mirror of https://github.com/FFmpeg/FFmpeg.git
Paul B Mahol
3 years ago
parent
a6f136aef1
commit
767f66ea5d
6 changed files with 280 additions and 1 deletions
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/*
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* Copyright (c) 2022 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/imgutils.h" |
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#include "libavutil/pixdesc.h" |
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#include "libavutil/opt.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 "video.h" |
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#include "framesync.h" |
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typedef struct MultiplyContext { |
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const AVClass *class; |
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float offset; |
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float scale; |
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int planes; |
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int linesize[4]; |
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int nb_planes; |
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FFFrameSync fs; |
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} MultiplyContext; |
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#define OFFSET(x) offsetof(MultiplyContext, x) |
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM |
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typedef struct ThreadData { |
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AVFrame *src, *ref, *dst; |
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} ThreadData; |
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static const AVOption multiply_options[] = { |
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{ "scale", "set scale", OFFSET(scale), AV_OPT_TYPE_FLOAT, {.dbl=1}, 0., 9., FLAGS }, |
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{ "offset", "set offset", OFFSET(offset), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, -1., 1., FLAGS }, |
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{ "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=0xF}, 0., 0xF, FLAGS }, |
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{ NULL } |
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}; |
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static const enum AVPixelFormat pix_fmts[] = { |
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AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32, |
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AV_PIX_FMT_NONE |
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}; |
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static int config_input(AVFilterLink *inlink) |
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{ |
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AVFilterContext *ctx = inlink->dst; |
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MultiplyContext *s = ctx->priv; |
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int ret; |
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s->nb_planes = av_pix_fmt_count_planes(inlink->format); |
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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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return 0; |
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} |
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static void multiply(const uint8_t *ssrc, const uint8_t *rref, uint8_t *ddst, |
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float scale, float offset, int w) |
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{ |
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const float *src = (const float *)ssrc; |
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const float *ref = (const float *)rref; |
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float *dst = (float *)ddst; |
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for (int x = 0; x < w; x++) { |
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const float factor = (ref[x] + offset) * scale; |
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dst[x] = src[x] * factor; |
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} |
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} |
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static int multiply_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
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{ |
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MultiplyContext *s = ctx->priv; |
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const float offset = s->offset; |
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const float scale = s->scale; |
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ThreadData *td = arg; |
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for (int p = 0; p < s->nb_planes; p++) { |
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const ptrdiff_t src_linesize = td->src->linesize[p]; |
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const ptrdiff_t ref_linesize = td->ref->linesize[p]; |
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const ptrdiff_t dst_linesize = td->dst->linesize[p]; |
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const int w = td->src->width; |
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const int h = td->src->height; |
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const int slice_start = (h * jobnr) / nb_jobs; |
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const int slice_end = (h * (jobnr+1)) / nb_jobs; |
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const uint8_t *src = td->src->data[p] + slice_start * src_linesize; |
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const uint8_t *ref = td->ref->data[p] + slice_start * ref_linesize; |
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uint8_t *dst = td->dst->data[p] + slice_start * dst_linesize; |
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if (!((1 << p) & s->planes)) { |
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av_image_copy_plane(dst, dst_linesize, ref, ref_linesize, |
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s->linesize[p], slice_end - slice_start); |
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continue; |
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} |
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for (int y = slice_start; y < slice_end; y++) { |
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multiply(src, ref, dst, scale, offset, w); |
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dst += dst_linesize; |
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src += src_linesize; |
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ref += ref_linesize; |
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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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MultiplyContext *s = fs->opaque; |
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AVFilterLink *outlink = ctx->outputs[0]; |
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AVFrame *out, *src, *ref; |
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int ret; |
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if ((ret = ff_framesync_get_frame(&s->fs, 0, &src, 0)) < 0 || |
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(ret = ff_framesync_get_frame(&s->fs, 1, &ref, 0)) < 0) |
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return ret; |
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if (ctx->is_disabled) { |
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out = av_frame_clone(src); |
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if (!out) |
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return AVERROR(ENOMEM); |
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} else { |
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ThreadData td; |
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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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av_frame_copy_props(out, src); |
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td.src = src; |
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td.ref = ref; |
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td.dst = out; |
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ff_filter_execute(ctx, multiply_slice, &td, NULL, |
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FFMIN(outlink->h, ff_filter_get_nb_threads(ctx))); |
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} |
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out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base); |
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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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MultiplyContext *s = ctx->priv; |
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AVFilterLink *source = ctx->inputs[0]; |
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AVFilterLink *ref = ctx->inputs[1]; |
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FFFrameSyncIn *in; |
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int ret; |
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if (source->w != ref->w || source->h != ref->h) { |
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av_log(ctx, AV_LOG_ERROR, "First input link %s parameters " |
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"(size %dx%d) do not match the corresponding " |
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"second input link %s parameters (%dx%d)\n", |
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ctx->input_pads[0].name, source->w, source->h, |
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ctx->input_pads[1].name, ref->w, ref->h); |
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return AVERROR(EINVAL); |
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} |
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outlink->w = source->w; |
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outlink->h = source->h; |
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outlink->sample_aspect_ratio = source->sample_aspect_ratio; |
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outlink->frame_rate = source->frame_rate; |
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if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0) |
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return ret; |
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in = s->fs.in; |
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in[0].time_base = source->time_base; |
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in[1].time_base = ref->time_base; |
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in[0].sync = 1; |
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in[0].before = EXT_STOP; |
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in[0].after = EXT_INFINITY; |
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in[1].sync = 1; |
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in[1].before = EXT_STOP; |
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in[1].after = EXT_INFINITY; |
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s->fs.opaque = s; |
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s->fs.on_event = process_frame; |
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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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} |
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static int activate(AVFilterContext *ctx) |
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{ |
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MultiplyContext *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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MultiplyContext *s = ctx->priv; |
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ff_framesync_uninit(&s->fs); |
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} |
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static const AVFilterPad multiply_inputs[] = { |
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{ |
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.name = "source", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.config_props = config_input, |
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}, |
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{ |
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.name = "factor", |
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.type = AVMEDIA_TYPE_VIDEO, |
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}, |
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}; |
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static const AVFilterPad multiply_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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AVFILTER_DEFINE_CLASS(multiply); |
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const AVFilter ff_vf_multiply = { |
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.name = "multiply", |
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.description = NULL_IF_CONFIG_SMALL("Multiply first video stream with second video stream."), |
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.priv_class = &multiply_class, |
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.priv_size = sizeof(MultiplyContext), |
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.uninit = uninit, |
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.activate = activate, |
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FILTER_INPUTS(multiply_inputs), |
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FILTER_OUTPUTS(multiply_outputs), |
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FILTER_PIXFMTS_ARRAY(pix_fmts), |
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS, |
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.process_command = ff_filter_process_command, |
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}; |
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