476 lines
15 KiB
C
476 lines
15 KiB
C
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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/parseutils.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "drawutils.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 StackItem {
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int x[4], y[4];
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int linesize[4];
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int height[4];
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} StackItem;
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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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char *layout;
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int shortest;
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int is_vertical;
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int is_horizontal;
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int nb_planes;
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uint8_t fillcolor[4];
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char *fillcolor_str;
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int fillcolor_enable;
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FFDrawContext draw;
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FFDrawColor color;
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StackItem *items;
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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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StackContext *s = ctx->priv;
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int fmt, ret;
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if (s->fillcolor_enable) {
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return ff_set_common_formats(ctx, ff_draw_supported_pixel_formats(0));
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}
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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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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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if (!strcmp(ctx->filter->name, "hstack"))
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s->is_horizontal = 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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s->items = av_calloc(s->nb_inputs, sizeof(*s->items));
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if (!s->items)
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return AVERROR(ENOMEM);
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if (!strcmp(ctx->filter->name, "xstack")) {
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if (strcmp(s->fillcolor_str, "none") &&
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av_parse_color(s->fillcolor, s->fillcolor_str, -1, ctx) >= 0) {
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s->fillcolor_enable = 1;
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} else {
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s->fillcolor_enable = 0;
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}
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if (!s->layout) {
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if (s->nb_inputs == 2) {
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s->layout = av_strdup("0_0|w0_0");
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if (!s->layout)
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return AVERROR(ENOMEM);
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} else {
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av_log(ctx, AV_LOG_ERROR, "No layout specified.\n");
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return AVERROR(EINVAL);
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}
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}
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}
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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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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_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
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{
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StackContext *s = ctx->priv;
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AVFrame *out = arg;
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AVFrame **in = s->frames;
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const int start = (s->nb_inputs * job ) / nb_jobs;
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const int end = (s->nb_inputs * (job+1)) / nb_jobs;
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for (int i = start; i < end; i++) {
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StackItem *item = &s->items[i];
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for (int p = 0; p < s->nb_planes; p++) {
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av_image_copy_plane(out->data[p] + out->linesize[p] * item->y[p] + item->x[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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item->linesize[p], item->height[p]);
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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, 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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out->sample_aspect_ratio = outlink->sample_aspect_ratio;
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if (s->fillcolor_enable)
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ff_fill_rectangle(&s->draw, &s->color, out->data, out->linesize,
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0, 0, outlink->w, outlink->h);
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ctx->internal->execute(ctx, process_slice, out, NULL, FFMIN(s->nb_inputs, ff_filter_get_nb_threads(ctx)));
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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 frame_rate = ctx->inputs[0]->frame_rate;
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AVRational sar = ctx->inputs[0]->sample_aspect_ratio;
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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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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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if (s->is_vertical) {
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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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StackItem *item = &s->items[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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if ((ret = av_image_fill_linesizes(item->linesize, inlink->format, inlink->w)) < 0) {
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return ret;
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}
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item->height[1] = item->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
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item->height[0] = item->height[3] = inlink->h;
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if (i) {
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item->y[1] = item->y[2] = AV_CEIL_RSHIFT(height, s->desc->log2_chroma_h);
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item->y[0] = item->y[3] = height;
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height += ctx->inputs[i]->h;
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}
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}
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} else if (s->is_horizontal) {
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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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StackItem *item = &s->items[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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if ((ret = av_image_fill_linesizes(item->linesize, inlink->format, inlink->w)) < 0) {
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return ret;
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}
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item->height[1] = item->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
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item->height[0] = item->height[3] = inlink->h;
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if (i) {
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if ((ret = av_image_fill_linesizes(item->x, inlink->format, width)) < 0) {
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return ret;
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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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} else {
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char *arg, *p = s->layout, *saveptr = NULL;
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char *arg2, *p2, *saveptr2 = NULL;
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char *arg3, *p3, *saveptr3 = NULL;
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int inw, inh, size;
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if (s->fillcolor_enable) {
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ff_draw_init(&s->draw, ctx->inputs[0]->format, 0);
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ff_draw_color(&s->draw, &s->color, s->fillcolor);
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}
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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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StackItem *item = &s->items[i];
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if (!(arg = av_strtok(p, "|", &saveptr)))
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return AVERROR(EINVAL);
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p = NULL;
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if ((ret = av_image_fill_linesizes(item->linesize, inlink->format, inlink->w)) < 0) {
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return ret;
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}
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item->height[1] = item->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
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item->height[0] = item->height[3] = inlink->h;
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p2 = arg;
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inw = inh = 0;
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for (int j = 0; j < 2; j++) {
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if (!(arg2 = av_strtok(p2, "_", &saveptr2)))
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return AVERROR(EINVAL);
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p2 = NULL;
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p3 = arg2;
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while ((arg3 = av_strtok(p3, "+", &saveptr3))) {
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p3 = NULL;
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if (sscanf(arg3, "w%d", &size) == 1) {
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if (size == i || size < 0 || size >= s->nb_inputs)
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return AVERROR(EINVAL);
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if (!j)
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inw += ctx->inputs[size]->w;
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else
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inh += ctx->inputs[size]->w;
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} else if (sscanf(arg3, "h%d", &size) == 1) {
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if (size == i || size < 0 || size >= s->nb_inputs)
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return AVERROR(EINVAL);
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if (!j)
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inw += ctx->inputs[size]->h;
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else
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inh += ctx->inputs[size]->h;
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} else if (sscanf(arg3, "%d", &size) == 1) {
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if (size < 0)
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return AVERROR(EINVAL);
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if (!j)
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inw += size;
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else
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inh += size;
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} else {
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return AVERROR(EINVAL);
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}
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}
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}
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if ((ret = av_image_fill_linesizes(item->x, inlink->format, inw)) < 0) {
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return ret;
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}
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item->y[1] = item->y[2] = AV_CEIL_RSHIFT(inh, s->desc->log2_chroma_h);
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item->y[0] = item->y[3] = inh;
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width = FFMAX(width, inlink->w + inw);
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height = FFMAX(height, inlink->h + inh);
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}
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}
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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->frame_rate = frame_rate;
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outlink->sample_aspect_ratio = sar;
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for (i = 1; i < s->nb_inputs; i++) {
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AVFilterLink *inlink = ctx->inputs[i];
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if (outlink->frame_rate.num != inlink->frame_rate.num ||
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outlink->frame_rate.den != inlink->frame_rate.den) {
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av_log(ctx, AV_LOG_VERBOSE,
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"Video inputs have different frame rates, output will be VFR\n");
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outlink->frame_rate = av_make_q(1, 0);
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break;
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}
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}
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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;
|
||
|
|
in[i].after = s->shortest ? EXT_STOP : EXT_INFINITY;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = ff_framesync_configure(&s->fs);
|
||
|
|
outlink->time_base = s->fs.time_base;
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
||
|
|
{
|
||
|
|
StackContext *s = ctx->priv;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
ff_framesync_uninit(&s->fs);
|
||
|
|
av_freep(&s->frames);
|
||
|
|
av_freep(&s->items);
|
||
|
|
|
||
|
|
for (i = 0; i < ctx->nb_inputs; i++)
|
||
|
|
av_freep(&ctx->input_pads[i].name);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int activate(AVFilterContext *ctx)
|
||
|
|
{
|
||
|
|
StackContext *s = ctx->priv;
|
||
|
|
return ff_framesync_activate(&s->fs);
|
||
|
|
}
|
||
|
|
|
||
|
|
#define OFFSET(x) offsetof(StackContext, x)
|
||
|
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
|
||
|
|
static const AVOption stack_options[] = {
|
||
|
|
{ "inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=2}, 2, INT_MAX, .flags = FLAGS },
|
||
|
|
{ "shortest", "force termination when the shortest input terminates", OFFSET(shortest), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, .flags = FLAGS },
|
||
|
|
{ NULL },
|
||
|
|
};
|
||
|
|
|
||
|
|
static const AVFilterPad outputs[] = {
|
||
|
|
{
|
||
|
|
.name = "default",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
.config_props = config_output,
|
||
|
|
},
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
#if CONFIG_HSTACK_FILTER
|
||
|
|
|
||
|
|
#define hstack_options stack_options
|
||
|
|
AVFILTER_DEFINE_CLASS(hstack);
|
||
|
|
|
||
|
|
AVFilter ff_vf_hstack = {
|
||
|
|
.name = "hstack",
|
||
|
|
.description = NULL_IF_CONFIG_SMALL("Stack video inputs horizontally."),
|
||
|
|
.priv_size = sizeof(StackContext),
|
||
|
|
.priv_class = &hstack_class,
|
||
|
|
.query_formats = query_formats,
|
||
|
|
.outputs = outputs,
|
||
|
|
.init = init,
|
||
|
|
.uninit = uninit,
|
||
|
|
.activate = activate,
|
||
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_SLICE_THREADS,
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* CONFIG_HSTACK_FILTER */
|
||
|
|
|
||
|
|
#if CONFIG_VSTACK_FILTER
|
||
|
|
|
||
|
|
#define vstack_options stack_options
|
||
|
|
AVFILTER_DEFINE_CLASS(vstack);
|
||
|
|
|
||
|
|
AVFilter ff_vf_vstack = {
|
||
|
|
.name = "vstack",
|
||
|
|
.description = NULL_IF_CONFIG_SMALL("Stack video inputs vertically."),
|
||
|
|
.priv_size = sizeof(StackContext),
|
||
|
|
.priv_class = &vstack_class,
|
||
|
|
.query_formats = query_formats,
|
||
|
|
.outputs = outputs,
|
||
|
|
.init = init,
|
||
|
|
.uninit = uninit,
|
||
|
|
.activate = activate,
|
||
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_SLICE_THREADS,
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* CONFIG_VSTACK_FILTER */
|
||
|
|
|
||
|
|
#if CONFIG_XSTACK_FILTER
|
||
|
|
|
||
|
|
static const AVOption xstack_options[] = {
|
||
|
|
{ "inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=2}, 2, INT_MAX, .flags = FLAGS },
|
||
|
|
{ "layout", "set custom layout", OFFSET(layout), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, .flags = FLAGS },
|
||
|
|
{ "shortest", "force termination when the shortest input terminates", OFFSET(shortest), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, .flags = FLAGS },
|
||
|
|
{ "fill", "set the color for unused pixels", OFFSET(fillcolor_str), AV_OPT_TYPE_STRING, {.str = "none"}, .flags = FLAGS },
|
||
|
|
{ NULL },
|
||
|
|
};
|
||
|
|
|
||
|
|
AVFILTER_DEFINE_CLASS(xstack);
|
||
|
|
|
||
|
|
AVFilter ff_vf_xstack = {
|
||
|
|
.name = "xstack",
|
||
|
|
.description = NULL_IF_CONFIG_SMALL("Stack video inputs into custom layout."),
|
||
|
|
.priv_size = sizeof(StackContext),
|
||
|
|
.priv_class = &xstack_class,
|
||
|
|
.query_formats = query_formats,
|
||
|
|
.outputs = outputs,
|
||
|
|
.init = init,
|
||
|
|
.uninit = uninit,
|
||
|
|
.activate = activate,
|
||
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_SLICE_THREADS,
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* CONFIG_XSTACK_FILTER */
|