mirror of
https://github.com/FFmpeg/FFmpeg.git
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de288e406a
This filter only had an AVClass and empty options because up until recently, avfilter_init_str() errored out when options were provided for a filter without an AVClass. But setting (generic) options is necessary to take advantage of timeline support. So with avfilter_init_str() fixed, the AVClass and the options can be removed. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
156 lines
4.8 KiB
C
156 lines
4.8 KiB
C
/*
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* Copyright (c) 2007 Benoit Fouet
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* Copyright (c) 2010 Stefano Sabatini
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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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/**
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* @file
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* horizontal flip filter
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*/
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#include <string.h>
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#include "avfilter.h"
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#include "formats.h"
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#include "hflip.h"
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#include "internal.h"
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#include "vf_hflip_init.h"
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#include "video.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/internal.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/imgutils.h"
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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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const AVPixFmtDescriptor *desc;
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int fmt, ret;
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for (fmt = 0; desc = av_pix_fmt_desc_get(fmt); fmt++) {
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if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
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desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ||
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(desc->log2_chroma_w != desc->log2_chroma_h &&
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desc->comp[0].plane == desc->comp[1].plane)) &&
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(ret = ff_add_format(&pix_fmts, fmt)) < 0)
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return ret;
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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 config_props(AVFilterLink *inlink)
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{
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FlipContext *s = inlink->dst->priv;
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const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
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const int hsub = pix_desc->log2_chroma_w;
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const int vsub = pix_desc->log2_chroma_h;
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int nb_planes;
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av_image_fill_max_pixsteps(s->max_step, NULL, pix_desc);
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s->planewidth[0] = s->planewidth[3] = inlink->w;
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s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
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s->planeheight[0] = s->planeheight[3] = inlink->h;
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s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
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s->bayer_plus1 = !!(pix_desc->flags & AV_PIX_FMT_FLAG_BAYER) + 1;
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nb_planes = av_pix_fmt_count_planes(inlink->format);
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return ff_hflip_init(s, s->max_step, nb_planes);
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}
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typedef struct ThreadData {
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AVFrame *in, *out;
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} ThreadData;
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static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
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{
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FlipContext *s = ctx->priv;
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ThreadData *td = arg;
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AVFrame *in = td->in;
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AVFrame *out = td->out;
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uint8_t *inrow, *outrow;
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int i, plane, step;
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for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
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const int width = s->planewidth[plane] / s->bayer_plus1;
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const int height = s->planeheight[plane];
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const int start = (height * job ) / nb_jobs;
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const int end = (height * (job+1)) / nb_jobs;
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step = s->max_step[plane];
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outrow = out->data[plane] + start * out->linesize[plane];
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inrow = in ->data[plane] + start * in->linesize[plane] + (width - 1) * step;
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for (i = start; i < end; i++) {
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s->flip_line[plane](inrow, outrow, width);
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inrow += in ->linesize[plane];
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outrow += out->linesize[plane];
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}
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}
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return 0;
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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AVFilterContext *ctx = inlink->dst;
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AVFilterLink *outlink = ctx->outputs[0];
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ThreadData td;
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AVFrame *out;
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!out) {
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av_frame_free(&in);
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return AVERROR(ENOMEM);
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}
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av_frame_copy_props(out, in);
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/* copy palette if required */
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if (av_pix_fmt_desc_get(inlink->format)->flags & AV_PIX_FMT_FLAG_PAL)
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memcpy(out->data[1], in->data[1], AVPALETTE_SIZE);
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td.in = in, td.out = out;
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ff_filter_execute(ctx, filter_slice, &td, NULL,
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FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
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av_frame_free(&in);
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return ff_filter_frame(outlink, out);
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}
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static const AVFilterPad avfilter_vf_hflip_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = filter_frame,
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.config_props = config_props,
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},
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};
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const AVFilter ff_vf_hflip = {
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.name = "hflip",
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.description = NULL_IF_CONFIG_SMALL("Horizontally flip the input video."),
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.priv_size = sizeof(FlipContext),
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FILTER_INPUTS(avfilter_vf_hflip_inputs),
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FILTER_OUTPUTS(ff_video_default_filterpad),
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FILTER_QUERY_FUNC(query_formats),
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.flags = AVFILTER_FLAG_SLICE_THREADS | AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
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};
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