我正在编写一个Android应用程序,支持保存RAW / JPEG并同时录制视频。我在创建CameraCaptureSession
时尝试传递4个曲面:预览,2x ImageSaver
和qxxswpoi创建的1x PersistentInputSurface
。通过使用持久输入表面,我打算避免两次捕获之间的停止。
创建会话时,它失败了:
MediaCodec#createPersistentInputSurface
我试图取出所有其他表面,只留下W/CameraDevice-JV-0: Stream configuration failed due to: endConfigure:380: Camera 0: Unsupported set of inputs/outputs provided
Session 0: Failed to create capture session; configuration failed
,仍然失败。
PersistentInputSurface
@Override
public void onResume() {
super.onResume();
//Some other setups...
if (persistentRecorderSurface == null) {
persistentRecorderSurface = MediaCodec.createPersistentInputSurface();
}
startBackgroundThread();
startCamera();
if (mPreviewView.isAvailable()) {
configureTransform(mPreviewView.getWidth(), mPreviewView.getHeight());
} else {
mPreviewView.setSurfaceTextureListener(mSurfaceTextureListener);
}
if (mOrientationListener != null && mOrientationListener.canDetectOrientation()) {
mOrientationListener.enable();
}
}
在错误行之前查看系统日志行以确认是有帮助的,但最有可能的是:
在创建摄像头捕获会话之前,您需要将persistentRecorderSurface实际绑定到 private void createCameraPreviewSessionLocked() {
try {
SurfaceTexture texture = mPreviewView.getSurfaceTexture();
texture.setDefaultBufferSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
Surface surface = new Surface(texture);
mPreviewRequestBuilder = mBackCameraDevice.createCaptureRequest(
CameraDevice.TEMPLATE_PREVIEW);
mPreviewRequestBuilder.addTarget(surface);
mBackCameraDevice.createCaptureSession(Arrays.asList(
surface,
mJpegImageReader.get().getSurface(),
mRAWImageReader.get().getSurface(),
persistentRecorderSurface
), new CameraCaptureSession.StateCallback() {
@Override
public void onConfigured(CameraCaptureSession session) {
synchronized (mCameraStateLock) {
if (mBackCameraDevice == null) {
return;
}
try {
setup3AControlsLocked(mPreviewRequestBuilder);
session.setRepeatingRequest(mPreviewRequestBuilder.build(),
mPreCaptureCallback, mBackgroundHandler);
mState = CameraStates.PREVIEW;
} catch (CameraAccessException | IllegalStateException e) {
e.printStackTrace();
return;
}
mSession = session;
}
}
@Override
public void onConfigureFailed(CameraCaptureSession session) {
showToast("Failed to configure camera.");
}
}, mBackgroundHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
或MediaRecorder,并在这些上调用prepare()。
否则,在持久性表面的另一端实际上没有任何东西,并且相机无法分辨出需要什么分辨率或其他设置。
另请注意,根据支持的硬件级别和功能,您可以从摄像机获得多少并发输出。不幸的是,目前没有要求设备必须支持您的输出组合(预览,记录,JPEG,RAW),因此很可能很多或所有设备仍然会给您一个错误。