Mesa (master): st/omx: add workaround for bug in Bellagio

[Christian König]

Module: Mesa
Branch: master
Commit: b862cc23f203f1fd87edf44a32312491dce8bb91
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b862cc23f203f1fd87edf44a32312491dce8bb91

Author: Christian König <christian.koenig at amd.com>
Date:   Tue Jan 28 06:21:14 2014 -0700

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 at amd.com>

---

 src/gallium/state_trackers/omx/entrypoint.c |   13 +++++++++++++
 src/gallium/state_trackers/omx/entrypoint.h |    2 ++
 src/gallium/state_trackers/omx/vid_dec.c    |    3 +--
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/gallium/state_trackers/omx/entrypoint.c b/src/gallium/state_trackers/omx/entrypoint.c
index bc8664b..fb46849 100644
--- a/src/gallium/state_trackers/omx/entrypoint.c
+++ b/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);
+}
diff --git a/src/gallium/state_trackers/omx/entrypoint.h b/src/gallium/state_trackers/omx/entrypoint.h
index 41454be..af7c337 100644
--- a/src/gallium/state_trackers/omx/entrypoint.h
+++ b/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
diff --git a/src/gallium/state_trackers/omx/vid_dec.c b/src/gallium/state_trackers/omx/vid_dec.c
index 7be1dad..a747c51 100644
--- a/src/gallium/state_trackers/omx/vid_dec.c
+++ b/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)