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weston/libweston/pixel-formats.c
Daniel Stone 903721a621 libweston: Add pixel-format helpers 
Rather than duplicating knowledge of pixel formats across several
components, create a custom central repository.

Signed-off-by: Daniel Stone <daniels@collabora.com>
[Pekka: fix include paths and two copy-pastas]
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2017-04-07 12:28:36 +03:00

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/*
* Copyright © 2016 Collabora, Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Author: Daniel Stone <daniels@collabora.com>
*/
#include "config.h"
#include <endian.h>
#include <inttypes.h>
#include <stdbool.h>
#include <unistd.h>
#include <drm_fourcc.h>
#include "helpers.h"
#include "wayland-util.h"
#include "pixel-formats.h"
#if ENABLE_EGL
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#define GL_FORMAT(fmt) .gl_format = (fmt)
#define GL_TYPE(type) .gl_type = (type)
#define SAMPLER_TYPE(type) .sampler_type = (type)
#else
#define GL_FORMAT(fmt) .gl_format = 0
#define GL_TYPE(type) .gl_type = 0
#define SAMPLER_TYPE(type) .sampler_type = 0
#endif
#include "weston-egl-ext.h"
/**
* Table of DRM formats supported by Weston; RGB, ARGB and YUV formats are
* supported. Indexed/greyscale formats, and formats not containing complete
* colour channels, are not supported.
*/
static const struct pixel_format_info pixel_format_table[] = {
{
.format = DRM_FORMAT_XRGB4444,
},
{
.format = DRM_FORMAT_ARGB4444,
.opaque_substitute = DRM_FORMAT_XRGB4444,
},
{
.format = DRM_FORMAT_XBGR4444,
},
{
.format = DRM_FORMAT_ABGR4444,
.opaque_substitute = DRM_FORMAT_XBGR4444,
},
{
.format = DRM_FORMAT_RGBX4444,
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_SHORT_4_4_4_4),
#endif
},
{
.format = DRM_FORMAT_RGBA4444,
.opaque_substitute = DRM_FORMAT_RGBX4444,
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_SHORT_4_4_4_4),
#endif
},
{
.format = DRM_FORMAT_BGRX4444,
},
{
.format = DRM_FORMAT_BGRA4444,
.opaque_substitute = DRM_FORMAT_BGRX4444,
},
{
.format = DRM_FORMAT_XRGB1555,
.depth = 15,
.bpp = 16,
},
{
.format = DRM_FORMAT_ARGB1555,
.opaque_substitute = DRM_FORMAT_XRGB1555,
},
{
.format = DRM_FORMAT_XBGR1555,
},
{
.format = DRM_FORMAT_ABGR1555,
.opaque_substitute = DRM_FORMAT_XBGR1555,
},
{
.format = DRM_FORMAT_RGBX5551,
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_SHORT_5_5_5_1),
#endif
},
{
.format = DRM_FORMAT_RGBA5551,
.opaque_substitute = DRM_FORMAT_RGBX5551,
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_SHORT_5_5_5_1),
#endif
},
{
.format = DRM_FORMAT_BGRX5551,
},
{
.format = DRM_FORMAT_BGRA5551,
.opaque_substitute = DRM_FORMAT_BGRX5551,
},
{
.format = DRM_FORMAT_RGB565,
.depth = 16,
.bpp = 16,
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGB),
GL_TYPE(GL_UNSIGNED_SHORT_5_6_5),
#endif
},
{
.format = DRM_FORMAT_BGR565,
},
{
.format = DRM_FORMAT_RGB888,
},
{
.format = DRM_FORMAT_BGR888,
GL_FORMAT(GL_RGB),
GL_TYPE(GL_UNSIGNED_BYTE),
},
{
.format = DRM_FORMAT_XRGB8888,
.depth = 24,
.bpp = 32,
GL_FORMAT(GL_BGRA_EXT),
GL_TYPE(GL_UNSIGNED_BYTE),
},
{
.format = DRM_FORMAT_ARGB8888,
.opaque_substitute = DRM_FORMAT_XRGB8888,
.depth = 32,
.bpp = 32,
GL_FORMAT(GL_BGRA_EXT),
GL_TYPE(GL_UNSIGNED_BYTE),
},
{
.format = DRM_FORMAT_XBGR8888,
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_BYTE),
},
{
.format = DRM_FORMAT_ABGR8888,
.opaque_substitute = DRM_FORMAT_XBGR8888,
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_BYTE),
},
{
.format = DRM_FORMAT_RGBX8888,
},
{
.format = DRM_FORMAT_RGBA8888,
.opaque_substitute = DRM_FORMAT_RGBX8888,
},
{
.format = DRM_FORMAT_BGRX8888,
},
{
.format = DRM_FORMAT_BGRA8888,
.opaque_substitute = DRM_FORMAT_BGRX8888,
},
{
.format = DRM_FORMAT_XRGB2101010,
.depth = 30,
.bpp = 32,
},
{
.format = DRM_FORMAT_ARGB2101010,
.opaque_substitute = DRM_FORMAT_XRGB2101010,
},
{
.format = DRM_FORMAT_XBGR2101010,
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_INT_2_10_10_10_REV_EXT),
#endif
},
{
.format = DRM_FORMAT_ABGR2101010,
.opaque_substitute = DRM_FORMAT_XBGR2101010,
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_INT_2_10_10_10_REV_EXT),
#endif
},
{
.format = DRM_FORMAT_RGBX1010102,
},
{
.format = DRM_FORMAT_RGBA1010102,
.opaque_substitute = DRM_FORMAT_RGBX1010102,
},
{
.format = DRM_FORMAT_BGRX1010102,
},
{
.format = DRM_FORMAT_BGRA1010102,
.opaque_substitute = DRM_FORMAT_BGRX1010102,
},
{
.format = DRM_FORMAT_YUYV,
SAMPLER_TYPE(EGL_TEXTURE_Y_XUXV_WL),
.num_planes = 1,
.hsub = 2,
},
{
.format = DRM_FORMAT_YVYU,
SAMPLER_TYPE(EGL_TEXTURE_Y_XUXV_WL),
.num_planes = 1,
.chroma_order = ORDER_VU,
.hsub = 2,
},
{
.format = DRM_FORMAT_UYVY,
SAMPLER_TYPE(EGL_TEXTURE_Y_XUXV_WL),
.num_planes = 1,
.luma_chroma_order = ORDER_CHROMA_LUMA,
.hsub = 2,
},
{
.format = DRM_FORMAT_VYUY,
SAMPLER_TYPE(EGL_TEXTURE_Y_XUXV_WL),
.num_planes = 1,
.luma_chroma_order = ORDER_CHROMA_LUMA,
.chroma_order = ORDER_VU,
.hsub = 2,
},
{
.format = DRM_FORMAT_NV12,
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
.hsub = 2,
.vsub = 2,
},
{
.format = DRM_FORMAT_NV21,
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
.chroma_order = ORDER_VU,
.hsub = 2,
.vsub = 2,
},
{
.format = DRM_FORMAT_NV16,
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
.hsub = 2,
.vsub = 1,
},
{
.format = DRM_FORMAT_NV61,
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
.chroma_order = ORDER_VU,
.hsub = 2,
.vsub = 1,
},
{
.format = DRM_FORMAT_NV24,
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
},
{
.format = DRM_FORMAT_NV42,
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
.chroma_order = ORDER_VU,
},
{
.format = DRM_FORMAT_YUV410,
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.hsub = 4,
.vsub = 4,
},
{
.format = DRM_FORMAT_YVU410,
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.chroma_order = ORDER_VU,
.hsub = 4,
.vsub = 4,
},
{
.format = DRM_FORMAT_YUV411,
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.hsub = 4,
.vsub = 1,
},
{
.format = DRM_FORMAT_YVU411,
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.chroma_order = ORDER_VU,
.hsub = 4,
.vsub = 1,
},
{
.format = DRM_FORMAT_YUV420,
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.hsub = 2,
.vsub = 2,
},
{
.format = DRM_FORMAT_YVU420,
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.chroma_order = ORDER_VU,
.hsub = 2,
.vsub = 2,
},
{
.format = DRM_FORMAT_YUV422,
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.hsub = 2,
.vsub = 1,
},
{
.format = DRM_FORMAT_YVU422,
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.chroma_order = ORDER_VU,
.hsub = 2,
.vsub = 1,
},
{
.format = DRM_FORMAT_YUV444,
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
},
{
.format = DRM_FORMAT_YVU444,
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.chroma_order = ORDER_VU,
},
};
WL_EXPORT const struct pixel_format_info *
pixel_format_get_info(uint32_t format)
{
unsigned int i;
for (i = 0; i < ARRAY_LENGTH(pixel_format_table); i++) {
if (pixel_format_table[i].format == format)
return &pixel_format_table[i];
}
return NULL;
}
WL_EXPORT unsigned int
pixel_format_get_plane_count(const struct pixel_format_info *info)
{
return info->num_planes ? info->num_planes : 1;
}
WL_EXPORT bool
pixel_format_is_opaque(const struct pixel_format_info *info)
{
return !info->opaque_substitute;
}
WL_EXPORT const struct pixel_format_info *
pixel_format_get_opaque_substitute(const struct pixel_format_info *info)
{
if (!info->opaque_substitute)
return info;
else
return pixel_format_get_info(info->opaque_substitute);
}
WL_EXPORT unsigned int
pixel_format_width_for_plane(const struct pixel_format_info *info,
unsigned int plane,
unsigned int width)
{
/* We don't support any formats where the first plane is subsampled. */
if (plane == 0 || !info->hsub)
return width;
return width / info->hsub;
}
WL_EXPORT unsigned int
pixel_format_height_for_plane(const struct pixel_format_info *info,
unsigned int plane,
unsigned int height)
{
/* We don't support any formats where the first plane is subsampled. */
if (plane == 0 || !info->vsub)
return height;
return height / info->vsub;
}
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