add automation scripts.

lib/archimedes_c_shim.dart

@@ -0,0 +1,14 @@
+import 'dart:ffi';
+import 'package:archimedes_mobile_lib/dynloader.dart';
+import 'archimedes_mobile_lib_bindings_generated.dart';
+
+final _dylib = getArchimedesCLib();
+final ArchimedesMobileLibBindings _bindings =
+    ArchimedesMobileLibBindings(_dylib);
+
+int getImageData(Pointer<Frame> frame, Pointer<UnsignedChar> data) =>
+    _bindings.archimedes_get_image_data(frame, data);
+
+Pointer<Frame> newFrame(
+        Pointer<Uint8> data, int dataLen, int w, int h, int depth) =>
+    _bindings.new_frame_from_data(data, dataLen, w, h, depth);

lib/archimedes_mobile_lib.dart

@@ -4,43 +4,19 @@ import 'dart:io';
 import 'dart:typed_data';
 // import 'dart:isolate';
 // import 'dart:ui';
+import 'package:archimedes_mobile_lib/archimedes_c_shim.dart';
+import 'package:archimedes_mobile_lib/dynloader.dart';
 import "package:ffi/ffi.dart";
 import "package:path/path.dart" show dirname, join;
 import 'dart:io' show Platform;
 
 import 'archimedes_mobile_lib_bindings_generated.dart';
 
-const String _libName = 'archimedes_mobile_lib';
-final here = dirname(Platform.script.path);
-final build = join(dirname(here), "build");
-
 /// The dynamic library in which the symbols for [ArchimedesMobileLibBindings] can be found.
-final DynamicLibrary _dylib = () {
-  if (Platform.isMacOS || Platform.isIOS) {
-    return DynamicLibrary.open(join(build, '$_libName.framework', _libName));
-  }
-  if (Platform.isAndroid || Platform.isLinux) {
-    return DynamicLibrary.open(join(build, 'lib$_libName.so'));
-  }
-  if (Platform.isWindows) {
-    return DynamicLibrary.open(join('$_libName.dll'));
-  }
-  throw UnsupportedError('Unknown platform: ${Platform.operatingSystem}');
-}();
-
-/// The bindings to the native functions in [_dylib].
-final ArchimedesMobileLibBindings _bindings =
-    ArchimedesMobileLibBindings(_dylib);
-
-int getImageData(Pointer<Frame> frame, Pointer<UnsignedChar> data) =>
-    _bindings.archimedes_get_image_data(frame, data);
-
-Pointer<Frame> newFrame(
-        Pointer<Uint8> data, int dataLen, int w, int h, int depth) =>
-    _bindings.new_frame_from_data(data, dataLen, w, h, depth);
+final DynamicLibrary _dylib = getArchimedesCLib();
 
 void main(List<String> arguments) {
-  final assets = join(dirname(here), "assets");
+  final assets = join(HERE.parent.path, "assets");
   final testFrames = join(assets, "test", "frames");
   final firstFrame = join(testFrames, "0001.png");
   final f = File(firstFrame);

lib/dynloader.dart

@@ -0,0 +1,25 @@
+import 'dart:ffi';
+import 'dart:io';
+import "package:ffi/ffi.dart";
+import "package:path/path.dart" show dirname, join;
+import 'dart:io' show Platform;
+import 'archimedes_mobile_lib_bindings_generated.dart';
+
+const String _libName = 'archimedes_mobile_lib';
+final HERE = File(String.fromEnvironment("CURRENT_EXEC_DIR",
+    defaultValue: (File(Platform.script.path).parent.absolute.path)));
+final BUILD_DIR = File(join(HERE.path, "build"));
+
+DynamicLibrary getArchimedesCLib() {
+  if (Platform.isMacOS || Platform.isIOS) {
+    return DynamicLibrary.open(
+        join(BUILD_DIR.path, '$_libName.framework', _libName));
+  }
+  if (Platform.isAndroid || Platform.isLinux) {
+    return DynamicLibrary.open(join(BUILD_DIR.path, 'lib$_libName.so'));
+  }
+  if (Platform.isWindows) {
+    return DynamicLibrary.open(join(BUILD_DIR.path, '$_libName.dll'));
+  }
+  throw UnsupportedError('Unknown platform: ${Platform.operatingSystem}');
+}

lib/util.dart

@@ -0,0 +1,50 @@
+import 'dart:collection';
+import 'dart:ffi';
+import 'dart:io';
+import "package:ffi/ffi.dart";
+
+class Uint8FlexList extends ListBase<Uint8> {
+  final List<Uint8> _list = [];
+  Uint8FlexList();
+
+  late Pointer<Uint8> pointer;
+
+  @override
+  Uint8 operator [](int index) => _list[index];
+
+  set list(List<Uint8> l) {
+    _list.removeWhere((element) => true);
+    _list.addAll(l);
+    pointer = calloc<Uint8>(l.length);
+    _list.forEach((element) {
+      pointer[_list.indexOf(element)] = element as int;
+    });
+  }
+
+  @override
+  void operator []=(int index, Uint8 value) {
+    _list[index] = value;
+    pointer[index] = value as int;
+  }
+
+  @override
+  int get length => _list.length;
+
+  @override
+  set length(int newLength) {
+    throw Error();
+  }
+
+  static fromList(List<Uint8> l) {
+    final l2 = Uint8FlexList();
+  }
+}
+
+Pointer<Uint8> readUint8Ptr(File file) {
+  final l = file.readAsBytesSync().cast();
+  final dataPointer = calloc<Uint8>(l.length);
+  for (int i = 0; i < l.length; ++i) {
+    dataPointer[i] = l[i];
+  }
+  return dataPointer;
+}