Re: [FFmpeg-devel] [PATCH V3 2/2] libavutil/hwcontext_opencl: fix a bug for mapping qsv frame to opencl

["Xiang, Haihao" <haihao.xiang@intel.com>]

On Fri, 2021-12-10 at 13:38 +0800, Wenbin Chen wrote:
> From: nyanmisaka <nst799610810@gmail.com>
> 
> mfxHDLPair was added to qsv, so modify qsv->opencl map function as well.
> Now the following commandline works:
> 
> ffmpeg -v verbose -init_hw_device vaapi=va:/dev/dri/renderD128 \
> -init_hw_device qsv=qs@va -init_hw_device opencl=ocl@va -filter_hw_device ocl
> \
> -hwaccel qsv -hwaccel_output_format qsv -hwaccel_device qs -c:v h264_qsv \
> -i input.264 -vf "hwmap=derive_device=opencl,format=opencl,avgblur_opencl, \
> hwmap=derive_device=qsv:reverse=1:extra_hw_frames=32,format=qsv" \
> -c:v h264_qsv output.264
> 
> Signed-off-by: nyanmisaka <nst799610810@gmail.com>
> Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
> ---
>  libavutil/hwcontext_opencl.c | 3 ++-
>  libavutil/hwcontext_qsv.h    | 5 +++++
>  2 files changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/libavutil/hwcontext_opencl.c b/libavutil/hwcontext_opencl.c
> index 26a3a24593..ab812999cd 100644
> --- a/libavutil/hwcontext_opencl.c
> +++ b/libavutil/hwcontext_opencl.c
> @@ -48,6 +48,7 @@
>  #if HAVE_OPENCL_VAAPI_INTEL_MEDIA
>  #if CONFIG_LIBMFX
>  #include <mfx/mfxstructures.h>
> +#include "hwcontext_qsv.h"
>  #endif
>  #include <va/va.h>
>  #include <CL/cl_va_api_media_sharing_intel.h>
> @@ -2249,7 +2250,7 @@ static int opencl_map_from_qsv(AVHWFramesContext
> *dst_fc, AVFrame *dst,
>  #if CONFIG_LIBMFX
>      if (src->format == AV_PIX_FMT_QSV) {
>          mfxFrameSurface1 *mfx_surface = (mfxFrameSurface1*)src->data[3];
> -        va_surface = *(VASurfaceID*)mfx_surface->Data.MemId;
> +        va_surface = *MFXSURFACEP_TO_VASURFACEP(mfx_surface);
>      } else
>  #endif
>          if (src->format == AV_PIX_FMT_VAAPI) {
> diff --git a/libavutil/hwcontext_qsv.h b/libavutil/hwcontext_qsv.h
> index b98d611cfc..957df01ef1 100644
> --- a/libavutil/hwcontext_qsv.h
> +++ b/libavutil/hwcontext_qsv.h
> @@ -29,6 +29,11 @@
>   * contain AVBufferRefs whose data pointer points to an mfxFrameSurface1
> struct.
>   */
>  
> +#if CONFIG_VAAPI
> +#define MFXSURFACEP_TO_VASURFACEP(surf) \
> +    (VASurfaceID*)(((mfxHDLPair*)surf->Data.MemId)->first)
> +#endif
> +

Is it possible to remove the dependency on VAAPI in a public qsv header file ? 

Thanks
Haihao

>  /**
>   * This struct is allocated as AVHWDeviceContext.hwctx
>   */
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