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fix(nema): fix indexed image error (#7744)

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This commit is contained in:
William Spinelli
2025-02-12 02:31:42 +01:00
committed by GitHub
parent da2438712b
commit 49d6d7295a
2 changed files with 24 additions and 7 deletions
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20
scripts/LVGLImage.py
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@@ -498,6 +498,7 @@ class LVGLImage:
self.stride = 0 # default no valid stride value
self.premultiplied = False
self.rgb565_dither = False
self.nema_gfx = False
self.set_data(cf, w, h, data)
def __repr__(self) -> str:
@@ -840,7 +841,8 @@ class LVGLImage:
filename: str,
cf: ColorFormat = None,
background: int = 0x00_00_00,
rgb565_dither=False):
rgb565_dither=False,
nema_gfx=False):
"""
Create lvgl image from png file.
If cf is none, used I1/2/4/8 based on palette size
@@ -848,6 +850,7 @@ class LVGLImage:
self.background = background
self.rgb565_dither = rgb565_dither
self.nema_gfx = nema_gfx
if cf is None: # guess cf from filename
# split filename string and match with ColorFormat to check
@@ -881,7 +884,7 @@ class LVGLImage:
w, h, rows, metadata = reader.read()
# to preserve original palette data only convert the image if needed. For this
# check if image has a palette and the requested palette size equals the existing one
# check if image has a palette and the requested palette size equals the existing one
if not 'palette' in metadata or not auto_cf and len(metadata['palette']) != 2 ** cf.bpp:
# reread and convert file
reader = png.Reader(
@@ -918,6 +921,8 @@ class LVGLImage:
# pack data if not in I8 format
if cf == ColorFormat.I8:
for e in rows:
if self.nema_gfx:
e = bytearray((x >> 4) | ((x & 0x0F) << 4) for x in e)
rawdata += e
else:
for e in png.pack_rows(rows, cf.bpp):
@@ -1262,7 +1267,8 @@ class PNGConverter:
premultiply: bool = False,
compress: CompressMethod = CompressMethod.NONE,
keep_folder=True,
rgb565_dither=False) -> None:
rgb565_dither=False,
nema_gfx=False) -> None:
self.files = files
self.cf = cf
self.ofmt = ofmt
@@ -1274,6 +1280,7 @@ class PNGConverter:
self.compress = compress
self.background = background
self.rgb565_dither = rgb565_dither
self.nema_gfx = nema_gfx
def _replace_ext(self, input, ext):
if self.keep_folder:
@@ -1292,7 +1299,7 @@ class PNGConverter:
img = RAWImage().from_file(f, self.cf)
img.to_c_array(self._replace_ext(f, ".c"))
else:
img = LVGLImage().from_png(f, self.cf, background=self.background, rgb565_dither=self.rgb565_dither)
img = LVGLImage().from_png(f, self.cf, background=self.background, rgb565_dither=self.rgb565_dither, nema_gfx=self.nema_gfx)
img.adjust_stride(align=self.align)
if self.premultiply:
@@ -1350,6 +1357,8 @@ def main():
type=lambda x: int(x, 0),
metavar='color',
nargs='?')
parser.add_argument('--nemagfx', action='store_true',
help="export color palette for I8 images in a format compatible with NEMA accelerator", default=False)
parser.add_argument('-o',
'--output',
default="./output",
@@ -1390,7 +1399,8 @@ def main():
premultiply=args.premultiply,
compress=compress,
keep_folder=False,
rgb565_dither=args.rgb565dither)
rgb565_dither=args.rgb565dither,
nema_gfx=args.nemagfx)
output = converter.convert()
for f, img in output:
logging.info(f"len: {img.data_len} for {path.basename(f)} ")