/*
 * Copyright © 2021 Benjamin Otte
 *
 * 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 2.1 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, see <http://www.gnu.org/licenses/>.
 *
 * Authors: Benjamin Otte <otte@gnome.org>
 */

#pragma once

#include "gdkenums.h"
#include "gdktypes.h"

#include <epoxy/gl.h>

G_BEGIN_DECLS

typedef enum {
  GDK_MEMORY_ALPHA_PREMULTIPLIED,
  GDK_MEMORY_ALPHA_STRAIGHT,
  GDK_MEMORY_ALPHA_OPAQUE
} GdkMemoryAlpha;

typedef enum {
  GDK_MEMORY_U8,
  GDK_MEMORY_U16,
  GDK_MEMORY_FLOAT16,
  GDK_MEMORY_FLOAT32
} GdkMemoryDepth;

gsize                   gdk_memory_format_alignment         (GdkMemoryFormat             format) G_GNUC_CONST;
GdkMemoryAlpha          gdk_memory_format_alpha             (GdkMemoryFormat             format) G_GNUC_CONST;
gsize                   gdk_memory_format_bytes_per_pixel   (GdkMemoryFormat             format) G_GNUC_CONST;
GdkMemoryDepth          gdk_memory_format_get_depth         (GdkMemoryFormat             format) G_GNUC_CONST;
GdkMemoryDepth          gdk_memory_depth_merge              (GdkMemoryDepth              depth1,
                                                             GdkMemoryDepth              depth2) G_GNUC_CONST;
GdkMemoryFormat         gdk_memory_depth_get_alpha_format   (GdkMemoryDepth              depth) G_GNUC_CONST;
gboolean                gdk_memory_format_gl_format         (GdkMemoryFormat             format,
                                                             GdkGLContext               *context,
                                                             guint                      *out_internal_format,
                                                             guint                      *out_format,
                                                             guint                      *out_type,
                                                             GLint                       out_gizzle[4]);

void                    gdk_memory_convert                  (guchar                     *dest_data,
                                                             gsize                       dest_stride,
                                                             GdkMemoryFormat             dest_format,
                                                             const guchar               *src_data,
                                                             gsize                       src_stride,
                                                             GdkMemoryFormat             src_format,
                                                             gsize                       width,
                                                             gsize                       height);


G_END_DECLS