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feat: add modern EME support for FairPlay (#3776)

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Add support for HLS com.apple.streamingkeydelivery through MSE/EME implementation.

Close #3346

## Tests
Tested on:
- Mac 11.6 Safari 15.2
- iOS 15.2 Safari 15.2
- Mac 11.6 Chrome 96 (for potential regressions on Widevine keySystem)

| Mode | DRM API | TS | CMAF (mono-key and multi-keys)
|---|---|---|---|
| file | EME | ✅  | ✅  |
| file | Legacy-prefixed | ✅   | ✅   |
| media-source | EME | **mux-js**: `encrypted` never fired<br />**real MSE**: `encrypted` event received, but with incorrect `sinf` initData (*1)  | ✅  |
| media-source | Legacy-prefixed | **mux-js**: `webkitneedkey` never fired<br/>**real MSE**: TBD  | 🔴 fails to append media segment to SourceBuffer (init segment ok) `(video:4) – "failed fetch and append: code=3015"` |

## Support table 
| Mode | DRM API | TS | CMAF (mono-key and multi-keys)
|---|---|---|---|
| file | EME | ✅  | ✅  |
| file | Legacy-prefixed | ✅   | ✅   |
| media-source | EME | 🚫 `4040: HLS_MSE_ENCRYPTED_MP2T_NOT_SUPPORTED`  | ✅  |
| media-source | Legacy-prefixed | 🚫 `4041: HLS_MSE_ENCRYPTED_LEGACY_APPLE_MEDIA_KEYS_NOT_SUPPORTED`  |🚫 `4041: HLS_MSE_ENCRYPTED_LEGACY_APPLE_MEDIA_KEYS_NOT_SUPPORTED` |

⚠️ Use EME APIs with multi-keys CMAF makes the video stalling with the audio continuing alone after a short time (~3 minutes in the stream, could be shorter, could be longer). Didn't find an explanation to that yet. I've observed the same behaviour with hls.js code so I don't think this is a player issue.
This commit is contained in:
Vincent Valot
2022-02-07 20:17:22 +01:00
committed by GitHub
parent 7155ec73bc
commit 6d76a135e5
16 changed files with 396 additions and 186 deletions
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lib/util/error.js
+11
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@@ -686,6 +686,17 @@ shaka.util.Error.Code = {
*/
'HLS_VARIABLE_NOT_FOUND': 4039,
/**
* We do not support playing encrypted mp2t with MSE
*/
'HLS_MSE_ENCRYPTED_MP2T_NOT_SUPPORTED': 4040,
/**
* We do not support playing encrypted content (different than mp2t) with MSE
* and legacy Apple MediaKeys API.
*/
'HLS_MSE_ENCRYPTED_LEGACY_APPLE_MEDIA_KEYS_NOT_SUPPORTED': 4041,
// RETIRED: 'INCONSISTENT_BUFFER_STATE': 5000,
// RETIRED: 'INVALID_SEGMENT_INDEX': 5001,