| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 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 | struct drm_device; |
| 29 | struct drm_mode_fb_cmd2; |
| 30 | |
| 31 | /** |
| 32 | * struct drm_format_info - information about a DRM format |
| 33 | * @format: 4CC format identifier (DRM_FORMAT_*) |
| 34 | * @depth: Color depth (number of bits per pixel excluding padding bits), |
| 35 | * valid for a subset of RGB formats only. This is a legacy field, do not |
| 36 | * use in new code and set to 0 for new formats. |
| 37 | * @num_planes: Number of color planes (1 to 3) |
| 38 | * @cpp: Number of bytes per pixel (per plane) |
| 39 | * @hsub: Horizontal chroma subsampling factor |
| 40 | * @vsub: Vertical chroma subsampling factor |
| 41 | * @has_alpha: Does the format embeds an alpha component? |
| 42 | * @is_yuv: Is it a YUV format? |
| 43 | */ |
| 44 | struct drm_format_info { |
| 45 | u32 format; |
| 46 | u8 depth; |
| 47 | u8 num_planes; |
| 48 | u8 cpp[3]; |
| 49 | u8 hsub; |
| 50 | u8 vsub; |
| 51 | bool has_alpha; |
| 52 | bool is_yuv; |
| 53 | }; |
| 54 | |
| 55 | /** |
| 56 | * struct drm_format_name_buf - name of a DRM format |
| 57 | * @str: string buffer containing the format name |
| 58 | */ |
| 59 | struct drm_format_name_buf { |
| 60 | char str[32]; |
| 61 | }; |
| 62 | |
| 63 | const struct drm_format_info *__drm_format_info(u32 format); |
| 64 | const struct drm_format_info *drm_format_info(u32 format); |
| 65 | const struct drm_format_info * |
| 66 | drm_get_format_info(struct drm_device *dev, |
| 67 | const struct drm_mode_fb_cmd2 *mode_cmd); |
| 68 | uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth); |
| 69 | int drm_format_num_planes(uint32_t format); |
| 70 | int drm_format_plane_cpp(uint32_t format, int plane); |
| 71 | int drm_format_horz_chroma_subsampling(uint32_t format); |
| 72 | int drm_format_vert_chroma_subsampling(uint32_t format); |
| 73 | int drm_format_plane_width(int width, uint32_t format, int plane); |
| 74 | int drm_format_plane_height(int height, uint32_t format, int plane); |
| 75 | const char *drm_get_format_name(uint32_t format, struct drm_format_name_buf *buf); |
| 76 | |
| 77 | #endif /* __DRM_FOURCC_H__ */ |