@@ -4310,6 +4310,24 @@ build.
Below is a description of the currently available video filters.
+@section ablur
+
+Apply average blur filter.
+
+The filter accepts the following options:
+
+@table @option
+@item sizeX
+Set horizontal kernel size.
+
+@item planes
+Set which planes to filter. By default all planes are filtered.
+
+@item sizeY
+Set vertical kernel size, if zero it will be same as @code{sizeX}.
+Default is @code{0}.
+@end table
+
@section alphaextract
Extract the alpha component from the input as a grayscale video. This
@@ -120,6 +120,7 @@ OBJS-$(CONFIG_SINE_FILTER) += asrc_sine.o
OBJS-$(CONFIG_ANULLSINK_FILTER) += asink_anullsink.o
# video filters
+OBJS-$(CONFIG_ABLUR_FILTER) += vf_ablur.o
OBJS-$(CONFIG_ALPHAEXTRACT_FILTER) += vf_extractplanes.o
OBJS-$(CONFIG_ALPHAMERGE_FILTER) += vf_alphamerge.o
OBJS-$(CONFIG_ASS_FILTER) += vf_subtitles.o
@@ -137,6 +137,7 @@ void avfilter_register_all(void)
REGISTER_FILTER(ANULLSINK, anullsink, asink);
+ REGISTER_FILTER(ABLUR, ablur, vf);
REGISTER_FILTER(ALPHAEXTRACT, alphaextract, vf);
REGISTER_FILTER(ALPHAMERGE, alphamerge, vf);
REGISTER_FILTER(ASS, ass, vf);
new file mode 100644
@@ -0,0 +1,341 @@
+/*
+ * Copyright (c) 2016 Paul B Mahol
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "libavutil/imgutils.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
+
+typedef struct ABlurContext {
+ const AVClass *class;
+
+ int radius;
+ int radiusV;
+ int planes;
+
+ int depth;
+ int planewidth[4];
+ int planeheight[4];
+ float *buffer;
+ int nb_planes;
+} ABlurContext;
+
+#define OFFSET(x) offsetof(ABlurContext, x)
+#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+
+static const AVOption ablur_options[] = {
+ { "sizeX", "set horizontal size", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=1}, 1, 1024, FLAGS },
+ { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
+ { "sizeY", "set vertical size", OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0}, 0, 1024, FLAGS },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(ablur);
+
+typedef struct ThreadData {
+ int height;
+ int width;
+} ThreadData;
+
+static int filter_horizontally(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
+{
+ ABlurContext *s = ctx->priv;
+ ThreadData *td = arg;
+ const int height = td->height;
+ const int width = td->width;
+ const int slice_start = (height * jobnr ) / nb_jobs;
+ const int slice_end = (height * (jobnr+1)) / nb_jobs;
+ const int radius = FFMIN(s->radius, width / 2);
+ float *buffer = s->buffer;
+ int y, x;
+ float *ptr;
+
+ /* Filter horizontally along each row */
+ for (y = slice_start; y < slice_end; y++) {
+ float acc = 0;
+ int count = 0;
+
+ ptr = buffer + width * y;
+
+ for (x = 0; x < radius; x++) {
+ acc += ptr[x];
+ }
+ count += radius;
+
+ for (x = 0; x <= radius; x++) {
+ acc += ptr[x + radius];
+ count++;
+ ptr[x] = acc / count;
+ }
+
+ for (; x < width - radius; x++) {
+ acc += ptr[x + radius] - ptr[x - radius];
+ ptr[x] = acc / count;
+ }
+
+ for (; x < width; x++) {
+ acc -= ptr[x - radius];
+ count--;
+ ptr[x] = acc / count;
+ }
+ }
+
+ return 0;
+}
+
+static int filter_vertically(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
+{
+ ABlurContext *s = ctx->priv;
+ ThreadData *td = arg;
+ const int height = td->height;
+ const int width = td->width;
+ const int slice_start = (width * jobnr ) / nb_jobs;
+ const int slice_end = (width * (jobnr+1)) / nb_jobs;
+ const int radius = FFMIN(s->radiusV, height / 2);
+ float *buffer = s->buffer;
+ int i, x;
+ float *ptr;
+
+ /* Filter vertically along each column */
+ for (x = slice_start; x < slice_end; x++) {
+ float acc = 0;
+ int count = 0;
+
+ ptr = buffer + x;
+
+ for (i = 0; i < radius; i++) {
+ acc += ptr[0];
+ ptr += width;
+ }
+ count += radius;
+
+ ptr = buffer + x;
+ for (i = 0; i <= radius; i++) {
+ acc += ptr[(i + radius) * width];
+ count++;
+ ptr[i * width] = acc / count;
+ }
+
+ for (; i < height - radius; i++) {
+ acc += ptr[(i + radius) * width] - ptr[(i - radius) * width];
+ ptr[i * width] = acc / count;
+ }
+
+ for (; i < height; i++) {
+ acc -= ptr[(i - radius) * width];
+ count--;
+ ptr[i * width] = acc / count;
+ }
+ }
+
+ return 0;
+}
+
+static void averageiir2d(AVFilterContext *ctx, int plane)
+{
+ ABlurContext *s = ctx->priv;
+ const int width = s->planewidth[plane];
+ const int height = s->planeheight[plane];
+ const int nb_threads = ff_filter_get_nb_threads(ctx);
+ ThreadData td;
+
+ td.width = width;
+ td.height = height;
+ ctx->internal->execute(ctx, filter_horizontally, &td, NULL, FFMIN(height, nb_threads));
+ ctx->internal->execute(ctx, filter_vertically, &td, NULL, FFMIN(width, nb_threads));
+}
+
+static int query_formats(AVFilterContext *ctx)
+{
+ static const enum AVPixelFormat pix_fmts[] = {
+ AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
+ AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
+ AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
+ AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
+ AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
+ 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_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
+ AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
+ AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
+ AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
+ AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
+ AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
+ 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_GBRAP, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
+ AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
+ AV_PIX_FMT_NONE
+ };
+
+ return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
+}
+
+static int config_input(AVFilterLink *inlink)
+{
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
+ ABlurContext *s = inlink->dst->priv;
+
+ s->depth = desc->comp[0].depth;
+ s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
+ s->planewidth[0] = s->planewidth[3] = inlink->w;
+ s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
+ s->planeheight[0] = s->planeheight[3] = inlink->h;
+
+ s->nb_planes = av_pix_fmt_count_planes(inlink->format);
+
+ s->buffer = av_malloc_array(inlink->w, inlink->h * sizeof(*s->buffer));
+ if (!s->buffer)
+ return AVERROR(ENOMEM);
+
+ if (s->radiusV <= 0) {
+ s->radiusV = s->radius;
+ }
+
+ return 0;
+}
+
+static int filter_frame(AVFilterLink *inlink, AVFrame *in)
+{
+ AVFilterContext *ctx = inlink->dst;
+ ABlurContext *s = ctx->priv;
+ AVFilterLink *outlink = ctx->outputs[0];
+ AVFrame *out;
+ int plane;
+
+ if (av_frame_is_writable(in)) {
+ out = in;
+ } else {
+ 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);
+ }
+
+ for (plane = 0; plane < s->nb_planes; plane++) {
+ const int height = s->planeheight[plane];
+ const int width = s->planewidth[plane];
+ float *bptr = s->buffer;
+ const uint8_t *src = in->data[plane];
+ const uint16_t *src16 = (const uint16_t *)in->data[plane];
+ uint8_t *dst = out->data[plane];
+ uint16_t *dst16 = (uint16_t *)out->data[plane];
+ int y, x;
+
+ if (!(s->planes & (1 << plane))) {
+ if (out != in)
+ av_image_copy_plane(out->data[plane], out->linesize[plane],
+ in->data[plane], in->linesize[plane],
+ width * ((s->depth + 7) / 8), height);
+ continue;
+ }
+
+ if (s->depth == 8) {
+ for (y = 0; y < height; y++) {
+ for (x = 0; x < width; x++) {
+ bptr[x] = src[x];
+ }
+ bptr += width;
+ src += in->linesize[plane];
+ }
+ } else {
+ for (y = 0; y < height; y++) {
+ for (x = 0; x < width; x++) {
+ bptr[x] = src16[x];
+ }
+ bptr += width;
+ src16 += in->linesize[plane] / 2;
+ }
+ }
+
+ averageiir2d(ctx, plane);
+
+ bptr = s->buffer;
+ if (s->depth == 8) {
+ for (y = 0; y < height; y++) {
+ for (x = 0; x < width; x++) {
+ dst[x] = bptr[x];
+ }
+ bptr += width;
+ dst += out->linesize[plane];
+ }
+ } else {
+ for (y = 0; y < height; y++) {
+ for (x = 0; x < width; x++) {
+ dst16[x] = bptr[x];
+ }
+ bptr += width;
+ dst16 += out->linesize[plane] / 2;
+ }
+ }
+ }
+
+ if (out != in)
+ av_frame_free(&in);
+ return ff_filter_frame(outlink, out);
+}
+
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ ABlurContext *s = ctx->priv;
+
+ av_freep(&s->buffer);
+}
+
+static const AVFilterPad ablur_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_input,
+ .filter_frame = filter_frame,
+ },
+ { NULL }
+};
+
+static const AVFilterPad ablur_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_ablur = {
+ .name = "ablur",
+ .description = NULL_IF_CONFIG_SMALL("Apply Average Blur filter."),
+ .priv_size = sizeof(ABlurContext),
+ .priv_class = &ablur_class,
+ .uninit = uninit,
+ .query_formats = query_formats,
+ .inputs = ablur_inputs,
+ .outputs = ablur_outputs,
+ .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
+};
Signed-off-by: Paul B Mahol <onemda@gmail.com> --- doc/filters.texi | 18 +++ libavfilter/Makefile | 1 + libavfilter/allfilters.c | 1 + libavfilter/vf_ablur.c | 341 +++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 361 insertions(+) create mode 100644 libavfilter/vf_ablur.c