st/omx: add workaround for bug in Bellagio

Not blocking for the message thread can lead to accessing freed up memory.

Signed-off-by: Christian König <christian.koenig@amd.com>

src/gallium/state_trackers/omx/entrypoint.c

@@ -98,3 +98,16 @@ void omx_put_screen(void)
    }
    pipe_mutex_unlock(omx_lock);
 }
+
+OMX_ERRORTYPE omx_workaround_Destructor(OMX_COMPONENTTYPE *comp)
+{
+   omx_base_component_PrivateType* priv = (omx_base_component_PrivateType*)comp->pComponentPrivate;
+
+   priv->state = OMX_StateInvalid;
+   tsem_up(priv->messageSem);
+
+   /* wait for thread to exit */;
+   pthread_join(priv->messageHandlerThread, NULL);
+
+   return omx_base_component_Destructor(comp);
+}

src/gallium/state_trackers/omx/entrypoint.h

@@ -43,4 +43,6 @@ extern int omx_component_library_Setup(stLoaderComponentType **stComponents);
 struct vl_screen *omx_get_screen(void);
 void omx_put_screen(void);
 
+OMX_ERRORTYPE omx_workaround_Destructor(OMX_COMPONENTTYPE *comp);
+
 #endif

src/gallium/state_trackers/omx/vid_dec.c

@@ -247,8 +247,7 @@ static OMX_ERRORTYPE vid_dec_Destructor(OMX_COMPONENTTYPE *comp)
    if (priv->screen)
       omx_put_screen();
 
-   omx_base_filter_Destructor(comp);
-   return OMX_ErrorNone;
+   return omx_workaround_Destructor(comp);
 }
 
 static OMX_ERRORTYPE vid_dec_SetParameter(OMX_HANDLETYPE handle, OMX_INDEXTYPE idx, OMX_PTR param)