[Bug 110850] Vlc fails to decode video using vaapi

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110850

            Bug ID: 110850
           Summary: Vlc fails to decode video using vaapi
           Product: Mesa
           Version: 19.1
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: akarshanbiswas at fedoraproject.org
        QA Contact: dri-devel at lists.freedesktop.org

Tested Mesa version: 19.1.0 rc4, 19.0.5

Operating System: Fedora 30 with kernel 5.1.6

VLC version: 3.0.7 Vetinari (revision 3.0.6-223-g5fc4822ace)

GPU's tested: Both on Radeon RX550 and AMD APU a9-9410(stoney series)

Testing on both Xorg and Wayland


This bug is present since long time, selecting either vaapi video decoder or
vaapi video decoder via drm in vlc--> toos --> preferences--> Input/Codecs -->
hardware accelerated decoding fails and vlc switches to either vdpau or
software decoding.
(vdpau driver can't decode some hevc videos, vdpau is not supported on wayland)

Steps to reproduce:

1) After selecting vaapi video decoder in vlc, run vlc on a terminal with the
-v flag (for verbose)
2) play any media
3) Check the terminal ( Meanwhile vlc will try to switch to vdpau)



Actual results:
vlc's vaapi decoder fails with:
```
libva info: VA-API version 1.4.1
libva info: va_getDriverName() returns 0
libva info: User requested driver 'radeonsi'
libva info: Trying to open /usr/lib64/dri/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_4
libva info: va_openDriver() returns 0
[00007f4c78001f60] glconv_vaapi_x11 gl error: vaDeriveImage: operation failed
[00007f4c7c062b30] main video output error: video output creation failed
[00007f4c88056060] main decoder error: failed to create video output
```

Expected result:
Vlc should play vaapi as it does in Intel GPUs.



I have a vlc bug ticket which says that the driver is buggy here:
https://trac.videolan.org/vlc/ticket/21194

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