EncoderDecoderTestForMJPEG

Purpose

This is a test application for JPEG/M-JPEG throug MediaCodec. This could also be a good tutorial of how to using MediaCodec API on Android.

Before testing, you should put input frames in the external storage of your target.

For Encoder Test, put 10 YUV frames at /storage/sdcard0/video.YUY2_<frame_index>.
For Decoder Test, put 10 JPEG pictures at /storage/sdcard0/video.jpeg_<jpeg_index>.

This was written as if it were a CTS test, but is not part of CTS.It should be straightforward to adapt the code to other environments.

1 . Place the code

You can put the src under cts directory of the whole android project. It looks Like:

<your-android-proj-root>/cts/tests/tests/media/src/android/media/cts/EncoderDecoderTestForMJPEG.java

2 . Build the code

Just build the whole cts test target, EncoderDecoderTestForMJPEG.java will be included in the cts target automatically.

make cts -j4

3 . How to run the test

Just like any other cts test cases, follow command:

run cts -c android.media.cts.EncoderDecoderTestForMJPEG -m <your-testing-method>

You will see a PASS if the test complete successfully. And 10 output frames in the same directory where you keep testing input.

For Encoder Test, since your input is like video.YUY2_<frame_index> so you will get video.jpeg_<jpeg_index>.
For Decoder Test, since your input is like video.jpeg_<jpeg_index> so you will get video.YUY2_<frame_index>.

The JPEG encoder can encoder one frame successfully.
Add test plans for different resolutions. @20150804
Change to feed 10 input buffers continuously, in this way, we can get multiple output buffers. @20150804

~~1 . Fix infinite looping issue of JPEG encoder.~~

~~2 . Add decoder test.~~

3 . Fix the info.flags that can't got EOS flags from output BufferInfo.

~~4 . Fix run-time warnings.~~

~~5 . Code revise needed.~~

6 . Should handle Java FileOutputStream/FileInputStream nicely.