[Bug 763321] Failed to play VAAPI HW JPEG decode for video clip with codec ID: MJPG

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Wed Mar 23 13:30:41 UTC 2016


https://bugzilla.gnome.org/show_bug.cgi?id=763321

Lim Siew Hoon <siew.hoon.lim at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #323395|0                           |1
        is obsolete|                            |

--- Comment #9 from Lim Siew Hoon <siew.hoon.lim at intel.com> ---
Created attachment 324589
  --> https://bugzilla.gnome.org/attachment.cgi?id=324589&action=edit
JPEG Decode: check values of horizontal and vertical sampling factors (v2)

Sreerenj,

I'm not sure how to make it become generic. Is it really all the video format
(h264, h265, MPEG2, VC1...JPEG) decode is using generic horizontal sampling
factor and vertical sampling factor? Maybe can you explain more a bit? Or send
me the link I can go read it. And come out properly fix.

Intel VA driver:
VA_FOURCC_NV12 
VA_FOURCC_P010
VA_FOURCC_YV12
VA_FOURCC_IMC1
VA_FOURCC_I420
VA_FOURCC_IYUV
VA_FOURCC_IMC3
    SUBSAMPLE_YUV420

VA_FOURCC_YUY2
VA_FOURCC_UYVY
VA_FOURCC_422H
VA_FOURCC_YV16
    SUBSAMPLE_YUV422H

VA_FOURCC_422V
    SUBSAMPLE_YUV422V

VA_FOURCC_RGBA
VA_FOURCC_RGBX
VA_FOURCC_BGRA
VA_FOURCC_BGRX
    SUBSAMPLE_RGBX

VA_FOURCC_Y800
    SUBSAMPLE_YUV400

VA_FOURCC_411P
    SUBSAMPLE_YUV411

VA_FOURCC_444P
    SUBSAMPLE_YUV444


#define SUBSAMPLE_YUV400        0 -> VA_RT_FORMAT_YUV400 (libva)    
#define SUBSAMPLE_YUV420        1 -> VA_RT_FORMAT_YUV420    
#define SUBSAMPLE_YUV422H       2 -> VA_RT_FORMAT_YUV422    
#define SUBSAMPLE_YUV422V       3 -> VA_RT_FORMAT_YUV422    
#define SUBSAMPLE_YUV444        4 -> VA_RT_FORMAT_YUV444    
#define SUBSAMPLE_YUV411        5 -> VA_RT_FORMAT_YUV411    
#define SUBSAMPLE_RGBX          6

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