/* meta-cogl-drm-formats.h
 *
 * Copyright (C) 2020 Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
 * Copyright (C) 2023 Collabora Ltd.
 *
 * 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.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 *
 */

#ifndef META_COGL_DRM_FORMATS_H
#define META_COGL_DRM_FORMATS_H

#include <drm_fourcc.h>

#include "cogl/cogl.h"
#include "meta/meta-multi-texture-format.h"

G_BEGIN_DECLS

typedef struct _CoglDrmFormatMap
{
  uint32_t drm_format;
  CoglPixelFormat cogl_format;
  MetaMultiTextureFormat multi_texture_format;
} CoglDrmFormatMap;

static const CoglDrmFormatMap meta_cogl_drm_format_map[] = {
/* DRM formats are defined as little-endian, not machine endian. */
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
  { DRM_FORMAT_RGB565, COGL_PIXEL_FORMAT_RGB_565, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_RGBX8888, COGL_PIXEL_FORMAT_XBGR_8888, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_RGBA8888, COGL_PIXEL_FORMAT_ABGR_8888_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_BGRX8888, COGL_PIXEL_FORMAT_XRGB_8888, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_BGRA8888, COGL_PIXEL_FORMAT_ARGB_8888_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_XRGB8888, COGL_PIXEL_FORMAT_BGRX_8888, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_ARGB8888, COGL_PIXEL_FORMAT_BGRA_8888_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_XBGR8888, COGL_PIXEL_FORMAT_RGBX_8888, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_ABGR8888, COGL_PIXEL_FORMAT_RGBA_8888_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_XRGB2101010, COGL_PIXEL_FORMAT_XRGB_2101010, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_ARGB2101010, COGL_PIXEL_FORMAT_ARGB_2101010_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_XBGR2101010, COGL_PIXEL_FORMAT_XBGR_2101010, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_ABGR2101010, COGL_PIXEL_FORMAT_ABGR_2101010_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_XRGB16161616F, COGL_PIXEL_FORMAT_BGRX_FP_16161616, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_ARGB16161616F, COGL_PIXEL_FORMAT_BGRA_FP_16161616_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_XBGR16161616F, COGL_PIXEL_FORMAT_RGBX_FP_16161616, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_ABGR16161616F, COGL_PIXEL_FORMAT_RGBA_FP_16161616_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
#elif G_BYTE_ORDER == G_BIG_ENDIAN
  { DRM_FORMAT_RGBX8888, COGL_PIXEL_FORMAT_RGBX_8888, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_RGBA8888, COGL_PIXEL_FORMAT_RGBA_8888_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_BGRX8888, COGL_PIXEL_FORMAT_BGRX_8888, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_BGRA8888, COGL_PIXEL_FORMAT_BGRA_8888_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_XRGB8888, COGL_PIXEL_FORMAT_XRGB_8888, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_ARGB8888, COGL_PIXEL_FORMAT_ARGB_8888_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_XBGR8888, COGL_PIXEL_FORMAT_XBGR_8888, META_MULTI_TEXTURE_FORMAT_SIMPLE },
  { DRM_FORMAT_ABGR8888, COGL_PIXEL_FORMAT_ABGR_8888_PRE, META_MULTI_TEXTURE_FORMAT_SIMPLE },
#else
#error "unexpected G_BYTE_ORDER"
#endif
};

gboolean meta_cogl_pixel_format_from_drm_format (uint32_t                drm_format,
                                                 CoglPixelFormat        *out_format,
                                                 MetaMultiTextureFormat *out_multi_texture_format);

G_END_DECLS

#endif /* META_COGL_DRM_FORMATS_H */