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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.
*/
// https://github.com/w3c/webcodecs/issues/88
// https://issues.chromium.org/issues/40725065
// https://webcodecs-blogpost-demo.glitch.me/
export async function cloneFrame(frame: VideoFrame): Promise<VideoFrame> {
const {
codedHeight,
codedWidth,
colorSpace,
displayHeight,
displayWidth,
format,
timestamp,
} = frame;
const rect = {x: 0, y: 0, width: codedWidth, height: codedHeight};
const data = new ArrayBuffer(frame.allocationSize({rect}));
try {
await frame.copyTo(data, {rect});
} catch (error) {
// The VideoFrame#copyTo on x64 builds on macOS fails. The workaround here
// is to clone the frame.
// https://stackoverflow.com/questions/77898766/inconsistent-behavior-of-webcodecs-copyto-method-across-different-browsers-an
return frame.clone();
}
return new VideoFrame(data, {
codedHeight,
codedWidth,
colorSpace,
displayHeight,
displayWidth,
duration: frame.duration ?? undefined,
format: format!,
timestamp,
visibleRect: frame.visibleRect ?? undefined,
});
}
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