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/*
(c) Copyright 2001-2009 The world wide DirectFB Open Source Community (directfb.org)
(c) Copyright 2000-2004 Convergence (integrated media) GmbH
All rights reserved.
Written by Denis Oliver Kropp <dok@directfb.org>,
Andreas Hundt <andi@fischlustig.de>,
Sven Neumann <neo@directfb.org>,
Ville Syrjälä <syrjala@sci.fi> and
Claudio Ciccani <klan@users.sf.net>.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <stddef.h>
#include <string.h>
#include <directfb.h>
#include <core/core.h>
#include <direct/interface.h>
#include <direct/mem.h>
#include <media/idirectfbimageprovider.h>
#include <media/idirectfbdatabuffer.h>
static DirectResult
IDirectFBImageProvider_AddRef( IDirectFBImageProvider *thiz )
{
return DFB_UNIMPLEMENTED;
}
static DirectResult
IDirectFBImageProvider_Release( IDirectFBImageProvider *thiz )
{
return DFB_UNIMPLEMENTED;
}
static DFBResult
IDirectFBImageProvider_GetSurfaceDescription( IDirectFBImageProvider *thiz,
DFBSurfaceDescription *ret_dsc )
{
if (!ret_dsc)
return DFB_INVARG;
ret_dsc->flags = DSDESC_NONE;
return DFB_UNIMPLEMENTED;
}
static DFBResult
IDirectFBImageProvider_GetImageDescription( IDirectFBImageProvider *thiz,
DFBImageDescription *ret_dsc )
{
if (!ret_dsc)
return DFB_INVARG;
ret_dsc->caps = DICAPS_NONE;
return DFB_UNIMPLEMENTED;
}
static DFBResult
IDirectFBImageProvider_RenderTo( IDirectFBImageProvider *thiz,
IDirectFBSurface *destination,
const DFBRectangle *destination_rect )
{
return DFB_UNIMPLEMENTED;
}
static DFBResult
IDirectFBImageProvider_SetRenderCallback( IDirectFBImageProvider *thiz,
DIRenderCallback callback,
void *callback_data )
{
return DFB_UNIMPLEMENTED;
}
static DFBResult
IDirectFBImageProvider_WriteBack( IDirectFBImageProvider *thiz,
IDirectFBSurface *surface,
const DFBRectangle *src_rect,
const char *filename )
{
return DFB_UNIMPLEMENTED;
}
static void
IDirectFBImageProvider_Construct( IDirectFBImageProvider *thiz )
{
thiz->AddRef = IDirectFBImageProvider_AddRef;
thiz->Release = IDirectFBImageProvider_Release;
thiz->GetSurfaceDescription = IDirectFBImageProvider_GetSurfaceDescription;
thiz->GetImageDescription = IDirectFBImageProvider_GetImageDescription;
thiz->RenderTo = IDirectFBImageProvider_RenderTo;
thiz->SetRenderCallback = IDirectFBImageProvider_SetRenderCallback;
thiz->WriteBack = IDirectFBImageProvider_WriteBack;
}
DFBResult
IDirectFBImageProvider_CreateFromBuffer( IDirectFBDataBuffer *buffer,
CoreDFB *core,
IDirectFBImageProvider **interface )
{
DFBResult ret;
DirectInterfaceFuncs *funcs = NULL;
IDirectFBDataBuffer_data *buffer_data;
IDirectFBImageProvider *imageprovider;
IDirectFBImageProvider_ProbeContext ctx;
/* Get the private information of the data buffer. */
buffer_data = (IDirectFBDataBuffer_data*) buffer->priv;
if (!buffer_data)
return DFB_DEAD;
/* Clear for safety, especially header data. */
memset( &ctx, 0, sizeof(ctx) );
/* Provide a fallback for image providers without data buffer support. */
ctx.filename = buffer_data->filename;
/* Wait until 32 bytes are available. */
ret = buffer->WaitForData( buffer, 32 );
if (ret)
return ret;
/* Read the first 32 bytes. */
buffer->PeekData( buffer, 32, 0, ctx.header, NULL );
/* Find a suitable implementation. */
ret = DirectGetInterface( &funcs, "IDirectFBImageProvider", NULL, DirectProbeInterface, &ctx );
if (ret)
return ret;
DIRECT_ALLOCATE_INTERFACE( imageprovider, IDirectFBImageProvider );
/* Initialize interface pointers. */
IDirectFBImageProvider_Construct( imageprovider );
/* Construct the interface. */
ret = funcs->Construct( imageprovider, buffer, core );
if (ret)
return ret;
*interface = imageprovider;
return DFB_OK;
}
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