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/*
*
* GStreamer
* Copyright (C) 2004 Billy Biggs <vektor@dumbterm.net>
* Copyright (c) 2001, 2002, 2003 Fabrice Bellard.
* Copyright (C) 2008 Sebastian Dröge <slomo@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* This file contains code from ffmpeg, see http://ffmpeg.org/ (LGPL)
* and modifications by Billy Biggs.
*
* Relicensed for GStreamer from GPL to LGPL with permit from Billy Biggs.
* See: http://bugzilla.gnome.org/show_bug.cgi?id=163578
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "_stdint.h"
#include "gstdeinterlace.h"
#include <string.h>
#define GST_TYPE_DEINTERLACE_METHOD_VFIR (gst_deinterlace_method_vfir_get_type ())
#define GST_IS_DEINTERLACE_METHOD_VFIR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DEINTERLACE_METHOD_VFIR))
#define GST_IS_DEINTERLACE_METHOD_VFIR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DEINTERLACE_METHOD_VFIR))
#define GST_DEINTERLACE_METHOD_VFIR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_DEINTERLACE_METHOD_VFIR, GstDeinterlaceMethodVFIRClass))
#define GST_DEINTERLACE_METHOD_VFIR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DEINTERLACE_METHOD_VFIR, GstDeinterlaceMethodVFIR))
#define GST_DEINTERLACE_METHOD_VFIR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DEINTERLACE_METHOD_VFIR, GstDeinterlaceMethodVFIRClass))
#define GST_DEINTERLACE_METHOD_VFIR_CAST(obj) ((GstDeinterlaceMethodVFIR*)(obj))
GType gst_deinterlace_method_vfir_get_type (void);
typedef GstDeinterlaceSimpleMethod GstDeinterlaceMethodVFIR;
typedef GstDeinterlaceSimpleMethodClass GstDeinterlaceMethodVFIRClass;
/*
* The MPEG2 spec uses a slightly harsher filter, they specify
* [-1 8 2 8 -1]. ffmpeg uses a similar filter but with more of
* a tendancy to blur than to use the local information. The
* filter taps here are: [-1 4 2 4 -1].
*/
/**
* C implementation.
*/
static inline void
deinterlace_line_c (GstDeinterlaceMethod * self, GstDeinterlace * parent,
guint8 * dst, GstDeinterlaceScanlineData * scanlines, gint width)
{
gint sum;
guint8 *lum_m4 = scanlines->tt1;
guint8 *lum_m3 = scanlines->t0;
guint8 *lum_m2 = scanlines->m1;
guint8 *lum_m1 = scanlines->b0;
guint8 *lum = scanlines->bb1;
gint size = width * 2;
for (; size >= 0; size--) {
sum = -lum_m4[0];
sum += lum_m3[0] << 2;
sum += lum_m2[0] << 1;
sum += lum_m1[0] << 2;
sum += -lum[0];
dst[0] = (sum + 4) >> 3; // This needs to be clipped at 0 and 255: cm[(sum + 4) >> 3];
lum_m4++;
lum_m3++;
lum_m2++;
lum_m1++;
lum++;
dst++;
}
}
#ifdef BUILD_X86_ASM
#include "mmx.h"
static void
deinterlace_line_mmx (GstDeinterlaceMethod * self, GstDeinterlace * parent,
guint8 * dst, GstDeinterlaceScanlineData * scanlines, gint width)
{
mmx_t rounder;
guint8 *lum_m4 = scanlines->tt1;
guint8 *lum_m3 = scanlines->t0;
guint8 *lum_m2 = scanlines->m1;
guint8 *lum_m1 = scanlines->b0;
guint8 *lum = scanlines->bb1;
rounder.uw[0] = 4;
rounder.uw[1] = 4;
rounder.uw[2] = 4;
rounder.uw[3] = 4;
pxor_r2r (mm7, mm7);
movq_m2r (rounder, mm6);
for (; width > 1; width -= 2) {
movd_m2r (*lum_m4, mm0);
movd_m2r (*lum_m3, mm1);
movd_m2r (*lum_m2, mm2);
movd_m2r (*lum_m1, mm3);
movd_m2r (*lum, mm4);
punpcklbw_r2r (mm7, mm0);
punpcklbw_r2r (mm7, mm1);
punpcklbw_r2r (mm7, mm2);
punpcklbw_r2r (mm7, mm3);
punpcklbw_r2r (mm7, mm4);
paddw_r2r (mm3, mm1);
psllw_i2r (1, mm2);
paddw_r2r (mm4, mm0);
psllw_i2r (2, mm1); // 2
paddw_r2r (mm6, mm2);
paddw_r2r (mm2, mm1);
psubusw_r2r (mm0, mm1);
psrlw_i2r (3, mm1); // 3
packuswb_r2r (mm7, mm1);
movd_r2m (mm1, *dst);
lum_m4 += 4;
lum_m3 += 4;
lum_m2 += 4;
lum_m1 += 4;
lum += 4;
dst += 4;
}
emms ();
/* Handle odd widths */
if (width > 0) {
scanlines->tt1 = lum_m4;
scanlines->t0 = lum_m3;
scanlines->m1 = lum_m2;
scanlines->b0 = lum_m1;
scanlines->bb1 = lum;
deinterlace_line_c (self, parent, dst, scanlines, width);
}
}
#endif
G_DEFINE_TYPE (GstDeinterlaceMethodVFIR, gst_deinterlace_method_vfir,
GST_TYPE_DEINTERLACE_SIMPLE_METHOD);
static void
gst_deinterlace_method_vfir_class_init (GstDeinterlaceMethodVFIRClass * klass)
{
GstDeinterlaceMethodClass *dim_class = (GstDeinterlaceMethodClass *) klass;
GstDeinterlaceSimpleMethodClass *dism_class =
(GstDeinterlaceSimpleMethodClass *) klass;
#ifdef BUILD_X86_ASM
guint cpu_flags = oil_cpu_get_flags ();
#endif
dim_class->fields_required = 2;
dim_class->name = "Blur Vertical";
dim_class->nick = "vfir";
dim_class->latency = 0;
#ifdef BUILD_X86_ASM
if (cpu_flags & OIL_IMPL_FLAG_MMX) {
dism_class->interpolate_scanline = deinterlace_line_mmx;
} else {
dism_class->interpolate_scanline = deinterlace_line_c;
}
#else
dism_class->interpolate_scanline = deinterlace_line_c;
#endif
}
static void
gst_deinterlace_method_vfir_init (GstDeinterlaceMethodVFIR * self)
{
}
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