419 lines
14 KiB
C
419 lines
14 KiB
C
/*
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* Copyright (c) 2017 Paul B Mahol
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/imgutils.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "libavcodec/avfft.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "framesync.h"
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#include "internal.h"
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#include "video.h"
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typedef struct ConvolveContext {
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const AVClass *class;
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FFFrameSync fs;
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FFTContext *fft[4];
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FFTContext *ifft[4];
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int fft_bits[4];
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int fft_len[4];
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int planewidth[4];
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int planeheight[4];
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FFTComplex *fft_hdata[4];
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FFTComplex *fft_vdata[4];
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FFTComplex *fft_hdata_impulse[4];
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FFTComplex *fft_vdata_impulse[4];
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int depth;
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int planes;
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int impulse;
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int nb_planes;
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int got_impulse[4];
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} ConvolveContext;
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#define OFFSET(x) offsetof(ConvolveContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption convolve_options[] = {
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{ "planes", "set planes to convolve", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=7}, 0, 15, FLAGS },
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{ "impulse", "when to process impulses", OFFSET(impulse), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "impulse" },
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{ "first", "process only first impulse, ignore rest", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "impulse" },
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{ "all", "process all impulses", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "impulse" },
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{ NULL },
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};
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FRAMESYNC_DEFINE_CLASS(convolve, ConvolveContext, fs);
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum AVPixelFormat pixel_fmts_fftfilt[] = {
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AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
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AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
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AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
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AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
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AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
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AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
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AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
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AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
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AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
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AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
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AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_NONE
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};
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AVFilterFormats *fmts_list = ff_make_format_list(pixel_fmts_fftfilt);
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if (!fmts_list)
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return AVERROR(ENOMEM);
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return ff_set_common_formats(ctx, fmts_list);
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}
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static int config_input_main(AVFilterLink *inlink)
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{
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ConvolveContext *s = inlink->dst->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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int fft_bits, i;
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s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
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s->planewidth[0] = s->planewidth[3] = inlink->w;
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s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
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s->planeheight[0] = s->planeheight[3] = inlink->h;
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s->nb_planes = desc->nb_components;
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s->depth = desc->comp[0].depth;
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for (i = 0; i < s->nb_planes; i++) {
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int w = s->planewidth[i];
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int h = s->planeheight[i];
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int n = FFMAX(w, h) * 10/9;
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for (fft_bits = 1; 1 << fft_bits < n; fft_bits++);
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s->fft_bits[i] = fft_bits;
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s->fft_len[i] = 1 << s->fft_bits[i];
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if (!(s->fft_hdata[i] = av_calloc(s->fft_len[i], s->fft_len[i] * sizeof(FFTComplex))))
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return AVERROR(ENOMEM);
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if (!(s->fft_vdata[i] = av_calloc(s->fft_len[i], s->fft_len[i] * sizeof(FFTComplex))))
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return AVERROR(ENOMEM);
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if (!(s->fft_hdata_impulse[i] = av_calloc(s->fft_len[i], s->fft_len[i] * sizeof(FFTComplex))))
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return AVERROR(ENOMEM);
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if (!(s->fft_vdata_impulse[i] = av_calloc(s->fft_len[i], s->fft_len[i] * sizeof(FFTComplex))))
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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static int config_input_impulse(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->dst;
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if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
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ctx->inputs[0]->h != ctx->inputs[1]->h) {
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av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
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return AVERROR(EINVAL);
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}
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if (ctx->inputs[0]->format != ctx->inputs[1]->format) {
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av_log(ctx, AV_LOG_ERROR, "Inputs must be of same pixel format.\n");
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return AVERROR(EINVAL);
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}
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return 0;
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}
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static void fft_horizontal(ConvolveContext *s, FFTComplex *fft_hdata,
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AVFrame *in, int w, int h, int n, int plane, float scale)
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{
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int y, x;
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for (y = 0; y < h; y++) {
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if (s->depth == 8) {
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const uint8_t *src = in->data[plane] + in->linesize[plane] * y;
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for (x = 0; x < w; x++) {
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fft_hdata[y * n + x].re = src[x] * scale;
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fft_hdata[y * n + x].im = 0;
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}
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} else {
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const uint16_t *src = (const uint16_t *)(in->data[plane] + in->linesize[plane] * y);
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for (x = 0; x < w; x++) {
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fft_hdata[y * n + x].re = src[x] * scale;
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fft_hdata[y * n + x].im = 0;
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}
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}
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for (; x < n; x++) {
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fft_hdata[y * n + x].re = 0;
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fft_hdata[y * n + x].im = 0;
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}
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}
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for (; y < n; y++) {
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for (x = 0; x < n; x++) {
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fft_hdata[y * n + x].re = 0;
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fft_hdata[y * n + x].im = 0;
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}
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}
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for (y = 0; y < n; y++) {
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av_fft_permute(s->fft[plane], fft_hdata + y * n);
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av_fft_calc(s->fft[plane], fft_hdata + y * n);
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}
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}
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static void fft_vertical(ConvolveContext *s, FFTComplex *fft_hdata, FFTComplex *fft_vdata,
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int n, int plane)
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{
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int y, x;
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for (y = 0; y < n; y++) {
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for (x = 0; x < n; x++) {
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fft_vdata[y * n + x].re = fft_hdata[x * n + y].re;
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fft_vdata[y * n + x].im = fft_hdata[x * n + y].im;
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}
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for (; x < n; x++) {
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fft_vdata[y * n + x].re = 0;
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fft_vdata[y * n + x].im = 0;
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}
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av_fft_permute(s->fft[plane], fft_vdata + y * n);
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av_fft_calc(s->fft[plane], fft_vdata + y * n);
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}
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}
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static void ifft_vertical(ConvolveContext *s, int n, int plane)
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{
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int y, x;
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for (y = 0; y < n; y++) {
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av_fft_permute(s->ifft[plane], s->fft_vdata[plane] + y * n);
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av_fft_calc(s->ifft[plane], s->fft_vdata[plane] + y * n);
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for (x = 0; x < n; x++) {
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s->fft_hdata[plane][x * n + y].re = s->fft_vdata[plane][y * n + x].re;
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s->fft_hdata[plane][x * n + y].im = s->fft_vdata[plane][y * n + x].im;
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}
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}
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}
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static void ifft_horizontal(ConvolveContext *s, AVFrame *out,
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int w, int h, int n, int plane)
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{
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const float scale = 1.f / (n * n);
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const int max = (1 << s->depth) - 1;
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const int oh = h / 2;
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const int ow = w / 2;
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int y, x;
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for (y = 0; y < n; y++) {
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av_fft_permute(s->ifft[plane], s->fft_hdata[plane] + y * n);
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av_fft_calc(s->ifft[plane], s->fft_hdata[plane] + y * n);
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}
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if (s->depth == 8) {
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for (y = 0; y < h; y++) {
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uint8_t *dst = out->data[plane] + y * out->linesize[plane];
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for (x = 0; x < w; x++)
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dst[x] = av_clip_uint8(s->fft_hdata[plane][(y+oh) * n + x+ow].re * scale);
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}
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} else {
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for (y = 0; y < h; y++) {
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uint16_t *dst = (uint16_t *)(out->data[plane] + y * out->linesize[plane]);
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for (x = 0; x < w; x++)
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dst[x] = av_clip(s->fft_hdata[plane][(y+oh) * n + x+ow].re * scale, 0, max);
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}
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}
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}
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static int do_convolve(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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ConvolveContext *s = ctx->priv;
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AVFrame *mainpic = NULL, *impulsepic = NULL;
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int ret, y, x, plane;
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ret = ff_framesync_dualinput_get(fs, &mainpic, &impulsepic);
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if (ret < 0)
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return ret;
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if (!impulsepic)
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return ff_filter_frame(outlink, mainpic);
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for (plane = 0; plane < s->nb_planes; plane++) {
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const int n = s->fft_len[plane];
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const int w = s->planewidth[plane];
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const int h = s->planeheight[plane];
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float total = 0;
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if (!(s->planes & (1 << plane))) {
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continue;
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}
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fft_horizontal(s, s->fft_hdata[plane], mainpic, w, h, n, plane, 1.f);
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fft_vertical(s, s->fft_hdata[plane], s->fft_vdata[plane],
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n, plane);
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if ((!s->impulse && !s->got_impulse[plane]) || s->impulse) {
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if (s->depth == 8) {
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for (y = 0; y < h; y++) {
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const uint8_t *src = (const uint8_t *)(impulsepic->data[plane] + y * impulsepic->linesize[plane]) ;
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for (x = 0; x < w; x++) {
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total += src[x];
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}
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}
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} else {
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for (y = 0; y < h; y++) {
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const uint16_t *src = (const uint16_t *)(impulsepic->data[plane] + y * impulsepic->linesize[plane]) ;
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for (x = 0; x < w; x++) {
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total += src[x];
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}
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}
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}
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total = FFMAX(1, total);
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fft_horizontal(s, s->fft_hdata_impulse[plane], impulsepic, w, h, n, plane, 1 / total);
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fft_vertical(s, s->fft_hdata_impulse[plane], s->fft_vdata_impulse[plane],
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n, plane);
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s->got_impulse[plane] = 1;
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}
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for (y = 0; y < n; y++) {
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for (x = 0; x < n; x++) {
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FFTSample re, im, ire, iim;
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re = s->fft_vdata[plane][y*n + x].re;
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im = s->fft_vdata[plane][y*n + x].im;
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ire = s->fft_vdata_impulse[plane][y*n + x].re;
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iim = s->fft_vdata_impulse[plane][y*n + x].im;
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s->fft_vdata[plane][y*n + x].re = ire * re - iim * im;
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s->fft_vdata[plane][y*n + x].im = iim * re + ire * im;
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}
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}
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ifft_vertical(s, n, plane);
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ifft_horizontal(s, mainpic, w, h, n, plane);
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}
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return ff_filter_frame(outlink, mainpic);
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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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ConvolveContext *s = ctx->priv;
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AVFilterLink *mainlink = ctx->inputs[0];
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int ret, i;
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s->fs.on_event = do_convolve;
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ret = ff_framesync_init_dualinput(&s->fs, ctx);
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if (ret < 0)
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return ret;
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outlink->w = mainlink->w;
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outlink->h = mainlink->h;
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outlink->time_base = mainlink->time_base;
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outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
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outlink->frame_rate = mainlink->frame_rate;
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if ((ret = ff_framesync_configure(&s->fs)) < 0)
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return ret;
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for (i = 0; i < s->nb_planes; i++) {
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s->fft[i] = av_fft_init(s->fft_bits[i], 0);
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s->ifft[i] = av_fft_init(s->fft_bits[i], 1);
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if (!s->fft[i] || !s->ifft[i])
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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static int activate(AVFilterContext *ctx)
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{
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ConvolveContext *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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ConvolveContext *s = ctx->priv;
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int i;
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for (i = 0; i < 4; i++) {
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av_freep(&s->fft_hdata[i]);
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av_freep(&s->fft_vdata[i]);
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av_freep(&s->fft_hdata_impulse[i]);
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av_freep(&s->fft_vdata_impulse[i]);
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av_fft_end(s->fft[i]);
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av_fft_end(s->ifft[i]);
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}
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ff_framesync_uninit(&s->fs);
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}
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static const AVFilterPad convolve_inputs[] = {
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{
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.name = "main",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = config_input_main,
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},{
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.name = "impulse",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = config_input_impulse,
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},
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{ NULL }
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};
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static const AVFilterPad convolve_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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{ NULL }
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};
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AVFilter ff_vf_convolve = {
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.name = "convolve",
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.description = NULL_IF_CONFIG_SMALL("Convolve first video stream with second video stream."),
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.preinit = convolve_framesync_preinit,
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.uninit = uninit,
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.query_formats = query_formats,
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.activate = activate,
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.priv_size = sizeof(ConvolveContext),
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.priv_class = &convolve_class,
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.inputs = convolve_inputs,
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.outputs = convolve_outputs,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
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};
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