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Fix Amlogic HEVC black screen by disabling unsafe RFI #289

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Merged
qiin2333 merged 1 commit into from
Apr 26, 2026
Merged

Fix Amlogic HEVC black screen by disabling unsafe RFI #289

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19 changes: 16 additions & 3 deletions app/src/main/java/com/limelight/binding/video/MediaCodecHelper.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,7 @@ object MediaCodecHelper {
private var isLowEndSnapdragon = false
private var isAdreno620 = false
private var isSnapdragonGSeries = false
private var isAmlogicRfiSafe = false
private var initialized = false

init {
Expand Down Expand Up @@ -190,7 +191,11 @@ object MediaCodecHelper {
refFrameInvalidationHevcPrefixes.addAll(listOf("omx.mtk", "c2.mtk"))
whitelistedHevcDecoders.add("omx.amlogic")
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
refFrameInvalidationHevcPrefixes.addAll(listOf("omx.amlogic", "c2.amlogic"))
// Amlogic HEVC decoders are known to produce artifacts and decoder hangs
// when HEVC RFI is enabled after packet loss on many Android TV devices.
// Fire TV devices on Fire OS 7+ (Android 8+) are confirmed working.
isAmlogicRfiSafe = true
LimeLog.info("Enabling Amlogic HEVC RFI on Fire OS 7+ device")
}
}

Expand Down Expand Up @@ -606,8 +611,16 @@ object MediaCodecHelper {
if (decoderSupportsAndroidRLowLatency(decoderInfo, "video/hevc") ||
decoderSupportsKnownVendorLowLatencyOption(decoderInfo.name)
) {
LimeLog.info("Enabling HEVC RFI based on low latency option support")
return true
return if (!isDecoderInList(amlogicDecoderPrefixes, decoderInfo.name)) {
LimeLog.info("Enabling HEVC RFI based on low latency option support")
true
} else if (isAmlogicRfiSafe) {
LimeLog.info("Enabling HEVC RFI on confirmed-safe Amlogic device")
true
} else {
LimeLog.info("Not enabling HEVC RFI on unconfirmed Amlogic decoder: ${decoderInfo.name}")
false
}
}
return isDecoderInList(refFrameInvalidationHevcPrefixes, decoderInfo.name)
}
Expand Down
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