mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
315 lines
10 KiB
C
315 lines
10 KiB
C
/*
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* Copyright (c) 2013 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/avassert.h"
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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 "internal.h"
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#include "framesync.h"
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typedef struct InputParam {
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int depth[4];
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int nb_planes;
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int planewidth[4];
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int planeheight[4];
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} InputParam;
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typedef struct MergePlanesContext {
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const AVClass *class;
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int64_t mapping;
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const enum AVPixelFormat out_fmt;
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int nb_inputs;
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int nb_planes;
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int planewidth[4];
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int planeheight[4];
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int map[4][2];
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const AVPixFmtDescriptor *outdesc;
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FFFrameSync fs;
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} MergePlanesContext;
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#define OFFSET(x) offsetof(MergePlanesContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption mergeplanes_options[] = {
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{ "mapping", "set input to output plane mapping", OFFSET(mapping), AV_OPT_TYPE_INT, {.i64=0}, 0, 0x33333333, FLAGS },
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{ "format", "set output pixel format", OFFSET(out_fmt), AV_OPT_TYPE_PIXEL_FMT, {.i64=AV_PIX_FMT_YUVA444P}, 0, INT_MAX, .flags=FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(mergeplanes);
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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MergePlanesContext *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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MergePlanesContext *s = ctx->priv;
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int64_t m = s->mapping;
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int i, ret;
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s->outdesc = av_pix_fmt_desc_get(s->out_fmt);
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if (!(s->outdesc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
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s->outdesc->nb_components < 2) {
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av_log(ctx, AV_LOG_ERROR, "Only planar formats with more than one component are supported.\n");
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return AVERROR(EINVAL);
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}
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s->nb_planes = av_pix_fmt_count_planes(s->out_fmt);
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for (i = s->nb_planes - 1; i >= 0; i--) {
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s->map[i][0] = m & 0xf;
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m >>= 4;
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s->map[i][1] = m & 0xf;
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m >>= 4;
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if (s->map[i][0] > 3 || s->map[i][1] > 3) {
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av_log(ctx, AV_LOG_ERROR, "Mapping with out of range input and/or plane number.\n");
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return AVERROR(EINVAL);
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}
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s->nb_inputs = FFMAX(s->nb_inputs, s->map[i][1] + 1);
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}
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av_assert0(s->nb_inputs && s->nb_inputs <= 4);
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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("in%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 query_formats(AVFilterContext *ctx)
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{
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MergePlanesContext *s = ctx->priv;
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AVFilterFormats *formats = NULL;
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int i;
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s->outdesc = av_pix_fmt_desc_get(s->out_fmt);
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for (i = 0; av_pix_fmt_desc_get(i); i++) {
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i);
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if (desc->comp[0].depth == s->outdesc->comp[0].depth &&
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av_pix_fmt_count_planes(i) == desc->nb_components)
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ff_add_format(&formats, i);
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}
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for (i = 0; i < s->nb_inputs; i++)
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ff_formats_ref(formats, &ctx->inputs[i]->out_formats);
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formats = NULL;
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ff_add_format(&formats, s->out_fmt);
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ff_formats_ref(formats, &ctx->outputs[0]->in_formats);
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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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MergePlanesContext *s = fs->opaque;
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AVFrame *in[4] = { NULL };
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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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for (i = 0; i < s->nb_planes; i++) {
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const int input = s->map[i][1];
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const int plane = s->map[i][0];
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av_image_copy_plane(out->data[i], out->linesize[i],
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in[input]->data[plane], in[input]->linesize[plane],
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s->planewidth[i], s->planeheight[i]);
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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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MergePlanesContext *s = ctx->priv;
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InputParam inputsp[4];
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FFFrameSyncIn *in;
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int i, ret;
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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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outlink->w = ctx->inputs[0]->w;
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outlink->h = ctx->inputs[0]->h;
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outlink->time_base = ctx->inputs[0]->time_base;
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outlink->frame_rate = ctx->inputs[0]->frame_rate;
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outlink->sample_aspect_ratio = ctx->inputs[0]->sample_aspect_ratio;
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s->planewidth[1] =
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s->planewidth[2] = FF_CEIL_RSHIFT(outlink->w, s->outdesc->log2_chroma_w);
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s->planewidth[0] =
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s->planewidth[3] = outlink->w;
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s->planeheight[1] =
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s->planeheight[2] = FF_CEIL_RSHIFT(outlink->h, s->outdesc->log2_chroma_h);
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s->planeheight[0] =
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s->planeheight[3] = outlink->h;
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for (i = 0; i < s->nb_inputs; i++) {
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InputParam *inputp = &inputsp[i];
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AVFilterLink *inlink = ctx->inputs[i];
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const AVPixFmtDescriptor *indesc = av_pix_fmt_desc_get(inlink->format);
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int j;
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if (outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num ||
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outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) {
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av_log(ctx, AV_LOG_ERROR, "input #%d link %s SAR %d:%d "
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"does not match output link %s SAR %d:%d\n",
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i, ctx->input_pads[i].name,
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inlink->sample_aspect_ratio.num,
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inlink->sample_aspect_ratio.den,
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ctx->output_pads[0].name,
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outlink->sample_aspect_ratio.num,
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outlink->sample_aspect_ratio.den);
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return AVERROR(EINVAL);
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}
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inputp->planewidth[1] =
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inputp->planewidth[2] = FF_CEIL_RSHIFT(inlink->w, indesc->log2_chroma_w);
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inputp->planewidth[0] =
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inputp->planewidth[3] = inlink->w;
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inputp->planeheight[1] =
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inputp->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, indesc->log2_chroma_h);
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inputp->planeheight[0] =
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inputp->planeheight[3] = inlink->h;
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inputp->nb_planes = av_pix_fmt_count_planes(inlink->format);
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for (j = 0; j < inputp->nb_planes; j++)
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inputp->depth[j] = indesc->comp[j].depth;
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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_STOP;
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}
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for (i = 0; i < s->nb_planes; i++) {
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const int input = s->map[i][1];
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const int plane = s->map[i][0];
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InputParam *inputp = &inputsp[input];
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if (plane + 1 > inputp->nb_planes) {
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av_log(ctx, AV_LOG_ERROR, "input %d does not have %d plane\n",
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input, plane);
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goto fail;
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}
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if (s->outdesc->comp[i].depth != inputp->depth[plane]) {
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av_log(ctx, AV_LOG_ERROR, "output plane %d depth %d does not "
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"match input %d plane %d depth %d\n",
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i, s->outdesc->comp[i].depth,
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input, plane, inputp->depth[plane]);
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goto fail;
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}
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if (s->planewidth[i] != inputp->planewidth[plane]) {
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av_log(ctx, AV_LOG_ERROR, "output plane %d width %d does not "
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"match input %d plane %d width %d\n",
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i, s->planewidth[i],
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input, plane, inputp->planewidth[plane]);
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goto fail;
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}
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if (s->planeheight[i] != inputp->planeheight[plane]) {
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av_log(ctx, AV_LOG_ERROR, "output plane %d height %d does not "
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"match input %d plane %d height %d\n",
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i, s->planeheight[i],
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input, plane, inputp->planeheight[plane]);
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goto fail;
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}
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}
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return ff_framesync_configure(&s->fs);
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fail:
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return AVERROR(EINVAL);
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}
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static int request_frame(AVFilterLink *outlink)
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{
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MergePlanesContext *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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MergePlanesContext *s = ctx->priv;
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int i;
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ff_framesync_uninit(&s->fs);
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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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}
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static const AVFilterPad mergeplanes_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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AVFilter ff_vf_mergeplanes = {
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.name = "mergeplanes",
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.description = NULL_IF_CONFIG_SMALL("Merge planes."),
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.priv_size = sizeof(MergePlanesContext),
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.priv_class = &mergeplanes_class,
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.init = init,
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.uninit = uninit,
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.query_formats = query_formats,
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.inputs = NULL,
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.outputs = mergeplanes_outputs,
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.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
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};
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