/* * Copyright (c) 2016 Laurent Pinchart * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that copyright * notice and this permission notice appear in supporting documentation, and * that the name of the copyright holders not be used in advertising or * publicity pertaining to distribution of the software without specific, * written prior permission. The copyright holders make no representations * about the suitability of this software for any purpose. It is provided "as * is" without express or implied warranty. * * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE * OF THIS SOFTWARE. */ #ifndef __DRM_FOURCC_H__ #define __DRM_FOURCC_H__ #include #include /* * DRM formats are little endian. Define host endian variants for the * most common formats here, to reduce the #ifdefs needed in drivers. * * Note that the DRM_FORMAT_BIG_ENDIAN flag should only be used in * case the format can't be specified otherwise, so we don't end up * with two values describing the same format. */ #ifdef __BIG_ENDIAN # define DRM_FORMAT_HOST_XRGB1555 (DRM_FORMAT_XRGB1555 | \ DRM_FORMAT_BIG_ENDIAN) # define DRM_FORMAT_HOST_RGB565 (DRM_FORMAT_RGB565 | \ DRM_FORMAT_BIG_ENDIAN) # define DRM_FORMAT_HOST_XRGB8888 DRM_FORMAT_BGRX8888 # define DRM_FORMAT_HOST_ARGB8888 DRM_FORMAT_BGRA8888 #else # define DRM_FORMAT_HOST_XRGB1555 DRM_FORMAT_XRGB1555 # define DRM_FORMAT_HOST_RGB565 DRM_FORMAT_RGB565 # define DRM_FORMAT_HOST_XRGB8888 DRM_FORMAT_XRGB8888 # define DRM_FORMAT_HOST_ARGB8888 DRM_FORMAT_ARGB8888 #endif struct drm_device; struct drm_mode_fb_cmd2; /** * struct drm_format_info - information about a DRM format * @format: 4CC format identifier (DRM_FORMAT_*) * @depth: Color depth (number of bits per pixel excluding padding bits), * valid for a subset of RGB formats only. This is a legacy field, do not * use in new code and set to 0 for new formats. * @num_planes: Number of color planes (1 to 3) * @cpp: Number of bytes per pixel (per plane) * @hsub: Horizontal chroma subsampling factor * @vsub: Vertical chroma subsampling factor */ struct drm_format_info { u32 format; u8 depth; u8 num_planes; u8 cpp[3]; u8 hsub; u8 vsub; }; /** * struct drm_format_name_buf - name of a DRM format * @str: string buffer containing the format name */ struct drm_format_name_buf { char str[32]; }; const struct drm_format_info *__drm_format_info(u32 format); const struct drm_format_info *drm_format_info(u32 format); const struct drm_format_info * drm_get_format_info(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd); uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth); int drm_format_num_planes(uint32_t format); int drm_format_plane_cpp(uint32_t format, int plane); int drm_format_horz_chroma_subsampling(uint32_t format); int drm_format_vert_chroma_subsampling(uint32_t format); int drm_format_plane_width(int width, uint32_t format, int plane); int drm_format_plane_height(int height, uint32_t format, int plane); const char *drm_get_format_name(uint32_t format, struct drm_format_name_buf *buf); #endif /* __DRM_FOURCC_H__ */