[Libva] VAConfigAttribRTFormat

[Ratin]

On Mon, Jan 28, 2013 at 8:13 PM, Li, Xiaowei A <xiaowei.a.li at intel.com>wrote:

>  Yes, it should be like this, if you still have concern, you can map the
> surface out and dump to one bmp file to check.****
>
> ** **
>
> *From:* Ratin [mailto:ratin3 at gmail.com]
> *Sent:* Tuesday, January 29, 2013 11:40 AM
> *To:* Li, Xiaowei A
> *Cc:* Libva at lists.freedesktop.org
> *Subject:* Re: [Libva] VAConfigAttribRTFormat****
>
> ** **
>
> Awesome, the decoder I am working with does support it and when i create
> the surface with BGRA fourcc, the decoding still happens - so I am assuming
> if I get the decoded bistream, the data  will already be packed in BGRA
> format - correct ? ****
>
> Thanks a bunch!****
>
> Ratin****
>
> **
>

I believe that I was mistaken when I said "the decoder I am working with
does support it", as the attrib value I get from the query function is
actually just 1 (VA_RT_FORMAT_YUV420)

>  attrib.type = VAConfigAttribRTFormat;
vaGetConfigAttributes(pVAAPICNTX->vaDisplay, VAProfile, VAEntrypointVLD,
&attrib, 1);


(gdb) p attrib
$1 = {type = VAConfigAttribRTFormat, value = 1}


Is there a Intel HD Graphics chip model that supports directly decoding to
BGRA format surfaces?


On Mon, Jan 28, 2013 at 5:32 PM, Li, Xiaowei A <xiaowei.a.li at intel.com>
> wrote:****
>
> According to  my understanding, VAConfigAttribRTFormat is used to describe
> the surface sample format, for example YUV420 , YUV422, RGB32, and
> VASurfaceAtrribPixelFormat aims to specify the detailed pixel storage
> layout,  for example,  one YUV420 surface can be stored with YV12/NV12/I420
> pixel format and one RGB32 surface can be stored with RGBA/ARGB pixel
> format.****
>
>          You can query whether VA_RT_FORMAT_RGB32 is supported as a render
> target format through “vaGetConfigAttributes()”, if supported, you can
> specify the BGRA fourcc when creating a render target surface.****
>
>          Usually , video decoder only support YUV420 as decoding output,
> one color conversion is need to get BGRA surface.****
>
>  ****
>
> Thanks,****
>
> Xiaowei****
>
>  ****
>
> *From:* libva-bounces+xiaowei.a.li=intel.com at lists.freedesktop.org[mailto:
> libva-bounces+xiaowei.a.li=intel.com at lists.freedesktop.org] *On Behalf Of
> *Ratin
> *Sent:* Tuesday, January 29, 2013 6:19 AM
> *To:* Libva at lists.freedesktop.org
> *Subject:* [Libva] VAConfigAttribRTFormat****
>
>  ****
>
> Hi got a question:
>
> I noticed that the #define values for for VAConfigAttribRTFormat in
> VAConfigAttrib does not include BGRA or ARGB formats (it does RGB 16 and
> RGB32), but the VASurfaceAttrib's VASurfaceAttribPixelFormat does allow it
> thru a four_cc value. Does that mean I can't decode the H.264 bitstream
> data directly to a BGRA surface, I have to convert explicitly?
>
> ****
>
> /* attribute value for VAConfigAttribRTFormat */
> #define VA_RT_FORMAT_YUV420    0x00000001
> #define VA_RT_FORMAT_YUV422    0x00000002
> #define VA_RT_FORMAT_YUV444    0x00000004
> #define VA_RT_FORMAT_YUV411    0x00000008
> #define VA_RT_FORMAT_YUV400    0x00000010
> #define VA_RT_FORMAT_RGB16    0x00010000
> #define VA_RT_FORMAT_RGB32    0x00020000
> #define VA_RT_FORMAT_PROTECTED    0x80000000****
>
> Thanks****
>
> Ratin****
>
> ** **
>
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