[FFmpeg-devel] [PATCH 3/3] doc/examples: add QSV decode GPU copy sample

[Li, Zhong]

> From: ffmpeg-devel [mailto:ffmpeg-devel-bounces at ffmpeg.org] On Behalf
> Of Michael Niedermayer
> Sent: Wednesday, March 27, 2019 12:05 AM
> To: FFmpeg development discussions and patches
> <ffmpeg-devel at ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH 3/3] doc/examples: add QSV decode
> GPU copy sample
> 
> On Tue, Mar 26, 2019 at 01:39:49PM +0800, Linjie Fu wrote:
> > Usage is:
> >   ./qsvdec_gpucopy on/off input_stream output_stream
> >
> > For example:
> >  - enable/disable gpu copy:
> >   ./qsvdec_gpucopy on input.h264 output.yuv
> >   ./qsvdec_gpucopy off input.h264 output.yuv
> >
> > Generate fps per second.
> >
> > Signed-off-by: Linjie Fu <linjie.fu at intel.com>
> > ---
> >  configure                     |   2 +
> >  doc/examples/Makefile         |   1 +
> >  doc/examples/qsvdec_gpucopy.c | 276
> > ++++++++++++++++++++++++++++++++++
> >  3 files changed, 279 insertions(+)
> >  create mode 100644 doc/examples/qsvdec_gpucopy.c
> 
> breaks examples build on arm
> 
> In file included from src/doc/examples/qsvdec_gpucopy.c:43:0:
> src/libavcodec/qsv.h:24:26: fatal error: mfx/mfxvideo.h: No such file or
> directory compilation terminated.
> make: *** [doc/examples/qsvdec_gpucopy.o] Error 1
> make: *** Waiting for unfinished jobs....

It is caused by libmfx is not checked to configure this example in configure file. 
It is checked for doc/examples/qsvdec.c: qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder" 
Similar checking is needed for this example. 

However, I would like to suggestion to add gpu_copy option based on current qsvdec.c example (working in system memory path should be added too).