On Mon, 7 Mar 2022 21:53:17 +0100 Geert Uytterhoeven geert@linux-m68k.org wrote:
Add fourcc codes for color-indexed frame buffer formats with two, four, and sixteen colors. Add support for creating buffers using these formats.
Signed-off-by: Geert Uytterhoeven geert@linux-m68k.org
include/drm/drm_fourcc.h | 5 ++++- tests/modetest/buffers.c | 15 +++++++++++++++ tests/util/format.c | 3 +++ 3 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h index 957c7be29239c0a1..f8b18d28a71dabff 100644 --- a/include/drm/drm_fourcc.h +++ b/include/drm/drm_fourcc.h @@ -99,7 +99,10 @@ extern "C" { #define DRM_FORMAT_INVALID 0
/* color index */ -#define DRM_FORMAT_C8 fourcc_code('C', '8', ' ', ' ') /* [7:0] C */ +#define DRM_FORMAT_C1 fourcc_code('C', '1', ' ', ' ') /* [7:0] C0:C1:C2:C3:C4:C5:C6:C7 1:1:1:1:1:1:1:1 eight pixels/byte */ +#define DRM_FORMAT_C2 fourcc_code('C', '2', ' ', ' ') /* [7:0] C0:C1:C2:C3 2:2:2:2 four pixels/byte */ +#define DRM_FORMAT_C4 fourcc_code('C', '4', ' ', ' ') /* [7:0] C0:C1 4:4 two pixels/byte */ +#define DRM_FORMAT_C8 fourcc_code('C', '8', ' ', ' ') /* [7:0] C 8 one pixel/byte */
Hi Geert,
I believe updates to drm_fourcc.h in libdrm must be done with the specific process, please see
https://gitlab.freedesktop.org/mesa/drm/-/blob/main/include/drm/README
section "When and how to update these files".
Thanks, pq
/* 8 bpp Red */ #define DRM_FORMAT_R8 fourcc_code('R', '8', ' ', ' ') /* [7:0] R */ diff --git a/tests/modetest/buffers.c b/tests/modetest/buffers.c index 8a8d9e0143474378..af7f60b4fb4d09ad 100644 --- a/tests/modetest/buffers.c +++ b/tests/modetest/buffers.c @@ -135,6 +135,18 @@ bo_create(int fd, unsigned int format, int ret;
switch (format) {
- case DRM_FORMAT_C1:
bpp = 1;break;- case DRM_FORMAT_C2:
bpp = 2;break;- case DRM_FORMAT_C4:
bpp = 4;break;- case DRM_FORMAT_C8: case DRM_FORMAT_NV12: case DRM_FORMAT_NV21:
@@ -283,6 +295,9 @@ bo_create(int fd, unsigned int format, planes[2] = virtual + offsets[2]; break;
- case DRM_FORMAT_C1:
- case DRM_FORMAT_C2:
- case DRM_FORMAT_C4: case DRM_FORMAT_C8: case DRM_FORMAT_ARGB4444: case DRM_FORMAT_XRGB4444:
diff --git a/tests/util/format.c b/tests/util/format.c index 1ca1b82ce947b2f4..4b984af9bce8ac6f 100644 --- a/tests/util/format.c +++ b/tests/util/format.c @@ -40,6 +40,9 @@
static const struct util_format_info format_info[] = { /* Indexed */
- { DRM_FORMAT_C1, "C1" },
- { DRM_FORMAT_C2, "C2" },
- { DRM_FORMAT_C4, "C4" }, { DRM_FORMAT_C8, "C8" }, /* YUV packed */ { DRM_FORMAT_UYVY, "UYVY", MAKE_YUV_INFO(YUV_YCbCr | YUV_CY, 2, 2, 2) },