[PATCH 5/6] mfmediaengine: Close the media session on shutdown.

[Nikolay Sivov]

On 1/4/22 20:35, Derek Lesho wrote:
>   
>   failed:
> @@ -1297,6 +1302,7 @@ static void free_media_engine(struct media_engine *engine)
>       }
>       SysFreeString(engine->current_source);
>       DeleteCriticalSection(&engine->cs);
> +    CloseHandle(engine->session_closed);
>       free(engine->video_frame.buffer);
>       free(engine);
>   }
> @@ -1956,6 +1962,8 @@ static HRESULT WINAPI media_engine_Shutdown(IMFMediaEngine *iface)
>       else
>       {
>           media_engine_set_flag(engine, FLAGS_ENGINE_SHUT_DOWN, TRUE);
> +        IMFMediaSession_Close(engine->session);
> +        WaitForSingleObject(engine->session_closed, INFINITE);
>           IMFMediaSession_Shutdown(engine->session);
>       }

Could you explain what does this fix?
>       LeaveCriticalSection(&engine->cs);
> @@ -2451,6 +2459,7 @@ static HRESULT init_media_engine(DWORD flags, IMFAttributes *attributes, struct
>       engine->duration = NAN;
>       engine->video_frame.pts = MINLONGLONG;
>       InitializeCriticalSection(&engine->cs);
> +    engine->session_closed = CreateEventW(NULL, TRUE, FALSE, NULL);
>   
>       hr = IMFAttributes_GetUnknown(attributes, &MF_MEDIA_ENGINE_CALLBACK, &IID_IMFMediaEngineNotify,
>               (void **)&engine->callback);