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Diffstat (limited to 'gst/deinterlace/tvtime/vfir.c')
| -rw-r--r-- | gst/deinterlace/tvtime/vfir.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/gst/deinterlace/tvtime/vfir.c b/gst/deinterlace/tvtime/vfir.c new file mode 100644 index 00000000..b3ebaae1 --- /dev/null +++ b/gst/deinterlace/tvtime/vfir.c @@ -0,0 +1,187 @@ +/* + * + * 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) +{ +} |