[Android] [RFC PATCH 0/3] OMX: android hardware buffers

[Thomas Guillem]

I pushed my patches in my github here:
https://github.com/tguillem/vlc-android .

I think it's always better to use MediaCodec than IOMX when it's available.

I don't think we should pull my last patch that enable iomx for jb, jbmr2,
and kitkat (or maybe put a debug/config to enable it) since it may cause
some instability.

Indeed, with a Nexus 7v2 (QCOM) on android 4.4, IOMX (with or without
hwbuf) make mediaserver crash. No problem for vlc because it fallback to
libav.
It need to check that crash later, I tested on Archos Video Player and I
can't reproduce it using the same conditions.


2014-06-29 22:08 GMT+02:00 Martin Storsjö <martin at martin.st>:

> On Thu, 26 Jun 2014, Thomas Guillem wrote:
>
>  Hi,
>>
>> Here is my set of patches that goes with my other set of patches I
>> proposed on
>> vlc-devel mailing list that enable android hardware buffers on OMX.
>>
>> - I added some symbols on android-libs that are needed by GraphicBuffer on
>>   iomx.cpp.
>>
>> - I also added some gingerbread headers to enable iomx_hwbuffer.c build,
>> but
>>   I'm not sure that we can use HW buffer on gingerbread, I need to check
>> that
>>   later.
>>
>> I also have local big patches that add headers for jb, jbmr2 and kitkat,
>> but I
>> don't know if submitting a 6MB patch is well appreciated on a mailing
>> list.
>>
>
> It's probably better to push those to a git clone somewhere (e.g. github)
> and we can fetch them from there, instead of mailing them.
>
> I'm pretty sure plain jb used to work with the ics headers at least for
> the normal indirect rendering, but the ABI for direct rendering might
> require separate headers.
>
> I also thought that the normal iomx decoding on jbmr2 worked fine with ics
> headers, but when I tested this now I do indeed need new headers for this
> as well. So either we should add those and build a separate
> libiomx-jbmr2.so, or change the limits in vlc-android/src/org/videolan/libvlc/LibVLC.java
> to make sure we don't try to load libiomx-ics.so on JB MR 2. (Is there any
> modern device where MediaCodec is available, where it works worse than
> IOMX?)
>
> // Martin
> _______________________________________________
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> Android at videolan.org
> https://mailman.videolan.org/listinfo/android
>

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