Here is the original very general plan from Hans:
What happened eventually:
Out of the first 4 tasks, I actually didn't do tasks 2,3 only 1,4.
Tasks 1 seemed to me very simple, I was sure it would take me just a few days.
Eventually it took much longer, first version was sent 16 days after the internship started.
Making the alignment correctly took time and also understanding the selection API was not obvious.
Task 4 - This one was as well not that easy and took me a while. It needed quite a lot of new code in both kernel and user space.
Task 5 is the main task of the internship, I started to work on it at Jan 21 and I'm still working on it at the time of writing this post. I already sent one version of patch sets for the kernel and the userspace.
Hans did not assign specific deadlines to the tasks as it was hard to predict how long the tasks would take me. I was mostly too optimistic regarding task 1. I thought that all is needed is to round the dimensions and pad the edge of the image with zeros, but it turned out to be more complicated.
I have 20 days until the end of the internship and I hope to finish this task by then or before:)
1) Add support to vicodec to compress formats whose resolution does not
align with the macroblock size (8x8). An example of that is 1440x900.
This will require some work in the fwht codec and support for
selection rectangles needs to be added to the v4l2 API.
2) v4l2-compliance: add code to detect codecs based on the M2M(_MPLANE)
capability and which side (CAPTURE or OUTPUT) has only compressed
formats. This is needed so test code can be added specifically
for codecs.
3) Add missing features of the stateful codec specification, specifically
stopping and enumerating formats (dependency of the raw formats of the
chosen compressed format).
v4l2-compliance has to be extended with the corresponding tests.
4) Add support for mid-stream resolution changes to vicodec, again including
v4l2-compliance tests.
Depending on how long 1-3 take, this can be postponed to the end of the
internship.
5) Add stateless codec support to vicodec + v4l2-compliance tests. This will
probably be subdivided into smaller pieces as we get to it.
6) Create libva layer for this stateless codec so it can be used by ffmpeg etc.
So items 1-3 should be done first, item 4 can be rescheduled depending on where
we are timewise.
Items 5 and 6 are very high-level at the moment, and I hope I can give a more
detailed schedule by the time you are ready to work on that.
Note that it would not surprise me if the work on v4l2-compliance will takelonger than making the vicodec changes. Testing is hard work.
What happened eventually:
Out of the first 4 tasks, I actually didn't do tasks 2,3 only 1,4.
Tasks 1 seemed to me very simple, I was sure it would take me just a few days.
Eventually it took much longer, first version was sent 16 days after the internship started.
Making the alignment correctly took time and also understanding the selection API was not obvious.
Task 4 - This one was as well not that easy and took me a while. It needed quite a lot of new code in both kernel and user space.
Task 5 is the main task of the internship, I started to work on it at Jan 21 and I'm still working on it at the time of writing this post. I already sent one version of patch sets for the kernel and the userspace.
Hans did not assign specific deadlines to the tasks as it was hard to predict how long the tasks would take me. I was mostly too optimistic regarding task 1. I thought that all is needed is to round the dimensions and pad the edge of the image with zeros, but it turned out to be more complicated.
I have 20 days until the end of the internship and I hope to finish this task by then or before:)
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