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b4f5201967
If one looks at the many query_formats callbacks in existence, one will immediately recognize that there is one type of default callback for video and a slightly different default callback for audio: It is "return ff_set_common_formats_from_list(ctx, pix_fmts);" for video with a filter-specific pix_fmts list. For audio, it is the same with a filter-specific sample_fmts list together with ff_set_common_all_samplerates() and ff_set_common_all_channel_counts(). This commit allows to remove the boilerplate query_formats callbacks by replacing said callback with a union consisting the old callback and pointers for pixel and sample format arrays. For the not uncommon case in which these lists only contain a single entry (besides the sentinel) enum AVPixelFormat and enum AVSampleFormat fields are also added to the union to store them directly in the AVFilter, thereby avoiding a relocation. The state of said union will be contained in a new, dedicated AVFilter field (the nb_inputs and nb_outputs fields have been shrunk to uint8_t in order to create a hole for this new field; this is no problem, as the maximum of all the nb_inputs is four; for nb_outputs it is only two). The state's default value coincides with the earlier default of query_formats being unset, namely that the filter accepts all formats (and also sample rates and channel counts/layouts for audio) provided that these properties agree coincide for all inputs and outputs. By using different union members for audio and video filters the type-unsafety of using the same functions for audio and video lists will furthermore be more confined to formats.c than before. When the new fields are used, they will also avoid allocations: Currently something nearly equivalent to ff_default_query_formats() is called after every successful call to a query_formats callback; yet in the common case that the newly allocated AVFilterFormats are not used at all (namely if there are no free links) these newly allocated AVFilterFormats are freed again without ever being used. Filters no longer using the callback will not exhibit this any more. Reviewed-by: Paul B Mahol <onemda@gmail.com> Reviewed-by: Nicolas George <george@nsup.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
305 lines
10 KiB
C
305 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 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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if ((ret = ff_append_inpad_free_name(ctx, &pad)) < 0)
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return ret;
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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, ret;
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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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(desc->comp[0].depth <= 8 || (desc->flags & AV_PIX_FMT_FLAG_BE) == (s->outdesc->flags & AV_PIX_FMT_FLAG_BE)) &&
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av_pix_fmt_count_planes(i) == desc->nb_components &&
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(ret = ff_add_format(&formats, i)) < 0)
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return ret;
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}
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for (i = 0; i < s->nb_inputs; i++)
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if ((ret = ff_formats_ref(formats, &ctx->inputs[i]->outcfg.formats)) < 0)
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return ret;
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formats = NULL;
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if ((ret = ff_add_format(&formats, s->out_fmt)) < 0 ||
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(ret = ff_formats_ref(formats, &ctx->outputs[0]->incfg.formats)) < 0)
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return ret;
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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] = AV_CEIL_RSHIFT(((s->outdesc->comp[1].depth > 8) + 1) * outlink->w, s->outdesc->log2_chroma_w);
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s->planewidth[0] =
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s->planewidth[3] = ((s->outdesc->comp[0].depth > 8) + 1) * outlink->w;
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s->planeheight[1] =
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s->planeheight[2] = AV_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] = AV_CEIL_RSHIFT(((indesc->comp[1].depth > 8) + 1) * inlink->w, indesc->log2_chroma_w);
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inputp->planewidth[0] =
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inputp->planewidth[3] = ((indesc->comp[0].depth > 8) + 1) * inlink->w;
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inputp->planeheight[1] =
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inputp->planeheight[2] = AV_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 activate(AVFilterContext *ctx)
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{
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MergePlanesContext *s = ctx->priv;
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return ff_framesync_activate(&s->fs);
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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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ff_framesync_uninit(&s->fs);
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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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},
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};
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const 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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.activate = activate,
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.inputs = NULL,
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FILTER_OUTPUTS(mergeplanes_outputs),
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FILTER_QUERY_FUNC(query_formats),
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.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
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};
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