Example of getting bytes instead of saving directly to file for speech

example/pubspec.lock

@@ -159,7 +159,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "4.1.4"
+    version: "5.1.0"
   dart_style:
     dependency: transitive
     description:

lib/src/core/base/audio/interfaces.dart

@@ -1,4 +1,5 @@
 import 'dart:io';
+import 'dart:typed_data';
 
 import '../../../../dart_openai.dart';
 
@@ -13,6 +14,14 @@ abstract class CreateInterface {
     Directory? outputDirectory,
   });
 
+  Future<Uint8List> createSpeechBytes({
+    required String model,
+    required String input,
+    required String voice,
+    OpenAIAudioSpeechResponseFormat? responseFormat,
+    double? speed,
+  });
+
   Future<OpenAIAudioModel> createTranscription({
     required File file,
     required String model,

lib/src/core/networking/client.dart

@@ -1,6 +1,7 @@
 import "dart:async";
 import "dart:convert";
 import "dart:io";
+import "dart:typed_data";
 import "package:dart_openai/src/core/constants/config.dart";
 import "package:dart_openai/src/core/utils/extensions.dart";
 
@@ -206,6 +207,55 @@ abstract class OpenAINetworkingClient {
     Map<String, dynamic>? body,
     http.Client? client,
   }) async {
+
+    var response = await postAndGetResponse(to: to, body: body, client: client);
+
+    final fileTypeHeader = "content-type";
+
+    final fileExtensionFromBodyResponseFormat =
+        response.headers[fileTypeHeader]?.split("/").last ?? "mp3";
+
+    final fileName =
+        outputFileName + "." + fileExtensionFromBodyResponseFormat;
+
+    File file = File(
+      "${outputDirectory != null ? outputDirectory.path : ''}" +
+          "/" +
+          fileName,
+    );
+
+    OpenAILogger.creatingFile(fileName);
+
+    await file.create();
+    OpenAILogger.fileCreatedSuccessfully(fileName);
+    OpenAILogger.writingFileContent(fileName);
+
+    file = await file.writeAsBytes(
+      response.bodyBytes,
+      mode: FileMode.write,
+    );
+
+    OpenAILogger.fileContentWrittenSuccessfully(fileName);
+
+    return onFileResponse(file);
+  }
+
+
+  static Future<Uint8List> postAndGetBytes({
+    required String to,
+    Map<String, dynamic>? body,
+    http.Client? client,
+  }) async {
+
+    var response = await postAndGetResponse(to: to, body: body, client: client);
+    return response.bodyBytes;
+  }
+
+  static Future<http.Response> postAndGetResponse({
+    required String to,
+    Map<String, dynamic>? body,
+    http.Client? client,
+  }) async {
     OpenAILogger.logStartRequest(to);
 
     final uri = Uri.parse(to);
@@ -255,34 +305,7 @@ abstract class OpenAINetworkingClient {
 
       OpenAILogger.requestFinishedSuccessfully();
 
-      final fileTypeHeader = "content-type";
-
-      final fileExtensionFromBodyResponseFormat =
-          response.headers[fileTypeHeader]?.split("/").last ?? "mp3";
-
-      final fileName =
-          outputFileName + "." + fileExtensionFromBodyResponseFormat;
-
-      File file = File(
-        "${outputDirectory != null ? outputDirectory.path : ''}" +
-            "/" +
-            fileName,
-      );
-
-      OpenAILogger.creatingFile(fileName);
-
-      await file.create();
-      OpenAILogger.fileCreatedSuccessfully(fileName);
-      OpenAILogger.writingFileContent(fileName);
-
-      file = await file.writeAsBytes(
-        response.bodyBytes,
-        mode: FileMode.write,
-      );
-
-      OpenAILogger.fileContentWrittenSuccessfully(fileName);
-
-      return onFileResponse(file);
+      return response;
     }
   }
 

lib/src/instance/audio/audio.dart

@@ -1,3 +1,5 @@
+import 'dart:typed_data';
+
 import 'package:dart_openai/src/core/builder/base_api_url.dart';
 import 'package:dart_openai/src/core/networking/client.dart';
 
@@ -151,4 +153,24 @@ interface class OpenAIAudio implements OpenAIAudioBase {
       outputDirectory: outputDirectory,
     );
   }
+
+  @override
+  Future<Uint8List> createSpeechBytes({
+    required String model,
+    required String input,
+    required String voice,
+    OpenAIAudioSpeechResponseFormat? responseFormat,
+    double? speed,
+  }) async {
+    return await OpenAINetworkingClient.postAndGetBytes(
+      to: BaseApiUrlBuilder.build(endpoint + "/speech"),
+      body: {
+        "model": model,
+        "input": input,
+        "voice": voice,
+        if (responseFormat != null) "response_format": responseFormat.name,
+        if (speed != null) "speed": speed,
+      },
+    );
+  }
 }