@Override
public void onSurfaceCreated(GL10 unused, EGLConfig config) {
Log.d(TAG, "onSurfaceCreated");
// We're starting up or coming back. Either way we've got a new EGLContext that will
// need to be shared with the video encoder, so figure out if a recording is already
// in progress.
mRecordingEnabled = mVideoEncoder.isRecording();
if (mRecordingEnabled) {
mRecordingStatus = RECORDING_RESUMED;
} else {
mRecordingStatus = RECORDING_OFF;
}
// Set up the texture blitter that will be used for on-screen display. This
// is *not* applied to the recording, because that uses a separate shader.
mFullScreen = new FullFrameRect(new Texture2dProgram(Texture2dProgram.ProgramType.TEXTURE_EXT));
mTextureId = mFullScreen.createTextureObject();
// Create a SurfaceTexture, with an external texture, in this EGL context. We don't
// have a Looper in this thread -- GLSurfaceView doesn't create one -- so the frame
// available messages will arrive on the main thread.
mSurfaceTexture = new SurfaceTexture(mTextureId);
// Tell the UI thread to enable the camera preview.
mCameraHandler.sendMessage(
mCameraHandler.obtainMessage(
CameraCaptureActivity.CameraHandler.MSG_SET_SURFACE_TEXTURE, mSurfaceTexture));
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera_capture);
File outputFile = new File(Environment.getExternalStorageDirectory(), "camera-test.mp4");
TextView fileText = (TextView) findViewById(R.id.cameraOutputFile_text);
fileText.setText(outputFile.toString());
Spinner spinner = (Spinner) findViewById(R.id.cameraFilter_spinner);
ArrayAdapter<CharSequence> adapter =
ArrayAdapter.createFromResource(
this, R.array.cameraFilterNames, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// Apply the adapter to the spinner.
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(this);
// Define a handler that receives camera-control messages from other threads. All calls
// to Camera must be made on the same thread. Note we create this before the renderer
// thread, so we know the fully-constructed object will be visible.
mCameraHandler = new CameraHandler(this);
mRecordingEnabled = sVideoEncoder.isRecording();
// Configure the GLSurfaceView. This will start the Renderer thread, with an
// appropriate EGL context.
mGLView = (GLSurfaceView) findViewById(R.id.cameraPreview_surfaceView);
mGLView.setEGLContextClientVersion(2); // select GLES 2.0
mRenderer = new CameraSurfaceRenderer(mCameraHandler, sVideoEncoder, outputFile);
mGLView.setRenderer(mRenderer);
mGLView.setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
Log.d(TAG, "onCreate complete: " + this);
}
@Override
public void onDrawFrame(GL10 unused) {
if (VERBOSE) Log.d(TAG, "onDrawFrame tex=" + mTextureId);
boolean showBox = false;
// Latch the latest frame. If there isn't anything new, we'll just re-use whatever
// was there before.
mSurfaceTexture.updateTexImage();
// If the recording state is changing, take care of it here. Ideally we wouldn't
// be doing all this in onDrawFrame(), but the EGLContext sharing with GLSurfaceView
// makes it hard to do elsewhere.
if (mRecordingEnabled) {
switch (mRecordingStatus) {
case RECORDING_OFF:
Log.d(TAG, "START recording");
// start recording
mVideoEncoder.startRecording(
new TextureMovieEncoder.EncoderConfig(
mOutputFile, 480, 480, 1000000, EGL14.eglGetCurrentContext()));
// TODO: get optimal width and height according to specified devices
mRecordingStatus = RECORDING_ON;
break;
case RECORDING_RESUMED:
Log.d(TAG, "RESUME recording");
mVideoEncoder.updateSharedContext(EGL14.eglGetCurrentContext());
mRecordingStatus = RECORDING_ON;
break;
case RECORDING_ON:
// yay
break;
default:
throw new RuntimeException("unknown status " + mRecordingStatus);
}
} else {
switch (mRecordingStatus) {
case RECORDING_ON:
case RECORDING_RESUMED:
// stop recording
Log.d(TAG, "STOP recording");
mVideoEncoder.stopRecording();
mRecordingStatus = RECORDING_OFF;
break;
case RECORDING_OFF:
// yay
break;
default:
throw new RuntimeException("unknown status " + mRecordingStatus);
}
}
// Set the video encoder's texture name. We only need to do this once, but in the
// current implementation it has to happen after the video encoder is started, so
// we just do it here.
//
// TODO: be less lame.
mVideoEncoder.setTextureId(mTextureId);
// Tell the video encoder thread that a new frame is available.
// This will be ignored if we're not actually recording.
mVideoEncoder.frameAvailable(mSurfaceTexture);
if (mIncomingWidth <= 0 || mIncomingHeight <= 0) {
// Texture size isn't set yet. This is only used for the filters, but to be
// safe we can just skip drawing while we wait for the various races to resolve.
// (This seems to happen if you toggle the screen off/on with power button.)
Log.i(TAG, "Drawing before incoming texture size set; skipping");
return;
}
// Update the filter, if necessary.
if (mCurrentFilter != mNewFilter) {
updateFilter();
}
if (mIncomingSizeUpdated) {
mFullScreen.getProgram().setTexSize(mIncomingWidth, mIncomingHeight);
mIncomingSizeUpdated = false;
}
// Draw the video frame.
mSurfaceTexture.getTransformMatrix(mSTMatrix);
mFullScreen.drawFrame(mTextureId, mSTMatrix);
// Draw a flashing box if we're recording. This only appears on screen.
showBox = (mRecordingStatus == RECORDING_ON);
if (showBox && (++mFrameCount & 0x04) == 0) {
drawBox();
}
}
