84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/*
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* Copyright (c) 2020 Andri Yngvason
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "pixels.h"
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#include <pixman.h>
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#include <wayland-client.h>
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#include <assert.h>
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#include <libdrm/drm_fourcc.h>
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#include <stdbool.h>
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enum wl_shm_format fourcc_to_wl_shm(uint32_t in)
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{
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assert(!(in & DRM_FORMAT_BIG_ENDIAN));
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switch (in) {
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case DRM_FORMAT_ARGB8888: return WL_SHM_FORMAT_ARGB8888;
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case DRM_FORMAT_XRGB8888: return WL_SHM_FORMAT_XRGB8888;
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}
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return in;
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}
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uint32_t fourcc_from_wl_shm(enum wl_shm_format in)
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{
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switch (in) {
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case WL_SHM_FORMAT_ARGB8888: return DRM_FORMAT_ARGB8888;
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case WL_SHM_FORMAT_XRGB8888: return DRM_FORMAT_XRGB8888;
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default:;
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}
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return in;
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}
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int pixel_size_from_fourcc(uint32_t fourcc)
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{
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switch (fourcc & ~DRM_FORMAT_BIG_ENDIAN) {
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case DRM_FORMAT_RGBA1010102:
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case DRM_FORMAT_RGBX1010102:
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case DRM_FORMAT_BGRA1010102:
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case DRM_FORMAT_BGRX1010102:
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case DRM_FORMAT_ARGB2101010:
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case DRM_FORMAT_XRGB2101010:
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case DRM_FORMAT_ABGR2101010:
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case DRM_FORMAT_XBGR2101010:
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case DRM_FORMAT_RGBA8888:
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case DRM_FORMAT_RGBX8888:
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case DRM_FORMAT_BGRA8888:
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case DRM_FORMAT_BGRX8888:
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case DRM_FORMAT_ARGB8888:
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case DRM_FORMAT_XRGB8888:
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case DRM_FORMAT_ABGR8888:
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case DRM_FORMAT_XBGR8888:
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return 4;
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case DRM_FORMAT_BGR888:
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case DRM_FORMAT_RGB888:
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return 3;
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case DRM_FORMAT_RGBA4444:
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case DRM_FORMAT_RGBX4444:
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case DRM_FORMAT_BGRA4444:
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case DRM_FORMAT_BGRX4444:
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case DRM_FORMAT_ARGB4444:
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case DRM_FORMAT_XRGB4444:
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case DRM_FORMAT_ABGR4444:
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case DRM_FORMAT_XBGR4444:
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return 2;
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}
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return 0;
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}
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