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72f4ddf532
Since using addresses that might change is something that finally the FSF acknowledge as a plausible scenario (after changing address twice), the license blurb in the source files should use the URI for getting the license in case the library did not come with it. Not that URIs cannot possibly change, but at least it's easier to set up a redirection at the same place. As a side note: this commit closes the oldes bug in Clutter's bug report tool. http://bugzilla.openedhand.com/show_bug.cgi?id=521
166 lines
5.4 KiB
C
166 lines
5.4 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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/**
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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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/* the functions above are experimental, the actual symbols are suffixed by
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* _EXP so we can ensure ABI compatibility and leave the cogl_buffer namespace
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* free for future use. A bunch of defines translates the symbols documented
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* above into the real symbols */
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CoglHandle
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cogl_pixel_buffer_new_EXP (unsigned int size);
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CoglHandle
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cogl_pixel_buffer_new_for_size_EXP (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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gboolean
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cogl_is_pixel_buffer_EXP (CoglHandle handle);
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#if 0
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gboolean
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cogl_pixel_buffer_set_region_EXP (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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#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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G_END_DECLS
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#endif /* __COGL_PIXEL_BUFFER_H__ */
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