Signed-off-by: Paul B Mahol <one...@gmail.com>
---
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_cas.c | 253 +++++++++++++++++++++++++++++++++++++++
3 files changed, 255 insertions(+)
create mode 100644 libavfilter/vf_cas.c
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index cc00e2c4ac..a8fad9a276 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -177,6 +177,7 @@ OBJS-$(CONFIG_BOXBLUR_FILTER) +=
vf_boxblur.o boxblur.o
OBJS-$(CONFIG_BOXBLUR_OPENCL_FILTER) += vf_avgblur_opencl.o opencl.o \
opencl/avgblur.o boxblur.o
OBJS-$(CONFIG_BWDIF_FILTER) += vf_bwdif.o yadif_common.o
+OBJS-$(CONFIG_CAS_FILTER) += vf_cas.o
OBJS-$(CONFIG_CHROMABER_VULKAN_FILTER) += vf_chromaber_vulkan.o vulkan.o
OBJS-$(CONFIG_CHROMAHOLD_FILTER) += vf_chromakey.o
OBJS-$(CONFIG_CHROMAKEY_FILTER) += vf_chromakey.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 01a7a8bf9f..f094baf496 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -168,6 +168,7 @@ extern AVFilter ff_vf_bm3d;
extern AVFilter ff_vf_boxblur;
extern AVFilter ff_vf_boxblur_opencl;
extern AVFilter ff_vf_bwdif;
+extern AVFilter ff_vf_cas;
extern AVFilter ff_vf_chromahold;
extern AVFilter ff_vf_chromakey;
extern AVFilter ff_vf_chromashift;
diff --git a/libavfilter/vf_cas.c b/libavfilter/vf_cas.c
new file mode 100644
index 0000000000..b7e1879f4b
--- /dev/null
+++ b/libavfilter/vf_cas.c
@@ -0,0 +1,253 @@
+/*
+ * Copyright (c) 2020 Paul B Mahol
+ *
+ * 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/opt.h"
+#include "libavutil/imgutils.h"
+#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
+
+typedef struct CASContext {
+ const AVClass *class;
+
+ float strength;
+ int planes;
+ int nb_planes;
+
+ int depth;
+ int planeheight[4];
+ int planewidth[4];
+
+ AVFrame *in;
+
+ int (*do_slice)(AVFilterContext *s, void *arg,
+ int jobnr, int nb_jobs);
+} CASContext;
+
+static inline float lerpf(float v0, float v1, float f)
+{
+ return v0 + (v1 - v0) * f;
+}
+
+static int cas_slice8(AVFilterContext *avctx, void *arg, int jobnr, int
nb_jobs)
+{
+ CASContext *s = avctx->priv;
+ const float strength = -lerpf(9.f, 4.1f, s->strength);
+ AVFrame *out = arg;
+ AVFrame *in = s->in;
+
+ for (int p = 0; p < s->nb_planes; p++) {
+ const int slice_start = (s->planeheight[p] * jobnr) / nb_jobs;
+ const int slice_end = (s->planeheight[p] * (jobnr+1)) / nb_jobs;
+ const int linesize = out->linesize[p];
+ const int in_linesize = in->linesize[p];
+ const int w = s->planewidth[p];
+ const int w1 = w - 1;;
+ const int h = s->planeheight[p];
+ const int h1 = h - 1;
+ uint8_t *dst = out->data[p] + slice_start * linesize;
+ const uint8_t *src = in->data[p];
+
+ if (!((1 << p) & s->planes)) {
+ av_image_copy_plane(dst, linesize, src + slice_start * linesize,
in_linesize,
+ w, slice_end - slice_start);
+ continue;
+ }
+
+ for (int y = slice_start; y < slice_end; y++) {
+ for (int x = 0; x < w; x++) {
+ int mn, mn2, mx, mx2;
+ int a = src[FFMAX(y - 1, 0) * in_linesize + FFMAX(x - 1, 0)];
+ int b = src[FFMAX(y - 1, 0) * in_linesize + x];
+ int c = src[FFMAX(y - 1, 0) * in_linesize + FFMIN(x + 1, w1)];
+ int d = src[y * in_linesize + FFMAX(x - 1, 0)];
+ int e = src[y * in_linesize + x];
+ int f = src[y * in_linesize + FFMIN(x + 1, w1)];
+ int g = src[FFMIN(y + 1, h1) * in_linesize + FFMAX(x - 1, 0)];
+ int h = src[FFMIN(y + 1, h1) * in_linesize + x];
+ int i = src[FFMIN(y + 1, h1) * in_linesize + FFMIN(x + 1, w1)];
+ float amp, weight;
+
+ mn = FFMIN3(FFMIN3( d, e, f), b, h);
+ mn2 = FFMIN3(FFMIN3(mn, a, c), g, i);
+
+ mn = mn + mn2;
+
+ mx = FFMAX3(FFMAX3( d, e, f), b, h);
+ mx2 = FFMAX3(FFMAX3(mx, a, c), g, i);
+
+ mx = mx + mx2;
+
+ amp = sqrtf(av_clipf(FFMIN(mn, 511 - mx) / (float)mx, 0.f,
1.f));
+
+ weight = amp / strength;
+
+ dst[x] = av_clip_uint8(((b + d + f + h) * weight + e) / (1.f +
4.f * weight));
+ }
+ dst += linesize;
+ }
+ }
+
+ return 0;
+}
+
+static int cas_slice16(AVFilterContext *avctx, void *arg, int jobnr, int
nb_jobs)
+{
+ CASContext *s = avctx->priv;
+ AVFrame *frame = arg;
+
+ for (int p = 0; p < s->nb_planes; p++) {
+ const int slice_start = (s->planeheight[p] * jobnr) / nb_jobs;
+ const int slice_end = (s->planeheight[p] * (jobnr+1)) / nb_jobs;
+ const int linesize = frame->linesize[p];
+ uint8_t *dst = frame->data[p] + slice_start * linesize;
+ for (int y = slice_start; y < slice_end; y++) {
+ for (int x = 0; x < s->planewidth[p]; x++) {
+ }
+ dst += linesize;
+ }
+ }
+
+ return 0;
+}
+
+static int filter_frame(AVFilterLink *inlink, AVFrame *in)
+{
+ AVFilterContext *ctx = inlink->dst;
+ AVFilterLink *outlink = ctx->outputs[0];
+ CASContext *s = ctx->priv;
+ AVFrame *out;
+
+ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!out) {
+ av_frame_free(&in);
+ return AVERROR(ENOMEM);
+ }
+ av_frame_copy_props(out, in);
+
+ s->in = in;
+ ctx->internal->execute(ctx, s->do_slice, out, NULL,
+ FFMIN(in->height, ff_filter_get_nb_threads(ctx)));
+ av_frame_free(&in);
+ s->in = NULL;
+
+ return ff_filter_frame(ctx->outputs[0], out);
+}
+
+static av_cold int query_formats(AVFilterContext *avctx)
+{
+ static const enum AVPixelFormat pixel_fmts[] = {
+ AV_PIX_FMT_GRAY8,
+ AV_PIX_FMT_GRAY9,
+ AV_PIX_FMT_GRAY10,
+ AV_PIX_FMT_GRAY12,
+ AV_PIX_FMT_GRAY14,
+ AV_PIX_FMT_GRAY16,
+ AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
+ AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
+ AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
+ AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
+ AV_PIX_FMT_YUVJ411P,
+ AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
+ AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
+ AV_PIX_FMT_YUV440P10,
+ AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
+ AV_PIX_FMT_YUV440P12,
+ AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
+ AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
+ AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
+ AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
+ AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
+ AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12,
AV_PIX_FMT_YUVA444P16,
+ AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12,
AV_PIX_FMT_YUVA422P16,
+ AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
+ AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12,
AV_PIX_FMT_GBRAP16,
+ AV_PIX_FMT_NONE
+ };
+
+ AVFilterFormats *formats = NULL;
+
+ formats = ff_make_format_list(pixel_fmts);
+ if (!formats)
+ return AVERROR(ENOMEM);
+
+ return ff_set_common_formats(avctx, formats);
+}
+
+static av_cold int config_input(AVFilterLink *inlink)
+{
+ AVFilterContext *avctx = inlink->dst;
+ CASContext *s = avctx->priv;
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
+
+ s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h,
desc->log2_chroma_h);
+ s->planeheight[0] = s->planeheight[3] = inlink->h;
+ s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w,
desc->log2_chroma_w);
+ s->planewidth[0] = s->planewidth[3] = inlink->w;
+
+ s->depth = desc->comp[0].depth;
+ s->nb_planes = desc->nb_components;
+ s->do_slice = s->depth <= 8 ? cas_slice8 : cas_slice16;
+
+ return 0;
+}
+
+static const AVFilterPad cas_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ .config_props = config_input,
+ },
+ { NULL }
+};
+
+static const AVFilterPad cas_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ },
+ { NULL }
+};
+
+#define OFFSET(x) offsetof(CASContext, x)
+#define VF
AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
+
+static const AVOption cas_options[] = {
+ { "strength", "set the sharpening strength", OFFSET(strength),
AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, 2215, VF },
+ { "planes", "set what planes to filter", OFFSET(planes),
AV_OPT_TYPE_FLAGS, {.i64=7}, 0, 15, VF },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(cas);
+
+AVFilter ff_vf_cas = {
+ .name = "cas",
+ .description = NULL_IF_CONFIG_SMALL("Contrast Adaptive Sharpen."),
+ .priv_size = sizeof(CASContext),
+ .priv_class = &cas_class,
+ .query_formats = query_formats,
+ .inputs = cas_inputs,
+ .outputs = cas_outputs,
+ .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC |
AVFILTER_FLAG_SLICE_THREADS,
+ .process_command = ff_filter_process_command,
+};
--
2.17.1
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