238 lines
9.4 KiB
C
238 lines
9.4 KiB
C
/*
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* BobWeaver Deinterlacing Filter
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* Copyright (C) 2016 Thomas Mundt <loudmax@yahoo.de>
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*
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* Based on YADIF (Yet Another Deinterlacing Filter)
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* Copyright (C) 2006-2011 Michael Niedermayer <michaelni@gmx.at>
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* 2010 James Darnley <james.darnley@gmail.com>
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*
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* With use of Weston 3 Field Deinterlacing Filter algorithm
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* Copyright (C) 2012 British Broadcasting Corporation, All Rights Reserved
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* Author of de-interlace algorithm: Jim Easterbrook for BBC R&D
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* Based on the process described by Martin Weston for BBC R&D
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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/common.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 "bwdifdsp.h"
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#include "ccfifo.h"
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#include "internal.h"
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#include "yadif.h"
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typedef struct BWDIFContext {
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YADIFContext yadif;
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BWDIFDSPContext dsp;
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} BWDIFContext;
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typedef struct ThreadData {
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AVFrame *frame;
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int plane;
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int w, h;
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int parity;
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int tff;
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} ThreadData;
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// Round job start line down to multiple of 4 so that if filter_line3 exists
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// and the frame is a multiple of 4 high then filter_line will never be called
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static inline int job_start(const int jobnr, const int nb_jobs, const int h)
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{
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return jobnr >= nb_jobs ? h : ((h * jobnr) / nb_jobs) & ~3;
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}
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static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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BWDIFContext *s = ctx->priv;
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YADIFContext *yadif = &s->yadif;
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ThreadData *td = arg;
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int linesize = yadif->cur->linesize[td->plane];
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int clip_max = (1 << (yadif->csp->comp[td->plane].depth)) - 1;
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int df = (yadif->csp->comp[td->plane].depth + 7) / 8;
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int refs = linesize / df;
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int slice_start = job_start(jobnr, nb_jobs, td->h);
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int slice_end = job_start(jobnr + 1, nb_jobs, td->h);
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int y;
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for (y = slice_start; y < slice_end; y++) {
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if ((y ^ td->parity) & 1) {
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uint8_t *prev = &yadif->prev->data[td->plane][y * linesize];
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uint8_t *cur = &yadif->cur ->data[td->plane][y * linesize];
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uint8_t *next = &yadif->next->data[td->plane][y * linesize];
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uint8_t *dst = &td->frame->data[td->plane][y * td->frame->linesize[td->plane]];
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if (yadif->current_field == YADIF_FIELD_END) {
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s->dsp.filter_intra(dst, cur, td->w, (y + df) < td->h ? refs : -refs,
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y > (df - 1) ? -refs : refs,
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(y + 3*df) < td->h ? 3 * refs : -refs,
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y > (3*df - 1) ? -3 * refs : refs,
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td->parity ^ td->tff, clip_max);
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} else if ((y < 4) || ((y + 5) > td->h)) {
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s->dsp.filter_edge(dst, prev, cur, next, td->w,
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(y + df) < td->h ? refs : -refs,
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y > (df - 1) ? -refs : refs,
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refs << 1, -(refs << 1),
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td->parity ^ td->tff, clip_max,
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(y < 2) || ((y + 3) > td->h) ? 0 : 1);
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} else if (s->dsp.filter_line3 && y + 2 < slice_end && y + 6 < td->h) {
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s->dsp.filter_line3(dst, td->frame->linesize[td->plane],
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prev, cur, next, linesize, td->w,
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td->parity ^ td->tff, clip_max);
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y += 2;
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} else {
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s->dsp.filter_line(dst, prev, cur, next, td->w,
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refs, -refs, refs << 1, -(refs << 1),
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3 * refs, -3 * refs, refs << 2, -(refs << 2),
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td->parity ^ td->tff, clip_max);
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}
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} else {
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memcpy(&td->frame->data[td->plane][y * td->frame->linesize[td->plane]],
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&yadif->cur->data[td->plane][y * linesize], td->w * df);
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}
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}
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return 0;
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}
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static void filter(AVFilterContext *ctx, AVFrame *dstpic,
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int parity, int tff)
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{
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BWDIFContext *bwdif = ctx->priv;
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YADIFContext *yadif = &bwdif->yadif;
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ThreadData td = { .frame = dstpic, .parity = parity, .tff = tff };
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int i;
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for (i = 0; i < yadif->csp->nb_components; i++) {
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int w = dstpic->width;
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int h = dstpic->height;
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if (i == 1 || i == 2) {
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w = AV_CEIL_RSHIFT(w, yadif->csp->log2_chroma_w);
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h = AV_CEIL_RSHIFT(h, yadif->csp->log2_chroma_h);
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}
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td.w = w;
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td.h = h;
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td.plane = i;
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ff_filter_execute(ctx, filter_slice, &td, NULL,
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FFMIN((h+3)/4, ff_filter_get_nb_threads(ctx)));
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}
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if (yadif->current_field == YADIF_FIELD_END) {
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yadif->current_field = YADIF_FIELD_NORMAL;
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}
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}
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
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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,
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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_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
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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_GBRAP16,
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_NONE
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};
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static int config_props(AVFilterLink *link)
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{
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AVFilterContext *ctx = link->src;
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BWDIFContext *s = link->src->priv;
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YADIFContext *yadif = &s->yadif;
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int ret;
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ret = ff_yadif_config_output_common(link);
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if (ret < 0)
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return AVERROR(EINVAL);
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yadif->csp = av_pix_fmt_desc_get(link->format);
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yadif->filter = filter;
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if (AV_CEIL_RSHIFT(link->w, yadif->csp->log2_chroma_w) < 3 || AV_CEIL_RSHIFT(link->h, yadif->csp->log2_chroma_h) < 4) {
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av_log(ctx, AV_LOG_ERROR, "Video with planes less than 3 columns or 4 lines is not supported\n");
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return AVERROR(EINVAL);
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}
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ff_bwdif_init_filter_line(&s->dsp, yadif->csp->comp[0].depth);
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return 0;
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}
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#define OFFSET(x) offsetof(YADIFContext, x)
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
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#define CONST(name, help, val, u) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, .unit = u }
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static const AVOption bwdif_options[] = {
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{ "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FIELD}, 0, 1, FLAGS, .unit = "mode"},
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CONST("send_frame", "send one frame for each frame", YADIF_MODE_SEND_FRAME, "mode"),
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CONST("send_field", "send one frame for each field", YADIF_MODE_SEND_FIELD, "mode"),
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{ "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1, FLAGS, .unit = "parity" },
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CONST("tff", "assume top field first", YADIF_PARITY_TFF, "parity"),
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CONST("bff", "assume bottom field first", YADIF_PARITY_BFF, "parity"),
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CONST("auto", "auto detect parity", YADIF_PARITY_AUTO, "parity"),
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{ "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, .unit = "deint" },
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CONST("all", "deinterlace all frames", YADIF_DEINT_ALL, "deint"),
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CONST("interlaced", "only deinterlace frames marked as interlaced", YADIF_DEINT_INTERLACED, "deint"),
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(bwdif);
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static const AVFilterPad avfilter_vf_bwdif_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = ff_yadif_filter_frame,
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},
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};
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static const AVFilterPad avfilter_vf_bwdif_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.request_frame = ff_yadif_request_frame,
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.config_props = config_props,
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},
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};
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const AVFilter ff_vf_bwdif = {
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.name = "bwdif",
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.description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."),
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.priv_size = sizeof(BWDIFContext),
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.priv_class = &bwdif_class,
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.uninit = ff_yadif_uninit,
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FILTER_INPUTS(avfilter_vf_bwdif_inputs),
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FILTER_OUTPUTS(avfilter_vf_bwdif_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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};
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