Re: [FFmpeg-devel] [PATCH V4 2/2] libavutil/hwcontext_opencl: fix a bug for mapping qsv frame to opencl

["Xiang, Haihao" <haihao.xiang-at-intel.com@ffmpeg.org>]

On Fri, 2022-01-07 at 15:36 +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 | 14 +++++++++++++-
>  libavutil/hwcontext_qsv.c    | 34 ++++++++++++++++++++++++++++++++++
>  2 files changed, 47 insertions(+), 1 deletion(-)
> 
> diff --git a/libavutil/hwcontext_opencl.c b/libavutil/hwcontext_opencl.c
> index 26a3a24593..ceaef26f1c 100644
> --- a/libavutil/hwcontext_opencl.c
> +++ b/libavutil/hwcontext_opencl.c
> @@ -72,6 +72,12 @@
>  #include "hwcontext_drm.h"
>  #endif
>  
> +#if HAVE_OPENCL_VAAPI_INTEL_MEDIA
> +extern int ff_qsv_get_surface_base_handle(mfxFrameSurface1 *surf,
> +                                          enum AVHWDeviceType base_dev_typ,
> +                                          void **base_handle);
> +#endif

opencl_vaapi_intel_media can be enabled without libmfx. 

Thanks
Haihao


> +
>  
>  typedef struct OpenCLDeviceContext {
>      // Default command queue to use for transfer/mapping operations on
> @@ -2248,8 +2254,14 @@ static int opencl_map_from_qsv(AVHWFramesContext
> *dst_fc, AVFrame *dst,
>  
>  #if CONFIG_LIBMFX
>      if (src->format == AV_PIX_FMT_QSV) {
> +        void *base_handle;
>          mfxFrameSurface1 *mfx_surface = (mfxFrameSurface1*)src->data[3];
> -        va_surface = *(VASurfaceID*)mfx_surface->Data.MemId;
> +        err = ff_qsv_get_surface_base_handle(mfx_surface,
> +                                             AV_HWDEVICE_TYPE_VAAPI,
> +                                             &base_handle);
> +        if (err < 0)
> +            return err;
> +        va_surface = *(VASurfaceID *)base_handle;
>      } else
>  #endif
>          if (src->format == AV_PIX_FMT_VAAPI) {
> diff --git a/libavutil/hwcontext_qsv.c b/libavutil/hwcontext_qsv.c
> index 853fb7f60d..6d9b8324c2 100644
> --- a/libavutil/hwcontext_qsv.c
> +++ b/libavutil/hwcontext_qsv.c
> @@ -112,6 +112,40 @@ static const struct {
>  #endif
>  };
>  
> +extern int ff_qsv_get_surface_base_handle(mfxFrameSurface1 *surf,
> +                                          enum AVHWDeviceType base_dev_type,
> +                                          void **base_handle);
> +
> +/**
> + * Caller needs to allocate enough space for base_handle pointer.
> + **/
> +int ff_qsv_get_surface_base_handle(mfxFrameSurface1 *surf,
> +                                   enum AVHWDeviceType base_dev_type,
> +                                   void **base_handle)
> +{
> +    mfxHDLPair *handle_pair;
> +    handle_pair = surf->Data.MemId;
> +    switch (base_dev_type) {
> +#if CONFIG_VAAPI
> +    case AV_HWDEVICE_TYPE_VAAPI:
> +        base_handle[0] = handle_pair->first;
> +        return 0;
> +#endif
> +#if CONFIG_D3D11VA
> +    case AV_HWDEVICE_TYPE_D3D11VA:
> +        base_handle[0] = handle_pair->first;
> +        base_handle[1] = handle_pair->secode;
> +        return 0;
> +#endif
> +#if CONFIG_DXVA2
> +    case AV_HWDEVICE_TYPE_DXVA2:
> +        base_handle[0] = handle_pair->first;
> +        return 0;
> +#endif
> +    }
> +    return AVERROR(EINVAL);
> +}
> +
>  static uint32_t qsv_fourcc_from_pix_fmt(enum AVPixelFormat pix_fmt)
>  {
>      int i;
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