[Libva] [PATCH V3][libva-intel-driver] Clear IECP state buffer when it is enabled

[Xiang, Haihao]

Applied. 

Thanks
Haihao

> It fixes a VEBOX GPU hang up issue while doing P010->NV12 CSC
> 
> v3: Remove the file mode changes
> 
> v2: Add VPP_IECP_CSC_TRANSFORM flag for the actual transform (YUV<-
> >RGB) operation.
> It removes the conflict meaning of proc_ctx->is_iecp_enabled and
> proc_ctx->filters_mask when no actual transform is required, such as
> P010->NV12
> 
> Signed-off-by: peng.chen <peng.c.chen at intel.com>
> ---
>  src/gen75_vpp_vebox.c | 38 +++++++++++++++++++++++++-------------
>  src/gen75_vpp_vebox.h |  1 +
>  2 files changed, 26 insertions(+), 13 deletions(-)
> 
> diff --git a/src/gen75_vpp_vebox.c b/src/gen75_vpp_vebox.c
> index 91715fc..d88a454 100644
> --- a/src/gen75_vpp_vebox.c
> +++ b/src/gen75_vpp_vebox.c
> @@ -794,7 +794,7 @@ void hsw_veb_iecp_pro_amp_table(VADriverContextP
> ctx, struct intel_vebox_context
>  }
>  
>  
> -void hsw_veb_iecp_csc_table(VADriverContextP ctx, struct
> intel_vebox_context *proc_ctx)
> +void hsw_veb_iecp_csc_transform_table(VADriverContextP ctx, struct
> intel_vebox_context *proc_ctx)
>  {
>      unsigned int *p_table = (unsigned int*)(proc_ctx-
> >iecp_state_table.ptr + 220);
>      float tran_coef[9] = {1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0,
> 1.0};
> @@ -802,7 +802,7 @@ void hsw_veb_iecp_csc_table(VADriverContextP ctx,
> struct intel_vebox_context *pr
>      float u_coef[3]    = {0.0, 0.0, 0.0};
>      int   is_transform_enabled = 0;
>  
> -    if(!(proc_ctx->filters_mask & VPP_IECP_CSC)){
> +    if(!(proc_ctx->filters_mask & VPP_IECP_CSC_TRANSFORM)){
>          memset(p_table, 0, 8 * 4);
>          return;
>      }
> @@ -929,7 +929,7 @@ void hsw_veb_state_table_setup(VADriverContextP
> ctx, struct intel_vebox_context
>          hsw_veb_iecp_ace_table(ctx, proc_ctx);
>          hsw_veb_iecp_tcc_table(ctx, proc_ctx);
>          hsw_veb_iecp_pro_amp_table(ctx, proc_ctx);
> -        hsw_veb_iecp_csc_table(ctx, proc_ctx);
> +        hsw_veb_iecp_csc_transform_table(ctx, proc_ctx);
>          hsw_veb_iecp_aoi_table(ctx, proc_ctx);
>     
>          dri_bo_unmap(iecp_bo);
> @@ -1196,8 +1196,21 @@
> gen75_vebox_ensure_surfaces_storage(VADriverContextP ctx,
>      /* Update VEBOX pipeline formats */
>      proc_ctx->fourcc_input = input_fourcc;
>      proc_ctx->fourcc_output = output_fourcc;
> -    if (input_fourcc != output_fourcc)
> -        proc_ctx->is_iecp_enabled = 1; // IECP needed for format
> conversion
> +    if (input_fourcc != output_fourcc) {
> +        proc_ctx->filters_mask |= VPP_IECP_CSC;
> +
> +        if (input_fourcc == VA_FOURCC_RGBA &&
> +            (output_fourcc == VA_FOURCC_NV12 ||
> +             output_fourcc == VA_FOURCC_P010)) {
> +            proc_ctx->filters_mask |= VPP_IECP_CSC_TRANSFORM;
> +        } else if (output_fourcc == VA_FOURCC_RGBA &&
> +                   (input_fourcc == VA_FOURCC_NV12 ||
> +                    input_fourcc == VA_FOURCC_P010)) {
> +            proc_ctx->filters_mask |= VPP_IECP_CSC_TRANSFORM;
> +        }
> +    }
> +
> +    proc_ctx->is_iecp_enabled = (proc_ctx->filters_mask &
> VPP_IECP_MASK) != 0;
>     
>      /* Create pipeline surfaces */
>      for (i = 0; i < ARRAY_ELEMS(proc_ctx->frame_store); i ++) {
> @@ -1602,6 +1615,10 @@ gen75_vebox_init_pipe_params(VADriverContextP
> ctx,
>              return VA_STATUS_ERROR_UNSUPPORTED_FILTER;
>          }
>      }
> +
> +    if(proc_ctx->filters_mask == 0)
> +        proc_ctx->filters_mask |= VPP_IECP_CSC;
> +
>      return VA_STATUS_SUCCESS;
>  }
>  
> @@ -1618,11 +1635,6 @@
> gen75_vebox_init_filter_params(VADriverContextP ctx,
>      proc_ctx->is_first_frame = 0;
>      proc_ctx->is_second_field = 0;
>  
> -    if(!proc_ctx->is_di_enabled && !proc_ctx->is_dn_enabled) {
> -        // MUST enable IECP if all DI&DN are disabled
> -        proc_ctx->is_iecp_enabled = 1;
> -    }
> -
>      /* Check whether we are deinterlacing the second field */
>      if (proc_ctx->is_di_enabled) {
>          const VAProcFilterParameterBufferDeinterlacing * const
> deint_params =
> @@ -2090,7 +2102,7 @@ skl_veb_dndi_table(VADriverContextP ctx, struct
> intel_vebox_context *proc_ctx)
>                      5 );          // sad tha
>  }
>  
> -void skl_veb_iecp_csc_table(VADriverContextP ctx, struct
> intel_vebox_context *proc_ctx)
> +void skl_veb_iecp_csc_transform_table(VADriverContextP ctx, struct
> intel_vebox_context *proc_ctx)
>  {
>      unsigned int *p_table = (unsigned int*)(proc_ctx-
> >iecp_state_table.ptr + 220);
>      float tran_coef[9] = {1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0,
> 1.0};
> @@ -2098,7 +2110,7 @@ void skl_veb_iecp_csc_table(VADriverContextP
> ctx, struct intel_vebox_context *pr
>      float u_coef[3]    = {0.0, 0.0, 0.0};
>      int   is_transform_enabled = 0;
>  
> -    if(!(proc_ctx->filters_mask & VPP_IECP_CSC)){
> +    if(!(proc_ctx->filters_mask & VPP_IECP_CSC_TRANSFORM)){
>          memset(p_table, 0, 12 * 4);
>          return;
>      }
> @@ -2226,7 +2238,7 @@ void skl_veb_state_table_setup(VADriverContextP
> ctx, struct intel_vebox_context
>          hsw_veb_iecp_ace_table(ctx, proc_ctx);
>          hsw_veb_iecp_tcc_table(ctx, proc_ctx);
>          hsw_veb_iecp_pro_amp_table(ctx, proc_ctx);
> -        skl_veb_iecp_csc_table(ctx, proc_ctx);
> +        skl_veb_iecp_csc_transform_table(ctx, proc_ctx);
>          skl_veb_iecp_aoi_table(ctx, proc_ctx);
>  
>          dri_bo_unmap(iecp_bo);
> diff --git a/src/gen75_vpp_vebox.h b/src/gen75_vpp_vebox.h
> index a0d5e2e..31c5c4e 100644
> --- a/src/gen75_vpp_vebox.h
> +++ b/src/gen75_vpp_vebox.h
> @@ -50,6 +50,7 @@
>  #define VPP_IECP_PRO_AMP   0x00000800
>  #define VPP_IECP_CSC       0x00001000
>  #define VPP_IECP_AOI       0x00002000
> +#define VPP_IECP_CSC_TRANSFORM 0x00004000
>  #define VPP_IECP_MASK      0x0000ff00
>  #define MAX_FILTER_SUM     8
>