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Blacklist the whole device from HEVC decoding if Qualcomm's HEVC hybrid decoder is found

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This commit is contained in:
Cameron Gutman 2015-12-16 19:20:00 -08:00
parent 0e21d5e166
commit 3c2dd88fd3
1 changed files with 31 additions and 1 deletions
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32
app/src/main/java/com/limelight/binding/video/MediaCodecHelper.java
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@ -29,8 +29,9 @@ public class MediaCodecHelper {
private static final List<String> directSubmitPrefixes;
private static final List<String> constrainedHighProfilePrefixes;
private static final List<String> whitelistedHevcDecoders;
private static final List<String> hevcDeviceBlacklistingDecoderPrefixes;
static {
static {
directSubmitPrefixes = new LinkedList<String>();
// These decoders have low enough input buffer latency that they
@ -44,6 +45,18 @@ public class MediaCodecHelper {
directSubmitPrefixes.add("omx.arc");
}
static {
// If we find these decoders present at all, we don't enable HEVC
hevcDeviceBlacklistingDecoderPrefixes = new LinkedList<>();
// This decoder appears on some Qualcomm devices prior to Snapdragon 805. It appears
// to be so broken that it crashes some devices or at best shows no video. On these devices
// Qualcomm thought they'd be clever and also expose omx.qcom.video.decoder.hevc (same as
// real hw acceleration SoCs like 805). As a result, we need to blacklist HEVC for ALL codecs
// if we see this codec in the list.
hevcDeviceBlacklistingDecoderPrefixes.add("omx.qcom.video.decoder.hevchybrid");
}
static {
preferredDecoders = new LinkedList<String>();
}
@ -163,6 +176,11 @@ public class MediaCodecHelper {
return false;
}
// Check for indications that this device has a broken HEVC codec
if (deviceIsHevcBlacklisted()) {
return false;
}
return isDecoderInList(whitelistedHevcDecoders, decoderName);
}
@ -229,6 +247,18 @@ public class MediaCodecHelper {
return null;
}
public static boolean deviceIsHevcBlacklisted() {
for (MediaCodecInfo codecInfo : getMediaCodecList()) {
// Check for device-blacklisting codecs
if (isDecoderInList(hevcDeviceBlacklistingDecoderPrefixes, codecInfo.getName())) {
LimeLog.info("Decoder blacklists HEVC on entire device! "+codecInfo.getName());
return true;
}
}
return false;
}
public static MediaCodecInfo findFirstDecoder(String mimeType) {
for (MediaCodecInfo codecInfo : getMediaCodecList()) {
// Skip encoders