transcoding: add watchdog to prevent transcoder hang
Add a watchdog to monitor transcoder progress. Make transcoder
report heart beat regularly as long as there is new progress.
If heartbeat stops, watchdog will initiate a timeout to
1) Abandon old TranscoderWrapper. We try to shut it down nicely,
however, if it's really stuck, we'll have to leave it there.
2) Instantiate a new TranscoderWrapper with new looper.
3) Report Watchdog timeout to client.
Tests:
- New unit tests to MediaTranscoder, TranscodingSessionController
and MediaTranscodingService's simulated test (for error code reporting).
- Manually tested that long recording works properly without timeout.
bug: 169453212
Change-Id: Iae89e49e8e12d6078dc49eef2960efd03e91c431
diff --git a/media/libmediatranscoding/transcoder/benchmark/MediaTranscoderBenchmark.cpp b/media/libmediatranscoding/transcoder/benchmark/MediaTranscoderBenchmark.cpp
index 712f8fc..ac3b2c0 100644
--- a/media/libmediatranscoding/transcoder/benchmark/MediaTranscoderBenchmark.cpp
+++ b/media/libmediatranscoding/transcoder/benchmark/MediaTranscoderBenchmark.cpp
@@ -60,6 +60,8 @@
virtual void onProgressUpdate(const MediaTranscoder* transcoder __unused,
int32_t progress __unused) override {}
+ virtual void onHeartBeat(const MediaTranscoder* transcoder __unused) override {}
+
virtual void onCodecResourceLost(const MediaTranscoder* transcoder __unused,
const std::shared_ptr<ndk::ScopedAParcel>& pausedState
__unused) override {}