Make OGLFrameGrabber work

Steps of grabFrame
- Init opengl context
- Call libgltf to render
- Get a RGB buffer from libgltf
- Create a Bitmap from this RGB buffer

Additionally:
- Using mimetype is neccessary to decide which player to create.
- bAllowToCreateReplacementGraphic is unneeded.

Change-Id: I7fef043a3341771389144a4f4cac71b0862ef8a7

7 files changed, 45 insertions, 15 deletions

diff --git a/avmedia/source/opengl/oglframegrabber.cxx b/avmedia/source/opengl/oglframegrabber.cxx
index 2aeda9720b8e..81be9c138826 100644
--- a/avmedia/source/opengl/oglframegrabber.cxx
+++ b/avmedia/source/opengl/oglframegrabber.cxx
@@ -12,13 +12,16 @@
 #include <cppuhelper/supportsservice.hxx>
 #include <vcl/bitmapex.hxx>
 #include <vcl/graph.hxx>
+#include <vcl/salbtype.hxx>
+#include <vcl/bmpacc.hxx>
 
 using namespace com::sun::star;
 
 namespace avmedia { namespace ogl {
 
-OGLFrameGrabber::OGLFrameGrabber( const OUString& /*rUrl*/ )
+OGLFrameGrabber::OGLFrameGrabber(  glTFHandle* pHandle )
     : FrameGrabber_BASE()
+    , m_pHandle( pHandle )
 {
 }
 
@@ -26,12 +29,29 @@ OGLFrameGrabber::~OGLFrameGrabber()
 {
 }
 
-uno::Reference< css::graphic::XGraphic > SAL_CALL OGLFrameGrabber::grabFrame( double /*fMediaTime*/ )
+uno::Reference< css::graphic::XGraphic > SAL_CALL OGLFrameGrabber::grabFrame( double fMediaTime )
         throw ( uno::RuntimeException, std::exception )
 {
-    // TODO: Here we need a bitmap of the model at the point specified by fMediaTime
-    // See com::sun::star::media::XFrameGrabber
-    BitmapEx aBitmap;
+    // TODO: libgltf should provide an RGBA buffer, not just an RGB one. See: OpenGLRender::GetAsBitmap().
+    char* pBuffer = new char[m_pHandle->viewport.width * m_pHandle->viewport.height * 3];
+    gltf_renderer_get_bitmap(m_pHandle, fMediaTime, pBuffer, 800, 600);
+    Bitmap aBitmap( Size(m_pHandle->viewport.width, m_pHandle->viewport.height), 24 );
+    {
+        Bitmap::ScopedWriteAccess pWriteAccess( aBitmap );
+        size_t nCurPos = 0;
+        for( int y = 0; y < m_pHandle->viewport.height; ++y)
+        {
+            Scanline pScan = pWriteAccess->GetScanline(y);
+            for( int x = 0; x < m_pHandle->viewport.width; ++x )
+            {
+                *pScan++ = pBuffer[nCurPos];
+                *pScan++ = pBuffer[nCurPos+1];
+                *pScan++ = pBuffer[nCurPos+2];
+                nCurPos += 3;
+            }
+        }
+    }
+    delete [] pBuffer;
     return Graphic( aBitmap ).GetXGraphic();
 }
 
diff --git a/avmedia/source/opengl/oglframegrabber.hxx b/avmedia/source/opengl/oglframegrabber.hxx
index fd3d9fb76b81..b4b1daee7326 100644
--- a/avmedia/source/opengl/oglframegrabber.hxx
+++ b/avmedia/source/opengl/oglframegrabber.hxx
@@ -14,6 +14,8 @@
 #include <com/sun/star/lang/XServiceInfo.hpp>
 #include <com/sun/star/media/XFrameGrabber.hpp>
 
+#include <libgltf.h>
+
 namespace avmedia { namespace ogl {
 
 typedef ::cppu::WeakImplHelper2< com::sun::star::media::XFrameGrabber,
@@ -23,7 +25,7 @@ class OGLFrameGrabber : public FrameGrabber_BASE
 {
 public:
 
-    OGLFrameGrabber( const OUString& rURL );
+    OGLFrameGrabber( glTFHandle* pHandle );
     virtual ~OGLFrameGrabber();
 
     // XFrameGrabber
@@ -33,6 +35,9 @@ public:
     virtual OUString SAL_CALL getImplementationName() throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
     virtual sal_Bool SAL_CALL supportsService( const OUString& rServiceName ) throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
     virtual com::sun::star::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
+
+private:
+    glTFHandle* m_pHandle;
 };
 
 } // namespace ogl
diff --git a/avmedia/source/opengl/oglplayer.cxx b/avmedia/source/opengl/oglplayer.cxx
index d0ffde395229..f1d514a3cab4 100644
--- a/avmedia/source/opengl/oglplayer.cxx
+++ b/avmedia/source/opengl/oglplayer.cxx
@@ -196,7 +196,10 @@ uno::Reference< media::XFrameGrabber > SAL_CALL OGLPlayer::createFrameGrabber()
      throw ( uno::RuntimeException, std::exception )
 {
     osl::MutexGuard aGuard(m_aMutex);
-    OGLFrameGrabber *pFrameGrabber = new OGLFrameGrabber( m_sURL );
+    m_aContext.init();
+    m_pHandle->viewport = glTFViewport({0,0,800,600}); //TODO: Use real values instead of constants.
+    gltf_renderer_set_content(m_pHandle);
+    OGLFrameGrabber *pFrameGrabber = new OGLFrameGrabber( m_pHandle );
     return uno::Reference< media::XFrameGrabber >( pFrameGrabber );;
 }
 
diff --git a/avmedia/source/opengl/oglplayer.hxx b/avmedia/source/opengl/oglplayer.hxx
index cf8ac2cdb222..2b9b4154b2a6 100644
--- a/avmedia/source/opengl/oglplayer.hxx
+++ b/avmedia/source/opengl/oglplayer.hxx
@@ -15,6 +15,7 @@
 #include <com/sun/star/lang/XServiceInfo.hpp>
 #include <com/sun/star/media/XPlayer.hpp>
 #include <libgltf.h>
+#include <vcl/opengl/OpenGLContext.hxx>
 
 namespace avmedia { namespace ogl {
 
@@ -56,6 +57,7 @@ public:
 private:
     OUString m_sURL;
     glTFHandle* m_pHandle;
+    OpenGLContext m_aContext;
 };
 
 } // namespace ogl
diff --git a/avmedia/source/viewer/mediawindow.cxx b/avmedia/source/viewer/mediawindow.cxx
index 992bb40a3460..e586a587e2ef 100644
--- a/avmedia/source/viewer/mediawindow.cxx
+++ b/avmedia/source/viewer/mediawindow.cxx
@@ -385,19 +385,19 @@ bool MediaWindow::isMediaURL( const OUString& rURL, const OUString& rReferer, bo
 
 
 
-uno::Reference< media::XPlayer > MediaWindow::createPlayer( const OUString& rURL, const OUString& rReferer )
+uno::Reference< media::XPlayer > MediaWindow::createPlayer( const OUString& rURL, const OUString& rReferer, const OUString* pMimeType )
 {
-    return priv::MediaWindowImpl::createPlayer( rURL, rReferer );
+    return priv::MediaWindowImpl::createPlayer( rURL, rReferer, pMimeType );
 }
 
 
 
 uno::Reference< graphic::XGraphic > MediaWindow::grabFrame( const OUString& rURL,
                                                             const OUString& rReferer,
-                                                            bool bAllowToCreateReplacementGraphic,
+                                                            const OUString& sMimeType,
                                                             double fMediaTime )
 {
-    uno::Reference< media::XPlayer >    xPlayer( createPlayer( rURL, rReferer ) );
+    uno::Reference< media::XPlayer >    xPlayer( createPlayer( rURL, rReferer, &sMimeType ) );
     uno::Reference< graphic::XGraphic > xRet;
     boost::scoped_ptr< Graphic > apGraphic;
 
@@ -416,7 +416,7 @@ uno::Reference< graphic::XGraphic > MediaWindow::grabFrame( const OUString& rURL
             xRet = xGrabber->grabFrame( fMediaTime );
         }
 
-        if( !xRet.is() && bAllowToCreateReplacementGraphic  )
+        if( !xRet.is() )
         {
             awt::Size aPrefSize( xPlayer->getPreferredPlayerWindowSize() );
 
@@ -428,7 +428,7 @@ uno::Reference< graphic::XGraphic > MediaWindow::grabFrame( const OUString& rURL
         }
     }
 
-    if( !xRet.is() && !apGraphic.get() && bAllowToCreateReplacementGraphic )
+    if( !xRet.is() && !apGraphic.get() )
     {
         const BitmapEx aBmpEx( getEmptyLogo() );
         apGraphic.reset( new Graphic( aBmpEx ) );
diff --git a/avmedia/source/viewer/mediawindow_impl.cxx b/avmedia/source/viewer/mediawindow_impl.cxx
index f24c6e18c214..515580c65df3 100644
--- a/avmedia/source/viewer/mediawindow_impl.cxx
+++ b/avmedia/source/viewer/mediawindow_impl.cxx
@@ -205,7 +205,7 @@ MediaWindowImpl::~MediaWindowImpl()
     delete mpMediaWindowControl;
 }
 
-uno::Reference< media::XPlayer > MediaWindowImpl::createPlayer( const OUString& rURL, const OUString& rReferer, OUString* pMimeType )
+uno::Reference< media::XPlayer > MediaWindowImpl::createPlayer( const OUString& rURL, const OUString& rReferer, const OUString* pMimeType )
 {
 
     uno::Reference< media::XPlayer > xPlayer;
diff --git a/avmedia/source/viewer/mediawindow_impl.hxx b/avmedia/source/viewer/mediawindow_impl.hxx
index e0018639fc96..317cea8ef7d1 100644
--- a/avmedia/source/viewer/mediawindow_impl.hxx
+++ b/avmedia/source/viewer/mediawindow_impl.hxx
@@ -94,7 +94,7 @@ namespace avmedia
                             MediaWindowImpl( Window* parent, MediaWindow* pMediaWindow, bool bInternalMediaControl );
             virtual         ~MediaWindowImpl();
 
-            static ::com::sun::star::uno::Reference< ::com::sun::star::media::XPlayer > createPlayer( const OUString& rURL, const OUString& rReferer, OUString* pMimeType = 0 );
+            static ::com::sun::star::uno::Reference< ::com::sun::star::media::XPlayer > createPlayer( const OUString& rURL, const OUString& rReferer, const OUString* pMimeType = 0 );
 
             void    setURL( const OUString& rURL, OUString const& rTempURL, OUString const& rReferer );