102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
/*
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* Copyright 2015 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_API_JAVA_JNI_ANDROIDVIDEOCAPTURER_JNI_H_
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#define WEBRTC_API_JAVA_JNI_ANDROIDVIDEOCAPTURER_JNI_H_
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#include <memory>
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#include <string>
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#include "webrtc/api/androidvideocapturer.h"
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#include "webrtc/api/java/jni/jni_helpers.h"
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#include "webrtc/base/asyncinvoker.h"
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#include "webrtc/base/constructormagic.h"
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#include "webrtc/base/criticalsection.h"
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#include "webrtc/base/thread_checker.h"
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#include "webrtc/common_video/include/i420_buffer_pool.h"
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namespace webrtc_jni {
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struct NativeHandleImpl;
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class SurfaceTextureHelper;
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// AndroidVideoCapturerJni implements AndroidVideoCapturerDelegate.
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// The purpose of the delegate is to hide the JNI specifics from the C++ only
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// AndroidVideoCapturer.
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class AndroidVideoCapturerJni : public webrtc::AndroidVideoCapturerDelegate {
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public:
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static int SetAndroidObjects(JNIEnv* jni, jobject appliction_context);
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AndroidVideoCapturerJni(JNIEnv* jni,
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jobject j_video_capturer,
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jobject j_egl_context);
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void Start(int width, int height, int framerate,
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webrtc::AndroidVideoCapturer* capturer) override;
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void Stop() override;
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std::vector<cricket::VideoFormat> GetSupportedFormats() override;
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// Called from VideoCapturer::NativeObserver on a Java thread.
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void OnCapturerStarted(bool success);
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void OnMemoryBufferFrame(void* video_frame, int length, int width,
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int height, int rotation, int64_t timestamp_ns);
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void OnTextureFrame(int width, int height, int rotation, int64_t timestamp_ns,
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const NativeHandleImpl& handle);
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void OnOutputFormatRequest(int width, int height, int fps);
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protected:
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~AndroidVideoCapturerJni();
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private:
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JNIEnv* jni();
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// To avoid deducing Args from the 3rd parameter of AsyncCapturerInvoke.
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template <typename T>
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struct Identity {
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typedef T type;
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};
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// Helper function to make safe asynchronous calls to |capturer_|. The calls
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// are not guaranteed to be delivered.
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template <typename... Args>
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void AsyncCapturerInvoke(
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const rtc::Location& posted_from,
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void (webrtc::AndroidVideoCapturer::*method)(Args...),
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typename Identity<Args>::type... args);
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const ScopedGlobalRef<jobject> j_video_capturer_;
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const ScopedGlobalRef<jclass> j_video_capturer_class_;
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const ScopedGlobalRef<jclass> j_observer_class_;
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// Used on the Java thread running the camera.
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webrtc::I420BufferPool pre_scale_pool_;
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webrtc::I420BufferPool post_scale_pool_;
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rtc::scoped_refptr<SurfaceTextureHelper> surface_texture_helper_;
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rtc::ThreadChecker thread_checker_;
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// |capturer| is a guaranteed to be a valid pointer between a call to
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// AndroidVideoCapturerDelegate::Start
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// until AndroidVideoCapturerDelegate::Stop.
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rtc::CriticalSection capturer_lock_;
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webrtc::AndroidVideoCapturer* capturer_ GUARDED_BY(capturer_lock_);
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// |invoker_| is used to communicate with |capturer_| on the thread Start() is
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// called on.
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std::unique_ptr<rtc::GuardedAsyncInvoker> invoker_ GUARDED_BY(capturer_lock_);
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static jobject application_context_;
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RTC_DISALLOW_COPY_AND_ASSIGN(AndroidVideoCapturerJni);
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};
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} // namespace webrtc_jni
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#endif // WEBRTC_API_JAVA_JNI_ANDROIDVIDEOCAPTURER_JNI_H_
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