[FFmpeg-devel] [PATCH] avfilter: add maskedmerge filter
Paul B Mahol
onemda at gmail.com
Sat Sep 26 10:29:15 CEST 2015
Signed-off-by: Paul B Mahol <onemda at gmail.com>
---
doc/filters.texi | 15 ++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_maskedmerge.c | 324 +++++++++++++++++++++++++++++++++++++++++++
4 files changed, 341 insertions(+)
create mode 100644 libavfilter/vf_maskedmerge.c
diff --git a/doc/filters.texi b/doc/filters.texi
index 044876c..e4a80cd 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -7624,6 +7624,21 @@ lutyuv=y='bitand(val, 128+64+32)'
@end example
@end itemize
+ at section maskedmerge
+
+Merge first input stream with second input stream using per pixel weights in
+the third input stream. 0 means that pixel component from first stream is
+returned unchanged while 255 for 8-bit videos means that pixel component from
+second stream is returned unchanged.
+
+This filter accepts the following options:
+ at table @option
+ at item planes
+Set which planes will be processed as bitmap, unprocessed planes will be
+copied from first stream.
+By default all planes will be processed.
+ at end table
+
@section mergeplanes
Merge color channel components from several video streams.
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index c70887e..9125443 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -169,6 +169,7 @@ OBJS-$(CONFIG_LUT3D_FILTER) += vf_lut3d.o
OBJS-$(CONFIG_LUT_FILTER) += vf_lut.o
OBJS-$(CONFIG_LUTRGB_FILTER) += vf_lut.o
OBJS-$(CONFIG_LUTYUV_FILTER) += vf_lut.o
+OBJS-$(CONFIG_MASKEDMERGE_FILTER) += vf_maskedmerge.o framesync.o
OBJS-$(CONFIG_MCDEINT_FILTER) += vf_mcdeint.o
OBJS-$(CONFIG_MERGEPLANES_FILTER) += vf_mergeplanes.o framesync.o
OBJS-$(CONFIG_MPDECIMATE_FILTER) += vf_mpdecimate.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index c21456d..612fc99 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -191,6 +191,7 @@ void avfilter_register_all(void)
REGISTER_FILTER(LUT, lut, vf);
REGISTER_FILTER(LUTRGB, lutrgb, vf);
REGISTER_FILTER(LUTYUV, lutyuv, vf);
+ REGISTER_FILTER(MASKEDMERGE, maskedmerge, vf);
REGISTER_FILTER(MCDEINT, mcdeint, vf);
REGISTER_FILTER(MERGEPLANES, mergeplanes, vf);
REGISTER_FILTER(MPDECIMATE, mpdecimate, vf);
diff --git a/libavfilter/vf_maskedmerge.c b/libavfilter/vf_maskedmerge.c
new file mode 100644
index 0000000..72f9fb3
--- /dev/null
+++ b/libavfilter/vf_maskedmerge.c
@@ -0,0 +1,324 @@
+/*
+ * Copyright (c) 2015 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/imgutils.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/opt.h"
+#include "avfilter.h"
+#include "formats.h"
+#include "framesync.h"
+#include "internal.h"
+#include "video.h"
+
+typedef struct MaskedMergeContext {
+ const AVClass *class;
+ int width[4], height[4];
+ int nb_planes;
+ int planes;
+ int max, half, depth;
+ FFFrameSync fs;
+
+ void (*maskedmerge)(struct MaskedMergeContext *s, const AVFrame *base,
+ const AVFrame *overlay, const AVFrame *mask, AVFrame *out);
+} MaskedMergeContext;
+
+#define OFFSET(x) offsetof(MaskedMergeContext, x)
+#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
+
+static const AVOption maskedmerge_options[] = {
+ { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(maskedmerge);
+
+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_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_GBRAP16,
+ AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
+ AV_PIX_FMT_NONE
+ };
+
+ ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
+ return 0;
+}
+
+static int process_frame(FFFrameSync *fs)
+{
+ AVFilterContext *ctx = fs->parent;
+ MaskedMergeContext *s = fs->opaque;
+ AVFilterLink *outlink = ctx->outputs[0];
+ AVFrame *out, *base, *overlay, *mask;
+ int ret;
+
+ if ((ret = ff_framesync_get_frame(&s->fs, 0, &base, 0)) < 0 ||
+ (ret = ff_framesync_get_frame(&s->fs, 1, &overlay, 0)) < 0 ||
+ (ret = ff_framesync_get_frame(&s->fs, 2, &mask, 0)) < 0)
+ return ret;
+
+ if (ctx->is_disabled) {
+ out = av_frame_clone(base);
+ if (!out)
+ return AVERROR(ENOMEM);
+ } else {
+ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!out)
+ return AVERROR(ENOMEM);
+ av_frame_copy_props(out, base);
+
+ s->maskedmerge(s, base, overlay, mask, out);
+ }
+ out->pts = av_rescale_q(base->pts, s->fs.time_base, outlink->time_base);
+
+ return ff_filter_frame(outlink, out);
+}
+
+static void maskedmerge8(MaskedMergeContext *s, const AVFrame *base,
+ const AVFrame *overlay, const AVFrame *mask, AVFrame *out)
+{
+ int p, x, y;
+
+ for (p = 0; p < s->nb_planes; p++) {
+ const uint8_t *bsrc = base->data[p];
+ const uint8_t *osrc = overlay->data[p];
+ const uint8_t *msrc = mask->data[p];
+ uint8_t *dst = out->data[p];
+
+ if (!((1 << p) & s->planes)) {
+ av_image_copy_plane(dst, out->linesize[p], bsrc, base->linesize[p],
+ s->width[p], s->height[p]);
+ continue;
+ }
+
+ for (y = 0; y < s->height[p]; y++) {
+ for (x = 0; x < s->width[p]; x++) {
+ dst[x] = ((256 - msrc[x]) * bsrc[x] + msrc[x] * osrc[x] + 128) >> 8;
+ }
+
+ dst += out->linesize[p];
+ bsrc += base->linesize[p];
+ osrc += overlay->linesize[p];
+ msrc += mask->linesize[p];
+ }
+ }
+}
+
+static void maskedmerge16(MaskedMergeContext *s, const AVFrame *base,
+ const AVFrame *overlay, const AVFrame *mask, AVFrame *out)
+{
+ const int max = s->max;
+ const int half = s->half;
+ const int shift = s->depth;
+ int p, x, y;
+
+ for (p = 0; p < s->nb_planes; p++) {
+ const uint16_t *bsrc = (const uint16_t *)base->data[p];
+ const uint16_t *osrc = (const uint16_t *)overlay->data[p];
+ const uint16_t *msrc = (const uint16_t *)mask->data[p];
+ uint16_t *dst = (uint16_t *)out->data[p];
+
+ if (!((1 << p) & s->planes)) {
+ av_image_copy_plane(out->data[p], out->linesize[p], base->data[p], base->linesize[p],
+ s->width[p], s->height[p]);
+ continue;
+ }
+
+ for (y = 0; y < s->height[p]; y++) {
+ for (x = 0; x < s->width[p]; x++) {
+ dst[x] = ((max - msrc[x]) * bsrc[x] + msrc[x] * osrc[x] + half) >> shift;
+ }
+
+ dst += out->linesize[p] / 2;
+ bsrc += base->linesize[p] / 2;
+ osrc += overlay->linesize[p] / 2;
+ msrc += mask->linesize[p] / 2;
+ }
+ }
+}
+
+static int config_input(AVFilterLink *inlink)
+{
+ AVFilterContext *ctx = inlink->dst;
+ MaskedMergeContext *s = ctx->priv;
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
+ int vsub, hsub;
+
+ s->nb_planes = av_pix_fmt_count_planes(inlink->format);
+
+ hsub = desc->log2_chroma_w;
+ vsub = desc->log2_chroma_h;
+ s->height[1] = s->height[2] = FF_CEIL_RSHIFT(inlink->h, vsub);
+ s->height[0] = s->height[3] = inlink->h;
+ s->width[1] = s->width[2] = FF_CEIL_RSHIFT(inlink->w, hsub);
+ s->width[0] = s->width[3] = inlink->w;
+
+ s->depth = desc->comp[0].depth;
+ s->max = 1 << s->depth;
+ s->half = s->max / 2;
+
+ if (desc->comp[0].depth == 8)
+ s->maskedmerge = maskedmerge8;
+ else
+ s->maskedmerge = maskedmerge16;
+
+ return 0;
+}
+
+static int config_output(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ MaskedMergeContext *s = ctx->priv;
+ AVFilterLink *base = ctx->inputs[0];
+ AVFilterLink *overlay = ctx->inputs[1];
+ AVFilterLink *mask = ctx->inputs[2];
+ FFFrameSyncIn *in;
+ int ret;
+
+ if (base->format != overlay->format ||
+ base->format != mask->format) {
+ av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
+ return AVERROR(EINVAL);
+ }
+ if (base->w != overlay->w ||
+ base->h != overlay->h ||
+ base->sample_aspect_ratio.num != overlay->sample_aspect_ratio.num ||
+ base->sample_aspect_ratio.den != overlay->sample_aspect_ratio.den ||
+ base->w != mask->w ||
+ base->h != mask->h ||
+ base->sample_aspect_ratio.num != mask->sample_aspect_ratio.num ||
+ base->sample_aspect_ratio.den != mask->sample_aspect_ratio.den) {
+ av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
+ "(size %dx%d, SAR %d:%d) do not match the corresponding "
+ "second input link %s parameters (%dx%d, SAR %d:%d) "
+ "and/or third input link %s parameters (%dx%d, SAR %d:%d)\n",
+ ctx->input_pads[0].name, base->w, base->h,
+ base->sample_aspect_ratio.num,
+ base->sample_aspect_ratio.den,
+ ctx->input_pads[1].name, overlay->w, overlay->h,
+ overlay->sample_aspect_ratio.num,
+ overlay->sample_aspect_ratio.den,
+ ctx->input_pads[2].name, mask->w, mask->h,
+ mask->sample_aspect_ratio.num,
+ mask->sample_aspect_ratio.den);
+ return AVERROR(EINVAL);
+ }
+
+ outlink->w = base->w;
+ outlink->h = base->h;
+ outlink->time_base = base->time_base;
+ outlink->sample_aspect_ratio = base->sample_aspect_ratio;
+ outlink->frame_rate = base->frame_rate;
+
+ if ((ret = ff_framesync_init(&s->fs, ctx, 3)) < 0)
+ return ret;
+
+ in = s->fs.in;
+ in[0].time_base = base->time_base;
+ in[1].time_base = overlay->time_base;
+ in[2].time_base = mask->time_base;
+ in[0].sync = 1;
+ in[0].before = EXT_STOP;
+ in[0].after = EXT_INFINITY;
+ in[1].sync = 1;
+ in[1].before = EXT_STOP;
+ in[1].after = EXT_INFINITY;
+ in[2].sync = 1;
+ in[2].before = EXT_STOP;
+ in[2].after = EXT_INFINITY;
+ s->fs.opaque = s;
+ s->fs.on_event = process_frame;
+
+ return ff_framesync_configure(&s->fs);
+}
+
+static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
+{
+ MaskedMergeContext *s = inlink->dst->priv;
+ return ff_framesync_filter_frame(&s->fs, inlink, buf);
+}
+
+static int request_frame(AVFilterLink *outlink)
+{
+ MaskedMergeContext *s = outlink->src->priv;
+ return ff_framesync_request_frame(&s->fs, outlink);
+}
+
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ MaskedMergeContext *s = ctx->priv;
+
+ ff_framesync_uninit(&s->fs);
+}
+
+static const AVFilterPad maskedmerge_inputs[] = {
+ {
+ .name = "base",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ .config_props = config_input,
+ },
+ {
+ .name = "overlay",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ },
+ {
+ .name = "mask",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ },
+ { NULL }
+};
+
+static const AVFilterPad maskedmerge_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_output,
+ .request_frame = request_frame,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_maskedmerge = {
+ .name = "maskedmerge",
+ .description = NULL_IF_CONFIG_SMALL("Merge first stream with second stream using third stream as mask."),
+ .priv_size = sizeof(MaskedMergeContext),
+ .uninit = uninit,
+ .query_formats = query_formats,
+ .inputs = maskedmerge_inputs,
+ .outputs = maskedmerge_outputs,
+ .priv_class = &maskedmerge_class,
+ .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
+};
--
1.9.1
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