From 48f27a72a2d1b8c6507242841d2286d8e9b1f355 Mon Sep 17 00:00:00 2001
From: CloudWebRTC <duanweiwei1982@gmail.com>
Date: Thu, 30 Dec 2021 21:19:05 +0800
Subject: [PATCH] feat: support bypass voice processing for iOS. (#15)

---
 .../RTCPeerConnectionFactory+Native.h         |  6 ++++
 .../peerconnection/RTCPeerConnectionFactory.h |  7 ++++
 .../RTCPeerConnectionFactory.mm               | 33 ++++++++++++++++---
 3 files changed, 42 insertions(+), 4 deletions(-)

diff --git a/sdk/objc/api/peerconnection/RTCPeerConnectionFactory+Native.h b/sdk/objc/api/peerconnection/RTCPeerConnectionFactory+Native.h
index f361b9f0ea..b7f5e27ded 100644
--- a/sdk/objc/api/peerconnection/RTCPeerConnectionFactory+Native.h
+++ b/sdk/objc/api/peerconnection/RTCPeerConnectionFactory+Native.h
@@ -71,6 +71,12 @@ NS_ASSUME_NONNULL_BEGIN
     initWithEncoderFactory:(nullable id<RTC_OBJC_TYPE(RTCVideoEncoderFactory)>)encoderFactory
             decoderFactory:(nullable id<RTC_OBJC_TYPE(RTCVideoDecoderFactory)>)decoderFactory;
 
+- (instancetype)
+    initWithBypassVoiceProcessing:(BOOL)bypassVoiceProcessing
+                   encoderFactory:(nullable id<RTC_OBJC_TYPE(RTCVideoEncoderFactory)>)encoderFactory
+                   decoderFactory:
+                       (nullable id<RTC_OBJC_TYPE(RTCVideoDecoderFactory)>)decoderFactory;
+
 /** Initialize an RTCPeerConnection with a configuration, constraints, and
  *  dependencies.
  */
diff --git a/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.h b/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.h
index 5575af98c9..11845f7513 100644
--- a/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.h
+++ b/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.h
@@ -51,6 +51,13 @@ RTC_OBJC_EXPORT
             decoderFactory:(nullable id<RTC_OBJC_TYPE(RTCVideoDecoderFactory)>)decoderFactory
                audioDevice:(nullable id<RTC_OBJC_TYPE(RTCAudioDevice)>)audioDevice;
 
+/* Initialize object with bypass voice processing */
+- (instancetype)
+    initWithBypassVoiceProcessing:(BOOL)bypassVoiceProcessing
+                   encoderFactory:(nullable id<RTC_OBJC_TYPE(RTCVideoEncoderFactory)>)encoderFactory
+                   decoderFactory:
+                       (nullable id<RTC_OBJC_TYPE(RTCVideoDecoderFactory)>)decoderFactory;
+
 /** Initialize an RTCAudioSource with constraints. */
 - (RTC_OBJC_TYPE(RTCAudioSource) *)audioSourceWithConstraints:
     (nullable RTC_OBJC_TYPE(RTCMediaConstraints) *)constraints;
diff --git a/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.mm b/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.mm
index 62b55543d4..2617b6caaf 100644
--- a/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.mm
+++ b/sdk/objc/api/peerconnection/RTCPeerConnectionFactory.mm
@@ -60,9 +60,9 @@ @implementation RTC_OBJC_TYPE (RTCPeerConnectionFactory) {
 
 @synthesize nativeFactory = _nativeFactory;
 
-- (rtc::scoped_refptr<webrtc::AudioDeviceModule>)audioDeviceModule {
+- (rtc::scoped_refptr<webrtc::AudioDeviceModule>)audioDeviceModule:(BOOL)bypassVoiceProcessing {
 #if defined(WEBRTC_IOS)
-  return webrtc::CreateAudioDeviceModule();
+  return webrtc::CreateAudioDeviceModule(bypassVoiceProcessing);
 #else
   return nullptr;
 #endif
@@ -76,7 +76,7 @@ - (instancetype)init {
                                             RTCVideoEncoderFactoryH264) alloc] init])
               nativeVideoDecoderFactory:webrtc::ObjCToNativeVideoDecoderFactory([[RTC_OBJC_TYPE(
                                             RTCVideoDecoderFactoryH264) alloc] init])
-                      audioDeviceModule:[self audioDeviceModule].get()
+                      audioDeviceModule:[self audioDeviceModule:false].get()
                   audioProcessingModule:nullptr];
 }
 
@@ -105,7 +105,7 @@ - (instancetype)init {
   if (audioDevice) {
     audio_device_module = webrtc::CreateAudioDeviceModule(audioDevice);
   } else {
-    audio_device_module = [self audioDeviceModule];
+    audio_device_module = [self audioDeviceModule:false];
   }
   return [self initWithNativeAudioEncoderFactory:webrtc::CreateBuiltinAudioEncoderFactory()
                        nativeAudioDecoderFactory:webrtc::CreateBuiltinAudioDecoderFactory()
@@ -116,6 +116,31 @@ - (instancetype)init {
 #endif
 }
 
+- (instancetype)
+    initWithBypassVoiceProcessing:(BOOL)bypassVoiceProcessing
+                   encoderFactory:(nullable id<RTC_OBJC_TYPE(RTCVideoEncoderFactory)>)encoderFactory
+                   decoderFactory:
+                       (nullable id<RTC_OBJC_TYPE(RTCVideoDecoderFactory)>)decoderFactory {
+#ifdef HAVE_NO_MEDIA
+  return [self initWithNoMedia];
+#else
+  std::unique_ptr<webrtc::VideoEncoderFactory> native_encoder_factory;
+  std::unique_ptr<webrtc::VideoDecoderFactory> native_decoder_factory;
+  if (encoderFactory) {
+    native_encoder_factory = webrtc::ObjCToNativeVideoEncoderFactory(encoderFactory);
+  }
+  if (decoderFactory) {
+    native_decoder_factory = webrtc::ObjCToNativeVideoDecoderFactory(decoderFactory);
+  }
+  return [self initWithNativeAudioEncoderFactory:webrtc::CreateBuiltinAudioEncoderFactory()
+                       nativeAudioDecoderFactory:webrtc::CreateBuiltinAudioDecoderFactory()
+                       nativeVideoEncoderFactory:std::move(native_encoder_factory)
+                       nativeVideoDecoderFactory:std::move(native_decoder_factory)
+                               audioDeviceModule:[self audioDeviceModule:bypassVoiceProcessing].get()
+                           audioProcessingModule:nullptr];
+#endif
+}
+
 - (instancetype)initNative {
   if (self = [super init]) {
     _networkThread = rtc::Thread::CreateWithSocketServer();