From 15c6657617a38527b8c4698d3f56cd6cbd55e3fb Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 3 Mar 2022 18:17:27 +0100 Subject: [PATCH] util: add SMPTE pattern support for C4 format Add support for drawing the SMPTE pattern in a buffer using the C4 indexed format. Signed-off-by: Geert Uytterhoeven Acked-by: Sam Ravnborg Reviewed-by: Dmitry Baryshkov --- v5: - Add Reviewed-by, v4: - No changes, v3: - Add Acked-by, v2: - Use new smpte_top[], - Split off changes to tests/util/pattern.c. --- tests/util/pattern.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/tests/util/pattern.c b/tests/util/pattern.c index fc457c4..1707426 100644 --- a/tests/util/pattern.c +++ b/tests/util/pattern.c @@ -672,6 +672,46 @@ static const struct drm_color_lut smpte_color_lut[] = { #undef EXPAND_COLOR +static void write_pixel_4(uint8_t *mem, unsigned int x, unsigned int pixel) +{ + if (x & 1) + mem[x / 2] = (mem[x / 2] & 0xf0) | (pixel & 0x0f); + else + mem[x / 2] = (mem[x / 2] & 0x0f) | (pixel << 4); +} + +static void fill_smpte_c4(void *mem, unsigned int width, unsigned int height, + unsigned int stride) +{ + unsigned int x; + unsigned int y; + + for (y = 0; y < height * 6 / 9; ++y) { + for (x = 0; x < width; ++x) + write_pixel_4(mem, x, smpte_top[x * 7 / width]); + mem += stride; + } + + for (; y < height * 7 / 9; ++y) { + for (x = 0; x < width; ++x) + write_pixel_4(mem, x, smpte_middle[x * 7 / width]); + mem += stride; + } + + for (; y < height; ++y) { + for (x = 0; x < width * 5 / 7; ++x) + write_pixel_4(mem, x, + smpte_bottom[x * 4 / (width * 5 / 7)]); + for (; x < width * 6 / 7; ++x) + write_pixel_4(mem, x, + smpte_bottom[(x - width * 5 / 7) * 3 / + (width / 7) + 4]); + for (; x < width; ++x) + write_pixel_4(mem, x, smpte_bottom[7]); + mem += stride; + } +} + static void fill_smpte_c8(void *mem, unsigned int width, unsigned int height, unsigned int stride) { @@ -723,6 +763,8 @@ static void fill_smpte(const struct util_format_info *info, void *planes[3], unsigned char *u, *v; switch (info->format) { + case DRM_FORMAT_C4: + return fill_smpte_c4(planes[0], width, height, stride); case DRM_FORMAT_C8: return fill_smpte_c8(planes[0], width, height, stride); case DRM_FORMAT_UYVY: -- 2.7.4