[meta-freescale] IMX6 imx6dlsabresd, Qt5Multimedia problem, mxc_vpu:vpu_alloc_dma_buffer fails?

[Mauro Ziliani]

Solved.

There was not enough DMA reserved memory for videos.


Il 22/09/18 18:28, Mauro Ziliani ha scritto:
> Hi all
>
> I'm working with imx6dlsabresd, fsl-image-qt5 derived image and Qt
> Multimedia Widgets.
>
> The bsp i derived from a mix of jethro and krogoth and Qt is 5.6.1
> version, kernel is linux-imx 4.1.15.
>
>
> I need to play video on the screen
>
> Tje video file has the following format.
>
> Topology:
>   container: Quicktime
>     video: H.264 (Baseline Profile)
>
> Properties:
>   Duration: 0:01:12.500000000
>   Seekable: yes
>   Tags:
>       codec video: H.264 / AVC
>       codice lingua: en
>       bitrate: 1137481
>       data/ora: 2018-05-29T13:57:59Z
>       QT atom: buffer of 25 bytes
>       formato contenitore: ISO MP4/M4A
>
>
> Sometime happens that the video can not be played anymore.
>
> Kernel tells "Physical memory allocation error!" in mxc_vpu.
>
> I think the message is printed after vpu_alloc_dma_buffer fails.
>
>
> Have you some experience?
>
>
> There are some patch?
>