author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 16 Apr 2010 15:29:42 +0300 | |
changeset 12 | 5a06f39ad45b |
child 16 | 43d09473c595 |
permissions | -rw-r--r-- |
12
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/* |
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <assert.h> |
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|
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#include "xametadatatraversalitf.h" |
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#ifdef _GSTREAMER_BACKEND_ |
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#include "XAMetadataAdaptation.h" |
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#endif |
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/* XAMetadataTraversalImpl* GetImpl(XAMetadataTraversalItf self) |
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* Description: Validate interface pointer and cast it to implementation pointer. |
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*/ |
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static XAMetadataTraversalImpl* GetImpl(XAMetadataTraversalItf self) |
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{ |
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if( self ) |
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{ |
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XAMetadataTraversalImpl* impl = (XAMetadataTraversalImpl*)(*self); |
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if( impl && (impl == impl->self) ) |
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{ |
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return impl; |
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} |
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} |
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return NULL; |
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} |
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|
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/***************************************************************************** |
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* Base interface XAMetadataTraversalItf implementation |
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*****************************************************************************/ |
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|
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/* XAresult XAMetadataTraversalItfImpl_SetMode |
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* Description: Sets the metadata traversal mode |
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*/ |
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XAresult XAMetadataTraversalItfImpl_SetMode(XAMetadataTraversalItf self, |
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XAuint32 mode) |
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{ |
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XAMetadataTraversalImpl *impl = NULL; |
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XAresult res = XA_RESULT_SUCCESS; |
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|
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DEBUG_API("->XAMetadataTraversalItfImpl_SetMode"); |
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impl = GetImpl(self); |
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/* check parameters */ |
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if( !impl || |
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(mode!=XA_METADATATRAVERSALMODE_NODE && |
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mode!=XA_METADATATRAVERSALMODE_ALL)) |
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{ |
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DEBUG_ERR("XA_RESULT_PARAMETER_INVALID"); |
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res = XA_RESULT_PARAMETER_INVALID; |
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} |
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else if(impl->traversemode != mode) |
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{ |
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#ifdef _GSTREAMER_BACKEND_ |
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res =XAMetadataTraversalItfAdapt_SetMode(impl->adaptCtx, mode); |
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#endif |
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if( res == XA_RESULT_SUCCESS ) |
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{ |
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impl->traversemode = mode; |
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} |
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} |
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else |
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{ |
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/* do nothing */ |
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} |
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|
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DEBUG_API("<-XAMetadataTraversalItfImpl_SetMode"); |
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return res; |
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} |
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|
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/* XAresult XAMetadataTraversalItfImpl_GetChildCount |
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* Description: Returns the number of children (nodes, streams, etc.) within the current scope |
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*/ |
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XAresult XAMetadataTraversalItfImpl_GetChildCount(XAMetadataTraversalItf self, |
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XAuint32 *pCount) |
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{ |
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XAMetadataTraversalImpl *impl = NULL; |
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XAresult res = XA_RESULT_SUCCESS; |
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|
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DEBUG_API("->XAMetadataTraversalItfImpl_GetChildCount"); |
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impl = GetImpl(self); |
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if( !impl || !pCount ) |
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{ |
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DEBUG_ERR("XA_RESULT_PARAMETER_INVALID"); |
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res = XA_RESULT_PARAMETER_INVALID; |
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} |
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else |
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{ |
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if(impl->traversemode==XA_METADATATRAVERSALMODE_ALL) |
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{ |
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104 |
/* for this mode, child count is always 0 */ |
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*pCount = 0; |
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res = XA_RESULT_SUCCESS; |
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107 |
} |
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108 |
else |
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109 |
{ |
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#ifdef _GSTREAMER_BACKEND_ |
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res = XAMetadataTraversalItfAdapt_GetChildCount(impl->adaptCtx, pCount); |
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#endif |
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} |
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114 |
} |
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115 |
|
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DEBUG_API("<-XAMetadataTraversalItfImpl_GetChildCount"); |
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return res; |
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118 |
} |
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119 |
|
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120 |
/* XAresult XAMetadataTraversalItfImpl_GetChildMIMETypeSize |
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* Description: Returns the size in bytes needed to store the MIME type of a child |
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*/ |
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123 |
XAresult XAMetadataTraversalItfImpl_GetChildMIMETypeSize(XAMetadataTraversalItf self, |
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124 |
XAuint32 index, |
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XAuint32 *pSize) |
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126 |
{ |
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XAMetadataTraversalImpl *impl = NULL; |
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#ifdef _GSTREAMER_BACKEND_ |
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XAuint32 chCount = 0; |
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#endif |
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XAresult res = XA_RESULT_SUCCESS; |
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132 |
|
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DEBUG_API("->XAMetadataTraversalItfImpl_GetChildMIMETypeSize"); |
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impl = GetImpl(self); |
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135 |
|
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136 |
if( !impl || !pSize) |
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137 |
{ |
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DEBUG_ERR("XA_RESULT_PARAMETER_INVALID"); |
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res = XA_RESULT_PARAMETER_INVALID; |
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140 |
} |
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141 |
else |
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142 |
{ |
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143 |
#ifdef _GSTREAMER_BACKEND_ |
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res = XAMetadataTraversalItfAdapt_GetChildCount(impl->adaptCtx, &chCount); |
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if(index >= chCount || res != XA_RESULT_SUCCESS) |
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146 |
{ |
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/* out of bounds */ |
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res = XA_RESULT_PARAMETER_INVALID; |
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149 |
} |
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res = XAMetadataTraversalItfAdapt_GetChildMIMETypeSize(impl->adaptCtx, index, pSize); |
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151 |
#endif |
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152 |
} |
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153 |
|
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DEBUG_API("<-XAMetadataTraversalItfImpl_GetChildMIMETypeSize"); |
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return res; |
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156 |
} |
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157 |
|
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158 |
/* XAresult XAMetadataTraversalItfImpl_GetChildInfo |
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* Description: Returns information about a child |
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*/ |
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161 |
XAresult XAMetadataTraversalItfImpl_GetChildInfo(XAMetadataTraversalItf self, |
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162 |
XAuint32 index, |
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163 |
XAint32 *pNodeID, |
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164 |
XAuint32 *pType, |
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165 |
XAuint32 size, |
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166 |
XAchar *pMimeType) |
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167 |
{ |
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XAMetadataTraversalImpl *impl = NULL; |
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169 |
#ifdef _GSTREAMER_BACKEND_ |
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XAuint32 chCount = 0; |
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#endif |
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XAresult res = XA_RESULT_SUCCESS; |
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173 |
|
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DEBUG_API("->XAMetadataTraversalItfImpl_GetChildInfo"); |
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impl = GetImpl(self); |
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if( !impl || !pNodeID || !pType ) |
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177 |
{ |
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DEBUG_ERR("XA_RESULT_PARAMETER_INVALID"); |
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res = XA_RESULT_PARAMETER_INVALID; |
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} |
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181 |
else |
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182 |
{ |
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183 |
#ifdef _GSTREAMER_BACKEND_ |
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res = XAMetadataTraversalItfAdapt_GetChildCount(impl->adaptCtx, &chCount); |
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if(index >= chCount || res != XA_RESULT_SUCCESS) |
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186 |
{ |
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187 |
/* out of bounds */ |
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DEBUG_ERR("XA_RESULT_PARAMETER_INVALID"); |
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189 |
DEBUG_API("<-XAMetadataTraversalItfImpl_GetChildInfo"); |
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return XA_RESULT_PARAMETER_INVALID; |
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191 |
} |
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res = XAMetadataTraversalItfAdapt_GetChildInfo(impl->adaptCtx, index, |
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pNodeID, pType, size, pMimeType); |
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194 |
#endif |
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195 |
} |
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196 |
|
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197 |
DEBUG_API("<-XAMetadataTraversalItfImpl_GetChildInfo"); |
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198 |
return res; |
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199 |
} |
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200 |
|
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201 |
/* XAresult XAMetadataTraversalItfImpl_SetActiveNode |
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* Description: Sets the scope to a child node |
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203 |
*/ |
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204 |
XAresult XAMetadataTraversalItfImpl_SetActiveNode(XAMetadataTraversalItf self, |
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205 |
XAuint32 index) |
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206 |
{ |
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XAMetadataTraversalImpl *impl = NULL; |
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#ifdef _GSTREAMER_BACKEND_ |
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XAuint32 chCount = 0; |
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#endif |
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XAresult res = XA_RESULT_SUCCESS; |
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|
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DEBUG_API("->XAMetadataTraversalItfImpl_SetActiveNode"); |
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impl = GetImpl(self); |
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if( !impl ) |
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{ |
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DEBUG_ERR("XA_RESULT_PARAMETER_INVALID"); |
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res = XA_RESULT_PARAMETER_INVALID; |
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} |
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else |
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{ |
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#ifdef _GSTREAMER_BACKEND_ |
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res = XAMetadataTraversalItfAdapt_GetChildCount(impl->adaptCtx, &chCount); |
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if( res == XA_RESULT_SUCCESS ) |
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{ |
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if((impl->nodedepth==0 && index==XA_NODE_PARENT) || |
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(index >= chCount && index!=XA_NODE_PARENT)) |
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{ |
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/* try to ascend from root or descend to nonexistend child node */ |
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res = XA_RESULT_PARAMETER_INVALID; |
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} |
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else |
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{ |
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/* update node and childs */ |
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res = XAMetadataTraversalItfAdapt_SetActiveNode(impl->adaptCtx, index); |
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if( res == XA_RESULT_SUCCESS ) |
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{ |
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if(index==XA_NODE_PARENT) |
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{ |
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impl->nodedepth++; |
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} |
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else |
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{ |
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impl->nodedepth--; |
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} |
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} |
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} |
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} |
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else |
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{ |
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DEBUG_ERR("XA_RESULT_INTERNAL_ERROR"); |
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DEBUG_API("<-XAMetadataTraversalItfImpl_SetActiveNode"); |
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return XA_RESULT_INTERNAL_ERROR; |
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} |
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#endif |
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} |
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|
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DEBUG_API("<-XAMetadataTraversalItfImpl_SetActiveNode"); |
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return res; |
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} |
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|
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/***************************************************************************** |
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* XAMetadataTraversalImpl -specific methods |
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*****************************************************************************/ |
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#ifdef _GSTREAMER_BACKEND_ |
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|
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/* XAMetadataTraversalImpl* XAMetadataTraversalItfImpl_Create() |
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* Description: Allocate and initialize XAMetadataTraversalImpl |
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*/ |
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XAMetadataTraversalImpl* XAMetadataTraversalItfImpl_Create( XAAdaptationBaseCtx *adaptCtx ) |
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{ |
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XAMetadataTraversalImpl *self = NULL; |
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DEBUG_API("->XAMetadataTraversalItfImpl_Create"); |
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|
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self = (XAMetadataTraversalImpl*) calloc(1,sizeof(XAMetadataTraversalImpl)); |
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|
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if( self ) |
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{ |
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/* init itf default implementation */ |
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self->itf.SetMode = XAMetadataTraversalItfImpl_SetMode; |
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self->itf.GetChildCount = XAMetadataTraversalItfImpl_GetChildCount; |
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self->itf.GetChildMIMETypeSize = XAMetadataTraversalItfImpl_GetChildMIMETypeSize; |
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self->itf.GetChildInfo = XAMetadataTraversalItfImpl_GetChildInfo; |
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self->itf.SetActiveNode = XAMetadataTraversalItfImpl_SetActiveNode; |
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|
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/* init variables */ |
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self->adaptCtx = adaptCtx; |
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|
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self->self = self; |
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} |
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DEBUG_API("<-XAMetadataTraversalItfImpl_Create"); |
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return self; |
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} |
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#endif |
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/* void XAMetadataTraversalItfImpl_Free(XAMetadataTraversalImpl* self) |
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* Description: Free all resources reserved at XAMetadataTraversalItfImpl_Create |
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*/ |
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void XAMetadataTraversalItfImpl_Free(XAMetadataTraversalImpl* self) |
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{ |
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DEBUG_API("->XAMetadataTraversalItfImpl_Free"); |
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assert(self==self->self); |
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free(self); |
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DEBUG_API("<-XAMetadataTraversalItfImpl_Free"); |
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} |