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/*
* libjingle
* Copyright 2015 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef TALK_APP_WEBRTC_JAVA_JNI_ANDROIDVIDEOCAPTURER_JNI_H_
#define TALK_APP_WEBRTC_JAVA_JNI_ANDROIDVIDEOCAPTURER_JNI_H_
#include <string>
#include "talk/app/webrtc/androidvideocapturer.h"
#include "talk/app/webrtc/java/jni/jni_helpers.h"
#include "webrtc/base/asyncinvoker.h"
#include "webrtc/base/criticalsection.h"
#include "webrtc/base/thread_checker.h"
namespace webrtc_jni {
class NativeTextureHandleImpl;
// AndroidVideoCapturerJni implements AndroidVideoCapturerDelegate.
// The purpose of the delegate is to hide the JNI specifics from the C++ only
// AndroidVideoCapturer.
class AndroidVideoCapturerJni : public webrtc::AndroidVideoCapturerDelegate {
public:
static int SetAndroidObjects(JNIEnv* jni, jobject appliction_context);
AndroidVideoCapturerJni(JNIEnv* jni, jobject j_video_capturer);
void Start(int width, int height, int framerate,
webrtc::AndroidVideoCapturer* capturer) override;
void Stop() override;
std::string GetSupportedFormats() override;
// Called from VideoCapturerAndroid::NativeObserver on a Java thread.
void OnCapturerStarted(bool success);
void OnMemoryBufferFrame(void* video_frame, int length, int width,
int height, int rotation, int64_t timestamp_ns);
void OnTextureFrame(int width, int height, int64_t timestamp_ns,
const NativeTextureHandleImpl& handle);
void OnOutputFormatRequest(int width, int height, int fps);
protected:
~AndroidVideoCapturerJni();
private:
void ReturnBuffer(int64_t time_stamp);
JNIEnv* jni();
// To avoid deducing Args from the 3rd parameter of AsyncCapturerInvoke.
template <typename T>
struct Identity {
typedef T type;
};
// Helper function to make safe asynchronous calls to |capturer_|. The calls
// are not guaranteed to be delivered.
template <typename... Args>
void AsyncCapturerInvoke(
const char* method_name,
void (webrtc::AndroidVideoCapturer::*method)(Args...),
typename Identity<Args>::type... args);
const ScopedGlobalRef<jobject> j_capturer_global_;
const ScopedGlobalRef<jclass> j_video_capturer_class_;
const ScopedGlobalRef<jclass> j_observer_class_;
rtc::ThreadChecker thread_checker_;
// |capturer| is a guaranteed to be a valid pointer between a call to
// AndroidVideoCapturerDelegate::Start
// until AndroidVideoCapturerDelegate::Stop.
rtc::CriticalSection capturer_lock_;
webrtc::AndroidVideoCapturer* capturer_ GUARDED_BY(capturer_lock_);
// |invoker_| is used to communicate with |capturer_| on the thread Start() is
// called on.
rtc::scoped_ptr<rtc::GuardedAsyncInvoker> invoker_ GUARDED_BY(capturer_lock_);
static jobject application_context_;
RTC_DISALLOW_COPY_AND_ASSIGN(AndroidVideoCapturerJni);
};
} // namespace webrtc_jni
#endif // TALK_APP_WEBRTC_JAVA_JNI_ANDROIDVIDEOCAPTURER_JNI_H_
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