1 /*

     2 * Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   Class HuiVg10VGImageBinder

    15 *

    16 */

    17 

    18 #include "HuiVg10VgImageBinder.h"

    19 #include "HuiVg10RenderPlugin.h"

    20 #include "uiacceltk/HuiUtil.h"

    21 

    22 CHuiVg10VgImageBinder::CHuiVg10VgImageBinder(CHuiVg10RenderPlugin* aRenderPlugin):

    23     iRenderPlugin(aRenderPlugin)

    24     {

    25     }

    26 

    27 void CHuiVg10VgImageBinder::ConstructL()

    28     {

    29     }

    30 

    31 CHuiVg10VgImageBinder::~CHuiVg10VgImageBinder()

    32     {

    33     if (iEglPBufferSurface_Client)

    34         {

    35         eglDestroySurface( iRenderPlugin->EglDisplay(), iEglPBufferSurface_Client );

    36         iEglPBufferSurface_Client = EGL_NO_SURFACE;

    37         }

    38     // Not owned, don't delete.

    39     iRenderPlugin = NULL;

    40     }

    41 

    42 CHuiVg10VgImageBinder* CHuiVg10VgImageBinder::NewL(CHuiVg10RenderPlugin* aRenderPlugin)

    43     {   

    44     CHuiVg10VgImageBinder* self = new (ELeave) CHuiVg10VgImageBinder(aRenderPlugin);

    45     self->ConstructL();

    46     return self;

    47     }

    48 

    49 TInt CHuiVg10VgImageBinder::BindClientBuffer(TUint aBuffer)

    50     {

    51     // Check whether we should use the Alpha format bit

    52     VGImageFormat imageFormat = (VGImageFormat)vgGetParameteri(aBuffer, VG_IMAGE_FORMAT);

    53     TInt maskBit = 0;

    54     if (imageFormat == VG_sRGBA_8888_PRE)

    55         {

    56         maskBit = EGL_VG_ALPHA_FORMAT_PRE_BIT;

    57         }

    58     

    59     const TInt BITS_PER_CHANNEL = 8;

    60     // Choose an EGL config

    61     const EGLint attrs[] =

    62         {

    63         EGL_RENDERABLE_TYPE,    EGL_OPENVG_BIT,

    64         EGL_SURFACE_TYPE,       EGL_PBUFFER_BIT | maskBit,

    65         EGL_RED_SIZE,           BITS_PER_CHANNEL,

    66         EGL_GREEN_SIZE,         BITS_PER_CHANNEL,

    67         EGL_BLUE_SIZE,          BITS_PER_CHANNEL,

    68         EGL_ALPHA_SIZE,         BITS_PER_CHANNEL,

    69         EGL_NONE

    70         };

    71     

    72     // Create a context

    73     TInt configCount = iRenderPlugin->EglChooseConfig(attrs);

    74     EGLConfig config = iRenderPlugin->EglConfig(0);

    75     

    76     // Create a pbuffer surface

    77     iEglPBufferSurface_Client = eglCreatePbufferFromClientBuffer(iRenderPlugin->EglDisplay(),

    78             EGL_OPENVG_IMAGE, 

    79             static_cast<EGLClientBuffer>(aBuffer),    // Use the param image as buffer

    80             config, NULL);

    81     

    82     if (iEglPBufferSurface_Client == EGL_NO_SURFACE)

    83         {

    84         HUI_DEBUG1(_L("CHuiVg10VgImageBinder::BindClientBuffer() - EGL Surface could not be created, eglErr: %04x"), eglGetError() );

    85         return KErrGeneral;

    86         }

    87 

    88     // Save current context and surfaces

    89     iSavedContext = eglGetCurrentContext();

    90     iSavedDrawSurface = eglGetCurrentSurface(EGL_DRAW);

    91     iSavedReadSurface = eglGetCurrentSurface(EGL_READ);

    92 

    93     EGLContext context = iRenderPlugin->EglSharedContext();

    94     

    95     // Bind our own PBuffer surface (from VGImage)

    96     if ( eglMakeCurrent(iRenderPlugin->EglDisplay(), iEglPBufferSurface_Client, iEglPBufferSurface_Client, context /*iSavedContext*/) == EGL_FALSE )

    97         {

    98         HUI_DEBUG1(_L("CHuiVg10VgImageBinder::BindClientBuffer() - EGL Surface could not be made current, eglErr: %04x"), eglGetError());

    99         return KErrGeneral;

   100         }

   101     

   102     // Alles in Ordnung!

   103     return KErrNone;

   104     }

   105 

   106 TInt CHuiVg10VgImageBinder::UnBindClientBuffer()

   107     {

   108     if ( eglMakeCurrent(iRenderPlugin->EglDisplay(), iSavedDrawSurface, iSavedReadSurface, iSavedContext) == EGL_FALSE )

   109         {

   110         HUI_DEBUG1(_L("CHuiVg10VgImageBinder::BindClientBuffer() - EGL Surface could not be made current, eglErr: %04x"), eglGetError());

   111         return KErrGeneral;

   112         }

   113     

   114     iSavedDrawSurface = 0;

   115     iSavedReadSurface = 0;

   116     iSavedContext = 0;

   117 

   118     if (iEglPBufferSurface_Client)

   119         {

   120         eglDestroySurface( iRenderPlugin->EglDisplay(), iEglPBufferSurface_Client );

   121         iEglPBufferSurface_Client = EGL_NO_SURFACE;

   122         }

   123     

   124     // Everything went fine

   125     return KErrNone;

   126     }

   127 

   128 // End of file

   129