[Libva] VAAPI encoding with Intel Sandybridge GPU

[Xiang, Haihao]

> -----Original Message-----
> From: Ratin [mailto:ratin3 at gmail.com]
> Sent: Saturday, August 11, 2012 6:22 AM
> To: Xiang, Haihao
> Cc: Libva at lists.freedesktop.org
> Subject: Re: [Libva] VAAPI encoding with Intel Sandybridge GPU
> 
> Hi Haihao, Thanks a lot for your quick reply!
> 
> On Thu, Aug 9, 2012 at 10:41 PM, Xiang, Haihao <haihao.xiang at intel.com>
> wrote:
> >
> >> Hi,
> >>
> >> I am trying to use libva with Intel driver back-end for decode and
> >> encode. Decoding works like charm, but when I try to encode, I get
> >> some problems.
> >
> > Which branch are you using, staging or master ? Encoder on staging has
> > more features.
> 
> I was using an older version libva-1.0.15 and  intel-driver-1.0.17. I tried to
> compile the latest versions (master branch?) from git repos
> git://anongit.freedesktop.org/git/libva and
> git://anongit.freedesktop.org/vaapi/intel-driver and  but met with some
> compile errorrs in intel-driver:
> 
> CC     i965_drv_video_la-gen6_mfc.lo
> gen6_mfc.c: In function 'gen6_mfc_avc_pipeline_programing':
> gen6_mfc.c:763:5: error: unknown type name
> 'VAEncSequenceParameterBufferH264'
> gen6_mfc.c:763:61: error: 'VAEncSequenceParameterBufferH264'
> undeclared (first use in this function)
> gen6_mfc.c:763:61: note: each undeclared identifier is reported only once for
> each function it appears in
> gen6_mfc.c:763:95: error: expected expression before ')' token
> gen6_mfc.c:782:40: error: request for member 'initial_qp' in something not a
> structure or union
> gen6_mfc.c: In function 'gen6_mfc_avc_prepare':
> gen6_mfc.c:848:5: error: unknown type name
> 'VAEncPictureParameterBufferH264'
> gen6_mfc.c:848:55: error: 'VAEncPictureParameterBufferH264' undeclared
> (first use in this function)
> gen6_mfc.c:848:88: error: expected expression before ')' token
> gen6_mfc.c:852:19: error: request for member 'reconstructed_picture'
> in something not a structure or union
> gen6_mfc.c:863:19: error: request for member 'reference_picture' in
> something not a structure or union
> gen6_mfc.c:875:18: error: request for member 'coded_buf' in something not a
> structure or union
> gen6_mfc.c: At top level:
> gen6_mfc.c:388:13: warning: 'gen6_mfc_avc_directmode_state' defined but
> not used [-Wunused-function]
> gen6_mfc.c:599:1: warning: 'gen6_mfc_avc_insert_object' defined but not
> used [-Wunused-function]
> make[3]: *** [i965_drv_video_la-gen6_mfc.lo] Error 1
> 
> VAEncPictureParameterBufferH264 is declared in va.h but even if I explicitly
> add the include file, it still cant find the struct.

A strange error :(.  Could you use 'make V=1' to see what is the executing commands ?

> 
> 
> 
> >> I got the same errors using the sample code provided by Intel for
> >> encoding , I get the error :
> >>
> >> video: 720x480; fourcc:0x56595559
> >> negotiated frame resolution: 640x480
> >> libva: VA-API version 0.32.0
> >> libva: va_getDriverName() returns 0
> >> libva: Trying to open /usr/local/lib/dri/i965_drv_video.so
> >> libva: va_openDriver() returns 0
> >> encode frame:0
> >> h264enc: i965_drv_video.c:1408: i965_EndPicture: Assertion
> >> `obj_context->codec_state.encode.seq_param' failed.
> >> Aborted
> >
> > Try with avcenc in test/encode
> >
> 
> For now , I am just focusing on any successful encoding , so I recompiled the
> older version of Intel  driver version and went ahead to encode an yuv video
> file using avcenc. After some fixing here and there (mostly
> rate_control_method defaulting to 16 which the older driver does not support )
> I am stuck at a point where its trying to create the buffer inside begin_picture
> function:

The older driver should work. Could you double check whether there is another libva in your machine ?

> 
>  va_status = vaCreateBuffer(va_dpy,
>                                    avcenc_context.context_id,
> 
> VAEncPackedHeaderParameterBufferType,
>                                    sizeof(packed_header_param_buffer),
> 1, &packed_header_param_buffer,
> 
> &avcenc_context.packed_seq_header_param_buf_id);
>         CHECK_VASTATUS(va_status,"vaCreateBuffer");
> 
> (gdb) p va_status
> $6 = 15
> (gdb) n
> begin_picture:vaCreateBuffer (467) failed,exit [Inferior 1 (process 15135) exited
> with code 01]
> warning: Error removing breakpoint 0
> warning: Error removing breakpoint 0
> warning: Error removing breakpoint 0
> warning: Error removing breakpoint 0
> warning: Error removing breakpoint 0
> 
> so I think I need to successfully compile the latest intel-driver. Is
> git://anongit.freedesktop.org/git/libva and
> git://anongit.freedesktop.org/vaapi/intel-driver the right repository to use?
> 

Yes. Note you should use same branch name for libva and intel-driver.

Thanks
Haihao

> Thanks and regards,
> 
> Ratin