Add Android Camera To Unity Plugin

webrtc/examples/unityplugin/jni_onload.cc

+/*
+ *  Copyright 2015 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>
+#undef JNIEXPORT
+#define JNIEXPORT __attribute__((visibility("default")))
+
+#include "webrtc/examples/unityplugin/classreferenceholder.h"
+#include "webrtc/rtc_base/ssladapter.h"
+#include "webrtc/sdk/android/src/jni/classreferenceholder.h"
+#include "webrtc/sdk/android/src/jni/jni_helpers.h"
+
+namespace webrtc_jni {
+
+extern "C" jint JNIEXPORT JNICALL JNI_OnLoad(JavaVM* jvm, void* reserved) {
+  jint ret = InitGlobalJniVariables(jvm);
+  RTC_DCHECK_GE(ret, 0);
+  if (ret < 0)
+    return -1;
+
+  RTC_CHECK(rtc::InitializeSSL()) << "Failed to InitializeSSL()";
+  LoadGlobalClassReferenceHolder();
+  unity_plugin::LoadGlobalClassReferenceHolder();
+
+  return ret;
+}
+
+extern "C" void JNIEXPORT JNICALL JNI_OnUnLoad(JavaVM* jvm, void* reserved) {
+  FreeGlobalClassReferenceHolder();
+  unity_plugin::FreeGlobalClassReferenceHolder();
+  RTC_CHECK(rtc::CleanupSSL()) << "Failed to CleanupSSL()";
+}
+
+}  // namespace webrtc_jni