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mutter/cogl/cogl-pixel-buffer.c

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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) 2010 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:
* Damien Lespiau <damien.lespiau@intel.com>
*/
/* For an overview of the functionality implemented here, please see
* cogl-pixel-buffer.h, which contains the gtk-doc section overview for the
* Pixel Buffers API.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#include <glib.h>
#include "cogl.h"
#include "cogl-internal.h"
#include "cogl-util.h"
#include "cogl-context.h"
#include "cogl-handle.h"
#include "cogl-pixel-buffer-private.h"
#include "cogl-pixel-buffer.h"
/*
* GL/GLES compatibility defines for the buffer API:
*/
#if defined (HAVE_COGL_GL)
#define glGenBuffers ctx->drv.pf_glGenBuffers
#define glBindBuffer ctx->drv.pf_glBindBuffer
#define glBufferData ctx->drv.pf_glBufferData
#define glBufferSubData ctx->drv.pf_glBufferSubData
#define glGetBufferSubData ctx->drv.pf_glGetBufferSubData
#define glDeleteBuffers ctx->drv.pf_glDeleteBuffers
#define glMapBuffer ctx->drv.pf_glMapBuffer
#define glUnmapBuffer ctx->drv.pf_glUnmapBuffer
#define glActiveTexture ctx->drv.pf_glActiveTexture
#define glClientActiveTexture ctx->drv.pf_glClientActiveTexture
#ifndef GL_PIXEL_UNPACK_BUFFER
#define GL_PIXEL_UNPACK_BUFFER GL_PIXEL_UNPACK_BUFFER_ARB
#endif
#ifndef GL_PIXEL_PACK_BUFFER
#define GL_PIXEL_PACK_BUFFER GL_PIXEL_PACK_BUFFER_ARB
#endif
#elif defined (HAVE_COGL_GLES2)
#include "../gles/cogl-gles2-wrapper.h"
#endif
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
static void
_cogl_pixel_buffer_free (CoglPixelBuffer *buffer);
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-buffer: make sure the code compiles on GL ES OpenGL ES has no PBO extension, so we fallback to using a malloc'ed buffer. Make sure the OpenGL-only defines don't leak into the OpenGL ES compilation.
2010-02-02 11:44:16 -05:00
#if !defined (COGL_HAS_GLES)
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
static const CoglBufferVtable
cogl_pixel_buffer_vtable;
cogl-buffer: make sure the code compiles on GL ES OpenGL ES has no PBO extension, so we fallback to using a malloc'ed buffer. Make sure the OpenGL-only defines don't leak into the OpenGL ES compilation.
2010-02-02 11:44:16 -05:00
#endif
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
static const CoglBufferVtable
cogl_malloc_pixel_buffer_vtable;
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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/* we don't want to use the stock COGL_HANDLE_DEFINE * for 2 reasons:
* - it defines already deprecated symbols
* - we want to suffix the public symbols by _EXP */
#define COGL_HANDLE_DEFINE_EXP(TypeName, type_name) \
\
static CoglHandleClass _cogl_##type_name##_class; \
\
GQuark \
_cogl_handle_##type_name##_get_type (void) \
{ \
static GQuark type = 0; \
if (!type) \
type = g_quark_from_static_string ("Cogl"#TypeName); \
return type; \
} \
\
static CoglHandle \
_cogl_##type_name##_handle_new (Cogl##TypeName *new_obj) \
{ \
CoglHandleObject *obj = (CoglHandleObject *)&new_obj->_parent;\
obj->ref_count = 1; \
\
obj->klass = &_cogl_##type_name##_class; \
if (!obj->klass->type) \
{ \
obj->klass->type = _cogl_handle_##type_name##_get_type ();\
obj->klass->virt_free = _cogl_##type_name##_free; \
} \
\
_COGL_HANDLE_DEBUG_NEW (TypeName, obj); \
return (CoglHandle) new_obj; \
} \
\
Cogl##TypeName * \
_cogl_##type_name##_pointer_from_handle (CoglHandle handle) \
{ \
return (Cogl##TypeName *) handle; \
} \
\
gboolean \
cogl_is_##type_name##_EXP (CoglHandle handle) \
{ \
CoglHandleObject *obj = (CoglHandleObject *)handle; \
\
if (handle == COGL_INVALID_HANDLE) \
return FALSE; \
\
return (obj->klass->type == \
_cogl_handle_##type_name##_get_type ()); \
}
COGL_HANDLE_DEFINE_EXP(PixelBuffer, pixel_buffer)
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_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.
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{
CoglPixelBuffer *pixel_buffer = g_slice_new0 (CoglPixelBuffer);
CoglBuffer *buffer = COGL_BUFFER (pixel_buffer);
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
/* parent's constructor */
_cogl_buffer_initialize (buffer,
size,
cogl-buffer: Use TEXTURE as the only value for CoglBufferUsageHint We should try to use more explicit defines than GL for our hints. For now we only support using a CoglBuffer to generate textures.
2010-02-08 12:11:43 -05:00
COGL_BUFFER_USAGE_HINT_TEXTURE,
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_BUFFER_UPDATE_HINT_STATIC);
cogl-buffer: make sure the code compiles on GL ES OpenGL ES has no PBO extension, so we fallback to using a malloc'ed buffer. Make sure the OpenGL-only defines don't leak into the OpenGL ES compilation.
2010-02-02 11:44:16 -05:00
/* malloc version only for GLES */
#if !defined (COGL_HAS_GLES)
cogl-pixel-buffer: Add a fallback path First, let's add a new public feature called, surprisingly, COGL_FEATURE_PBOS to check the availability of PBOs and provide a fallback path when running on older GL implementations or on OpenGL ES In case the underlying OpenGL implementation does not provide PBOs, we need a fallback path (a malloc'ed buffer). The CoglPixelBufer constructors will instanciate a subclass of CoglBuffer that handles map/unmap and set_data() with a malloc'ed buffer. The public feature is useful to check before using set_data() on a buffer as it will mean doing a memcpy() when not supporting PBOs (in that case, it's better to create the texture directly instead of using a CoglBuffer).
2010-02-02 07:59:51 -05:00
if (cogl_features_available (COGL_FEATURE_PBOS))
{
/* PBOS */
buffer->vtable = &cogl_pixel_buffer_vtable;
GE( glGenBuffers (1, &buffer->gl_handle) );
COGL_BUFFER_SET_FLAG (buffer, BUFFER_OBJECT);
}
else
cogl-buffer: make sure the code compiles on GL ES OpenGL ES has no PBO extension, so we fallback to using a malloc'ed buffer. Make sure the OpenGL-only defines don't leak into the OpenGL ES compilation.
2010-02-02 11:44:16 -05:00
#endif
cogl-pixel-buffer: Add a fallback path First, let's add a new public feature called, surprisingly, COGL_FEATURE_PBOS to check the availability of PBOs and provide a fallback path when running on older GL implementations or on OpenGL ES In case the underlying OpenGL implementation does not provide PBOs, we need a fallback path (a malloc'ed buffer). The CoglPixelBufer constructors will instanciate a subclass of CoglBuffer that handles map/unmap and set_data() with a malloc'ed buffer. The public feature is useful to check before using set_data() on a buffer as it will mean doing a memcpy() when not supporting PBOs (in that case, it's better to create the texture directly instead of using a CoglBuffer).
2010-02-02 07:59:51 -05:00
{
/* malloc fallback subclass */
buffer->vtable = &cogl_malloc_pixel_buffer_vtable;
/* create the buffer here as there's no point for a lazy allocation in
* the malloc case */
buffer->data = g_malloc (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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pixel_buffer->flags = COGL_PIXEL_BUFFER_FLAG_NONE;
/* return COGL_INVALID_HANDLE; */
return _cogl_pixel_buffer_handle_new (pixel_buffer);
}
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 *rowstride)
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 buffer;
CoglPixelBuffer *pixel_buffer;
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
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.
2010-01-10 13:04:29 -05:00
/* creating a buffer to store "any" format does not make sense */
if (G_UNLIKELY (format == COGL_PIXEL_FORMAT_ANY))
return COGL_INVALID_HANDLE;
/* for now we fallback to cogl_pixel_buffer_new_EXP, later, we could ask
* libdrm a tiled buffer for instance */
stride = width * _cogl_get_format_bpp (format);
if (rowstride)
*rowstride = stride;
buffer = cogl_pixel_buffer_new_EXP (height * stride);
if (G_UNLIKELY (buffer == COGL_INVALID_HANDLE))
return COGL_INVALID_HANDLE;
pixel_buffer = COGL_PIXEL_BUFFER (buffer);
pixel_buffer->width = width;
pixel_buffer->height = height;
pixel_buffer->format = format;
pixel_buffer->stride = stride;
return buffer;
}
static void
_cogl_pixel_buffer_free (CoglPixelBuffer *buffer)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
/* parent's destructor */
_cogl_buffer_fini (COGL_BUFFER (buffer));
GE( glDeleteBuffers (1, &(COGL_BUFFER (buffer)->gl_handle)) );
g_slice_free (CoglPixelBuffer, buffer);
}
cogl-buffer: make sure the code compiles on GL ES OpenGL ES has no PBO extension, so we fallback to using a malloc'ed buffer. Make sure the OpenGL-only defines don't leak into the OpenGL ES compilation.
2010-02-02 11:44:16 -05:00
#if !defined (COGL_HAS_GLES)
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
static guint8 *
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_map (CoglBuffer *buffer,
CoglBufferAccess access)
{
CoglPixelBuffer *pixel_buffer = COGL_PIXEL_BUFFER (buffer);
GLenum gl_target;
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
guint8 *data;
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_GET_CONTEXT (ctx, NULL);
/* we determine the target lazily, on the first map */
gl_target = GL_PIXEL_UNPACK_BUFFER;
pixel_buffer->gl_target = gl_target;
_cogl_buffer_bind (buffer, gl_target);
/* create an empty store if we don't have one yet. creating the store
* lazily allows the user of the CoglBuffer to set a hint before the
* store is created. */
if (!COGL_PIXEL_BUFFER_FLAG_IS_SET (pixel_buffer, STORE_CREATED))
{
GE( glBufferData (gl_target,
buffer->size,
NULL,
_cogl_buffer_hints_to_gl_enum (buffer->usage_hint,
buffer->update_hint)) );
COGL_PIXEL_BUFFER_SET_FLAG (pixel_buffer, STORE_CREATED);
}
GE_RET( data, glMapBuffer (gl_target,
_cogl_buffer_access_to_gl_enum (access)) );
if (data)
COGL_BUFFER_SET_FLAG (buffer, MAPPED);
_cogl_buffer_bind (NULL, gl_target);
return data;
}
static void
_cogl_pixel_buffer_unmap (CoglBuffer *buffer)
{
CoglPixelBuffer *pixel_buffer = COGL_PIXEL_BUFFER (buffer);
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
_cogl_buffer_bind (buffer, pixel_buffer->gl_target);
GE( glUnmapBuffer (pixel_buffer->gl_target) );
COGL_BUFFER_CLEAR_FLAG (buffer, MAPPED);
_cogl_buffer_bind (NULL, pixel_buffer->gl_target);
}
static gboolean
_cogl_pixel_buffer_set_data (CoglBuffer *buffer,
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
unsigned int offset,
const guint8 *data,
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
{
CoglPixelBuffer *pixel_buffer = COGL_PIXEL_BUFFER (buffer);
_COGL_GET_CONTEXT (ctx, FALSE);
pixel_buffer->gl_target = GL_PIXEL_UNPACK_BUFFER;
_cogl_buffer_bind (buffer, pixel_buffer->gl_target);
/* create an empty store if we don't have one yet. creating the store
* lazily allows the user of the CoglBuffer to set a hint before the
* store is created. */
if (!COGL_PIXEL_BUFFER_FLAG_IS_SET (pixel_buffer, STORE_CREATED))
{
GE( glBufferData (pixel_buffer->gl_target,
buffer->size,
NULL,
_cogl_buffer_hints_to_gl_enum (buffer->usage_hint,
buffer->update_hint)) );
COGL_PIXEL_BUFFER_SET_FLAG (pixel_buffer, STORE_CREATED);
}
GE( glBufferSubData (pixel_buffer->gl_target, offset, size, data) );
_cogl_buffer_bind (NULL, pixel_buffer->gl_target);
return TRUE;
}
#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.
2010-01-10 13:04:29 -05:00
{
if (!cogl_is_pixel_buffer (buffer))
return FALSE;
return TRUE;
}
#endif
static const CoglBufferVtable cogl_pixel_buffer_vtable =
{
_cogl_pixel_buffer_map,
_cogl_pixel_buffer_unmap,
_cogl_pixel_buffer_set_data,
};
cogl-buffer: make sure the code compiles on GL ES OpenGL ES has no PBO extension, so we fallback to using a malloc'ed buffer. Make sure the OpenGL-only defines don't leak into the OpenGL ES compilation.
2010-02-02 11:44:16 -05:00
#endif
cogl-pixel-buffer: Add a fallback path First, let's add a new public feature called, surprisingly, COGL_FEATURE_PBOS to check the availability of PBOs and provide a fallback path when running on older GL implementations or on OpenGL ES In case the underlying OpenGL implementation does not provide PBOs, we need a fallback path (a malloc'ed buffer). The CoglPixelBufer constructors will instanciate a subclass of CoglBuffer that handles map/unmap and set_data() with a malloc'ed buffer. The public feature is useful to check before using set_data() on a buffer as it will mean doing a memcpy() when not supporting PBOs (in that case, it's better to create the texture directly instead of using a CoglBuffer).
2010-02-02 07:59:51 -05:00
/*
* Fallback path, buffer->data points to a malloc'ed buffer.
*/
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
static guint8 *
cogl-pixel-buffer: Add a fallback path First, let's add a new public feature called, surprisingly, COGL_FEATURE_PBOS to check the availability of PBOs and provide a fallback path when running on older GL implementations or on OpenGL ES In case the underlying OpenGL implementation does not provide PBOs, we need a fallback path (a malloc'ed buffer). The CoglPixelBufer constructors will instanciate a subclass of CoglBuffer that handles map/unmap and set_data() with a malloc'ed buffer. The public feature is useful to check before using set_data() on a buffer as it will mean doing a memcpy() when not supporting PBOs (in that case, it's better to create the texture directly instead of using a CoglBuffer).
2010-02-02 07:59:51 -05:00
_cogl_malloc_pixel_buffer_map (CoglBuffer *buffer,
CoglBufferAccess access)
{
COGL_BUFFER_SET_FLAG (buffer, MAPPED);
return buffer->data;
}
static void
_cogl_malloc_pixel_buffer_unmap (CoglBuffer *buffer)
{
COGL_BUFFER_CLEAR_FLAG (buffer, MAPPED);
}
static gboolean
_cogl_malloc_pixel_buffer_set_data (CoglBuffer *buffer,
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
unsigned int offset,
const guint8 *data,
unsigned int size)
cogl-pixel-buffer: Add a fallback path First, let's add a new public feature called, surprisingly, COGL_FEATURE_PBOS to check the availability of PBOs and provide a fallback path when running on older GL implementations or on OpenGL ES In case the underlying OpenGL implementation does not provide PBOs, we need a fallback path (a malloc'ed buffer). The CoglPixelBufer constructors will instanciate a subclass of CoglBuffer that handles map/unmap and set_data() with a malloc'ed buffer. The public feature is useful to check before using set_data() on a buffer as it will mean doing a memcpy() when not supporting PBOs (in that case, it's better to create the texture directly instead of using a CoglBuffer).
2010-02-02 07:59:51 -05:00
{
memcpy (buffer->data + offset, data, size);
return TRUE;
}
static const CoglBufferVtable cogl_malloc_pixel_buffer_vtable =
{
_cogl_malloc_pixel_buffer_map,
_cogl_malloc_pixel_buffer_unmap,
_cogl_malloc_pixel_buffer_set_data,
};
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