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Date: Wed, 17 Aug 2022 14:43:39 +0800
From: David Gow <davidgow@...gle.com>
To: José Expósito <jose.exposito89@...il.com>
Cc: Javier Martinez Canillas <javierm@...hat.com>,
Daniel Latypov <dlatypov@...gle.com>,
Thomas Zimmermann <tzimmermann@...e.de>,
Maxime Ripard <mripard@...nel.org>,
Daniel Vetter <daniel@...ll.ch>,
David Airlie <airlied@...ux.ie>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Jani Nikula <jani.nikula@...ux.intel.com>,
Maíra Canal <maira.canal@....br>,
Isabella Basso <isabbasso@...eup.net>, magalilemes00@...il.com,
Tales Aparecida <tales.aparecida@...il.com>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
dri-devel@...ts.freedesktop.org,
KUnit Development <kunit-dev@...glegroups.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] drm/format-helper: Add KUnit tests for drm_fb_xrgb8888_to_gray8()
On Tue, Aug 16, 2022 at 6:29 PM José Expósito <jose.exposito89@...il.com> wrote:
>
> Extend the existing test cases to test the conversion from XRGB8888 to
> grayscale.
>
> Signed-off-by: José Expósito <jose.exposito89@...il.com>
> ---
This looks good to me as well. The grey8 conversion is a bit trickier
to eyeball due to ITU BT.601 giving the components different weights,
but it seems sensible and passes here.
Again, KUNIT_EXPECT_MEMEQ() will be nice one day, but shouldn't hold this up.
Reviewed-by: David Gow <davidgow@...gle.com>
Cheers,
-- David
> .../gpu/drm/tests/drm_format_helper_test.c | 62 +++++++++++++++++++
> 1 file changed, 62 insertions(+)
>
> diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c
> index d8536db4de1e..2f548aa51a30 100644
> --- a/drivers/gpu/drm/tests/drm_format_helper_test.c
> +++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
> @@ -37,6 +37,11 @@ struct convert_to_xrgb2101010_result {
> const u32 expected[TEST_BUF_SIZE];
> };
>
> +struct convert_to_gray8_result {
> + unsigned int dst_pitch;
> + const u8 expected[TEST_BUF_SIZE];
> +};
> +
> struct convert_xrgb8888_case {
> const char *name;
> unsigned int pitch;
> @@ -46,6 +51,7 @@ struct convert_xrgb8888_case {
> struct convert_to_rgb565_result rgb565_result;
> struct convert_to_rgb888_result rgb888_result;
> struct convert_to_xrgb2101010_result xrgb2101010_result;
> + struct convert_to_gray8_result gray8_result;
> };
>
> static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
> @@ -71,6 +77,10 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
> .dst_pitch = 0,
> .expected = { 0x3FF00000 },
> },
> + .gray8_result = {
> + .dst_pitch = 0,
> + .expected = { 0x4C },
> + },
> },
> {
> .name = "single_pixel_clip_rectangle",
> @@ -97,6 +107,10 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
> .dst_pitch = 0,
> .expected = { 0x3FF00000 },
> },
> + .gray8_result = {
> + .dst_pitch = 0,
> + .expected = { 0x4C },
> + },
> },
> {
> /* Well known colors: White, black, red, green, blue, magenta,
> @@ -155,6 +169,15 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
> 0x3FFFFC00, 0x000FFFFF,
> },
> },
> + .gray8_result = {
> + .dst_pitch = 0,
> + .expected = {
> + 0xFF, 0x00,
> + 0x4C, 0x99,
> + 0x19, 0x66,
> + 0xE5, 0xB2,
> + },
> + },
> },
> {
> /* Randomly picked colors. Full buffer within the clip area. */
> @@ -206,6 +229,14 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
> 0x2A20300C, 0x1B1705CD, 0x03844672, 0x00000000, 0x00000000,
> },
> },
> + .gray8_result = {
> + .dst_pitch = 5,
> + .expected = {
> + 0x3C, 0x33, 0x34, 0x00, 0x00,
> + 0x6F, 0x3C, 0x33, 0x00, 0x00,
> + 0x34, 0x6F, 0x3C, 0x00, 0x00,
> + },
> + },
> },
> };
>
> @@ -381,11 +412,42 @@ static void xrgb8888_to_xrgb2101010_test(struct kunit *test)
> KUNIT_EXPECT_EQ(test, memcmp(buf, result->expected, dst_size), 0);
> }
>
> +static void xrgb8888_to_gray8_test(struct kunit *test)
> +{
> + const struct convert_xrgb8888_case *params = test->param_value;
> + const struct convert_to_gray8_result *result = ¶ms->gray8_result;
> + size_t dst_size;
> + __u8 *buf = NULL;
> + __u32 *xrgb8888 = NULL;
> + struct iosys_map dst, src;
> +
> + struct drm_framebuffer fb = {
> + .format = drm_format_info(DRM_FORMAT_XRGB8888),
> + .pitches = { params->pitch, 0, 0 },
> + };
> +
> + dst_size = conversion_buf_size(DRM_FORMAT_R8, result->dst_pitch,
> + ¶ms->clip);
> + KUNIT_ASSERT_GT(test, dst_size, 0);
> +
> + buf = kunit_kzalloc(test, dst_size, GFP_KERNEL);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
> + iosys_map_set_vaddr(&dst, buf);
> +
> + xrgb8888 = le32buf_to_cpu(test, params->xrgb8888, TEST_BUF_SIZE);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, xrgb8888);
> + iosys_map_set_vaddr(&src, xrgb8888);
> +
> + drm_fb_xrgb8888_to_gray8(&dst, &result->dst_pitch, &src, &fb, ¶ms->clip);
> + KUNIT_EXPECT_EQ(test, memcmp(buf, result->expected, dst_size), 0);
> +}
> +
> static struct kunit_case drm_format_helper_test_cases[] = {
> KUNIT_CASE_PARAM(xrgb8888_to_rgb332_test, convert_xrgb8888_gen_params),
> KUNIT_CASE_PARAM(xrgb8888_to_rgb565_test, convert_xrgb8888_gen_params),
> KUNIT_CASE_PARAM(xrgb8888_to_rgb888_test, convert_xrgb8888_gen_params),
> KUNIT_CASE_PARAM(xrgb8888_to_xrgb2101010_test, convert_xrgb8888_gen_params),
> + KUNIT_CASE_PARAM(xrgb8888_to_gray8_test, convert_xrgb8888_gen_params),
> {}
> };
>
> --
> 2.25.1
>
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