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Add magic performance boost for MediaTek devices

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This commit is contained in:
Cameron Gutman 2022-06-01 22:06:11 -05:00
parent 3bfeaefdbd
commit 6f9021a5e6
1 changed files with 16 additions and 0 deletions
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16
app/src/main/java/com/limelight/binding/video/MediaCodecHelper.java
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@ -41,6 +41,7 @@ public class MediaCodecHelper {
private static final List<String> qualcommDecoderPrefixes;
private static final List<String> kirinDecoderPrefixes;
private static final List<String> exynosDecoderPrefixes;
private static final List<String> mediatekDecoderPrefixes;
public static final boolean IS_EMULATOR = Build.HARDWARE.equals("ranchu") || Build.HARDWARE.equals("cheets");
@ -211,6 +212,12 @@ public class MediaCodecHelper {
exynosDecoderPrefixes.add("omx.exynos");
}
static {
mediatekDecoderPrefixes = new LinkedList<>();
mediatekDecoderPrefixes.add("omx.mtk");
}
private static boolean isPowerVR(String glRenderer) {
return glRenderer.toLowerCase().contains("powervr");
}
@ -392,6 +399,15 @@ public class MediaCodecHelper {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R && decoderSupportsAndroidRLowLatency(decoderInfo, mimeType)) {
videoFormat.setInteger(MediaFormat.KEY_LOW_LATENCY, 1);
}
else if (isDecoderInList(mediatekDecoderPrefixes, decoderInfo.getName())) {
// MediaTek decoders don't use vendor-defined keys for low latency mode. Instead, they have a modified
// version of AOSP's ACodec.cpp which supports the "vdec-lowlatency" option. This option is passed down
// to the decoder as OMX.MTK.index.param.video.LowLatencyDecode.
//
// https://github.com/yuan1617/Framwork/blob/master/frameworks/av/media/libstagefright/ACodec.cpp
// https://github.com/iykex/vendor_mediatek_proprietary_hardware/blob/master/libomx/video/MtkOmxVdecEx/MtkOmxVdecEx.h
videoFormat.setInteger("vdec-lowlatency", 1);
}
else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
// MediaCodec supports vendor-defined format keys using the "vendor.<extension name>.<parameter name>" syntax.
// These allow access to functionality that is not exposed through documented MediaFormat.KEY_* values.