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FFmpeg/libavfilter/vf_bwdif.c
Andreas Rheinhardt 40e6575aa3 all: Replace if (ARCH_FOO) checks by #if ARCH_FOO 
This is more spec-compliant because it does not rely
on dead-code elimination by the compiler. Especially
MSVC has problems with this, as can be seen in
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/296373.html
or
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/297022.html

This commit does not eliminate every instance where we rely
on dead code elimination: It only tackles branching to
the initialization of arch-specific dsp code, not e.g. all
uses of CONFIG_ and HAVE_ checks. But maybe it is already
enough to compile FFmpeg with MSVC with whole-programm-optimizations
enabled (if one does not disable too many components).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-06-15 04:56:37 +02:00

413 lines
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/*
* BobWeaver Deinterlacing Filter
* Copyright (C) 2016 Thomas Mundt <loudmax@yahoo.de>
*
* Based on YADIF (Yet Another Deinterlacing Filter)
* Copyright (C) 2006-2011 Michael Niedermayer <michaelni@gmx.at>
* 2010 James Darnley <james.darnley@gmail.com>
*
* With use of Weston 3 Field Deinterlacing Filter algorithm
* Copyright (C) 2012 British Broadcasting Corporation, All Rights Reserved
* Author of de-interlace algorithm: Jim Easterbrook for BBC R&D
* Based on the process described by Martin Weston for BBC R&D
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
#include "bwdif.h"
/*
* Filter coefficients coef_lf and coef_hf taken from BBC PH-2071 (Weston 3 Field Deinterlacer).
* Used when there is spatial and temporal interpolation.
* Filter coefficients coef_sp are used when there is spatial interpolation only.
* Adjusted for matching visual sharpness impression of spatial and temporal interpolation.
*/
static const uint16_t coef_lf[2] = { 4309, 213 };
static const uint16_t coef_hf[3] = { 5570, 3801, 1016 };
static const uint16_t coef_sp[2] = { 5077, 981 };
typedef struct ThreadData {
AVFrame *frame;
int plane;
int w, h;
int parity;
int tff;
} ThreadData;
#define FILTER_INTRA() \
for (x = 0; x < w; x++) { \
interpol = (coef_sp[0] * (cur[mrefs] + cur[prefs]) - coef_sp[1] * (cur[mrefs3] + cur[prefs3])) >> 13; \
dst[0] = av_clip(interpol, 0, clip_max); \
\
dst++; \
cur++; \
}
#define FILTER1() \
for (x = 0; x < w; x++) { \
int c = cur[mrefs]; \
int d = (prev2[0] + next2[0]) >> 1; \
int e = cur[prefs]; \
int temporal_diff0 = FFABS(prev2[0] - next2[0]); \
int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e)) >> 1; \
int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e)) >> 1; \
int diff = FFMAX3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2); \
\
if (!diff) { \
dst[0] = d; \
} else {
#define SPAT_CHECK() \
int b = ((prev2[mrefs2] + next2[mrefs2]) >> 1) - c; \
int f = ((prev2[prefs2] + next2[prefs2]) >> 1) - e; \
int dc = d - c; \
int de = d - e; \
int max = FFMAX3(de, dc, FFMIN(b, f)); \
int min = FFMIN3(de, dc, FFMAX(b, f)); \
diff = FFMAX3(diff, min, -max);
#define FILTER_LINE() \
SPAT_CHECK() \
if (FFABS(c - e) > temporal_diff0) { \
interpol = (((coef_hf[0] * (prev2[0] + next2[0]) \
- coef_hf[1] * (prev2[mrefs2] + next2[mrefs2] + prev2[prefs2] + next2[prefs2]) \
+ coef_hf[2] * (prev2[mrefs4] + next2[mrefs4] + prev2[prefs4] + next2[prefs4])) >> 2) \
+ coef_lf[0] * (c + e) - coef_lf[1] * (cur[mrefs3] + cur[prefs3])) >> 13; \
} else { \
interpol = (coef_sp[0] * (c + e) - coef_sp[1] * (cur[mrefs3] + cur[prefs3])) >> 13; \
}
#define FILTER_EDGE() \
if (spat) { \
SPAT_CHECK() \
} \
interpol = (c + e) >> 1;
#define FILTER2() \
if (interpol > d + diff) \
interpol = d + diff; \
else if (interpol < d - diff) \
interpol = d - diff; \
\
dst[0] = av_clip(interpol, 0, clip_max); \
} \
\
dst++; \
cur++; \
prev++; \
next++; \
prev2++; \
next2++; \
}
static void filter_intra(void *dst1, void *cur1, int w, int prefs, int mrefs,
int prefs3, int mrefs3, int parity, int clip_max)
{
uint8_t *dst = dst1;
uint8_t *cur = cur1;
int interpol, x;
FILTER_INTRA()
}
static void filter_line_c(void *dst1, void *prev1, void *cur1, void *next1,
int w, int prefs, int mrefs, int prefs2, int mrefs2,
int prefs3, int mrefs3, int prefs4, int mrefs4,
int parity, int clip_max)
{
uint8_t *dst = dst1;
uint8_t *prev = prev1;
uint8_t *cur = cur1;
uint8_t *next = next1;
uint8_t *prev2 = parity ? prev : cur ;
uint8_t *next2 = parity ? cur : next;
int interpol, x;
FILTER1()
FILTER_LINE()
FILTER2()
}
static void filter_edge(void *dst1, void *prev1, void *cur1, void *next1,
int w, int prefs, int mrefs, int prefs2, int mrefs2,
int parity, int clip_max, int spat)
{
uint8_t *dst = dst1;
uint8_t *prev = prev1;
uint8_t *cur = cur1;
uint8_t *next = next1;
uint8_t *prev2 = parity ? prev : cur ;
uint8_t *next2 = parity ? cur : next;
int interpol, x;
FILTER1()
FILTER_EDGE()
FILTER2()
}
static void filter_intra_16bit(void *dst1, void *cur1, int w, int prefs, int mrefs,
int prefs3, int mrefs3, int parity, int clip_max)
{
uint16_t *dst = dst1;
uint16_t *cur = cur1;
int interpol, x;
FILTER_INTRA()
}
static void filter_line_c_16bit(void *dst1, void *prev1, void *cur1, void *next1,
int w, int prefs, int mrefs, int prefs2, int mrefs2,
int prefs3, int mrefs3, int prefs4, int mrefs4,
int parity, int clip_max)
{
uint16_t *dst = dst1;
uint16_t *prev = prev1;
uint16_t *cur = cur1;
uint16_t *next = next1;
uint16_t *prev2 = parity ? prev : cur ;
uint16_t *next2 = parity ? cur : next;
int interpol, x;
FILTER1()
FILTER_LINE()
FILTER2()
}
static void filter_edge_16bit(void *dst1, void *prev1, void *cur1, void *next1,
int w, int prefs, int mrefs, int prefs2, int mrefs2,
int parity, int clip_max, int spat)
{
uint16_t *dst = dst1;
uint16_t *prev = prev1;
uint16_t *cur = cur1;
uint16_t *next = next1;
uint16_t *prev2 = parity ? prev : cur ;
uint16_t *next2 = parity ? cur : next;
int interpol, x;
FILTER1()
FILTER_EDGE()
FILTER2()
}
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
BWDIFContext *s = ctx->priv;
YADIFContext *yadif = &s->yadif;
ThreadData *td = arg;
int linesize = yadif->cur->linesize[td->plane];
int clip_max = (1 << (yadif->csp->comp[td->plane].depth)) - 1;
int df = (yadif->csp->comp[td->plane].depth + 7) / 8;
int refs = linesize / df;
int slice_start = (td->h * jobnr ) / nb_jobs;
int slice_end = (td->h * (jobnr+1)) / nb_jobs;
int y;
for (y = slice_start; y < slice_end; y++) {
if ((y ^ td->parity) & 1) {
uint8_t *prev = &yadif->prev->data[td->plane][y * linesize];
uint8_t *cur = &yadif->cur ->data[td->plane][y * linesize];
uint8_t *next = &yadif->next->data[td->plane][y * linesize];
uint8_t *dst = &td->frame->data[td->plane][y * td->frame->linesize[td->plane]];
if (yadif->current_field == YADIF_FIELD_END) {
s->filter_intra(dst, cur, td->w, (y + df) < td->h ? refs : -refs,
y > (df - 1) ? -refs : refs,
(y + 3*df) < td->h ? 3 * refs : -refs,
y > (3*df - 1) ? -3 * refs : refs,
td->parity ^ td->tff, clip_max);
} else if ((y < 4) || ((y + 5) > td->h)) {
s->filter_edge(dst, prev, cur, next, td->w,
(y + df) < td->h ? refs : -refs,
y > (df - 1) ? -refs : refs,
refs << 1, -(refs << 1),
td->parity ^ td->tff, clip_max,
(y < 2) || ((y + 3) > td->h) ? 0 : 1);
} else {
s->filter_line(dst, prev, cur, next, td->w,
refs, -refs, refs << 1, -(refs << 1),
3 * refs, -3 * refs, refs << 2, -(refs << 2),
td->parity ^ td->tff, clip_max);
}
} else {
memcpy(&td->frame->data[td->plane][y * td->frame->linesize[td->plane]],
&yadif->cur->data[td->plane][y * linesize], td->w * df);
}
}
return 0;
}
static void filter(AVFilterContext *ctx, AVFrame *dstpic,
int parity, int tff)
{
BWDIFContext *bwdif = ctx->priv;
YADIFContext *yadif = &bwdif->yadif;
ThreadData td = { .frame = dstpic, .parity = parity, .tff = tff };
int i;
for (i = 0; i < yadif->csp->nb_components; i++) {
int w = dstpic->width;
int h = dstpic->height;
if (i == 1 || i == 2) {
w = AV_CEIL_RSHIFT(w, yadif->csp->log2_chroma_w);
h = AV_CEIL_RSHIFT(h, yadif->csp->log2_chroma_h);
}
td.w = w;
td.h = h;
td.plane = i;
ff_filter_execute(ctx, filter_slice, &td, NULL,
FFMIN(h, ff_filter_get_nb_threads(ctx)));
}
if (yadif->current_field == YADIF_FIELD_END) {
yadif->current_field = YADIF_FIELD_NORMAL;
}
emms_c();
}
static av_cold void uninit(AVFilterContext *ctx)
{
BWDIFContext *bwdif = ctx->priv;
YADIFContext *yadif = &bwdif->yadif;
av_frame_free(&yadif->prev);
av_frame_free(&yadif->cur );
av_frame_free(&yadif->next);
}
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P,
AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
AV_PIX_FMT_NONE
};
static int config_props(AVFilterLink *link)
{
AVFilterContext *ctx = link->src;
BWDIFContext *s = link->src->priv;
YADIFContext *yadif = &s->yadif;
link->time_base = av_mul_q(ctx->inputs[0]->time_base, (AVRational){1, 2});
link->w = link->src->inputs[0]->w;
link->h = link->src->inputs[0]->h;
if(yadif->mode&1)
link->frame_rate = av_mul_q(link->src->inputs[0]->frame_rate, (AVRational){2,1});
if (link->w < 3 || link->h < 4) {
av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or 4 lines is not supported\n");
return AVERROR(EINVAL);
}
yadif->csp = av_pix_fmt_desc_get(link->format);
yadif->filter = filter;
if (yadif->csp->comp[0].depth > 8) {
s->filter_intra = filter_intra_16bit;
s->filter_line = filter_line_c_16bit;
s->filter_edge = filter_edge_16bit;
} else {
s->filter_intra = filter_intra;
s->filter_line = filter_line_c;
s->filter_edge = filter_edge;
}
#if ARCH_X86
ff_bwdif_init_x86(s);
#endif
return 0;
}
#define OFFSET(x) offsetof(YADIFContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
#define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, unit }
static const AVOption bwdif_options[] = {
{ "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FIELD}, 0, 1, FLAGS, "mode"},
CONST("send_frame", "send one frame for each frame", YADIF_MODE_SEND_FRAME, "mode"),
CONST("send_field", "send one frame for each field", YADIF_MODE_SEND_FIELD, "mode"),
{ "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1, FLAGS, "parity" },
CONST("tff", "assume top field first", YADIF_PARITY_TFF, "parity"),
CONST("bff", "assume bottom field first", YADIF_PARITY_BFF, "parity"),
CONST("auto", "auto detect parity", YADIF_PARITY_AUTO, "parity"),
{ "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, "deint" },
CONST("all", "deinterlace all frames", YADIF_DEINT_ALL, "deint"),
CONST("interlaced", "only deinterlace frames marked as interlaced", YADIF_DEINT_INTERLACED, "deint"),
{ NULL }
};
AVFILTER_DEFINE_CLASS(bwdif);
static const AVFilterPad avfilter_vf_bwdif_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = ff_yadif_filter_frame,
},
};
static const AVFilterPad avfilter_vf_bwdif_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.request_frame = ff_yadif_request_frame,
.config_props = config_props,
},
};
const AVFilter ff_vf_bwdif = {
.name = "bwdif",
.description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."),
.priv_size = sizeof(BWDIFContext),
.priv_class = &bwdif_class,
.uninit = uninit,
FILTER_INPUTS(avfilter_vf_bwdif_inputs),
FILTER_OUTPUTS(avfilter_vf_bwdif_outputs),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
};
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