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a6f061e41f
The premult part of _cogl_convert_premult has now been split out as _cogl_convert_premult_status. _cogl_convert_premult has been renamed to _cogl_convert_format to make it less confusing. The premult conversion is now done in-place instead of copying the buffer. Previously it was copying the buffer once for the format conversion and then copying it again for the premult conversion. The premult conversion never changes the size of the buffer so it's quite easy to do in place. We can also use the separated out function independently.
116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/*
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* Clutter COGL
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*
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* A basic GL/GLES Abstraction/Utility Layer
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*
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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2007 OpenedHand
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __COGL_BITMAP_H
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#define __COGL_BITMAP_H
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#include <glib.h>
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#include "cogl-handle.h"
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typedef struct _CoglBitmap
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{
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CoglHandleObject _parent;
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guchar *data;
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CoglPixelFormat format;
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gint width;
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gint height;
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gint rowstride;
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} CoglBitmap;
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gboolean
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_cogl_bitmap_can_convert (CoglPixelFormat src, CoglPixelFormat dst);
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gboolean
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_cogl_bitmap_fallback_can_convert (CoglPixelFormat src, CoglPixelFormat dst);
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gboolean
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_cogl_bitmap_can_unpremult (CoglPixelFormat format);
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gboolean
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_cogl_bitmap_fallback_can_unpremult (CoglPixelFormat format);
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gboolean
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_cogl_bitmap_can_premult (CoglPixelFormat format);
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gboolean
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_cogl_bitmap_fallback_can_premult (CoglPixelFormat format);
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gboolean
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_cogl_bitmap_convert (const CoglBitmap *bmp,
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CoglBitmap *dst_bmp,
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CoglPixelFormat dst_format);
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gboolean
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_cogl_bitmap_fallback_convert (const CoglBitmap *bmp,
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CoglBitmap *dst_bmp,
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CoglPixelFormat dst_format);
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gboolean
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_cogl_bitmap_unpremult (CoglBitmap *dst_bmp);
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gboolean
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_cogl_bitmap_fallback_unpremult (CoglBitmap *dst_bmp);
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gboolean
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_cogl_bitmap_premult (CoglBitmap *dst_bmp);
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gboolean
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_cogl_bitmap_fallback_premult (CoglBitmap *dst_bmp);
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gboolean
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_cogl_bitmap_from_file (CoglBitmap *bmp,
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const gchar *filename,
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GError **error);
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gboolean
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_cogl_bitmap_fallback_from_file (CoglBitmap *bmp,
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const gchar *filename);
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gboolean
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_cogl_bitmap_convert_premult_status (CoglBitmap *bmp,
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CoglPixelFormat dst_format);
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gboolean
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_cogl_bitmap_convert_format_and_premult (const CoglBitmap *bmp,
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CoglBitmap *dst_bmp,
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CoglPixelFormat dst_format);
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void
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_cogl_bitmap_copy_subregion (CoglBitmap *src,
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CoglBitmap *dst,
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gint src_x,
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gint src_y,
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gint dst_x,
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gint dst_y,
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gint width,
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gint height);
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gboolean
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_cogl_bitmap_get_size_from_file (const gchar *filename,
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gint *width,
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gint *height);
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#endif /* __COGL_BITMAP_H */
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