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1 /* | |
2 * libjingle | |
3 * Copyright 2015 Google Inc. | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions are met: | |
7 * | |
8 * 1. Redistributions of source code must retain the above copyright notice, | |
9 * this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
11 * this list of conditions and the following disclaimer in the documentation | |
12 * and/or other materials provided with the distribution. | |
13 * 3. The name of the author may not be used to endorse or promote products | |
14 * derived from this software without specific prior written permission. | |
15 * | |
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
26 * | |
27 */ | |
28 | |
29 #ifndef TALK_APP_WEBRTC_JAVA_JNI_ANDROIDVIDEOCAPTURER_JNI_H_ | |
30 #define TALK_APP_WEBRTC_JAVA_JNI_ANDROIDVIDEOCAPTURER_JNI_H_ | |
31 | |
32 #include <string> | |
33 | |
34 #include "talk/app/webrtc/androidvideocapturer.h" | |
35 #include "talk/app/webrtc/java/jni/jni_helpers.h" | |
36 #include "webrtc/base/asyncinvoker.h" | |
37 #include "webrtc/base/criticalsection.h" | |
38 #include "webrtc/base/thread_checker.h" | |
39 #include "webrtc/common_video/include/i420_buffer_pool.h" | |
40 | |
41 namespace webrtc_jni { | |
42 | |
43 struct NativeHandleImpl; | |
44 class SurfaceTextureHelper; | |
45 | |
46 // AndroidVideoCapturerJni implements AndroidVideoCapturerDelegate. | |
47 // The purpose of the delegate is to hide the JNI specifics from the C++ only | |
48 // AndroidVideoCapturer. | |
49 class AndroidVideoCapturerJni : public webrtc::AndroidVideoCapturerDelegate { | |
50 public: | |
51 static int SetAndroidObjects(JNIEnv* jni, jobject appliction_context); | |
52 | |
53 AndroidVideoCapturerJni(JNIEnv* jni, | |
54 jobject j_video_capturer, | |
55 jobject j_surface_texture_helper); | |
56 | |
57 void Start(int width, int height, int framerate, | |
58 webrtc::AndroidVideoCapturer* capturer) override; | |
59 void Stop() override; | |
60 | |
61 std::string GetSupportedFormats() override; | |
62 | |
63 // Called from VideoCapturerAndroid::NativeObserver on a Java thread. | |
64 void OnCapturerStarted(bool success); | |
65 void OnMemoryBufferFrame(void* video_frame, int length, int width, | |
66 int height, int rotation, int64_t timestamp_ns); | |
67 void OnTextureFrame(int width, int height, int rotation, int64_t timestamp_ns, | |
68 const NativeHandleImpl& handle); | |
69 void OnOutputFormatRequest(int width, int height, int fps); | |
70 | |
71 protected: | |
72 ~AndroidVideoCapturerJni(); | |
73 | |
74 private: | |
75 JNIEnv* jni(); | |
76 | |
77 // To avoid deducing Args from the 3rd parameter of AsyncCapturerInvoke. | |
78 template <typename T> | |
79 struct Identity { | |
80 typedef T type; | |
81 }; | |
82 | |
83 // Helper function to make safe asynchronous calls to |capturer_|. The calls | |
84 // are not guaranteed to be delivered. | |
85 template <typename... Args> | |
86 void AsyncCapturerInvoke( | |
87 const char* method_name, | |
88 void (webrtc::AndroidVideoCapturer::*method)(Args...), | |
89 typename Identity<Args>::type... args); | |
90 | |
91 const ScopedGlobalRef<jobject> j_video_capturer_; | |
92 const ScopedGlobalRef<jclass> j_video_capturer_class_; | |
93 const ScopedGlobalRef<jclass> j_observer_class_; | |
94 | |
95 // Used on the Java thread running the camera. | |
96 webrtc::I420BufferPool buffer_pool_; | |
97 rtc::scoped_refptr<SurfaceTextureHelper> surface_texture_helper_; | |
98 rtc::ThreadChecker thread_checker_; | |
99 | |
100 // |capturer| is a guaranteed to be a valid pointer between a call to | |
101 // AndroidVideoCapturerDelegate::Start | |
102 // until AndroidVideoCapturerDelegate::Stop. | |
103 rtc::CriticalSection capturer_lock_; | |
104 webrtc::AndroidVideoCapturer* capturer_ GUARDED_BY(capturer_lock_); | |
105 // |invoker_| is used to communicate with |capturer_| on the thread Start() is | |
106 // called on. | |
107 rtc::scoped_ptr<rtc::GuardedAsyncInvoker> invoker_ GUARDED_BY(capturer_lock_); | |
108 | |
109 static jobject application_context_; | |
110 | |
111 RTC_DISALLOW_COPY_AND_ASSIGN(AndroidVideoCapturerJni); | |
112 }; | |
113 | |
114 } // namespace webrtc_jni | |
115 | |
116 #endif // TALK_APP_WEBRTC_JAVA_JNI_ANDROIDVIDEOCAPTURER_JNI_H_ | |
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