Apply mask throw RangeError on getting R color (Not in inclusive range 0..639999: 640000)

[g-apparence]

file : pixel_uint8.dart line 146

ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: RangeError (length): Invalid value: Not in inclusive range 0..639999: 640000
#0      Uint8List.[] (dart:typed_data-patch/typed_data_patch.dart)
#1      PixelUint8.index (package:image/src/image/pixel_uint8.dart:141:24)
pixel_uint8.dart:141
#2      PixelUint8.r (package:image/src/image/pixel_uint8.dart:148:13)
pixel_uint8.dart:148
#3      getLuminance (package:image/src/util/color_util.dart:129:40)
color_util.dart:129
#4      PixelUint8.luminance (package:image/src/image/pixel_uint8.dart:234:47)
pixel_uint8.dart:234
#5      PixelUint8.getChannel (package:image/src/image/pixel_uint8.dart:241:38)
pixel_uint8.dart:241
#6      PixelUint8.getChannelNormalized (package:image/src/image/pixel_uint8.dart:245:7)
pixel_uint8.dart:245
#7      drawPixel (package:image/src/draw/draw_pixel.dart:31:36)
draw_pixel.dart:31
#8      _composite (package:image/src/draw/composite_image.dart:136:7)
composite_image.dart:136
#9      compositeImage (package:image/src/draw/composite_image.dart:71:5)

@override
  num get r => palette == null
      ? numChannels > 0
          ? data[_index] // throws here 
          : 0
      : palette!.getRed(data[_index]);

Here is the code I used to do it

final maskImgRes = await rootBundle.load(preset.assetPath);
final maskImgBytes = maskImgRes.buffer.asUint8List();
final maskImg = img.decodeImage(maskImgBytes);
print("...mask loaded");

final imgBytes = await widget.drawable.image.toByteData(format: ui.ImageByteFormat.png);
final srcImg = img.decodeImage(imgBytes!.buffer.asUint8List());
print("...image loaded");

// var dst = img.Image.from(srcImg!);
var dst = img.Image(width: widget.drawable.image.width, height: widget.drawable.image.height, numChannels: 4);
print("...dst image loaded");

dst = img.compositeImage(
  dst, 
  srcImg!,
  mask: maskImg,
  // maskChannel: img.Channel.luminance,
);
print("...image masked");
final encodedPng = img.encodePng(dst);
final resultImage = await decodeImageFromList(encodedPng);

Flutter image version 4.3.0
Device iOS simulator running on iOS 18.1 and impeller.

ps: really love the work you made on this. Thanks a lot.

[brendan-duncan]

Thanks for the report. I fixed it in git. Wasn't range checking the mask sample. I'll be doing a release soon.

[brendan-duncan]

Just published 4.5.0

[g-apparence]

Thanks a lot! 🙏🏻