Compile java layer of WebRTC

Author: vkryl

app/build.gradle.kts

@@ -69,6 +69,13 @@ android {
 
   sourceSets.getByName("main") {
     java.srcDirs("./src/google/java") // TODO: Huawei & FOSS editions
+    java.srcDirs(
+      "./jni/third_party/webrtc/rtc_base/java/src",
+      "./jni/third_party/webrtc/modules/audio_device/android/java/src",
+      "./jni/third_party/webrtc/sdk/android/api",
+      "./jni/third_party/webrtc/sdk/android/src/java",
+      "../thirdparty/WebRTC/src/java"
+    )
     Config.EXOPLAYER_EXTENSIONS.forEach { module ->
       java.srcDirs("../thirdparty/ExoPlayer/extensions/${module}/src/main/java")
     }

app/jni/BuildTgCalls.cmake

@@ -7,3 +7,4 @@ set(TGCALLS_DIR "${THIRDPARTY_DIR}/tgcalls")
 
 # Source files list:
 # https://github.com/TelegramMessenger/Telegram-iOS/blob/930d1fcc46e39830e6d590986a6a838c3ff49e27/submodules/TgVoipWebrtc/BUILD
+

thirdparty/WebRTC/src/java/org/webrtc/NetworkPreference.java

@@ -0,0 +1,25 @@
+
+// Copyright 2022 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file is autogenerated by
+//     java_cpp_enum.py
+// From
+//     webrtc/rtc_base/network_monitor.h
+
+package org.webrtc;
+
+import androidx.annotation.IntDef;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+@IntDef({
+  NetworkPreference.NEUTRAL, NetworkPreference.NOT_PREFERRED
+})
+@Retention(RetentionPolicy.SOURCE)
+public @interface NetworkPreference {
+  int NEUTRAL = 0;
+  int NOT_PREFERRED = -1;
+}

thirdparty/WebRTC/src/java/org/webrtc/Priority.java

@@ -0,0 +1,28 @@
+
+// Copyright 2022 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file is autogenerated by
+//     java_cpp_enum.py
+// From
+//     webrtc/api/priority.h
+
+package org.webrtc;
+
+import androidx.annotation.IntDef;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+@IntDef({
+  Priority.VERY_LOW, Priority.LOW,
+  Priority.MEDIUM, Priority.HIGH
+})
+@Retention(RetentionPolicy.SOURCE)
+public @interface Priority {
+  int VERY_LOW = 0;
+  int LOW = 1;
+  int MEDIUM = 2;
+  int HIGH = 3;
+}

thirdparty/WebRTC/src/java/org/webrtc/VideoFrameBufferType.java

@@ -0,0 +1,33 @@
+
+// Copyright 2022 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file is autogenerated by
+//     java_cpp_enum.py
+// From
+//     webrtc/api/video/video_frame_buffer.h
+
+package org.webrtc;
+
+import androidx.annotation.IntDef;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+@IntDef({
+  VideoFrameBufferType.NATIVE, VideoFrameBufferType.I420, VideoFrameBufferType.I420A,
+  VideoFrameBufferType.I422, VideoFrameBufferType.I444, VideoFrameBufferType.I010,
+  VideoFrameBufferType.I210, VideoFrameBufferType.NV12
+})
+@Retention(RetentionPolicy.SOURCE)
+public @interface VideoFrameBufferType {
+  int NATIVE = 0;
+  int I420 = 1;
+  int I420A = 2;
+  int I422 = 3;
+  int I444 = 4;
+  int I010 = 5;
+  int I210 = 6;
+  int NV12 = 7;
+}