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/*
* Copyright (c) 2013 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.
*/
package org.webrtc;
import org.webrtc.VideoFrame;
/**
* Used from native api and implements a simple VideoCapturer.CapturerObserver that feeds frames to
* a webrtc::jni::AndroidVideoTrackSource.
*/
class NativeCapturerObserver implements CapturerObserver {
private final NativeAndroidVideoTrackSource nativeAndroidVideoTrackSource;
@CalledByNative
public NativeCapturerObserver(long nativeSource) {
this.nativeAndroidVideoTrackSource = new NativeAndroidVideoTrackSource(nativeSource);
}
@Override
public void onCapturerStarted(boolean success) {
nativeAndroidVideoTrackSource.setState(success);
}
@Override
public void onCapturerStopped() {
nativeAndroidVideoTrackSource.setState(/* isLive= */ false);
}
@Override
public void onFrameCaptured(VideoFrame frame) {
final VideoProcessor.FrameAdaptationParameters parameters =
nativeAndroidVideoTrackSource.adaptFrame(frame);
if (parameters == null) {
// Drop frame.
return;
}
final VideoFrame.Buffer adaptedBuffer =
frame.getBuffer().cropAndScale(parameters.cropX, parameters.cropY, parameters.cropWidth,
parameters.cropHeight, parameters.scaleWidth, parameters.scaleHeight);
nativeAndroidVideoTrackSource.onFrameCaptured(
new VideoFrame(adaptedBuffer, frame.getRotation(), parameters.timestampNs));
adaptedBuffer.release();
}
}
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