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weston/libweston/pixel-formats.c
Pekka Paalanen abd3f3c3ea pixel-formats: add RGBA bits and type fields 
These fields are necessary when looking for an EGLConfig matching a pixel
format, but the configs do not expose a native visual id. Such happens on the
EGL surfaceless platform where one does not actually care about the exact pixel
format, one just cares it has the right number of bits for each channel and the
right component type.

FP16 formats are coming, so this paves way for them too, allowing them to be
described.

The FIXED/FLOAT terminology comes from EGL_EXT_pixel_format_float.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2019-10-04 12:17:18 +03:00

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/*
* Copyright © 2016, 2019 Collabora, Ltd.
* Copyright (c) 2018 DisplayLink (UK) 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 <string.h>
#include <drm_fourcc.h>
#include <wayland-client-protocol.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
#define DRM_FORMAT(f) .format = DRM_FORMAT_ ## f, .drm_format_name = #f
#define BITS_RGBA_FIXED(r_, g_, b_, a_) \
.bits.r = r_, \
.bits.g = g_, \
.bits.b = b_, \
.bits.a = a_, \
.component_type = PIXEL_COMPONENT_TYPE_FIXED
#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[] = {
{
DRM_FORMAT(XRGB4444),
BITS_RGBA_FIXED(4, 4, 4, 0),
},
{
DRM_FORMAT(ARGB4444),
BITS_RGBA_FIXED(4, 4, 4, 4),
.opaque_substitute = DRM_FORMAT_XRGB4444,
},
{
DRM_FORMAT(XBGR4444),
BITS_RGBA_FIXED(4, 4, 4, 0),
},
{
DRM_FORMAT(ABGR4444),
BITS_RGBA_FIXED(4, 4, 4, 4),
.opaque_substitute = DRM_FORMAT_XBGR4444,
},
{
DRM_FORMAT(RGBX4444),
BITS_RGBA_FIXED(4, 4, 4, 0),
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_SHORT_4_4_4_4),
#endif
},
{
DRM_FORMAT(RGBA4444),
BITS_RGBA_FIXED(4, 4, 4, 4),
.opaque_substitute = DRM_FORMAT_RGBX4444,
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_SHORT_4_4_4_4),
#endif
},
{
DRM_FORMAT(BGRX4444),
BITS_RGBA_FIXED(4, 4, 4, 0),
},
{
DRM_FORMAT(BGRA4444),
BITS_RGBA_FIXED(4, 4, 4, 4),
.opaque_substitute = DRM_FORMAT_BGRX4444,
},
{
DRM_FORMAT(XRGB1555),
BITS_RGBA_FIXED(5, 5, 5, 0),
.depth = 15,
.bpp = 16,
},
{
DRM_FORMAT(ARGB1555),
BITS_RGBA_FIXED(5, 5, 5, 1),
.opaque_substitute = DRM_FORMAT_XRGB1555,
},
{
DRM_FORMAT(XBGR1555),
BITS_RGBA_FIXED(5, 5, 5, 0),
},
{
DRM_FORMAT(ABGR1555),
BITS_RGBA_FIXED(5, 5, 5, 1),
.opaque_substitute = DRM_FORMAT_XBGR1555,
},
{
DRM_FORMAT(RGBX5551),
BITS_RGBA_FIXED(5, 5, 5, 0),
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_SHORT_5_5_5_1),
#endif
},
{
DRM_FORMAT(RGBA5551),
BITS_RGBA_FIXED(5, 5, 5, 1),
.opaque_substitute = DRM_FORMAT_RGBX5551,
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_SHORT_5_5_5_1),
#endif
},
{
DRM_FORMAT(BGRX5551),
BITS_RGBA_FIXED(5, 5, 5, 0),
},
{
DRM_FORMAT(BGRA5551),
BITS_RGBA_FIXED(5, 5, 5, 1),
.opaque_substitute = DRM_FORMAT_BGRX5551,
},
{
DRM_FORMAT(RGB565),
BITS_RGBA_FIXED(5, 6, 5, 0),
.depth = 16,
.bpp = 16,
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGB),
GL_TYPE(GL_UNSIGNED_SHORT_5_6_5),
#endif
},
{
DRM_FORMAT(BGR565),
BITS_RGBA_FIXED(5, 6, 5, 0),
},
{
DRM_FORMAT(RGB888),
BITS_RGBA_FIXED(8, 8, 8, 0),
},
{
DRM_FORMAT(BGR888),
BITS_RGBA_FIXED(8, 8, 8, 0),
GL_FORMAT(GL_RGB),
GL_TYPE(GL_UNSIGNED_BYTE),
},
{
DRM_FORMAT(XRGB8888),
BITS_RGBA_FIXED(8, 8, 8, 0),
.depth = 24,
.bpp = 32,
GL_FORMAT(GL_BGRA_EXT),
GL_TYPE(GL_UNSIGNED_BYTE),
},
{
DRM_FORMAT(ARGB8888),
BITS_RGBA_FIXED(8, 8, 8, 8),
.opaque_substitute = DRM_FORMAT_XRGB8888,
.depth = 32,
.bpp = 32,
GL_FORMAT(GL_BGRA_EXT),
GL_TYPE(GL_UNSIGNED_BYTE),
},
{
DRM_FORMAT(XBGR8888),
BITS_RGBA_FIXED(8, 8, 8, 0),
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_BYTE),
},
{
DRM_FORMAT(ABGR8888),
BITS_RGBA_FIXED(8, 8, 8, 8),
.opaque_substitute = DRM_FORMAT_XBGR8888,
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_BYTE),
},
{
DRM_FORMAT(RGBX8888),
BITS_RGBA_FIXED(8, 8, 8, 0),
},
{
DRM_FORMAT(RGBA8888),
BITS_RGBA_FIXED(8, 8, 8, 8),
.opaque_substitute = DRM_FORMAT_RGBX8888,
},
{
DRM_FORMAT(BGRX8888),
BITS_RGBA_FIXED(8, 8, 8, 0),
},
{
DRM_FORMAT(BGRA8888),
BITS_RGBA_FIXED(8, 8, 8, 8),
.opaque_substitute = DRM_FORMAT_BGRX8888,
},
{
DRM_FORMAT(XRGB2101010),
BITS_RGBA_FIXED(10, 10, 10, 0),
.depth = 30,
.bpp = 32,
},
{
DRM_FORMAT(ARGB2101010),
BITS_RGBA_FIXED(10, 10, 10, 2),
.opaque_substitute = DRM_FORMAT_XRGB2101010,
},
{
DRM_FORMAT(XBGR2101010),
BITS_RGBA_FIXED(10, 10, 10, 0),
# if __BYTE_ORDER == __LITTLE_ENDIAN
GL_FORMAT(GL_RGBA),
GL_TYPE(GL_UNSIGNED_INT_2_10_10_10_REV_EXT),
#endif
},
{
DRM_FORMAT(ABGR2101010),
BITS_RGBA_FIXED(10, 10, 10, 2),
.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
},
{
DRM_FORMAT(RGBX1010102),
BITS_RGBA_FIXED(10, 10, 10, 0),
},
{
DRM_FORMAT(RGBA1010102),
BITS_RGBA_FIXED(10, 10, 10, 2),
.opaque_substitute = DRM_FORMAT_RGBX1010102,
},
{
DRM_FORMAT(BGRX1010102),
BITS_RGBA_FIXED(10, 10, 10, 0),
},
{
DRM_FORMAT(BGRA1010102),
BITS_RGBA_FIXED(10, 10, 10, 2),
.opaque_substitute = DRM_FORMAT_BGRX1010102,
},
{
DRM_FORMAT(YUYV),
SAMPLER_TYPE(EGL_TEXTURE_Y_XUXV_WL),
.num_planes = 1,
.hsub = 2,
},
{
DRM_FORMAT(YVYU),
SAMPLER_TYPE(EGL_TEXTURE_Y_XUXV_WL),
.num_planes = 1,
.chroma_order = ORDER_VU,
.hsub = 2,
},
{
DRM_FORMAT(UYVY),
SAMPLER_TYPE(EGL_TEXTURE_Y_XUXV_WL),
.num_planes = 1,
.luma_chroma_order = ORDER_CHROMA_LUMA,
.hsub = 2,
},
{
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,
},
{
DRM_FORMAT(NV12),
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
.hsub = 2,
.vsub = 2,
},
{
DRM_FORMAT(NV21),
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
.chroma_order = ORDER_VU,
.hsub = 2,
.vsub = 2,
},
{
DRM_FORMAT(NV16),
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
.hsub = 2,
.vsub = 1,
},
{
DRM_FORMAT(NV61),
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
.chroma_order = ORDER_VU,
.hsub = 2,
.vsub = 1,
},
{
DRM_FORMAT(NV24),
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
},
{
DRM_FORMAT(NV42),
SAMPLER_TYPE(EGL_TEXTURE_Y_UV_WL),
.num_planes = 2,
.chroma_order = ORDER_VU,
},
{
DRM_FORMAT(YUV410),
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.hsub = 4,
.vsub = 4,
},
{
DRM_FORMAT(YVU410),
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.chroma_order = ORDER_VU,
.hsub = 4,
.vsub = 4,
},
{
DRM_FORMAT(YUV411),
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.hsub = 4,
.vsub = 1,
},
{
DRM_FORMAT(YVU411),
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.chroma_order = ORDER_VU,
.hsub = 4,
.vsub = 1,
},
{
DRM_FORMAT(YUV420),
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.hsub = 2,
.vsub = 2,
},
{
DRM_FORMAT(YVU420),
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.chroma_order = ORDER_VU,
.hsub = 2,
.vsub = 2,
},
{
DRM_FORMAT(YUV422),
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.hsub = 2,
.vsub = 1,
},
{
DRM_FORMAT(YVU422),
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
.chroma_order = ORDER_VU,
.hsub = 2,
.vsub = 1,
},
{
DRM_FORMAT(YUV444),
SAMPLER_TYPE(EGL_TEXTURE_Y_U_V_WL),
.num_planes = 3,
},
{
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_shm(uint32_t format)
{
if (format == WL_SHM_FORMAT_XRGB8888)
return pixel_format_get_info(DRM_FORMAT_XRGB8888);
else if (format == WL_SHM_FORMAT_ARGB8888)
return pixel_format_get_info(DRM_FORMAT_ARGB8888);
else
return pixel_format_get_info(format);
}
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 const struct pixel_format_info *
pixel_format_get_info_by_drm_name(const char *drm_format_name)
{
const struct pixel_format_info *info;
unsigned int i;
for (i = 0; i < ARRAY_LENGTH(pixel_format_table); i++) {
info = &pixel_format_table[i];
if (strcasecmp(info->drm_format_name, drm_format_name) == 0)
return info;
}
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 const struct pixel_format_info *
pixel_format_get_info_by_opaque_substitute(uint32_t format)
{
unsigned int i;
for (i = 0; i < ARRAY_LENGTH(pixel_format_table); i++) {
if (pixel_format_table[i].opaque_substitute == format)
return &pixel_format_table[i];
}
return NULL;
}
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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