Start splitting frame_generator_capturer to extract Create set of functions

Bug: b/272350185
Change-Id: Id95d4f6264417595f292d2edcacc71bca93e2bd6
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/301102
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39846}

test/BUILD.gn

@@ -126,6 +126,20 @@ rtc_library("test_video_capturer") {
   ]
 }
 
+rtc_library("create_frame_generator_capturer") {
+  visibility = [ "*" ]
+  testonly = true
+  sources = [ "create_frame_generator_capturer.h" ]
+  deps = [
+    ":frame_generator_capturer",
+    "../api:frame_generator_api",
+    "../api/task_queue",
+    "../api/units:time_delta",
+    "../system_wrappers",
+  ]
+  absl_deps = [ "//third_party/abseil-cpp/absl/types:optional" ]
+}
+
 rtc_library("frame_generator_capturer") {
   visibility = [ "*" ]
   testonly = true
@@ -169,6 +183,7 @@ rtc_library("video_test_common") {
   ]
 
   deps = [
+    ":create_frame_generator_capturer",
     ":fileutils",
     ":frame_utils",
     ":scoped_key_value_config",

test/create_frame_generator_capturer.h

@@ -0,0 +1,65 @@
+/*
+ *  Copyright (c) 2023 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+#ifndef TEST_CREATE_FRAME_GENERATOR_CAPTURER_H_
+#define TEST_CREATE_FRAME_GENERATOR_CAPTURER_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/task_queue/task_queue_factory.h"
+#include "api/test/frame_generator_interface.h"
+#include "api/units/time_delta.h"
+#include "system_wrappers/include/clock.h"
+#include "test/frame_generator_capturer.h"
+
+namespace webrtc {
+namespace test {
+
+std::unique_ptr<FrameGeneratorCapturer> CreateFrameGeneratorCapturer(
+    Clock* clock,
+    TaskQueueFactory& task_queue_factory,
+    FrameGeneratorCapturerConfig::SquaresVideo config) {
+  return FrameGeneratorCapturer::Create(clock, task_queue_factory, config);
+}
+
+std::unique_ptr<FrameGeneratorCapturer> CreateFrameGeneratorCapturer(
+    Clock* clock,
+    TaskQueueFactory& task_queue_factory,
+    FrameGeneratorCapturerConfig::SquareSlides config) {
+  return FrameGeneratorCapturer::Create(clock, task_queue_factory, config);
+}
+
+std::unique_ptr<FrameGeneratorCapturer> CreateFrameGeneratorCapturer(
+    Clock* clock,
+    TaskQueueFactory& task_queue_factory,
+    FrameGeneratorCapturerConfig::VideoFile config) {
+  return FrameGeneratorCapturer::Create(clock, task_queue_factory, config);
+}
+
+std::unique_ptr<FrameGeneratorCapturer> CreateFrameGeneratorCapturer(
+    Clock* clock,
+    TaskQueueFactory& task_queue_factory,
+    FrameGeneratorCapturerConfig::ImageSlides config) {
+  return FrameGeneratorCapturer::Create(clock, task_queue_factory, config);
+}
+
+std::unique_ptr<FrameGeneratorCapturer> CreateFrameGeneratorCapturer(
+    Clock* clock,
+    TaskQueueFactory& task_queue_factory,
+    const FrameGeneratorCapturerConfig& config) {
+  return FrameGeneratorCapturer::Create(clock, task_queue_factory, config);
+}
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // TEST_CREATE_FRAME_GENERATOR_CAPTURER_H_

test/peer_scenario/BUILD.gn

@@ -22,6 +22,7 @@ if (rtc_include_tests) {
       "signaling_route.h",
     ]
     deps = [
+      "..:create_frame_generator_capturer",
       "..:fake_video_codecs",
       "..:fileutils",
       "..:frame_generator_capturer",

test/peer_scenario/peer_scenario_client.cc

@@ -33,6 +33,7 @@
 #include "media/engine/webrtc_media_engine.h"
 #include "modules/audio_device/include/test_audio_device.h"
 #include "p2p/client/basic_port_allocator.h"
+#include "test/create_frame_generator_capturer.h"
 #include "test/fake_decoder.h"
 #include "test/fake_vp8_encoder.h"
 #include "test/frame_generator_capturer.h"
@@ -331,7 +332,7 @@ PeerScenarioClient::VideoSendTrack PeerScenarioClient::CreateVideo(
     VideoSendTrackConfig config) {
   RTC_DCHECK_RUN_ON(signaling_thread_);
   VideoSendTrack res;
-  auto capturer = FrameGeneratorCapturer::Create(clock(), *task_queue_factory_,
+  auto capturer = CreateFrameGeneratorCapturer(clock(), *task_queue_factory_,
                                                config.generator);
   res.capturer = capturer.get();
   capturer->Init();