[Mesa-dev] [PATCH 02/11] vl: add entry point

Zhang, Boyuan Boyuan.Zhang at amd.com
Thu Jul 14 15:06:50 UTC 2016


For example, in patch 5/11 when " VaCreateContext", we used to CALLOC_STRUCT for "pps" and "sps" whenever we see video format is H.264. This is fine for decode ONLY case. Now, since we added H.264 encoding, "pps" and "sps" shouldn't be allocated. So we need to use the entry_point to determine this is H.264 decode or H.264 encode. We can use config to determine the entrypoint since config_id is passed to us for VaCreateContext call. However, for VaDestoyContext call, only context_id is passed to us. So we need to know the entrypoint in order to not free the pps/sps for encoding case.

Regard,
Boyuan

    case PIPE_VIDEO_FORMAT_MPEG4_AVC:
          context->templat.max_references = 0;
-         context->desc.h264.pps = CALLOC_STRUCT(pipe_h264_pps);
-         if (!context->desc.h264.pps) {
-            FREE(context);
-            return VA_STATUS_ERROR_ALLOCATION_FAILED;
-         }
-         context->desc.h264.pps->sps = CALLOC_STRUCT(pipe_h264_sps);
-         if (!context->desc.h264.pps->sps) {
-            FREE(context->desc.h264.pps);
-            FREE(context);
-            return VA_STATUS_ERROR_ALLOCATION_FAILED;
+         if (config->entrypoint != PIPE_VIDEO_ENTRYPOINT_ENCODE) {
+            context->desc.h264.pps = CALLOC_STRUCT(pipe_h264_pps);
+            if (!context->desc.h264.pps) {
+               FREE(context);
+               return VA_STATUS_ERROR_ALLOCATION_FAILED;
+            }
+            context->desc.h264.pps->sps = CALLOC_STRUCT(pipe_h264_sps);
+            if (!context->desc.h264.pps->sps) {
+               FREE(context->desc.h264.pps);
+               FREE(context);
+               return VA_STATUS_ERROR_ALLOCATION_FAILED;
+            }
          }
          break;

-----Original Message-----
From: Christian K├Ânig [mailto:deathsimple at vodafone.de] 
Sent: July-14-16 4:07 AM
To: Zhang, Boyuan; mesa-dev at lists.freedesktop.org
Subject: Re: [PATCH 02/11] vl: add entry point

Am 14.07.2016 um 00:51 schrieb Boyuan Zhang:
> Add entry point for encoding which previously hardcoded for decoding 
> purpose only

I still can't figure out why we would want this? The variable doesn't seem to be used in the whole patchset.

Christian.

>
> Signed-off-by: Boyuan Zhang <boyuan.zhang at amd.com>
> ---
>   src/gallium/include/pipe/p_video_state.h | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/src/gallium/include/pipe/p_video_state.h 
> b/src/gallium/include/pipe/p_video_state.h
> index 754d013..39b3905 100644
> --- a/src/gallium/include/pipe/p_video_state.h
> +++ b/src/gallium/include/pipe/p_video_state.h
> @@ -131,6 +131,7 @@ enum pipe_h264_enc_rate_control_method
>   struct pipe_picture_desc
>   {
>      enum pipe_video_profile profile;
> +   enum pipe_video_entrypoint entry_point;
>   };
>   
>   struct pipe_quant_matrix



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