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/*
* Copyright 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 android.content.Context;
// Base interface for all VideoCapturers to implement.
public interface VideoCapturer {
/**
* This function is used to initialize the camera thread, the android application context, and the
* capture observer. It will be called only once and before any startCapture() request. The
* camera thread is guaranteed to be valid until dispose() is called. If the VideoCapturer wants
* to deliver texture frames, it should do this by rendering on the SurfaceTexture in
* {@code surfaceTextureHelper}, register itself as a listener, and forward the frames to
* CapturerObserver.onFrameCaptured(). The caller still has ownership of {@code
* surfaceTextureHelper} and is responsible for making sure surfaceTextureHelper.dispose() is
* called. This also means that the caller can reuse the SurfaceTextureHelper to initialize a new
* VideoCapturer once the previous VideoCapturer has been disposed.
*/
void initialize(SurfaceTextureHelper surfaceTextureHelper, Context applicationContext,
CapturerObserver capturerObserver);
/**
* Start capturing frames in a format that is as close as possible to {@code width x height} and
* {@code framerate}.
*/
void startCapture(int width, int height, int framerate);
/**
* Stop capturing. This function should block until capture is actually stopped.
*/
void stopCapture() throws InterruptedException;
void changeCaptureFormat(int width, int height, int framerate);
/**
* Perform any final cleanup here. No more capturing will be done after this call.
*/
void dispose();
/**
* @return true if-and-only-if this is a screen capturer.
*/
boolean isScreencast();
}