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compositor: Add MetaMultiTexture class

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In future commits, we want to be able to handle more complex textures,
such as video frames which are encoded in a YUV-pixel format and have
multiple planes (which each map to a separate texture).

To accomplish this, we introduce a new object `MetaMultiTexture`: this
object can deal with more complex formats by handling multiple
`CoglTexture`s. In a later stage, it will be able to add `CoglSnippet`s
to perform e.g. pixel format conversion (for example from YUV to RGBA).
This commit is contained in:
Niels De Graef 2019-10-16 12:11:33 +02:00
parent dbe919ef92
commit 65a3b13b2f
6 changed files with 807 additions and 0 deletions
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317
src/compositor/meta-multi-texture-format.c Normal file
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/*
* Authored By Niels De Graef <niels.degraef@barco.com>
*
* Copyright (C) 2018 Barco NV
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:meta-multi-texture-format
* @title: MetaMultiTextureFormat
* @short_description: A representation for complex pixel formats
*
* Some pixel formats that are used in the wild are a bit more complex than
* just ARGB and all its variants. For example: a component might be put in a
* different plane (i.e. at a different place in memory). Another example are
* formats that use Y, U, and V components rather than RGB; if we composit them
* onto an RGBA framebuffer, we have to make sure for example that these get
* converted to the right color format first (using e.g. a shader).
*/
#include "meta/meta-multi-texture-format.h"
#include <cogl/cogl.h>
#include <stdlib.h>
#include <string.h>
typedef struct _MetaMultiTextureFormatInfo
{
MetaMultiTextureFormat multi_format;
uint8_t n_planes;
/* Per plane-information */
uint8_t bpp[COGL_PIXEL_FORMAT_MAX_PLANES]; /* Bytes per pixel (without subsampling) */
uint8_t hsub[COGL_PIXEL_FORMAT_MAX_PLANES]; /* horizontal subsampling */
uint8_t vsub[COGL_PIXEL_FORMAT_MAX_PLANES]; /* vertical subsampling */
CoglPixelFormat subformats[COGL_PIXEL_FORMAT_MAX_PLANES]; /* influences how we deal with it on a GL level */
} MetaMultiTextureFormatInfo;
/* NOTE: The actual enum values are used as the index, so you don't need to
* loop over the table */
static MetaMultiTextureFormatInfo multi_format_table[] = {
/* Simple */
{
.n_planes = 1,
.bpp = { 4 },
.hsub = { 1 },
.vsub = { 1 },
.subformats = { COGL_PIXEL_FORMAT_ANY },
},
/* Packed YUV */
{ /* YUYV */
.n_planes = 1,
.bpp = { 4 },
.hsub = { 1 },
.vsub = { 1 },
.subformats = { COGL_PIXEL_FORMAT_ARGB_8888 },
},
{ /* YVYU */
.n_planes = 1,
.bpp = { 4 },
.hsub = { 1 },
.vsub = { 1 },
.subformats = { COGL_PIXEL_FORMAT_ARGB_8888 },
},
{ /* UYVY */
.n_planes = 1,
.bpp = { 4 },
.hsub = { 1 },
.vsub = { 1 },
.subformats = { COGL_PIXEL_FORMAT_ARGB_8888 },
},
{ /* VYUY */
.n_planes = 1,
.bpp = { 4 },
.hsub = { 1 },
.vsub = { 1 },
.subformats = { COGL_PIXEL_FORMAT_ARGB_8888 },
},
{ /* AYUV */
.n_planes = 1,
.bpp = { 4 },
.hsub = { 1 },
.vsub = { 1 },
.subformats = { COGL_PIXEL_FORMAT_ARGB_8888 },
},
/* 2 plane RGB + A */
{ /* XRGB8888_A8 */
.n_planes = 2,
.bpp = { 4, 1 },
.hsub = { 1, 1 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_ARGB_8888, COGL_PIXEL_FORMAT_A_8 },
},
{ /* XBGR8888_A8 */
.n_planes = 2,
.bpp = { 4, 1 },
.hsub = { 1, 1 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_ABGR_8888, COGL_PIXEL_FORMAT_A_8 },
},
{ /* RGBX8888_A8 */
.n_planes = 2,
.bpp = { 4, 1 },
.hsub = { 1, 1 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_RGBA_8888, COGL_PIXEL_FORMAT_A_8 },
},
{ /* BGRX8888_A8 */
.n_planes = 2,
.bpp = { 4, 1 },
.hsub = { 1, 1 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_BGRA_8888, COGL_PIXEL_FORMAT_A_8 },
},
{ /* RGB888_A8 */
.n_planes = 2,
.bpp = { 3, 1 },
.hsub = { 1, 1 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_RGB_888, COGL_PIXEL_FORMAT_A_8 },
},
{ /* BGR888_A8 */
.n_planes = 2,
.bpp = { 3, 1 },
.hsub = { 1, 1 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_BGR_888, COGL_PIXEL_FORMAT_A_8 },
},
{ /* RGB565_A8 */
.n_planes = 2,
.bpp = { 2, 1 },
.hsub = { 1, 1 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_RGB_565, COGL_PIXEL_FORMAT_A_8 },
},
{ /* BGR565_A8 */
.n_planes = 2,
.bpp = { 2, 1 },
.hsub = { 1, 1 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_RGB_565, COGL_PIXEL_FORMAT_A_8 },
},
/* 2 plane YUV */
{ /* NV12 */
.n_planes = 2,
.bpp = { 1, 2 },
.hsub = { 1, 2 },
.vsub = { 1, 2 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_RG_88 },
},
{ /* NV21 */
.n_planes = 2,
.bpp = { 1, 2 },
.hsub = { 1, 2 },
.vsub = { 1, 2 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_RG_88 },
},
{ /* NV16 */
.n_planes = 2,
.bpp = { 1, 2 },
.hsub = { 1, 2 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_RG_88 },
},
{ /* NV61 */
.n_planes = 2,
.bpp = { 1, 2 },
.hsub = { 1, 2 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_RG_88 },
},
{ /* NV24 */
.n_planes = 2,
.bpp = { 1, 2 },
.hsub = { 1, 1 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_RG_88 },
},
{ /* NV42 */
.n_planes = 2,
.bpp = { 1, 2 },
.hsub = { 1, 1 },
.vsub = { 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_RG_88 },
},
/* 3 plane YUV */
{ /* YUV410 */
.n_planes = 3,
.bpp = { 1, 1, 1 },
.hsub = { 1, 4, 4 },
.vsub = { 1, 4, 4 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8 },
},
{ /* YVU410 */
.n_planes = 3,
.bpp = { 1, 1, 1 },
.hsub = { 1, 4, 4 },
.vsub = { 1, 4, 4 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8 },
},
{ /* YUV411 */
.n_planes = 3,
.bpp = { 1, 1, 1 },
.hsub = { 1, 4, 4 },
.vsub = { 1, 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8 },
},
{ /* YVU411 */
.n_planes = 3,
.bpp = { 1, 1, 1 },
.hsub = { 1, 4, 4 },
.vsub = { 1, 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8 },
},
{ /* YUV420 */
.n_planes = 3,
.bpp = { 1, 1, 1 },
.hsub = { 1, 2, 2 },
.vsub = { 1, 2, 2 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8 },
},
{ /* YVU420 */
.n_planes = 3,
.bpp = { 1, 1, 1 },
.hsub = { 1, 2, 2 },
.vsub = { 1, 2, 2 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8 },
},
{ /* YUV422 */
.n_planes = 3,
.bpp = { 1, 1, 1 },
.hsub = { 1, 2, 2 },
.vsub = { 1, 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8 },
},
{ /* YVU422 */
.n_planes = 3,
.bpp = { 1, 1, 1 },
.hsub = { 1, 2, 2 },
.vsub = { 1, 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8 },
},
{ /* YUV444 */
.n_planes = 3,
.bpp = { 1, 1, 1 },
.hsub = { 1, 1, 1 },
.vsub = { 1, 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8 },
},
{ /* YVU444 */
.n_planes = 3,
.bpp = { 1, 1, 1 },
.hsub = { 1, 1, 1 },
.vsub = { 1, 1, 1 },
.subformats = { COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8, COGL_PIXEL_FORMAT_G_8 },
},
};
void
meta_multi_texture_format_get_bytes_per_pixel (MetaMultiTextureFormat format,
uint8_t *bpp_out)
{
size_t i;
g_return_if_fail (format < G_N_ELEMENTS (multi_format_table));
for (i = 0; i < multi_format_table[format].n_planes; i++)
bpp_out[i] = multi_format_table[format].bpp[i];
}
int
meta_multi_texture_format_get_n_planes (MetaMultiTextureFormat format)
{
g_return_val_if_fail (format < G_N_ELEMENTS (multi_format_table), 0);
return multi_format_table[format].n_planes;
}
void
meta_multi_texture_format_get_subsampling_factors (MetaMultiTextureFormat format,
uint8_t *horizontal_factors,
uint8_t *vertical_factors)
{
size_t i;
g_return_if_fail (format < G_N_ELEMENTS (multi_format_table));
for (i = 0; i < multi_format_table[format].n_planes; i++)
{
horizontal_factors[i] = multi_format_table[format].hsub[i];
vertical_factors[i] = multi_format_table[format].vsub[i];
}
}
void
meta_multi_texture_format_get_subformats (MetaMultiTextureFormat format,
CoglPixelFormat *formats_out)
{
size_t i;
g_return_if_fail (format < G_N_ELEMENTS (multi_format_table));
for (i = 0; i < multi_format_table[format].n_planes; i++)
formats_out[i] = multi_format_table[format].subformats[i];
}

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src/compositor/meta-multi-texture.c Normal file
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/*
* Authored By Niels De Graef <niels.degraef@barco.com>
*
* Copyright (C) 2018 Barco NV
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:meta-multi-texture
* @title: MetaMultiTexture
* @short_description: A texture that can have multiple planes.
*
* #MetaMultiTexture allows one to deal with non-trivial formats that
* have multiple planes, requires subsampling and/or aren't in RGB. A common
* example of this are decoded video frames, which often use something in the
* YUV colorspace, combined with subsampling.
*
* The basic idea of a #MetaMultiTexture is the following:
* - Each plane is represented by a separate #CoglTexture. That means that you
* should add each of these planes as a layer to your CoglPipeline.
* - When dealing with a color space that is not RGB, you can ask the
* #MetaMultiTexture to create a shader for you that does the conversion
* in the GPU.
* - In case you need to deal with memory access in a format with subsampling,
* you can use meta_multi_texture_get_width() and its analogous version
* for the height to get the correct size of the texture.
*/
#include "meta/meta-multi-texture.h"
#include "meta/meta-enum-types.h"
struct _MetaMultiTexture
{
GObject parent_instance;
MetaMultiTextureFormat format;
guint n_planes;
CoglTexture **planes;
};
G_DEFINE_TYPE (MetaMultiTexture, meta_multi_texture, G_TYPE_OBJECT);
/**
* meta_multi_texture_get_format:
* @self: a #MetaMultiTexture
*
* Returns the #MetaMultiTextureFormat that is used by this texture.
*
* Returns: The texture format that is used by this #MetaMultiTexture.
*/
MetaMultiTextureFormat
meta_multi_texture_get_format (MetaMultiTexture *self)
{
g_return_val_if_fail (META_IS_MULTI_TEXTURE (self), META_MULTI_TEXTURE_FORMAT_SIMPLE);
return self->format;
}
/**
* meta_multi_texture_is_simple:
* @self: a #MetaMultiTexture
*
* A small function that checks whether the given multi texture uses a "simple"
* format, i.e. one that can be represented by a #CoglPixelFormat.
*
* Returns: Whether the texture format is #META_MULTI_TEXTURE_FORMAT_SIMPLE
*/
gboolean
meta_multi_texture_is_simple (MetaMultiTexture *self)
{
g_return_val_if_fail (META_IS_MULTI_TEXTURE (self), FALSE);
return self->format == META_MULTI_TEXTURE_FORMAT_SIMPLE;
}
/**
* meta_multi_texture_get_n_planes:
* @self: a #MetaMultiTexture
*
* Returns the number of planes for this texture. Note that this is entirely
* dependent on the #CoglPixelFormat that is used. For example, simple RGB
* textures will have a single plane, while some more convoluted formats like
* NV12 and YUV 4:4:4 can have 2 and 3 planes respectively.
*
* Returns: The number of planes in this #MetaMultiTexture.
*/
guint
meta_multi_texture_get_n_planes (MetaMultiTexture *self)
{
g_return_val_if_fail (META_IS_MULTI_TEXTURE (self), 0);
return self->n_planes;
}
/**
* meta_multi_texture_get_plane:
* @self: a #MetaMultiTexture
* @index: the index of the plane
*
* Returns the n'th plane of the #MetaMultiTexture. Note that it's a programming
* error to use with an index larger than meta_multi_texture_get_n_planes().
*
* Returns: (transfer none): The plane at the given @index.
*/
CoglTexture *
meta_multi_texture_get_plane (MetaMultiTexture *self, guint index)
{
g_return_val_if_fail (META_IS_MULTI_TEXTURE (self), 0);
g_return_val_if_fail (index < self->n_planes, NULL);
return self->planes[index];
}
/**
* meta_multi_texture_get_width:
* @self: a #MetaMultiTexture
*
* Returns the width of the #MetaMultiTexture. Prefer this over calling
* cogl_texture_get_width() on one of the textures, as that might give a
* different size when dealing with subsampling.
*
* Returns: The width of the texture.
*/
int
meta_multi_texture_get_width (MetaMultiTexture *self)
{
g_return_val_if_fail (META_IS_MULTI_TEXTURE (self), 0);
return cogl_texture_get_width (self->planes[0]);
}
/**
* meta_multi_texture_get_height:
* @self: a #MetaMultiTexture
*
* Returns the height of the #MetaMultiTexture. Prefer this over calling
* cogl_texture_get_height() on one of the textures, as that might give a
* different size when dealing with subsampling.
*
* Returns: The height of the texture.
*/
int
meta_multi_texture_get_height (MetaMultiTexture *self)
{
g_return_val_if_fail (META_IS_MULTI_TEXTURE (self), 0);
return cogl_texture_get_height (self->planes[0]);
}
static void
meta_multi_texture_finalize (GObject *object)
{
MetaMultiTexture *self = META_MULTI_TEXTURE (object);
int i;
for (i = 0; i < self->n_planes; i++)
cogl_clear_object (&self->planes[i]);
g_free (self->planes);
G_OBJECT_CLASS (meta_multi_texture_parent_class)->finalize (object);
}
static void
meta_multi_texture_init (MetaMultiTexture *self)
{
}
static void
meta_multi_texture_class_init (MetaMultiTextureClass *klass)
{
GObjectClass *gobj_class = G_OBJECT_CLASS (klass);
gobj_class->finalize = meta_multi_texture_finalize;
}
/**
* meta_multi_texture_new:
* @format: The format of the #MetaMultiTexture
* @planes: (transfer full): The actual planes of the texture
* @n_planes: The number of planes
*
* Creates a #MetaMultiTexture with the given @format. Each of the
* #CoglTexture<!-- -->s represents a plane.
*
* Returns: (transfer full): A new #MetaMultiTexture. Use g_object_unref() when
* you're done with it.
*/
MetaMultiTexture *
meta_multi_texture_new (MetaMultiTextureFormat format,
CoglTexture **planes,
guint n_planes)
{
MetaMultiTexture *self;
g_return_val_if_fail (planes != NULL, NULL);
g_return_val_if_fail (n_planes > 0, NULL);
self = g_object_new (META_TYPE_MULTI_TEXTURE, NULL);
self->format = format;
self->n_planes = n_planes;
self->planes = planes;
return self;
}
/**
* meta_multi_texture_new_simple:
* @plane: (transfer full): The single plane of the texture
*
* Creates a #MetaMultiTexture for a "simple" texture, i.e. with only one
* plane, in a format that can be represented using #CoglPixelFormat.
*
* Returns: (transfer full): A new #MetaMultiTexture. Use g_object_unref() when
* you're done with it.
*/
MetaMultiTexture *
meta_multi_texture_new_simple (CoglTexture *plane)
{
MetaMultiTexture *self;
g_return_val_if_fail (plane != NULL, NULL);
self = g_object_new (META_TYPE_MULTI_TEXTURE, NULL);
self->format = META_MULTI_TEXTURE_FORMAT_SIMPLE;
self->n_planes = 1;
self->planes = g_malloc (sizeof (CoglTexture *));
self->planes[0] = plane;
return self;
}
/**
* meta_multi_texture_to_string:
* @self: a #MetaMultiTexture
*
* Returns a string representation of @self, useful for debugging purposes.
*
* Returns: (transfer full): A string representation of @self. Use g_free() when
* done with it.
*/
char *
meta_multi_texture_to_string (MetaMultiTexture *self)
{
g_autoptr(GString) str = NULL;
g_autofree char *format_str = NULL;
g_autofree char *ret = NULL;
uint8_t i;
str = g_string_new ("");
g_string_append_printf (str, "MetaMultiTexture (%p) {\n", self);
format_str = g_enum_to_string (META_TYPE_MULTI_TEXTURE_FORMAT, self->format);
g_string_append_printf (str, " .format = %s;\n", format_str);
g_string_append_printf (str, " .n_planes = %u;\n", self->n_planes);
g_string_append (str, " .planes = {\n");
for (i = 0; i < self->n_planes; i++)
{
CoglTexture *plane = self->planes[i];
CoglPixelFormat plane_format = _cogl_texture_get_format (plane);
g_string_append_printf (str, " (%p) { .format = %s },\n",
plane,
cogl_pixel_format_to_string (plane_format));
}
g_string_append (str, " }\n");
g_string_append (str, "}");
ret = g_string_free (g_steal_pointer (&str), FALSE);
return g_steal_pointer (&ret);
}

2
src/meson.build
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@ -302,6 +302,8 @@ mutter_sources = [
'compositor/meta-feedback-actor-private.h',
'compositor/meta-module.c',
'compositor/meta-module.h',
'compositor/meta-multi-texture.c',
'compositor/meta-multi-texture-format.c',
'compositor/meta-plugin.c',
'compositor/meta-plugin-manager.c',
'compositor/meta-plugin-manager.h',

2
src/meta/meson.build
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@ -20,6 +20,8 @@ mutter_public_headers = [
'meta-inhibit-shortcuts-dialog.h',
'meta-launch-context.h',
'meta-monitor-manager.h',
'meta-multi-texture.h',
'meta-multi-texture-format.h',
'meta-plugin.h',
'meta-remote-access-controller.h',
'meta-selection.h',

129
src/meta/meta-multi-texture-format.h Normal file
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@ -0,0 +1,129 @@
/*
* Authored By Niels De Graef <niels.degraef@barco.com>
*
* Copyright (C) 2018 Barco NV
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef __META_MULTI_TEXTURE_FORMAT_H__
#define __META_MULTI_TEXTURE_FORMAT_H__
#include <glib.h>
#include <cogl/cogl.h>
#include <meta/common.h>
G_BEGIN_DECLS
/**
* MetaMultiTextureFormat:
* @META_MULTI_TEXTURE_FORMAT_FORMAT_SIMPLE: Any format supported by Cogl (see #CoglPixelFormat)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YUYV: YUYV, 32 bits, 16 bpc (Y), 8 bpc (U & V)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YVYU: YVYU, 32 bits, 16 bpc (Y), 8 bpc (V & U)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_UYVY: UYVY, 32 bits, 16 bpc (Y), 8 bpc (V & U)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_VYUY: VYUV, 32 bits, 16 bpc (Y), 8 bpc (V & U)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_AYUV: AYUV, 32 bits, 8 bpc
* @META_MULTI_TEXTURE_FORMAT_FORMAT_XRGB8888_A8: 2 planes: 1 RGB-plane (64-bit), 1 alpha-plane
* @META_MULTI_TEXTURE_FORMAT_FORMAT_XBGR8888_A8: 2 planes: 1 BGR-plane (64-bit), 1 alpha-plane
* @META_MULTI_TEXTURE_FORMAT_FORMAT_RGBX8888_A8: 2 planes: 1 RGB-plane (64-bit), 1 alpha-plane
* @META_MULTI_TEXTURE_FORMAT_FORMAT_BGRX8888_A8: 2 planes: 1 BGR-plane (64-bit), 1 alpha-plane
* @META_MULTI_TEXTURE_FORMAT_FORMAT_RGB888_A8: 2 planes: 1 RGB-plane (32-bit), 1 alpha-plane
* @META_MULTI_TEXTURE_FORMAT_FORMAT_BGR888_A8: 2 planes: 1 BGR-plane (32-bit), 1 alpha-plane
* @META_MULTI_TEXTURE_FORMAT_FORMAT_RGB565_A8: 2 planes: 1 RGB-plane (16-bit), 1 alpha-plane
* @META_MULTI_TEXTURE_FORMAT_FORMAT_BGR565_A8: 2 planes: 1 BGR-plane (16-bit), 1 alpha-plane
* @META_MULTI_TEXTURE_FORMAT_FORMAT_NV12: 2 planes: 1 Y-plane, 1 UV-plane (2x2 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_NV21: 2 planes: 1 Y-plane, 1 VU-plane (2x2 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_NV16: 2 planes: 1 Y-plane, 1 UV-plane (2x1 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_NV61: 2 planes: 1 Y-plane, 1 VU-plane (2x1 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_NV24: 2 planes: 1 Y-plane, 1 UV-plane
* @META_MULTI_TEXTURE_FORMAT_FORMAT_NV42: 2 planes: 1 Y-plane, 1 VU-plane
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YUV410: 3 planes: 1 Y-plane, 1 U-plane (4x4 subsampled), 1 V-plane (4x4 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YVU410: 3 planes: 1 Y-plane, 1 V-plane (4x4 subsampled), 1 U-plane (4x4 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YUV411: 3 planes: 1 Y-plane, 1 U-plane (4x1 subsampled), 1 V-plane (4x1 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YVU411: 3 planes: 1 Y-plane, 1 V-plane (4x1 subsampled), 1 U-plane (4x1 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YUV420: 3 planes: 1 Y-plane, 1 U-plane (2x2 subsampled), 1 V-plane (2x2 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YVU420: 3 planes: 1 Y-plane, 1 V-plane (2x2 subsampled), 1 U-plane (2x2 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YUV422: 3 planes: 1 Y-plane, 1 U-plane (2x1 subsampled), 1 V-plane (2x1 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YVU422: 3 planes: 1 Y-plane, 1 V-plane (2x1 subsampled), 1 U-plane (2x1 subsampled)
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YUV444: 3 planes: 1 Y-plane, 1 U-plane, 1 V-plane
* @META_MULTI_TEXTURE_FORMAT_FORMAT_YVU444: 3 planes: 1 Y-plane, 1 V-plane, 1 U-plane
*
* XXX write docs
*/
typedef enum _MetaMultiTextureFormat
{
META_MULTI_TEXTURE_FORMAT_SIMPLE,
/* The following list is somewhat synced with Linux's <drm_fourcc.h> */
/* Packed YUV */
META_MULTI_TEXTURE_FORMAT_YUYV,
META_MULTI_TEXTURE_FORMAT_YVYU,
META_MULTI_TEXTURE_FORMAT_UYVY,
META_MULTI_TEXTURE_FORMAT_VYUY,
META_MULTI_TEXTURE_FORMAT_AYUV,
/* 2 plane RGB + A */
META_MULTI_TEXTURE_FORMAT_XRGB8888_A8,
META_MULTI_TEXTURE_FORMAT_XBGR8888_A8,
META_MULTI_TEXTURE_FORMAT_RGBX8888_A8,
META_MULTI_TEXTURE_FORMAT_BGRX8888_A8,
META_MULTI_TEXTURE_FORMAT_RGB888_A8,
META_MULTI_TEXTURE_FORMAT_BGR888_A8,
META_MULTI_TEXTURE_FORMAT_RGB565_A8,
META_MULTI_TEXTURE_FORMAT_BGR565_A8,
/* 2 plane YUV */
META_MULTI_TEXTURE_FORMAT_NV12,
META_MULTI_TEXTURE_FORMAT_NV21,
META_MULTI_TEXTURE_FORMAT_NV16,
META_MULTI_TEXTURE_FORMAT_NV61,
META_MULTI_TEXTURE_FORMAT_NV24,
META_MULTI_TEXTURE_FORMAT_NV42,
/* 3 plane YUV */
META_MULTI_TEXTURE_FORMAT_YUV410,
META_MULTI_TEXTURE_FORMAT_YVU410,
META_MULTI_TEXTURE_FORMAT_YUV411,
META_MULTI_TEXTURE_FORMAT_YVU411,
META_MULTI_TEXTURE_FORMAT_YUV420,
META_MULTI_TEXTURE_FORMAT_YVU420,
META_MULTI_TEXTURE_FORMAT_YUV422,
META_MULTI_TEXTURE_FORMAT_YVU422,
META_MULTI_TEXTURE_FORMAT_YUV444,
META_MULTI_TEXTURE_FORMAT_YVU444
} MetaMultiTextureFormat;
META_EXPORT
void meta_multi_texture_format_get_bytes_per_pixel (MetaMultiTextureFormat format,
uint8_t *bpp_out);
META_EXPORT
int meta_multi_texture_format_get_n_planes (MetaMultiTextureFormat format);
META_EXPORT
void meta_multi_texture_format_get_subsampling_factors (MetaMultiTextureFormat format,
uint8_t *horizontal_factors,
uint8_t *vertical_factors);
META_EXPORT
void meta_multi_texture_format_get_subformats (MetaMultiTextureFormat format,
CoglPixelFormat *formats_out);
G_END_DECLS
#endif

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/*
* Authored By Niels De Graef <niels.degraef@barco.com>
*
* Copyright (C) 2018 Barco NV
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef __META_MULTI_TEXTURE_H__
#define __META_MULTI_TEXTURE_H__
#include <glib-object.h>
#include <cogl/cogl.h>
#include <meta/common.h>
#include "meta/meta-multi-texture-format.h"
G_BEGIN_DECLS
#define META_TYPE_MULTI_TEXTURE (meta_multi_texture_get_type ())
META_EXPORT
G_DECLARE_FINAL_TYPE (MetaMultiTexture, meta_multi_texture,
META, MULTI_TEXTURE,
GObject)
META_EXPORT
MetaMultiTexture * meta_multi_texture_new (MetaMultiTextureFormat format,
CoglTexture **planes,
guint n_planes);
META_EXPORT
MetaMultiTexture * meta_multi_texture_new_simple (CoglTexture *plane);
META_EXPORT
MetaMultiTextureFormat meta_multi_texture_get_format (MetaMultiTexture *self);
META_EXPORT
gboolean meta_multi_texture_is_simple (MetaMultiTexture *self);
META_EXPORT
guint meta_multi_texture_get_n_planes (MetaMultiTexture *self);
META_EXPORT
CoglTexture * meta_multi_texture_get_plane (MetaMultiTexture *self,
guint index);
META_EXPORT
int meta_multi_texture_get_width (MetaMultiTexture *self);
META_EXPORT
int meta_multi_texture_get_height (MetaMultiTexture *self);
META_EXPORT
char * meta_multi_texture_to_string (MetaMultiTexture *self);
G_END_DECLS
#endif