diff options
Diffstat (limited to 'kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/affine.h')
-rw-r--r-- | kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/affine.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/affine.h b/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/affine.h new file mode 100644 index 00000000..620fdc9d --- /dev/null +++ b/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/affine.h @@ -0,0 +1,43 @@ +/* + * affine.h -- Affine Transforms for 2d objects + * Copyright (C) 2002 Charles Yates <charles.yates@pandora.be> + * Portions Copyright (C) 2003 Dan Dennedy <dan@dennedy.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef _AFFINE_H +#define _AFFINE_H + +#include <math.h> + +/** Affine transforms for 2d image manipulation. Current provides shearing and + rotating support. +*/ + +typedef struct { + double matrix[2][2]; +} affine_transform_t; + +void affine_transform_init( affine_transform_t *this ); +void affine_transform_rotate( affine_transform_t *this, double angle ); +void affine_transform_shear( affine_transform_t *this, double shear ); +void affine_transform_scale( affine_transform_t *this, double sx, double sy ); +double affine_transform_mapx( affine_transform_t *this, int x, int y ); +double affine_transform_mapy( affine_transform_t *this, int x, int y ); +void affine_scale( const unsigned char *src, unsigned char *dest, int src_width, int src_height, int dest_width, int dest_height, int bpp ); + +#endif + |