/*
* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "xametadatatraversalitf.h"
#ifdef _GSTREAMER_BACKEND_
#include "XAMetadataAdaptation.h"
#endif
/* XAMetadataTraversalImpl* GetImpl(XAMetadataTraversalItf self)
* Description: Validate interface pointer and cast it to implementation pointer.
*/
static XAMetadataTraversalImpl* GetImpl(XAMetadataTraversalItf self)
{
if( self )
{
XAMetadataTraversalImpl* impl = (XAMetadataTraversalImpl*)(*self);
if( impl && (impl == impl->self) )
{
return impl;
}
}
return NULL;
}
/*****************************************************************************
* Base interface XAMetadataTraversalItf implementation
*****************************************************************************/
/* XAresult XAMetadataTraversalItfImpl_SetMode
* Description: Sets the metadata traversal mode
*/
XAresult XAMetadataTraversalItfImpl_SetMode(XAMetadataTraversalItf self,
XAuint32 mode)
{
XAMetadataTraversalImpl *impl = NULL;
XAresult res = XA_RESULT_SUCCESS;
DEBUG_API("->XAMetadataTraversalItfImpl_SetMode");
impl = GetImpl(self);
/* check parameters */
if( !impl ||
(mode!=XA_METADATATRAVERSALMODE_NODE &&
mode!=XA_METADATATRAVERSALMODE_ALL))
{
DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");
res = XA_RESULT_PARAMETER_INVALID;
}
else if(impl->traversemode != mode)
{
#ifdef _GSTREAMER_BACKEND_
res =XAMetadataTraversalItfAdapt_SetMode(impl->adaptCtx, mode);
#endif
if( res == XA_RESULT_SUCCESS )
{
impl->traversemode = mode;
}
}
else
{
/* do nothing */
}
DEBUG_API("<-XAMetadataTraversalItfImpl_SetMode");
return res;
}
/* XAresult XAMetadataTraversalItfImpl_GetChildCount
* Description: Returns the number of children (nodes, streams, etc.) within the current scope
*/
XAresult XAMetadataTraversalItfImpl_GetChildCount(XAMetadataTraversalItf self,
XAuint32 *pCount)
{
XAMetadataTraversalImpl *impl = NULL;
XAresult res = XA_RESULT_SUCCESS;
DEBUG_API("->XAMetadataTraversalItfImpl_GetChildCount");
impl = GetImpl(self);
if( !impl || !pCount )
{
DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");
res = XA_RESULT_PARAMETER_INVALID;
}
else
{
if(impl->traversemode==XA_METADATATRAVERSALMODE_ALL)
{
/* for this mode, child count is always 0 */
*pCount = 0;
res = XA_RESULT_SUCCESS;
}
else
{
#ifdef _GSTREAMER_BACKEND_
res = XAMetadataTraversalItfAdapt_GetChildCount(impl->adaptCtx, pCount);
#endif
}
}
DEBUG_API("<-XAMetadataTraversalItfImpl_GetChildCount");
return res;
}
/* XAresult XAMetadataTraversalItfImpl_GetChildMIMETypeSize
* Description: Returns the size in bytes needed to store the MIME type of a child
*/
XAresult XAMetadataTraversalItfImpl_GetChildMIMETypeSize(XAMetadataTraversalItf self,
XAuint32 index,
XAuint32 *pSize)
{
XAMetadataTraversalImpl *impl = NULL;
#ifdef _GSTREAMER_BACKEND_
XAuint32 chCount = 0;
#endif
XAresult res = XA_RESULT_SUCCESS;
DEBUG_API("->XAMetadataTraversalItfImpl_GetChildMIMETypeSize");
impl = GetImpl(self);
if( !impl || !pSize)
{
DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");
res = XA_RESULT_PARAMETER_INVALID;
}
else
{
#ifdef _GSTREAMER_BACKEND_
res = XAMetadataTraversalItfAdapt_GetChildCount(impl->adaptCtx, &chCount);
if(index >= chCount || res != XA_RESULT_SUCCESS)
{
/* out of bounds */
res = XA_RESULT_PARAMETER_INVALID;
}
res = XAMetadataTraversalItfAdapt_GetChildMIMETypeSize(impl->adaptCtx, index, pSize);
#endif
}
DEBUG_API("<-XAMetadataTraversalItfImpl_GetChildMIMETypeSize");
return res;
}
/* XAresult XAMetadataTraversalItfImpl_GetChildInfo
* Description: Returns information about a child
*/
XAresult XAMetadataTraversalItfImpl_GetChildInfo(XAMetadataTraversalItf self,
XAuint32 index,
XAint32 *pNodeID,
XAuint32 *pType,
XAuint32 size,
XAchar *pMimeType)
{
XAMetadataTraversalImpl *impl = NULL;
#ifdef _GSTREAMER_BACKEND_
XAuint32 chCount = 0;
#endif
XAresult res = XA_RESULT_SUCCESS;
DEBUG_API("->XAMetadataTraversalItfImpl_GetChildInfo");
impl = GetImpl(self);
if( !impl || !pNodeID || !pType )
{
DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");
res = XA_RESULT_PARAMETER_INVALID;
}
else
{
#ifdef _GSTREAMER_BACKEND_
res = XAMetadataTraversalItfAdapt_GetChildCount(impl->adaptCtx, &chCount);
if(index >= chCount || res != XA_RESULT_SUCCESS)
{
/* out of bounds */
DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");
DEBUG_API("<-XAMetadataTraversalItfImpl_GetChildInfo");
return XA_RESULT_PARAMETER_INVALID;
}
res = XAMetadataTraversalItfAdapt_GetChildInfo(impl->adaptCtx, index,
pNodeID, pType, size, pMimeType);
#endif
}
DEBUG_API("<-XAMetadataTraversalItfImpl_GetChildInfo");
return res;
}
/* XAresult XAMetadataTraversalItfImpl_SetActiveNode
* Description: Sets the scope to a child node
*/
XAresult XAMetadataTraversalItfImpl_SetActiveNode(XAMetadataTraversalItf self,
XAuint32 index)
{
XAMetadataTraversalImpl *impl = NULL;
#ifdef _GSTREAMER_BACKEND_
XAuint32 chCount = 0;
#endif
XAresult res = XA_RESULT_SUCCESS;
DEBUG_API("->XAMetadataTraversalItfImpl_SetActiveNode");
impl = GetImpl(self);
if( !impl )
{
DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");
res = XA_RESULT_PARAMETER_INVALID;
}
else
{
#ifdef _GSTREAMER_BACKEND_
res = XAMetadataTraversalItfAdapt_GetChildCount(impl->adaptCtx, &chCount);
if( res == XA_RESULT_SUCCESS )
{
if((impl->nodedepth==0 && index==XA_NODE_PARENT) ||
(index >= chCount && index!=XA_NODE_PARENT))
{
/* try to ascend from root or descend to nonexistend child node */
res = XA_RESULT_PARAMETER_INVALID;
}
else
{
/* update node and childs */
res = XAMetadataTraversalItfAdapt_SetActiveNode(impl->adaptCtx, index);
if( res == XA_RESULT_SUCCESS )
{
if(index==XA_NODE_PARENT)
{
impl->nodedepth++;
}
else
{
impl->nodedepth--;
}
}
}
}
else
{
DEBUG_ERR("XA_RESULT_INTERNAL_ERROR");
DEBUG_API("<-XAMetadataTraversalItfImpl_SetActiveNode");
return XA_RESULT_INTERNAL_ERROR;
}
#endif
}
DEBUG_API("<-XAMetadataTraversalItfImpl_SetActiveNode");
return res;
}
/*****************************************************************************
* XAMetadataTraversalImpl -specific methods
*****************************************************************************/
#ifdef _GSTREAMER_BACKEND_
/* XAMetadataTraversalImpl* XAMetadataTraversalItfImpl_Create()
* Description: Allocate and initialize XAMetadataTraversalImpl
*/
XAMetadataTraversalImpl* XAMetadataTraversalItfImpl_Create( XAAdaptationBaseCtx *adaptCtx )
{
XAMetadataTraversalImpl *self = NULL;
DEBUG_API("->XAMetadataTraversalItfImpl_Create");
self = (XAMetadataTraversalImpl*) calloc(1,sizeof(XAMetadataTraversalImpl));
if( self )
{
/* init itf default implementation */
self->itf.SetMode = XAMetadataTraversalItfImpl_SetMode;
self->itf.GetChildCount = XAMetadataTraversalItfImpl_GetChildCount;
self->itf.GetChildMIMETypeSize = XAMetadataTraversalItfImpl_GetChildMIMETypeSize;
self->itf.GetChildInfo = XAMetadataTraversalItfImpl_GetChildInfo;
self->itf.SetActiveNode = XAMetadataTraversalItfImpl_SetActiveNode;
/* init variables */
self->adaptCtx = adaptCtx;
self->self = self;
}
DEBUG_API("<-XAMetadataTraversalItfImpl_Create");
return self;
}
#endif
/* void XAMetadataTraversalItfImpl_Free(XAMetadataTraversalImpl* self)
* Description: Free all resources reserved at XAMetadataTraversalItfImpl_Create
*/
void XAMetadataTraversalItfImpl_Free(XAMetadataTraversalImpl* self)
{
DEBUG_API("->XAMetadataTraversalItfImpl_Free");
assert(self==self->self);
free(self);
DEBUG_API("<-XAMetadataTraversalItfImpl_Free");
}