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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| import 'dart:io'; | ||
| import 'package:native_assets_cli/native_assets_cli.dart'; | ||
| import 'package:http/http.dart' as http; | ||
| import 'package:path/path.dart' as path; | ||
|
|
||
| import '../sdk_downloads.dart'; | ||
|
|
||
| late File logFile; | ||
|
|
||
| final logs = <(DateTime, String)>[]; | ||
| void log(String msg) { | ||
| logs.add((DateTime.now(), msg)); | ||
| if (!logFile.parent.existsSync()) { | ||
| logFile.parent.createSync(); | ||
| } | ||
|
|
||
| if (logFile.existsSync()) { | ||
| logFile.deleteSync(); | ||
| } | ||
| logFile.createSync(); | ||
| logFile.writeAsStringSync(logs | ||
| .map<String>((rec) => '[${rec.$1.toIso8601String()}] ${rec.$2}') | ||
| .toList() | ||
| .join('\n\n')); | ||
| } | ||
|
|
||
| Future<void> main(List<String> args) async { | ||
| await build(args, (buildConfig, buildOutput) async { | ||
| logFile = File( | ||
| path.joinAll([ | ||
| Directory.current.path, // root dir of app using `mediapipe-task-xyz` | ||
| 'build/${buildConfig.dryRun ? "dryrun" : "live-run"}-build-log.txt', | ||
| ]), | ||
| ); | ||
|
|
||
| log(args.join(' ')); | ||
| final String targetOs = buildConfig.targetOS.toString(); | ||
|
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| log('dir.current: ${Directory.current.absolute.path}'); | ||
|
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| // Throw if target runtime is unsupported. | ||
| if (!sdkDownloadUrls.containsKey(targetOs)) { | ||
| throw Exception('Unsupported target OS: $targetOs. ' | ||
| 'Supported values are: ${sdkDownloadUrls.keys.toSet()}'); | ||
| } | ||
|
|
||
| buildOutput.addDependencies([ | ||
| buildConfig.packageRoot.resolve('build.dart'), | ||
| buildConfig.packageRoot.resolve('sdk_downloads.dart'), | ||
| ]); | ||
|
|
||
| final modelName = 'libllm_inference_engine'; | ||
| final Iterable<String> archKeys; | ||
| if (buildConfig.dryRun) { | ||
| archKeys = sdkDownloadUrls[targetOs]![modelName]!.keys; | ||
| } else { | ||
| archKeys = [buildConfig.targetArchitecture.toString()]; | ||
| } | ||
| for (String arch in archKeys) { | ||
| arch = getArchAlias(arch); | ||
| log('arch: $arch'); | ||
| log('sdkDownloadUrls[$targetOs]: ${sdkDownloadUrls[targetOs]}'); | ||
| log('sdkDownloadUrls[$targetOs][$modelName]: ${sdkDownloadUrls[targetOs]![modelName]}'); | ||
| log('sdkDownloadUrls[$targetOs][$modelName][$arch]: ${sdkDownloadUrls[targetOs]![modelName]![arch]}'); | ||
|
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||
| if (!sdkDownloadUrls[targetOs]!['libllm_inference_engine']! | ||
| .containsKey(arch)) { | ||
| continue; | ||
| } | ||
| final assetUrl = | ||
| sdkDownloadUrls[targetOs]!['libllm_inference_engine']![arch]!; | ||
|
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||
| // Take last chunk and drop file extension, e.g., | ||
| // "path/to/file.dylib" -> "file" | ||
| final fileName = assetUrl.split('/').last.split('.').first; | ||
|
|
||
| final downloadFileLocation = buildConfig.outputDirectory.resolve( | ||
| buildConfig.targetOS.dylibFileName(fileName), | ||
| ); | ||
| buildOutput.addAsset( | ||
| NativeCodeAsset( | ||
| package: 'mediapipe_genai', | ||
| name: | ||
| 'src/io/third_party/mediapipe/generated/mediapipe_genai_bindings.dart', | ||
| linkMode: DynamicLoadingBundled(), | ||
| os: buildConfig.targetOS, | ||
| architecture: buildConfig.targetArchitecture, | ||
| file: downloadFileLocation, | ||
| ), | ||
| ); | ||
| if (!buildConfig.dryRun) { | ||
| log('downloadFileLocation: $downloadFileLocation'); | ||
| downloadAsset(assetUrl, downloadFileLocation); | ||
| } | ||
| } | ||
| }); | ||
| } | ||
|
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||
| Future<void> downloadAsset(String assetUrl, Uri destinationFile) async { | ||
| final downloadUri = Uri.parse(assetUrl); | ||
| final downloadedFile = File(destinationFile.toFilePath()); | ||
| log('Saving file to ${downloadedFile.absolute.path}'); | ||
|
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| final downloadResponse = await http.get(downloadUri); | ||
| log('Download response: ${downloadResponse.statusCode}'); | ||
|
|
||
| if (downloadResponse.statusCode == 200) { | ||
| if (downloadedFile.existsSync()) { | ||
| downloadedFile.deleteSync(); | ||
| } | ||
| downloadedFile.createSync(); | ||
| log('Saved file to ${downloadedFile.absolute.path}\n'); | ||
| downloadedFile.writeAsBytes(downloadResponse.bodyBytes); | ||
| } else { | ||
| log('${downloadResponse.statusCode} :: ${downloadResponse.body}'); | ||
| throw Exception( | ||
| '${downloadResponse.statusCode} :: ${downloadResponse.body}'); | ||
| } | ||
| } | ||
|
|
||
| /// Translates native-assets architecture names into MediaPipe architecture names | ||
| String getArchAlias(String arch) => | ||
| <String, String>{ | ||
| 'arm': 'arm64', | ||
| }[arch] ?? | ||
| arch; |
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