99b275d126
This CL attempts to do separation of concerns by introducing a simple class that only handles JNI wrapping of a C++ AndroidVideoTrackSource. This layer can be easiliy mocked out in Java unit tests. Bug: webrtc:10247 Change-Id: Idbdbfde6d3e00b64f3f310f76505801fa496580d Reviewed-on: https://webrtc-review.googlesource.com/c/121562 Commit-Queue: Magnus Jedvert <magjed@webrtc.org> Reviewed-by: Sami Kalliomäki <sakal@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26556}
97 lines
3.6 KiB
Java
97 lines
3.6 KiB
Java
/*
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* Copyright 2013 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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package org.webrtc;
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import android.support.annotation.Nullable;
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/**
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* Java wrapper of native AndroidVideoTrackSource.
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*/
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public class VideoSource extends MediaSource {
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/** Simple aspect ratio clas for use in constraining output format. */
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public static class AspectRatio {
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public static final AspectRatio UNDEFINED = new AspectRatio(/* width= */ 0, /* height= */ 0);
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public final int width;
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public final int height;
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public AspectRatio(int width, int height) {
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this.width = width;
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this.height = height;
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}
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}
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private final NativeAndroidVideoTrackSource nativeAndroidVideoTrackSource;
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private final CapturerObserver capturerObserver = new CapturerObserver() {
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@Override
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public void onCapturerStarted(boolean success) {
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nativeAndroidVideoTrackSource.setState(success);
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}
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@Override
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public void onCapturerStopped() {
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nativeAndroidVideoTrackSource.setState(/* isLive= */ false);
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}
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@Override
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public void onFrameCaptured(VideoFrame frame) {
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nativeAndroidVideoTrackSource.onFrameCaptured(frame);
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}
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};
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public VideoSource(long nativeSource) {
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super(nativeSource);
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this.nativeAndroidVideoTrackSource = new NativeAndroidVideoTrackSource(nativeSource);
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}
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/**
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* Calling this function will cause frames to be scaled down to the requested resolution. Also,
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* frames will be cropped to match the requested aspect ratio, and frames will be dropped to match
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* the requested fps. The requested aspect ratio is orientation agnostic and will be adjusted to
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* maintain the input orientation, so it doesn't matter if e.g. 1280x720 or 720x1280 is requested.
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*/
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public void adaptOutputFormat(int width, int height, int fps) {
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final int maxSide = Math.max(width, height);
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final int minSide = Math.min(width, height);
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adaptOutputFormat(maxSide, minSide, minSide, maxSide, fps);
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}
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/**
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* Same as above, but allows setting two different target resolutions depending on incoming
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* frame orientation. This gives more fine-grained control and can e.g. be used to force landscape
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* video to be cropped to portrait video.
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*/
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public void adaptOutputFormat(
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int landscapeWidth, int landscapeHeight, int portraitWidth, int portraitHeight, int fps) {
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adaptOutputFormat(new AspectRatio(landscapeWidth, landscapeHeight),
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/* maxLandscapePixelCount= */ landscapeWidth * landscapeHeight,
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new AspectRatio(portraitWidth, portraitHeight),
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/* maxPortraitPixelCount= */ portraitWidth * portraitHeight, fps);
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}
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/** Same as above, with even more control as each constraint is optional. */
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public void adaptOutputFormat(AspectRatio targetLandscapeAspectRatio,
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@Nullable Integer maxLandscapePixelCount, AspectRatio targetPortraitAspectRatio,
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@Nullable Integer maxPortraitPixelCount, @Nullable Integer maxFps) {
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nativeAndroidVideoTrackSource.adaptOutputFormat(targetLandscapeAspectRatio,
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maxLandscapePixelCount, targetPortraitAspectRatio, maxPortraitPixelCount, maxFps);
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}
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public CapturerObserver getCapturerObserver() {
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return capturerObserver;
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}
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/** Returns a pointer to webrtc::VideoTrackSourceInterface. */
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long getNativeVideoTrackSource() {
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return getNativeMediaSource();
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}
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}
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