音频播放接口增加播放速率控制，保存文件接口让用户选择保存路径

lib/config/locator.dart

@@ -156,6 +156,7 @@ Future<void> setupLocator() async {
   getIt.registerLazySingleton<MessageHandler>(() => AudioPauseHandler(), instanceName: 'audioPause');
   getIt.registerLazySingleton<MessageHandler>(() => AudioPauseHandler(), instanceName: 'audioPause');
   getIt.registerLazySingleton<MessageHandler>(() => AudioResumeHandler(), instanceName: 'audioResume');
   getIt.registerLazySingleton<MessageHandler>(() => AudioResumeHandler(), instanceName: 'audioResume');
   getIt.registerLazySingleton<MessageHandler>(() => AudioSeekHandler(), instanceName: 'audioSeek');
   getIt.registerLazySingleton<MessageHandler>(() => AudioSeekHandler(), instanceName: 'audioSeek');
+  getIt.registerLazySingleton<MessageHandler>(() => AudioPlayRateHandler(), instanceName: 'audioPlayRate');
   getIt.registerLazySingleton<MessageHandler>(() => AudioStopHandler(), instanceName: 'audioStop');
   getIt.registerLazySingleton<MessageHandler>(() => AudioStopHandler(), instanceName: 'audioStop');
   getIt.registerLazySingleton<MessageHandler>(() => AudioClearHandler(), instanceName: 'audioClear');
   getIt.registerLazySingleton<MessageHandler>(() => AudioClearHandler(), instanceName: 'audioClear');
 
 

lib/data/repositories/message/audio_player_handler.dart

@@ -14,13 +14,15 @@ class AudioPlayHandler extends MessageHandler {
     final seek = params['seek'] as int? ?? 0;
     final seek = params['seek'] as int? ?? 0;
     // 暂时忽略
     // 暂时忽略
     // final isBg = params['isBg'] as bool ?? false;
     // final isBg = params['isBg'] as bool ?? false;
+    final playRate = (params['playRate'] as num?)?.toDouble() ?? 1.0;
+
     var playId = params['playId'] as String? ?? '';
     var playId = params['playId'] as String? ?? '';
     if (playId.isEmpty) {
     if (playId.isEmpty) {
       playId = Uuid().v4();
       playId = Uuid().v4();
     }
     }
 
 
     var playerService = getIt.get<PlayerService>();
     var playerService = getIt.get<PlayerService>();
-    var result = await playerService.playAudio(url, seek, playId);
+    var result = await playerService.playAudio(url, seek, playId, playRate);
 
 
     if (!result) {
     if (!result) {
       throw Exception('播放错误');
       throw Exception('播放错误');
@@ -39,7 +41,8 @@ class AudioPauseHandler extends MessageHandler {
 class AudioResumeHandler extends MessageHandler {
 class AudioResumeHandler extends MessageHandler {
   @override
   @override
   Future<dynamic> handleMessage(dynamic params) async {
   Future<dynamic> handleMessage(dynamic params) async {
-    return await getIt.get<PlayerService>().resumeAudio();
+    final playRate = (params['playRate'] as num?)?.toDouble() ?? 1.0;
+    return await getIt.get<PlayerService>().resumeAudio(playRate);
   }
   }
 }
 }
 
 
@@ -55,6 +58,20 @@ class AudioSeekHandler extends MessageHandler {
   }
   }
 }
 }
 
 
+class AudioPlayRateHandler extends MessageHandler {
+  @override
+  Future<dynamic> handleMessage(dynamic params) async {
+    if (params is! Map<String, dynamic>) {
+      throw Exception('参数错误');
+    }
+
+    // var playId = params['playId'] as String? ?? '';
+    final playRate = (params['playRate'] as num?)?.toDouble() ?? 1.0;
+
+    return await getIt.get<PlayerService>().rateAudio(playRate);
+  }
+}
+
 class AudioStopHandler extends MessageHandler {
 class AudioStopHandler extends MessageHandler {
   @override
   @override
   Future<dynamic> handleMessage(dynamic params) async {
   Future<dynamic> handleMessage(dynamic params) async {

lib/data/repositories/message/save_file_to_disk_handler.dart

@@ -2,8 +2,8 @@ import 'dart:io';
 
 
 import 'package:appframe/services/dispatcher.dart';
 import 'package:appframe/services/dispatcher.dart';
 import 'package:dio/dio.dart';
 import 'package:dio/dio.dart';
+import 'package:file_picker/file_picker.dart';
 import 'package:path/path.dart' as path;
 import 'package:path/path.dart' as path;
-import 'package:path_provider/path_provider.dart';
 
 
 class SaveFileToDisKHandler extends MessageHandler {
 class SaveFileToDisKHandler extends MessageHandler {
   @override
   @override
@@ -17,9 +17,19 @@ class SaveFileToDisKHandler extends MessageHandler {
       throw Exception('参数错误');
       throw Exception('参数错误');
     }
     }
 
 
-    String ext = path.extension(filePath);
-    final Directory tempDir = await getApplicationDocumentsDirectory();
-    final targetPath = path.join(tempDir.path, '${DateTime.now().millisecondsSinceEpoch}$ext');
+    // 让用户选择保存目录
+    String? selectedDirectory = await FilePicker.platform.getDirectoryPath();
+    // 获取filePath中的文件名，以及后缀名
+    var fileName = path.basenameWithoutExtension(filePath);
+    var ext = path.extension(filePath);
+    // 要保存的路径
+    var targetPath = path.join(selectedDirectory!, '$fileName.$ext');
+    // 如果文件存在，则在文件名后添加数字
+    int i = 1;
+    while (File(targetPath).existsSync()) {
+      targetPath = path.join(selectedDirectory, '$fileName($i).$ext');
+      i++;
+    }
 
 
     if (filePath.startsWith('http')) {
     if (filePath.startsWith('http')) {
       final resp = await Dio().download(filePath, targetPath);
       final resp = await Dio().download(filePath, targetPath);