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

webrtc/sdk/android/src/jni/pc/java_native_conversion.h

 /*
  *  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.
  */
 
-#ifndef WEBRTC_SDK_ANDROID_SRC_JNI_RTCSTATSCOLLECTORCALLBACKWRAPPER_H_
-#define WEBRTC_SDK_ANDROID_SRC_JNI_RTCSTATSCOLLECTORCALLBACKWRAPPER_H_
+#ifndef WEBRTC_SDK_ANDROID_SRC_JNI_PC_JAVA_NATIVE_CONVERSION_H_
+#define WEBRTC_SDK_ANDROID_SRC_JNI_PC_JAVA_NATIVE_CONVERSION_H_
 
-#include <jni.h>
+#include <vector>
 
+#include "webrtc/api/datachannelinterface.h"
+#include "webrtc/api/jsep.h"
+#include "webrtc/api/jsepicecandidate.h"
+#include "webrtc/api/mediastreaminterface.h"
+#include "webrtc/api/mediatypes.h"
 #include "webrtc/api/peerconnectioninterface.h"
+#include "webrtc/api/rtpparameters.h"
+#include "webrtc/rtc_base/sslidentity.h"
 #include "webrtc/sdk/android/src/jni/jni_helpers.h"
 
+// This file contains helper methods for converting between simple C++ and Java
+// PeerConnection-related structures. Similar to some methods in jni_helpers.h,
+// but specifically for structures tied to the PeerConnection API.
+
 namespace webrtc_jni {
 
-// Adapter for a Java RTCStatsCollectorCallback presenting a C++
-// RTCStatsCollectorCallback and dispatching the callback from C++ back to
-// Java.
-class RTCStatsCollectorCallbackWrapper
-    : public webrtc::RTCStatsCollectorCallback {
- public:
-  RTCStatsCollectorCallbackWrapper(JNIEnv* jni, jobject j_callback);
+webrtc::DataChannelInit JavaToNativeDataChannelInit(JNIEnv* jni,
+                                                    jobject j_init);
 
-  void OnStatsDelivered(
-      const rtc::scoped_refptr<const webrtc::RTCStatsReport>& report) override;
+cricket::MediaType JavaToNativeMediaType(JNIEnv* jni, jobject j_media_type);
 
- private:
-  // Helper functions for converting C++ RTCStatsReport to Java equivalent.
-  jobject ReportToJava(
-      JNIEnv* jni,
-      const rtc::scoped_refptr<const webrtc::RTCStatsReport>& report);
-  jobject StatsToJava(JNIEnv* jni, const webrtc::RTCStats& stats);
-  jobject MemberToJava(JNIEnv* jni,
-                       const webrtc::RTCStatsMemberInterface* member);
+jobject NativeToJavaMediaType(JNIEnv* jni, cricket::MediaType media_type);
 
-  const ScopedGlobalRef<jobject> j_callback_global_;
-  const ScopedGlobalRef<jclass> j_callback_class_;
-  const jclass j_stats_report_class_;
-  const jmethodID j_stats_report_ctor_;
-  const jclass j_stats_class_;
-  const jmethodID j_stats_ctor_;
-  const jclass j_linked_hash_map_class_;
-  const jmethodID j_linked_hash_map_ctor_;
-  const jmethodID j_linked_hash_map_put_;
-  const jclass j_boolean_class_;
-  const jmethodID j_boolean_ctor_;
-  const jclass j_integer_class_;
-  const jmethodID j_integer_ctor_;
-  const jclass j_long_class_;
-  const jmethodID j_long_ctor_;
-  const jclass j_big_integer_class_;
-  const jmethodID j_big_integer_ctor_;
-  const jclass j_double_class_;
-  const jmethodID j_double_ctor_;
-  const jclass j_string_class_;
-};
+cricket::Candidate JavaToNativeCandidate(JNIEnv* jni, jobject j_candidate);
+
+jobject NativeToJavaCandidate(JNIEnv* jni,
+                              jclass* candidate_class,
+                              const cricket::Candidate& candidate);
+
+jobjectArray NativeToJavaCandidateArray(
+    JNIEnv* jni,
+    const std::vector<cricket::Candidate>& candidates);
+
+webrtc::SessionDescriptionInterface* JavaToNativeSessionDescription(
+    JNIEnv* jni,
+    jobject j_sdp);
+
+jobject NativeToJavaSessionDescription(
+    JNIEnv* jni,
+    const webrtc::SessionDescriptionInterface* desc);
+
+webrtc::PeerConnectionFactoryInterface::Options
+JavaToNativePeerConnectionFactoryOptions(JNIEnv* jni, jobject options);
+
+/*****************************************************
+ * Below are all things that go into RTCConfiguration.
+ *****************************************************/
+webrtc::PeerConnectionInterface::IceTransportsType
+JavaToNativeIceTransportsType(JNIEnv* jni, jobject j_ice_transports_type);
+
+webrtc::PeerConnectionInterface::BundlePolicy JavaToNativeBundlePolicy(
+    JNIEnv* jni,
+    jobject j_bundle_policy);
+
+webrtc::PeerConnectionInterface::RtcpMuxPolicy JavaToNativeRtcpMuxPolicy(
+    JNIEnv* jni,
+    jobject j_rtcp_mux_policy);
+
+webrtc::PeerConnectionInterface::TcpCandidatePolicy
+JavaToNativeTcpCandidatePolicy(JNIEnv* jni, jobject j_tcp_candidate_policy);
+
+webrtc::PeerConnectionInterface::CandidateNetworkPolicy
+JavaToNativeCandidateNetworkPolicy(JNIEnv* jni,
+                                   jobject j_candidate_network_policy);
+
+rtc::KeyType JavaToNativeKeyType(JNIEnv* jni, jobject j_key_type);
+
+webrtc::PeerConnectionInterface::ContinualGatheringPolicy
+JavaToNativeContinualGatheringPolicy(JNIEnv* jni, jobject j_gathering_policy);
+
+webrtc::PeerConnectionInterface::TlsCertPolicy JavaToNativeTlsCertPolicy(
+    JNIEnv* jni,
+    jobject j_ice_server_tls_cert_policy);
+
+void JavaToNativeIceServers(
+    JNIEnv* jni,
+    jobject j_ice_servers,
+    webrtc::PeerConnectionInterface::IceServers* ice_servers);
+
+void JavaToNativeRTCConfiguration(
+    JNIEnv* jni,
+    jobject j_rtc_config,
+    webrtc::PeerConnectionInterface::RTCConfiguration* rtc_config);
+
+/*********************************************************
+ * RtpParameters, used for RtpSender and RtpReceiver APIs.
+ *********************************************************/
+void JavaToNativeRtpParameters(JNIEnv* jni,
+                               jobject j_parameters,
+                               webrtc::RtpParameters* parameters);
+
+jobject NativeToJavaRtpParameters(JNIEnv* jni,
+                                  const webrtc::RtpParameters& parameters);
 
 }  // namespace webrtc_jni
 
-#endif  // WEBRTC_SDK_ANDROID_SRC_JNI_RTCSTATSCOLLECTORCALLBACKWRAPPER_H_
+#endif  // WEBRTC_SDK_ANDROID_SRC_JNI_PC_JAVA_NATIVE_CONVERSION_H_