[meta-freescale] [meta-fsl-arm][PATCH] gstreamer1.0-plugins-imx: add i.MX7 support

[Gary Bisson]

Otavio, All,

On Mon, Apr 4, 2016 at 1:04 PM, Otavio Salvador
<otavio.salvador at ossystems.com.br> wrote:
> On Sat, Apr 2, 2016 at 12:58 PM, Gary Bisson
> <gary.bisson at boundarydevices.com> wrote:
>> Modify the dependencies to match the platform features. By default
>> the build will generate the following plugins for all the mx6/mx7
>> platforms:
>> - imxpxpvideosink
>> - imxpxpvideotransform
>> - imxipuvideotransform
>> - imxipuvideosink
>> - imxipucompositor
>> - imxv4l2videosrc
>> - imxuniaudiodec
>> - imxmp3audioenc
>>
>> Then all the platforms with GPU support (6QDL, 6SL, 6SX) will also have:
>> - imxeglvivsink
>> - imxg2dvideosink
>> - imxg2dvideotransform
>> - imxg2dcompositor
>> Note that only the G2D plugins can work on 6SL.
>>
>> Finally, platforms with VPU support (6QDL) will also have:
>> - imxvpudec
>> - imxvpuenc_h263
>> - imxvpuenc_h264
>> - imxvpuenc_mpeg4
>> - imxvpuenc_mjpeg
>>
>> The pxp and v4l2 plugins have been tested on an i.MX7 Nitrogen7
>> platform from Boundary Devices.
>>
>> Signed-off-by: Gary Bisson <gary.bisson at boundarydevices.com>
>
> I do support this change, however it needs to use PACKAGECONFIG flags
> and also include 'configure' options which enable/disable the
> features. The features cannot be enabled depending on library
> detection as it can result in non-deterministic builds.

I agree this would be the best solution. I think gstreamer-imx doesn't
offer this kind of configuration options. Not sure how complicated it
is to implement, I'll let Carlos give his feedback as I'm not familiar
with waf.

However, if it takes time to implement, I think this patch could still
be useful as-is for now. Especially since the current recipe already
relies on on library detection to enable features. Also, this patch
fixes the dependencies of platforms without VPU such as the i.MX6SX
and i.MX6SL. How does the build behaves right now if
gstreamer1.0-plugins-imx is selected for an i.MX6SX platform? I'm not
sure why it would result in non-deterministic builds, would it be any
different than the current recipe to that regard?

Regards,
Gary