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mutter/cogl/cogl-pixel-buffer.h

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cogl-pixel-buffer: add a pixel buffer object class This subclass of CoglBuffer aims at wrapping PBOs or other system surfaces like DRM buffer objects. Two constructors are available: cogl_pixel_buffer_new() with a size when you only care about the size of the buffer (such a buffer can be used to store several texture data such as the three planes of a I420 frame). cogl_pixel_buffer_new_full() is more a 1:1 mapping between the data and an underlying surface, with the possibility of having access to a low level memory buffer that may have a stride.
2010-01-10 13:04:29 -05:00
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_PIXEL_BUFFER_H__
#define __COGL_PIXEL_BUFFER_H__
#include <glib.h>
#include <cogl/cogl-types.h>
G_BEGIN_DECLS
/**
* cogl_pixel_buffer_new:
* @size: size of the buffer in bytes
*
* Creates a new buffer to store pixel data. You can create a new texture from
* this buffer using cogl_texture_new_from_buffer().
*
* Return value: a #CoglHandle representing the newly created buffer or
* %COGL_INVALID_HANDLE on failure
*
* Since: 1.2
* Stability: Unstable
*/
CoglHandle
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
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cogl_pixel_buffer_new (unsigned int size);
cogl-pixel-buffer: add a pixel buffer object class This subclass of CoglBuffer aims at wrapping PBOs or other system surfaces like DRM buffer objects. Two constructors are available: cogl_pixel_buffer_new() with a size when you only care about the size of the buffer (such a buffer can be used to store several texture data such as the three planes of a I420 frame). cogl_pixel_buffer_new_full() is more a 1:1 mapping between the data and an underlying surface, with the possibility of having access to a low level memory buffer that may have a stride.
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/**
* cogl_pixel_buffer_new_for_size:
* @width: width of the pixel buffer in pixels
* @height: height of the pixel buffer in pixels
* @format: the format of the pixels the buffer will store
* @stride: if not %NULL the function will return the stride of the buffer
* in bytes
*
* Creates a new buffer to store pixel data.
*
* <note>COGL will try its best to provide a hardware buffer you can map,
* write into and effectively do a zero copy upload when creating a texture
* from it with cogl_texture_new_from_buffer(). For various reasons, such
* buffers are likely to have a stride larger than width * bytes_per_pixel. The
* user must take the stride into account when writing into it.</note>
*
* Return value: a #CoglHandle representing the newly created buffer or
* %COGL_INVALID_HANDLE on failure
*
* Since: 1.2
* Stability: Unstable
*/
CoglHandle
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
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cogl_pixel_buffer_new_for_size (unsigned int width,
unsigned int height,
cogl-pixel-buffer: add a pixel buffer object class This subclass of CoglBuffer aims at wrapping PBOs or other system surfaces like DRM buffer objects. Two constructors are available: cogl_pixel_buffer_new() with a size when you only care about the size of the buffer (such a buffer can be used to store several texture data such as the three planes of a I420 frame). cogl_pixel_buffer_new_full() is more a 1:1 mapping between the data and an underlying surface, with the possibility of having access to a low level memory buffer that may have a stride.
2010-01-10 13:04:29 -05:00
CoglPixelFormat format,
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
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unsigned int *stride);
cogl-pixel-buffer: add a pixel buffer object class This subclass of CoglBuffer aims at wrapping PBOs or other system surfaces like DRM buffer objects. Two constructors are available: cogl_pixel_buffer_new() with a size when you only care about the size of the buffer (such a buffer can be used to store several texture data such as the three planes of a I420 frame). cogl_pixel_buffer_new_full() is more a 1:1 mapping between the data and an underlying surface, with the possibility of having access to a low level memory buffer that may have a stride.
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/**
* cogl_is_pixel_buffer:
* @handle: a #CoglHandle to test
*
* Checks whether @handle is a pixel buffer.
*
* Return value: %TRUE if the @handle is a pixel buffer, and %FALSE
* otherwise
*
* Since: 1.2
* Stability: Unstable
*/
gboolean
cogl_is_pixel_buffer (CoglHandle handle);
docs: Fixes for Cogl
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#if 0
cogl-pixel-buffer: add a pixel buffer object class This subclass of CoglBuffer aims at wrapping PBOs or other system surfaces like DRM buffer objects. Two constructors are available: cogl_pixel_buffer_new() with a size when you only care about the size of the buffer (such a buffer can be used to store several texture data such as the three planes of a I420 frame). cogl_pixel_buffer_new_full() is more a 1:1 mapping between the data and an underlying surface, with the possibility of having access to a low level memory buffer that may have a stride.
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/*
* cogl_pixel_buffer_set_region:
* @buffer: the #CoglHandle of a pixel buffer
* @data: pixel data to upload to @buffer
* @src_width: width in pixels of the region to update
* @src_height: height in pixels of the region to update
* @src_rowstride: row stride in bytes of the source buffer
* @dst_x: upper left destination horizontal coordinate
* @dst_y: upper left destination vertical coordinate
*
* Uploads new data into a pixel buffer. The source data pointed by @data can
* have a different stride than @buffer in which case the function will do the
* right thing for you. For performance reasons, it is recommended for the
* source data to have the same stride than @buffer.
*
* Return value: %TRUE if the upload succeeded, %FALSE otherwise
*
* Since: 1.2
* Stability: Unstable
*/
gboolean
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
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cogl_pixel_buffer_set_region (CoglHandle buffer,
guint8 *data,
unsigned int src_width,
unsigned int src_height,
unsigned int src_rowstride,
unsigned int dst_x,
unsigned int dst_y);
cogl-pixel-buffer: add a pixel buffer object class This subclass of CoglBuffer aims at wrapping PBOs or other system surfaces like DRM buffer objects. Two constructors are available: cogl_pixel_buffer_new() with a size when you only care about the size of the buffer (such a buffer can be used to store several texture data such as the three planes of a I420 frame). cogl_pixel_buffer_new_full() is more a 1:1 mapping between the data and an underlying surface, with the possibility of having access to a low level memory buffer that may have a stride.
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#endif
/* the functions above are experimental, the actual symbols are suffixed by
* _EXP so we can ensure ABI compatibility and leave the cogl_buffer namespace
* free for future use. A bunch of defines translates the symbols documented
* above into the real symbols */
CoglHandle
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
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cogl_pixel_buffer_new_EXP (unsigned int size);
cogl-pixel-buffer: add a pixel buffer object class This subclass of CoglBuffer aims at wrapping PBOs or other system surfaces like DRM buffer objects. Two constructors are available: cogl_pixel_buffer_new() with a size when you only care about the size of the buffer (such a buffer can be used to store several texture data such as the three planes of a I420 frame). cogl_pixel_buffer_new_full() is more a 1:1 mapping between the data and an underlying surface, with the possibility of having access to a low level memory buffer that may have a stride.
2010-01-10 13:04:29 -05:00
CoglHandle
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-09 20:57:32 -05:00
cogl_pixel_buffer_new_for_size_EXP (unsigned int width,
unsigned int height,
CoglPixelFormat format,
unsigned int *stride);
cogl-pixel-buffer: add a pixel buffer object class This subclass of CoglBuffer aims at wrapping PBOs or other system surfaces like DRM buffer objects. Two constructors are available: cogl_pixel_buffer_new() with a size when you only care about the size of the buffer (such a buffer can be used to store several texture data such as the three planes of a I420 frame). cogl_pixel_buffer_new_full() is more a 1:1 mapping between the data and an underlying surface, with the possibility of having access to a low level memory buffer that may have a stride.
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gboolean
cogl_is_pixel_buffer_EXP (CoglHandle handle);
#if 0
gboolean
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-09 20:57:32 -05:00
cogl_pixel_buffer_set_region_EXP (CoglHandle buffer,
guint8 *data,
unsigned int src_width,
unsigned int src_height,
unsigned int src_rowstride,
unsigned int dst_x,
unsigned int dst_y);
cogl-pixel-buffer: add a pixel buffer object class This subclass of CoglBuffer aims at wrapping PBOs or other system surfaces like DRM buffer objects. Two constructors are available: cogl_pixel_buffer_new() with a size when you only care about the size of the buffer (such a buffer can be used to store several texture data such as the three planes of a I420 frame). cogl_pixel_buffer_new_full() is more a 1:1 mapping between the data and an underlying surface, with the possibility of having access to a low level memory buffer that may have a stride.
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#endif
#define cogl_pixel_buffer_new cogl_pixel_buffer_new_EXP
#define cogl_pixel_buffer_new_for_size cogl_pixel_buffer_new_for_size_EXP
#define cogl_is_pixel_buffer cogl_is_pixel_buffer_EXP
#if 0
#define cogl_pixel_buffer_set_region cogl_pixel_buffer_set_region_EXP
#endif
G_END_DECLS
#endif /* __COGL_PIXEL_BUFFER_H__ */
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