1 /* 2 * Copyright (c) 2016 Laurent Pinchart <laurent.pinchart@ideasonboard.com> 3 * 4 * Permission to use, copy, modify, distribute, and sell this software and its 5 * documentation for any purpose is hereby granted without fee, provided that 6 * the above copyright notice appear in all copies and that both that copyright 7 * notice and this permission notice appear in supporting documentation, and 8 * that the name of the copyright holders not be used in advertising or 9 * publicity pertaining to distribution of the software without specific, 10 * written prior permission. The copyright holders make no representations 11 * about the suitability of this software for any purpose. It is provided "as 12 * is" without express or implied warranty. 13 * 14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 20 * OF THIS SOFTWARE. 21 */ 22 #ifndef __DRM_FOURCC_H__ 23 #define __DRM_FOURCC_H__ 24 25 #include <linux/types.h> 26 #include <uapi/drm/drm_fourcc.h> 27 28 /** 29 * struct drm_format_info - information about a DRM format 30 * @format: 4CC format identifier (DRM_FORMAT_*) 31 * @depth: Color depth (number of bits per pixel excluding padding bits), 32 * valid for a subset of RGB formats only. This is a legacy field, do not 33 * use in new code and set to 0 for new formats. 34 * @num_planes: Number of color planes (1 to 3) 35 * @cpp: Number of bytes per pixel (per plane) 36 * @hsub: Horizontal chroma subsampling factor 37 * @vsub: Vertical chroma subsampling factor 38 */ 39 struct drm_format_info { 40 u32 format; 41 u8 depth; 42 u8 num_planes; 43 u8 cpp[3]; 44 u8 hsub; 45 u8 vsub; 46 }; 47 48 const struct drm_format_info *drm_format_info(u32 format); 49 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth); 50 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, int *bpp); 51 int drm_format_num_planes(uint32_t format); 52 int drm_format_plane_cpp(uint32_t format, int plane); 53 int drm_format_horz_chroma_subsampling(uint32_t format); 54 int drm_format_vert_chroma_subsampling(uint32_t format); 55 int drm_format_plane_width(int width, uint32_t format, int plane); 56 int drm_format_plane_height(int height, uint32_t format, int plane); 57 char *drm_get_format_name(uint32_t format) __malloc; 58 59 #endif /* __DRM_FOURCC_H__ */ 60