fix(player): render layered bilingual ASS subtitles

[ModerRAS]

Summary

• upgrade Media3 from 1.3.1 to 1.8.0 for ASS/SSA Layer and cue z-order support
• use Media3 1.8 native effects renderer and remove obsolete PreviewingVideoGraph wiring
• update the Media3 analytics callback signature

Verification

• ./gradlew test lint
• ./gradlew :app:assembleDebug
• HK1 real-device playback with a stream-copy clip from Lv999 no Murabito - 01 [ASSx2].mkv
• STANDARD_EXO selected 简日双语 and rendered simultaneous Chinese and Japanese dialogue cues

Version

Patch-level bug fix. Latest stable release is v2.4.623 and the local base is already 2.4.0, so baseAppVersionName is unchanged; CI will assign the next patch.

Summary by CodeRabbit

• New Features

  • Updated the media playback engine to a newer version.
  • Improved compatibility with updated video playback callbacks.
  • Continued support for experimental video effects across playback modes.

• Bug Fixes

  • Simplified video rendering behavior for more reliable playback.
  • Removed obsolete HDR/SDR preview processing that could affect video output.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 4cfd9fb3-eccb-4f2c-b75f-d6eed59c17ff

📥 Commits

Reviewing files that changed from the base of the PR and between 7e66bdd and 67daab3.

📒 Files selected for processing (6)

• gradle/libs.versions.toml
• player-core/src/main/kotlin/com/miruplay/tv/player/DiModule.kt
• player-core/src/main/kotlin/com/miruplay/tv/player/ExoPlaybackController.kt
• player-core/src/main/kotlin/com/miruplay/tv/player/ExperimentalHdrSdrVideoGraphFactory.kt
• player-core/src/main/kotlin/com/miruplay/tv/player/ExperimentalRenderersFactory.kt
• player-core/src/test/kotlin/com/miruplay/tv/player/ExperimentalHdrSdrVideoGraphFactoryTest.kt

💤 Files with no reviewable changes (2)

• player-core/src/main/kotlin/com/miruplay/tv/player/ExperimentalHdrSdrVideoGraphFactory.kt
• player-core/src/test/kotlin/com/miruplay/tv/player/ExperimentalHdrSdrVideoGraphFactoryTest.kt

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📝 Walkthrough

Walkthrough

The update raises Media3 from 1.3.1 to 1.8.0, updates a callback signature, and removes previewing video graph creation. MEDIA3_EFFECTS mode now uses the default Media3 renderer.

Changes

Media3 video pipeline update

Layer / File(s)	Summary
Media3 API compatibility gradle/libs.versions.toml, player-core/src/main/kotlin/com/miruplay/tv/player/ExoPlaybackController.kt	The Media3 version changes to 1.8.0. onVideoInputFormatChanged accepts the nullable decoder reuse evaluation parameter.
Renderer pipeline simplification player-core/src/main/kotlin/com/miruplay/tv/player/ExperimentalRenderersFactory.kt, player-core/src/main/kotlin/com/miruplay/tv/player/DiModule.kt, player-core/src/main/kotlin/com/miruplay/tv/player/ExperimentalHdrSdrVideoGraphFactory.kt, player-core/src/test/kotlin/com/miruplay/tv/player/ExperimentalHdrSdrVideoGraphFactoryTest.kt	PreviewingVideoGraph and compositing sink dependencies are removed. MEDIA3_EFFECTS mode retains the default renderer. Other modes use the experimental HDR surface renderer. Obsolete HDR/SDR graph resolution code and tests are removed.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Possibly related PRs

• ModerRAS/MiruPlay#28: Modifies the same player integration APIs that this update changes.
• ModerRAS/MiruPlay#41: Also modifies ExoPlaybackController.
• ModerRAS/MiruPlay#44: Also changes Media3 and ExoPlaybackController integration.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the main bug fix: rendering layered bilingual ASS subtitles.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/bilingual-subtitle-rendering

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