Refactor flutter to support Android (#1072)

flutter/sherpa_onnx_macos/.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+# Libraries should not include pubspec.lock, per https://dart.dev/guides/libraries/private-files#pubspeclock.
+/pubspec.lock
+**/doc/api/
+.dart_tool/
+build/

flutter/sherpa_onnx_macos/.metadata

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+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "5dcb86f68f239346676ceb1ed1ea385bd215fba1"
+  channel: "stable"
+
+project_type: plugin_ffi
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 5dcb86f68f239346676ceb1ed1ea385bd215fba1
+      base_revision: 5dcb86f68f239346676ceb1ed1ea385bd215fba1
+    - platform: macos
+      create_revision: 5dcb86f68f239346676ceb1ed1ea385bd215fba1
+      base_revision: 5dcb86f68f239346676ceb1ed1ea385bd215fba1
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

flutter/sherpa_onnx_macos/README.md

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+# sherpa_onnx_linux
+
+This is a sub project of [sherpa-onnx](https://github.com/k2-fsa/sherpa-onnx).
+
+You are not expected to use this package directly.
+
+Please see the entry point at <https://pub.dev/packages/sherpa_onnx>.

flutter/sherpa_onnx_macos/analysis_options.yaml

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+include: package:flutter_lints/flutter.yaml
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

flutter/sherpa_onnx_macos/example/README.md

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+# Introduction
+
+Please find examples at
+
+https://github.com/k2-fsa/sherpa-onnx/tree/master/flutter-examples
+
+and
+
+https://github.com/k2-fsa/sherpa-onnx/tree/master/dart-api-examples

flutter/sherpa_onnx_macos/example/example.md

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+# sherpa-onnx app example
+
+## Streaming speech recognition
+
+Please see https://github.com/k2-fsa/sherpa-onnx/tree/master/dart-api-examples/streaming-asr
+
+## Non-streaming speech recognition
+
+Please see https://github.com/k2-fsa/sherpa-onnx/tree/master/dart-api-examples/non-streaming-asr
+
+## Text to speech (TTS)
+
+Please see https://github.com/k2-fsa/sherpa-onnx/tree/master/dart-api-examples/tts
+
+## Voice activity detection (VAD)
+
+Please see https://github.com/k2-fsa/sherpa-onnx/tree/master/dart-api-examples/vad
+

flutter/sherpa_onnx_macos/macos/README.md

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+# Introduction
+
+`*.dylib` files are generated dynamically using GitHub actions during a new release.
+
+We don't check-in pre-built library files into git.

flutter/sherpa_onnx_macos/macos/sherpa_onnx_macos.podspec

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+#
+# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html.
+# Run `pod lib lint sherpa_onnx_macos.podspec` to validate before publishing.
+#
+Pod::Spec.new do |s|
+  s.name             = 'sherpa_onnx_macos'
+  s.version          = '1.10.6'
+  s.summary          = 'sherpa-onnx Flutter FFI plugin project.'
+  s.description      = <<-DESC
+sherpa-onnx Flutter FFI plugin project.
+                       DESC
+  s.homepage         = 'https://github.com/k2-fsa/sherpa-onnx'
+  s.license          = { :file => '../LICENSE' }
+  s.author           = { 'Fangjun Kuang' => 'csukuangfj@gmail.com' }
+
+  # This will ensure the source files in Classes/ are included in the native
+  # builds of apps using this FFI plugin. Podspec does not support relative
+  # paths, so Classes contains a forwarder C file that relatively imports
+  # `../src/*` so that the C sources can be shared among all target platforms.
+  s.source           = { :path => '.' }
+  s.dependency 'FlutterMacOS'
+  s.vendored_libraries = '*.dylib'
+
+  s.platform = :osx, '10.11'
+  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES' }
+  s.swift_version = '5.0'
+end

flutter/sherpa_onnx_macos/pubspec.yaml

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+name: sherpa_onnx_macos
+description: "A new Flutter FFI plugin project."
+version: 0.0.1
+homepage:
+
+environment:
+  sdk: '>=3.4.0 <4.0.0'
+  flutter: '>=3.3.0'
+
+dependencies:
+  flutter:
+    sdk: flutter
+
+flutter:
+  plugin:
+    platforms:
+      macos:
+        ffiPlugin: true