Relanding: Break peerconnection_jni.cc into multiple files, in "pc" directory.

webrtc/sdk/android/src/jni/pc/datachannel_jni.cc

+/*
+ *  Copyright 2017 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 <memory>
+
+#include "webrtc/api/datachannelinterface.h"
+#include "webrtc/sdk/android/src/jni/jni_helpers.h"
+#include "webrtc/sdk/android/src/jni/pc/datachannelobserver_jni.h"
+
+namespace webrtc_jni {
+
+static webrtc::DataChannelInterface* ExtractNativeDC(JNIEnv* jni,
+                                                     jobject j_dc) {
+  jfieldID native_dc_id =
+      GetFieldID(jni, GetObjectClass(jni, j_dc), "nativeDataChannel", "J");
+  jlong j_d = GetLongField(jni, j_dc, native_dc_id);
+  return reinterpret_cast<webrtc::DataChannelInterface*>(j_d);
+}
+
+JOW(jlong, DataChannel_registerObserverNative)
+(JNIEnv* jni, jobject j_dc, jobject j_observer) {
+  std::unique_ptr<DataChannelObserverJni> observer(
+      new DataChannelObserverJni(jni, j_observer));
+  ExtractNativeDC(jni, j_dc)->RegisterObserver(observer.get());
+  return jlongFromPointer(observer.release());
+}
+
+JOW(void, DataChannel_unregisterObserverNative)
+(JNIEnv* jni, jobject j_dc, jlong native_observer) {
+  ExtractNativeDC(jni, j_dc)->UnregisterObserver();
+  delete reinterpret_cast<DataChannelObserverJni*>(native_observer);
+}
+
+JOW(jstring, DataChannel_label)(JNIEnv* jni, jobject j_dc) {
+  return JavaStringFromStdString(jni, ExtractNativeDC(jni, j_dc)->label());
+}
+
+JOW(jint, DataChannel_id)(JNIEnv* jni, jobject j_dc) {
+  int id = ExtractNativeDC(jni, j_dc)->id();
+  RTC_CHECK_LE(id, std::numeric_limits<int32_t>::max())
+      << "id overflowed jint!";
+  return static_cast<jint>(id);
+}
+
+JOW(jobject, DataChannel_state)(JNIEnv* jni, jobject j_dc) {
+  return JavaEnumFromIndexAndClassName(jni, "DataChannel$State",
+                                       ExtractNativeDC(jni, j_dc)->state());
+}
+
+JOW(jlong, DataChannel_bufferedAmount)(JNIEnv* jni, jobject j_dc) {
+  uint64_t buffered_amount = ExtractNativeDC(jni, j_dc)->buffered_amount();
+  RTC_CHECK_LE(buffered_amount, std::numeric_limits<int64_t>::max())
+      << "buffered_amount overflowed jlong!";
+  return static_cast<jlong>(buffered_amount);
+}
+
+JOW(void, DataChannel_close)(JNIEnv* jni, jobject j_dc) {
+  ExtractNativeDC(jni, j_dc)->Close();
+}
+
+JOW(jboolean, DataChannel_sendNative)
+(JNIEnv* jni, jobject j_dc, jbyteArray data, jboolean binary) {
+  jbyte* bytes = jni->GetByteArrayElements(data, NULL);
+  bool ret = ExtractNativeDC(jni, j_dc)->Send(webrtc::DataBuffer(
+      rtc::CopyOnWriteBuffer(bytes, jni->GetArrayLength(data)), binary));
+  jni->ReleaseByteArrayElements(data, bytes, JNI_ABORT);
+  return ret;
+}
+
+JOW(void, DataChannel_dispose)(JNIEnv* jni, jobject j_dc) {
+  CHECK_RELEASE(ExtractNativeDC(jni, j_dc));
+}
+
+}  // namespace webrtc_jni