(&out_ref);
+    return ret;
+}
+
+static int format_is_supported(enum AVPixelFormat fmt)
+{
+    int i;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
+        if (supported_formats[i] == fmt)
+            return 1;
+    return 0;
+}
+
+static enum AVPixelFormat get_deinterleaved_format(enum AVPixelFormat fmt)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
+    int i, planes;
+
+    planes = av_pix_fmt_count_planes(fmt);
+    if (planes == desc->nb_components)
+        return fmt;
+    for (i = 0; i < FF_ARRAY_ELEMS(deinterleaved_formats); i++)
+        if (deinterleaved_formats[i][0] == fmt)
+            return deinterleaved_formats[i][1];
+    return AV_PIX_FMT_NONE;
+}
+
+static int init_processing_chain(AVFilterContext *ctx, int width, int height)
+{
+    NPPSharpenContext *s = ctx->priv;
+    AVHWFramesContext *in_frames_ctx;
+
+    enum AVPixelFormat in_format;
+    enum AVPixelFormat out_format;
+    enum AVPixelFormat in_deinterleaved_format;
+    enum AVPixelFormat out_deinterleaved_format;
+
+    int i, ret, last_stage = -1;
+
+    /* check that we have a hw context */
+    if (!ctx->inputs[0]->hw_frames_ctx) {
+        av_log(ctx, AV_LOG_ERROR, "No hw context provided on input\n");
+        return AVERROR(EINVAL);
+    }
+    in_frames_ctx = (AVHWFramesContext*)ctx->inputs[0]->hw_frames_ctx->data;
+    in_format     = in_frames_ctx->sw_format;
+    out_format    = (s->format == AV_PIX_FMT_NONE) ? in_format : s->format;
+
+    if (!format_is_supported(in_format)) {
+        av_log(ctx, AV_LOG_ERROR, "Unsupported input format: %s\n",
+               av_get_pix_fmt_name(in_format));
+        return AVERROR(ENOSYS);
+    }
+    if (!format_is_supported(out_format)) {
+        av_log(ctx, AV_LOG_ERROR, "Unsupported output format: %s\n",
+               av_get_pix_fmt_name(out_format));
+        return AVERROR(ENOSYS);
+    }
+
+    in_deinterleaved_format  = get_deinterleaved_format(in_format);
+    out_deinterleaved_format = get_deinterleaved_format(out_format);
+    if (in_deinterleaved_format  == AV_PIX_FMT_NONE ||
+        out_deinterleaved_format == AV_PIX_FMT_NONE)
+        return AVERROR_BUG;
+
+    /* figure out which stages need to be done */
+    s->stages[STAGE_SHARPEN].stage_needed = 1;
+    if (in_format != in_deinterleaved_format)
+        s->stages[STAGE_DEINTERLEAVE].stage_needed = 1;
+    if (out_format != out_deinterleaved_format)
+        s->stages[STAGE_INTERLEAVE].stage_needed = 1;
+
+    s->stages[STAGE_DEINTERLEAVE].in_fmt              = in_format;
+    s->stages[STAGE_DEINTERLEAVE].out_fmt             = in_deinterleaved_format;
+    s->stages[STAGE_DEINTERLEAVE].planes_in[0].width  = width;
+    s->stages[STAGE_DEINTERLEAVE].planes_in[0].height = height;
+
+    s->stages[STAGE_SHARPEN].in_fmt               = in_deinterleaved_format;
+    s->stages[STAGE_SHARPEN].out_fmt              = out_deinterleaved_format;
+    s->stages[STAGE_SHARPEN].planes_in[0].width   = width;
+    s->stages[STAGE_SHARPEN].planes_in[0].height  = height;
+    s->stages[STAGE_SHARPEN].planes_out[0].width  = width;
+    s->stages[STAGE_SHARPEN].planes_out[0].height = height;
+
+    s->stages[STAGE_INTERLEAVE].in_fmt              = out_deinterleaved_format;
+    s->stages[STAGE_INTERLEAVE].out_fmt             = out_format;
+    s->stages[STAGE_INTERLEAVE].planes_in[0].width  = width;
+    s->stages[STAGE_INTERLEAVE].planes_in[0].height = height;
+
+    /* init the hardware contexts */
+    for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
+        if (!s->stages[i].stage_needed)
+            continue;
+
+        ret = init_stage(&s->stages[i], in_frames_ctx->device_ref);
+        if (ret < 0)
+            return ret;
+
+        last_stage = i;
+    }
+
+    if (last_stage >= 0)
+        ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(s->stages[last_stage].frames_ctx);
+    else
+        ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(ctx->inputs[0]->hw_frames_ctx);
+
+    if (!ctx->outputs[0]->hw_frames_ctx)
+        return AVERROR(ENOMEM);
+
+    return 0;
+}
+
+static int nppsharpen_config_props(AVFilterLink *outlink)
+{
+    AVFilterContext *ctx = outlink->src;
+    AVFilterLink *inlink = outlink->src->inputs[0];
+    int ret;
+
+    outlink->w = inlink->w;
+    outlink->h = inlink->h;
+
+    ret = init_processing_chain(ctx, inlink->w, inlink->h);
+    if (ret < 0)
+        return ret;
+
+    if (inlink->sample_aspect_ratio.num)
+        outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h*inlink->w,
+                                                             outlink->w*inlink->h},
+                                                inlink->sample_aspect_ratio);
+    else
+        outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
+
+    return ret;
+}
+
+static int nppsharpen_deinterleave(AVFilterContext *ctx, NPPSharpenStageContext *stage,
+                                 AVFrame *out, AVFrame *in)
+{
+    AVHWFramesContext *in_frames_ctx = (AVHWFramesContext*)in->hw_frames_ctx->data;
+    NppStatus err;
+
+    switch (in_frames_ctx->sw_format) {
+    case AV_PIX_FMT_NV12:
+        err = nppiYCbCr420_8u_P2P3R(in->data[0], in->linesize[0],
+                                    in->data[1], in->linesize[1],
+                                    out->data, out->linesize,
+                                    (NppiSize){ in->width, in->height });
+        break;
+    default:
+        return AVERROR_BUG;
+    }
+    if (err != NPP_SUCCESS) {
+        av_log(ctx, AV_LOG_ERROR, "NPP deinterleave error: %d\n", err);
+        return AVERROR_UNKNOWN;
+    }
+
+    return 0;
+}
+
+static int nppsharpen_apply_filter(AVFilterContext *ctx, NPPSharpenStageContext *stage,
+                           AVFrame *out, AVFrame *in)
+{
+    NppStatus err;
+    int i;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(stage->planes_in) && i < FF_ARRAY_ELEMS(in->data) && in->data[i]; i++) {
+        int ow = stage->planes_out[i].width;
+        int oh = stage->planes_out[i].height;
+
+        err = nppiFilterSharpenBorder_8u_C1R(in->data[i], in->linesize[i], 
+                                             (NppiSize){ow, oh}, (NppiPoint){0, 0},
+                                             out->data[i], out->linesize[i], 
+                                             (NppiSize){ow, oh},
+                                             NPP_BORDER_REPLICATE);
+        if (err != NPP_SUCCESS) {
+            av_log(ctx, AV_LOG_ERROR, "NPP sharpen error: %d\n", err);
+            return AVERROR_UNKNOWN;
+        }
+    }
+
+    return 0;
+}
+
+static int nppsharpen_interleave(AVFilterContext *ctx, NPPSharpenStageContext *stage,
+                               AVFrame *out, AVFrame *in)
+{
+    AVHWFramesContext *out_frames_ctx = (AVHWFramesContext*)out->hw_frames_ctx->data;
+    NppStatus err;
+
+    switch (out_frames_ctx->sw_format) {
+    case AV_PIX_FMT_NV12:
+        err = nppiYCbCr420_8u_P3P2R((const uint8_t**)in->data,
+                                    in->linesize,
+                                    out->data[0], out->linesize[0],
+                                    out->data[1], out->linesize[1],
+                                    (NppiSize){ in->width, in->height });
+        break;
+    default:
+        return AVERROR_BUG;
+    }
+    if (err != NPP_SUCCESS) {
+        av_log(ctx, AV_LOG_ERROR, "NPP deinterleave error: %d\n", err);
+        return AVERROR_UNKNOWN;
+    }
+
+    return 0;
+}
+
+static int (*const nppsharpen_process[])(AVFilterContext *ctx, NPPSharpenStageContext *stage,
+                                       AVFrame *out, AVFrame *in) = {
+    [STAGE_DEINTERLEAVE] = nppsharpen_deinterleave,
+    [STAGE_SHARPEN]      = nppsharpen_apply_filter,
+    [STAGE_INTERLEAVE]   = nppsharpen_interleave,
+};
+
+static int nppsharpen_sharpen(AVFilterContext *ctx, AVFrame *out, AVFrame *in)
+{
+    NPPSharpenContext *s = ctx->priv;
+    AVFrame *src = in;
+    int i, ret, last_stage = -1;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
+        if (!s->stages[i].stage_needed)
+            continue;
+
+        ret = nppsharpen_process[i](ctx, &s->stages[i], s->stages[i].frame, src);
+        if (ret < 0)
+            return ret;
+
+        src        = s->stages[i].frame;
+        last_stage = i;
+    }
+
+    if (last_stage < 0)
+        return AVERROR_BUG;
+    ret = av_hwframe_get_buffer(src->hw_frames_ctx, s->tmp_frame, 0);
+    if (ret < 0)
+        return ret;
+
+    av_frame_move_ref(out, src);
+    av_frame_move_ref(src, s->tmp_frame);
+
+    ret = av_frame_copy_props(out, in);
+    if (ret < 0)
+        return ret;
+
+    return 0;
+}
+
+static int nppsharpen_filter_frame(AVFilterLink *link, AVFrame *in)
+{
+    AVFilterContext              *ctx = link->dst;
+    AVFilterLink             *outlink = ctx->outputs[0];
+    AVHWFramesContext     *frames_ctx = (AVHWFramesContext*)outlink->hw_frames_ctx->data;
+    AVCUDADeviceContext *device_hwctx = frames_ctx->device_ctx->hwctx;
+
+    AVFrame *out = NULL;
+    CUcontext dummy;
+    int ret = 0;
+
+    out = av_frame_alloc();
+    if (!out) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    ret = CHECK_CU(device_hwctx->internal->cuda_dl->cuCtxPushCurrent(device_hwctx->cuda_ctx));
+    if (ret < 0)
+        goto fail;
+
+    ret = nppsharpen_sharpen(ctx, out, in);
+
+    CHECK_CU(device_hwctx->internal->cuda_dl->cuCtxPopCurrent(&dummy));
+    if (ret < 0)
+        goto fail;
+
+    av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den,
+              (int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,
+              (int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,
+              INT_MAX);
+
+    av_frame_free(&in);
+    return ff_filter_frame(outlink, out);
+fail:
+    av_frame_free(&in);
+    av_frame_free(&out);
+    return ret;
+}
+
+#define OFFSET(x) offsetof(NPPSharpenContext, x)
+#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)
+static const AVOption options[] = {
+    { "format",     "Output pixel format.", OFFSET(format_str), AV_OPT_TYPE_STRING, { .str = "same" }, .flags = FLAGS },
+    { NULL },
+};
+
+static const AVClass nppsharpen_class = {
+    .class_name = "nppsharpen",
+    .item_name  = av_default_item_name,
+    .option     = options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+static const AVFilterPad nppsharpen_inputs[] = {
+    {
+        .name        = "default",
+        .type        = AVMEDIA_TYPE_VIDEO,
+        .filter_frame = nppsharpen_filter_frame,
+    }
+};
+
+static const AVFilterPad nppsharpen_outputs[] = {
+    {
+        .name         = "default",
+        .type         = AVMEDIA_TYPE_VIDEO,
+        .config_props = nppsharpen_config_props,
+    }
+};
+
+const AVFilter ff_vf_sharpen_npp = {
+    .name      = "sharpen_npp",
+    .description = NULL_IF_CONFIG_SMALL("NVIDIA Performance Primitives video "
+                                        "sharpening filter."),
+
+    .init          = nppsharpen_init,
+    .uninit        = nppsharpen_uninit,
+    .query_formats = nppsharpen_query_formats,
+
+    .priv_size = sizeof(NPPSharpenContext),
+    .priv_class = &nppsharpen_class,
+
+    FILTER_INPUTS(nppsharpen_inputs),
+    FILTER_OUTPUTS(nppsharpen_outputs),
+
+    .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+};