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73 lines
2.5 KiB
73 lines
2.5 KiB
/* GdkPixbuf library - Scaling and compositing functions
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*
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* Original:
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* Copyright (C) 2000 Red Hat, Inc
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* Author: Owen Taylor <otaylor@redhat.com>
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*
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* Modification for MLT:
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* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
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* Author: Dan Dennedy <dan@dennedy.org>
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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 Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef PIXOPS_H
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#define PIXOPS_H
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#include <glib.h>
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/* Interpolation modes; must match GdkInterpType */
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typedef enum {
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PIXOPS_INTERP_NEAREST,
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PIXOPS_INTERP_TILES,
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PIXOPS_INTERP_BILINEAR,
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PIXOPS_INTERP_HYPER
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} PixopsInterpType;
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/* Scale src_buf from src_width / src_height by factors scale_x, scale_y
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* and composite the portion corresponding to
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* render_x, render_y, render_width, render_height in the new
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* coordinate system into dest_buf starting at 0, 0
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*/
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void yuv422_scale (guchar *dest_buf,
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int render_x0,
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int render_y0,
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int render_x1,
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int render_y1,
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int dest_rowstride,
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int dest_channels,
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int dest_has_alpha,
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const guchar *src_buf,
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int src_width,
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int src_height,
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int src_rowstride,
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int src_channels,
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int src_has_alpha,
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double scale_x,
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double scale_y,
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PixopsInterpType interp_type);
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#define yuv422_scale_simple( dest_buf, dest_width, dest_height, dest_rowstride, src_buf, src_width, src_height, src_rowstride, interp_type ) \
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yuv422_scale( (dest_buf), 0, 0, \
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(dest_width), (dest_height), \
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(dest_rowstride), 2, 0, \
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(src_buf), (src_width), (src_height), \
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(src_rowstride), 2, 0, \
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(double) (dest_width) / (src_width), (double) (dest_height) / (src_height), \
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(PixopsInterpType) interp_type );
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#endif
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