@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();
}
}
