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1 /* | |
2 * Copyright 2017 The WebRTC project authors. All Rights Reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 #ifndef WEBRTC_SDK_ANDROID_SRC_JNI_PC_SDPOBSERVER_JNI_H_ | |
12 #define WEBRTC_SDK_ANDROID_SRC_JNI_PC_SDPOBSERVER_JNI_H_ | |
13 | |
14 #include <memory> | |
15 #include <string> | |
16 | |
17 #include "webrtc/api/peerconnectioninterface.h" | |
18 #include "webrtc/sdk/android/src/jni/jni_helpers.h" | |
19 #include "webrtc/sdk/android/src/jni/pc/mediaconstraints_jni.h" | |
20 | |
21 namespace webrtc_jni { | |
22 | |
23 // Adapter for a Java StatsObserver presenting a C++ | |
24 // CreateSessionDescriptionObserver or SetSessionDescriptionObserver and | |
25 // dispatching the callback from C++ back to Java. | |
26 template <class T> // T is one of {Create,Set}SessionDescriptionObserver. | |
27 class SdpObserverJni : public T { | |
28 public: | |
29 SdpObserverJni(JNIEnv* jni, | |
30 jobject j_observer, | |
31 MediaConstraintsJni* constraints) | |
32 : constraints_(constraints), | |
33 j_observer_global_(jni, j_observer), | |
34 j_observer_class_(jni, GetObjectClass(jni, j_observer)) {} | |
35 | |
36 virtual ~SdpObserverJni() {} | |
37 | |
38 // Can't mark override because of templating. | |
39 virtual void OnSuccess() { | |
40 ScopedLocalRefFrame local_ref_frame(jni()); | |
41 jmethodID m = GetMethodID(jni(), *j_observer_class_, "onSetSuccess", "()V"); | |
42 jni()->CallVoidMethod(*j_observer_global_, m); | |
43 CHECK_EXCEPTION(jni()) << "error during CallVoidMethod"; | |
44 } | |
45 | |
46 // Can't mark override because of templating. | |
47 virtual void OnSuccess(webrtc::SessionDescriptionInterface* desc) { | |
48 ScopedLocalRefFrame local_ref_frame(jni()); | |
49 jmethodID m = GetMethodID(jni(), *j_observer_class_, "onCreateSuccess", | |
50 "(Lorg/webrtc/SessionDescription;)V"); | |
51 jobject j_sdp = NativeToJavaSessionDescription(jni(), desc); | |
52 jni()->CallVoidMethod(*j_observer_global_, m, j_sdp); | |
53 CHECK_EXCEPTION(jni()) << "error during CallVoidMethod"; | |
54 // OnSuccess transfers ownership of the description (there's a TODO to make | |
55 // it use unique_ptr...). | |
56 delete desc; | |
57 } | |
58 | |
59 protected: | |
60 // Common implementation for failure of Set & Create types, distinguished by | |
61 // |op| being "Set" or "Create". | |
62 void DoOnFailure(const std::string& op, const std::string& error) { | |
63 jmethodID m = GetMethodID(jni(), *j_observer_class_, "on" + op + "Failure", | |
64 "(Ljava/lang/String;)V"); | |
65 jstring j_error_string = JavaStringFromStdString(jni(), error); | |
66 jni()->CallVoidMethod(*j_observer_global_, m, j_error_string); | |
67 CHECK_EXCEPTION(jni()) << "error during CallVoidMethod"; | |
68 } | |
69 | |
70 JNIEnv* jni() { return AttachCurrentThreadIfNeeded(); } | |
71 | |
72 private: | |
73 std::unique_ptr<MediaConstraintsJni> constraints_; | |
74 const ScopedGlobalRef<jobject> j_observer_global_; | |
75 const ScopedGlobalRef<jclass> j_observer_class_; | |
76 }; | |
77 | |
78 class CreateSdpObserverJni | |
79 : public SdpObserverJni<webrtc::CreateSessionDescriptionObserver> { | |
80 public: | |
81 CreateSdpObserverJni(JNIEnv* jni, | |
82 jobject j_observer, | |
83 MediaConstraintsJni* constraints) | |
84 : SdpObserverJni(jni, j_observer, constraints) {} | |
85 | |
86 void OnFailure(const std::string& error) override { | |
87 ScopedLocalRefFrame local_ref_frame(jni()); | |
88 SdpObserverJni::DoOnFailure(std::string("Create"), error); | |
89 } | |
90 }; | |
91 | |
92 class SetSdpObserverJni | |
93 : public SdpObserverJni<webrtc::SetSessionDescriptionObserver> { | |
94 public: | |
95 SetSdpObserverJni(JNIEnv* jni, | |
96 jobject j_observer, | |
97 MediaConstraintsJni* constraints) | |
98 : SdpObserverJni(jni, j_observer, constraints) {} | |
99 | |
100 void OnFailure(const std::string& error) override { | |
101 ScopedLocalRefFrame local_ref_frame(jni()); | |
102 SdpObserverJni::DoOnFailure(std::string("Set"), error); | |
103 } | |
104 }; | |
105 | |
106 } // namespace webrtc_jni | |
107 | |
108 #endif // WEBRTC_SDK_ANDROID_SRC_JNI_PC_SDPOBSERVER_JNI_H_ | |
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