winrenderer: implement flush, fixes loss of video when moving window …

…to other screen

xbmc/cores/VideoRenderers/WinRenderer.cpp

@@ -310,6 +310,9 @@ int CWinRenderer::GetImage(YV12Image *image, int source, bool readonly)
 
   YUVBuffer *buf = (YUVBuffer*)m_VideoBuffers[source];
 
+  if (buf->IsReadyToRender())
+    return -1;
+
   image->cshift_x = 1;
   image->cshift_y = 1;
   image->height = m_sourceHeight;
@@ -483,6 +486,18 @@ void CWinRenderer::UnInit()
   }
 }
 
+void CWinRenderer::Flush()
+{
+  PreInit();
+  SetViewMode(CMediaSettings::Get().GetCurrentVideoSettings().m_ViewMode);
+  ManageDisplay();
+
+  m_bConfigured = true;
+
+  SelectRenderMethod();
+  UpdateRenderMethod();
+}
+
 bool CWinRenderer::CreateIntermediateRenderTarget(unsigned int width, unsigned int height)
 {
   // Initialize a render target for intermediate rendering
@@ -705,6 +720,9 @@ void CWinRenderer::Render(DWORD flags)
     return;
   }
 
+  if (!m_VideoBuffers[m_iYV12RenderBuffer]->IsReadyToRender())
+    return;
+
   UpdateVideoFilter();
 
   // Optimize later? we could get by with bilinear under some circumstances
@@ -1200,9 +1218,6 @@ bool CWinRenderer::CreateYV12Texture(int index)
   buf->StartDecode();
   buf->Clear();
 
-  if(index == m_iYV12RenderBuffer)
-    buf->StartRender();
-
   CLog::Log(LOGDEBUG, "created video buffer %i", index);
   return true;
 }
@@ -1428,6 +1443,11 @@ void YUVBuffer::Release()
 
 void YUVBuffer::StartRender()
 {
+  if (!m_locked)
+    return;
+
+  m_locked = false;
+
   for(unsigned i = 0; i < m_activeplanes; i++)
   {
     if(planes[i].texture.Get() && planes[i].rect.pBits)
@@ -1439,6 +1459,11 @@ void YUVBuffer::StartRender()
 
 void YUVBuffer::StartDecode()
 {
+  if (m_locked)
+    return;
+
+  m_locked = true;
+
   for(unsigned i = 0; i < m_activeplanes; i++)
   {
     if(planes[i].texture.Get()
@@ -1498,4 +1523,11 @@ void YUVBuffer::Clear()
   }
 }
 
+bool YUVBuffer::IsReadyToRender()
+{
+  if (!m_locked)
+    return true;
+  return false;
+}
+
 #endif

xbmc/cores/VideoRenderers/WinRenderer.h

@@ -95,6 +95,7 @@ struct SVideoBuffer
   virtual void StartDecode() {};        // Prepare the buffer to receive data from dvdplayer
   virtual void StartRender() {};        // dvdplayer finished filling the buffer with data
   virtual void Clear() {};              // clear the buffer with solid black
+  virtual bool IsReadyToRender() { return true; };
 };
 
 // YV12 decoder textures
@@ -106,14 +107,15 @@ struct SVideoPlane
 
 struct YUVBuffer : SVideoBuffer
 {
-  YUVBuffer() : m_width (0), m_height(0), m_format(RENDER_FMT_NONE), m_activeplanes(0) {}
+  YUVBuffer() : m_width(0), m_height(0), m_format(RENDER_FMT_NONE), m_activeplanes(0), m_locked(false) {}
   ~YUVBuffer();
   bool Create(ERenderFormat format, unsigned int width, unsigned int height);
   virtual void Release();
   virtual void StartDecode();
   virtual void StartRender();
   virtual void Clear();
   unsigned int GetActivePlanes() { return m_activeplanes; }
+  virtual bool IsReadyToRender();
 
   SVideoPlane planes[MAX_PLANES];
 
@@ -122,6 +124,7 @@ struct YUVBuffer : SVideoBuffer
   unsigned int     m_height;
   ERenderFormat    m_format;
   unsigned int     m_activeplanes;
+  bool             m_locked;
 };
 
 struct DXVABuffer : SVideoBuffer
@@ -156,6 +159,7 @@ class CWinRenderer : public CBaseRenderer
   virtual void         UnInit();
   virtual void         Reset(); /* resets renderer after seek for example */
   virtual bool         IsConfigured() { return m_bConfigured; }
+  virtual void         Flush();
 
   virtual std::vector<ERenderFormat> SupportedFormats() { return m_formats; }
 

xbmc/rendering/dx/RenderSystemDX.cpp

@@ -36,6 +36,7 @@
 #include "Util.h"
 #include "win32/WIN32Util.h"
 #include "video/VideoReferenceClock.h"
+#include "cores/VideoRenderers/RenderManager.h"
 #if (D3DX_SDK_VERSION >= 42) //aug 2009 sdk and up use dxerr
   #include <Dxerr.h>
 #else
@@ -372,6 +373,8 @@ void CRenderSystemDX::OnDeviceReset()
     for (vector<ID3DResource *>::iterator i = m_resources.begin(); i != m_resources.end(); i++)
       (*i)->OnResetDevice();
 
+    g_renderManager.Flush();
+
     g_windowManager.SendMessage(GUI_MSG_NOTIFY_ALL, 0, 0, GUI_MSG_RENDERER_RESET);
   }
   else