1000c80444
We had several different ways of exposing experimental API, in one case the symbols had no special suffix, in two other ways the symbols were given an _EXP suffix but in different ways. This makes all experimental API have an _EXP suffix which is handled using #defines in the header so the prototypes in the .c and .h files don't have the suffix. The documented reason for the suffix is so that anyone watching Cogl for ABI changes who sees symbols disappear will hopefully understand what's going on.
144 lines
4.6 KiB
C
144 lines
4.6 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2008,2009 Intel Corporation.
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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, see <http://www.gnu.org/licenses/>.
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*
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*
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*
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* Authors:
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* Robert Bragg <robert@linux.intel.com>
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*/
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#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <cogl/cogl.h> can be included directly."
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#endif
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#ifndef __COGL_PIXEL_BUFFER_H__
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#define __COGL_PIXEL_BUFFER_H__
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#include <glib.h>
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#include <cogl/cogl-types.h>
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G_BEGIN_DECLS
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/* All of the cogl-pixel-buffer API is currently experimental so we
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* suffix the actual symbols with _EXP so if somone is monitoring for
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* ABI changes it will hopefully be clearer to them what's going on if
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* any of the symbols dissapear at a later date.
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*/
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#define cogl_pixel_buffer_new cogl_pixel_buffer_new_EXP
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#define cogl_pixel_buffer_new_for_size cogl_pixel_buffer_new_for_size_EXP
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#define cogl_is_pixel_buffer cogl_is_pixel_buffer_EXP
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#if 0
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#define cogl_pixel_buffer_set_region cogl_pixel_buffer_set_region_EXP
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#endif
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/**
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* cogl_pixel_buffer_new:
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* @size: size of the buffer in bytes
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*
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* Creates a new buffer to store pixel data. You can create a new texture from
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* this buffer using cogl_texture_new_from_buffer().
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*
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* Return value: a #CoglHandle representing the newly created buffer or
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* %COGL_INVALID_HANDLE on failure
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*
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* Since: 1.2
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* Stability: Unstable
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*/
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CoglHandle
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cogl_pixel_buffer_new (unsigned int size);
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/**
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* cogl_pixel_buffer_new_for_size:
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* @width: width of the pixel buffer in pixels
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* @height: height of the pixel buffer in pixels
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* @format: the format of the pixels the buffer will store
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* @stride: if not %NULL the function will return the stride of the buffer
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* in bytes
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*
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* Creates a new buffer to store pixel data.
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*
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* <note>COGL will try its best to provide a hardware buffer you can map,
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* write into and effectively do a zero copy upload when creating a texture
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* from it with cogl_texture_new_from_buffer(). For various reasons, such
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* buffers are likely to have a stride larger than width * bytes_per_pixel. The
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* user must take the stride into account when writing into it.</note>
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*
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* Return value: a #CoglHandle representing the newly created buffer or
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* %COGL_INVALID_HANDLE on failure
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*
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* Since: 1.2
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* Stability: Unstable
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*/
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CoglHandle
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cogl_pixel_buffer_new_for_size (unsigned int width,
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unsigned int height,
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CoglPixelFormat format,
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unsigned int *stride);
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/**
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* cogl_is_pixel_buffer:
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* @handle: a #CoglHandle to test
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*
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* Checks whether @handle is a pixel buffer.
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*
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* Return value: %TRUE if the @handle is a pixel buffer, and %FALSE
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* otherwise
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*
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* Since: 1.2
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* Stability: Unstable
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*/
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gboolean
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cogl_is_pixel_buffer (CoglHandle handle);
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#if 0
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/*
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* cogl_pixel_buffer_set_region:
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* @buffer: the #CoglHandle of a pixel buffer
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* @data: pixel data to upload to @buffer
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* @src_width: width in pixels of the region to update
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* @src_height: height in pixels of the region to update
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* @src_rowstride: row stride in bytes of the source buffer
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* @dst_x: upper left destination horizontal coordinate
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* @dst_y: upper left destination vertical coordinate
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*
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* Uploads new data into a pixel buffer. The source data pointed by @data can
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* have a different stride than @buffer in which case the function will do the
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* right thing for you. For performance reasons, it is recommended for the
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* source data to have the same stride than @buffer.
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*
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* Return value: %TRUE if the upload succeeded, %FALSE otherwise
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*
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* Since: 1.2
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* Stability: Unstable
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*/
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gboolean
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cogl_pixel_buffer_set_region (CoglHandle buffer,
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guint8 *data,
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unsigned int src_width,
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unsigned int src_height,
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unsigned int src_rowstride,
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unsigned int dst_x,
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unsigned int dst_y);
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#endif
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G_END_DECLS
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#endif /* __COGL_PIXEL_BUFFER_H__ */
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