diff options
| author | Paul Kocialkowski <paul.kocialkowski@bootlin.com> | 2018-12-05 16:14:59 +0100 |
|---|---|---|
| committer | Paul Kocialkowski <paul.kocialkowski@bootlin.com> | 2019-02-26 09:45:54 +0100 |
| commit | 34a21dfb6a02c3becd0639b30ec43ad42bb493dd (patch) | |
| tree | e8c83c09cb4c07b1828279aece7aaeee823baa0c | |
| parent | 6e227181ab57e43f058edd76368b17d8c235aeb0 (diff) | |
lib/igt_fb: Add a helper to retreive the plane bpp for a given format
The format bpp for a given plane is stored in the static format_desc
structure and is not accessible to tests, which is inconvenient to
get the minimum stride for a format when testing various strides.
Add a simple helper to expose the information.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Maxime Ripard <maxime.ripard@bootlin.com>
| -rw-r--r-- | lib/igt_fb.c | 16 | ||||
| -rw-r--r-- | lib/igt_fb.h | 1 |
2 files changed, 17 insertions, 0 deletions
diff --git a/lib/igt_fb.c b/lib/igt_fb.c index f19892490..48f7921e9 100644 --- a/lib/igt_fb.c +++ b/lib/igt_fb.c @@ -2727,3 +2727,19 @@ bool igt_format_is_yuv(uint32_t drm_format) return false; } } + +/** + * igt_format_plane_bpp: + * @drm_format: drm fourcc + * @plane: format plane index + * + * This functions returns the number of bits per pixel for the given @plane + * index of the @drm_format. + */ +int igt_format_plane_bpp(uint32_t drm_format, int plane) +{ + const struct format_desc_struct *format = + lookup_drm_format(drm_format); + + return format->plane_bpp[plane]; +} diff --git a/lib/igt_fb.h b/lib/igt_fb.h index 232370bd4..0bac83c3b 100644 --- a/lib/igt_fb.h +++ b/lib/igt_fb.h @@ -181,6 +181,7 @@ uint32_t igt_drm_format_to_bpp(uint32_t drm_format); const char *igt_format_str(uint32_t drm_format); bool igt_fb_supported_format(uint32_t drm_format); bool igt_format_is_yuv(uint32_t drm_format); +int igt_format_plane_bpp(uint32_t drm_format, int plane); #endif /* __IGT_FB_H__ */ |