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/*
* Cogl
*
* A Low Level GPU Graphics and Utilities API
*
* Copyright (C) 2007 OpenedHand
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*
*/
#ifndef __COGL_BITMAP_H
#define __COGL_BITMAP_H
#include <glib.h>
#include "cogl-object-private.h"
#include "cogl-buffer.h"
#include "cogl-bitmap.h"
struct _CoglBitmap
{
CoglObject _parent;
/* Pointer back to the context that this bitmap was created with */
CoglContext *context;
CoglPixelFormat format;
int width;
int height;
int rowstride;
uint8_t *data;
gboolean mapped;
gboolean bound;
/* If this is non-null then 'data' is ignored and instead it is
fetched from this shared bitmap. */
CoglBitmap *shared_bmp;
/* If this is non-null then 'data' is treated as an offset into the
buffer and map will divert to mapping the buffer */
CoglBuffer *buffer;
};
/*
* _cogl_bitmap_new_with_malloc_buffer:
* @context: A #CoglContext
* @width: width of the bitmap in pixels
* @height: height of the bitmap in pixels
* @format: the format of the pixels the array will store
* @error: A #GError for catching exceptional errors or %NULL
*
* This is equivalent to cogl_bitmap_new_with_size() except that it
* allocated the buffer using g_malloc() instead of creating a
* #CoglPixelBuffer. The buffer will be automatically destroyed when
* the bitmap is freed.
*
* Return value: a #CoglPixelBuffer representing the newly created array
*
* Since: 1.10
* Stability: Unstable
*/
CoglBitmap *
_cogl_bitmap_new_with_malloc_buffer (CoglContext *context,
unsigned int width,
unsigned int height,
CoglPixelFormat format,
GError **error);
/* The idea of this function is that it will create a bitmap that
shares the actual data with another bitmap. This is needed for the
atlas texture backend because it needs upload a bitmap to a sub
texture but override the format so that it ignores the premult
flag. */
CoglBitmap *
_cogl_bitmap_new_shared (CoglBitmap *shared_bmp,
CoglPixelFormat format,
int width,
int height,
int rowstride);
CoglBitmap *
_cogl_bitmap_convert (CoglBitmap *bmp,
CoglPixelFormat dst_format,
GError **error);
CoglBitmap *
_cogl_bitmap_convert_for_upload (CoglBitmap *src_bmp,
CoglPixelFormat internal_format,
gboolean can_convert_in_place,
GError **error);
gboolean
_cogl_bitmap_convert_into_bitmap (CoglBitmap *src_bmp,
CoglBitmap *dst_bmp,
GError **error);
CoglBitmap *
_cogl_bitmap_from_file (CoglContext *ctx,
const char *filename,
GError **error);
gboolean
_cogl_bitmap_unpremult (CoglBitmap *dst_bmp,
GError **error);
gboolean
_cogl_bitmap_premult (CoglBitmap *dst_bmp,
GError **error);
gboolean
_cogl_bitmap_convert_premult_status (CoglBitmap *bmp,
CoglPixelFormat dst_format,
GError **error);
gboolean
_cogl_bitmap_copy_subregion (CoglBitmap *src,
CoglBitmap *dst,
int src_x,
int src_y,
int dst_x,
int dst_y,
int width,
int height,
GError **error);
/* Creates a deep copy of the source bitmap */
CoglBitmap *
_cogl_bitmap_copy (CoglBitmap *src_bmp,
GError **error);
gboolean
_cogl_bitmap_get_size_from_file (const char *filename,
int *width,
int *height);
void
_cogl_bitmap_set_format (CoglBitmap *bitmap,
CoglPixelFormat format);
/* Maps the bitmap so that the pixels can be accessed directly or if
the bitmap is just a memory bitmap then it just returns the pointer
to memory. Note that the bitmap isn't guaranteed to allocated to
the full size of rowstride*height so it is not safe to read up to
the rowstride of the last row. This will be the case if the user
uploads data using gdk_pixbuf_new_subpixbuf with a sub region
containing the last row of the pixbuf because in that case the
rowstride can be much larger than the width of the image */
uint8_t *
_cogl_bitmap_map (CoglBitmap *bitmap,
CoglBufferAccess access,
CoglBufferMapHint hints,
GError **error);
void
_cogl_bitmap_unmap (CoglBitmap *bitmap);
CoglContext *
_cogl_bitmap_get_context (CoglBitmap *bitmap);
#endif /* __COGL_BITMAP_H */
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