2017-11-20 20:58:44 +02:00
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/*
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* Copyright (c) 2017 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/intreadwrite.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 MixContext {
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const AVClass *class;
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const AVPixFmtDescriptor *desc;
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char *weights_str;
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int nb_inputs;
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int duration;
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float *weights;
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2018-04-24 14:45:19 +02:00
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float scale;
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2017-11-20 20:58:44 +02:00
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float wfactor;
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2018-04-24 13:45:13 +02:00
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int tmix;
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int nb_frames;
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2017-11-20 20:58:44 +02:00
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int depth;
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2018-04-25 13:07:34 +02:00
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int max;
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2017-11-20 20:58:44 +02:00
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int nb_planes;
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int linesize[4];
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int height[4];
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AVFrame **frames;
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FFFrameSync fs;
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} MixContext;
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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, ret;
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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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(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 av_cold int init(AVFilterContext *ctx)
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{
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MixContext *s = ctx->priv;
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char *p, *arg, *saveptr = NULL;
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2018-04-30 20:42:17 +02:00
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int i, ret, last = 0;
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2017-11-20 20:58:44 +02:00
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2018-04-24 13:45:13 +02:00
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s->tmix = !strcmp(ctx->filter->name, "tmix");
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2017-11-20 20:58:44 +02:00
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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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s->weights = av_calloc(s->nb_inputs, sizeof(*s->weights));
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if (!s->weights)
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return AVERROR(ENOMEM);
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2018-04-24 13:45:13 +02:00
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if (!s->tmix) {
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for (i = 0; i < s->nb_inputs; i++) {
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AVFilterPad pad = { 0 };
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2017-11-20 20:58:44 +02:00
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2018-04-24 13:45:13 +02:00
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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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2017-11-20 20:58:44 +02:00
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2018-04-24 13:45:13 +02:00
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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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2017-11-20 20:58:44 +02:00
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}
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}
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p = s->weights_str;
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for (i = 0; i < s->nb_inputs; i++) {
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if (!(arg = av_strtok(p, " ", &saveptr)))
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break;
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p = NULL;
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2020-03-29 03:08:13 +02:00
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if (av_sscanf(arg, "%f", &s->weights[i]) != 1) {
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av_log(ctx, AV_LOG_ERROR, "Invalid syntax for weights[%d].\n", i);
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return AVERROR(EINVAL);
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}
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2017-11-20 20:58:44 +02:00
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s->wfactor += s->weights[i];
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2018-04-29 19:27:15 +02:00
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last = i;
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}
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for (; i < s->nb_inputs; i++) {
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s->weights[i] = s->weights[last];
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s->wfactor += s->weights[i];
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2017-11-20 20:58:44 +02:00
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}
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2018-04-24 14:45:19 +02:00
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if (s->scale == 0) {
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s->wfactor = 1 / s->wfactor;
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} else {
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s->wfactor = s->scale;
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}
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2017-11-20 20:58:44 +02:00
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return 0;
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}
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2018-04-27 11:32:50 +02:00
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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 mix_frames(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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2017-11-20 20:58:44 +02:00
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{
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2018-04-27 11:32:50 +02:00
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MixContext *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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2018-04-24 13:45:13 +02:00
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int i, p, x, y;
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2017-11-20 20:58:44 +02:00
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if (s->depth <= 8) {
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for (p = 0; p < s->nb_planes; p++) {
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2018-04-27 11:32:50 +02:00
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const int slice_start = (s->height[p] * jobnr) / nb_jobs;
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const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
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uint8_t *dst = out->data[p] + slice_start * out->linesize[p];
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2017-11-20 20:58:44 +02:00
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2018-04-27 11:32:50 +02:00
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for (y = slice_start; y < slice_end; y++) {
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2017-11-20 20:58:44 +02:00
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for (x = 0; x < s->linesize[p]; x++) {
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int val = 0;
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for (i = 0; i < s->nb_inputs; i++) {
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2018-04-27 19:15:55 +02:00
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uint8_t src = in[i]->data[p][y * in[i]->linesize[p] + x];
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2017-11-20 20:58:44 +02:00
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val += src * s->weights[i];
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}
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2018-04-25 13:07:34 +02:00
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dst[x] = av_clip_uint8(val * s->wfactor);
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2017-11-20 20:58:44 +02:00
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}
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dst += out->linesize[p];
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}
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}
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} else {
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for (p = 0; p < s->nb_planes; p++) {
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2018-04-27 11:32:50 +02:00
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const int slice_start = (s->height[p] * jobnr) / nb_jobs;
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const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
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uint16_t *dst = (uint16_t *)(out->data[p] + slice_start * out->linesize[p]);
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2017-11-20 20:58:44 +02:00
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2018-04-27 11:32:50 +02:00
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for (y = slice_start; y < slice_end; y++) {
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2018-04-25 14:08:21 +02:00
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for (x = 0; x < s->linesize[p] / 2; x++) {
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2017-11-20 20:58:44 +02:00
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int val = 0;
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for (i = 0; i < s->nb_inputs; i++) {
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2018-04-27 19:15:55 +02:00
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uint16_t src = AV_RN16(in[i]->data[p] + y * in[i]->linesize[p] + x * 2);
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2017-11-20 20:58:44 +02:00
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val += src * s->weights[i];
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}
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2018-04-25 13:07:34 +02:00
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dst[x] = av_clip(val * s->wfactor, 0, s->max);
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2017-11-20 20:58:44 +02:00
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}
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dst += out->linesize[p] / 2;
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}
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}
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}
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2018-04-27 11:32:50 +02:00
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return 0;
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2018-04-24 13:45:13 +02:00
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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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MixContext *s = fs->opaque;
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AVFrame **in = s->frames;
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AVFrame *out;
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2018-04-27 11:32:50 +02:00
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ThreadData td;
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2018-04-24 13:45:13 +02:00
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int i, ret;
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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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2018-04-27 11:32:50 +02:00
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td.in = in;
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td.out = out;
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ctx->internal->execute(ctx, mix_frames, &td, NULL, FFMIN(s->height[0], ff_filter_get_nb_threads(ctx)));
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2017-11-20 20:58:44 +02:00
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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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MixContext *s = ctx->priv;
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AVRational frame_rate = ctx->inputs[0]->frame_rate;
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2019-05-24 18:35:27 +02:00
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AVRational sar = ctx->inputs[0]->sample_aspect_ratio;
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2017-11-20 20:58:44 +02:00
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AVFilterLink *inlink = ctx->inputs[0];
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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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2018-04-24 13:45:13 +02:00
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if (!s->tmix) {
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for (i = 1; i < s->nb_inputs; i++) {
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if (ctx->inputs[i]->h != height || ctx->inputs[i]->w != width) {
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av_log(ctx, AV_LOG_ERROR, "Input %d size (%dx%d) does not match input %d size (%dx%d).\n", i, ctx->inputs[i]->w, ctx->inputs[i]->h, 0, width, height);
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return AVERROR(EINVAL);
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}
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2017-11-20 20:58:44 +02:00
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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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s->depth = s->desc->comp[0].depth;
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2018-04-25 13:07:34 +02:00
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s->max = (1 << s->depth) - 1;
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2017-11-20 20:58:44 +02:00
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2018-04-24 13:45:13 +02:00
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if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
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return ret;
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s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
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s->height[0] = s->height[3] = inlink->h;
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if (s->tmix)
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return 0;
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2017-11-20 20:58:44 +02:00
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outlink->w = width;
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outlink->h = height;
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outlink->frame_rate = frame_rate;
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2019-05-24 18:35:27 +02:00
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outlink->sample_aspect_ratio = sar;
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2017-11-20 20:58:44 +02:00
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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 = (s->duration == 1 || (s->duration == 2 && i == 0)) ? EXT_STOP : EXT_INFINITY;
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}
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2019-05-24 18:33:16 +02:00
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ret = ff_framesync_configure(&s->fs);
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outlink->time_base = s->fs.time_base;
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return ret;
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2017-11-20 20:58:44 +02:00
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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MixContext *s = ctx->priv;
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int i;
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ff_framesync_uninit(&s->fs);
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av_freep(&s->weights);
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2018-04-24 13:45:13 +02:00
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if (!s->tmix) {
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for (i = 0; i < ctx->nb_inputs; i++)
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av_freep(&ctx->input_pads[i].name);
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} else {
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2020-04-13 16:44:01 +02:00
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for (i = 0; i < s->nb_frames && s->frames; i++)
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2018-04-24 13:45:13 +02:00
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av_frame_free(&s->frames[i]);
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}
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av_freep(&s->frames);
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2017-11-20 20:58:44 +02:00
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}
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static int activate(AVFilterContext *ctx)
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{
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MixContext *s = ctx->priv;
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return ff_framesync_activate(&s->fs);
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}
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#define OFFSET(x) offsetof(MixContext, x)
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
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static const AVOption mix_options[] = {
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2020-01-06 15:48:39 +02:00
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{ "inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=2}, 2, INT16_MAX, .flags = FLAGS },
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2017-11-20 20:58:44 +02:00
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{ "weights", "set weight for each input", OFFSET(weights_str), AV_OPT_TYPE_STRING, {.str="1 1"}, 0, 0, .flags = FLAGS },
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2018-04-24 14:45:19 +02:00
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{ "scale", "set scale", OFFSET(scale), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, INT16_MAX, .flags = FLAGS },
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2017-11-20 20:58:44 +02:00
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|
|
{ "duration", "how to determine end of stream", OFFSET(duration), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, .flags = FLAGS, "duration" },
|
|
|
|
{ "longest", "Duration of longest input", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "duration" },
|
|
|
|
{ "shortest", "Duration of shortest input", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "duration" },
|
|
|
|
{ "first", "Duration of first input", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "duration" },
|
|
|
|
{ NULL },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const AVFilterPad outputs[] = {
|
|
|
|
{
|
|
|
|
.name = "default",
|
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
|
|
.config_props = config_output,
|
|
|
|
},
|
|
|
|
{ NULL }
|
|
|
|
};
|
|
|
|
|
2018-04-24 13:45:13 +02:00
|
|
|
#if CONFIG_MIX_FILTER
|
2017-11-20 20:58:44 +02:00
|
|
|
AVFILTER_DEFINE_CLASS(mix);
|
|
|
|
|
|
|
|
AVFilter ff_vf_mix = {
|
|
|
|
.name = "mix",
|
|
|
|
.description = NULL_IF_CONFIG_SMALL("Mix video inputs."),
|
|
|
|
.priv_size = sizeof(MixContext),
|
|
|
|
.priv_class = &mix_class,
|
|
|
|
.query_formats = query_formats,
|
|
|
|
.outputs = outputs,
|
|
|
|
.init = init,
|
|
|
|
.uninit = uninit,
|
|
|
|
.activate = activate,
|
2018-04-27 11:32:50 +02:00
|
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_SLICE_THREADS,
|
2017-11-20 20:58:44 +02:00
|
|
|
};
|
2018-04-24 13:45:13 +02:00
|
|
|
|
|
|
|
#endif /* CONFIG_MIX_FILTER */
|
|
|
|
|
|
|
|
#if CONFIG_TMIX_FILTER
|
|
|
|
static int tmix_filter_frame(AVFilterLink *inlink, AVFrame *in)
|
|
|
|
{
|
|
|
|
AVFilterContext *ctx = inlink->dst;
|
|
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
|
|
MixContext *s = ctx->priv;
|
2018-04-27 11:32:50 +02:00
|
|
|
ThreadData td;
|
2018-04-24 13:45:13 +02:00
|
|
|
AVFrame *out;
|
|
|
|
|
2019-02-02 19:52:03 +02:00
|
|
|
if (s->nb_inputs == 1)
|
|
|
|
return ff_filter_frame(outlink, in);
|
|
|
|
|
2018-04-24 13:45:13 +02:00
|
|
|
if (s->nb_frames < s->nb_inputs) {
|
|
|
|
s->frames[s->nb_frames] = in;
|
|
|
|
s->nb_frames++;
|
2019-02-02 19:54:54 +02:00
|
|
|
if (s->nb_frames < s->nb_inputs)
|
|
|
|
return 0;
|
2018-04-24 13:45:13 +02:00
|
|
|
} else {
|
|
|
|
av_frame_free(&s->frames[0]);
|
|
|
|
memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1));
|
|
|
|
s->frames[s->nb_inputs - 1] = in;
|
|
|
|
}
|
|
|
|
|
2019-02-02 19:52:03 +02:00
|
|
|
if (ctx->is_disabled) {
|
|
|
|
out = av_frame_clone(s->frames[0]);
|
|
|
|
if (!out)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
return ff_filter_frame(outlink, out);
|
|
|
|
}
|
|
|
|
|
2018-04-24 13:45:13 +02:00
|
|
|
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
|
|
|
|
if (!out)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
out->pts = s->frames[0]->pts;
|
|
|
|
|
2018-04-27 11:32:50 +02:00
|
|
|
td.out = out;
|
|
|
|
td.in = s->frames;
|
|
|
|
ctx->internal->execute(ctx, mix_frames, &td, NULL, FFMIN(s->height[0], ff_filter_get_nb_threads(ctx)));
|
2018-04-24 13:45:13 +02:00
|
|
|
|
|
|
|
return ff_filter_frame(outlink, out);
|
|
|
|
}
|
|
|
|
|
|
|
|
static const AVOption tmix_options[] = {
|
2019-02-02 19:52:03 +02:00
|
|
|
{ "frames", "set number of successive frames to mix", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=3}, 1, 128, .flags = FLAGS },
|
2018-04-24 13:45:13 +02:00
|
|
|
{ "weights", "set weight for each frame", OFFSET(weights_str), AV_OPT_TYPE_STRING, {.str="1 1 1"}, 0, 0, .flags = FLAGS },
|
2018-04-24 14:45:19 +02:00
|
|
|
{ "scale", "set scale", OFFSET(scale), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, INT16_MAX, .flags = FLAGS },
|
2018-04-24 13:45:13 +02:00
|
|
|
{ NULL },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const AVFilterPad inputs[] = {
|
|
|
|
{
|
|
|
|
.name = "default",
|
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
|
|
.filter_frame = tmix_filter_frame,
|
|
|
|
},
|
|
|
|
{ NULL }
|
|
|
|
};
|
|
|
|
|
|
|
|
AVFILTER_DEFINE_CLASS(tmix);
|
|
|
|
|
|
|
|
AVFilter ff_vf_tmix = {
|
|
|
|
.name = "tmix",
|
|
|
|
.description = NULL_IF_CONFIG_SMALL("Mix successive video frames."),
|
|
|
|
.priv_size = sizeof(MixContext),
|
|
|
|
.priv_class = &tmix_class,
|
|
|
|
.query_formats = query_formats,
|
|
|
|
.outputs = outputs,
|
|
|
|
.inputs = inputs,
|
|
|
|
.init = init,
|
|
|
|
.uninit = uninit,
|
2019-02-02 19:52:03 +02:00
|
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
|
2018-04-24 13:45:13 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
#endif /* CONFIG_TMIX_FILTER */
|