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feat(draw/sw): added support for LV_COLOR_FORMAT_L8 (#5800)

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Signed-off-by: pengyiqiang <pengyiqiang@xiaomi.com>
Signed-off-by: qinshijing <qinshijing@xiaomi.com>
Co-authored-by: Zoltan Janosy <zjanosy@fishman.com>
Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
Co-authored-by: VIFEX <vifextech@foxmail.com>
Co-authored-by: pengyiqiang <pengyiqiang@xiaomi.com>
Co-authored-by: Niklas Fiekas <niklas.fiekas@sartorius.com>
Co-authored-by: qinshijing <51692568+qinshijing@users.noreply.github.com>
Co-authored-by: qinshijing <qinshijing@xiaomi.com>
Co-authored-by: Neo Xu <neo.xu1990@gmail.com>
This commit is contained in:
Zoltan Janosy
2024-04-20 13:14:25 +02:00
committed by GitHub
parent be4a9d1e73
commit abc8a7292a
114 changed files with 3033 additions and 83 deletions
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15
scripts/LVGLImage.py
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@@ -819,6 +819,16 @@ const lv_image_dsc_t {varname} = {{
rawdata += row
self.set_data(cf, w, h, rawdata)
def sRGB_to_linear(self, x):
if x < 0.04045:
return x / 12.92
return pow((x + 0.055) / 1.055, 2.4)
def linear_to_sRGB(self, y):
if y <= 0.0031308:
return 12.92 * y
return 1.055 * pow(y, 1 / 2.4) - 0.055
def _png_to_luma_only(self, cf: ColorFormat, filename: str):
reader = png.Reader(str(filename))
@@ -831,8 +841,11 @@ const lv_image_dsc_t {varname} = {{
A = row[3::4]
for r, g, b, a in zip(R, G, B, A):
r, g, b, a = color_pre_multiply(r, g, b, a, self.background)
r = self.sRGB_to_linear(r / 255.0)
g = self.sRGB_to_linear(g / 255.0)
b = self.sRGB_to_linear(b / 255.0)
luma = 0.2126 * r + 0.7152 * g + 0.0722 * b
rawdata += uint8_t(int(luma))
rawdata += uint8_t(int(self.linear_to_sRGB(luma) * 255))
self.set_data(ColorFormat.L8, w, h, rawdata)