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| author | jk7744.park <jk7744.park@samsung.com> | 2015-10-24 16:49:08 +0900 |
|---|---|---|
| committer | jk7744.park <jk7744.park@samsung.com> | 2015-10-24 16:49:08 +0900 |
| commit | 32e864f0f32b7628d995e84d07646b01dc5bf2d5 (patch) | |
| tree | 27f97eaa1ca7e171815e4f88b348448b05f02748 /gst/goom/mathtools.h | |
| parent | 9093d777f57b3f1dc62010bb8e0c7ed3d72a76d2 (diff) | |
| download | gst-plugins-good-accepted/tizen_2.4_mobile.tar.gz gst-plugins-good-accepted/tizen_2.4_mobile.tar.bz2 gst-plugins-good-accepted/tizen_2.4_mobile.zip | |
tizen 2.4 releasetizen_2.4_mobile_releasesubmit/tizen_2.4/20151028.064339accepted/tizen/2.4/mobile/20151029.032704accepted/tizen_2.4_mobile
Diffstat (limited to 'gst/goom/mathtools.h')
| -rw-r--r-- | gst/goom/mathtools.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/gst/goom/mathtools.h b/gst/goom/mathtools.h new file mode 100644 index 0000000..5340dab --- /dev/null +++ b/gst/goom/mathtools.h @@ -0,0 +1,58 @@ +/* Goom Project + * Copyright (C) <2003> Jean-Christophe Hoelt <jeko@free.fr> + * + * goom_core.c:Contains the core of goom's work. + * + * 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., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + + #ifndef MATHTOOLS_H +#define MATHTOOLS_H + +#include <glib.h> + +#define _double2fixmagic (68719476736.0*1.5) +/* 2^36 * 1.5, (52-_shiftamt=36) uses limited precisicion to floor */ +#define _shiftamt 16 +/* 16.16 fixed point representation */ + +#if G_BYTE_ORDER == G_BIG_ENDIAN +#define iexp_ 0 +#define iman_ 1 +#else +#define iexp_ 1 +#define iman_ 0 +#endif /* BigEndian_ */ + +/* TODO: this optimization is very efficient: put it again when all works +#ifdef HAVE_MMX +#define F2I(dbl,i) {double d = dbl + _double2fixmagic; i = ((int*)&d)[iman_] >> _shiftamt;} +#else*/ +#define F2I(dbl,i) i=(int)dbl; +/*#endif*/ + +#if 0 +#define SINCOS(f,s,c) \ + __asm__ __volatile__ ("fsincos" : "=t" (c), "=u" (s) : "0" (f)) +#else +#define SINCOS(f,s,c) {s=sin(f);c=cos(f);} +#endif + +extern float sin256[256]; +extern float cos256[256]; + +#endif + |