--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/khronosfws/openmax_al/src/common/xametadatatraversalitf.c Fri Apr 16 15:29:42 2010 +0300
@@ -0,0 +1,304 @@
+/*
+* 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");
+}