UVD status on loongson 3a platform

[Dieter Nützel]

Am 2013-04-19 17:34, schrieb Christian König:
> Am 19.04.2013 10:51, schrieb Chen Jie:
> Hi all,
> 
> Recently, the uvd supporting is released, and we've tried it on
> loongson 3a platform.
> Brief introduction about loongson 3a, it's a MIPS III compatible, 4
> cores processor.
> 
> More details about the platform [1]:
> * The Board: RS780E + SB710 chipset, with an AMD radeon HD6570 video 
> card
> * The kernel is 64bits(n64 ABI), and the userland is 32bits(o32 ABI)
> * OS: LOonux 3.3.6 [2] + LTP-uvd-installer-20130419.bin [3]
> ** kernel: 3.9 + uvd related patches
> ** mesa: git master version (d0e9aa)
> 
> We tried three video samples:
> * big_buck_bunny_1080p_h264.mov
> (http://mirrorblender.top-ix.org/peach/bigbuckbunny_movies/big_buck_bunny_1080p_h264.mov)
> * Sintel.2010.2K.x264-VODO.mp4
> (http://dev.lemote.com/files/upload/software/UVD-debug/Sintel.2010.2K.x264-VODO.mp4)
> * test.avi 
> (http://dev.lemote.com/files/upload/software/UVD-debug/test.avi)
> 
> For big_buck_bunny_1080p_h264.mov, the playback is not very fluent at
> the beginning, and it has some video mosaic. We've recorded a video
> for it, see 
> http://dev.lemote.com/files/upload/software/UVD-debug/bbb-1080P.mp4
> For video mosaic, what could it be caused by?
> 
> That looks like a known problem with the semaphores and also happens
> on X86, it gets worse when you have a slower CPU and/or less bandwidth
> cause then UVD needs to block on the DMA to wait till everything is in
> place. I'm going to try to release the workaround for it.

With '...when you have a slower CPU and/or less bandwidth...' you 
naturally mean my Duron 1800/RV730 AGP (!!!) system, am I right? ;-)

Yes, that's the problem I get since the 'shadow' is fixed.
I can get it much faster when I go forward or backward in mplayer.

Do you have anything released?

> For Sintel.2010.2K.x264-VODO.mp4, it has a very long wait for the first 
> frame.
> We've also recorded a video for it, see
> http://dev.lemote.com/files/upload/software/UVD-debug/sintel.2K.mp4
> Any idea about the long wait for the first frame?
> 
> No idea, that also happens on X86, but the wait is actually not as
> long. If I'm not completely wrong it seems to be mplayer who is
> causing this startup delay.

I mostly don't see such delay, here.
But hey, I get this with test.avi, now:

[VD_FFMPEG] Trying pixfmt=0.
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [vdpau] 1920x1080 => 1920x1080 H.264 VDPAU acceleration
[VD_FFMPEG] XVMC-accelerated MPEG-2.
radeon: The kernel rejected CS, see dmesg for more information.105 0
radeon: The kernel rejected CS, see dmesg for more information.107 0

[ 8362.657224] [drm:radeon_uvd_cs_msg] *ERROR* Invalid UVD handle!
[ 8362.657236] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !
[ 8362.693846] [drm:radeon_uvd_cs_msg] *ERROR* Invalid UVD handle!
[ 8362.693859] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !
[ 8362.726656] [drm:radeon_uvd_cs_reloc] *ERROR* buffer to small 
(3342336 / 7077888)!
[ 8362.726668] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !
[ 8427.206169] [drm:radeon_uvd_cs_reloc] *ERROR* buffer to small 
(3342336 / 7077888)!
[ 8427.206179] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !
[ 8428.296537] [drm:radeon_uvd_cs_reloc] *ERROR* buffer to small 
(3342336 / 7077888)!
[ 8428.296548] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !

> For test.avi(video: ITU H.264, 1920x1080), it's playing back
> perfectly! Thanks for the effort on UVD!

Perfectly, with such mosaic, after some few seconds?
And your test.avi is not seekable.

A:   7.7 V:   7.7 A-V:  0.002 ct: -0.074 231/231 49% 108%  3.5% 131 0
Cannot seek in raw AVI streams. (Index required, try with the -idx 
switch.)
A:   8.7 V:   8.5 A-V:  0.198 ct: -0.076 254/254 45% 104%  3.3% 132 0
Cannot seek in raw AVI streams. (Index required, try with the -idx 
switch.)
A:   9.6 V:   9.1 A-V:  0.495 ct: -0.063 272/272 42% 107%  3.8% 139 0
Cannot seek in raw AVI streams. (Index required, try with the -idx 
switch.)
A:  10.7 V:  10.6 A-V:  0.076 ct: -0.068 319/319 36% 100%  3.4% 178 0
Cannot seek in raw AVI streams. (Index required, try with the -idx 
switch.)
A:  36.4 V:  36.4 A-V: -0.004 ct: -0.081 1092/1092 12% 32%  1.6% 182 0

Cheers,
Dieter

PS Alex's drm-next-3.10, mesa master, drm-2.4.44 master