Exiting of the JPEGD Process Due to Timeout

Symptom

The user process exits.

In the app logs, error logs similar to "task timeout, userData=..., timeout=30, duration=..." and warning logs similar to "frames statistic: ACL receive(n), send(n-1)" are displayed. n indicates the number of processed tasks.

A log snippet is as follows:

[ERROR] AICPU(pid,pName):DateTimeMS [dvpp_timeout_manager.cc:33][OnPulse][tid:2581][DVPP_KERNELS] WaitId[10] task timeout, userData=0xe7ffe0001280, timeout=30, duration=30.930062.
[INFO] AICPU(pid,pName):DateTimeMS [dvpp_kernel_base.cc:222][SendTaskCompleteToTs][tid:2581][DVPP_KERNELS] Send task complete to ts success, taskId=2, streamId=44, errorCode=1.
[WARNING] DVPP(pid,pName):DateTimeMS [JpegdAsyncManager.cpp:405][API] [PrintFrameCount:405] [T208] DFX[JPEGD]: frames statistic: ACL receive(16), send(15)

Possible Cause

When multiple channels of large-resolution (for example, 3840 x 2160 or higher) JPEG images with rotation information are concurrently decoded, the image decoding may take a long time. As a result, the user process exits due to timeout.

Solution

1. Determine whether a large-size image contains rotation information.

   Use a JPEG stream analyzer (such as JPEGsnoop) to parse large-size images and check whether the images contain rotation information. If Orientation is 1, the image is not rotated. Otherwise, the rotation is performed by a certain angle. For example, the Orientation information parsed in the following figure is 8, indicating that the rotation is performed by 270° clockwise.

   

2. If the images are large-size ones with rotation, you are advised to call a third-party library (such as OpenCV) for decoding.