blob: 00c7d918387ad139bd83a1ccf1ae8b6c8053a8b1 [file] [log] [blame]
* Copyright 2015 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.
#include <memory>
#include <string>
#include "webrtc/api/androidvideocapturer.h"
#include "webrtc/api/java/jni/jni_helpers.h"
#include "webrtc/base/asyncinvoker.h"
#include "webrtc/base/constructormagic.h"
#include "webrtc/base/criticalsection.h"
#include "webrtc/base/thread_checker.h"
#include "webrtc/common_video/include/i420_buffer_pool.h"
namespace webrtc_jni {
struct NativeHandleImpl;
class SurfaceTextureHelper;
// AndroidVideoCapturerJni implements AndroidVideoCapturerDelegate.
// The purpose of the delegate is to hide the JNI specifics from the C++ only
// AndroidVideoCapturer.
class AndroidVideoCapturerJni : public webrtc::AndroidVideoCapturerDelegate {
static int SetAndroidObjects(JNIEnv* jni, jobject appliction_context);
AndroidVideoCapturerJni(JNIEnv* jni,
jobject j_video_capturer,
jobject j_egl_context);
void Start(int width, int height, int framerate,
webrtc::AndroidVideoCapturer* capturer) override;
void Stop() override;
std::vector<cricket::VideoFormat> GetSupportedFormats() override;
// Called from VideoCapturer::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, int rotation, int64_t timestamp_ns,
const NativeHandleImpl& handle);
void OnOutputFormatRequest(int width, int height, int fps);
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 rtc::Location& posted_from,
void (webrtc::AndroidVideoCapturer::*method)(Args...),
typename Identity<Args>::type... args);
const ScopedGlobalRef<jobject> j_video_capturer_;
const ScopedGlobalRef<jclass> j_video_capturer_class_;
const ScopedGlobalRef<jclass> j_observer_class_;
// Used on the Java thread running the camera.
webrtc::I420BufferPool pre_scale_pool_;
webrtc::I420BufferPool post_scale_pool_;
rtc::scoped_refptr<SurfaceTextureHelper> surface_texture_helper_;
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.
std::unique_ptr<rtc::GuardedAsyncInvoker> invoker_ GUARDED_BY(capturer_lock_);
static jobject application_context_;
} // namespace webrtc_jni