Add support for m92.

README.md

@@ -10,28 +10,29 @@ Use the WebRTC branch M92 to compile.
 
 ## Usage
 
-- Download webrtc source into webrtc_src_m74, Please refer to https://webrtc.github.io/webrtc-org/native-code/development/.
+- Download webrtc source into webrtc_src_m92, Please refer to https://webrtc.github.io/webrtc-org/native-code/development/.
 
 ```
-cd webrtc_src_m74/src
+cd webrtc_src_m92/src
 git clone https://github.com/cloudwebrtc/libwebrtc.git
 ```
 
 - Modify webrtc's src/BUILD.gn file and add libwebrtc to group("default").
 
 ```patch
 diff --git a/BUILD.gn b/BUILD.gn
-index bfe6d02ab9..2c0eaaa631 100644
+index e60d7dd0bd..b9b6acab8b 100644
 --- a/BUILD.gn
 +++ b/BUILD.gn
-@@ -30,6 +30,7 @@ if (!build_with_chromium) {
+@@ -29,7 +29,7 @@ if (!build_with_chromium) {
+   # 'ninja default' and then 'ninja all', the second build should do no work.
+   group("default") {
      testonly = true
-     deps = [
-       ":webrtc",
-+      "//libwebrtc:libwebrtc",
-     ]
+-    deps = [ ":webrtc" ]
++    deps = [ ":webrtc","//libwebrtc:libwebrtc", ]
      if (rtc_build_examples) {
        deps += [ "examples" ]
+     }
 ```
 
 - Compile

include/base/portable.h

@@ -34,28 +34,6 @@ namespace portable {
 #ifndef _TRUNCATE
 #define _TRUNCATE ((size_t)-1)
 #endif  // _TRUNCATE
-static int strncpy_safe(char* dest,
-                        size_t numberOfElements,
-                        const char* src,
-                        size_t count) {
-  if (!count)
-    return 0;
-  if (!dest || !src || !numberOfElements)
-    return -1;
-  size_t end = count != _TRUNCATE && count < numberOfElements
-                   ? count
-                   : numberOfElements - 1;
-  size_t i = 0;
-  for (; i < end && src[i]; ++i) {
-    dest[i] = src[i];
-  }
-  if (!src[i] || end == count || count == _TRUNCATE) {
-    dest[i] = '\0';
-    return 0;
-  }
-  dest[0] = '\0';
-  return -1;
-}
 #endif
 
 #define PORTABLE_STRING_BUF_SIZE 48

src/base/portable.cc

@@ -1,6 +1,30 @@
 #include "include/base/portable.h"
 
 namespace portable {
+
+static int strncpy_safe(char* dest,
+                        size_t numberOfElements,
+                        const char* src,
+                        size_t count) {
+  if (!count)
+    return 0;
+  if (!dest || !src || !numberOfElements)
+    return -1;
+  size_t end = count != _TRUNCATE && count < numberOfElements
+                   ? count
+                   : numberOfElements - 1;
+  size_t i = 0;
+  for (; i < end && src[i]; ++i) {
+    dest[i] = src[i];
+  }
+  if (!src[i] || end == count || count == _TRUNCATE) {
+    dest[i] = '\0';
+    return 0;
+  }
+  dest[0] = '\0';
+  return -1;
+}
+
 string::string() : m_dynamic(0), m_length(0) {
   m_buf[0] = 0;
 }

src/rtc_desktop_device_impl.cc

@@ -10,7 +10,9 @@ DesktopDeviceImpl::DesktopDeviceImpl() {}
 webrtc::DesktopCaptureOptions DesktopDeviceImpl::CreateOptions() {
   webrtc::DesktopCaptureOptions options =
       webrtc::DesktopCaptureOptions::CreateDefault();
+#ifdef _MSC_VER
   options.set_allow_directx_capturer(false);
+#endif
   return options;
 }
 

src/rtc_peerconnection_impl.cc

@@ -396,14 +396,17 @@ bool RTCPeerConnectionImpl::Initialize() {
   // options.network_ignore_mask |= ADAPTER_TYPE_CELLULAR;
   rtc_peerconnection_factory_->SetOptions(options);
 
-  rtc_peerconnection_ = rtc_peerconnection_factory_->CreatePeerConnection(
-      config, nullptr, nullptr, this);
+  webrtc::PeerConnectionDependencies dependencies(this);
+  auto result =
+      rtc_peerconnection_factory_->CreatePeerConnectionOrError(config, std::move(dependencies));
 
-  if (rtc_peerconnection_.get() == nullptr) {
+  if (!result.ok()) {
     RTC_LOG(WARNING) << "CreatePeerConnection failed";
     Close();
     return false;
   }
+
+  rtc_peerconnection_ = result.MoveValue();
   return true;
 }