Add libaom AV1 encoder java buildtargets.

Bug: webrtc:13573
Change-Id: Iec5d52a0e095e8b69427239ff7ff7b1a5b56db35
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/254581
Reviewed-by: Sergey Silkin <ssilkin@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36172}

sdk/android/BUILD.gn

@@ -499,6 +499,17 @@ if (is_android) {
     ]
   }
 
+  rtc_android_library("libaom_av1_encoder_java") {
+    visibility = [ "*" ]
+    sources = [ "api/org/webrtc/LibaomAv1Encoder.java" ]
+    deps = [
+      ":base_java",
+      ":video_api_java",
+      ":video_java",
+      "//rtc_base:base_java",
+    ]
+  }
+
   rtc_android_library("libaom_av1_java") {
     visibility = [ "*" ]
     sources = [
@@ -848,6 +859,18 @@ if (current_os == "linux" || is_android) {
     ]
   }
 
+  rtc_library("libaom_av1_encoder_jni") {
+    visibility = [ "*" ]
+    allow_poison = [ "software_video_codecs" ]
+    sources = [ "src/jni/libaom_av1_encoder.cc" ]
+    deps = [
+      ":base_jni",
+      ":generated_libaom_av1_encoder_jni",
+      ":video_jni",
+      "../../modules/video_coding/codecs/av1:libaom_av1_encoder",
+    ]
+  }
+
   rtc_library("libaom_av1_jni_if_supported") {
     visibility = [ "*" ]
     allow_poison = [ "software_video_codecs" ]
@@ -1313,6 +1336,13 @@ if (current_os == "linux" || is_android) {
     jni_generator_include = "//sdk/android/src/jni/jni_generator_helper.h"
   }
 
+  generate_jni("generated_libaom_av1_encoder_jni") {
+    sources = [ "api/org/webrtc/LibaomAv1Encoder.java" ]
+
+    namespace = "webrtc::jni"
+    jni_generator_include = "//sdk/android/src/jni/jni_generator_helper.h"
+  }
+
   generate_jni("generated_libaom_av1_jni_if_supported") {
     sources = [
       "api/org/webrtc/LibaomAv1Decoder.java",

sdk/android/api/org/webrtc/LibaomAv1Encoder.java

@@ -0,0 +1,25 @@
+/*
+ *  Copyright (c) 2021 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.
+ */
+
+package org.webrtc;
+
+public class LibaomAv1Encoder extends WrappedNativeVideoEncoder {
+  @Override
+  public long createNativeVideoEncoder() {
+    return nativeCreateEncoder();
+  }
+
+  static native long nativeCreateEncoder();
+
+  @Override
+  public boolean isHardwareEncoder() {
+    return false;
+  }
+}

sdk/android/src/jni/libaom_av1_encoder.cc

@@ -0,0 +1,25 @@
+/*
+ *  Copyright 2021 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.
+ */
+
+#include <jni.h>
+
+#include "modules/video_coding/codecs/av1/libaom_av1_encoder.h"
+#include "sdk/android/generated_libaom_av1_encoder_jni/LibaomAv1Encoder_jni.h"
+#include "sdk/android/src/jni/jni_helpers.h"
+
+namespace webrtc {
+namespace jni {
+
+static jlong JNI_LibaomAv1Encoder_CreateEncoder(JNIEnv* jni) {
+  return jlongFromPointer(webrtc::CreateLibaomAv1Encoder().release());
+}
+
+}  // namespace jni
+}  // namespace webrtc