Vaapi API based decoder on NUC -Intel(R) Pentium(R) CPU N3700

sumit_j_1 · ‎11-04-2015

HI All,

I am posting this query here as I didn't find any separate forum for Vaapi based decode/encoders.

Actually, i got a reply form this forum that Intel Media SDK is not supported for NUC -Intel(R) Pentium(R) CPU N3700.

So, I have taken libva 1.6, Kernel 4.2, vaaps-driver from

https://01.org/linuxgraphics/downloads/2015q2-intel-graphics-stack-release

MY vainfo-

libva info: VA-API version 0.38.0
libva info: va_getDriverName() returns 0
libva info: User requested driver 'i965'
libva info: Trying to open /usr/local/lib/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_38
libva info: va_openDriver() returns 0
vainfo: VA-API version: 0.38 (libva 1.6.1)
vainfo: Driver version: Intel i965 driver for Intel(R) CherryView - 1.6.1
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Simple            : VAEntrypointEncSlice
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointEncSlice
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointEncSlice
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointEncSlice
      VAProfileH264MultiviewHigh      : VAEntrypointVLD
      VAProfileH264MultiviewHigh      : VAEntrypointEncSlice
      VAProfileH264StereoHigh         : VAEntrypointVLD
      VAProfileH264StereoHigh         : VAEntrypointEncSlice
      VAProfileVC1Simple              : VAEntrypointVLD
      VAProfileVC1Main                : VAEntrypointVLD
      VAProfileVC1Advanced            : VAEntrypointVLD
      VAProfileNone                   : VAEntrypointVideoProc
      VAProfileJPEGBaseline           : VAEntrypointVLD
      VAProfileJPEGBaseline           : VAEntrypointEncPicture
      VAProfileVP8Version0_3          : VAEntrypointVLD
      VAProfileVP8Version0_3          : VAEntrypointEncSlice
      VAProfileH264MultiviewHigh      : VAEntrypointVLD
      VAProfileH264MultiviewHigh      : VAEntrypointEncSlice
      VAProfileH264StereoHigh         : VAEntrypointVLD
      VAProfileH264StereoHigh         : VAEntrypointEncSlice
      VAProfileHEVCMain               : VAEntrypointVLD

I tried to developed a decoder for only one I-frame using vaapi API based on this link.

http://cgit.freedesktop.org/libva/tree/test/decode/mpeg2vldemo.cpp

But my output is not coming proper. I am seeing blocky patches in output yuv...

Regards,

Sumit Jha

Surbhi_M_Intel · ‎11-04-2015

Hi Sumit,

There is a forum for the linux releases from where you have downloaded the libva, driver and kernel at https://01.org/linuxgraphics/forum, you can post in the graphics installer discussion page, where open source projects and Intel graphics for Linux is discussed.

Thanks,
Surbhi