camera: Allow to use boottime as timestamp reference #1
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* Some /mad/ HALs use boottime clock without reporting timestamp source as realtime -> Add a flag to force boottime offset calculation [SebaUbuntu] Edit for Soong conditional Change-Id: I56b623a1c2b58ca8a6287783d938fb665de201df
SahilSonar
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Apr 15, 2023
Do not hold lock when IPC call is expected from HAL. C2SurfaceSyncObj is shared lock between framework and HAL. HAL process can have only one thread to handle IPC from HAL to framework. Therefore Holding C2SurfaceSyncObj from HAL during IPC call could trigger deadlock. The exact scenario is as follows. Thread #1:(HAL -> framework IPC) HIDL call onInputBuffersReleased() calls to feedInputBufferIfAvailable(). Since this is using HAL IPC thread, this will block Thread #3. This is waiting for mOuput mutex which is held by Thread #2. Thread #2:(framework) discardBuffer() holds mOutput mutex which blocks Thread #1. But this is waiting for C2SurfaceSyncObj which is held by Thread #3. Thread #3:(HAL) Dtor of C2BufferQueueBlockPoolData is holding C2SurfaceSyncObj, therefore this will block #2. This thread is waiting for HIDL IPC thread to be free in order for 'igbp->cancel()', but HIDL IPC thread is already occupied by Thread #1. Bug: 246707566 Test: atest android.media.decoder.cts.AdaptivePlaybackTest Test: atest android.media.decoder.cts.DecoderTest Change-Id: I6a9540d3b4d03806cd40bb4f89a234a6b77758a9 Merged-In: I6a9540d3b4d03806cd40bb4f89a234a6b77758a9
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timestamp source as realtime
-> Add a flag to force boottime offset calculation
[SebaUbuntu] Edit for Soong conditional
Change-Id: I56b623a1c2b58ca8a6287783d938fb665de201df