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fix(decoder): don't modify packet pts

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Simon Chan 2025-08-28 15:00:56 +08:00
parent 72bf025804
commit 3b71612b31
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1 changed files with 11 additions and 3 deletions
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14
libraries/scrcpy-decoder-webcodecs/src/video/decoder.ts
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@ -160,9 +160,11 @@ export class WebCodecsVideoDecoder implements ScrcpyVideoDecoder {
this.#pause = new PauseControllerImpl( this.#pause = new PauseControllerImpl(
(packet) => this.#decoder.decode(packet), (packet) => this.#decoder.decode(packet),
(packet, skipRendering) => { (packet, skipRendering) => {
let pts: bigint;
if (skipRendering) { if (skipRendering) {
// Set `pts` to 0 as a marker for skipping rendering this frame // Set `pts` to 0 as a marker for skipping rendering this frame
packet.pts = 0n; pts = 0n;
} else { } else {
// Set `pts` to current time to track decoding time // Set `pts` to current time to track decoding time
@ -175,9 +177,15 @@ export class WebCodecsVideoDecoder implements ScrcpyVideoDecoder {
// Multiply `performance.now()` by 1000 to get microseconds. // Multiply `performance.now()` by 1000 to get microseconds.
// Use string concatenation to prevent precision loss. // Use string concatenation to prevent precision loss.
packet.pts = BigInt(ms + (us + "000").slice(0, 3)); pts = BigInt(ms + (us + "000").slice(0, 3));
} }
return this.#decoder.decode(packet);
// Create a copy of `packet` because other code (like recording)
// needs the original `pts`
return this.#decoder.decode({
...packet,
pts,
});
}, },
); );