[mmalrenderer] Add shared lock around MMAL operations

xbmc/cores/VideoRenderers/MMALRenderer.cpp

@@ -41,6 +41,7 @@
 
 CRenderInfo CMMALRenderer::GetRenderInfo()
 {
+  CSingleLock lock(m_sharedSection);
   CRenderInfo info;
 
   // we'll assume that video is accelerated (RENDER_FMT_MMAL) for now
@@ -92,6 +93,7 @@ static void vout_input_port_cb_static(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *b
 
 bool CMMALRenderer::init_vout(ERenderFormat format)
 {
+  CSingleLock lock(m_sharedSection);
   bool formatChanged = m_format != format;
   MMAL_STATUS_T status;
 
@@ -223,6 +225,7 @@ CMMALRenderer::CMMALRenderer()
 
 CMMALRenderer::~CMMALRenderer()
 {
+  CSingleLock lock(m_sharedSection);
   CLog::Log(LOGDEBUG, "%s::%s", CLASSNAME, __func__);
   // shutdown thread
   mmal_queue_put(m_release_queue, &m_quit_packet);
@@ -245,6 +248,7 @@ void CMMALRenderer::AddProcessor(CMMALVideoBuffer *buffer, int index)
 
 bool CMMALRenderer::Configure(unsigned int width, unsigned int height, unsigned int d_width, unsigned int d_height, float fps, unsigned flags, ERenderFormat format, unsigned extended_format, unsigned int orientation)
 {
+  CSingleLock lock(m_sharedSection);
   ReleaseBuffers();
 
   m_sourceWidth  = width;
@@ -372,6 +376,7 @@ void CMMALRenderer::Update()
 
 void CMMALRenderer::RenderUpdate(bool clear, DWORD flags, DWORD alpha)
 {
+  CSingleLock lock(m_sharedSection);
   int source = m_iYV12RenderBuffer;
 #if defined(MMAL_DEBUG_VERBOSE)
   CLog::Log(LOGDEBUG, "%s::%s - %d %x %d %d", CLASSNAME, __func__, clear, flags, alpha, source);
@@ -430,6 +435,7 @@ void CMMALRenderer::RenderUpdate(bool clear, DWORD flags, DWORD alpha)
 
 void CMMALRenderer::FlipPage(int source)
 {
+  CSingleLock lock(m_sharedSection);
   if (!m_bConfigured || m_format == RENDER_FMT_BYPASS)
     return;
 
@@ -442,6 +448,7 @@ void CMMALRenderer::FlipPage(int source)
 
 unsigned int CMMALRenderer::PreInit()
 {
+  CSingleLock lock(m_sharedSection);
   m_bConfigured = false;
   UnInit();
 
@@ -473,6 +480,7 @@ void CMMALRenderer::ReleaseBuffers()
 
 void CMMALRenderer::UnInitMMAL()
 {
+  CSingleLock lock(m_sharedSection);
   CLog::Log(LOGDEBUG, "%s::%s pool(%p)", CLASSNAME, __func__, m_vout_input_pool);
   if (m_vout)
   {
@@ -590,6 +598,7 @@ void CMMALRenderer::SetVideoRect(const CRect& InSrcRect, const CRect& InDestRect
   // we get called twice a frame for left/right. Can ignore the rights.
   if (g_graphicsContext.GetStereoView() == RENDER_STEREO_VIEW_RIGHT)
     return;
+  CSingleLock lock(m_sharedSection);
 
   if (!m_vout_input)
     return;

xbmc/cores/VideoRenderers/MMALRenderer.h

@@ -108,6 +108,7 @@ class CMMALRenderer : public CBaseRenderer, public CThread
   RENDER_STEREO_MODE        m_display_stereo_mode;
   bool                      m_StereoInvert;
 
+  CCriticalSection m_sharedSection;
   MMAL_COMPONENT_T *m_vout;
   MMAL_PORT_T *m_vout_input;
   MMAL_POOL_T *m_vout_input_pool;