21 lines
1.3 KiB
Prolog
21 lines
1.3 KiB
Prolog
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# Flutter turns minification on for every release build (FlutterPlugin sets
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# releaseBuildType.isMinifyEnabled), and appends this file when it exists. Anything the
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# app reaches only by name — reflection or JNI — therefore needs an explicit keep here.
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# The bundled Media3 FFmpeg audio decoder (ALAC, DTS, DTS-HD, TrueHD, ...).
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#
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# DefaultRenderersFactory instantiates FfmpegAudioRenderer through Class.forName and no
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# app code references it, so R8 shrinks the class away; media3's own consumer rules only
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# -keepclassmembers its constructor, which neither keeps the class nor pins its name.
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# ffmpeg_jni.cc separately resolves FfmpegAudioDecoder and its growOutputBuffer callback
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# by name in JNI_OnLoad, and returns JNI_ERR when either is missing, which fails the whole
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# System.loadLibrary("ffmpegJNI") call.
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#
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# Without these keeps a release build silently loses every codec this decoder adds:
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# TrueHD/DTS-HD land on MediaCodecAudioRenderer, which has no decoder for them, and
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# playback bails to the mpv fallback and loses ExoPlayer's Dolby Vision handling (#1703).
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-keep class androidx.media3.decoder.ffmpeg.** { *; }
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# growOutputBuffer's JNI descriptor names this type, so it may not be renamed either.
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-keep class androidx.media3.decoder.SimpleDecoderOutputBuffer { *; }
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