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deinterlace: Add C implementation of YADIF
Import the YADIF deinterlacer from ffmpeg and modify it to match the simple deinterlace scanlines structure. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/444>
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parent
1c1bc56a3b
commit
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5 changed files with 234 additions and 3 deletions
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@ -40,6 +40,7 @@
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#include "gstdeinterlace.h"
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#include "tvtime/plugins.h"
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#include "yadif.h"
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#include <string.h>
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@ -157,6 +158,7 @@ static const GEnumValue methods_types[] = {
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"weavetff"},
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{GST_DEINTERLACE_WEAVE_BFF, "Progressive: Bottom Field First (Do Not Use)",
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"weavebff"},
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{GST_DEINTERLACE_YADIF, "YADIF Adaptive Deinterlacer", "yadif"},
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{0, NULL, NULL},
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};
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@ -368,7 +370,8 @@ static const struct
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gst_deinterlace_method_scaler_bob_get_type}, {
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gst_deinterlace_method_weave_get_type}, {
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gst_deinterlace_method_weave_tff_get_type}, {
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gst_deinterlace_method_weave_bff_get_type}
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gst_deinterlace_method_weave_bff_get_type}, {
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gst_deinterlace_method_yadif_get_type}
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};
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static void
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@ -538,6 +541,7 @@ gst_deinterlace_class_init (GstDeinterlaceClass * klass)
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* * weave Weave. Bad quality, do not use.
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* * weavetff Progressive: Top Field First. Bad quality, do not use.
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* * weavebff Progressive: Bottom Field First. Bad quality, do not use.
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* * yadif YADIF Adaptive.
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*/
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g_object_class_install_property (gobject_class, PROP_METHOD,
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g_param_spec_enum ("method",
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@ -56,7 +56,8 @@ typedef enum
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GST_DEINTERLACE_SCALER_BOB,
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GST_DEINTERLACE_WEAVE,
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GST_DEINTERLACE_WEAVE_TFF,
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GST_DEINTERLACE_WEAVE_BFF
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GST_DEINTERLACE_WEAVE_BFF,
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GST_DEINTERLACE_YADIF
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} GstDeinterlaceMethods;
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typedef enum
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@ -10,7 +10,8 @@ interlace_sources = [
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'tvtime/weave.c',
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'tvtime/linear.c',
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'tvtime/linearblend.c',
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'tvtime/scalerbob.c'
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'tvtime/scalerbob.c',
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'yadif.c'
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]
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orcsrc = 'tvtime'
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197
gst/deinterlace/yadif.c
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197
gst/deinterlace/yadif.c
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@ -0,0 +1,197 @@
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/*
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* GStreamer
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* Copyright (C) 2019 Jan Schmidt <jan@centricular.com>
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*
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* Portions of this file extracted from libav
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* Copyright (C) 2006 Michael Niedermayer <michaelni@gmx.at>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <gst/gst.h>
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#ifdef HAVE_ORC
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#include <orc/orc.h>
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#endif
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#include "gstdeinterlacemethod.h"
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#include "yadif.h"
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#define GST_TYPE_DEINTERLACE_METHOD_YADIF (gst_deinterlace_method_yadif_get_type ())
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#define GST_IS_DEINTERLACE_METHOD_YADIF(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DEINTERLACE_METHOD_YADIF))
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#define GST_IS_DEINTERLACE_METHOD_YADIF_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DEINTERLACE_METHOD_YADIF))
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#define GST_DEINTERLACE_METHOD_YADIF_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_DEINTERLACE_METHOD_YADIF, GstDeinterlaceMethodYadifClass))
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#define GST_DEINTERLACE_METHOD_YADIF(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DEINTERLACE_METHOD_YADIF, GstDeinterlaceMethodYadif))
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#define GST_DEINTERLACE_METHOD_YADIF_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DEINTERLACE_METHOD_YADIF, GstDeinterlaceMethodYadifClass))
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#define GST_DEINTERLACE_METHOD_YADIF_CAST(obj) ((GstDeinterlaceMethodYadif*)(obj))
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typedef GstDeinterlaceSimpleMethod GstDeinterlaceMethodYadif;
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typedef GstDeinterlaceSimpleMethodClass GstDeinterlaceMethodYadifClass;
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G_DEFINE_TYPE (GstDeinterlaceMethodYadif,
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gst_deinterlace_method_yadif, GST_TYPE_DEINTERLACE_SIMPLE_METHOD);
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static void
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filter_scanline_yadif (GstDeinterlaceSimpleMethod * self,
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guint8 * out, const GstDeinterlaceScanlineData * scanlines, guint size);
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static void
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copy_scanline (GstDeinterlaceSimpleMethod * self, guint8 * out,
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const GstDeinterlaceScanlineData * scanlines, guint size)
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{
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memcpy (out, scanlines->m0, size);
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}
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static void
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gst_deinterlace_method_yadif_class_init
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(GstDeinterlaceMethodYadifClass * klass)
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{
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GstDeinterlaceMethodClass *dim_class = (GstDeinterlaceMethodClass *) klass;
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GstDeinterlaceSimpleMethodClass *dism_class =
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(GstDeinterlaceSimpleMethodClass *) klass;
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dim_class->name = "YADIF Adaptive Deinterlacer";
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dim_class->nick = "yadif";
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dim_class->fields_required = 5;
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dim_class->latency = 2;
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dism_class->copy_scanline_planar_y = copy_scanline;
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dism_class->copy_scanline_planar_u = copy_scanline;
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dism_class->copy_scanline_planar_v = copy_scanline;
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dism_class->interpolate_scanline_planar_y = filter_scanline_yadif;
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dism_class->interpolate_scanline_planar_u = filter_scanline_yadif;
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dism_class->interpolate_scanline_planar_v = filter_scanline_yadif;
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}
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static void
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gst_deinterlace_method_yadif_init (GstDeinterlaceMethodYadif * self)
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{
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}
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#define FFABS(a) ABS(a)
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#define FFMIN(a,b) MIN(a,b)
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#define FFMAX(a,b) MAX(a,b)
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#define FFMAX3(a,b,c) FFMAX(FFMAX(a,b),c)
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#define FFMIN3(a,b,c) FFMIN(FFMIN(a,b),c)
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#define CHECK(j)\
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{ int score = FFABS(s->t0[x - 1 + (j)] - s->b0[x - 1 - (j)])\
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+ FFABS(s->t0[x +(j)] - s->b0[x -(j)])\
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+ FFABS(s->t0[x + 1 + (j)] - s->b0[x + 1 - (j)]);\
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if (score < spatial_score) {\
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spatial_score= score;\
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spatial_pred= (s->t0[x +(j)] + s->b0[x -(j)])>>1;\
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/* The is_not_edge argument here controls when the code will enter a branch
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* which reads up to and including x-3 and x+3. */
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#define FILTER(start, end, is_not_edge) \
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for (x = start; x < end; x++) { \
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int c = s->t0[x]; \
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int d = (s->m1[x] + s->mp[x])>>1; \
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int e = s->b0[x]; \
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int temporal_diff0 = FFABS(s->m1[x] - s->mp[x]); \
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int temporal_diff1 =(FFABS(s->t2[x] - c) + FFABS(s->b2[x] - e) )>>1; \
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int temporal_diff2 =(FFABS(s->tp2[x] - c) + FFABS(s->bp2[x] - e) )>>1; \
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int diff = FFMAX3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2); \
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int spatial_pred = (c+e) >> 1; \
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\
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if (is_not_edge) {\
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int spatial_score = FFABS(s->t0[x-1] - s->b0[x-1]) + FFABS(c-e) \
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+ FFABS(s->t0[x+1] - s->b0[x+1]); \
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CHECK(-1) CHECK(-2) }} }} \
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CHECK( 1) CHECK( 2) }} }} \
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}\
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\
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if (!(mode&2)) { \
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int b = (s->tt1[x] + s->ttp[x])>>1; \
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int f = (s->bb1[x] + s->bbp[x])>>1; \
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int max = FFMAX3(d - e, d - c, FFMIN(b - c, f - e)); \
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int min = FFMIN3(d - e, d - c, FFMAX(b - c, f - e)); \
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\
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diff = FFMAX3(diff, min, -max); \
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} \
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\
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if (spatial_pred > d + diff) \
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spatial_pred = d + diff; \
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else if (spatial_pred < d - diff) \
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spatial_pred = d - diff; \
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\
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dst[x] = spatial_pred; \
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\
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}
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static void
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filter_line_c (guint8 * dst,
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const GstDeinterlaceScanlineData * s, int start, int end, int mode)
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{
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int x;
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/* The function is called for processing the middle
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* pixels of each line, excluding 3 at each end.
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* This allows the FILTER macro to be
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* called so that it processes all the pixels normally. A constant value of
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* true for is_not_edge lets the compiler ignore the if statement. */
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FILTER (start, end, 1)
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}
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#define MAX_ALIGN 8
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static void
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filter_edges (guint8 * dst,
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const GstDeinterlaceScanlineData * s, int w, int mode)
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{
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int x;
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const int edge = MAX_ALIGN - 1;
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/* Only edge pixels need to be processed here. A constant value of false
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* for is_not_edge should let the compiler ignore the whole branch. */
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FILTER (0, 3, 0)
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FILTER (w - edge, w - 3, 1)
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FILTER (w - 3, w, 0)
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}
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static void
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filter_scanline_yadif (GstDeinterlaceSimpleMethod * self,
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guint8 * out, const GstDeinterlaceScanlineData * s_orig, guint size)
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{
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uint8_t *dst = out;
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const int bpp = 1; // Hard code 8-bit atm
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int w = size / bpp;
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int edge = MAX_ALIGN / bpp - 1;
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GstDeinterlaceScanlineData s = *s_orig;
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int mode = (s.tt1 == NULL || s.bb1 == NULL || s.ttp == NULL
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|| s.bbp == NULL) ? 2 : 0;
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/* When starting up, some data might not yet be available, so use the current frame */
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if (s.m1 == NULL) {
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s.tt1 = s.ttp;
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s.m1 = s.mp;
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s.bb1 = s.bbp;
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}
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if (s.t2 == NULL)
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s.t2 = s.tp2;
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if (s.b2 == NULL)
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s.b2 = s.bp2;
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filter_edges (dst, &s, w, mode);
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filter_line_c (dst, &s, 3, w - edge, mode);
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}
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28
gst/deinterlace/yadif.h
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28
gst/deinterlace/yadif.h
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@ -0,0 +1,28 @@
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/*
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* GStreamer
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* Copyright (C) 2019 Jan Schmidt <jan@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __YADIF_H__
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#define __YADIF_H__
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#define GST_TYPE_DEINTERLACE_YADIF (gst_deinterlace_method_yadif_get_type ())
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GType gst_deinterlace_method_yadif_get_type (void);
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#endif
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