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Restore the legacy path and only use direct submit for certain whitelisted decoders

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Cameron Gutman
2015-03-23 15:51:11 -04:00
parent 7ab0be3b62
commit a676b8d8e6
2 changed files with 188 additions and 31 deletions
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app/src/main/java/com/limelight/binding/video/MediaCodecHelper.java
+11 -18
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@@ -26,14 +26,17 @@ public class MediaCodecHelper {
private static final List<String> spsFixupBitstreamFixupDecoderPrefixes;
private static final List<String> whitelistedAdaptiveResolutionPrefixes;
private static final List<String> baselineProfileHackPrefixes;
private static final List<String> fastOutputPollPrefixes;
private static final int FAST_OUTPUT_POLL_US = 3; // 3 us
private static final int NORMAL_OUTPUT_POLL_US = 50000; // 50 ms
private static final List<String> directSubmitPrefixes;
static {
fastOutputPollPrefixes = new LinkedList<String>();
fastOutputPollPrefixes.add("omx.nvidia");
directSubmitPrefixes = new LinkedList<String>();
// These decoders have low enough input buffer latency that they
// can be directly invoked from the receive thread
directSubmitPrefixes.add("omx.qcom");
directSubmitPrefixes.add("omx.sec");
directSubmitPrefixes.add("omx.intel");
directSubmitPrefixes.add("omx.brcm");
}
static {
@@ -107,18 +110,8 @@ public class MediaCodecHelper {
return false;
}
public static int getOptimalOutputBufferDequeueTimeout(String decoderName, MediaCodecInfo decoderInfo) {
// This concept of "fast output polling" is a workaround for certain devices that are powerful enough
// that the governor overzealously reduces the clockspeed of the CPU enough that it causes frames to be
// lost. This (at least) affects the Denver Tegra K1 running Android 5.0. To simplify things, I've simply
// set all Tegra devices to use fast polling.
if (isDecoderInList(fastOutputPollPrefixes, decoderName)) {
LimeLog.info("Decoder "+decoderName+" requires fast output polling");
return FAST_OUTPUT_POLL_US;
}
else {
return NORMAL_OUTPUT_POLL_US;
}
public static boolean decoderCanDirectSubmit(String decoderName, MediaCodecInfo decoderInfo) {
return isDecoderInList(directSubmitPrefixes, decoderName) && !isExynos4Device();
}
public static boolean decoderNeedsSpsBitstreamRestrictions(String decoderName, MediaCodecInfo decoderInfo) {