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feat: Cache mediaCapabilities.decodingInfo results #4789

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merged 1 commit into from
Dec 6, 2022

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theodab
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@theodab theodab commented Dec 5, 2022

Issue #4775

@theodab theodab added the type: enhancement New feature or request label Dec 5, 2022
@avelad avelad added this to the v4.4 milestone Dec 5, 2022
@avelad avelad added the priority: P2 Smaller impact or easy workaround label Dec 5, 2022
@avelad avelad requested review from joeyparrish and avelad December 5, 2022 17:49
avelad
avelad previously approved these changes Dec 5, 2022
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github-actions bot commented Dec 5, 2022

Incremental code coverage: 100.00%

@theodab theodab merged commit b7781f0 into shaka-project:main Dec 6, 2022
@theodab theodab deleted the mcapCache branch December 6, 2022 02:12
*/
static async getDecodingInfosForVariant_(variant, decodingConfig) {
try {
const cacheKey = JSON.stringify(decodingConfig);
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This is a problematic key. If the fields are serialized in a different order, this will fail to match.

It's better than no caching, but this needs work. Please file an issue to follow-up on this.

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(There's an entire ToTT episode on this subject, BTW, in context of comparing objects in tests using JSON.stringify. But it still applies here.)

* (stringified) decodingConfig.
*
* @type {Object.<(!string), (!MediaCapabilitiesDecodingInfo)>}
* @export
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Why is this exported? I don't think we want this exposed to the application and subject to backward compatibility guarantees.

If you just need it for unit testing, use @suppress in a test helper instead.

@github-actions github-actions bot added the status: archived Archived and locked; will not be updated label Jul 25, 2023
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3 participants