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https://github.com/FFmpeg/FFmpeg.git
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avfilter: add hstack & vstack filter
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
parent
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commit
319440e54f
@ -34,6 +34,7 @@ version <next>:
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- showfreqs filter
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- vectorscope filter
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- waveform filter
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- hstack and vstack filter
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version 2.7:
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@ -6589,6 +6589,21 @@ Set the scaling dimension: @code{2} for @code{hq2x}, @code{3} for
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Default is @code{3}.
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@end table
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@section hstack
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Stack input videos horizontally.
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All streams must be of same pixel format and of same height.
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Note that this filter is faster than using @ref{overlay} and @ref{pad} filter
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to create same output.
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The filter accept the following option:
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@table @option
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@item nb_inputs
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Set number of input streams. Default is 2.
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@end table
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@section hue
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Modify the hue and/or the saturation of the input.
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@ -7736,6 +7751,7 @@ Set chroma strength.
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Must be a double value in the range 0-1000, default is @code{1.0}.
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@end table
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@anchor{pad}
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@section pad
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Add paddings to the input image, and place the original input at the
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@ -10892,6 +10908,21 @@ vignette='PI/4+random(1)*PI/50':eval=frame
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@end itemize
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@section vstack
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Stack input videos vertically.
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All streams must be of same pixel format and of same width.
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Note that this filter is faster than using @ref{overlay} and @ref{pad} filter
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to create same output.
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The filter accept the following option:
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@table @option
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@item nb_inputs
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Set number of input streams. Default is 2.
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@end table
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@section w3fdif
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Deinterlace the input video ("w3fdif" stands for "Weston 3 Field
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@ -153,6 +153,7 @@ OBJS-$(CONFIG_HISTEQ_FILTER) += vf_histeq.o
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OBJS-$(CONFIG_HISTOGRAM_FILTER) += vf_histogram.o
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OBJS-$(CONFIG_HQDN3D_FILTER) += vf_hqdn3d.o
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OBJS-$(CONFIG_HQX_FILTER) += vf_hqx.o
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OBJS-$(CONFIG_HSTACK_FILTER) += vf_stack.o framesync.o
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OBJS-$(CONFIG_HUE_FILTER) += vf_hue.o
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OBJS-$(CONFIG_IDET_FILTER) += vf_idet.o
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OBJS-$(CONFIG_IL_FILTER) += vf_il.o
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@ -231,6 +232,7 @@ OBJS-$(CONFIG_VFLIP_FILTER) += vf_vflip.o
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OBJS-$(CONFIG_VIDSTABDETECT_FILTER) += vidstabutils.o vf_vidstabdetect.o
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OBJS-$(CONFIG_VIDSTABTRANSFORM_FILTER) += vidstabutils.o vf_vidstabtransform.o
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OBJS-$(CONFIG_VIGNETTE_FILTER) += vf_vignette.o
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OBJS-$(CONFIG_VSTACK_FILTER) += vf_stack.o framesync.o
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OBJS-$(CONFIG_W3FDIF_FILTER) += vf_w3fdif.o
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OBJS-$(CONFIG_WAVEFORM_FILTER) += vf_waveform.o
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OBJS-$(CONFIG_XBR_FILTER) += vf_xbr.o
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@ -169,6 +169,7 @@ void avfilter_register_all(void)
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REGISTER_FILTER(HISTOGRAM, histogram, vf);
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REGISTER_FILTER(HQDN3D, hqdn3d, vf);
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REGISTER_FILTER(HQX, hqx, vf);
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REGISTER_FILTER(HSTACK, hstack, vf);
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REGISTER_FILTER(HUE, hue, vf);
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REGISTER_FILTER(IDET, idet, vf);
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REGISTER_FILTER(IL, il, vf);
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@ -246,6 +247,7 @@ void avfilter_register_all(void)
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REGISTER_FILTER(VIDSTABDETECT, vidstabdetect, vf);
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REGISTER_FILTER(VIDSTABTRANSFORM, vidstabtransform, vf);
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REGISTER_FILTER(VIGNETTE, vignette, vf);
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REGISTER_FILTER(VSTACK, vstack, vf);
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REGISTER_FILTER(W3FDIF, w3fdif, vf);
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REGISTER_FILTER(WAVEFORM, waveform, vf);
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REGISTER_FILTER(XBR, xbr, vf);
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@ -30,7 +30,7 @@
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#include "libavutil/version.h"
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#define LIBAVFILTER_VERSION_MAJOR 5
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#define LIBAVFILTER_VERSION_MINOR 37
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#define LIBAVFILTER_VERSION_MINOR 38
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#define LIBAVFILTER_VERSION_MICRO 100
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#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
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271
libavfilter/vf_stack.c
Normal file
271
libavfilter/vf_stack.c
Normal file
@ -0,0 +1,271 @@
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/*
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* Copyright (c) 2015 Paul B. Mahol
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/avstring.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "internal.h"
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#include "framesync.h"
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#include "video.h"
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typedef struct StackContext {
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const AVClass *class;
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const AVPixFmtDescriptor *desc;
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int nb_inputs;
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int is_vertical;
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int nb_planes;
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AVFrame **frames;
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FFFrameSync fs;
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} StackContext;
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static int query_formats(AVFilterContext *ctx)
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{
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AVFilterFormats *pix_fmts = NULL;
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int fmt;
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for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
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if (!(desc->flags & AV_PIX_FMT_FLAG_PAL ||
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desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
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desc->flags & AV_PIX_FMT_FLAG_BITSTREAM))
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ff_add_format(&pix_fmts, fmt);
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}
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return ff_set_common_formats(ctx, pix_fmts);
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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StackContext *s = inlink->dst->priv;
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return ff_framesync_filter_frame(&s->fs, inlink, in);
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}
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static av_cold int init(AVFilterContext *ctx)
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{
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StackContext *s = ctx->priv;
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int i, ret;
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if (!strcmp(ctx->filter->name, "vstack"))
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s->is_vertical = 1;
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s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
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if (!s->frames)
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return AVERROR(ENOMEM);
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for (i = 0; i < s->nb_inputs; i++) {
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AVFilterPad pad = { 0 };
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pad.type = AVMEDIA_TYPE_VIDEO;
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pad.name = av_asprintf("input%d", i);
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if (!pad.name)
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return AVERROR(ENOMEM);
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pad.filter_frame = filter_frame;
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if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) {
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av_freep(&pad.name);
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return ret;
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}
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}
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return 0;
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}
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static int process_frame(FFFrameSync *fs)
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{
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AVFilterContext *ctx = fs->parent;
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AVFilterLink *outlink = ctx->outputs[0];
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StackContext *s = fs->opaque;
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AVFrame **in = s->frames;
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AVFrame *out;
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int i, p, ret, offset[4] = { 0 };
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for (i = 0; i < s->nb_inputs; i++) {
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if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0)
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return ret;
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}
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!out)
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return AVERROR(ENOMEM);
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out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
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for (i = 0; i < s->nb_inputs; i++) {
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AVFilterLink *inlink = ctx->inputs[i];
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int linesize[4];
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int height[4];
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if ((ret = av_image_fill_linesizes(linesize, inlink->format, inlink->w)) < 0)
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return ret;
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height[1] = height[2] = FF_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
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height[0] = height[3] = inlink->h;
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for (p = 0; p < s->nb_planes; p++) {
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if (s->is_vertical) {
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av_image_copy_plane(out->data[p] + offset[p] * out->linesize[p],
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out->linesize[p],
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in[i]->data[p],
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in[i]->linesize[p],
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linesize[p], height[p]);
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offset[p] += height[p];
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} else {
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av_image_copy_plane(out->data[p] + offset[p],
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out->linesize[p],
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in[i]->data[p],
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in[i]->linesize[p],
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linesize[p], height[p]);
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offset[p] += linesize[p];
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}
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}
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}
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return ff_filter_frame(outlink, out);
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}
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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StackContext *s = ctx->priv;
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AVRational time_base = ctx->inputs[0]->time_base;
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AVRational frame_rate = ctx->inputs[0]->frame_rate;
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int height = ctx->inputs[0]->h;
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int width = ctx->inputs[0]->w;
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FFFrameSyncIn *in;
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int i, ret;
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if (s->is_vertical) {
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for (i = 1; i < s->nb_inputs; i++) {
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if (ctx->inputs[i]->w != width) {
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av_log(ctx, AV_LOG_ERROR, "Input %d width %d does not match input %d width %d.\n", i, ctx->inputs[i]->w, 0, width);
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return AVERROR(EINVAL);
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}
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height += ctx->inputs[i]->h;
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}
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} else {
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for (i = 1; i < s->nb_inputs; i++) {
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if (ctx->inputs[i]->h != height) {
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av_log(ctx, AV_LOG_ERROR, "Input %d height %d does not match input %d height %d.\n", i, ctx->inputs[i]->h, 0, height);
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return AVERROR(EINVAL);
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}
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width += ctx->inputs[i]->w;
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}
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}
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s->desc = av_pix_fmt_desc_get(outlink->format);
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if (!s->desc)
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return AVERROR_BUG;
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s->nb_planes = av_pix_fmt_count_planes(outlink->format);
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outlink->w = width;
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outlink->h = height;
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outlink->time_base = time_base;
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outlink->frame_rate = frame_rate;
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if ((ret = ff_framesync_init(&s->fs, ctx, s->nb_inputs)) < 0)
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return ret;
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in = s->fs.in;
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s->fs.opaque = s;
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s->fs.on_event = process_frame;
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for (i = 0; i < s->nb_inputs; i++) {
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AVFilterLink *inlink = ctx->inputs[i];
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in[i].time_base = inlink->time_base;
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in[i].sync = 1;
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in[i].before = EXT_STOP;
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in[i].after = EXT_INFINITY;
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}
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return ff_framesync_configure(&s->fs);
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}
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static int request_frame(AVFilterLink *outlink)
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{
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StackContext *s = outlink->src->priv;
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return ff_framesync_request_frame(&s->fs, outlink);
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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StackContext *s = ctx->priv;
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ff_framesync_uninit(&s->fs);
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av_freep(&s->frames);
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}
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#define OFFSET(x) offsetof(StackContext, x)
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
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static const AVOption stack_options[] = {
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{ "inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=2}, 2, INT_MAX, .flags = FLAGS },
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{ NULL },
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};
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static const AVFilterPad outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = config_output,
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.request_frame = request_frame,
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},
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{ NULL }
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};
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#if CONFIG_HSTACK_FILTER
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#define hstack_options stack_options
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AVFILTER_DEFINE_CLASS(hstack);
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AVFilter ff_vf_hstack = {
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.name = "hstack",
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.description = NULL_IF_CONFIG_SMALL("Stack video inputs horizontally."),
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.priv_size = sizeof(StackContext),
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.priv_class = &hstack_class,
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.query_formats = query_formats,
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.outputs = outputs,
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.init = init,
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.uninit = uninit,
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.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
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};
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#endif /* CONFIG_HSTACK_FILTER */
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#if CONFIG_VSTACK_FILTER
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#define vstack_options stack_options
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AVFILTER_DEFINE_CLASS(vstack);
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AVFilter ff_vf_vstack = {
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.name = "vstack",
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.description = NULL_IF_CONFIG_SMALL("Stack video inputs vertically."),
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.priv_size = sizeof(StackContext),
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.priv_class = &vstack_class,
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.query_formats = query_formats,
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.outputs = outputs,
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.init = init,
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.uninit = uninit,
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.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
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};
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#endif /* CONFIG_VSTACK_FILTER */
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