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/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import PrimaryCTAButton from '@/common/components/button/PrimaryCTAButton';
import useMessagesSnackbar from '@/common/components/snackbar/useDemoMessagesSnackbar';
import useFunctionThrottle from '@/common/components/useFunctionThrottle';
import useVideo from '@/common/components/video/editor/useVideo';
import {
areTrackletObjectsInitializedAtom,
isStreamingAtom,
sessionAtom,
streamingStateAtom,
} from '@/demo/atoms';
import {ChevronRight} from '@carbon/icons-react';
import {useAtom, useAtomValue, useSetAtom} from 'jotai';
import {useCallback, useEffect} from 'react';
export default function TrackAndPlayButton() {
const video = useVideo();
const [isStreaming, setIsStreaming] = useAtom(isStreamingAtom);
const streamingState = useAtomValue(streamingStateAtom);
const areObjectsInitialized = useAtomValue(areTrackletObjectsInitializedAtom);
const setSession = useSetAtom(sessionAtom);
const {enqueueMessage} = useMessagesSnackbar();
const {isThrottled, maxThrottles, throttle} = useFunctionThrottle(250, 4);
const isTrackAndPlayDisabled =
streamingState === 'aborting' || streamingState === 'requesting';
useEffect(() => {
function onStreamingStarted() {
setIsStreaming(true);
}
video?.addEventListener('streamingStarted', onStreamingStarted);
function onStreamingCompleted() {
enqueueMessage('trackAndPlayComplete');
setIsStreaming(false);
}
video?.addEventListener('streamingCompleted', onStreamingCompleted);
return () => {
video?.removeEventListener('streamingStarted', onStreamingStarted);
video?.removeEventListener('streamingCompleted', onStreamingCompleted);
};
}, [video, setIsStreaming, enqueueMessage]);
const handleTrackAndPlay = useCallback(() => {
if (isTrackAndPlayDisabled) {
return;
}
if (maxThrottles && isThrottled) {
enqueueMessage('trackAndPlayThrottlingWarning');
}
// Throttling is only applied while streaming because we should
// only throttle after a user has aborted inference. This way,
// a user can still quickly abort a stream if they notice the
// inferred mask is misaligned.
throttle(
() => {
if (!isStreaming) {
enqueueMessage('trackAndPlayClick');
video?.streamMasks();
setSession(previousSession =>
previousSession == null
? previousSession
: {...previousSession, ranPropagation: true},
);
} else {
video?.abortStreamMasks();
}
},
{enableThrottling: isStreaming},
);
}, [
isTrackAndPlayDisabled,
isThrottled,
isStreaming,
maxThrottles,
video,
setSession,
enqueueMessage,
throttle,
]);
useEffect(() => {
const handleKey = (event: KeyboardEvent) => {
const callback = {
KeyK: handleTrackAndPlay,
}[event.code];
if (callback != null) {
event.preventDefault();
callback();
}
};
document.addEventListener('keydown', handleKey);
return () => {
document.removeEventListener('keydown', handleKey);
};
}, [handleTrackAndPlay]);
return (
<PrimaryCTAButton
disabled={isThrottled || !areObjectsInitialized}
onClick={handleTrackAndPlay}
endIcon={isStreaming ? undefined : <ChevronRight size={20} />}>
{isStreaming ? 'Cancel Tracking' : 'Track objects'}
</PrimaryCTAButton>
);
}
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