diff options
| author | Geert Uytterhoeven <geert@linux-m68k.org> | 2022-03-03 18:17:27 +0100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2023-10-24 09:44:25 +0200 |
| commit | 15c6657617a38527b8c4698d3f56cd6cbd55e3fb (patch) | |
| tree | 1930c3f6bbb9995bcd6ba5b41cb5d32de606840b | |
| parent | 8134deb31f5220922f8dd5ea9a0e0bfb6f85a487 (diff) | |
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 <geert@linux-m68k.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
v5:
- Add Reviewed-by,
v4:
- No changes,
v3:
- Add Acked-by,
v2:
- Use new smpte_top[],
- Split off changes to tests/util/pattern.c.
| -rw-r--r-- | tests/util/pattern.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/tests/util/pattern.c b/tests/util/pattern.c index fc457c4a..17074265 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: |