sdk/android/src/jni/videotrack.cc

/*
 *  Copyright 2017 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 <jni.h>

#include "api/mediastreaminterface.h"
#include "rtc_base/logging.h"
#include "sdk/android/generated_video_jni/jni/VideoSink_jni.h"
#include "sdk/android/generated_video_jni/jni/VideoTrack_jni.h"
#include "sdk/android/src/jni/jni_helpers.h"
#include "sdk/android/src/jni/videoframe.h"

namespace webrtc {
namespace jni {

namespace {

class VideoSinkWrapper : public rtc::VideoSinkInterface<VideoFrame> {
 public:
  VideoSinkWrapper(JNIEnv* jni, const JavaRef<jobject>& j_sink);
  ~VideoSinkWrapper() override {}

 private:
  void OnFrame(const VideoFrame& frame) override;

  const ScopedJavaGlobalRef<jobject> j_sink_;
};

VideoSinkWrapper::VideoSinkWrapper(JNIEnv* jni, const JavaRef<jobject>& j_sink)
    : j_sink_(jni, j_sink) {}

void VideoSinkWrapper::OnFrame(const VideoFrame& frame) {
  JNIEnv* jni = AttachCurrentThreadIfNeeded();
  Java_VideoSink_onFrame(jni, j_sink_, NativeToJavaFrame(jni, frame));
}

}  // namespace

static void JNI_VideoTrack_AddSink(JNIEnv* jni,
                                   const JavaParamRef<jclass>&,
                                   jlong j_native_track,
                                   jlong j_native_sink) {
  reinterpret_cast<VideoTrackInterface*>(j_native_track)
      ->AddOrUpdateSink(
          reinterpret_cast<rtc::VideoSinkInterface<VideoFrame>*>(j_native_sink),
          rtc::VideoSinkWants());
}

static void JNI_VideoTrack_RemoveSink(JNIEnv* jni,
                                      const JavaParamRef<jclass>&,
                                      jlong j_native_track,
                                      jlong j_native_sink) {
  reinterpret_cast<VideoTrackInterface*>(j_native_track)
      ->RemoveSink(reinterpret_cast<rtc::VideoSinkInterface<VideoFrame>*>(
          j_native_sink));
}

static jlong JNI_VideoTrack_WrapSink(JNIEnv* jni,
                                     const JavaParamRef<jclass>&,
                                     const JavaParamRef<jobject>& sink) {
  return jlongFromPointer(new VideoSinkWrapper(jni, sink));
}

static void JNI_VideoTrack_FreeSink(JNIEnv* jni,
                                    const JavaParamRef<jclass>&,
                                    jlong j_native_sink) {
  delete reinterpret_cast<rtc::VideoSinkInterface<VideoFrame>*>(j_native_sink);
}

}  // namespace jni
}  // namespace webrtc